• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Mobile unit for the evaluation and control of the impact of effluents from sewage treatment plants in marine ecosystems. By means of the invention it is possible to determine if the treatments to which the effluents of a certain wwtp are subjected are sufficient to obtain an effluent that does not suppose a potential risk for the marine receiving ecosystems. The invention allows carrying out in situ toxicity tests of variable duration, exposing different bioindicator species (from different taxonomic groups) to the effluent in real time with a continuous water renewal. It also offers the possibility of establishing different dilutions of the effluent with the idea of simulating the real concentrations of discharges and being able to determine quality guides and dilutions that would generate environmental risks in the receiving environment. The system is designed to control certain variables (temperature, salinity, dissolved oxygen and photoperiod) avoiding their influence on toxicological results. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2637236A1
    申请号:ES201600278
    申请日:2016-04-11
    公开日:2017-10-11
    发明作者:Maria Laura Martin Diaz；José Antonio PERALES VARGAS MACHUCA；Beatriz DIAZ GARDUÑO；Enrique GARCIA LUQUE；Jesús BARRAGAN SÁNCHEZ；Carmen GARRIDO PÉREZ；Manuel Alejandro MANZANO QUIÑONES
    申请人:Universidad de Cadiz；
    IPC主号:
    专利说明:

    5
    10
    fifteen
    twenty
    25
    30
    35
    40
    Four. Five
    fifty
    DESCRIPTION
    Mobile unit for the evaluation and control of the impact of effluents from wastewater treatment plants in marine ecosystems.
    Technology Sector
    According to the UNESCO International Nomenclature for the fields of Science and Technology, the scientific areas to which the invention corresponds will be:
    3308 Environmental Engineering and Technology
    330810 Wastewater Technology
    330811 Water Pollution Control
    According to the Statistical Nomenclature of Economic Activities of the European Community (NACE), the sector of industrial activity to which it can be applied is:
    Section E - Water supply, sanitation activities, waste management and decontamination
    37 Collection and treatment of wastewater State of the art
    Urban effluents are considered one of the most important sources of environmental pollutants in the aquatic environment (Michael, I., Rizzo, L., McArdell, CS, Manaia, CM, Merlin, C., Schwartz, T., Dagot, C ., Fatta-Kassinos, D. 2013. Urban wastewater treatment plants as hotspots for the release of antibiotics in the environment: a review. Water Res, 47: 957-995). Urban wastewater contains a complex mixture of chemical compounds and biological agents that can produce negative effects on aquatic organisms. In fact, it has been demonstrated by different authors that these effluents, which contain metals, polycyclic aromatic hydrocarbons, endocrine disruptors, pesticides, surfactants, steroids, etc. they are potentially toxic to aquatic organisms (causing genotoxicity, neurotoxicity, immunotoxicity and impaired reproduction) (Bouchard B., Gagne F., Fortier M., Fournier M., 2009. An in-situ study of the impacts of urban wastewater on the immune and reproductive systems of the freshwater mussel Elliptio complanata Comp Biochem Physiol and Toxicol Pharmacol, 150 (2): 132-40). To this list, we must add the recently referred to as emerging pollutants: pharmaceutical and personal care products (Pharmaceuticals and Personal Care Products - PPCP).
    Thus, effluents from urban wastewater treatment plants are considered the most important source of emerging pollutants to the marine environment because the treatment technology recommended in Directive 91/271 / EEC is insufficient to complete the elimination of many of these specific compounds (La Farre, M., Ferrer, B., Ginebreda, A. Figueras, M., Olivella, L., Tirapu, L., Vilanova, M., Barcelo, D. 2001. Determination of drugs in surface water and wastewater samples by liquid chromatography-mass spectrometry: methods and preliminary results including toxicity studies with Vibrio fischeri. J Chromat A, 938: 187-197).
    5
    10
    fifteen
    twenty
    25
    30
    35
    40
    Four. Five
    fifty
    Most urban and industrial wastewater is processed in treatment plants (OECD. 2004. OECD Key Environmental indicators. OECD Environment Directorate, Paris, France, 38 pp.) Before the effluent is discharged into the environment, it is subjected to a treatment consisting of a succession of physical, chemical and biological processes whose purpose is to eliminate mainly solids in suspension and organic matter and, in some cases, nutrients such as nitrogen and phosphorus. The objective of the treatment is to produce purified water (treated effluent) or reusable and a solid or mud residue (also called biosolide or mud) properly stabilized for later disposal or reuse.
    The treatment of urban wastewater is regulated by the European Union through Directive 91/271 / EEC, which establishes the necessary measures that Member States must take to ensure that urban wastewater receives adequate treatment before from its discharge to continental or marine waters. Specifically, in Spain, the transposition of Directive 91/271 / EEC into Spanish Law, is contained in Royal Decree-Law 11/1995, of December 28 (BOE num. 312, of December 30), whereby the rules applicable to the treatment of urban wastewater are established. For its part, Royal Decree 509/1996, of March 15 (BOE No. 77, of March 29) developed the content of the aforementioned, by incorporating the Annexes contained in Directive 91/271 / EEC, which They don't speak been initially incorporated. The requirements proposed by this legislation are based on the determination of certain parameters and the fulfillment of certain gluttony values as regards BOD5 (at 20 ° e without nitrification), COD and total solids content in suspension.
    However, despite following the legally established guidelines, effluents are characterized as being an important potential source of contaminants when they are discharged into the natural environment, since the available treatment technology seems insufficient to complete the elimination of certain specific compounds. The legislation does not take into account the different pollutants that, as described by different authors, can have adverse effects on the receiving ecosystems of these effluents. This has led numerous international research groups to direct their efforts towards the evaluation of these spills and their possible adverse effects on the ecosystem. Thus, the studies carried out in which different organisms are exposed to different dilutions of wastewater effluent stand out. Among them, it is worth highlighting the work done with fish in Switzerland (Bucher F., Hofer R., 1993. The effects of treated domestic sewage on three organs (gills, kidney, liver) of brown trout (Salmo trutta). 27: 255-261; Burkhardt-Holm P., Escher M., Meier W., 1997. Waste water management plant effluents cause cellular alterations in the skin of brown trout. J Fish Biol, 50: 744-758), Sweden ( Paxeus, N. 1996. Vehicle washing as a source of organic pollutants in municipal wastewater, Water Sci Technol, 33: 1-8), Germany (Hoeger B., van den Heuvel MR, Hitzfeld BC, Dietrich DR, 2004. Effects of treated sewage effluent on immune fraction in rainbow trout (Oncorhynchus mykiss), Aquat Toxicol, 70: 345-355), Japon (Higashitani T., Tamamoto H., Takahashi A., Tanaka H., 2003. Study of strogenic effects on carp (Cyprinus carpio) exposed to sewage treatment plant, Water Sci Technol, 47: 93-100), United States (Grizzle JM, Horrowitz SA, Strength DR, 1988. Caged fish as moni tors of pollution: effects of chlorinated effluent from a wastwater treatment plant. Water Resour Bull, 24: 951-959) and, especially, in Canada with bivalve molluscs (Akaishi FM, St-Jean SD, Bishay F., Clarke J., Rabitto ldS, Ribeiro CAdO, 2007. Immunological responses, histopathological finding and disease resistance of blue mussel (Mytilus edulis) exposed to treated and untreated municipal wastewater, Aquat Toxicol, 82: 1-14; Bouchard B., Gagne F., Fortier M., Fournier M., 2009. An in-situ study of the Impacts of urban wastewater on the immune and reproductive systems of the freshwater mussel Elliptio complanata, Comp Biochem
    5
    10
    fifteen
    twenty
    25
    30
    35
    40
    Four. Five
    fifty
    Physiol and Toxicol Pharmacol, 150 (2): 132-40; Gagne F., Andre C., Cejka P., Gagnon C., Blaise C., 2007. Toxicological effects of primary-treated urban wastewaters, before and after ozone treatment, on freshwater mussels (Elliptio Complanata). Biochem Physiol, 145C: 542-552; Gagne, F., Andre, C., Cejka, P., Hausler, R., Fournier, M. 2011. Evidence of neuroendocrine disruption in freshwater mussels exposed to municipal wastewaters. Sci Total Enviran, 409 (19): 3711-3718) and fish (Gagne F., Blaise C., Andre C., 2006. Occurrence of pharmaceutical products in a municipal effluent and toxicity to rainbow trout (Oncorhynchus mykiss) hepatocytes. Ecotoxicol Environ Saf, 64: 329-36; Herbert N., Gagne F., Cejka P., Bouchard B., Hausier R., Cyr DG, Blaise C., Fournier M., 2008. Effects of ozone, ultraviolet and peraceticacid disinfection of a primary-treated municipal effleunt on the immune system of rainbow trout (Oncorhychus mykiss) Comp Biochem Physiol C 148: 122-127). Thus, most of the adverse effects detected after exposure to urban wastewater effluents have been attributed to the presence of emerging pollutants, more specifically to the presence of pharmaceutical products (Gagne F, Berube E, Fournier M, Blaise C. 2005 lnflammatory properties of municipal effluents to Elliptio complanata mussels-lack of effects from anti-inflammatory drugs Comp Biochem Physiol e Toxicol Pharmacol, 141 (4): 332-337; Kuster M., Lopez de Alda MJ, Hernando MD, Petrovic M ., Martln-Alonso J., Barcelo D., 2008. Analysis and occurrence of pharmaceuticals, estrogens, progestogens and polar pesticides in sewage treatment plant effluents, river water and drinking water in the Llobregat river basin (Barcelona, Spain). Hydrology, 358: 112-123 and Kock-Schulmeyer M., Ginebreda A., Postigo C., Lopez-Serna R., Perez S., Barcelo D. 2011. Wastewater reuse in Mediterranean semi-arid areas: The impact of discharges of tertiary treated sewage on the l oad of polar micro pollutants in the Llobregat river (NE Spain). Chemosphere, 82: 670-678). In fact, its presence has been verified in sewage from numerous countries such as Finland (Lundqvist, J., Tortajada, C., Varis, O., Biswas, A. 2005. Water management in megacities. Ambio, 34: 269-270 ), Canada (Gagne F., Blaise C., Andre C.,
    2006. Occurrence of pharmaceutical products in a municipal effluent and toxicity to rainbow trout (Oncorhynchus mykiss) hepatocytes. Ecotoxicol Enviran Saf, 64: 329-36), France, Greece and Italy (Ferrari, B., Paxeus, N., Lo Giudice, R., Pollio, A., Garric, J. 2003. Ecotoxicological impact of pharmaceuticals found in treated wastewaters: study of carbamazepine, clofibric acid, and diclofenac. Ecotoxicol Enviran Saf, SS: 359-70), Spain (Carballa M., Omil F., slogan JM, Llompart M., Garcla-Jares C., Rodriguez I. 2004. Behavior of pharmaceuticals, cosmetics and hormones in a sewage treatment plant, Water Res, 38: 2918-26), etc ...
    However, the work done so far has used a "timely" sample of a given effluent (although this is supplied continuously to the tanks where the organisms are established). (e.g. Gagne, F., Cejka, P., Andre, C., Hausler, R., Blaise, C.
    2007. Neurotoxicological effects of a primary and ozonated treated wastewater on freshwater mussels exposed to an experimental flow-through system. Comp Biochem Physiol C Toxicol Pharmacol, 146 (4): 460-470). At most, continuous exposure tests have been carried out on a "mixed" (but "discrete") sample of an effluent. These methodologies do not allow obtaining a sample of the effluent representative of it over time.
    The technologies that make up the state of the art suffer from the representativeness of the effluent, making it impossible through them to record and evaluate the hourly, daily and / or monthly variations of the composition of a given effluent.
    This deficiency of the state of the art has led the authors of the present invention to develop a technology that allows to work with the continuous flow of the original effluent from the WWTP in which it is installed, allowing to record variations in the
    5
    10
    fifteen
    twenty
    25
    30
    35
    40
    Four. Five
    fifty
    composition in time of said effluent and being able to evaluate in real time what is poured into the treatment plant, since the feed is formed by aliquots of the effluent at each instant of discharge.
    Description of the invention
    The present invention consists of a mobile unit for the evaluation and control of the impact of effluents from Wastewater Treatment Plants in marine ecosystems, in order to determine if they pose a potential risk to the receiving marine ecosystems, which allows toxicity tests to be carried out. in situ of variable duration, exposing different bioindicator species (belonging to different taxonomic groups) to the effluent in real time with a continuous renewal of water throughout the entire experiment, which also offers the possibility of establishing different dilutions of the effluent with The idea of simulating the actual concentrations of spills and being able to determine dilutions that generate environmental risks in the receiving environment, as well as quality guidelines, while controlling certain variables (temperature, salinity, dissolved oxygen and photoperiod) to avoid the influence of same in toxicological results.
    The use of the invention allows to determine if the treatments to which the effluents of a given WWTP are subjected, following the guidelines established by the European Directive 91/271 / EEC, are sufficient to obtain an effluent that does not pose a potential risk to receiving marine ecosystems.
    The current methods in which "punctual" samples are used did not allow obtaining a sample of the representative effluent over time. The proposed invention works directly with the original effluent of the WWTP in which it is installed in continuous flow, allowing, in turn, to record the variations of the composition over time of said effluent, being able to evaluate in real time what the sewage plant pours , being the feed formed by aliquots of the effluent at each instant of discharge.
    Additionally, the system can operate in another way that allows only the potential adverse effect of the contaminants dissolved in the wastewater to be evaluated without interference with the variation in salinity inherent in dilutions. For this, it is necessary to set a constant salinity value in all tanks, choosing the representative value of the seawater in the area. In this way, the possible stress that low salinity values could cause in stagnant organisms is eliminated.
    Another distinguishing feature of the invention is the generation of dilutions without pumping units thanks to the use of solenoid valves. Both the circulation and the mixtures of dilutions in the different tanks are achieved by gravity and the use of electrovalves that make the dilution interval wider and its control more precise. All this results in lower costs and system maintenance requirements.
    The invention is implemented using a prefabricated transportable module, which incorporates the necessary elements to carry out the different dilutions of wastewater / effluent and seawater in which individuals of the different bioindicator species (belonging to different taxonomic groups) that are selected being able to perform, simultaneously, replicates of each of the dilutions.
    The effluent enters the system continuously thanks to the pumping from the secondary decanter or from any other point of the WWTP (pretreatment, treatment
    5
    10
    fifteen
    twenty
    25
    30
    35
    40
    Four. Five
    fifty
    primary, leachate from sludge treatment). A continuous flow of said effluent to a tank is established in the upper part of the transportable module so that the hydraulic residence time is less than or equal to one hour in order that the sample is representative of the nature of the effluent in each moment. From there, it goes to a second tank, inside the module, which acts as a reservoir of wastewater to make the various dilutions with seawater. The transit of the effluent between the first and the second tank is carried out by means of a solenoid valve controlled by a level.
    In turn, the system has a seawater tank of high autonomy (more than 4 days) whose content is pumped to a second seawater tank that acts as a reservoir for it, located at the highest point of the system and at the same height as reserving it of wastewater. The pumping flow is regulated by a level control that ensures a constant volume in said reservoir.
    Thanks to the combined system of solenoid valves and the action of gravity, the different dilutions programmed in two tanks are carried out. From these, by gravity, the different aquariums that, for each dilution, constitute the replicates of the same are filled to the same volume. For this, all replicates of a specific dilution are located at a lower height than the tank in which said dilution was made. It is in these test tanks where the organisms that are subjected to the toxicity test are established.
    To make possible the evaluation of the potential adverse effect of the contaminants dissolved in the wastewater (and in dilutions thereof) without interfering with the variation in salinity, the unit is provided with a brine tank whose content can be pumped to a second tank that acts as a reservoir of it, located at the highest point of the system, so that when it is conveniently diluted with wastewater, the effluent of the desired salinity results. This is achieved by testing the mixture of brine and wastewater with a conductimeter with the supply of the brine regulated by means of a control loop.
    The system has a compressor that injects air into all aquariums to ensure the maintenance of aerobic conditions as well as pneumatic mixing in all vessels.
    The whole device is thermostated thanks to a transportable module air conditioning system.
    The regulation of the opening / closing periods of the solenoid valves, as well as the photoperiod is carried out by means of a system of control of the installation based on a computer and an ad hoc control software, which allows the achievement of any dilution, Notifying of any deviation from the parameters introduced at the beginning of the test.
    The device has a system of shelves adjustable in height, to house the tanks used by the invention, favoring water flows by gravity.
    According to all of the above, the advantages presented by this invention in relation to the prior art are, among others:
    - Immediacy, comfort, realism, ... in the realization of the tests in situ in each WWTP that requires the service of the mobile unit. It involves an à la carte technique, not a generic procedure, since each treatment station uses different technologies and
    5
    10
    fifteen
    twenty
    25
    30
    35
    40
    Four. Five
    fifty
    it treats effluents of different characteristics that are poured into different marine ecosystems.
    - Possibility of studying the seasonality of the effluent in real time.
    - Possibility of detection of emerging pollutants at low concentrations and discrimination of acute and chronic effects.
    - Possibility of realization of tests of long exposure times and with several species simultaneously.
    - It allows the use of a stepped methodology (TIER) that allows to evaluate the potential irrigation that an effluent can suppose for the concrete ecosystem where it is discharged.
    - Enables the recreation of different problem-water situations and at different dilutions.
    - Enables the establishment of comparisons between methodologies and / or WWTPs.
    - Possibility of conducting WET tests (whole effluent toxicity), treating the effluent as a single contaminant that produces adverse effects on the environment and organisms.
    - Possibility of managing risk by creating new glues and guidelines that may be a complement to Directives 91/271 / EEC and Water Framework 2000/60 / EC in order to reduce the environmental risk of urban wastewater effluents for marine ecosystems
    - Allows the calculation of new quality criteria for the evaluation and management of WWTP effluents, complementary to those already existing.
    Description of the content of the figures
    Figure 1 shows a general aspect of the Mobile Unit for the evaluation and control of the impact of effluents from Wastewater Treatment Plants in marine ecosystems. Are mentioned:
    B1.- Pump that drives the effluent from the outlet of the secondary decanter (or from any other point of the WWTP) to the AR-I transit tank.
    AR-I.- Waste water transit tank, in which a THR <1 hour is ensured.
    AR-II.- Reservoir of wastewater used to make the different dilutions of the effluent with seawater that also accesses the system.
    SW-I.- Deposit of seawater of high autonomy due to the large volumes necessary to power the system.
    B2.- Pump that drives seawater from the SW-I tank to the SW-II. The pumping control is regulated by a level control that ensures a constant volume in SW-II.
    SW-II.- Seawater reservoir, located at the highest point of the system and at the same height as the residual water reservoir (AR-II).
    5
    10
    fifteen
    twenty
    25
    30
    35
    40
    Four. Five
    fifty
    D1, D2, Dn.- Dilution tanks, in which the different programmed dilutions between wastewater and seawater are carried out.
    R1a, R1b, Rnx.- Test tanks of each dilution. All replicates of a specific dilution are located at a lower height than the tank in which it was made. For example, for dilution 1 (Tank D1), replicates R1a, R1b, ... R1n will be established. It is in these test tanks where the organisms that are subjected to the toxicity test are established.
    CA.- Air compressor.
    SAL-l.- Large capacity brine tank that feeds when reserved for SAL-II brine.
    B3.- Pump that drives the brine from the SAL-I tank to the SAL-II. The pumping control is regulated by a level control that ensures a constant volume in SAL-II.
    SAL-II.- Brine reservoir ready for mixing with the effluent in the AR-I tank when required.
    Mode of realization of the invention
    The proposed system comprises the following components:
    1. Pump (B1) .-
    Pump that drives the effluent from the outlet of the secondary decanter (or from any other point of the WWTP) to the so-called Waste Water Transit Tank (AR-I).
    2. Wastewater Transit Tank (AR-I) .-
    Ensures the continuous flow of effluent from the WWTP with a hydraulic residence time equal to or less than one hour. In this way, it is ensured that the sample is representative of the nature of the effluent at all times given that it accesses the system continuously.
    3. Residual Water Reservoir (AR-II) .-
    Tank where the wastewater from AR-I is stored, which is used to make the different dilutions of the effluent with the seawater that also accesses the system. It has a conductimeter to measure the salinity of the effluent and an entrance from the brine reservoir (SAL-II) that will work only in certain cases (see later section "Brine Circuit").
    4. Seawater Deposit (SW-I) .-
    Deposit of seawater of more than four days of autonomy, due to the large volumes needed to power the system.
    5
    10
    fifteen
    twenty
    25
    30
    35
    40
    Four. Five
    fifty
    5. Pump (B2) .-
    Pump that drives seawater from the large volume tank (SW-I) to reserve it (SW-II). The pumping control is regulated by a level control that ensures a constant volume in SW-II.
    6. Reserve it from Agua de Mar (SW-II) .-
    Tank where sea water from the large volume tank (SW-I) is stored. It is located at the highest point of the system and at the same height as the reservoir of residual water (AR-II) to favor the different programmed dilutions between both types of water.
    7. Brine Deposit (SAL-I) .-
    This tank is intended to contain brine that when it is desired to evaluate the potential adverse effect of the contaminants dissolved in the wastewater (and in dilutions thereof) without interfering with it, the variation in salinity will be used by pumping it up to the brine reservoir. (SAL-II).
    8. Pump (B3) .-
    Pump that drives the brine from the SAL-II tank when reserved for brine SAL-II.
    9. Brine Reservoir (SAL-II) .-
    Tank where the brine can be conveniently diluted with wastewater, resulting in the desired salinity effluent. This is achieved by testing the mixture of brine and wastewater with a conductimeter with the supply of the brine regulated by means of a control loop.
    10. Dilution Tanks (D1, D2, ..., Dn) .-
    Thanks to the combined system of solenoid valves and the action of gravity, the different dilutions programmed in these tanks are carried out. The physical arrangement of tanks raised in the system (at different heights), therefore, takes advantage of the action of gravity, which lowers costs and maintenance and also makes the control of dilutions more precise. These dilution tanks directly feed the Test Tanks.
    11. Test Tanks (R1a, R1b, ..., R1x / R2a, R2b, ... Rnx) .-
    They are fed directly from the Dilution Tank of which they constitute replicates (duplicates, triplicates, etc.). They constitute the tanks where the organisms that are subjected to the toxicity test are established in order to evaluate the potential adverse effects of each dilution made. All replicates of a specific dilution have the same volume. For this, they are located at a lower height than the corresponding Dilution Tank and are filled by gravity with the water coming from it, regulating the volume by means of a level.
    12. Air compressor (AC) .-
    Compressor that injects air into all aquariums to ensure the maintenance of aerobic conditions as well! as pneumatic mixing in all containers.
    13. Air conditioning system.-
    The entire device is thermostated thanks to an air conditioning system (cold / heat pump)
    14. Installation control system.-
    An installation control system based on a computer and ad hoc control software, which allows the achievement of any dilution, warning of any incident with any of the parameters introduced at the beginning of the test, as well as controlling the photoperiod thanks to the remote control of the lighting system.
    权利要求:
    Claims (4)
    [1]
    5
    10
    fifteen
    twenty
    25
    30
    35
    40
    Four. Five
    fifty
    1. Mobile unit for the evaluation and control of the impact of effluents from wastewater treatment plants in marine ecosystems that makes use of a prefabricated transportable module, equipped with shelves, comprising:
    to. A tank of transit of residual water (AR-I) fed continuously with the effluent to be evaluated, with a hydraulic residence time equal to or less than one hour.
    b. A tank to reserve it of the residual water (AR-II) that is used to realize the different dilutions with the sea water.
    C. A reservoir of seawater (SW-1) of high autonomy (more than 4 days).
    d. Reserve the tank of the seawater (W-2) that is used to make the different dilutions with the wastewater.
    and. Pumps to boost effluent (B1), seawater (B2) and brine (B3) to their respective reservoirs.
    F. One or more Dilution Tanks (D1 to Dn), in which the different dilutions of seawater and wastewater are carried out.
    g. Two or more Test Tanks for each Dilution Tank (R1a, R1b, ..., Rnx), where to carry out the exposure of the specimens that are subjected to toxicity tests.
    h. An air compressor to ensure the maintenance of aerobic conditions as well as pneumatic mixing in all containers.
    i. Air conditioning system of the enclosure.
    j. Installation control system based on a computer and ad hoc control software, which allows the achievement of any dilution, warning of any incident in any of the operation meters, as well as controlling the photoperiod.
    [2]
    2. Mobile Unit for the evaluation and control of the impact of effluents from Wastewater Treatment Plants in marine ecosystems, according to revindication 1, characterized in that the reservoirs are located higher than the dilution tanks, and these in turn replicated to favor water flows between them by gravity.
    [3]
    3. Use of the unit according to claims 1 and 2, to perform in situ toxicity tests of varying duration, exposing different bioindicator species (belonging to different taxonomic groups) to the effluent in real time with a continuous water renewal or throughout the entire an experiment that also offers the possibility of establishing different dilutions of the effluent to simulate the actual concentrations of discharges and to determine dilutions that generate environmental risks in the receiving environment, while controlling certain variables (temperature, salinity, dissolved oxygen and photoperiod) ) to avoid their influence on toxicological results.
    [4]
    4. Use of the unit according to claims 1 and 2, to evaluate the potential adverse effect of the contaminants in the wastewater without interfering with the variation in salinity.
    类似技术:
    公开号 | 公开日 | 专利标题
    Yeh et al.2015|Artificial floating islands for environmental improvement
    Basile et al.2011|Review of endocrine-disrupting-compound removal technologies in water and wastewater treatment plants: an EU perspective
    Maier et al.2015|Biological plausibility as a tool to associate analytical data for micropollutants and effect potentials in wastewater, surface water, and sediments with effects in fishes
    Lundström et al.2010|Comparison of six sewage effluents treated with different treatment technologies—Population level responses in the harpacticoid copepod Nitocra spinipes
    Zhen-Guang et al.2013|Developing a national water quality criteria system in China
    Díaz-Garduño et al.2016|Are combined AOPs effective for toxicity reduction in receiving marine environment? Suitability of battery of bioassays for wastewater treatment plant | effluent as an ecotoxicological assessment
    de Souza Celente et al.2020|Acute ecotoxicity and genotoxicity assessment of two wastewater treatment units
    ES2637236B2|2018-02-05|Mobile unit for the evaluation and control of the impact of effluents from wastewater treatment plants in marine ecosystems.
    Miah et al.2016|Evaluation of microbial quality of the surface water of Hatirjheel in Dhaka City
    Dubé et al.2002|Artificial streams for environmental effects monitoring |: development and application in Canada over the past decade
    Al-Ghanim2012|Spatio-temporal distribution and composition of zooplankton in Wadi Hanifah stream Riyadh | and Abu Zabaal lakes |
    Das et al.2008|Environmental science: principles and practice
    Díaz-Garduño et al.2018|Health status alterations in Ruditapes philippinarum after continuous secondary effluent exposure before and after additional tertiary treatment application
    Naidoo2013|Assessment of the impact of wastewater treatment plant discharges and other anthropogenic variables on river water quality in the eThekwini Metropolitan area.
    Armstrong et al.2010|Manure spills and remediation methods to improve water quality
    Bertram et al.2022|Micropollutants
    Bhattarai et al.2020|Review of water pollution with special focus on Nepal
    Tyler et al.2011|Feminized fish, environmental estrogens, and wastewater effluents in English Rivers
    Griffin et al.2014|Effects of wastewater treatment plant effluent on survival, growth, and vitellogenin concentrations of fathead minnows |
    Holmes1996|Effluent control: the Hong Kong approach
    Padme Yogita2021|Impact of Wastewater on Urban Lakes: A Case Study of Aurangabad City | India
    Hogan2005|Endocrine-disrupting compounds in Kakadu National Park
    Sprague et al.2006|Effects of urbanization on stream ecosystems in the South Platte River Basin, Colorado and Wyoming
    Almeida2015|Electrodialytic recovery of phosphorus and organic contaminants removal from sewage sludge
    Cook2015|Endocrine-disrupting compounds: Measurement in Tampa Bay, removal from sewage and development of an estrogen receptor model
    同族专利:
    公开号 | 公开日
    WO2017178670A1|2017-10-19|
    ES2637236B2|2018-02-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5123438A|1991-11-20|1992-06-23|The United States Of America As Represented By The Secretary Of The Navy|Flow control and diluter system for bioassay testing|
    WO2001053517A1|2000-01-18|2001-07-26|Bioneer Corporation|Automatic water toxicity measuring apparatus|
    WO2013171667A1|2012-05-15|2013-11-21|Pompeo Moscetta|Device and method for the determination and monitoring of water toxicity|
    GB2080948B|1980-08-04|1983-09-21|Euratom|Apparatus and method for measuring the toxicity of pollutants to aquatic living organisms|
    US6093566A|1998-06-19|2000-07-25|Katznelson; Revital|Flow-through system and method for toxicity testing|
    法律状态:
    2018-02-05| FG2A| Definitive protection|Ref document number: 2637236 Country of ref document: ES Kind code of ref document: B2 Effective date: 20180205 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201600278A|ES2637236B2|2016-04-11|2016-04-11|Mobile unit for the evaluation and control of the impact of effluents from wastewater treatment plants in marine ecosystems.|ES201600278A| ES2637236B2|2016-04-11|2016-04-11|Mobile unit for the evaluation and control of the impact of effluents from wastewater treatment plants in marine ecosystems.|
    PCT/ES2017/000041| WO2017178670A1|2016-04-11|2017-03-30|Mobile unit for for assessing and controlling the impact of effluent from wastewater treatment plants on marine ecosystems|
    [返回顶部]