CN1594147A - Water treatment method for recycling bath sewage using biological active carbon - Google Patents
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Abstract
The invention discloses a water treatment method for recycling bath sewage using biological active carbon which comprises the steps of, (1) coagulating sedimentation and filtering, (2) entering immobilization biologically active charcoal reactor, (3) membrane filtering, (4) UV sterilization, wherein the immobilization biologically active charcoal reactor is provided with activated charcoal fixed by engineering bacterium, which is selected from anionic surface active agent degradation bacterium and/or degraded COD bacterium and/or nitrated bacterium.
Description
Technical field:
The present invention relates to a kind of water treatment method that bath sewage is recycled.
Background technology:
China is a lack of water country, particularly northern area water resources wretched insufficiency, becomes one of key factor of restriction socio-economic development.In the insufficient while of water resources, also there is water resources serious waste phenomenon, the repeating utilization factor of various industry waters is low, and a large amount of precious water resource have been discharged without using or only just becoming waste water through disposable use.Water saving, the new water resources of exploitation are imperative.All kinds of sewage recyclings are one of current important development trend.
Bathing already is the industry following China's Economic development and living standards of the people to improve and obtain developing rapidly, and various bathings place spreads all over big small city.Bathing already is city water consumption rich and influential family, one medium scale bathing pool day water consumption just reach the hundreds of ton, so the water saving potential of bathing industry is very big, can become the water saving rich and influential family.On the other hand, as regulating town water imbalance between supply and demand, water-saving economic leverage, the water price of putting into effect as the Harbin City has existing 5 yuan/ton to be adjusted to 10 yuan/ton bathing industry water price with water price in many cities.High water price will cause bathing already to manage the repeating utilization factor of water saving, raising water.
In the past after treatment main of bath wastewater utilize approach be as service water supply, field irrigation, water and spill greenery patches road, water scenery fountain, or as miscellaneous water such as clean automobile, flush the toilet, it can not be as the bathing water circulation use, and this causes the waste of water to a certain extent.
Summary of the invention:
The object of the present invention is to provide and a kind ofly make water after the processing as the supply of bathing pool water, what can recycle is the main water treatment method of realizing that bath sewage recycles with the biological activated carbon, this method comprises A. coagulation-precipitation successively, filter the pretreatment technology of materialization, B. enter the immobilized biological activated carbon reactor, C. membrane filtration, D.UV four processes of sterilizing, wherein the described immobilized biological activated carbon inside reactor of B step is equipped with gac, be fixed with engineering bacteria on gac, described engineering bacteria is bacterium and/or the nitrobacteria of anion surfactant degradation bacteria and/or degraded COD.The present invention is applied to immobilized biological activated carbon reactor (being the IBAC reactor) in the method, and former water (bath wastewater) enters the IBAC reactor on coagulation-precipitation and filtering pretreated basis; And the formation of IBAC reactor is the efficient engineering bacteria that will manually separate, screen, tame out be combined into dominant microflora after, be fixed on the gac, mainly be to remove the pollutent that still contains in the water after the pre-treatment, can further reduce the indexs such as permanganate index, MBAS, turbidity, ammonia nitrogen of water.The IBAC reactor is removed when realizing multiple pollutent, for guaranteeing the qualified enormous function of having brought into play of effluent quality.By the analysis to the GC/MS laboratory test results, IBAC handles the organic pollutant that is contained in the water of back and significantly reduces on value volume and range of product, can further guarantee the security of reuse water.The water outlet of IBAC enters membrane module, and membrane module is mainly brought into play crown_interception, removes fine particle thing and microorganism in the water, and reuse water is played the effect of preliminarily pasteurized, is security personnel's processing unit of present method; At last through UV sterilization water outlet, through microbiological index analysis, all do not contain bacterium and coliform in the water outlet after film water outlet and UV sterilization, guaranteed that quality of reused water reaches the requirement of hygienic standard, used the water quality after the inventive method is handled to reach Drinking Water hygienic quality standard (2001).
Description of drawings:
Fig. 1 is a strain separating schematic flow sheet of the present invention, and Fig. 2 is the device synoptic diagram of strain expanded culture, and Fig. 3 is the process flow sheet of treatment process of the present invention.
Embodiment:
Embodiment one:
The water treatment method of present embodiment comprises A. coagulation-precipitation, filters the pretreatment technology of materialization, and B. enters the immobilized biological activated carbon reactor, the C. membrane filtration, and D.UV four processes of sterilizing:
The described pretreatment process of A step is: (a). coagulation: add the polymerize aluminum chloride coagulating agent in sewage, the throwing amount is 10～50mg/L, and the coagulation time is no more than 30min; (b). precipitation: quiescent setting 10～30min then; (c). filter: get final product through quartzy sand filtration post, the high 2～2.5m of the post of described quartzy sand filtration post, thickness of filter bed are 1.2～1.5m, support bed thickness 0.1～0.4m again; Filtering velocity is 7～20m/h.
The described immobilized biological activated carbon inside reactor of B step is equipped with gac, the whole height of immobilized biological activated carbon reactor is 200～300cm, its internal structure is, load the supporting layer of height 10～30cm at the reactor inner bottom part, supporting layer top is gac, the height of gac is 100～150cm, in the present embodiment, the whole height of immobilized biological activated carbon reactor is 200cm, particle diameter 10～20cm is loaded in the synthetic glass column bottom of internal diameter φ 4.5cm, highly for the gravel of 10cm be supporting layer, the particle diameter that recharges is the granulated carbon of 4.5cm, packing height is 110cm, be fixed with engineering bacteria on gac, described engineering bacteria is bacterium and/or the nitrobacteria of anion surfactant degradation bacteria and/or degraded COD; The method that engineering bacteria is fixed on the gac is: at first, with gac with tap water soak, flushing, to water outlet as clear as crystal till; The branch that anhydrates that inclines, in the post of packing into to specified altitude; In the charcoal post, inject engineering bacteria bacterium liquid then, behind the submergence charcoal layer, emit, wash 15min with tap water behind the 24h, promptly finish engineering bacteria fixing on gac by the flow velocity of 4h circulation primary.
Engineering bacteria is meant by separation, screening and domestication, and the utilization biotechnology, the superior microorganism population of high reactivity blended directive breeding, that be used for actual biological treatment device pure culture.Seek out highly active engineering bacteria, at first should find provenance, the purpose of screening that Here it is.And the engineering bacteria that is screened must assurance not be a pathogenic micro-organism.
The preparation process of aforementioned engineering bacteria is as follows: a. screening: (1) joins mud, bath wastewater on soil, the bathing pool draining borehole wall to make in the triangular flask that contains basic medium 150mL and keeps liquid state in the bottle, constant temperature culture, when treating that muddiness takes place nutrient solution, with aseptic pipette, extract nutrient solution, move in another triangular flask that contains basic medium 150mL; Move so continuously and connect 3～6 times, just obtain the microorganism mixed culture that required engineering bacteria has comparative advantage at last; (2) coating separates: with the nutrient solution of sterilization pipette, extract through enrichment culture, adding contains in the triangular flask of 90mL aqua sterilisa, adds several granulated glass spherees, fully concussion; The preparation serial dilutions gets 10
-5～10
-8Each one of diluent is containing on the cultivation agar plate of bathing water and above-mentioned anion surfactant with the coating of sterilization scraper respectively, and each extent of dilution is made two parallel samples, and the flat board of coating is inverted incubator again and was cultivated 4～6 days after leaving standstill 2h under the room temperature.(3) line separates: the plate of choosing colony number about 40, at room temperature placed 4～6 days, the bacterium colony proterties is showed more fully, picking list bacterium colony is transferred on slant tube, the bacterium colony that will have various trait is again containing the purifying of ruling on the bathing water nutrition agar plate, dull and stereotyped inversion incubator 4～6 days; Repeat above operation, pure until dividing; B. cultivate and tame: cultivate and the purpose of domestication exactly by eutrophy to poor nutrition, poor nutrition to the eutrophic process of taming repeatedly, finally make the bacterial strain that filters out can in bathing water, grow and the bathing water of can degrading in anion surfactant.The nutrient solution that cultivation and domestication process are adopted is the concentration that reduces nutritive medium successively, the ratio that increases the domestication water sample simultaneously gradually realizes the operation of poor cultivation, and then reduce the ratio of domestication water sample successively, the concentration of liquid of having additional nutrients gradually simultaneously realizes rich operation of cultivating, this process is promptly finished the domestication process repeatedly; The domestication end of processing promptly obtains required engineering bacteria; The cultivation of engineering bacteria with the detailed process of domestication is: basic medium by containing the different numberings of bathing water concentration, is numbered 1～No. 11 from the high-concentration culturing base to the lower concentration substratum, that is: No. 1 substratum: 100% basic medium; No. 2 substratum: the bathing water that 90 parts No. 1 substratum adding by weight is 10 parts; No. 3 substratum: the bathing water that 80 parts No. 2 substratum addings by weight are 20 parts; No. 10 substratum: the bathing water that 10 parts No. 9 substratum addings by weight are 90 parts; No. 11 substratum: 100% bathing water;
With the pure bacterium liquid that accounts for basic medium weight 5% with No. 1 substratum as nutrition source, cultivate 48h for 30 ℃, then with bacterium liquid from No. 1 substratum pipettes No. 2 substratum, cultivate 48h for 30 ℃, again with bacterium liquid from No. 2 substratum pipette No. 3 substratum, 30 ℃ cultivate 48h...... with bacterium liquid from No. 10 substratum pipette No. 11 substratum, cultivate 48h for 30 ℃; And then with bacterium liquid from No. 11 substratum pipette No. 10 substratum, cultivate 48h for 30 ℃, again with bacterium liquid from No. 10 substratum pipette No. 9 substratum, 30 ℃ cultivate 48h...... at last with bacterium liquid from No. 2 substratum pipette No. 1 substratum, cultivate 48h for 30 ℃; This process is an one-period;
Cultivate 4 cycles as stated above, promptly obtain described engineering bacteria, the engineering bacteria that is screened can be a nutrition source with bathing water fully, and cultivating through aeration can be with the pollution components oxidative degradation in the bathing water.
The strain separating schematic flow sheet that is shown in Figure 1, wherein, 1 process is for diluting plate, 2 processes are picking colonies typical tube, and 3 processes are that the plate line separates, and 4 processes are picking colonies typical tube, 5 processes are that the plate line separates, and 6 processes are picking typical case bacterium tube.
In aforementioned (1) step, when the engineering bacteria of preparation was the anion surfactant degradation bacteria, the composition and the content of basic medium were as follows: (NH
4)
2SO
41.0g, MgSO
47H
2O0.3g, KH
2PO
40.3g, NaCl0.3g, yeast extract paste 0.1g, anion surfactant 0.1g, distilled water 1000mL, pH7.2,121 ℃ of sterilization 20min;
In aforementioned (1) step, when the engineering bacteria of preparation was the bacterium of degraded COD, the composition and the content of basic medium were as follows: extractum carnis 3g, peptone 10g, NaCl5g, distilled water 1000mL, pH7.2,121 ℃ of sterilization 30min.
In aforementioned (1) step, when the engineering bacteria of preparation was nitrobacteria, the composition and the content of basic medium were as follows: NaNO
21.0g, Na
2CO
31.0g, NaH
2PO
40.25g, CaCO
31.0g, K
2HPO
40.75g, MnSO
40.01g, MgSO
44H
2O0.03g, distilled water 1000mL, pH7.2,121 ℃ of sterilization 30min.
Obtaining behind the required engineering bacteria also can be with its enlarged culturing: after will taming bacterium liquid do the bacterium source, use the mixed culture medium enlarged culturing.Culture apparatus is seen Fig. 3, and wherein 7 is oxygen pump, and 8 is injection port, and 9 is aeration head, and 10 is water outlet.
Culture condition: 30 ℃, the 48h aeration.
Training method: in the engineering bacteria basic medium, add the pure bacterium liquid that accounts for its weight 5%, 30 ℃, the 48h aeration, and then engineering bacteria taken out, put into the engineering bacteria basic medium and account for gross weight 90%, bathing water accounts in the mixing liquid of gross weight 10%, 30 ℃, the 48h aeration takes out engineering bacteria again, puts into the engineering bacteria basic medium and accounts for gross weight 80%, bathing water accounts in the mixing liquid of gross weight 20%, 30 ℃, 48h aeration ... engineering bacteria is taken out, put into the engineering bacteria basic medium and account for gross weight 10%, bathing water accounts in the mixing liquid of gross weight 90%, 30 ℃, the 48h aeration, again engineering bacteria is taken out, put into 100% bathing water, 30 ℃, the 48h aeration is to reaching needed bacterium liquid measure 10
3～10
5Cfu/mL promptly can reach the required bacterium amount of immobilization, uses in order to follow-up test.
The described membrane filtration process of C step is for adopting microfiltration membrane or ultra-filtration membrane, and the aperture of film is less than 0.1 μ m.Film can be given full play to its crown_interception, realizes the interception to particulate matter and microorganism.
The described UV sterilizing process of D step is for adopting the uv sterilisation pipe sterilization of drink water purifying.
Embodiment two: present embodiment is the contrast experiment that checking beneficial effect of the present invention is done.
Prior art adopts following method to handle bath sewage: former water → micro flocculating filter device → hollow fiber ultrafiltration membrane → sterilization → reuse, the water quality after the processing are that colourity does not have, and smell flavor and do not have LAS0.34mg/L, total plate count 100cfu/ml; Coliform group count is greater than 3/L water sample, and these indexs can reach miscellaneous domestic water quality standard (CJ25.1-89).Water after the processing can be used for afforesting, gives the car a wash, purposes is used mixedly in sprinkle road and lavatory etc.
The condition of water quality of the bath wastewater that this test is selected for use is as follows: temperature 30-35; Colourity 5-15 degree; Turbidity 35-120NTU; PH6.8-8.4; There is intensive to bathe fragrance; Permanganate index 10.0-75.0mg/L; MBAS 0.50-5.32mg/L; Ammonia nitrogen 0.33-2.25mg/L; Total plate count 1.1 * 10
4-1.8 * 10
4Cfu/ml; Coliform group count is greater than the 1600/100mL water sample.Enter coagulation basin, settling tank, sand filtration behind the bath wastewater dosing coagulant, enter the IBAC reactor afterwards, sterilization gets final product water outlet through membrane filtration and UV again, so present method can be pre-treatment, IBAC, membrane filtration and UV 4 parts of sterilizing, and the every data in the test also are that such segmentation detects.
Evidence, can make turbidity 5.5-12NTU, permanganate index 5.60-14.00mg/L, anion surfactant 0.60-2.59mg/L, index such as smell and decrease through coagulation-precipitation, filtration bath wastewater, but can not remove fully, ammonia nitrogen after this stage processing in the bathing water also can raise to some extent, reaches 3.85-9.79mg/L.
The employed IBAC reactor of this test is to constitute with following method: employing separates from bath wastewater, screens and the degradation of organic substances that domestication is come out, the bacterium and the nitrobacteria of anionic detergent are combined into engineering bacteria flora efficiently, adopt the mode of physical adsorption, be fixed on the gac, promptly formed the IBAC device.Through turbidity after the IBAC processing is 1.06-3.72NTU, and permanganate index is lower than 3mg/L, and MBAS is lower than 0.30mg/L, 0 grade of water of smelling flavor, and ammonia nitrogen is lower than 1mg/L.By the interpretation of result of GC/MS test experience as can be known the water inlet of IBAC detected 48 kinds of organism altogether, after handling through IBAC, detect 24 kinds of organism altogether, the organism of handling in the water of back quantitatively also significantly reduces, peak area be into water 32.4%.IBAC is the processing unit that can effectively remove multiple pollutent in the water simultaneously.
The polysulfone hollow fiber ultrafiltration membrane system that membrane filtration adopts film sky, Tianjin film to produce, model is MIF, physical dimension is D=50mm, H=500mm, membrane pore size is 0.1 μ m, water production rate is 40～50L/h, working pressure＜0.12Mpa.Through the membrane filtration effect, the turbidity of water outlet is less than 1NTU, and all other indexs also decrease, so membrane filtration is that the necessity that guarantees water quality is formed link.Detection by total plate count and coliform sum in the water before and after the holistic approach processing, can know that former water is through coagulation-precipitation, filtration, these two indexs were underproof after IBAC handled, and all satisfied Drinking Water hygienic quality standard (2001) through these two indexs after the membrane filtration.
The UV uv sterilisation pipe that this test is adopted is the uv sterilisation pipe by the NLC-008 type of the New World, Fujian production, and the service requirements of equipment is T254 〉=95% of water inlet, handles the water yield≤0.3t/h.All do not detect through bacterium and coliform after the UV sterilization.
Therefore adopting IBAC is that each link all is necessary in this method of leading, and the effluent index that this method is handled bath wastewater is to reach Drinking Water hygienic quality standard (2001).Therefore the inventive method is to be applicable to the processing bath wastewater, and the economic balance of this method is: with bath water amount 0.2m
3/ people adopts the bathing pool of bathing water reuse apparatus to have 150 people to have a bath average every day, but this bathing pool water saving every day 21m
3, cut down expenses 124.2 yuan; Can save 4.22 ten thousand (by 340 days) in such 1 year, facility investment 1 year is just recyclable, remarkable in economical benefits.
Claims (9)
1, a kind of is the main water treatment method of realizing that bath sewage recycles with the biological activated carbon, it is characterized in that this method comprises A. coagulation-precipitation successively, filters the pretreatment technology of materialization, B. enter the immobilized biological activated carbon reactor, C. membrane filtration, D.UV four processes of sterilizing, wherein the described immobilized biological activated carbon inside reactor of B step is equipped with gac, be fixed with engineering bacteria on gac, described engineering bacteria is bacterium and/or the nitrobacteria of anion surfactant degradation bacteria and/or degraded COD.
2, according to claim 1 is the main water treatment method of realizing that bath sewage recycles with the biological activated carbon, the preparation process that it is characterized in that described engineering bacteria is as follows: a. screening: (1) joins mud, bath wastewater on soil, the bathing pool draining borehole wall to make in the triangular flask that contains basic medium 150mL and keeps liquid state in the bottle, constant temperature culture, when treating that muddiness takes place nutrient solution, with aseptic pipette, extract nutrient solution, move in another triangular flask that contains basic medium 150mL; Move so continuously and connect 3～6 times, just obtain the microorganism mixed culture that required engineering bacteria has comparative advantage at last; (2) coating separates: with the nutrient solution of sterilization pipette, extract through enrichment culture, adding contains in the triangular flask of 90mL aqua sterilisa, adds several granulated glass spherees, fully concussion; The preparation serial dilutions gets 10
-5～10
-8Each one of diluent is containing on the cultivation agar plate of bathing water and basic medium with the coating of sterilization scraper respectively, and each extent of dilution is made two parallel samples, and the flat board of coating is inverted incubator again and was cultivated 4～6 days after leaving standstill 2h under the room temperature; (3) line separates: the plate of choosing colony number about 40, at room temperature placed 4～6 days, the bacterium colony proterties is showed more fully, picking list bacterium colony is transferred on slant tube, the bacterium colony that will have various trait is again containing the purifying of ruling on the bathing water nutrition agar plate, dull and stereotyped inversion incubator 4～6 days; Repeat above operation, pure until dividing; B. cultivate and tame: the nutrient solution that cultivation and domestication process are adopted is the concentration that reduces nutritive medium successively, the ratio that increases the domestication water sample simultaneously gradually realizes the operation of poor cultivation, and then reduce the ratio of domestication water sample successively, the concentration of liquid of having additional nutrients gradually simultaneously realizes rich operation of cultivating, this process is promptly finished the domestication process repeatedly; The domestication end of processing promptly obtains required engineering bacteria;
In aforementioned (1) step, when the engineering bacteria of preparation was the anion surfactant degradation bacteria, the composition and the content of basic medium were as follows: (NH
4)
2SO
41.0g, MgSO
47H
2O 0.3g, KH
2PO
40.3g, NaCl 0.3g, yeast extract paste 0.1g, anion surfactant 0.1g, distilled water 1000mL, pH7.2,121 ℃ of sterilization 20min;
In aforementioned (1) step, when the engineering bacteria of preparation was the bacterium of degraded COD, the composition and the content of basic medium were as follows: extractum carnis 3g, peptone 10g, NaCl5g, distilled water 1000mL, pH7.2,121 ℃ of sterilization 20min;
In aforementioned (1) step, when the engineering bacteria of preparation was nitrobacteria, the composition and the content of basic medium were as follows: NaNO
21.0g, Na2CO
31.0g, NaH
2PO
40.25g, CaCO
31.0g, K
2HPO
40.75g, MnSO
40.01g, MgSO
44H
2O 0.03g, distilled water 1000mL, pH7.2,121 ℃ of sterilization 30min.
3, according to claim 2 is the main water treatment method of realizing that bath sewage recycles with the biological activated carbon, it is characterized in that the cultivation of described engineering bacteria and the detailed process of domestication are: with basic medium by containing the different numberings of bathing water concentration, be numbered 1～11 from the high-concentration culturing base to the lower concentration substratum, that is: No. 1 substratum: 100% basic medium; No. 2 substratum: the bathing water that 90 parts No. 1 substratum adding by weight is 10 parts; No. 3 substratum: the bathing water that 80 parts No. 2 substratum addings by weight are 20 parts; No. 10 substratum: the bathing water that 10 parts No. 9 substratum addings by weight are 90 parts; No. 11 substratum: 100% bathing water;
With the pure bacterium liquid that accounts for basic medium weight 5% with No. 1 substratum as nutrition source, cultivate 48h for 30 ℃, then with bacterium liquid from No. 1 substratum pipettes No. 2 substratum, cultivate 48h for 30 ℃, again with bacterium liquid from No. 2 substratum pipette No. 3 substratum, cultivate 48h for 30 ℃ ... bacterium liquid from No. 10 substratum pipette No. 11 substratum, is cultivated 48h for 30 ℃; And then with bacterium liquid from No. 11 substratum pipette No. 10 substratum, cultivate 48h for 30 ℃, again with bacterium liquid from No. 10 substratum pipette No. 9 substratum, cultivate 48h for 30 ℃ ... at last with bacterium liquid from No. 2 substratum pipette No. 1 substratum, cultivate 48h for 30 ℃; This process is an one-period;
Cultivate 4 cycles as stated above, promptly obtain described engineering bacteria.
4, according to claim 1,2 or 3 described be the main water treatment method of realizing that bath sewage recycles with the biological activated carbon, it is characterized in that described pretreatment process is: (a). coagulation: in sewage, add the polymerize aluminum chloride coagulating agent, the throwing amount is 10～50mg/L, and the coagulation time is no more than 30min; (b). precipitation: quiescent setting 10～30min then; (c). filter: get final product through quartzy sand filtration post again.
5, according to claim 4 is the main water treatment method of realizing that bath sewage recycles with the biological activated carbon, it is characterized in that the high 2～2.5m of post of described quartzy sand filtration post, and thickness of filter bed is 1.2～1.5m, support bed thickness 0.1～0.4m; Filtering velocity is 7～20m/h.
6, according to claim 1,2 or 3 described be the main water treatment method of realizing that bath sewage recycles with the biological activated carbon, it is characterized in that described immobilized biological activated carbon reactor whole height be 200～300cm, its internal structure is, loading at the reactor inner bottom part highly is the supporting layer of 10～30cm, supporting layer top is gac, the height of gac is 100～150cm, described engineering bacteria is fixed on the gac get final product.
7, according to claim 6 is the main water treatment method of realizing that bath sewage recycles with the biological activated carbon, it is characterized in that the method that described engineering bacteria is fixed on the gac is: at first, with gac with tap water soak, flushing, to water outlet as clear as crystal till; The branch that anhydrates that inclines, in the post of packing into to specified altitude; In the charcoal post, inject engineering bacteria bacterium liquid then, behind the submergence charcoal layer, emit, wash 15min with tap water behind the 24h, promptly finish engineering bacteria fixing on gac by the flow velocity of 4h circulation primary.
8, according to claim 1,2 or 3 described be the main water treatment method of realizing that bath sewage recycles with the biological activated carbon, it is characterized in that described membrane filtration process for adopting microfiltration membrane or ultra-filtration membrane, the aperture of film is less than 0.1 μ m.
9, according to claim 1,2 or 3 described be the main water treatment method of realizing that bath sewage recycles with the biological activated carbon, it is characterized in that described UV sterilizing process is for adopting the uv sterilisation pipe of drink water purifying.
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Cited By (12)
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| CN1296297C (en) * | 2005-07-18 | 2007-01-24 | 武汉新天达美环境科技有限公司 | Deep cleaning treatment process for city effluent |
| CN100443034C (en) * | 2006-10-17 | 2008-12-17 | 西南化工研究设计院 | Showering water cyclic utilization system |
| CN102286390A (en) * | 2010-06-18 | 2011-12-21 | 辽宁北方环境保护有限公司 | Method for screening low temperature resisting nitrifying bacteria |
| WO2012119266A1 (en) * | 2011-03-07 | 2012-09-13 | General Electric Company | Method of removing recalcitrant organic pollutant |
| CN102745820A (en) * | 2012-02-28 | 2012-10-24 | 北京科技大学 | Method for removing MIB and Geosmin in water by using inoculation biofilter |
| CN103214114A (en) * | 2012-01-21 | 2013-07-24 | 高全财 | Bathing pool sewage reuse processing system |
| CN103663878A (en) * | 2013-12-24 | 2014-03-26 | 北京恒动环境技术有限公司 | Water treatment method for swimming pool or hydrotherapy pool |
| CN107512780A (en) * | 2017-09-29 | 2017-12-26 | 福建省农业科学院农业工程技术研究所 | A kind of bacterium carbon water purification agent for removing aquaculture wastewater middle and high concentration ammonia nitrogen and preparation method thereof |
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| CN109110947A (en) * | 2018-09-21 | 2019-01-01 | 浙江双林环境股份有限公司 | A kind of bath wastewater processing unit suitable for intelligent environment protection mobile washroom |
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- 2004-07-02 CN CNB200410043684XA patent/CN100467405C/en not_active Expired - Fee Related
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| CN1296297C (en) * | 2005-07-18 | 2007-01-24 | 武汉新天达美环境科技有限公司 | Deep cleaning treatment process for city effluent |
| CN100443034C (en) * | 2006-10-17 | 2008-12-17 | 西南化工研究设计院 | Showering water cyclic utilization system |
| CN102286390A (en) * | 2010-06-18 | 2011-12-21 | 辽宁北方环境保护有限公司 | Method for screening low temperature resisting nitrifying bacteria |
| CN103402928A (en) * | 2011-03-07 | 2013-11-20 | 通用电气公司 | Method of removing recalcitrant organic pollutant |
| WO2012119266A1 (en) * | 2011-03-07 | 2012-09-13 | General Electric Company | Method of removing recalcitrant organic pollutant |
| CN103402928B (en) * | 2011-03-07 | 2016-03-30 | 通用电气公司 | Remove the method for obstinate organic pollutant |
| US9994470B2 (en) | 2011-03-07 | 2018-06-12 | General Electric Company | Method of removing recalcitrant organic pollutants |
| CN103214114A (en) * | 2012-01-21 | 2013-07-24 | 高全财 | Bathing pool sewage reuse processing system |
| CN102745820A (en) * | 2012-02-28 | 2012-10-24 | 北京科技大学 | Method for removing MIB and Geosmin in water by using inoculation biofilter |
| US9902636B2 (en) | 2012-09-10 | 2018-02-27 | General Electric Company | Method of reducing residual recalcitrant organic pollutants |
| CN103663878A (en) * | 2013-12-24 | 2014-03-26 | 北京恒动环境技术有限公司 | Water treatment method for swimming pool or hydrotherapy pool |
| CN107512780A (en) * | 2017-09-29 | 2017-12-26 | 福建省农业科学院农业工程技术研究所 | A kind of bacterium carbon water purification agent for removing aquaculture wastewater middle and high concentration ammonia nitrogen and preparation method thereof |
| CN108503130A (en) * | 2018-03-08 | 2018-09-07 | 陈琪雯 | A kind of novel environment friendly sewage treatment process |
| CN109110947A (en) * | 2018-09-21 | 2019-01-01 | 浙江双林环境股份有限公司 | A kind of bath wastewater processing unit suitable for intelligent environment protection mobile washroom |
| CN109607897A (en) * | 2018-12-17 | 2019-04-12 | 上海电机学院 | A kind of water treatment cycle utilization system |
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