WO2002026638A1 - Systeme et procedes ameliores de purification d'eau comprenant la filtration biologique - Google Patents

Systeme et procedes ameliores de purification d'eau comprenant la filtration biologique Download PDF

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Publication number
WO2002026638A1
WO2002026638A1 PCT/US2001/041884 US0141884W WO0226638A1 WO 2002026638 A1 WO2002026638 A1 WO 2002026638A1 US 0141884 W US0141884 W US 0141884W WO 0226638 A1 WO0226638 A1 WO 0226638A1
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Prior art keywords
water
bacteria
disinfection
filter
toc
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PCT/US2001/041884
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English (en)
Inventor
Richard Alan Haase
Original Assignee
Richard Alan Haase
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Filing date
Publication date
Priority claimed from PCT/US2001/010426 external-priority patent/WO2001074725A1/fr
Application filed by Richard Alan Haase filed Critical Richard Alan Haase
Priority to AU2002211804A priority Critical patent/AU2002211804A1/en
Publication of WO2002026638A1 publication Critical patent/WO2002026638A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/07—Alkalinity
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/11—Turbidity
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/10—Temperature conditions for biological treatment
    • C02F2301/103—Psychrophilic treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/10—Temperature conditions for biological treatment
    • C02F2301/106—Thermophilic treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/02—Odour removal or prevention of malodour
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/06—Nutrients for stimulating the growth of microorganisms
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/06—Aerobic processes using submerged filters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • a “disinfection by-product” is formed by a first reaction of a chemical disinfectant, usually chlorine or ozone, onto an organic molecule that is a precursor to the final “disinfection by-product.”
  • a chemical disinfectant usually chlorine or ozone
  • the US Environmental Protection Agency (US EPA) has already targeted certain "disinfection by-products," the tri -halo-methane's (THM(s)) and the halo- acetic acids (HAA(s)), as specifically harmful molecules that must be in concentrations of less than 64 ppb and 48 ppb, respectively in potable, drinking, water.
  • THM(s) are documented carcinogens and HAA(s) are documented teratogens.
  • AOC Asssimulatable Organic Content
  • DOC molecules that cause taste and/or odor in water such as Geosmine and MIB, are currently removed by either ozonation in combination with ubiquitous biological filters or potassium permanganate in combination with powdered activated carbon.
  • Figure 1 illustrates in block diagram form a conventional or traditional water purification system of the conventional art.
  • the combination of hydrogen peroxide with a heavy metal immediately produces two hydroxyl radicals from the hydrogen peroxide.
  • the most preferred metal to catalyze hydrogen peroxide would be iron, since iron is nontoxic and inexpensive. In drinking water applications, care must be made in choosing a metal catalyst for hydrogen peroxide since many metals can make the water toxic.
  • Figure 1 illustrates in block diagram form a traditional or conventional water purification system.
  • stage 3 infrequently, a flocculant is added in the form of a polyquaternary amine or an anionic polyacrylamide. Infrequently, pH adjustment is performed to create hydroxide floe; minimizing flocculant addition. With the new coagulation technology, nearly all of the IOC molecules, including color, are removed in the floe, along with NTU.
  • Chlorine and Ammonia to create Chloramines would be preferred as Chloramines have a much less propensity to create chlorinated disinfection by-products than does Chlorine.
  • Chloramines in combination with DOC will produce Nitrosamines.
  • Chloramines may not be preferred.
  • ClO 2 would be preferred as ClO 2 has a very low propensity to create halogenated disinfection by-products; however, in some waters, ClO 2 can create disinfection by-product of oxides of Chlorine. Oxides of Chlorine other than ClO 2 need to be avoided.
  • stage 4 separation normally occurs via gravity settling. Separation can occur via filtration or centrifugation. With the new coagulation technology, nearly all of the IOC molecules are removed in the floe.
  • a chemical disinfectant may be used for disinfection and/or to control algal growth in the clarifier. While traditional disinfectants have not been used at this step in concert with ozonation, if pre-ozonation is not used or if algae is a problem in the clarifier, hydrogen peroxide would be a preferred disinfectant to: control algae, provide disinfection contact time, minimize disinfection byproducts and provide oxygen for the bio-filter.
  • Fermentation-raised biological cultures refer to biological cultures as those cultures would be raised or fermented or grown in a biological reactor/incubation device to increase biomass prior to inoculation, colonization, on the bio-filters. These cultures would be defined by species to be sure of their pathogenicity. These cultures could be selectively cultured to consume specific substrates, whether those substrates are TOC or DOC. Further, many otherwise toxic TOC substrates can be selectively cultured. These cultures could be grown on-site prior to inoculation to minimize the amount of bacteria to be shipped to the site.
  • enzymes can be less than 1 micron in size, enzymes are not as desirable as bacterial cultures, as some enzymes could pass through the final filter.
  • the above list is indicative of the strains that can be used; the list is not to be restrictive of the strains that can be used.
  • the strains be free of any viral or pathogenic properties. Whereas, Thiobacillus and Thiobacillus Denitrificanus do not remove TOC, Thiobacillus and Thiobacillus Denitrificanus can remove sulfides.
  • Thiobacillus Denitrificanus as well as many Denitrificanus species under low dissolved oxygen conditions (approximately ⁇ 0.6 ppm), can also remove oxides of nitrogen, such as nitrous oxide, nitrite or nitrate. While sulfides present water with an objectionable odor, Geosmine and MIB can present water with objectionable taste and odor. Since Geosmine and MIB are TOC molecules, blends of the above strains with Thiobacillus Denitrificanus can be used to specifically reduce objectionable taste and odor, as well as oxides of nitrogen, if needed.
  • the non-ubiquitous biological filter can have many physical configurations.
  • Nitrogen is an important nutrient for the bacteria.
  • Chloramines, Chlorine and Ammonia, in combination with DOC will produce Nitrosamines.
  • Chloramines, Chlorine and Ammonia in combination with DOC will produce Nitrosamines.
  • Ammonia may not be added.
  • phosphates to the water in the form of either phosphoric acid, phosphate salts or polymers of phosphate. Phosphate is an important nutrient for the bacteria.
  • Aluminum salts such as aluminum sulfate and aluminum chloride
  • Aluminum polymers such as aluminum chlorohydrate, poly-aluminum chloride, sulfated polyaluminum hydroxy chloride and poly-aluminum siloxane sulfate, have also been used in chemical water treatment.
  • AP(s) Aluminum polymers
  • the sulfated versions of aluminum polymers have been employed for cold temperature performance.
  • the new process for clarification of raw waters by chemical treatment without pre- oxidation is focused on the application of at least one of a medium or a high or a very high molecular weight ammonium polymer (AmP) in combination with aluminum polymers (AP(s)) or AP(s) in concert with aluminum salts (AS(s)) to treat the water.
  • AmP ammonium polymer
  • the optimal HMW AmP choice in a given circumstance may depend on the chemistry of the waters. If a polyacrylamide is used, the chemistry of the waters may determine that the optimum polyacrylamide be cationic, non-ionic or anionic.
  • the combination of AP and AmP may be further enhanced by blending the AP/AmP(s) with an aluminum salt (AS).
  • the AmP may be enhanced by blending with other medium, high or very high molecular weight AmP(s) and/or with low molecular weight quaternized ammonium polymers, such as DADMAC or Epi-DMA.
  • Vinyl polymers having water solubility and cationic characteristics include modified polyacrylamides, modification being made, for example, by the typical Mannich reaction products or the quaternized Mannich reaction products known to the artisan, or other vinylic polymers which use as a vinyl monomer those monomers containing functional groups which have cationic character.
  • DEAEM Dimethylaminoethylmethacrylate and/or its acid salts
  • DMEAcAm Dimethylaminoethylacrylamide and/or its acid salts
  • DMAEMAcAm Dimethylaminoethylmethacrylamide
  • AS(s) such as aluminum chloride
  • DADMAC low molecular weight DADMAC
  • Blends of medium or high or very high molecular weight AmP(s) and low molecular weight DADMAC and/or low molecular weight Epi-DMA with at least one aluminum salt and/or at least one aluminum polymer have provided satisfactory results.
  • the city of Arlington, Texas operates two drinking water production plants.
  • ozonation is used in combination with a ubiquitous bio-filter.
  • Pre-ozonation is normally 0.6 to 0.8 mg/L of ozone.
  • the intermediate contact chamber is normally 3 to 5 mg/L of ozone.
  • Alum and a low molecular weight DADMAC are used as the coagulant and the flocculent, respectively.
  • the Alum dosage ranges from 16 to 25 mg/L and the 40% LMW DADMAC is kept near 1 mg/L.
  • the settled NTU will vary from approximately 1.5 to near 5.
  • the filtered NTU will vary in concert with the settled NTU, from 0.10 to near 0.30.
  • the non-ozonated water produced a 20 minute settled NTU of 1.2 with 6.5 mg/L of CV1120 and 0.065 mg/L of CV5140DP. On that day, the plant operated near 2.6 settled NTU with 20 mg/L of Alum in pre-ozonated water.
  • EXAMPLE 3 The city of Arlington, Texas operates two drinking water production plants. The Pierce-Birch Plant and the John Kabala Plant. At the Pierce-Birch Plant, ozonation is used in combination with a ubiquitous bio-filter. Pre-ozonation is normally 0.6 to 0.8 mg/L of ozone.
  • the intermediate contact chamber is normally 3 to 5 mg/L of ozone.
  • the city of Arlington, Texas operates two drinking water production plants.
  • ozonation is used in combination with a ubiquitous bio-filter.
  • Pre-ozonation is normally 0.8 to 1.2 mg/L of ozone.
  • the intermediate contact chamber is normally 2 to 4 mg/L of ozone.
  • Alum and a low molecular weight DADMAC are used as the coagulant and the flocculent, respectively.
  • the Alum dosage ranges from 18 to 25 mg/L and the 40%) DADMAC is kept near 1 mg/L.
  • the settled NTU is normally near 1.5.
  • the filtered NTU is normally near 0.20.
  • CV 1850 is on a mass basis: 73%> CVl 120 (Aluminum Chlorohydrate with an 84% basicity and 50% activity), 6% CV3650 (HMW DADMAC that is 20% active measuring 2000 +/- 300 cps), 8% CV3210 (LMW Epi-DMA that is 50% active measuring 100 +/- 20 cps) and 13% CV 3250 (HMW Epi-DMA that is 50% active measuring 8000 +/- 3000 cps).

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Microbiology (AREA)
  • Inorganic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

L'invention concerne un système à filtre biologique amélioré servant à purifier l'eau. Au moins une structure de filtre biologique est placée en amont de l'unité de désinfection d'une installation de purification d'eau et des colonies bactériennes obtenues par fermentation sont formées sur/dans la structure de filtre biologique. Par ailleurs, l'invention concerne des procédés améliorés de clarification d'eau faisant intervenir la coagulation associée à la filtration biologique et à la désinfection.
PCT/US2001/041884 2000-09-29 2001-08-27 Systeme et procedes ameliores de purification d'eau comprenant la filtration biologique WO2002026638A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002211804A AU2002211804A1 (en) 2000-09-29 2001-08-27 Improved system and processes for water purification that include bio-filtration

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US67569500A 2000-09-29 2000-09-29
US09/675,695 2000-09-29
US25495700P 2000-12-12 2000-12-12
US60/254,957 2000-12-12
PCT/US2001/010426 WO2001074725A1 (fr) 2000-04-03 2001-04-02 Procede de purification d'eau potable comprenant une biofiltration
USPCT/US01/10426 2001-06-12

Publications (1)

Publication Number Publication Date
WO2002026638A1 true WO2002026638A1 (fr) 2002-04-04

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004031083A1 (fr) * 2002-10-02 2004-04-15 Zenon Environmental Inc. Utilisation d'un polymere comme auxiliaire de floculation dans la filtration sur membrane
ITTO20100727A1 (it) * 2010-08-31 2012-03-01 Quanto Ltd Metodo per la purificazione delle acque
EP2727884A1 (fr) * 2012-11-06 2014-05-07 UPM-Kymmene Corporation Procédé pour éliminer l'encre flexographique et encre pour jet d'encre à base d'eau à partir de milieux aqueux et utilisation d'agents d'élimination d'encre flexographique et encre pour jet d'encre à base d'eau à partir de milieux aqueux
CN104118968A (zh) * 2014-07-04 2014-10-29 南华大学 一种用以污水处理的生物反应器
CN109074033A (zh) * 2016-04-01 2018-12-21 凯米罗总公司 用于优化水处理过程中的凝聚和/或絮凝的方法和系统
CN117923734A (zh) * 2024-03-21 2024-04-26 河北省科学院地理科学研究所 一种农村生活污水综合处理方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415450A (en) * 1981-12-28 1983-11-15 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method for treating wastewater using microorganisms and vascular aquatic plants
US5118426A (en) * 1990-07-26 1992-06-02 Olin Corporation Process for purifying impotable water with hypochlorous acid
US5466374A (en) * 1993-07-31 1995-11-14 Bachhofer; Bruno Process for treating organically polluted water
US5582732A (en) * 1995-03-31 1996-12-10 Aquatex Corporation Biological method of waste water treatment
US5932099A (en) * 1995-07-25 1999-08-03 Omnium De Traitements Et De Valorisation (Otv) Installation for biological water treatment for the production of drinkable water
US6120690A (en) * 1997-09-16 2000-09-19 Haase; Richard Alan Clarification of water and wastewater

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4415450A (en) * 1981-12-28 1983-11-15 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Method for treating wastewater using microorganisms and vascular aquatic plants
US5118426A (en) * 1990-07-26 1992-06-02 Olin Corporation Process for purifying impotable water with hypochlorous acid
US5466374A (en) * 1993-07-31 1995-11-14 Bachhofer; Bruno Process for treating organically polluted water
US5582732A (en) * 1995-03-31 1996-12-10 Aquatex Corporation Biological method of waste water treatment
US5932099A (en) * 1995-07-25 1999-08-03 Omnium De Traitements Et De Valorisation (Otv) Installation for biological water treatment for the production of drinkable water
US6120690A (en) * 1997-09-16 2000-09-19 Haase; Richard Alan Clarification of water and wastewater

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004031083A1 (fr) * 2002-10-02 2004-04-15 Zenon Environmental Inc. Utilisation d'un polymere comme auxiliaire de floculation dans la filtration sur membrane
ITTO20100727A1 (it) * 2010-08-31 2012-03-01 Quanto Ltd Metodo per la purificazione delle acque
EP2727884A1 (fr) * 2012-11-06 2014-05-07 UPM-Kymmene Corporation Procédé pour éliminer l'encre flexographique et encre pour jet d'encre à base d'eau à partir de milieux aqueux et utilisation d'agents d'élimination d'encre flexographique et encre pour jet d'encre à base d'eau à partir de milieux aqueux
CN104118968A (zh) * 2014-07-04 2014-10-29 南华大学 一种用以污水处理的生物反应器
CN104118968B (zh) * 2014-07-04 2016-03-02 南华大学 一种用以污水处理的生物反应器
CN109074033A (zh) * 2016-04-01 2018-12-21 凯米罗总公司 用于优化水处理过程中的凝聚和/或絮凝的方法和系统
US10988392B2 (en) 2016-04-01 2021-04-27 Kemira Oyj Method and system for optimization of coagulation and/or flocculation in a water treatment process
CN109074033B (zh) * 2016-04-01 2022-04-19 凯米罗总公司 用于优化水处理过程中的凝聚和/或絮凝的方法和系统
CN117923734A (zh) * 2024-03-21 2024-04-26 河北省科学院地理科学研究所 一种农村生活污水综合处理方法
CN117923734B (zh) * 2024-03-21 2024-05-31 河北省科学院地理科学研究所 一种农村生活污水综合处理方法

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