CN105502566A - Environment-friendly wastewater treating agent and preparing method thereof - Google Patents
Environment-friendly wastewater treating agent and preparing method thereof Download PDFInfo
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- CN105502566A CN105502566A CN201610055103.7A CN201610055103A CN105502566A CN 105502566 A CN105502566 A CN 105502566A CN 201610055103 A CN201610055103 A CN 201610055103A CN 105502566 A CN105502566 A CN 105502566A
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- 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
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5272—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using specific organic precipitants
-
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses an environment-friendly wastewater treating agent and a preparing method thereof. The environment-friendly wastewater treating agent is prepared from, by weight, 12-16 parts of bamboo vinegar, 16-18 parts of propylene amide, 20-24 parts of diethylenetriamine, 16-20 parts of sodium silicate, 16-18 parts of sodium lignin sulfonate, 10-12 parts of tannin, 12-18 parts of active carbon, 18-20 parts of potassium nitrite, 10-16 parts of polyaluminum chloride, 8-12 parts of ammonium persulfate, 12-18 parts of water glass, 16-22 parts of ferrous sulfate, 12-18 parts of sodium acetate, 10-12 parts of triethanolamine and 16-18 parts of zeolite. The environment-friendly wastewater treating agent is environmentally friendly, nontoxic, high in purifying speed and good in purifying effect.
Description
Technical field
The present invention relates to a kind of environment protection sewage treatment agent and preparation method thereof.
Background technology
Water technology has a very important role to water saving, the problem such as energy-conservation, but also affects to environment in the use procedure of sewage treatment drug simultaneously.In cooling water system, water temperature is higher than under the various occasions of envrionment temperature, and the fouling of the inorganic salt such as calcium carbonate can bring serious consequence.In recent years, in water treatment field, the water technology of using basic, non-adjust ph is growing, wherein adds corrosion-mitigation scale-inhibition medicament, the application of low-phosphorous, without phosphorus formula is more and more extensive, and without phosphorus Green Water treatment agent has become the hot subject of domestic and international water conditioner research aspect.Scientific utilization water treatment agent can effectively protection against corrosion and prevent fouling, thus the utilization ratio of raising equipment and water and reach the object of saving water source and the energy.
In addition, in various water system, inevitably there are various source of pollution, particularly some microorganisms are as bacterium algae, can spread by large-scale breeding, havoc water quality, and produce great corrosion failure effect to the container of storage of water system.
Current, environment protection has become the problem of World Focusing, and the emission request of industrial sewage is strict; country takes corresponding compulsory measure; seek a kind of effective sewage-treating agent, can reach sewage discharge requirement after can making sewage disposal, be numerous enterprises urgent need to solve the problem.
Summary of the invention
The technical problem to be solved in the present invention is to provide environment protection sewage treatment agent of the fast and good purification of a kind of environment-protecting asepsis, purification speed and preparation method thereof.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of environment protection sewage treatment agent and preparation method thereof, is made up of following raw material: bamboo vinegar liquid, the third polyene acid amides, diethylenetriamine, water glass, sodium lignosulfonate, tannin, gac, potassium nitrite, polymerize aluminum chloride, ammonium persulphate, water glass, ferrous sulfate, sodium-acetate, trolamine and zeolite; Described raw material is by following parts by weight proportioning composition: bamboo vinegar liquid 12 ?16 parts, the third polyene acid amides 16 ?18 parts, diethylenetriamine 20 ?24 parts, water glass 16 ?20 parts, sodium lignosulfonate 16 ?18 parts, tannin 10 ?12 parts, gac 12 ?18 parts, potassium nitrite 18 ?20 parts, polymerize aluminum chloride 10 ?16 parts, ammonium persulphate 8 ?12 parts, water glass 12 ?18 parts, ferrous sulfate 16 ?22 parts, sodium-acetate 12 ?18 parts, trolamine 10 ?12 parts and zeolite 16 ?18 parts.
Further, described raw material is by following parts by weight proportioning composition: bamboo vinegar liquid 12 parts, the third polyene acid amides 18 parts, diethylenetriamine 24 parts, water glass 20 parts, sodium lignosulfonate 18 parts, tannin 12 parts, gac 18 parts, potassium nitrite 20 parts, polymerize aluminum chloride 16 parts, ammonium persulphate 12 parts, water glass 18 parts, 22 parts, ferrous sulfate, sodium-acetate 18 parts, trolamine 12 parts and 18 parts, zeolite.
Further, described raw material is by following parts by weight proportioning composition: bamboo vinegar liquid 14 parts, the third polyene acid amides 17 parts, diethylenetriamine 22 parts, water glass 18 parts, sodium lignosulfonate 17 parts, tannin 11 parts, gac 15 parts, potassium nitrite 19 parts, polymerize aluminum chloride 13 parts, ammonium persulphate 10 parts, water glass 15 parts, 19 parts, ferrous sulfate, sodium-acetate 15 parts, trolamine 11 parts and 17 parts, zeolite.
Further, described raw material is by following parts by weight proportioning composition: bamboo vinegar liquid 16 parts, the third polyene acid amides 16 parts, diethylenetriamine 20 parts, water glass 16 parts, sodium lignosulfonate 16 parts, tannin 10 parts, gac 12 parts, potassium nitrite 18 parts, polymerize aluminum chloride 10 parts, ammonium persulphate 8 parts, water glass 12 parts, 16 parts, ferrous sulfate, sodium-acetate 12 parts, trolamine 10 parts and 16 parts, zeolite.
Another technical problem that the present invention will solve is to provide a kind of preparation method of environment protection sewage treatment agent, includes following steps:
1) get bamboo vinegar liquid 12 ?16 parts, the third polyene acid amides 16 ?18 parts, diethylenetriamine 20 ?24 parts, water glass 16 ?20 parts, sodium lignosulfonate 16 ?18 parts and tannin 10 ?12 parts, put into a container, with vibration of ultrasonic wave 10 ?15min, hyperacoustic vibration frequency is 1000w;
2) above-mentioned obtained material is put into well heater, temperature rise to 80 ?90 DEG C, heat 5 ?10min, for subsequent use;
3) get gac 12 ?18 parts, water glass 12 ?18 parts and zeolite 16 ?18 parts, put into micronizer mill, be ground into 100 ?140 object powders;
4) above-mentioned powder is put into a container, with 90 ?the heating temperatures 10min of 100 DEG C;
5) get potassium nitrite 18 ?20 parts, polymerize aluminum chloride 10 ?16 parts and ammonium persulphate 8 ?12 parts add step 4 to) in, often kind of material adds and is spaced apart 5min, and interpolation limit, limit is stirred, for subsequent use;
6) by step 2) and step 5) in obtained material put into stirrer, stir, leave standstill 10min;
7) get ferrous sulfate 16 ?22 parts, sodium-acetate 12 ?18 parts and trolamine 10 ?12 parts add step 6 to) in, stir, environment protection sewage treatment agent can be obtained.
Beneficial effect of the present invention is: this environment protection sewage treatment agent is originally under the effect of cooperatively interacting of each raw material, there is the advantage of the fast and good purification of environment-protecting asepsis, purification speed, can effectively the heavy metal ion in waste water and chemical toxicant effectively be adsorbed, be precipitated, stable chemical nature simultaneously, not easily decompose, scavenging process is corrosion-free to equipment; Using method is easy, without the need to increasing equipment and additional materials.
Embodiment
Embodiment 1:
A kind of environment protection sewage treatment agent, described raw material is by following parts by weight proportioning composition: bamboo vinegar liquid 12 parts, the third polyene acid amides 18 parts, diethylenetriamine 24 parts, water glass 20 parts, sodium lignosulfonate 18 parts, tannin 12 parts, gac 18 parts, potassium nitrite 20 parts, polymerize aluminum chloride 16 parts, ammonium persulphate 12 parts, water glass 18 parts, 22 parts, ferrous sulfate, sodium-acetate 18 parts, trolamine 12 parts and 18 parts, zeolite.
A preparation method for environment protection sewage treatment agent, includes following steps:
1) get bamboo vinegar liquid 12 parts, the third polyene acid amides 18 parts, diethylenetriamine 24 parts, water glass 20 parts, sodium lignosulfonate 18 parts and tannin 12 parts, put into a container, with vibration of ultrasonic wave 10 ?15min, hyperacoustic vibration frequency is 1000w;
2) above-mentioned obtained material is put into well heater, temperature rise to 80 ?90 DEG C, heat 5 ?10min, for subsequent use;
3) get gac 18 parts, water glass 18 parts and 18 parts, zeolite, put into micronizer mill, be ground into 100 ?140 object powders;
4) above-mentioned powder is put into a container, with 90 ?the heating temperatures 10min of 100 DEG C;
5) get potassium nitrite 20 parts, polymerize aluminum chloride 16 parts and ammonium persulphate 12 parts and add step 4 to) in, often kind of material interpolation is spaced apart 5min, and interpolation limit, limit is stirred, for subsequent use;
6) by step 2) and step 5) in obtained material put into stirrer, stir, leave standstill 10min;
7) get 22 parts, ferrous sulfate, sodium-acetate 18 parts and trolamine 12 parts and add step 6 to) in, stir, environment protection sewage treatment agent can be obtained.
Embodiment 2:
Described raw material is by following parts by weight proportioning composition: bamboo vinegar liquid 14 parts, the third polyene acid amides 17 parts, diethylenetriamine 22 parts, water glass 18 parts, sodium lignosulfonate 17 parts, tannin 11 parts, gac 15 parts, potassium nitrite 19 parts, polymerize aluminum chloride 13 parts, ammonium persulphate 10 parts, water glass 15 parts, 19 parts, ferrous sulfate, sodium-acetate 15 parts, trolamine 11 parts and 17 parts, zeolite.
A preparation method for environment protection sewage treatment agent, includes following steps:
1) get bamboo vinegar liquid 14 parts, the third polyene acid amides 17 parts, diethylenetriamine 22 parts, water glass 18 parts, sodium lignosulfonate 17 parts and tannin 11 parts, put into a container, with vibration of ultrasonic wave 10 ?15min, hyperacoustic vibration frequency is 1000w;
2) above-mentioned obtained material is put into well heater, temperature rise to 80 ?90 DEG C, heat 5 ?10min, for subsequent use;
3) get gac 15 parts, water glass 15 parts and 17 parts, zeolite, put into micronizer mill, be ground into 100 ?140 object powders;
4) above-mentioned powder is put into a container, with 90 ?the heating temperatures 10min of 100 DEG C;
5) get potassium nitrite 19 parts, polymerize aluminum chloride 13 parts and ammonium persulphate 10 parts and add step 4 to) in, often kind of material interpolation is spaced apart 5min, and interpolation limit, limit is stirred, for subsequent use;
6) by step 2) and step 5) in obtained material put into stirrer, stir, leave standstill 10min;
7) get 19 parts, ferrous sulfate, sodium-acetate 15 parts and trolamine 11 parts and add step 6 to) in, stir, environment protection sewage treatment agent can be obtained.
Embodiment 3:
A kind of environment protection sewage treatment agent, described raw material is by following parts by weight proportioning composition: bamboo vinegar liquid 16 parts, the third polyene acid amides 16 parts, diethylenetriamine 20 parts, water glass 16 parts, sodium lignosulfonate 16 parts, tannin 10 parts, gac 12 parts, potassium nitrite 18 parts, polymerize aluminum chloride 10 parts, ammonium persulphate 8 parts, water glass 12 parts, 16 parts, ferrous sulfate, sodium-acetate 12 parts, trolamine 10 parts and 16 parts, zeolite.
A preparation method for environment protection sewage treatment agent, includes following steps:
1) get bamboo vinegar liquid 16 parts, the third polyene acid amides 16 parts, diethylenetriamine 20 parts, water glass 16 parts, sodium lignosulfonate 16 parts and tannin 10 parts, put into a container, with vibration of ultrasonic wave 10 ?15min, hyperacoustic vibration frequency is 1000w;
2) above-mentioned obtained material is put into well heater, temperature rise to 80 ?90 DEG C, heat 5 ?10min, for subsequent use;
3) get gac 12 parts, water glass 12 parts and 16 parts, zeolite, put into micronizer mill, be ground into 100 ?140 object powders;
4) above-mentioned powder is put into a container, with 90 ?the heating temperatures 10min of 100 DEG C;
5) get potassium nitrite 18 parts, polymerize aluminum chloride 10 parts and ammonium persulphate 8 parts and add step 4 to) in, often kind of material interpolation is spaced apart 5min, and interpolation limit, limit is stirred, for subsequent use;
6) by step 2) and step 5) in obtained material put into stirrer, stir, leave standstill 10min;
7) get 16 parts, ferrous sulfate, sodium-acetate 12 parts and trolamine 10 parts and add step 6 to) in, stir, environment protection sewage treatment agent can be obtained.
Experimental example:
Experimental subjects: select environment protection sewage treatment agent of the present invention and two kinds of common sewage-treating agents, be divided into experimental group, control group 1 and control group 2 respectively.
Experimental technique: the industrial sewage the same to three groups of pollution levels respectively with the sewage-treating agent of each group processes.
Experimental result:
As can be seen here, the action effect of environment protection sewage treatment agent of the present invention to sewage is best, compared with common sewage-treating agent, has marked improvement.
Beneficial effect of the present invention is: this environment protection sewage treatment agent is originally under the effect of cooperatively interacting of each raw material, there is the advantage of the fast and good purification of environment-protecting asepsis, purification speed, can effectively the heavy metal ion in waste water and chemical toxicant effectively be adsorbed, be precipitated, stable chemical nature simultaneously, not easily decompose, scavenging process is corrosion-free to equipment; Using method is easy, without the need to increasing equipment and additional materials.
Typical case:
Lee has managed a factory in a region, the development trend of factory is very stable, but the industrial sewage of plant emissions is very serious to the pollution of environment, trees start to wither, Lee feels very annoyed to this, so Lee brings into use common sewage-treating agent to renovate neighbouring river, after half a year, the situation in river is not greatly improved, also create secondary pollution, but since Lee employs environment protection sewage treatment agent of the present invention, the water quality in river has improved, and neighbouring trees are also more and more vigorous.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, and any change of expecting without creative work or replacement, all should be encompassed in protection scope of the present invention.
Claims (5)
1. environment protection sewage treatment agent and preparation method thereof, is characterized in that: be made up of following raw material: bamboo vinegar liquid, the third polyene acid amides, diethylenetriamine, water glass, sodium lignosulfonate, tannin, gac, potassium nitrite, polymerize aluminum chloride, ammonium persulphate, water glass, ferrous sulfate, sodium-acetate, trolamine and zeolite; Described raw material is by following parts by weight proportioning composition: bamboo vinegar liquid 12 ?16 parts, the third polyene acid amides 16 ?18 parts, diethylenetriamine 20 ?24 parts, water glass 16 ?20 parts, sodium lignosulfonate 16 ?18 parts, tannin 10 ?12 parts, gac 12 ?18 parts, potassium nitrite 18 ?20 parts, polymerize aluminum chloride 10 ?16 parts, ammonium persulphate 8 ?12 parts, water glass 12 ?18 parts, ferrous sulfate 16 ?22 parts, sodium-acetate 12 ?18 parts, trolamine 10 ?12 parts and zeolite 16 ?18 parts.
2. environment protection sewage treatment agent as claimed in claim 2 and preparation method thereof, is characterized in that: described raw material forms by following parts by weight proportioning: bamboo vinegar liquid 12 parts, the third polyene acid amides 18 parts, diethylenetriamine 24 parts, water glass 20 parts, sodium lignosulfonate 18 parts, tannin 12 parts, gac 18 parts, potassium nitrite 20 parts, polymerize aluminum chloride 16 parts, ammonium persulphate 12 parts, water glass 18 parts, 22 parts, ferrous sulfate, sodium-acetate 18 parts, trolamine 12 parts and 18 parts, zeolite.
3. environment protection sewage treatment agent as claimed in claim 3 and preparation method thereof, is characterized in that: described raw material forms by following parts by weight proportioning: bamboo vinegar liquid 14 parts, the third polyene acid amides 17 parts, diethylenetriamine 22 parts, water glass 18 parts, sodium lignosulfonate 17 parts, tannin 11 parts, gac 15 parts, potassium nitrite 19 parts, polymerize aluminum chloride 13 parts, ammonium persulphate 10 parts, water glass 15 parts, 19 parts, ferrous sulfate, sodium-acetate 15 parts, trolamine 11 parts and 17 parts, zeolite.
4. environment protection sewage treatment agent as claimed in claim 4 and preparation method thereof, is characterized in that: described raw material forms by following parts by weight proportioning: bamboo vinegar liquid 16 parts, the third polyene acid amides 16 parts, diethylenetriamine 20 parts, water glass 16 parts, sodium lignosulfonate 16 parts, tannin 10 parts, gac 12 parts, potassium nitrite 18 parts, polymerize aluminum chloride 10 parts, ammonium persulphate 8 parts, water glass 12 parts, 16 parts, ferrous sulfate, sodium-acetate 12 parts, trolamine 10 parts and 16 parts, zeolite.
5. a preparation method for environment protection sewage treatment agent, is characterized in that: include following steps:
1) get bamboo vinegar liquid 12 ?16 parts, the third polyene acid amides 16 ?18 parts, diethylenetriamine 20 ?24 parts, water glass 16 ?20 parts, sodium lignosulfonate 16 ?18 parts and tannin 10 ?12 parts, put into a container, with vibration of ultrasonic wave 10 ?15min, hyperacoustic vibration frequency is 1000w;
2) above-mentioned obtained material is put into well heater, temperature rise to 80 ?90 DEG C, heat 5 ?10min, for subsequent use;
3) get gac 12 ?18 parts, water glass 12 ?18 parts and zeolite 16 ?18 parts, put into micronizer mill, be ground into 100 ?140 object powders;
4) above-mentioned powder is put into a container, with 90 ?the heating temperatures 10min of 100 DEG C;
5) get potassium nitrite 18 ?20 parts, polymerize aluminum chloride 10 ?16 parts and ammonium persulphate 8 ?12 parts add step 4 to) in, often kind of material adds and is spaced apart 5min, and interpolation limit, limit is stirred, for subsequent use;
6) by step 2) and step 5) in obtained material put into stirrer, stir, leave standstill 10min;
7) get ferrous sulfate 16 ?22 parts, sodium-acetate 12 ?18 parts and trolamine 10 ?12 parts add step 6 to) in, stir, environment protection sewage treatment agent can be obtained.
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106186230A (en) * | 2016-08-15 | 2016-12-07 | 桂林市福泰建材有限责任公司 | A kind of Industrial waste water treatment agent |
CN106219620A (en) * | 2016-07-29 | 2016-12-14 | 安徽天顺环保设备股份有限公司 | Particle that a kind of industrial waste water purifying processes and preparation method thereof |
CN106277088A (en) * | 2016-08-15 | 2017-01-04 | 桂林市福泰建材有限责任公司 | A kind for the treatment of agent for wastewater from paper mills |
CN107117663A (en) * | 2017-03-31 | 2017-09-01 | 长乐巧通工业设计有限公司 | A kind of environment-protecting industrial waste water treating agent and preparation method thereof |
CN107445271A (en) * | 2017-09-30 | 2017-12-08 | 武汉马腾科技发展有限公司 | A kind of inorganic agent for handling industrial wastewater and its preparation method and application |
CN110272111A (en) * | 2019-07-31 | 2019-09-24 | 郑州恒博环境科技股份有限公司 | A kind of oxidant and preparation method thereof removing high-salt wastewater COD organic matter |
CN111302412A (en) * | 2020-03-06 | 2020-06-19 | 昆山水经环境科技有限公司 | Environment-friendly harmless water treatment agent |
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CN101293689A (en) * | 2007-08-15 | 2008-10-29 | 王旗 | Water treatment medicament |
ES2354669A1 (en) * | 2010-11-29 | 2011-03-17 | Dps Valorización, S.L. | Process and reagent for the treatment of glycolated waters. (Machine-translation by Google Translate, not legally binding) |
CN104355373A (en) * | 2014-10-27 | 2015-02-18 | 无锡伊佩克科技有限公司 | Sewage purification disinfectant and preparation method thereof |
CN105016494A (en) * | 2015-07-30 | 2015-11-04 | 陈朝民 | Composite water treatment agent |
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Patent Citations (4)
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CN101293689A (en) * | 2007-08-15 | 2008-10-29 | 王旗 | Water treatment medicament |
ES2354669A1 (en) * | 2010-11-29 | 2011-03-17 | Dps Valorización, S.L. | Process and reagent for the treatment of glycolated waters. (Machine-translation by Google Translate, not legally binding) |
CN104355373A (en) * | 2014-10-27 | 2015-02-18 | 无锡伊佩克科技有限公司 | Sewage purification disinfectant and preparation method thereof |
CN105016494A (en) * | 2015-07-30 | 2015-11-04 | 陈朝民 | Composite water treatment agent |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106219620A (en) * | 2016-07-29 | 2016-12-14 | 安徽天顺环保设备股份有限公司 | Particle that a kind of industrial waste water purifying processes and preparation method thereof |
CN106186230A (en) * | 2016-08-15 | 2016-12-07 | 桂林市福泰建材有限责任公司 | A kind of Industrial waste water treatment agent |
CN106277088A (en) * | 2016-08-15 | 2017-01-04 | 桂林市福泰建材有限责任公司 | A kind for the treatment of agent for wastewater from paper mills |
CN107117663A (en) * | 2017-03-31 | 2017-09-01 | 长乐巧通工业设计有限公司 | A kind of environment-protecting industrial waste water treating agent and preparation method thereof |
CN107445271A (en) * | 2017-09-30 | 2017-12-08 | 武汉马腾科技发展有限公司 | A kind of inorganic agent for handling industrial wastewater and its preparation method and application |
CN110272111A (en) * | 2019-07-31 | 2019-09-24 | 郑州恒博环境科技股份有限公司 | A kind of oxidant and preparation method thereof removing high-salt wastewater COD organic matter |
CN111302412A (en) * | 2020-03-06 | 2020-06-19 | 昆山水经环境科技有限公司 | Environment-friendly harmless water treatment agent |
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Application publication date: 20160420 |