CN105293603A - Heavy metal wastewater treatment medicament and treatment method of heavy metal wastewater - Google Patents
Heavy metal wastewater treatment medicament and treatment method of heavy metal wastewater Download PDFInfo
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- CN105293603A CN105293603A CN201510853670.2A CN201510853670A CN105293603A CN 105293603 A CN105293603 A CN 105293603A CN 201510853670 A CN201510853670 A CN 201510853670A CN 105293603 A CN105293603 A CN 105293603A
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 60
- 239000002351 wastewater Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 17
- 238000004065 wastewater treatment Methods 0.000 title abstract 8
- 239000003814 drug Substances 0.000 title abstract 6
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 49
- 125000002091 cationic group Chemical group 0.000 claims abstract description 25
- 239000002738 chelating agent Substances 0.000 claims abstract description 25
- 125000000129 anionic group Chemical group 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims abstract description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 13
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 150000002500 ions Chemical class 0.000 claims description 23
- 239000002594 sorbent Substances 0.000 claims description 22
- 238000005189 flocculation Methods 0.000 claims description 20
- 230000016615 flocculation Effects 0.000 claims description 20
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical group [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 claims description 10
- NYVOYAFUSJONHU-UHFFFAOYSA-K trisodium;1,3,5-triazine-2,4,6-trithiolate Chemical group [Na+].[Na+].[Na+].[S-]C1=NC([S-])=NC([S-])=N1 NYVOYAFUSJONHU-UHFFFAOYSA-K 0.000 claims description 10
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- -1 iron ion Chemical class 0.000 claims description 8
- RVPVRDXYQKGNMQ-UHFFFAOYSA-N lead(2+) Chemical compound [Pb+2] RVPVRDXYQKGNMQ-UHFFFAOYSA-N 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- 238000013517 stratification Methods 0.000 claims description 5
- 238000000967 suction filtration Methods 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 abstract description 3
- 229910000278 bentonite Inorganic materials 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 3
- 239000002250 absorbent Substances 0.000 abstract 1
- 230000002745 absorbent Effects 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000008394 flocculating agent Substances 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000701 coagulant Substances 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 241000270666 Testudines Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010027439 Metal poisoning Diseases 0.000 description 1
- 208000030527 Minamata disease Diseases 0.000 description 1
- 208000009507 Nervous System Mercury Poisoning Diseases 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000010501 heavy metal poisoning Diseases 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention relates to a heavy metal wastewater treatment medicament. The heavy metal wastewater treatment medicament comprises the following raw materials by weight: 1 part of cationic polyacrylamide, 3 to 8 parts of anionic polyacrylamide, 10 to 30 parts of an inorganic flocculating agent, 1 to 3 parts of a heavy metal chelating agent, and 58 to 85 parts of an absorbent. The invention further provides a heavy metal wastewater treatment method which comprises the following steps: taking 1 L of chemical wastewater; adding a NaOH solution into the wastewater till the pH of the obtained solution is 8.0 to 9.0; adding the heavy metal wastewater treatment medicament into the obtained solution, wherein the addition volume of the heavy metal wastewater treatment medicament is 0.04 to 0.08 percent of the weight of the chemical wastewater; stirring fast for 10 seconds; stirring slowly for 20 minutes; stopping stirring; allowing the obtained liquid to stand still for 10 minutes for layering. The heavy metal wastewater treatment medicament and the heavy metal wastewater treatment method have the benefits that 1, the preparation is simple; 2, the molecular weight of cationic polyacrylamide is low, and positive charge groups of cationic polyacrylamide can adsorb negative charges of bentonite, so that a filtration aiding system of a tight structure is formed; 3, anionic polyacrylamide is high in molecular weight, so as to subside fast and generate thick floc.
Description
Technical field
The present invention relates to the technical field of sewage disposal, particularly relate to a kind of heavy metal-polluted water treatment agent and treatment process thereof.
Background technology
Along with developing rapidly of industrial or agricultural economy, the quantity discharged of waste water increases day by day, and the trade effluent in a large number containing heavy metal and city domestic sewage are discharged in environment, cause severe contamination to air, soil and water surrounding.Heavy metal wastewater thereby contains arsenic, mercury, the elements such as lead, copper, zinc, chromium, nickel, and most of heavy metal wastewater thereby derives from the departments such as plating, mining, chemical industry, and the kind of heavy metal ions in wastewater, content and existing forms are with different production kind, and widely different.There is because of heavy metal ion the features such as strong toxicity, persistence, non-biodegradable, so once heavy metal by the farm crop such as paddy, wheat or other biological absorb and eaten by the mankind, heavy metal will enter human body makes people produce heavy metal poisoning, light then the strange illness such as minamata disease, itai-itai disease occurs, severe one will be dead.
Although the method for process heavy metal wastewater thereby is varied, Physical, chemical method, physico-chemical processes, biological process and efficient Integration Method etc. substantially can be summarized as.Wherein most importantly chemical method.In view of heavy metal wastewater thereby concentration is low, complicated component, process requirement up to standard very strict, existing water treatment agent perhaps can process the heavy metal ion in trade effluent, but can not reach a good removing effect for the material in waste water except heavy metal ion.Also there is the problems such as expensive, poor processing effect, settling velocity are slow, using dosage is large, sticky filter cloth simultaneously.
Summary of the invention
Technical problem to be solved by this invention is: the defect overcoming prior art, provides a kind of high effect nontoxic, alumen ustum is large, the reaction times is short, settling velocity is fast, heavy metal-polluted water treatment agent that hydrophobicity is good and treatment process thereof.
The technical scheme that the problem that the present invention is the above-mentioned proposition of solution adopts is:
A kind of heavy metal-polluted water treatment agent, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 3-8 weight part; Inorganics flocculation agent 10-30 weight part; Heavy metal chelating agent 1-3 weight part; Sorbent material 58-85 weight part.
A kind of heavy metal-polluted water treatment agent, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 4-7 weight part; Inorganics flocculation agent 15-25 weight part; Heavy metal chelating agent 1-3 weight part; Sorbent material 68-78 weight part.
A kind of heavy metal-polluted water treatment agent, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 5-6 weight part; Inorganics flocculation agent 16-20 weight part; Heavy metal chelating agent 2-3 weight part; Sorbent material 60-70 weight part.
A kind of heavy metal-polluted water treatment agent, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 5 weight part; Inorganics flocculation agent 15 weight part; Heavy metal chelating agent 1 weight part; Sorbent material 78 weight part.
Described inorganics flocculation agent is aluminium iron polychloride.
Described heavy metal chelating agent is trithiocyanuric acid trisodium salt.
Described sorbent material is wilkinite.
A kind of heavy metal-polluted water treatment method, the method comprises the following steps:
(1) PH regulates: get wastewater from chemical industry 1L, in waste water, add NaOH solution, regulates wastewater pH to 8.0-9.0;
(2) mix: in step 1 gained solution, add heavy metal-polluted water treatment agent, the addition of heavy metal-polluted water treatment agent is the 0.04%-0.08% of wastewater from chemical industry weight, rapid stirring 10s, then low rate mixing 20min, stop stirring, stratification 10min, suction filtration removing gained precipitation, collects clear liquid.
Described heavy metal-polluted water treatment agent, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 3-8 weight part; Inorganics flocculation agent 10-30 weight part; Heavy metal chelating agent 1-3 weight part; Sorbent material 58-85 weight part.
Described heavy metal-polluted water treatment agent, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 4-7 weight part; Inorganics flocculation agent 15-25 weight part; Heavy metal chelating agent 1-3 weight part; Sorbent material 68-78 weight part.
Described heavy metal-polluted water treatment agent, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 5-6 weight part; Inorganics flocculation agent 16-20 weight part; Heavy metal chelating agent 2-3 weight part; Sorbent material 60-70 weight part.
Described heavy metal-polluted water treatment agent, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 5 weight part; Inorganics flocculation agent 15 weight part; Heavy metal chelating agent 1 weight part; Sorbent material 78 weight part.
Described inorganics flocculation agent is aluminium iron polychloride.
Described heavy metal chelating agent is trithiocyanuric acid trisodium salt.
Described sorbent material is wilkinite.
Wastewater from chemical industry used contains cupric ion 105mg/L, zine ion 10mg/L, lead ion 3.5mg/L, and iron ion is 95mg/L.
Principle of work of the present invention: ultimate principle take aluminium iron polychloride as flocculation agent, anionic polyacrylamide, cationic polyacrylamide are coagulant aids, trithiocyanuric acid trisodium salt is heavy metals removal agent, by the drainage system that cationic polyacrylamide and bentonite adsorption link are formed, the floc sedimentation that colloid, suspended substance, heavy metal ion etc. are formed filters and removes.
Beneficial effect of the present invention is: 1, preparation is simple, only polyacrylamide, aluminium iron polychloride, heavy metal chelating agent and wilkinite need be mixed in proportion, mix.2, cationic polyacrylamide molecular weight is little, not only as coagulant aids, colloid rapid flocculation can be made, but also adsorb bentonitic negative charge by the positive charge group contained by it, form hard-packed drainage system, both be conducive to the sedimentation of macromolecular substance, the hydrophobicity of settled sludge can have been improved again, made filter cake not easily sticky filter cloth.3, trithiocyanuric acid trisodium salt is as the collecting agent of heavy metal ion, and heavy metal ion is all fixed firmly in polymer.4, anionic polyacrylamide molecular weight is large, and effect caught by performance absorption, crane span structure, net, and the heavy metal huge legendary turtle separated out is closed salt and is linked to be one piece, rapid sedimentation, flco is thick.5, can not only heavy-metal ion removal effectively, can also reduce or remove other objectionable impuritiess.
Embodiment
Further illustrate embodiments of the invention below.
Embodiment 1: get wastewater from chemical industry 1L, NaOH solution is added in waste water, regulate wastewater pH to 8.0-9.0, then add heavy metal-polluted water treatment agent, the addition of heavy metal-polluted water treatment agent is 0.04% of wastewater from chemical industry weight, rapid stirring 10s, then low rate mixing 20min, stops stirring, stratification 10min, suction filtration removing gained precipitation, collects clear liquid.
The concentration of heavy metal ion processing rear waste water is: cupric ion 0.48mg/L, zine ion 0.89mg/L, lead ion 0.29mg/L, and iron ion is that 0.25mg/L reaches emission request.
Wastewater from chemical industry used contains cupric ion 105mg/L, zine ion 10mg/L, lead ion 3.5mg/L, and iron ion is 95mg/L.
Described heavy metal-polluted water treatment agent, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part, anionic polyacrylamide 5 weight part, aluminium iron polychloride 15 weight part, heavy metal chelating agent 1 weight part, sorbent material 78 weight part.
Described heavy metal chelating agent is trithiocyanuric acid trisodium salt.
Described sorbent material is wilkinite.
Embodiment 2: get wastewater from chemical industry 1L, first wastewater pH is regulated to be 8.0-9.0 with NaOH, then add heavy metal-polluted water treatment agent, the addition of heavy metal-polluted water treatment agent is 0.06% of wastewater from chemical industry weight, rapid stirring 10s, then low rate mixing 20min, stops stirring, stratification 10min, suction filtration removing gained precipitation, collects clear liquid.
The concentration of heavy metal ion processing rear waste water is: cupric ion 0.40mg/L, zine ion 0.80mg/L, lead ion 0.23mg/L, and iron ion is 0.18mg/L, reaches emission request.
Wastewater from chemical industry used contains cupric ion 105mg/L, zine ion 10mg/L, lead ion 3.5mg/L, and iron ion is 95mg/L.
Described heavy metal-polluted water treatment agent, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part, anionic polyacrylamide 5 weight part, aluminium iron polychloride 15 weight part, heavy metal chelating agent 1 weight part, sorbent material 78 weight part.
Described heavy metal chelating agent is trithiocyanuric acid trisodium salt.
Described sorbent material is wilkinite.
Embodiment 3: get wastewater from chemical industry 1L, first wastewater pH is regulated to be 8.0-9.0 with NaOH, then heavy metal-polluted water treatment agent is added, the addition of heavy metal-polluted water treatment agent is 0.08% of wastewater from chemical industry weight, rapid stirring 10s, then low rate mixing 20min, stop stirring, stratification 10min, suction filtration removing gained precipitation, collects clear liquid.
The concentration of heavy metal ion processing rear waste water is: cupric ion is 0.28mg/L, and zine ion is 0.69mg/L, and lead ion is 0.20mg/L, and iron ion is 0.14mg/L, reaches emission request.
Wastewater from chemical industry used contains cupric ion 105mg/L, zine ion 10mg/L, lead ion 3.5mg/L, and iron ion is 95mg/L.
Described heavy metal-polluted water treatment agent, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part, anionic polyacrylamide 5 weight part, aluminium iron polychloride 15 weight part, heavy metal chelating agent 1 weight part, sorbent material 78 weight part.
Described heavy metal chelating agent is trithiocyanuric acid trisodium salt.
Described sorbent material is wilkinite.
The principle of work of this embodiment: ultimate principle take aluminium iron polychloride as flocculation agent, anionic polyacrylamide, cationic polyacrylamide are coagulant aids, trithiocyanuric acid trisodium salt is heavy metals removal agent, by the drainage system that cationic polyacrylamide and bentonite adsorption link are formed, the floc sedimentation that colloid, suspended substance, heavy metal ion etc. are formed filters and removes.
The beneficial effect of this embodiment is: 1, preparation is simple, only polyacrylamide, aluminium iron polychloride, heavy metal chelating agent and wilkinite need be mixed in proportion, mix.2, cationic polyacrylamide molecular weight is little, not only as coagulant aids, colloid rapid flocculation can be made, but also adsorb bentonitic negative charge by the positive charge group contained by it, form hard-packed drainage system, both be conducive to the sedimentation of macromolecular substance, the hydrophobicity of settled sludge can have been improved again, made filter cake not easily sticky filter cloth.3, trithiocyanuric acid trisodium salt is as the collecting agent of heavy metal ion, and heavy metal ion is all fixed firmly in polymer.4, anionic polyacrylamide molecular weight is large, and effect caught by performance absorption, crane span structure, net, and the heavy metal huge legendary turtle separated out is closed salt and is linked to be one piece, rapid sedimentation, flco is thick.5, can not only heavy-metal ion removal effectively, can also reduce or remove other objectionable impuritiess.
Specific embodiments of the invention are not construed as limiting the invention, and every employing analog structure of the present invention and change, all in protection scope of the present invention.
Claims (10)
1. a heavy metal-polluted water treatment agent, is characterized in that, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 3-8 weight part; Inorganics flocculation agent 10-30 weight part; Heavy metal chelating agent 1-3 weight part; Sorbent material 58-85 weight part.
2. a kind of heavy metal-polluted water treatment agent as claimed in claim 1, it is characterized in that, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 4-7 weight part; Inorganics flocculation agent 15-25 weight part; Heavy metal chelating agent 1-3 weight part; Sorbent material 68-78 weight part.
3. a kind of heavy metal-polluted water treatment agent as claimed in claim 1, it is characterized in that, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 5-6 weight part; Inorganics flocculation agent 16-20 weight part; Heavy metal chelating agent 2-3 weight part; Sorbent material 60-70 weight part.
4. a kind of heavy metal-polluted water treatment agent as claimed in claim 1, it is characterized in that, it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 5 weight part; Inorganics flocculation agent 15 weight part; Heavy metal chelating agent 1 weight part; Sorbent material 78 weight part.
5. the heavy metal-polluted water treatment agent of the one as described in any one of claim 1-4, is characterized in that: described inorganics flocculation agent is aluminium iron polychloride.
6. the heavy metal-polluted water treatment agent of the one as described in any one of claim 1-4, is characterized in that: described heavy metal chelating agent is trithiocyanuric acid trisodium salt.
7. the heavy metal-polluted water treatment agent of the one as described in any one of claim 1-4, is characterized in that: described sorbent material is wilkinite.
8. a heavy metal-polluted water treatment method, is characterized in that, the method comprises the following steps:
(1) PH regulates: get wastewater from chemical industry 1L, in waste water, add NaOH solution, regulates wastewater pH to 8.0-9.0;
(2) mix: in step 1 gained solution, add heavy metal-polluted water treatment agent, the addition of heavy metal-polluted water treatment agent is the 0.04%-0.08% of wastewater from chemical industry weight, rapid stirring 10s, then low rate mixing 20min, stop stirring, stratification 10min, suction filtration removing gained precipitation, collects clear liquid.
9. a kind of heavy metal-polluted water treatment method as claimed in claim 8, it is characterized in that, described heavy metal-polluted water treatment agent, it comprises the raw material of following weight part: described heavy metal-polluted water treatment agent, and it comprises the raw material of following weight part: cationic polyacrylamide 1 weight part; Anionic polyacrylamide 5 weight part; Inorganics flocculation agent 15 weight part; Heavy metal chelating agent 1 weight part; Sorbent material 78 weight part.
10. a kind of heavy metal-polluted water treatment method as claimed in claim 8, is characterized in that: wastewater from chemical industry used contains cupric ion 105mg/L, zine ion 10mg/L, lead ion 3.5mg/L, and iron ion is 95mg/L.
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| CN105753277A (en) * | 2016-03-31 | 2016-07-13 | 魏垒垒 | Method for utilizing anionic polyacrylamide to reduce toxicity of heavy metals to activated sludge |
| CN106430484A (en) * | 2016-10-13 | 2017-02-22 | 无锡普立顺环保科技有限公司 | Efficient heavy metal trapping agent |
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| CN107128982A (en) * | 2017-05-14 | 2017-09-05 | 安徽泛亚环保科技有限公司 | A kind of commercial metal effluent purifying medicament and its production method |
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Inventor after: Tian Peilin Inventor after: Tian Minge Inventor after: Ge Yonghui Inventor after: Yang Qingjun Inventor after: Wang Liucun Inventor after: Shi Hailing Inventor after: Yin Shumei Inventor before: Tian Minge Inventor before: Shi Hailing Inventor before: Gu Jiyong Inventor before: Yin Shumei |
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Application publication date: 20160203 Assignee: Zibo High tech Zone Xingrui Qingke Environmental Technology Research Institute Assignor: SCIENGREEN (SHANDONG) ENVIRONMENT TECHNOLOGY CO.,LTD. Contract record no.: X2023980047555 Denomination of invention: A heavy metal wastewater treatment agent and its treatment method Granted publication date: 20180403 License type: Common License Record date: 20231204 |