CN105645645A - Cyclic treatment method of acidic sewage containing rich heavy metals arsenic and lead - Google Patents
Cyclic treatment method of acidic sewage containing rich heavy metals arsenic and lead Download PDFInfo
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- CN105645645A CN105645645A CN201610012986.3A CN201610012986A CN105645645A CN 105645645 A CN105645645 A CN 105645645A CN 201610012986 A CN201610012986 A CN 201610012986A CN 105645645 A CN105645645 A CN 105645645A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/465—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electroflotation
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
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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
- C02F1/52—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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- 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
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
Abstract
The invention discloses a cyclic treatment method of acidic sewage containing rich heavy metals arsenic and lead. The method comprises the following steps: acidic sewage is sent into a pretreatment reaction tank and neutralized with 8-12% lime milk, the treated solution is sent into a concentrator, precipitated sludge is subjected to pressure filtration treatment for cyclic utilization, and the clear solution is sent into a secondary neutralization tank and reacts with a flocculant and an alkali metal hydroxide neutralization agent; the generated sludge is subjected to pressure filtration treatment for cyclic utilization, the clear solution is sent into a primary neutralization tank and mixed with a filter press filtrate, and the reacted treated solution is sent into an electrochemical integrated advanced treatment integration device and subjected to electrochemical treatment to form a floc; the clear solution is subjected to aeration treatment and reacts with a coagulant aid to form a large floc; and the treated solution is sent into a sloping plate region to be separated, the standard clear solution overflows to the clear water tank for cyclic utilization, and the sludge is sent into the secondary neutralization tank for cyclic treatment. The cyclic treatment method can implement multistage cyclic utilization on heavy-metal-containing acidic sewage, and is beneficial to the environmental protection, energy saving and consumption reduction of the enterprise.
Description
Technical field
The invention belongs to containing heavy metal sour water processing technology field, be specifically related to a kind of circulation process method rich in arsenic, the sour water of plumbous heavy metal.
Background technology
If commercial production is just discharged rich in the sour water of heavy metal is not treated, not only the health of operator is had a strong impact on, etching apparatus pipeline, cause safety in production hidden danger, also factory's surrounding can be produced serious pollution. Therefore, research and develop the processing method of the sour water rich in heavy metal of a kind of clean and effective, the clear liquid after processing is carried out multiple stage circulation recycling, being smoothed out for enterprise safety operation, save production cost, improve production environment and be all of great practical significance.
Summary of the invention
It is an object of the invention to provide a kind of circulation process method rich in arsenic, the sour water of plumbous heavy metal.
The object of the present invention is achieved like this: the described circulation process method rich in arsenic, the sour water of plumbous heavy metal includes neutralization, flocculation, mixing, electrochemical treatments, helps solidifying and separation circuit, specifically includes:
A, neutralization: pending sour water is conveyed into pretreatment reaction groove, be neutralized reaction with the lime cream of concentration 8��12%, and the dosage of lime cream is; 1.25m3/h
B, separation: the treatment fluid in pretreatment reaction groove is conveyed into concentrator and precipitates, the mud of precipitation is conveyed into pressure filter and processes in order to recycling through filter pressing, and clear liquid is conveyed into two grades and neutralizes reactive tank;
C, flocculation: in two grades and add in flocculant and alkali metal hydroxide and medicament in reactive tank, flocculant and in alkali metal hydroxide and the dosage of medicament respectively 1��2% and 0.3m3/ h; Two grades of mud neutralized in reactive tank are conveyed into pressure filter and process in order to recycling through filter pressing, and clear liquid is conveyed in one-level and reactive tank;
D, mixing: entering the clear liquid in one-level and in reactive tank and carry out hybrid reaction from the filter liquor in pressure filter, reacted treatment fluid is conveyed into electrochemistry integrated advanced treating integrating device;
E, electrochemical treatments: the treatment fluid entering electrochemistry integrated advanced treating integrating device reacts through electrolytic flocculation, electrofloatation and electrolysis oxidation-reduction, form flocculation group, and clear liquid overflow enters to combine pond; The technological parameter of electrochemical treatments is as follows: when controlling current stabilization operation, when feed liquor flow is 25m3During/h, the electric current of electrochemical reactor is 500��1000A;
F, help solidifying: entering the clear liquid in combination pond through Air Exposure, and react with the flocculation aid adding combination pond, form group of flocculating greatly, the dosage of flocculation aid is 0.15m3/ h;
G, separation: the treatment fluid in combination pond is conveyed into swash plate district and is easily separated, clear liquid up to standard overflows to clear water reserviors in order to recycling, and mud is again conveyed into two grades of neutralization reactive tanks and is circulated process after merging into mud ditch.
Circulation process method of the present invention is adopted to be capable of using rich in the multiple stage circulation of arsenic, the sour water of plumbous heavy metal; the mud of deposition can carry out comprehensively utilizing or harmless treatment further; react thorough noresidue; avoiding the generation of secondary pollution, treatment effeciency is high, it is achieved that cleaning produces; save a large amount of production cost; reduce safety and environmental protection risk, be conducive to environmental conservation and energy-saving and cost-reducing, promoted the raising of Business Economic Benefit and the improvement of environmental benefit.
Detailed description of the invention
The present invention is further illustrated below, but never in any form the present invention is any limitation as, and based on present invention teach that any conversion or replacement made, belongs to protection scope of the present invention.
Circulation process method rich in arsenic, the sour water of plumbous heavy metal of the present invention includes neutralization, flocculation, mixing, electrochemical treatments, helps solidifying and separation circuit, specifically includes:
Described neutralization step refers to: pending sour water is conveyed into pretreatment reaction groove, is neutralized reaction with the lime cream of concentration 8��12%, and the dosage of lime cream is 1.25m3/ h;
Described separation circuit refers to: the treatment fluid in pretreatment reaction groove is conveyed into concentrator and precipitates, and the mud of precipitation is conveyed into pressure filter and processes in order to recycling through filter pressing, and clear liquid is conveyed into two grades and neutralizes reactive tank;
Described flocculation operation refers to: in two grades and add in flocculant and alkali metal hydroxide and medicament in reactive tank, flocculant and in alkali metal hydroxide and dosage respectively 1��2% He of medicament; 0.3m3/ h bis-grades neutralizes the mud in reactive tank and is conveyed into pressure filter through filter pressing process in order to recycling, and clear liquid is conveyed in one-level and reactive tank;
Described mixed processes refers to: entering the clear liquid in one-level and in reactive tank and carry out hybrid reaction from the filter liquor in pressure filter, reacted treatment fluid is conveyed into electrochemistry integrated advanced treating integrating device;
Described electrochemical treatments operation refers to: the treatment fluid entering electrochemistry integrated advanced treating integrating device reacts through electrolytic flocculation, electrofloatation and electrolysis oxidation-reduction, forms flocculation group, and clear liquid overflow enters to combine pond; The technological parameter of electrochemical treatments is as follows: when controlling current stabilization operation, when feed liquor flow is 25m3During/h, the electric current of electrochemical reactor is 500��1000A;
Described solidifying operation is helped to refer to: entering the clear liquid in combination pond through Air Exposure, and react with the flocculation aid adding combination pond, form group of flocculating greatly, the dosage of flocculation aid is 0.15m3/ h;
Described separation circuit refers to: the treatment fluid in combination pond is conveyed into swash plate district and is easily separated, and clear liquid up to standard overflows to clear water reserviors in order to recycling, and mud is again conveyed into two grades of neutralization reactive tanks and is circulated process after merging into mud ditch.
The concentration of lime cream described in neutralization step is 10%.
Neutralizing reaction described in neutralization step to carry out when stirring, the speed of stirring is 41.1r/min.
The time neutralizing reaction described in neutralization step needs > 1h.
The pH value neutralizing post-reaction treatment liquid described in neutralization step is 7��9.
The time of precipitation described in separation circuit needs > 30min.
Flocculant described in flocculation operation is PAM, and described neutralization medicament is any one in potassium hydroxide or sodium hydroxide.
Flocculation treatment described in flocculation operation need to carry out when stirring, and the speed of stirring is 84.7r/min.
After flocculation treatment described in flocculation operation, the pH value of clear liquid is 8��9.
Described in mixed processes and electrochemical treatments operation, the pH value for the treatment of fluid is 8��9.
Helping aeration described in solidifying operation to use air compressor machine to process, the operating pressure of air compressor machine is 0.7��0.9MPa.
Helping flocculation aid described in solidifying operation is PAM.
Embodiment 1
Pending sour water being conveyed into pretreatment reaction groove, is neutralized reaction with the lime cream of concentration 10%, the dosage of lime cream is 1.25m3/ h. Liquid level once pretreatment reaction groove rises to stirring paddle 1/2 and namely starts stirring paddle, and the speed of stirring is 41.1r/min. After neutralizing reaction 62min, it is 7.4 with the pH value of acidometer measurement processing liquid, treatment fluid in pretreatment reaction groove is conveyed into concentrator precipitate, the treatment fluid sedimentation time in concentrator is 35min, the mud of precipitation is conveyed into pressure filter and processes in order to recycling through filter pressing, and clear liquid is conveyed into two grades and neutralizes reactive tank. The dosage of PAM flocculant and sodium hydroxide, flocculant and sodium hydroxide respectively 2% and 0.3m is added in two grades and in reactive tank3/ h. Neutralizing the liquid level of dirt in reactive tank until two grades and start stirring paddle when rising to stirring paddle 1/2, the speed of stirring is 84.7r/min. Two grades of mud neutralized in reactive tanks are conveyed into pressure filter and process in order to recycling through filter pressing, after flocculation treatment pH value be 8.7 clear liquid be conveyed in one-level and reactive tank. Enter clear liquid in one-level and in reactive tank and carry out hybrid reaction from the filter liquor in pressure filter, after reaction pH value be 8.5 treatment fluid be conveyed into electrochemistry integrated advanced treating integrating device. The treatment fluid entering electrochemistry integrated advanced treating integrating device reacts through electrolytic flocculation, electrofloatation and electrolysis oxidation-reduction, forms flocculation group, and clear liquid overflow enters to combine pond. The technological parameter of electrochemical treatments is as follows: when controlling current stabilization operation, when the liquid level in electrochemical reactor is flooded more than battery lead plate 2/3 height, start electrolysis bath, when feed liquor flow is 25m3During/h, the electric current of electrochemical reactor is 500��750A. The clear liquid entering combination pond carries out Air Exposure through air compressor machine, and the operating pressure of air compressor machine is 0.9MPa, and reacts with the PAM flocculation aid adding combination pond, forms group of flocculating greatly, and the dosage of flocculation aid is 0.15m3/ h. Treatment fluid in combination pond is conveyed into swash plate district and is easily separated, and clear liquid up to standard overflows to clear water reserviors in order to recycling, and mud is again conveyed into two grades of neutralization reactive tanks and is circulated process after merging into mud ditch.
Embodiment 2
Pending sour water being conveyed into pretreatment reaction groove, is neutralized reaction with the lime cream of concentration 8%, the dosage of lime cream is 1.25m3/ h.Liquid level once pretreatment reaction groove rises to stirring paddle 1/2 and namely starts stirring paddle, and the speed of stirring is 41.1r/min. After neutralizing reaction 64min, it is 8.6 with the pH value of acidometer measurement processing liquid, treatment fluid in pretreatment reaction groove is conveyed into concentrator precipitate, the treatment fluid sedimentation time in concentrator is 32min, the mud of precipitation is conveyed into pressure filter and processes in order to recycling through filter pressing, and clear liquid is conveyed into two grades and neutralizes reactive tank. The dosage of PAM flocculant and sodium hydroxide, flocculant and sodium hydroxide respectively 1.5% and 0.3m is added in two grades and in reactive tank3/ h. Neutralizing the liquid level of dirt in reactive tank until two grades and start stirring paddle when rising to stirring paddle 1/2, the speed of stirring is 84.7r/min. Two grades of mud neutralized in reactive tanks are conveyed into pressure filter and process in order to recycling through filter pressing, after flocculation treatment pH value be 8.1 clear liquid be conveyed in one-level and reactive tank. Enter clear liquid in one-level and in reactive tank and carry out hybrid reaction from the filter liquor in pressure filter, after reaction pH value be 9.0 treatment fluid be conveyed into electrochemistry integrated advanced treating integrating device. The treatment fluid entering electrochemistry integrated advanced treating integrating device reacts through electrolytic flocculation, electrofloatation and electrolysis oxidation-reduction, forms flocculation group, and clear liquid overflow enters to combine pond. The technological parameter of electrochemical treatments is as follows: when controlling current stabilization operation, when the liquid level in electrochemical reactor is flooded more than battery lead plate 2/3 height, start electrolysis bath, when feed liquor flow is 25m3During/h, the electric current of electrochemical reactor is 600��1000A. The clear liquid entering combination pond carries out Air Exposure through air compressor machine, and the operating pressure of air compressor machine is 0.7MPa, and reacts with the PAM flocculation aid adding combination pond, forms group of flocculating greatly, and the dosage of flocculation aid is 0.15m3/ h. Treatment fluid in combination pond is conveyed into swash plate district and is easily separated, and clear liquid up to standard overflows to clear water reserviors in order to recycling, and mud is again conveyed into two grades of neutralization reactive tanks and is circulated process after merging into mud ditch.
Embodiment 3
Pending sour water being conveyed into pretreatment reaction groove, is neutralized reaction with the lime cream of concentration 12%, the dosage of lime cream is 1.25m3/ h. Liquid level once pretreatment reaction groove rises to stirring paddle 1/2 and namely starts stirring paddle, and the speed of stirring is 41.1r/min. After neutralizing reaction 67min, it is 8.8 with the pH value of acidometer measurement processing liquid, treatment fluid in pretreatment reaction groove is conveyed into concentrator precipitate, the treatment fluid sedimentation time in concentrator is 36min, the mud of precipitation is conveyed into pressure filter and processes in order to recycling through filter pressing, and clear liquid is conveyed into two grades and neutralizes reactive tank. The dosage of PAM flocculant and potassium hydroxide, flocculant and potassium hydroxide respectively 1% and 0.3m is added in two grades and in reactive tank3/ h. Neutralizing the liquid level of dirt in reactive tank until two grades and start stirring paddle when rising to stirring paddle 1/2, the speed of stirring is 84.7r/min. Two grades of mud neutralized in reactive tanks are conveyed into pressure filter and process in order to recycling through filter pressing, after flocculation treatment pH value be 8.4 clear liquid be conveyed in one-level and reactive tank. Enter clear liquid in one-level and in reactive tank and carry out hybrid reaction from the filter liquor in pressure filter, after reaction pH value be 8.2 treatment fluid be conveyed into electrochemistry integrated advanced treating integrating device. The treatment fluid entering electrochemistry integrated advanced treating integrating device reacts through electrolytic flocculation, electrofloatation and electrolysis oxidation-reduction, forms flocculation group, and clear liquid overflow enters to combine pond. The technological parameter of electrochemical treatments is as follows: when controlling current stabilization operation, when the liquid level in electrochemical reactor is flooded more than battery lead plate 2/3 height, start electrolysis bath, when feed liquor flow is 25m3During/h, the electric current of electrochemical reactor is 700��900A.The clear liquid entering combination pond carries out Air Exposure through air compressor machine, and the operating pressure of air compressor machine is 0.8MPa, and reacts with the PAM flocculation aid adding combination pond, forms group of flocculating greatly, and the dosage of flocculation aid is 0.15m3/ h. Treatment fluid in combination pond is conveyed into swash plate district and is easily separated, and clear liquid up to standard overflows to clear water reserviors in order to recycling, and mud is again conveyed into two grades of neutralization reactive tanks and is circulated process after merging into mud ditch.
The water quality index rich in arsenic, the sour water of plumbous heavy metal before and after circulation process method of the present invention processes is as shown in the table:
(1), influent quality
(2), effluent quality
Equipment used in above-described embodiment is as shown in the table:
Claims (10)
1. the circulation process method rich in arsenic, the sour water of plumbous heavy metal, it is characterised in that include neutralization, flocculation, mixing, electrochemical treatments, help solidifying and separation circuit, specifically include:
A, neutralization: pending sour water is conveyed into pretreatment reaction groove, be neutralized reaction with the lime cream of concentration 8 ~ 12%, and the dosage of lime cream is 1.25m3/ h;
B, separation: the treatment fluid in pretreatment reaction groove is conveyed into concentrator and precipitates, the mud of precipitation is conveyed into pressure filter and processes in order to recycling through filter pressing, and clear liquid is conveyed into two grades and neutralizes reactive tank;
C, flocculation: in two grades and add in flocculant and alkali metal hydroxide and medicament in reactive tank, flocculant and in alkali metal hydroxide and the dosage of medicament respectively 1 ~ 2% and 0.3m3/h; Two grades of mud neutralized in reactive tank are conveyed into pressure filter and process in order to recycling through filter pressing, and clear liquid is conveyed in one-level and reactive tank;
D, mixing: entering the clear liquid in one-level and in reactive tank and carry out hybrid reaction from the filter liquor in pressure filter, reacted treatment fluid is conveyed into electrochemistry integrated advanced treating integrating device;
E, electrochemical treatments: the treatment fluid entering electrochemistry integrated advanced treating integrating device reacts through electrolytic flocculation, electrofloatation and electrolysis oxidation-reduction, form flocculation group, and clear liquid overflow enters to combine pond; The technological parameter of electrochemical treatments is as follows: when controlling current stabilization operation, when feed liquor flow is 25m3During/h, the electric current of electrochemical reactor is 500 ~ 1000A;
F, help solidifying: entering the clear liquid in combination pond through Air Exposure, and react with the flocculation aid adding combination pond, form group of flocculating greatly, the dosage of flocculation aid is 0.15m3/h;
G, separation: the treatment fluid in combination pond is conveyed into swash plate district and is easily separated, clear liquid up to standard overflows to clear water reserviors in order to recycling, and mud is again conveyed into two grades of neutralization reactive tanks and is circulated process after merging into mud ditch.
2. circulation process method according to claim 1, it is characterised in that the concentration of lime cream described in operation A is 10%.
3. circulation process method according to claim 1, it is characterised in that neutralizing reaction described in operation A need to carry out when stirring, and the speed of stirring is 41.1r/min.
4. circulation process method according to claim 1, it is characterised in that the pH value neutralizing post-reaction treatment liquid described in operation A is 7 ~ 9.
5. circulation process method according to claim 1, it is characterised in that flocculant described in operation C is PAM, described neutralization medicament is any one in potassium hydroxide or sodium hydroxide.
6. circulation process method according to claim 1, it is characterised in that flocculation treatment described in operation C need to carry out when stirring, and the speed of stirring is 84.7r/min.
7. circulation process method according to claim 1, it is characterised in that after flocculation treatment described in operation C, the pH value of clear liquid is 8 ~ 9.
8. circulation process method according to claim 1, it is characterised in that the pH value of step D and treatment fluid described in operation E is 8 ~ 9.
9. circulation process method according to claim 1, it is characterised in that aeration described in operation F uses air compressor machine to process, and the operating pressure of air compressor machine is 0.7 ~ 0.9MPa.
10. circulation process method according to claim 1, it is characterised in that flocculation aid described in operation F is PAM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610012986.3A CN105645645A (en) | 2016-01-09 | 2016-01-09 | Cyclic treatment method of acidic sewage containing rich heavy metals arsenic and lead |
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| CN201610012986.3A CN105645645A (en) | 2016-01-09 | 2016-01-09 | Cyclic treatment method of acidic sewage containing rich heavy metals arsenic and lead |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106348541A (en) * | 2016-11-02 | 2017-01-25 | 金福兴 | Purifying treatment method of heavy-metal-containing acidic sewage |
| CN107487910A (en) * | 2017-09-30 | 2017-12-19 | 云南驰宏锌锗股份有限公司 | A kind of lead-zinc smelting industrial wastewater group technology processing method |
| CN108623053A (en) * | 2018-04-17 | 2018-10-09 | 武汉飞博乐环保工程有限公司 | One kind processing method of acid water containing arsenic and its processing system |
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| CN102295372A (en) * | 2011-05-18 | 2011-12-28 | 山东恒邦冶炼股份有限公司 | Method for treating acidic smelting waste water containing high arsenic and heavy metal ions |
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| CA2089348A1 (en) * | 1992-05-12 | 1993-11-13 | Michael D. Brewster | Method for arsenic removal from wastewater |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106348541A (en) * | 2016-11-02 | 2017-01-25 | 金福兴 | Purifying treatment method of heavy-metal-containing acidic sewage |
| CN107487910A (en) * | 2017-09-30 | 2017-12-19 | 云南驰宏锌锗股份有限公司 | A kind of lead-zinc smelting industrial wastewater group technology processing method |
| CN107487910B (en) * | 2017-09-30 | 2020-06-23 | 云南驰宏锌锗股份有限公司 | Combined process treatment method for lead-zinc smelting industrial wastewater |
| CN108623053A (en) * | 2018-04-17 | 2018-10-09 | 武汉飞博乐环保工程有限公司 | One kind processing method of acid water containing arsenic and its processing system |
| CN108623053B (en) * | 2018-04-17 | 2020-10-20 | 武汉飞博乐环保工程有限公司 | Arsenic-containing waste acid wastewater treatment method and treatment system thereof |
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Application publication date: 20160608 |
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