CN107986494A - A kind of method for removing lead ion in lead zinc beneficiation wastewater - Google Patents

A kind of method for removing lead ion in lead zinc beneficiation wastewater Download PDF

Info

Publication number
CN107986494A
CN107986494A CN201711266025.6A CN201711266025A CN107986494A CN 107986494 A CN107986494 A CN 107986494A CN 201711266025 A CN201711266025 A CN 201711266025A CN 107986494 A CN107986494 A CN 107986494A
Authority
CN
China
Prior art keywords
lead
beneficiation wastewater
added
zinc beneficiation
sulfuric acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711266025.6A
Other languages
Chinese (zh)
Inventor
纪锐
陆跃邦
朱家锐
江锐
王明飞
赵学忠
邓文
张天昌
吴磊
岳庭忠
余红花
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yunnan Chihong Zinc and Germanium Co Ltd
Original Assignee
Yunnan Chihong Zinc and Germanium Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yunnan Chihong Zinc and Germanium Co Ltd filed Critical Yunnan Chihong Zinc and Germanium Co Ltd
Priority to CN201711266025.6A priority Critical patent/CN107986494A/en
Publication of CN107986494A publication Critical patent/CN107986494A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities

Abstract

The present invention relates to a kind of method for removing lead ion in lead zinc beneficiation wastewater, belong to lead zinc beneficiation wastewater processing technology field;This method concretely comprises the following steps:Lead zinc beneficiation wastewater is imported into regulating reservoir, sodium carbonate liquor is added in regulating reservoir, sulfuric acid is added on regulating reservoir outlet pipeline, it is 9 10 to adjust pH, and the waste water after addition sulfuric acid is adjusted enters coagulation reaction tank, and coagulation-flocculation agent is added in coagulation reaction tank, enter neutralization pond through precipitating obtained supernatant, sulfuric acid is added in neutralization pond, pH is adjusted to neutrality, further removes mercury;This method lead removal efficiency reaches more than 99%, and gained recycle-water lead ion content is down to 1 mg/m3Hereinafter, technological process is simple, and water treatment effect is stablized, and agents useful for same is cheap, economical and practical, easy to industrialize large-scale application.

Description

A kind of method for removing lead ion in lead zinc beneficiation wastewater
Technical field
The invention belongs to lead zinc beneficiation wastewater processing technology field, specifically, is related to a kind of removing lead zinc beneficiation wastewater The method of middle lead ion.
Background technology
Lead zinc beneficiation wastewater is in strong basicity mostly, and contains substantial amounts of heavy metal ion and suspended matter, lead especially therein Ion concentration is high, and such water body should not directly outer be arranged, and is generally back to beneficiation flowsheet.But high-content in beneficiation wastewater Lead ion serious interference can be caused to lead zinc floatation indicators, the influence for avoiding lead ion from bringing, before reuse must to choosing Lead ion in ore deposit waste water is effectively removed, while recycles lead deposits thing, lifts valuable metal resource utilization.
The method that existing technique waste water deleading technique precipitates lead ion using heavy metal collector is directly added more, still Heavy metal collector is expensive, and great cost can be produced in large-scale industrial application, to lead zinc Mineral Processing Enterprises Wastewater treatment and renovation brings great cost pressure.
It is therefore desirable to be improved to the method for removing lead of existing lead zinc beneficiation wastewater, make its efficient removal lead ion Meanwhile it is economic and environment-friendly, easy to industrialize large-scale application.
The content of the invention
In order to overcome problem present in background technology, the present invention provides one kind to remove lead ion in lead zinc beneficiation wastewater Method, efficiently except lead and economic and environment-friendly can make that by the beneficiation wastewater handled except lead flotation engineering can be back to.
The method of lead ion comprises the following steps that in the removing lead zinc beneficiation wastewater:
1) lead zinc beneficiation wastewater is imported into regulating reservoir, sodium carbonate liquor is added in regulating reservoir;
2) addition sulfuric acid is exported in regulating reservoir outlet pipe, adjusts pH, the waste water after addition sulfuric acid is adjusted enters coagulating Pond;
3) coagulation-flocculation agent is added in coagulation reaction tank;
4) mixture come out from coagulation reaction tank enters primary sedimentation basin, obtains a heavy leaded underflow in pond and supernatant;
5) gained supernatant enters neutralization pond, and sulfuric acid is added in neutralization pond, adjusts pH;
6) mixture that neutralization pond comes out enters secondary sedimentation tank, obtains the leaded underflow of secondary settling tank and recycle-water, recycle-water It is back to beneficiation flowsheet.
Further, the concentration of the sodium carbonate liquor described in step 1) is 10%, additive amount 8-10L/m3
Further, pH is adjusted to 9-10 in step 2).
Further, the coagulation-flocculation agent described in step 3) is aluminum sulfate that concentration is 5% and concentration is 0.10%, molecule Anionic PAM of the amount more than 12,000,000, additive amount is 0.8-1.1L/m3
Further, pH is adjusted in step 5) to neutrality.
Further, the one of the gained heavy leaded underflow in pond and the leaded underflow of secondary settling tank is used for the recycling of lead.
The glue that remaining organic matter is formed with free lead in water in lead zinc beneficiation wastewater under strong basicity environment is utilized in this method Body equilibrium system and lead hydroxide, the physicochemical properties of lead sulfate indissoluble, first pass through and add carbonic acid into lead zinc beneficiation wastewater Sodium, stablizes water body colloid equilibrium system while water body calcium ions and magnesium ions are removed, then is added into strong basicity lead zinc beneficiation wastewater Suitable sulfuric acid, with colloid equilibrium system existing for the former strong basicity Lead in Aqueous Solution of destruction, makes the lead ion dissolved in colloid Largely separated out with precipitation form, then under coagulation-flocculation agent effect, free lead most in water is flocculated sedimentation;Again to In gained supernatant add moderate amount of sulfuric acid in and water body so that remaining lead is settled again in the form of lead sulfate in water body, realize The removing and recycling of Pb In Exhausted Water.
This reality advantageous effect of the invention:The method of lead ion is anti-by two sulphoxylic acid substep in the removing lead zinc beneficiation wastewater Adjust so that lead removal efficiency reaches more than 99% in beneficiation wastewater, and gained recycle-water lead ion content is down to 1mg/m3Hereinafter, reach To ore dressing reuse requirement, gained lead deposits thing is easy to the recycling of lead;Do not introduced in the processing method processing procedure new Impurity component, can effectively avoid unknown component medicament and is mixed into the influence that reuse water body brings flotation operation;And technological process letter Single, water treatment effect is stablized, and agents useful for same is cheap, economical and practical, easy to industrialize large-scale application.
Brief description of the drawings
Fig. 1 is the process flow chart of the present invention
Embodiment
Below in conjunction with the embodiment of the present invention and Figure of description, the technical solution in the embodiment of the present invention is carried out clear Chu, be fully described by, it is clear that and described embodiment is only part of the embodiment of the present invention, instead of all the embodiments, Based on the embodiments of the present invention, what those of ordinary skill in the art were obtained without creative efforts is all Other embodiments, belong to the scope of protection of the invention.
Embodiment 1
1) the lead zinc beneficiation wastewater that pH is 11-12 is imported into regulating reservoir, the carbonic acid that concentration is 10% is added in regulating reservoir Sodium solution, additive amount 10L/m3
2) sulfuric acid is added on regulating reservoir outlet pipeline, adjusts pH to 10, the waste water after addition sulfuric acid is adjusted enters coagulation Reaction tank;
3) aluminum sulfate that concentration is 5%, additive amount 1.1L/m are added in coagulation reaction tank3, adding concentration is 0.10%th, molecular weight is more than 12,000,000 anionic PAM, the equal 1.1L/m of dosage3
4) mixture come out from coagulation reaction tank enters primary sedimentation basin, obtains a heavy leaded underflow in pond and supernatant;
5) gained supernatant enters neutralization pond, and sulfuric acid is added in neutralization pond, adjusts pH to neutrality;
6) mixture that neutralization pond comes out enters secondary sedimentation tank, obtains the leaded underflow of secondary settling tank and recycle-water, recycle-water It is back to beneficiation flowsheet.
In subtractive process, analysis is sampled, obtaining lead content in the lead zinc beneficiation wastewater without removing after testing is 120mg/m3, lead content is 0.98mg/m in gained recycle-water after above-mentioned technique takes off lead processing3, meet reuse standard, lead The rate of recovery is 99.18%.
Embodiment 2
1) the lead zinc beneficiation wastewater that pH is 11-12 is imported into regulating reservoir, the carbonic acid that concentration is 10% is added in regulating reservoir Sodium solution, additive amount 8L/m3
2) sulfuric acid is added on regulating reservoir outlet pipeline, adjusts pH to 9, the waste water after addition sulfuric acid is adjusted is anti-into coagulation Ying Chi;
3) aluminum sulfate that concentration is 5%, additive amount 0.8L/m are added in coagulation reaction tank3, adding concentration is 0.10%th, molecular weight is more than 12,000,000 anionic PAM, the equal 0.9L/m of dosage3
4) mixture come out from coagulation reaction tank enters primary sedimentation basin, obtains a heavy leaded underflow in pond and supernatant;
5) gained supernatant enters neutralization pond, and sulfuric acid is added in neutralization pond, adjusts pH to neutrality;
6) mixture that neutralization pond comes out enters secondary sedimentation tank, obtains the leaded underflow of secondary settling tank and recycle-water, recycle-water It is back to beneficiation flowsheet.
In subtractive process, analysis is sampled, obtaining lead content in the lead zinc beneficiation wastewater without removing after testing is 125mg/m3, lead content is 0.97mg/m in gained recycle-water after above-mentioned technique takes off lead processing3, meet reuse standard, lead The rate of recovery is 99.22%.
Embodiment 3
1) the lead zinc beneficiation wastewater that pH is 11-12 is imported into regulating reservoir, the carbonic acid that concentration is 10% is added in regulating reservoir Sodium solution, additive amount 9L/m3
2) sulfuric acid is added on regulating reservoir outlet pipeline, adjusts pH to 9.5, the waste water after addition sulfuric acid is adjusted enters coagulation Reaction tank;
3) aluminum sulfate that concentration is 5%, additive amount 0.9L/m are added in coagulation reaction tank3, adding concentration is 0.10%th, molecular weight is more than 12,000,000 anionic PAM, the equal 0.9L/m of dosage3
4) mixture come out from coagulation reaction tank enters primary sedimentation basin, obtains a heavy leaded underflow in pond and supernatant;
5) gained supernatant enters neutralization pond, and sulfuric acid is added in neutralization pond, adjusts pH to neutrality;
6) mixture that neutralization pond comes out enters secondary sedimentation tank, obtains the leaded underflow of secondary settling tank and recycle-water, recycle-water It is back to beneficiation flowsheet.
In subtractive process, analysis is sampled, obtaining lead content in the lead zinc beneficiation wastewater without removing after testing is 114mg/m3, lead content is 0.98mg/m in gained recycle-water after above-mentioned technique takes off lead processing3, meet reuse standard, lead The rate of recovery is 99.14%.
Experimental analysis:
Recycle-water that embodiment 1-3 processing obtains is respectively adopted and non-recycle-water carries out ore-dressing practice under the conditions of communicating, Its ore dressing data is as follows:
This method has been successfully applied at Yunnan Chihong Zinc & Germanium Co., Ltd.'s Huize Mining Industry Subsidiary Company beneficiation wastewater During managing reuse, there is data above as it can be seen that taking off the recycle-water that lead handles by present invention process is used for ore-dressing practice stream Journey, each mineral processing index, without obvious fluctuation, meet ore dressing reuse standard relative to clear water.
Finally illustrating, preferred embodiment above and attached drawing are merely illustrative of the technical solution of the present invention and unrestricted, Although the present invention has been described in detail by above preferred embodiment, however, those skilled in the art should understand that, Various changes, the model limited without departing from claims of the present invention can be made to it in the form and details Enclose.

Claims (6)

  1. A kind of 1. method for removing lead ion in lead zinc beneficiation wastewater, it is characterised in that:In the removing lead zinc beneficiation wastewater The method of lead ion comprises the following steps that:
    1)Lead zinc beneficiation wastewater is imported into regulating reservoir, sodium carbonate liquor is added in regulating reservoir;
    2)Addition sulfuric acid is exported in regulating reservoir outlet pipe, adjusts pH, the waste water after addition sulfuric acid is adjusted enters coagulation reaction tank;
    3)Coagulation-flocculation agent is added in coagulation reaction tank;
    4)The mixture come out from coagulation reaction tank enters primary sedimentation basin, obtains a heavy leaded underflow in pond and supernatant;
    5)Gained supernatant enters neutralization pond, and sulfuric acid is added in neutralization pond, adjusts pH;
    6)The mixture that neutralization pond comes out enters secondary sedimentation tank, obtains the leaded underflow of secondary settling tank and recycle-water, and recycle-water enters Next step advanced treating flow, is back to beneficiation flowsheet afterwards.
  2. A kind of 2. method for removing lead ion in lead zinc beneficiation wastewater according to claim 1, it is characterised in that:Step 1)Described in sodium carbonate liquor concentration be 10%, additive amount is 8-10 L/m3.
  3. A kind of 3. method for removing lead ion in lead zinc beneficiation wastewater according to claim 1, it is characterised in that:Step 2)Middle pH is adjusted to 9-10.
  4. A kind of 4. method for removing lead ion in lead zinc beneficiation wastewater according to claim 1, it is characterised in that:Step 3) Described in coagulation-flocculation agent be aluminum sulfate that concentration is 5% and concentration is 0.1%, molecular weight is more than 12,000,000 anionic PAM, additive amount are 0.8-1.1 L/m3.
  5. A kind of 5. method for removing lead ion in lead zinc beneficiation wastewater according to claim 1, it is characterised in that:Step 5) Middle adjusting pH is to neutrality.
  6. A kind of 6. method for removing lead ion in lead zinc beneficiation wastewater according to claim 1, it is characterised in that:Gained The one heavy leaded underflow in pond and the leaded underflow of secondary settling tank is used for the recycling of lead.
CN201711266025.6A 2017-12-05 2017-12-05 A kind of method for removing lead ion in lead zinc beneficiation wastewater Pending CN107986494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711266025.6A CN107986494A (en) 2017-12-05 2017-12-05 A kind of method for removing lead ion in lead zinc beneficiation wastewater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711266025.6A CN107986494A (en) 2017-12-05 2017-12-05 A kind of method for removing lead ion in lead zinc beneficiation wastewater

Publications (1)

Publication Number Publication Date
CN107986494A true CN107986494A (en) 2018-05-04

Family

ID=62035598

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711266025.6A Pending CN107986494A (en) 2017-12-05 2017-12-05 A kind of method for removing lead ion in lead zinc beneficiation wastewater

Country Status (1)

Country Link
CN (1) CN107986494A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109569888A (en) * 2018-11-30 2019-04-05 广东省资源综合利用研究所 A kind of floatation wastewater reuse method of the apatite containing rare metal
CN111495581A (en) * 2020-05-21 2020-08-07 广东省资源综合利用研究所 Beneficiation method for recycling lead-zinc ore beneficiation treatment wastewater

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882064A (en) * 1981-04-06 1989-11-21 Commonwealth Scientific and Research Organization Method of removing impurities from hard waters or waters with significant calcium/magnesium concentrations
CN1234620C (en) * 2004-04-06 2006-01-04 南京栖霞山锌阳矿业有限公司 Method for cyclic utilizing mineral dressing waste water from sulphur ore of lead-zinc
CN106145446A (en) * 2016-08-10 2016-11-23 云南驰宏锌锗股份有限公司 The complicated quick processing system of waste water of a kind of lead zinc sulphur many metals ore dressing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882064A (en) * 1981-04-06 1989-11-21 Commonwealth Scientific and Research Organization Method of removing impurities from hard waters or waters with significant calcium/magnesium concentrations
CN1234620C (en) * 2004-04-06 2006-01-04 南京栖霞山锌阳矿业有限公司 Method for cyclic utilizing mineral dressing waste water from sulphur ore of lead-zinc
CN106145446A (en) * 2016-08-10 2016-11-23 云南驰宏锌锗股份有限公司 The complicated quick processing system of waste water of a kind of lead zinc sulphur many metals ore dressing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109569888A (en) * 2018-11-30 2019-04-05 广东省资源综合利用研究所 A kind of floatation wastewater reuse method of the apatite containing rare metal
CN111495581A (en) * 2020-05-21 2020-08-07 广东省资源综合利用研究所 Beneficiation method for recycling lead-zinc ore beneficiation treatment wastewater

Similar Documents

Publication Publication Date Title
CN107986494A (en) A kind of method for removing lead ion in lead zinc beneficiation wastewater
CN102689956B (en) Silicon removing method for silicone waste water
CN105347542B (en) One kind reuses technique after utilizing guar gum fracturing outlet liquid water process
CN102826695B (en) Scheelite beneficiation wastewater treatment technique
CN103159346A (en) Pretreatment method and pretreatment equipment of fracturing flowback liquid of oil field
CN104108810B (en) A kind of method reclaiming lead and mercury from acid waste water
CN104986892A (en) Tin stripping waste liquid treating method
CN103521357A (en) Method for utilizing return water of separation flotation for copper and molybdenum bulk concentrates
CN106745598B (en) Method for reducing COD (chemical oxygen demand) of tungsten ore dressing tailing pulp
CN108728642B (en) Method for recycling rare earth by reusing mother liquor after rare earth is precipitated by weathering crust leaching solution ammonium bicarbonate
CN204079666U (en) One is applied to shale gas recirculation water circulation and stress treatment unit
CN106007292A (en) Method and device for respectively extracting and using inorganic matters in sludge
CN108715491A (en) A kind of processing method of nanofiltration concentrate to landfill leachate
CN102689961B (en) Desilication flocculant used in silica gel wastewater treatment
CN104150639A (en) Treatment method of limestone-gypsum wet flue gas desulfurization waste water of steel sintering machine
CN204356189U (en) Ni-containing Plating Wastewater pre-treatment and nickel retrieving arrangement
CN102774977A (en) Method capable of high efficiency removal of phosphorus in coating waste water
CN108821472A (en) Metal top cradle and wastewater recycling method in precipitating-gas floatation process recycling Cyanide Wastewater of Gold Mine
CN204958613U (en) Oil field well workover liquid water disposal system
CN104745811A (en) Acid ore washing biological leaching process used for high mud alkaline uranium ore
CN204897624U (en) Sulphur ammonium waste water comprehensive control retrieval and utilization device is smelted to tombarthite
CN203360181U (en) Treatment tank used for treating waste liquid of noble metal reclaiming process
CN102942274B (en) Treatment method of saline and alkaline wastewater in copper oxide production process
CN105692954A (en) Method of reducing residue yield during acidic wastewater treatment
CN212924676U (en) Silicon-containing wastewater treatment system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination