CN102030439A - Sewage and waste acid treatment device and treatment process thereof - Google Patents
Sewage and waste acid treatment device and treatment process thereof Download PDFInfo
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- CN102030439A CN102030439A CN 201010553294 CN201010553294A CN102030439A CN 102030439 A CN102030439 A CN 102030439A CN 201010553294 CN201010553294 CN 201010553294 CN 201010553294 A CN201010553294 A CN 201010553294A CN 102030439 A CN102030439 A CN 102030439A
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Abstract
The invention discloses a sewage and waste acid treatment device and a treatment process thereof, and belongs to technology for sewage and waste acid treatment. By effectively combining chemical treatment grading segmentation and combined filtering, arsenic, fluorine, mercury, lead, zinc, cadmium and other heavy metal ions in the waste acid are fully precipitated in equivalent grading, and the chemical treatment index is easily controlled; therefore, the chemical treatment effect is improved. Meanwhile, total chemical treatment amount, particularly the amount of relatively high-price sodium sulfide, is reduced, and a flocculating agent is saved; therefore, the operating cost is reduced. By fully utilizing characteristics of expanding film filtering and plate and frame filtering, the discharge indexes of supernatant and solid residues can be effectively controlled, the discharged water is expanding film filtered supernatant, the discharged water reaches emission standards, the discharged solid residues are plate and frame filtered residues, the moisture content is lower, and the treatment is environmentally-friendly.
Description
Technical field
The present invention relates to the dirty acid treatment technology of sewage, particularly a kind of dirty sour treatment process of sewage that is fit to be applied to polluted enterprises production generations such as nonferrous smelting, sulfuric acid industry.
Background technology
In China, nonferrous smelting, sulfuric acid industry etc. has the industry of heavily contaminated, in its production process, can constantly produce a large amount of sewage, dirty acid.Wherein particularly nonferrous smelting relieving haperacidity purifies outer blowdown acid, contains the objectionable constituent of higher concentration usually, and is very big to human body and biological hazard as heavy metal ion such as acid, arsenic, fluorine, mercury and lead, zinc, cadmiums etc., must carry out environmental protection treatment.What sewage, dirty acid treatment were at present the most frequently used is chemical precipitation method, the general alkaline materials such as oxyhydroxide, sulfide that adopt, and molysite, alum coagulating agent such as (Tai-Ace S 150), through one or more levels neutralization, aeration, sedimentation, filtration, pass through solid-liquid separation, remove throw out, make sewage, dirty acid be purified qualified discharge.There are the sewage of heavily contaminated, dirty acid to carry out environmental protection treatment to this, difficulty is bigger, treatment process is varied at present, but remain many defectives,, floor space higher as working cost is big, work under bad environment, belong to intermittent production mostly, and the supernatant liquor water quality inferiority after separating, and can not effectively control, be difficult to qualified discharge or rapid return is recycled as service water, cause environmental pollution and waste water resource.Therefore many enterprises stop, the underproduction, or are imposed a fine by environmental administration, or loss arround the reparations, and environmental protection pressure is big.
Summary of the invention
The objective of the invention is in order to overcome the shortcoming and defect that prior art exists, and provide a kind for the treatment of water to meet the qualified discharge standard, and effectively reduce the operation continuously of working cost, facility compact, can be applicable to the especially dirty acid-treated sewage of the externally discharged waste water dirty acid treatment device that purifies of nonferrous smelting of heavy polluted industry.
Another object of the present invention provides a kind of dirty acid treatment device of above-mentioned sewage dirty acid treatment process of sewage that dirty acid is handled to sewage of using.
For realizing first purpose of the present invention, technical scheme of the present invention is to include the dirty acid tank of pre-treatment, the milk of lime liquid bath, neutralizing well, aerator tank, each transferpump, plate-and-frame filter press, medial launder, recoil cripling filtration unit, and the control valve that is used for pipeline connection control, wherein medial launder includes neutralizing well and medial launder, described recoil cripling filtration unit includes cripling tubulating type filtrator, dirty acid tank of described pre-treatment and milk of lime liquid bath are communicated with the fluid inlet of neutralizing well respectively, described neutralizing well, aerator tank, plate-and-frame filter press, medial launder, and cripling tubulating type filtrator is communicated with successively, and the bottom of this cripling tubulating type filtrator and aerator tank are connected.
Further being provided with is that described aerator tank is multistage aerator tank, and this multistage aerator tank comprises one section aerator tank, two sections aerator tanks and latter end aerator tank, and the bottom and the latter end aerator tank of described recoil cripling strainer are connected.
Further be provided with is that described recoil cripling filtration unit also includes the moving pipe clip valve of fast unlatching and is used to control the PLC controller that the moving pipe clip valve of fast unlatching opens and closes, the moving pipe clip valve of described fast unlatching has two, and is arranged between cripling tubulating type filtrator and the aerator tank respectively and between medial launder and the cripling tubulating type filtrator.This setting is controlled by the PLC controller, realizes that each station automatic sequential switches, and reaches efficient, energy-conservation, non-stop run.
Further being provided with is to be provided with between medial launder and the cripling tubulating type filtrator to transport pump.
Further being provided with is to be provided with between aerator tank and the plate-and-frame filter press to transport pump.Certainly, this setting, when aerator tank comprised one section aerator tank, two sections aerator tanks and latter end aerator tank, this transported pump and is arranged between latter end aerator tank and the plate-and-frame filter press.
Further be provided with is to be provided with whipping appts on the dirty acid tank of described pre-treatment, milk of lime liquid bath, neutralizing well I, neutralizing well II and the aerator tank.
Another goal of the invention of the present invention is achieved through the following technical solutions, and comprises following operation:
(1) squeezes into the dirty acid of sewage in the dirty acid tank of pre-treatment, lime slurry is squeezed into the milk of lime liquid bath;
(2) dirty acid of pre-treatment and lime slurry are added neutralizing well I, stir and aeration, impel dirty acid of sewage and lime slurry reaction;
(3) treatment solution among the neutralizing well I is entered aerator tank, in and aeration; Step (2) and (3) are the one-level chemical treatment, by the one-level chemical treatment, each ite changes hydrochlorate in the dirty sour sewage, make the solid-state Tricalcium arsenate of formation, Calcium Fluoride (Fluorspan), calcium salt and mercury salt throw out, heavy metal oxides etc. such as heavy metal ion such as most arsenic, fluorine, mercury and lead, zinc, cadmium, separate out with solid-state.
(4) with the treatment solution in the aerator tank, squeeze into plate-and-frame filter press, carry out the one-level filter press; This step is utilized the filter press characteristic, and plate-and-frame filter press effluxes filter residue and is solid-state, and its water content is lower, is convenient to environmental protection and disposes; Efflux filtrate and enter the further chemical treatment of medial launder.
(5) filtrate that effluxes after the plate-and-frame filter press press filtration is entered in the medial launder, and add sodium sulphite again in the treatment solution of medial launder and carry out the secondary chemical treatment; This step adds sodium sulphite and carries out the secondary chemical treatment, make once more through the solid-state red arsenic of formation, Calcium Fluoride (Fluorspan), zunsobers such as heavy metal ion such as content reduces greatly after a chemical treatment in the dirty sour sewage arsenic, fluorine, mercury and lead, zinc, cadmiums, and heavy metal oxide precipitation etc. is separated out.
(6) treatment solution that has added sodium sulphite in the medial launder is driven in the recoil cripling filtration unit and carries out the forced filtration of secondary cripling membrane filtration, supernatant liquor after wherein it filters is a qualified discharge water, and its underflow flows in the aerator tank again, enters the circulation of above-mentioned steps (4), (5), (6) once more.This step makes full use of the membrane filtration characteristic of recoil cripling filtration unit, and its filtering supernatant can be effectively controlled, and makes it qualified discharge, and underflow reenters circulation.
Further being provided with is that described aerator tank is multistage aerator tank, this multistage aerator tank comprises one section aerator tank, two sections aerator tanks and latter end aerator tank, the bottom and the latter end aerator tank of described recoil cripling strainer are connected, and the end of recoil cripling filtration unit flow in the latter end aerator tank and circulates in the described step (6).
Further be provided with is that described recoil cripling filtration unit also includes the moving pipe clip valve of fast unlatching and is used to control the PLC controller that the moving pipe clip valve of fast unlatching opens and closes, the moving pipe clip valve of described fast unlatching has two, and is arranged between cripling tubulating type filtrator and the aerator tank respectively and between medial launder and the cripling tubulating type filtrator.
Advantage of the present invention is that effective bonded technical scheme is filtered in chemical treatment is hierarchical segmented, cripling membrane filtration and filter press combination filtration, chemical treatment and combination.The one-level chemical treatment is adopted cheap earlier, the good lime slurry of versatility neutralizes and through a plurality of storage tanks gravity flow multistage aerations, in and when spent acid improves pH value, make each ite change hydrochlorate into, can make most arsenic, fluorine, mercury and lead, zinc, heavy metal ion such as cadmium etc. form solid-state Tricalcium arsenate, Calcium Fluoride (Fluorspan), calcium salt and mercury salt throw out, and the heavy metal oxide precipitation etc., then through the one-level filter press, remove the filtered water behind the big portion throw out, add sodium sulphite again and carry out the secondary chemical treatment, can effectively improve the utilization ratio of sodium sulphite, further improve the chemical treatment effect, make in the filtered water once more, the arsenic that content reduces greatly, fluorine, mercury and lead, zinc, heavy metal ion such as cadmium etc. form solid-state red arsenic, Calcium Fluoride (Fluorspan), zunsober, and the heavy metal oxide precipitation etc., then through the forced filtration of secondary cripling membrane filtration, make full use of the membrane filtration characteristic, its filtering supernatant can be effectively controlled, make it qualified discharge, or rapid return is recycled as service water.Underflow enters the press filtration again of one-level plate-and-frame filter press once more through the latter end aerator tank.Utilize the filter press characteristic, the one-level plate-and-frame filter press effluxes filter residue and is solid-state, and its water content is lower, is convenient to environmental protection and disposes.And the filter press filtered water enters secondary chemical treatment operation again, so the outer draining of the dirty sour sewage water treatment method of patent of the present invention has only the supernatant liquor through the forced filtration of secondary cripling of qualified discharge.
Owing to the invention provides above-mentioned series of process technical scheme, chemical treatment is hierarchical segmented and filter effective the combination with combination, compare with other method, its advantage is: classifications such as heavy metal ion such as arsenic, fluorine, mercury and lead in the dirty acid, zinc, cadmium are fully separated out, the chemical treatment index is easy to control, thereby has improved the chemical treatment effect; Simultaneously also reduced total chemical processing agent consumption, particularly reduced the higher relatively amount of sodium sulfide of price, and save flocculation agent, thereby made a price reduction running cost low; Made full use of cripling membrane filtration and filter press characteristic, can effectively control supernatant liquor and solid slag discharge index, outer draining is a cripling membrane filtration supernatant liquor, but qualified discharge, effluxing solid slag is the filter press filter residue, water content is lower, is convenient to environmental protection and disposes; Entire treatment technology is by groove, pipe, valve, pump, and effectively connects with instrument control etc. by flat facade layout, switching, overflow, backflow, and floor space is little, continuously-running, and Working environment can obviously improve.Thereby, for polluted enterprises such as nonferrous smelting, sulfuric acid industry are produced the sewage that produces, the treatment process of dirty acid provides a kind of effective means.
Below in conjunction with specification drawings and specific embodiments the present invention is done further introduction.
Description of drawings
The dirty acid treatment device schema of Fig. 1 sewage of the present invention.
Wherein, the dirty acid tank (1) of pre-treatment, milk of lime liquid bath (2), neutralizing well I(3), aerator tank (4), transferpump (5), plate-and-frame filter press (6), medial launder (7), recoil cripling filtration unit (8), pipeline chute valve (9).Wherein, one section aerator tank (4a), two sections aerator tanks (4b) and latter end aerator tank (4c); Recoil cripling filtration unit (8) is made up of cripling tubulating type filtrator (8a), special open soon (8e) such as pneumatic pipe clip valve (8b), PLC Controlling System (8c), metrical instrument (8d) and pipeline valves.
Embodiment
Below by embodiment the present invention is carried out concrete description; only be used for the present invention is further specified; can not be interpreted as the qualification to protection domain of the present invention, the technician in this field can make some nonessential improvement and adjustment to the present invention according to the content of foregoing invention.
With what produce in the industry production processes such as nonferrous smelting, sulfuric acid industry, contain sewage, the dirty acid of the heavy metal ion such as acid, arsenic, fluorine, mercury and lead, zinc, cadmium of higher concentration usually, squeeze into the dirty acid tank (1) of the high-order pre-treatment of native system; Also, squeeze into the high-order milk of lime liquid bath (2) of native system with the lime slurry of pulping system preparation.By liquid level, flow and pH value control, dirty acid of pre-treatment and lime slurry are added neutralizing well (3), stir and aeration, impel neutralization reaction to improve pH value, and by (9) such as pipeline chute valves, treatment solution is entered successively have the multistage aerator tank (4) of stirring, in and aeration make each ite change hydrochlorate into, make the solid-state Tricalcium arsenate of formation, Calcium Fluoride (Fluorspan), calcium salt and mercury salt throw out, heavy metal oxides etc. such as heavy metal ion such as most arsenic, fluorine, mercury and lead, zinc, cadmium, separate out with solid-state, enter latter end aerator tank (4 c) in the lump.This is the one-level chemical treatment, adopt earlier lime slurry cheap, that versatility is good to neutralize and through a plurality of storage tanks gravity flow multistage aerations, in and when spent acid improves pH value, heavy metal ion such as most arsenic, fluorine, mercury and lead, zinc, cadmium etc. are separated out with solid-state.
With the treatment solution in the latter end aerator tank (4 c), squeeze into plate-and-frame filter press (6) with transferpump (5a), carry out the one-level filter press.Utilize the filter press characteristic, the one-level plate-and-frame filter press effluxes filter residue and is solid-state, and its water content is lower, is convenient to environmental protection and disposes; Efflux filtrate and enter further chemical treatment of medial launder (7).
In medial launder (7), one-level lime slurry chemical treatment, one-level filter press solid-liquid separation, removed the filtered water behind the big portion throw out, add sodium sulphite again and carry out the secondary chemical treatment, make heavy metal ion such as arsenic, fluorine, mercury and lead that content reduces greatly, zinc, cadmium etc. form solid-state red arsenic, Calcium Fluoride (Fluorspan), zunsober once more, and heavy metal oxide precipitation etc. is separated out.
To add the treatment solution of sodium sulphite in the medial launder (7), squeezed into recoil cripling filtration unit (8), carried out the forced filtration of secondary cripling membrane filtration with transferpump (5b).Make full use of the membrane filtration characteristic, its filtering supernatant can be effectively controlled, and makes it qualified discharge, or rapid return is recycled as service water; Underflow enters the press filtration again of one-level plate-and-frame filter press once more through latter end aerator tank (4c).The outer draining of the dirty sour sewage water treatment method of patent of the present invention has only the supernatant liquor through the forced filtration of secondary cripling of qualified discharge.
Above flow process is by (9) such as pipeline chute valves, and special pneumatic pipe clip valve (8b), PLC Controlling System (8c), the metrical instrument (8d) etc. opened soon, realizes that automatic sequential switches, and reaches efficient, energy-conservation, non-stop run.The logical pressurized air of present embodiment PLC Controlling System comes the special pneumatic pipe clip valve (8b) of opening soon of open and close control.
The present invention is hierarchical segmented and filter effective the combination with combination by above-mentioned chemical treatment, and classifications such as heavy metal ion such as arsenic, fluorine, mercury and lead in the dirty acid, zinc, cadmium are fully separated out, and the chemical treatment index is easy to control, thereby has improved the chemical treatment effect; Simultaneously also reduced total chemical processing agent consumption, particularly reduced the higher relatively amount of sodium sulfide of price, and save flocculation agent, thereby made a price reduction running cost low; Made full use of cripling membrane filtration and filter press characteristic, can effectively control supernatant liquor and solid slag discharge index, outer draining is a cripling membrane filtration supernatant liquor, but qualified discharge, effluxing solid slag is the filter press filter residue, water content is lower, is convenient to environmental protection and disposes; Entire treatment technology is by groove, pipe, valve, pump, and effectively connects with instrument control etc. by flat facade layout, switching, overflow, backflow, and floor space is little, continuously-running, and Working environment can obviously improve.
Claims (9)
1. the dirty acid treatment device of a sewage, it is characterized in that: include the dirty acid tank of pre-treatment, the milk of lime liquid bath, neutralizing well, aerator tank, each transferpump, plate-and-frame filter press, medial launder, recoil cripling filtration unit, and the control valve that is used for pipeline connection control, wherein medial launder includes neutralizing well and medial launder, described recoil cripling filtration unit includes cripling tubulating type filtrator, dirty acid tank of described pre-treatment and milk of lime liquid bath are communicated with the fluid inlet of neutralizing well respectively, described neutralizing well, aerator tank, plate-and-frame filter press, medial launder, and cripling tubulating type filtrator is communicated with successively, and the bottom of this cripling tubulating type filtrator and aerator tank are connected.
2. the dirty acid treatment device of a kind of sewage according to claim 1, it is characterized in that: described aerator tank is multistage aerator tank, this multistage aerator tank comprises one section aerator tank, two sections aerator tanks and latter end aerator tank, and the bottom and the latter end aerator tank of described recoil cripling strainer are connected.
3. the dirty acid treatment device of a kind of sewage according to claim 1, it is characterized in that: described recoil cripling filtration unit also includes the moving pipe clip valve of fast unlatching and is used to control the PLC controller that the moving pipe clip valve of fast unlatching opens and closes, the moving pipe clip valve of described fast unlatching has two, and is arranged between cripling tubulating type filtrator and the aerator tank respectively and between medial launder and the cripling tubulating type filtrator.
4. the dirty acid treatment device of a kind of sewage according to claim 1 is characterized in that: be provided with between medial launder and the cripling tubulating type filtrator and transport pump.
5. the dirty acid treatment device of a kind of sewage according to claim 1 is characterized in that: be provided with between aerator tank and the plate-and-frame filter press and transport pump.
6. according to the dirty acid treatment device of the described a kind of sewage of one of claim 1-5, it is characterized in that: be provided with whipping appts on the dirty acid tank of described pre-treatment, milk of lime liquid bath, neutralizing well I, neutralizing well II and the aerator tank.
7. dirty acid treatment process of sewage that adopts the dirty acid treatment device of sewage as claimed in claim 1 is characterized in that comprising following operation:
(1) squeezes into the dirty acid of sewage in the dirty acid tank of pre-treatment, lime slurry is squeezed into the milk of lime liquid bath;
(2) dirty acid of pre-treatment and lime slurry are added neutralizing well I, stir and aeration, impel dirty acid of sewage and lime slurry reaction;
(3) treatment solution among the neutralizing well I is entered aerator tank, in and aeration;
(4) with the treatment solution in the aerator tank, squeeze into plate-and-frame filter press, carry out the one-level filter press;
(5) filtrate that effluxes after the plate-and-frame filter press press filtration is entered in the medial launder, and add sodium sulphite again in the treatment solution of medial launder and carry out the secondary chemical treatment;
(6) treatment solution that has added sodium sulphite in the medial launder is driven in the recoil cripling filtration unit and carries out the forced filtration of secondary cripling membrane filtration, supernatant liquor after wherein it filters is a qualified discharge water, and its underflow flows in the aerator tank again, enters the circulation of above-mentioned steps (4), (5), (6) once more.
8. the dirty acid treatment process of a kind of sewage according to claim 7, it is characterized in that: described aerator tank is multistage aerator tank, this multistage aerator tank comprises one section aerator tank, two sections aerator tanks and latter end aerator tank, the bottom and the latter end aerator tank of described recoil cripling strainer are connected, and the end of recoil cripling filtration unit flow in the latter end aerator tank and circulates in the described step (6).
9. according to claim 7 or the dirty acid treatment process of 8 described a kind of sewage, it is characterized in that: described recoil cripling filtration unit also includes the moving pipe clip valve of fast unlatching and is used to control the PLC controller that the moving pipe clip valve of fast unlatching opens and closes, the moving pipe clip valve of described fast unlatching has two, and is arranged between cripling tubulating type filtrator and the aerator tank respectively and between medial launder and the cripling tubulating type filtrator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010553294 CN102030439A (en) | 2010-11-22 | 2010-11-22 | Sewage and waste acid treatment device and treatment process thereof |
| CN 201110324493 CN102432119B (en) | 2010-11-22 | 2011-10-21 | Sewage and waste acid treatment device and treatment process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010553294 CN102030439A (en) | 2010-11-22 | 2010-11-22 | Sewage and waste acid treatment device and treatment process thereof |
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| CN102030439A true CN102030439A (en) | 2011-04-27 |
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| CN 201110324493 Active CN102432119B (en) | 2010-11-22 | 2011-10-21 | Sewage and waste acid treatment device and treatment process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074503A (en) * | 2013-02-27 | 2013-05-01 | 老河口市绿华环保科技有限公司 | Wastewater zero discharging system and method for vanadium extraction from stone coal |
| CN104003554A (en) * | 2014-06-04 | 2014-08-27 | 武汉飞博乐环保工程有限公司 | Waste acid purifying device and process |
| CN112174382A (en) * | 2020-10-14 | 2021-01-05 | 上海三邦水处理技术有限公司 | Semiconductor industrial wastewater treatment technology and recycling process |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103172201A (en) * | 2013-03-28 | 2013-06-26 | 刘立文 | Device and technology for processing waste acid |
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| JPS5659606A (en) * | 1979-10-18 | 1981-05-23 | Sumitomo Metal Mining Co Ltd | Purifying method for aqueous acidic solution containing h2so4 |
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| CN103074503B (en) * | 2013-02-27 | 2014-04-02 | 老河口市绿华环保科技有限公司 | Wastewater zero discharging system and method for vanadium extraction from stone coal |
| CN104003554A (en) * | 2014-06-04 | 2014-08-27 | 武汉飞博乐环保工程有限公司 | Waste acid purifying device and process |
| CN104003554B (en) * | 2014-06-04 | 2015-08-05 | 武汉飞博乐环保工程有限公司 | A kind of spent acid refining plant and technique |
| CN112174382A (en) * | 2020-10-14 | 2021-01-05 | 上海三邦水处理技术有限公司 | Semiconductor industrial wastewater treatment technology and recycling process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102432119A (en) | 2012-05-02 |
| CN102432119B (en) | 2013-04-24 |
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Open date: 20110427 |