CN202610045U - Processing system of heavy-metal-contained acid wastewater - Google Patents

Processing system of heavy-metal-contained acid wastewater Download PDF

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Publication number
CN202610045U
CN202610045U CN2012201400991U CN201220140099U CN202610045U CN 202610045 U CN202610045 U CN 202610045U CN 2012201400991 U CN2012201400991 U CN 2012201400991U CN 201220140099 U CN201220140099 U CN 201220140099U CN 202610045 U CN202610045 U CN 202610045U
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CN
China
Prior art keywords
reverse osmosis
water
osmosis membrane
pressure pump
membrane section
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Expired - Lifetime
Application number
CN2012201400991U
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Chinese (zh)
Inventor
黄怀国
张卿
季常青
林国钦
陈启斌
邱耀兴
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Xiamen Zijin Mining and Metallurgy Technology Co Ltd
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Xiamen Zijin Mining and Metallurgy Technology Co Ltd
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Priority to CN2012201400991U priority Critical patent/CN202610045U/en
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Publication of CN202610045U publication Critical patent/CN202610045U/en
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Abstract

The utility model discloses a processing system of heavy-metal-contained acid wastewater. The processing system of the heavy-metal-contained acid wastewater comprises a preprocessing part and a reverse osmosis part, wherein the preprocessing part comprises an initial settling pond, a sand filtering pond, a raw water pond, a cellulose filtering apparatus and an ultrafiltration device which are communicated in sequence; the reverse osmosis part comprises a first pressure pump, a first-stage reverse osmosis apparatus, a second pressure pump and a second-stage reverse osmosis apparatus which are communicated in sequence, concentrated water of the first-stage reverse osmosis apparatus enters the second-stage reverse osmosis apparatus through the second pressure pump, and concentrated water of the second-stage reverse osmosis apparatus flows out from a concentrated water outlet of the second-stage reverse osmosis apparatus; product water of the first-stage reverse osmosis apparatus and the second-stage reverse osmosis apparatus flows out from product water outlets of the first-stage reverse osmosis apparatus and the second-stage reverse osmosis apparatus; and a water outlet of the ultrafiltration device is communicated with a water inlet of the first pressure pump. According to the processing system of the heavy-metal-contained acid wastewater, heave metal is effectively recycled, and meanwhile, the secondary pollution to the environment is avoided; and the operation of the whole processing system is simple, and the investment and operation cost is low.

Description

A kind of treatment system of acid waste water containing heavy metal
Technical field
The utility model belongs to the Industrial Wastewater Treatment field, is specifically related to a kind of treatment system of acid waste water containing heavy metal.
Background technology
Acid waste water containing heavy metal is the bigger trade effluent of hazard rating, extensively is present in nonferrous metal mine, Metal smelting, ore dressing and electroplating industry.To the treatment process of acid waste water containing heavy metal, mainly contain lime neutralisation, sulphide precipitation and biological process etc. in the prior art.What wherein lime precipitation was used is the most extensive, but the sediment of processing back generation is more and the dehydration difficulty, and occupation of land is big, stores up the easy secondary dissolving of heavy metal oxide in the process, causes the secondary pollution to water surrounding; The pH value accommodation of sulphide precipitation is big, but the valuable metal in the efficient recovery waste water, but its precipitation agent source is limited, cost an arm and a leg, and the hydrogen sulfide that produces causes atmospheric pollution easily; Though biological process can effectively reclaim valuable metal and be difficult for causing second environmental pollution, its investment and working cost are all higher, and the sulfide precipitation added value that obtains is lower, and still further processing thereby comprehensive cost are higher for the waste water after the processing.
The utility model content
The purpose of the utility model is to overcome the prior art defective, provides a kind of simple to operate, and is with low cost and can effectively avoid the treatment system of the acid waste water containing heavy metal of secondary pollution.
The technical scheme of the utility model is following:
A kind of treatment system of acid waste water containing heavy metal, it comprises the r-o-part that acid waste water containing heavy metal is carried out pretreated preprocessing part and pretreated acid waste water containing heavy metal is handled, wherein,
Said preprocessing part comprises preliminary sedimentation tank, sand filter, former pond, Mierocrystalline cellulose filtration unit and the ultra-filtration equipment that is communicated with successively;
Said r-o-partly comprises first pressure pump, first step reverse osmosis unit, second pressure pump and second stage reverse osmosis unit; Wherein, said first step reverse osmosis unit has water-in, dense water out and produces water out, and said second stage reverse osmosis unit has water-in, dense water out and produces water out; The water outlet of said first pressure pump is connected with the water-in of said first step reverse osmosis unit; The dense water out of said first step reverse osmosis unit is connected with the water-in of said second pressure pump; The water outlet of said second pressure pump is connected with the water-in of said second stage reverse osmosis unit, and the dense water out of said second stage reverse osmosis unit is connected with follow-up dense water treating equipment; The product water out of the said first step and second stage reverse osmosis unit all is connected with the product pond;
The water outlet of said ultra-filtration equipment is connected with the water-in of said first pressure pump.
In a preferred version of the utility model; Said first step reverse osmosis unit comprises the first reverse osmosis membrane section parallel with one another and the second reverse osmosis membrane section; Said second stage reverse osmosis unit; Comprise the 3rd reverse osmosis membrane section parallel with one another and the 4th reverse osmosis membrane section, the said first, second, third and the 4th reverse osmosis membrane Duan Jun has water-in, dense water out and produces water out; The water outlet of said first pressure pump is connected with the water-in of the said first reverse osmosis membrane section and the second reverse osmosis membrane section; The dense water out of the said first reverse osmosis membrane section and the second reverse osmosis membrane section is connected with the water-in of said second pressure pump; The water outlet of said second pressure pump is connected with the water-in of said the 3rd reverse osmosis membrane section and the 4th reverse osmosis membrane section; The dense water out of said the 3rd reverse osmosis membrane section and the 4th reverse osmosis membrane section is connected with follow-up dense water treating equipment; The product water out of the said first, second, third and the 4th reverse osmosis membrane section all is connected with the product pond, and the reverse osmosis membrane in the above-mentioned first, second, third and the 4th reverse osmosis membrane section all adopts extraordinary industrial reverse osmosis membrane.
In a preferred version of the utility model, the flux of the said first reverse osmosis membrane section is less than the flux of the second reverse osmosis membrane section, greater than the flux of the third and fourth reverse osmosis membrane section; The flow velocity of the said first reverse osmosis membrane section all be lower than said second, third with the flow velocity of the 4th reverse osmosis membrane section.
In a preferred version of the utility model, said Mierocrystalline cellulose filtration unit is the highly effective cellulose filtration unit.
In a preferred version of the utility model, said ultra-filtration equipment is excellent to be the hollow-fibre membrane ultra-filtration equipment.
In a preferred version of the utility model, the security personnel's strainer of also connecting between the said ultra-filtration equipment and first pressure pump.
The beneficial effect of the utility model is:
1, uses reverse osmosis technology acid waste water containing heavy metal is handled, in the efficient recovery heavy metal, avoided second environmental pollution.
2, adopt the preprocessing part of forming successively by preliminary sedimentation tank, sand filter, former pond, highly effective cellulose filtration unit and hollow-fibre membrane ultra-filtration equipment; Farthest acid waste water containing heavy metal has been carried out pre-treatment; Significantly reduce wherein impurity, guaranteed the efficient operation of follow-up r-o-part.
3, r-o-partly comprises the first step reverse osmosis unit that is parallel with first and second reverse osmosis membrane section and is parallel with the second stage reverse osmosis unit of the 3rd and the 4th reverse osmosis membrane section; First step reverse osmosis unit and the series connection of second stage reverse osmosis unit; And the flux of the first reverse osmosis membrane section is less than the flux of the second reverse osmosis membrane section, greater than the flux of the third and fourth reverse osmosis membrane section; The flow velocity of the first reverse osmosis membrane section all be lower than said second, third with the flow velocity of the 4th reverse osmosis membrane section, such design has effectively alleviated the infringement of foulings such as calcium sulfate, permanent white to reverse osmosis membrane, has prolonged the work-ing life of reverse osmosis membrane.
4, the entire treatment system operation is simple, and investment and working cost are cheap.
Description of drawings
Fig. 1 is a synoptic diagram of handling the reverse osmosis system of acid waste water containing heavy metal in the utility model.
Embodiment
Below combine accompanying drawing the utility model is further explained and to be described through embodiment.
Liquid communication situation in the utility model is shown in arrow in the accompanying drawing.
As shown in Figure 1, the treatment system of a kind of acid waste water containing heavy metal of the utility model, it comprises the r-o-part 2 that acid waste water containing heavy metal is carried out pretreated preprocessing part 1 and pretreated acid waste water containing heavy metal is handled, wherein,
Said preprocessing part comprises preliminary sedimentation tank 11, sand filter 12, former pond 13, highly effective cellulose filtration unit 14 and the hollow-fibre membrane ultra-filtration equipment 15 that is communicated with successively, and wherein highly effective cellulose filtration unit 14 all adopts the two pattern settings of a usefulness fully with hollow-fibre membrane ultra-filtration equipment 15.
Said r-o-partly comprises first pressure pump 21, first step reverse osmosis unit 22, second pressure pump 23 and second stage reverse osmosis unit 24; The water outlet of said first pressure pump 21 is connected with the water-in of said first reverse osmosis unit 22; The dense water out of said first reverse osmosis unit 22 is connected with the water-in of said second stage reverse osmosis unit 24 through said second pressure pump 23, and the dense water B of said second stage reverse osmosis unit 24 flows out the back from its dense water out and gets into dense pond or get into the electrodeposition recovery that extraction plant carries out heavy metal; The product water A of the said first step and second stage reverse osmosis unit 22,23 flows out the back from each self-produced water out and directly gets into the product pond, recycles;
Said r-o-partly comprises first pressure pump 21, first step reverse osmosis unit 22, second pressure pump 23 and second stage reverse osmosis unit 24; Wherein, said first step reverse osmosis unit 22 has water-in, dense water out and produces water out, and said second stage reverse osmosis unit 24 has water-in, dense water out and produces water out; The water outlet of said first pressure pump 21 is connected with the water-in of said first step reverse osmosis unit 22; The dense water out of said first step reverse osmosis unit 22 is connected with the water-in of said second pressure pump 23; The water outlet of said second pressure pump 23 is connected with the water-in of said second stage reverse osmosis unit 24; The dense water out of said second stage reverse osmosis unit 24 is connected with follow-up dense water treating equipment, and dense water B flows out the back from this dense water out and gets into the dense water treatment procedure in downstream; The product water out of the said first step and second stage reverse osmosis unit (22,24) all is connected with the product pond, and product water A flows out directly entering product pond, back from producing water out, recycles;
Said preprocessing part 1 is connected with the water-in of said first pressure pump 21 with the water outlet of said r-o-part 2 through said hollow-fibre membrane ultra-filtration equipment 15, the security personnel's strainer 3 of also connecting between the said hollow-fibre membrane ultra-filtration equipment 15 and first pressure pump 21.
Said first step reverse osmosis unit 22 comprises the first reverse osmosis membrane section 221 parallel with one another and the second reverse osmosis membrane section 222; Said second stage reverse osmosis unit 24 comprises the 3rd reverse osmosis membrane section 241 parallel with one another and the 4th reverse osmosis membrane section 242.Said first, second, third nuclear the 4th reverse osmosis membrane section (221,222,241 and 242) all has water-in, dense water out and produces water out; The water outlet of said first pressure pump 21 is connected with the water-in of the said first reverse osmosis membrane section 221 and the second reverse osmosis membrane section 222; The dense water out of the said first reverse osmosis membrane section 221 and the second reverse osmosis membrane section 222 is connected with the water-in of said second pressure pump 23; The water outlet of said second pressure pump 23 is connected with the water-in of said the 3rd reverse osmosis membrane section 241 and the 4th reverse osmosis membrane section 242; The dense water out of said the 3rd reverse osmosis membrane section 241 and the 4th reverse osmosis membrane section 242 is connected with follow-up dense water treating equipment; The product water out of the said first, second, third and the 4th reverse osmosis membrane section (221,222,241 and 242) all is connected with the product pond, and the reverse osmosis membrane in the above-mentioned first, second, third and the 4th reverse osmosis membrane section (221,222,241 and 242) all adopts extraordinary industrial reverse osmosis membrane.
The flux of the said first reverse osmosis membrane section 221 is less than the flux of the second reverse osmosis membrane section 222, greater than the flux of the third and fourth reverse osmosis membrane section 241,242; The flow velocity of the said first reverse osmosis membrane section 221 all be lower than said second, third with the flow velocity of the 4th reverse osmosis membrane section 222,241,242.Be that said reverse osmosis system 2 adopts one-level four-part form mode to arrange; Wherein, The first reverse osmosis membrane section 221 adopts big flux, low flow velocity to relate to; The second reverse osmosis membrane section 222 adopts high-throughput, big flow velocity to relate to, and third and fourth (241 and 242) reverse osmosis membrane section adopts small throughput, big flow velocity design.
In the operational process; The acid waste water containing heavy metal of required processing is successively after but preliminary sedimentation tank 11, sand filter 12, former pond 13, highly effective cellulose filtration unit 14, hollow-fibre membrane ultra-filtration equipment 15 and security personnel's strainer 3 are removed hypostasis, swimmer, suspended substance, colloid, fine silt, larger molecular organics and bacterium; Get into first step reverse osmosis unit 23 through first pressure pump 21; Gained produces water and directly gets into the product pond; Recycle, the dense water of gained is through second pressure pump, 22 entering second stage reverse osmosis units 24, and the product water of second stage reverse osmosis unit 24 also is directly to get into to produce the pond; Recycle, dense pond stores or the entering extraction plant carries out the electrodeposition recovery of heavy metal and its dense water that produces gets into.
The above; Be merely the preferred embodiment of the utility model; So can not limit the scope that the utility model is implemented according to this, the equivalence of promptly doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model contains.

Claims (4)

1. the treatment system of an acid waste water containing heavy metal, it is characterized in that: it comprises the r-o-part that acid waste water containing heavy metal is carried out pretreated preprocessing part and pretreated acid waste water containing heavy metal is handled, wherein,
Said preprocessing part comprises preliminary sedimentation tank, sand filter, former pond, Mierocrystalline cellulose filtration unit and the ultra-filtration equipment that is communicated with successively;
Said r-o-partly comprises first pressure pump, first step reverse osmosis unit, second pressure pump and second stage reverse osmosis unit; Wherein, said first step reverse osmosis unit has water-in, dense water out and produces water out, and said second stage reverse osmosis unit has water-in, dense water out and produces water out; The water outlet of said first pressure pump is connected with the water-in of said first step reverse osmosis unit; The dense water out of said first step reverse osmosis unit is connected with the water-in of said second pressure pump; The water outlet of said second pressure pump is connected with the water-in of said second stage reverse osmosis unit, and the dense water out of said second stage reverse osmosis unit is connected with follow-up dense water treating equipment; The product water out of the said first step and second stage reverse osmosis unit all is connected with the product pond;
The water outlet of said ultra-filtration equipment is connected with the water-in of said first pressure pump.
2. the treatment system of a kind of acid waste water containing heavy metal as claimed in claim 1; It is characterized in that: said first step reverse osmosis unit comprises the first reverse osmosis membrane section parallel with one another and the second reverse osmosis membrane section; Said second stage reverse osmosis unit; Comprise the 3rd reverse osmosis membrane section parallel with one another and the 4th reverse osmosis membrane section, the said first, second, third and the 4th reverse osmosis membrane Duan Jun has water-in, dense water out and produces water out; The water outlet of said first pressure pump is connected with the water-in of the said first reverse osmosis membrane section and the second reverse osmosis membrane section; The dense water out of the said first reverse osmosis membrane section and the second reverse osmosis membrane section is connected with the water-in of said second pressure pump; The water outlet of said second pressure pump is connected with the water-in of said the 3rd reverse osmosis membrane section and the 4th reverse osmosis membrane section; The dense water out of said the 3rd reverse osmosis membrane section and the 4th reverse osmosis membrane section is connected with follow-up dense water treating equipment, and the product water out of the said first, second, third and the 4th reverse osmosis membrane section all is connected with the product pond.
3. the treatment system of a kind of acid waste water containing heavy metal as claimed in claim 1 is characterized in that said ultra-filtration equipment is the hollow-fibre membrane ultra-filtration equipment.
4. like the treatment system of the described a kind of acid waste water containing heavy metal of arbitrary claim in the claim 1 to 3, it is characterized in that: the security personnel's strainer of also connecting between the said ultra-filtration equipment and first pressure pump.
CN2012201400991U 2012-04-05 2012-04-05 Processing system of heavy-metal-contained acid wastewater Expired - Lifetime CN202610045U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105731682A (en) * 2014-12-11 2016-07-06 苏州澄江环境科技有限公司 System and method for treating acetic acid-containing wastewater
CN105948351A (en) * 2016-05-16 2016-09-21 神华集团有限责任公司 Water treatment system and method
CN109320012A (en) * 2018-10-26 2019-02-12 首创爱华(天津)市政环境工程有限公司 A kind of municipal sewage system and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105731682A (en) * 2014-12-11 2016-07-06 苏州澄江环境科技有限公司 System and method for treating acetic acid-containing wastewater
CN105948351A (en) * 2016-05-16 2016-09-21 神华集团有限责任公司 Water treatment system and method
CN109320012A (en) * 2018-10-26 2019-02-12 首创爱华(天津)市政环境工程有限公司 A kind of municipal sewage system and method
CN109320012B (en) * 2018-10-26 2021-11-09 首创爱华(天津)市政环境工程有限公司 Municipal sewage treatment system and method

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C14 Grant of patent or utility model
GR01 Patent grant
C53 Correction of patent of invention or patent application
CB03 Change of inventor or designer information

Inventor after: Huang Huaiguo

Inventor after: Chen Jiahong

Inventor after: Zhang Qing

Inventor after: Ji Changqing

Inventor after: Lin Guoqin

Inventor after: Chen Qibin

Inventor after: Qiu Yaoxing

Inventor before: Huang Huaiguo

Inventor before: Zhang Qing

Inventor before: Ji Changqing

Inventor before: Lin Guoqin

Inventor before: Chen Qibin

Inventor before: Qiu Yaoxing

COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: HUANG HUAIGUO ZHANG QING JI CHANGQING LIN GUOQIN CHEN QIBIN QIU YAOXING TO: HUANG HUAIGUO CHEN JIAHONG ZHANG QING JI CHANGQING LIN GUOQIN CHEN QIBIN QIU YAOXING

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20121219