CN102583831A - Wastewater treatment and reusing membrane separation treatment technology - Google Patents
Wastewater treatment and reusing membrane separation treatment technology Download PDFInfo
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- CN102583831A CN102583831A CN2012100600868A CN201210060086A CN102583831A CN 102583831 A CN102583831 A CN 102583831A CN 2012100600868 A CN2012100600868 A CN 2012100600868A CN 201210060086 A CN201210060086 A CN 201210060086A CN 102583831 A CN102583831 A CN 102583831A
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- 239000012528 membrane Substances 0.000 title claims abstract description 21
- 238000000926 separation method Methods 0.000 title claims abstract description 14
- 238000005516 engineering process Methods 0.000 title claims abstract description 11
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000002351 wastewater Substances 0.000 claims abstract description 28
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 14
- 238000001556 precipitation Methods 0.000 claims abstract description 10
- 238000001728 nano-filtration Methods 0.000 claims abstract description 9
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 9
- 230000001105 regulatory Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 19
- 239000004744 fabric Substances 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 238000002203 pretreatment Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 241000894006 Bacteria Species 0.000 claims description 3
- 241000195493 Cryptophyta Species 0.000 claims description 3
- 238000011033 desalting Methods 0.000 claims description 3
- 238000005189 flocculation Methods 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000001471 micro-filtration Methods 0.000 claims description 3
- 230000003472 neutralizing Effects 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 abstract description 8
- 239000010802 sludge Substances 0.000 abstract description 5
- 239000000835 fiber Substances 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000001223 reverse osmosis Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 230000035695 Efflux Effects 0.000 description 1
- 231100000614 Poison Toxicity 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 235000012970 cakes Nutrition 0.000 description 1
- 230000005591 charge neutralization Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910000529 magnetic ferrite Inorganic materials 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000010814 metallic waste Substances 0.000 description 1
- -1 metals ion Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Abstract
The invention relates to a wastewater treatment and reusing membrane separation treatment technology which is characterized by treating heavy metal wastewater by using the pretreatment of 'preformed precipitation + fiber filter + ultrafiltration' and the membrane separation technology of 'nanofiltration + reverse osmosis + mixed bed', so that the treated wastewater can reach the boiler water standards, and equipment and electrified control is beneficial to accurately and safely controlling wastewater treatment equipment. In the invention, the purpose of real wastewater zero emission is realized by the application of the membrane technology, the reuse rate of wastewater reaches 75-80%, the rest wastewater is conveyed back to a regulating pool for continued circular treatment, metal ions are finally transported outwards or reused in the main form of sludge, and the possibility of affecting environment by heavy metal wastewater can be reduced as much as possible.
Description
Technical field
The present invention relates to membrane separation technique, relate in particular to noble metal recovery, precipitate and separate, waste water recycling process, be specially a kind of smelting enterprise Industrial Wastewater Treatment membrane separation process.
Background technology
At present; The countries in the world process for treating heavy-metal waste water mainly contains three types: the first kind is the method that heavy metal ions in wastewater is gone out through the generation chemical reaction, comprises neutralization precipitation method, sulphide precipitation, ferrite coprecipitation method, chemical reduction method, electrochemical reducing and high molecular heavy metals trapping agent method etc.Second type be make in the waste water heavy metal under the condition that does not change its chemical form, adsorb, concentrate, isolating method, comprise absorption, SX, evaporation and freezing method, IX and membrane sepn etc.The 3rd type is the method that heavy metal in the waste water is removed in effect such as the flocculation, absorption, accumulation, enrichment by mikrobe or plant, comprising biofloculation, biochemical process and plant ecological reparation etc.For three above-mentioned class method for distinguishing, the first kind is very strong to the specific aim of heavy metal, if contain in the waste water various heavy then effect weaken obviously, and, cause the secondary pollution of heavy metal easily; The much more loaded down with trivial details troubles of second type treatment scheme; The 3rd type cost is higher, and the cycle of handling is longer, under the situation of handling continuously and handling in a large number, is easy to the phenomenon that treatment effect is declined to a great extent.
Summary of the invention
The technical problem that the present invention solved is to provide a kind of wastewater treatment and reuse membrane separation treating process technology, to solve the shortcoming in the above-mentioned background technology.
The technical problem that the present invention solved adopts following technical scheme to realize:
Wastewater treatment and reuse membrane separation treating process technology; It is the pre-treatment of adopting " pre precipitation+through fabric filter+ultrafiltration " and the membrane separation process of " nanofiltration+r-o-+mix bed "; To the technology that heavy metal wastewater thereby carries out Separation and Recovery and processing, its idiographic flow is following.
1. removal of impurities: waste water carries out precipitation process after oil trap is removed oil purification, removes macrobead foreign material such as sandstone, reduces SS (suspension content in the water quality).
2. filter: the suspended substance that adopts fabric filter to remove in the waste water reaches the particle greater than 1 μ m; Most bacterium, algae, colloidalmaterial and small particulate matter are removed; Carry out continuous Microfiltration again; The SDI value (on behalf of particle in the water, colloid and other, pollution index can block the object content of various water correction plants) that makes water outlet is less than 5.Fiber filter media has characteristics such as anti-strong acid, highly basic in the said fabric filter.
3. membrane sepn: water outlet is through regulating pH value to 6.5 ~ 7.5 after HPP rises to ultrafiltration, the nanofiltration system device carries out desalting treatment.In this process, the principal feature of nf membrane is to realize separating of divalent ion and monovalent ion, holds back bivalent ions performance and is higher than 98%.After cationic exchange is handled, produce water water quality and be superior to the industrial circulate water water quality standard, can be used for industrial cycle water system or other water of productive use.
4. exchange again: the water that will go up after step exchanges is handled through the positive resins exchange of increase after neutralizing treatment system; Rise to security personnel's strainer by pump again and get into r-o-, mixed-bed resin exchange processing again, water outlet this moment can reach middle and high pressure BW standard.
5. reclaim: will go up water outlet after the step process derives to reclaim and uses; To handle remaining dense water centralized collection handles; Add PAM polymeric flocculants such as (SEPIGEL 305s) and flocculate, will precipitate again through chamber-type press filter and handle, the mud outward transport or the recovery of generation.
Because the trade effluent composition of smelting enterprise is complicated, principal pollutant are toxic substances such as Zn, Cd, Pb, As, Hg, and the discharging variation water quality is bigger, how to reduce waste water to contact with human body, stops waste water and effluxes the emphasis that is process choice.In the present invention; Application of membrane realizes the purpose of waste water zero emission truly; Wastewater recycle rate reaches 75% ~ 80%; Residue waste water carries back equalizing tank to continue circular treatment again, and metals ion is mainly transported outward or reuse with sludge form at last, can reduce the possibility of heavy metal wastewater thereby to environmental influence as much as possible.
Beneficial effect:
The membrane separation process of the pre-treatment that the present invention adopts " pre precipitation+through fabric filter+ultrafiltration " and " nanofiltration+r-o-+mix bed "; Make the waste water of handling can reach the BW standard, equipmentization, electrified control help controlling accurately, safely sewage treatment equipment.Wastewater recycle rate reaches 75% ~ 80% in the present invention, can reduce the possibility of heavy metal wastewater thereby to environmental influence as much as possible.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, further set forth in the face of the present invention down.
The membrane separation process of the pre-treatment that the present invention adopts " pre precipitation+through fabric filter+ultrafiltration " and " nanofiltration+r-o-+mix bed " is handled heavy metal wastewater thereby, and idiographic flow is following.
1. removal of impurities: zinc-containing water carries out precipitation process after oil trap is removed oil purification, removes macrobead foreign material such as sandstone, reduces SS (suspension content in the water quality).
2. filter: (concrete parameter is confirmed after by measuring in the change of water quality parameter through the water outlet of removal step; Control with ultrasonic level gage) stable after; Pump to fabric filter by lift pump; The suspended substance of removing in the waste water reaches the particle greater than 1 μ m, and most bacterium, algae, colloidalmaterial and small particulate matter are removed, and carries out continuous Microfiltration again; The SDI value (on behalf of particle in the water, colloid and other, pollution index can block the object content of various water correction plants) that makes water outlet is less than 5.Fiber filter media has characteristics such as anti-strong acid, highly basic in the said fabric filter.
3. membrane sepn: because ultrafiltration and nanofiltration have relatively high expectations to pH value, can subsequent technique after the pH regulator pond is regulated, about adjusting pH value to 7.0 after HPP rises to ultrafiltration, the nanofiltration system device carries out desalting treatment.In this process, the principal feature of nf membrane is to realize separating of divalent ion and monovalent ion, holds back bivalent ions performance and is higher than 98%.After cationic exchange is handled, produce water water quality and be superior to the industrial circulate water water quality standard, can be used for industrial cycle water system or other water of productive use.
4. exchange again: the water that will go up after step exchanges is handled through the positive resins exchange of increase after neutralizing treatment system; Rise to security personnel's strainer by pump again and get into r-o-, mixed-bed resin exchange processing again, water outlet this moment can reach middle and high pressure BW standard.
5. reclaim: will go up water outlet after the step process derives to reclaim and uses; To handle remaining dense water centralized collection handles; Add PAM polymeric flocculants such as (SEPIGEL 305s) and carry out flocculation sediment at sludge thickener; With sludge pump deposition is delivered to chamber-type press filter and advances to handle the mud compression, outward transport or reuse behind the formation sludge cake.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification sheets just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The scope of the claimed invention by the appended claims and their equivalents defined
.
Claims (1)
1. wastewater treatment and reuse membrane separation treating process technology is characterized in that, is the pre-treatment of adopting " pre precipitation+through fabric filter+ultrafiltration " and the membrane separation process of " nanofiltration+r-o-+mix bed ", and heavy metal wastewater thereby is handled, and flow process is following:
1. removal of impurities: waste water carries out precipitation process after oil trap is removed oil purification, removes macrobead foreign material such as sandstone, reduces SS;
2. filter: the suspended substance that adopts fabric filter to remove in the waste water reaches the particle greater than 1 μ m, and most bacterium, algae, colloidalmaterial and small particulate matter are removed, and carries out continuous Microfiltration again, and the SDI value that makes water outlet is less than 5;
3. membrane sepn: water outlet is through regulating pH value to 6.5 ~ 7.5 after HPP rises to ultrafiltration, the nanofiltration system device carries out desalting treatment;
4. exchange again: the water that will go up after step exchanges is handled through the positive resins exchange of increase after neutralizing treatment system, rises to security personnel's strainer by pump again and gets into r-o-, mixed-bed resin exchange processing again;
5. reclaim: will go up water outlet after the step process derives to reclaim and uses, and will handle remaining dense water centralized collection and handle, and adds flocculation agent and flocculates, and will precipitate through chamber-type press filter again and handle, the perhaps recovery of mud outward transport of generation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100600868A CN102583831A (en) | 2012-03-09 | 2012-03-09 | Wastewater treatment and reusing membrane separation treatment technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100600868A CN102583831A (en) | 2012-03-09 | 2012-03-09 | Wastewater treatment and reusing membrane separation treatment technology |
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| Publication Number | Publication Date |
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| CN102583831A true CN102583831A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012100600868A Pending CN102583831A (en) | 2012-03-09 | 2012-03-09 | Wastewater treatment and reusing membrane separation treatment technology |
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| Country | Link |
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| CN (1) | CN102583831A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897944A (en) * | 2012-07-30 | 2013-01-30 | 北京伊普国际水务有限公司 | System for deeply processing difficultly degradable organic waste water |
| CN103172203A (en) * | 2013-03-28 | 2013-06-26 | 南京中电环保股份有限公司 | Pretreatment method of anti-osmosis strong brine |
| CN103523980A (en) * | 2013-10-29 | 2014-01-22 | 中国华电工程(集团)有限公司 | Method and system for high-efficiency recovery of high-salinity mine water |
| CN103629659A (en) * | 2013-12-12 | 2014-03-12 | 碧海舟（北京）石油化工设备有限公司 | Process for producing heat by wastewater and biomass |
| CN103626331A (en) * | 2013-11-08 | 2014-03-12 | 南京中电环保股份有限公司 | Desulfurization wastewater zero discharge treatment device and method |
| CN104891701A (en) * | 2014-03-05 | 2015-09-09 | 天津福润龙科技发展有限公司 | Wastewater purification apparatus and wastewater treatment process |
| CN105923817A (en) * | 2016-05-09 | 2016-09-07 | 南京海益环保工程有限公司 | Oil-containing wastewater treatment technology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1408653A (en) * | 2002-09-24 | 2003-04-09 | 天津大学 | Producing process and technology for electronic grade water by intergrated film process |
| CN101875520A (en) * | 2010-08-10 | 2010-11-03 | 南京师范大学 | Processing method of electroplating wastewater containing cyanogens and chrome |
| CN101935118A (en) * | 2010-08-16 | 2011-01-05 | 刘春喜 | Process for purifying and recycling hot water by membrane method |
| WO2011015041A1 (en) * | 2009-08-07 | 2011-02-10 | 无锡尚德太阳能电力有限公司 | Wastewater treatment method and system using the method |
| US8101083B2 (en) * | 2007-08-20 | 2012-01-24 | Earth Renaissance Technologies, Llc | Pre-treatment reverse osmosis water recovery method for brine retentate metals removal |
| CN102358644A (en) * | 2011-06-28 | 2012-02-22 | 中南大学 | Membrane treatment process for heavy metal waste water generated during PCB production process |
-
2012
- 2012-03-09 CN CN2012100600868A patent/CN102583831A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1408653A (en) * | 2002-09-24 | 2003-04-09 | 天津大学 | Producing process and technology for electronic grade water by intergrated film process |
| US8101083B2 (en) * | 2007-08-20 | 2012-01-24 | Earth Renaissance Technologies, Llc | Pre-treatment reverse osmosis water recovery method for brine retentate metals removal |
| WO2011015041A1 (en) * | 2009-08-07 | 2011-02-10 | 无锡尚德太阳能电力有限公司 | Wastewater treatment method and system using the method |
| CN101875520A (en) * | 2010-08-10 | 2010-11-03 | 南京师范大学 | Processing method of electroplating wastewater containing cyanogens and chrome |
| CN101935118A (en) * | 2010-08-16 | 2011-01-05 | 刘春喜 | Process for purifying and recycling hot water by membrane method |
| CN102358644A (en) * | 2011-06-28 | 2012-02-22 | 中南大学 | Membrane treatment process for heavy metal waste water generated during PCB production process |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102897944A (en) * | 2012-07-30 | 2013-01-30 | 北京伊普国际水务有限公司 | System for deeply processing difficultly degradable organic waste water |
| CN103172203A (en) * | 2013-03-28 | 2013-06-26 | 南京中电环保股份有限公司 | Pretreatment method of anti-osmosis strong brine |
| CN103172203B (en) * | 2013-03-28 | 2014-10-08 | 南京中电环保股份有限公司 | Pretreatment method of anti-osmosis strong brine |
| CN103523980A (en) * | 2013-10-29 | 2014-01-22 | 中国华电工程(集团)有限公司 | Method and system for high-efficiency recovery of high-salinity mine water |
| CN103626331A (en) * | 2013-11-08 | 2014-03-12 | 南京中电环保股份有限公司 | Desulfurization wastewater zero discharge treatment device and method |
| CN103629659A (en) * | 2013-12-12 | 2014-03-12 | 碧海舟（北京）石油化工设备有限公司 | Process for producing heat by wastewater and biomass |
| CN104891701A (en) * | 2014-03-05 | 2015-09-09 | 天津福润龙科技发展有限公司 | Wastewater purification apparatus and wastewater treatment process |
| CN105923817A (en) * | 2016-05-09 | 2016-09-07 | 南京海益环保工程有限公司 | Oil-containing wastewater treatment technology |
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Application publication date: 20120718 |