CN202116412U - Recycling system of high salinity refractory organic waste water - Google Patents
Recycling system of high salinity refractory organic waste water Download PDFInfo
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- CN202116412U CN202116412U CN2011202173401U CN201120217340U CN202116412U CN 202116412 U CN202116412 U CN 202116412U CN 2011202173401 U CN2011202173401 U CN 2011202173401U CN 201120217340 U CN201120217340 U CN 201120217340U CN 202116412 U CN202116412 U CN 202116412U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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Abstract
The utility model relates to a recycling system of high salinity refractory organic waste water, which comprises an oil removal unit, a desalting unit, a membrane bioreactor, a middle water tank, a two-stage hoisting pump, a security filter, a reverse osmosis membrane device, a three-stage hoisting pump, a first loop, a recycling water tank and a second loop. The desalting unit comprises a triple-effect evaporator, a first-stage hoisting pump, a centrifugal machine and a condensation liquid collection tank used for collecting condensation liquid produced by the triple-effect evaporator. The security filter, the reverse osmosis membrane device and the three-stage hoisting pump are sequentially connected with the middle water tank. The first loop is used for circulating a part of outlet water of the reverse osmosis membrane device to the water inlet end of the reverse osmosis membrane device. The second loop is used for circulating thick water of the reverse osmosis membrane device to the condensation liquid collection tank. The recycling system is simple in setting, compact in whole structure, small in occupied area, stable in operation, low in processing cost and capable of being used in processing of various kinds of high salinity refractory organic waste water, such as spray coating and paint coating, thereby basically achieving zero emission of waste water.
Description
Technical field
the utility model belongs to technical field of waste water processing, particularly a kind of reclaiming system of high salinity organic wastewater with difficult degradation thereby.
Background technology
The organic waste water that
produce in metal finishing processes such as spraying, plating mainly contains pollutents such as lubricating oil, tensio-active agent, silicate, phosphoric acid salt and carbonate.This type waste water is difficult to biological degradation because of salts contg is high with organism, and becomes one of difficult point and focus of at present domestic and international wastewater treatment.Inorganic salts plays the vital role that promotes enzyme reaction, keeps membrane equilibrium and regulate osmotic pressure in microorganism growth process, but salt concn is too high, can produce microbial growth to suppress, and makes that wastewater treatment biological process commonly used is inapplicable.Membrane bioreactor (MBR) is a kind of new and effective water technology, has traditional method many advantages can't be obtained, can satisfy the strictest in the world at present sewage drainage standard.Membrane bioreactor mainly is made up of bio-reactor and membrane module two portions; Organism in the waste water is through the Degradation of mikrobe in the bio-reactor; Water quality is purified, and the effect of film mainly is that active sludge and larger molecular organics and bacterium etc. are retained in the reactor drum, makes effluent quality reach the quality of reused water requirement; Keep that simultaneously higher sludge concentration is arranged in the reactor drum, quicken the carrying out of biochemical reaction.It is very fast in development in recent years that embrane method is handled waste water, comprise that the processing to city domestic sewage, percolate, trade effluent etc. all has a large amount of reports, and large-scale industrial application is also more.Embrane method is handled waste water, and not only treatment effect is good, can also reclaim some valuable compositions in the waste water.When handling the electroplating wastewater of nickel plating with embrane method; Can carry out reuse to nickel ion and water; Wastewater discharge and pollution level not only significantly reduce, and the nickel ion of reuse has higher economic value and reduce water consumption, can reclaim the cost of sewage treatment equipment within a short period of time.Though Membrane Bioreactor for Wastewater Treatment waste water effect is better, when adopting Membrane Bioreactor for Wastewater Treatment waste water, also exist following problem to need to be resolved hurrily: system's oxygen requirement is big, and energy consumption is high; The accumulation of recalcitrant substance causes the murder by poisoning of mikrobe and the pollution of film easily; The membrane module price comparison is expensive.Wherein, the pollution of high energy consumption and film is to influence the major obstacle that membrane bioreactor promotes the use.Because the power consumption values and the membrane flux of MBR system, the film pollution situation, the mud degree, aeration rate, system scale, the type selecting of pump and flow scheme design all have relation, therefore, cut down the consumption of energy to pay special attention to lectotype selection rationally and the optimization of flow scheme design.
as stated; The content of salt is very high in the organic waste water that in metal finishing processes such as spraying, plating, produces; And contain a lot of hardly degraded organic substances; These pollutents all can cause murder by poisoning to the mikrobe in the membrane bioreactor, cause the processing cost increase and influence water treatment effect.Effectively solution or reduction membrane bioreactor are applied to existing film pollution of this type of high salinity organic wastewater with difficult degradation thereby and high energy consumption problem, and be significant for the processing of high salinity organic wastewater with difficult degradation thereby.
Summary of the invention
the utility model technical problem to be solved is the deficiency that overcomes prior art, and a kind of reclaiming system that is exclusively used in the high salinity organic wastewater with difficult degradation thereby is provided, and it is stable, and running cost is low.
For solving above technical problem, the utility model is taked following technical scheme:
The reclaiming system of
a kind of high salinity organic wastewater with difficult degradation thereby, it comprises the oil removal unit, it comprises wastewater collection pond and the oil header that communicates with the top in wastewater collection pond; The unit desalts; It comprises triple-effect evaporator, is used for waste water with the wastewater collection pond and is driven into one-level lift pump in the triple-effect evaporator, is used for phlegma collecting tank that the crystallization liquid concentrator that triple-effect evaporator produces is carried out the whizzer of centrifuge dehydration and is used for the phlegma that triple-effect evaporator produces is collected; Membrane bioreactor, its water-in communicates with the phlegma collecting tank, and water outlet connects an intermediate water tank; Be used for the water of phlegma collecting tank is pumped into the two-stage hoisting pump in the membrane bioreactor; The security personnel's strainer and the reverse osmosis membrane equipment that are connected successively with intermediate water tank; Be used for the water of intermediate water tank is pumped into three grades of lift pumps in security personnel's strainer and the reverse osmosis membrane equipment; Be used for the part of the water outlet of reverse osmosis membrane equipment is looped back first loop of the feed-water end of said reverse osmosis membrane equipment; The reuse water tank of remainder that is used for the water outlet of the said permeable membrane of splendid attire system; And second loop that is used for the dense water cycle of said reverse osmosis membrane equipment is returned said phlegma collecting tank.
are according to the further embodiment of the utility model: said reclaiming system also comprises the vacuum primingpump that is used for the water outlet of said membrane bioreactor is pumped into intermediate water tank.Said membrane bioreactor adopts the hollow-fibre membrane of vinylidene material.Said reverse osmosis membrane equipment adopts the polymeric amide anti-pollution reverse osmosis membrane.
Because the enforcement of above technical scheme, the utility model compared with prior art has following advantage:
The reclaiming system of
the utility model makes organic waste water pass through oil removal successively; Triple effect evaporation, membrane bioreactor, security personnel filter and reverse-osmosis treated; The desalination rate is more than 99.9%; The COD clearance is more than 99%, and the effluent quality index reaches enterprise production water water quality standard, can realize wastewater zero discharge basically.In addition, the utility model is provided with simply, and the compact floor space of whole plant is little, stable, and processing cost is low, can be widely used in spraying, the processing of all kinds of high salinity organic wastewater with difficult degradation thereby such as application.
Description of drawings
Below in conjunction with accompanying drawing and concrete embodiment, the utility model is done further detailed explanation:
Fig. 1 is the synoptic diagram according to the reclaiming system of the high salinity organic wastewater with difficult degradation thereby of the utility model;
wherein: 1, wastewater collection pond; 2, triple-effect evaporator; 3, one-level lift pump; 4, whizzer; 5, phlegma collecting tank; 6, membrane bioreactor; 7, intermediate water tank; 8, security personnel's strainer; 9, reverse osmosis membrane equipment; 10, first loop; 11, reuse water tank; 12, second loop; 13, two-stage hoisting pump; 14, three grades of lift pumps; 15, vacuum primingpump.
Embodiment
show like Fig. 1, comprises the oil removal unit according to the reclaiming system of the high salinity organic wastewater with difficult degradation thereby of present embodiment, and it comprises wastewater collection pond 1 and the oil header (not shown) that communicates with the top in wastewater collection pond 1; The unit desalts; It comprises triple-effect evaporator 2, is used for waste water with wastewater collection pond 1 and is driven in the triple-effect evaporator 2 one-level lift pump 3, is used for phlegma collecting tank 5 that the crystallization liquid concentrator that triple-effect evaporator 2 produces is carried out the whizzer 4 of centrifuge dehydration and is used for the phlegma that triple-effect evaporator 2 produces is collected; Membrane bioreactor 6, its water-in communicates with phlegma collecting tank 5, and water outlet connects an intermediate water tank 7; Be used for the water of phlegma collecting tank 5 is pumped into the two-stage hoisting pump 13 in the membrane bioreactor 6; The security personnel's strainer 8 and the reverse osmosis membrane equipment 9 that are connected successively with intermediate water tank 7; Be used for the water of intermediate water tank 7 is pumped into three grades of lift pumps 14 in security personnel's strainer 8 and the reverse osmosis membrane equipment 9; Be used for the part of the water outlet of reverse osmosis membrane equipment 9 is looped back first loop 10 of the feed-water end of said reverse osmosis membrane equipment 9; The reuse water tank 11 of remainder that is used for the water outlet of the said permeable membrane of splendid attire system 9; And second loop 12 that is used for the dense water cycle of reverse osmosis membrane equipment 9 is returned said phlegma collecting tank 5.
The reclaiming system process of treating waste water of the organic waste water of present embodiment is following:
(1), oil removal pre-treatment: in the wastewater collection pond, utilize the difference of specific gravity of oil and water, collection tube can be collected the oil slick on waste water surface and it is derived outside pond;
(2), triple effect evaporation are handled: the waste water of process step (1) is passed in the triple-effect evaporator to be handled; Handle the gained phlegma and get into subsequent processing; Handle the crystallization liquid concentrator that is produced and carry out centrifuge dehydration again; The clear liquid that centrifuge dehydration produced gets into circulating and evaporating processing in the triple-effect evaporator again, the outer disposal of solid useless committee after the centrifuge dehydration.
(3), Membrane Bioreactor for Wastewater Treatment: step (2) gained phlegma is passed in the membrane bioreactor; Remove organism through the biological metabolism effect; Said membrane bioreactor adopts the hollow-fibre membrane of vinylidene material, and membrane pore size is 0.3 μ m, and membrane flux is preferably greater than 12L/m
2
H, work-ing life was more than or equal to 5 years.Through after this step process, organic clearance reaches 89%～92% in the waste water;
(4), security personnel filter and reverse-osmosis treated: under the pressure-driven; After the water outlet of step (3) membrane bioreactor is at first filtered through security personnel's strainer; Entering into reverse osmosis system separates; Producing water ratio is controlled to be 70%, and reverse osmosis membrane system adopts the polymeric amide anti-pollution reverse osmosis membrane.The part of reverse osmosis system water outlet turns back in the reverse osmosis membrane system through first loop; Another part is recycled; And the dense water of reverse osmosis membrane system loops back the front end of the membrane bioreactor of step (3) again through second loop, carries out step (3) with phlegma and handles.
Adopt above-mentioned reclaiming system that certain spraying factory effluent is carried out sampling analysis, the essential property of its waste water is: CODcr:2800～3660mg/L, pH are 8～10; Silicate content 2%～4%; Carbonate content 5%～10%, surfactant content 1%～2%, waste water generation are 22.4m
3
/ d.After the processing of the utility model reclaiming system, the effluent quality situation is following: CODcr:12～18mg/L, pH are 7～8, Dian Daoshuai< 10 μ scm satisfy this enterprise production process water requirement.The average actual motion expense of this system (admittedly comprising electricity cost+medicament expense usefulness+membrane module replacement charge+useless disposal costs) is about 220 yuan of/ton water.
More than the utility model has been done detailed description; Its purpose is to let the personage that is familiar with this art can understand the content of the utility model and implements; Can not limit the protection domain of the utility model with this; All equivalences of doing according to the spirit of the utility model change or modify, and all should be encompassed in the protection domain of the utility model
Claims (4)
1. the reclaiming system of a high salinity organic wastewater with difficult degradation thereby, it is characterized in that: said reclaiming system comprises the oil removal unit, it comprises wastewater collection pond (1) and the oil header that communicates with the top in said wastewater collection pond (1); The unit that desalts, it comprises triple-effect evaporator (2), be used for waste water with wastewater collection pond (1) is driven into one-level lift pump (3) in the said triple-effect evaporator (2), is used for phlegma collecting tank (5) that the crystallization liquid concentrator that said triple-effect evaporator (2) produces is carried out the whizzer (4) of centrifuge dehydration and is used for the phlegma that said triple-effect evaporator (2) produces is collected; Membrane bioreactor (6), its water-in communicates with said phlegma collecting tank (5), and water outlet connects an intermediate water tank (7); Be used for the water of said phlegma collecting tank (5) is pumped into the two-stage hoisting pump (13) in the said membrane bioreactor (6); The security personnel's strainer (8) and the reverse osmosis membrane equipment (9) that are connected successively with said intermediate water tank (7); Be used for the water of said intermediate water tank (7) is pumped into the three grades of lift pumps (14) in security personnel's strainer (8) and the reverse osmosis membrane equipment (9); Be used for the part of the water outlet of said reverse osmosis membrane equipment (9) is looped back first loop (10) of the feed-water end of said reverse osmosis membrane equipment (9); The reuse water tank (11) of remainder that is used for the water outlet of the said permeable membrane of splendid attire system (9); And second loop (12) that is used for the dense water cycle of said reverse osmosis membrane equipment (9) is returned said phlegma collecting tank (5).
2. the reclaiming system of high salinity organic wastewater with difficult degradation thereby according to claim 1 is characterized in that: said reclaiming system also comprises the vacuum primingpump (15) that is used for the water outlet of said membrane bioreactor (6) is pumped into said intermediate water tank (7).
3. the reclaiming system of high salinity organic wastewater with difficult degradation thereby according to claim 1 is characterized in that: described membrane bioreactor (6) adopts the hollow-fibre membrane of vinylidene material.
4. the reclaiming system of high salinity organic wastewater with difficult degradation thereby according to claim 1 is characterized in that: reverse osmosis membrane equipment (9) adopts the polymeric amide anti-pollution reverse osmosis membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202173401U CN202116412U (en) | 2011-06-24 | 2011-06-24 | Recycling system of high salinity refractory organic waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202173401U CN202116412U (en) | 2011-06-24 | 2011-06-24 | Recycling system of high salinity refractory organic waste water |
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| Publication Number | Publication Date |
|---|---|
| CN202116412U true CN202116412U (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202173401U Expired - Fee Related CN202116412U (en) | 2011-06-24 | 2011-06-24 | Recycling system of high salinity refractory organic waste water |
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| CN (1) | CN202116412U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633386A (en) * | 2012-04-20 | 2012-08-15 | 浙江明泉工业涂装有限公司 | Coating water purification system |
| CN105036494A (en) * | 2015-09-02 | 2015-11-11 | 中国石油集团工程设计有限责任公司 | Earth surface discharge treating system and technology for high-salinity fracturing flowback fluid and gas field water |
-
2011
- 2011-06-24 CN CN2011202173401U patent/CN202116412U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102633386A (en) * | 2012-04-20 | 2012-08-15 | 浙江明泉工业涂装有限公司 | Coating water purification system |
| CN105036494A (en) * | 2015-09-02 | 2015-11-11 | 中国石油集团工程设计有限责任公司 | Earth surface discharge treating system and technology for high-salinity fracturing flowback fluid and gas field water |
| CN105036494B (en) * | 2015-09-02 | 2017-07-07 | 中国石油集团工程设计有限责任公司 | Saliferous fracturing outlet liquid high and gas water surface discharge processing system and technique |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20180624 |
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| CF01 | Termination of patent right due to non-payment of annual fee |