CN101525191A - Coking wastewater membrane method treating process - Google Patents
Coking wastewater membrane method treating process Download PDFInfo
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- CN101525191A CN101525191A CN200910064722A CN200910064722A CN101525191A CN 101525191 A CN101525191 A CN 101525191A CN 200910064722 A CN200910064722 A CN 200910064722A CN 200910064722 A CN200910064722 A CN 200910064722A CN 101525191 A CN101525191 A CN 101525191A
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Abstract
The invention relates to a coking wastewater membrane method treating process which can effectively solve the problems of the existing coking wastewater treatment such as large floor area, high cost, complex operation, low treating efficiency, high energy consumption and poor comprehensive recycling effect. The technical proposal for solving the problems are that: large suspended substances in the coking wastewater are filtered, heavy oil and light oil are separated, fine filtration is carried out for removing particle impurities with more than 0.1mum, pH value is adjusted, a first-grade membrane treatment is carried out to the coking wastewater after being treated, and then a second and a third grade membrane treatments are carried out for removing phenols materials in freshwater, the freshwater after being treated by the third grade membrane treatment is treated by a fourth grade, and the freshwater after the fourth grade treatment is filtered, sterilized and recycled for realizing comprehensive utilization of the coking wastewater. The treating process has the advantages of high efficiency, energy saving, easy operation and use, environment pollution reduction and low cost, therefore, the process can effectively solve the treatment of the coking wastewater and has great economic and social benefits.
Description
One, technical field
The present invention relates to wastewater treatment, particularly a kind of coking wastewater membrane method treating process.
Two, background technology
The processing of coking industry waste discharge is a difficult problem in producing always, the wastewater treatment difficulty is big, environmental pollution is serious, present employed equipment and treatment process floor space are big, the cost height, complicated operation, processing efficiency is low, the energy consumption height, the comprehensive reutilization weak effect, along with science and technology development, the abreast of the times far from requirement of coking waste water treatment process of existing coking industry, membrane separation technique is contemporary new and effective isolation technique at present, be the product of multidisciplinary intersection, with traditional separation method comparison, it has efficiently, energy-conservation, process is easily controlled, no phase change, easy to operate, be beneficial to all compositions in recycle-water and the water, save the energy, environmental friendliness, be convenient to amplify, be easy to and advantage such as other technologies are integrated.So, can be with the processing of application of membrane separation technology in coking chemical waste water? so far do not see open report is arranged.
Three, summary of the invention
At above-mentioned situation, for overcoming the prior art defective, the present invention's purpose just provides a kind of coking wastewater membrane method treating process, can solve effectively that floor space is big in the existing Treatment of Coking Effluent, cost is high, complicated operation, processing efficiency is low, the energy consumption height, the problem of comprehensive reutilization weak effect, the technical scheme of its solution are that the present invention is realized by following steps:
1, coarse filtration, pre-treatment and smart filter: at first by the big suspended substance of particle diameter in the grid elimination coking chemical waste water greater than 5 μ m, remove heavy oil and light oil in the coking chemical waste water by oily water separating equipment again, collect heavy oil and light oil, recycle or focus on, coking chemical waste water after the oil removing is removed suspended impurity in the coking chemical waste water (comprising remaining suspended substance and part colloid thing) through the filter screen pre-filtering, again with the smart filter of smart filter equipment, smart filter divides three utmost points, filtering accuracy is followed successively by 5 μ m, 1 μ m, 0.1 μ m, remove the granule foreign of particle diameter greater than 0.1 μ m at last, adding NaOH aqueous solution accent pH value is 10.5-11.5, the coking chemical waste water after must handling;
2, the one-level film is handled: the coking chemical waste water after the processing carries out the one-level film to be handled, handle molecular weight greater than 300 organism and water sepn through the one-level film, form the dense water after one-level is handled fresh water and one-level processing, fresh water enters the one-level fresh-water tank, and dense water enters the once dense water tank of one-level, further separate through dense water one-level film again, get fresh water, enter the one-level fresh-water tank, before a dense water part is back to the one-level film, after the dense water that another part concentration is big enters the dense water tank of secondary, recovery of oil in the dense water or burning;
Said fresh water and dense water are meant that membrane sepn is a physical process, and the selection perviousness by film is with the larger molecular organics in the former water (coking chemical waste water) such as oils, phenols and small-molecule substance such as the water sepn both sides at film.One side is rich in larger molecular organics, and is dense, is the former water after concentrating, and is called as dense water, can reclaim valuable organism wherein, as phenols and ammonia nitrogen class material; One side is the former water that filters out principal pollutant, and organic content reduces greatly, is mainly water and sees through the easy biochemical organism of small molecules etc. of film, is called as fresh water, but by reuse after the biochemical treatment (as follows).
3, secondary, three grades of films are handled: it is 7-8 that the fresh water after handling from the one-level film adds NaOH accent pH value, entering the secondary film again handles, through the secondary membrane sepn, dense water after being separated into two utmost points and handling and the fresh water after the second-stage treatment, fresh water enters the secondary fresh-water tank, contains molecular weight and enters the dense water tank of secondary greater than 100 dense water, dense water after the second-stage treatment enters dense water secondary film, get fresh water through dense water secondary membrane sepn and be back to the one-level fresh-water tank, the phenol in the dense water reclaims or burns, and secondary fresh water adds H
2SO
4After transferring pH value to be 3-4, carry out three grades of films and handle, under the situation of pressure 6-8MPa, handle through three grades of films, further remove the aldehydes matter in the fresh water of secondary film processing back, fresh water enters three grades of fresh-water tanks, and dense water enters three grades of dense water tanks;
4, the level Four film is handled: the fresh water that gets after three grades of films are handled enters the level Four film and handles, handle through the level Four membrane sepn, dense water enters dense water treatment level Four film, become dense water section to be back in three grades of fresh water through dense water treatment level Four membrane sepn, fresh water is back in the level Four fresh water, and the ammonia nitrogen that obtains from the level Four film is handled reclaims or burns, the fresh water after the level Four film is handled after filtration, sterilization, reuse realizes the comprehensive utilization of coking chemical waste water.
Efficient, energy-conservation, the easy to operate use of the present invention is beneficial to the effective constituent that reclaims in the coking chemical waste water, reduces environmental pollution, and cost is low, can effectively solve the processing of coking chemical waste water, has huge economic and social benefit.
Four, description of drawings
Accompanying drawing is a process flow sheet of the present invention.
Five, embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated.
Provided by accompanying drawing, the present invention is realized by following concrete steps:
1, coking chemical waste water is carried out coarse filtration: method is, before the oil removing equalizing tank, grid is set, particle diameter in the coking chemical waste water is held back greater than the big suspended substance of 5 μ m, avoid dirty plugging road valve, pumping set, guarantee that the subsequent disposal facility normally moves, coking chemical waste water enters in the oil removing equalizing tank after the grid removal of impurities, remove heavy oil and light oil in the waste water through the oil removing equalizing tank, the recyclable utilization or focus on after collecting of heavy oil and light oil, the coking chemical waste water that comes out from the oil removing equalizing tank enters film separating system removal ammonia nitrogen, and COD (chemical oxygen demand COD is chemically to measure the amount that needs oxidized reducing substances in the water sample, water sample under certain condition, amount with the oxygenant that reducing substances was consumed in the oxidation 1 premium on currency sample is an index, after the folding Pang becomes every premium on currency sample all oxidized, the milligram number of the oxygen that needs, represent with mlg/L, it has reflected the degree that polluted by reducing substances, this index is also as one of overall target of organism relative content, the COD value is high more, organic pollutant pollutes heavy more in the expression water), reclaim phenols;
The oil removing equalizing tank plays the effect of regulating the waste water quality water yield simultaneously, prevents that the variation of the waste water quality water yield that produces in the production process from causing the impact that can't load to Sewage treatment systems;
The other accident pool that is provided with of oil removing equalizing tank, overhaul of the equipments or operation troubles, when water quality and quantity is unusual, sewage can be stored in accident pool temporarily, guarantees that waste water does not efflux;
The water outlet of oil removing equalizing tank continues to handle by the subsequent film separation system, not only can reduce wastewater through organic matter content, improves biodegradability, can also make the valuable organic substance (oils and phenol) in the waste water obtain concentrated the recovery;
2, to the coking chemical waste water pre-treatment after the coarse filtration: method is, adopt the fine sand strainer, main effect is suspended substance and the part colloidalmaterial of removing in the water, backwash water is through post precipitation, supernatant liquor returns the oil removing equalizing tank, throw out press filtration afterfire is handled, behind the oil removing equalizing tank, still have suspended impurity in the water, when these solid impurities enter the slight void that the upper strata filtrate of strainer forms, because of being subjected to machinery obstruction and adsorption are trapped in strainer by filtrate upper layer, simultaneously, these solid matters that are trapped overlap again and bridging action each other, form filtration membrane just as the surface at filtering layer, continue the solid impurity in the filtered water, remove the turbidity and the suspended solids of excess in proper order, guarantee film system influent quality;
3, pretreated coking chemical waste water is carried out the essence filter: the same pre-filtrating equipment of the main effect of smart filter, in order to remove granule foreign and partial organic substances, for film separating system provides the fine water inlet, to alleviate the load of subsequent film, method is, carry out the essence filter with accurate filter, the accurate filter shell is that stainless steel is made, and filter core is that line twines filter core, fixes for flange between cylindrical shell and the end socket, filter core is replaceable, very convenient, smart filter divides three grades to carry out by renew cartridge more, and filtering accuracy is followed successively by 5 μ m, 1 μ m, 0.1 μ m, remove the granule foreign of particle diameter greater than 0.1 μ m behind three-stage filtration, the filter element filtering velocity is 8m
3/ m
2H removes materials such as granule foreign, colourity, turbidity, solubility organic pollutant, low molecule organic matter, holds back the mechanical impurity that may reveal in front-end system and the equipment, prevents that particulate material is stifled to the dirt of film and pump assembly, the normal steady running of assurance system; After the adding of the coking chemical waste water behind 5 μ m, 1 μ m, 0.1 μ m three-stage filtration NaOH transfers pH value to be 11, enter the one-level film again and handle;
4, the one-level film is handled: the one-level film is to adopt semi-permeable membranes, can be with molecular weight greater than 300 organism and water sepn, method is, coking chemical waste water after the one-level semi-permeable membranes is with three-stage filtration is separated into dense water and fresh water (dense water and light implication are with described in the content three of the present invention), fresh water enters the one-level fresh-water tank, dense water carries out dense water one-level film (dense water one-level film is with the one-level semi-permeable membranes) through the dense water tank of one-level to be handled, isolate fresh water and dense water again, fresh water enters the one-level fresh-water tank, dense water enters the dense water tank of secondary, wherein, a part of concentrate recirculation to the one-level film, recovery of oil or burning in the dense water of another part;
Find out by above-mentioned, the one-level film is handled a kind of functional semi-permeable membranes that just allows solvent molecule or some low molecular weight solutes or low price ion to see through, can be with molecular weight greater than 300 organism and water sepn, in Treatment of Coking Effluent, it can be retained in phenols in the former water the dense water side of film, and with its concentrated decrement, the dense water after concentrating can be done the phenol recycling and reach zero release; The fresh water that sees through film still contains the small part phenols, needs to concentrate by further processing of second stage film, handles the dense water in back and contains higher phenol, can reclaim or burn;
The very big feature of one-level film is that membrane body has electric charge, the major reason of this to be it still have under low pressure very higher organic matter removal performance.The one-level film can be used for removing organism and colourity, and the useful matter in enriching food and the separation medicine etc. play an important role in the valuable organic substance recovery of trade effluent technology;
5, the secondary film is handled: the one-level fresh water after being handled by the one-level film is handled (the secondary film also is to adopt semi-permeable membranes) from the one-level fresh-water tank through the secondary film, one-level fresh water is divided into dense water and fresh water, dense water enters dense water secondary film through the dense water tank of secondary and handles, dense water secondary film becomes fresh water and dense water with the dense water sepn of secondary, phenol reclaims or burns in the dense water, the fresh water that fresh water that the secondary membrane sepn comes out and dense water secondary membrane sepn come out enters the secondary fresh-water tank, through adding H
2SO
4After transferring pH value to be 3.5, carry out three grades of films and handle;
The secondary film is aperture≤10 * 10
-10The film of the semipermeability matter of m, its separate object is to be in the inorganics of ionic condition and the organism of the overwhelming majority in the solution, can be with molecular weight greater than 100 rejection to organics in dense water side, and it is further concentrated decrement by Circulation, mix laggard phenol recovery system with the dense water of secondary film and reclaim aldehydes matter; See through fresh water COD value behind the secondary film well below (promptly handling preceding COD value is 7000-8000mg/L, fresh water COD value behind the secondary film is 1000-2000mg/L) preceding coking chemical waste water (being called for short former water) is untreated, and biodegradability strengthens, can be by the biochemical action easy biochemical organism in the fresh water of degrading;
The secondary film is to utilize this physical phenomenon of infiltration to realize isolating.To two kinds of water that contain different concns salt, separate with a film with semipermeability matter, can find that the water on one side that salt concentration is low can see through membrane permeation to the high one side of salt concentration, but the salinity that it contained and impermeable.So little by little merge till the salt concentration on both sides equates.The process of osmosis of nature is very long.In order to accelerate this fusion process, can increase a pressure in high water one side of saltiness, pressure is 2-3MPa, allows infiltration stop, the seepage water pressure of Here it is film.Pressure is strengthened, water just can inverse osmosis again, and then salinity stays, and this has just formed the desalination principle of three grades of films.I.e. in water salty (Ru Yuanshui), in addition bigger than naturally osmotic pressure pressure carries out infiltration round about, and the water molecules in the former water is pressed onto the other side of film, becomes clean water, thereby reaches the purpose of removing salinity in the water;
The major function of secondary film is further to remove the aldehydes matter that contains in the water outlet of one-level film, thereby makes its minimizing, and fresh water enters three grades of films and handles, and dense water carries out the recovery or the burn processing of phenol;
6, three grades of films are handled: three grades of films are aperture≤10 * 10
-10The film of the semipermeability matter of m, its principle of work is the same with the secondary film, just the operating pressure ratio of three grades of films is higher, operating pressure is between 6-8MPa, three grades of films can under high pressure further be removed the aldehydes matter that still contains in the water outlet of secondary film, three grades of films processing make the fresh water after the processing of secondary film be separated into three grades of films processing fresh water and three grades of films are handled dense water, thereby it is further concentrated, reach minimized, the purpose of minimizing, three grades of film fresh water enter the level Four film and handle ammonia nitrogen, and dense water reclaims or burning disposal, reclaim three grades of films and handle dense water, three grades of films are handled fresh water and are entered the processing of level Four film:
7, the level Four film is handled: the level Four film is aperture≤10 * 10
-10The film of the semipermeability matter of m, its principle of work is the same with the secondary film, and different is that the level Four film is to work (because add in the fresh water after the secondary film is handled H to be arranged under acidic conditions
2SO
4The step of seing before), purpose is in order to remove the ammonia nitrogen in the former water, also further remove COD simultaneously, thereby fresh water is further purified, the fresh water water outlet of level Four film reaches the reuse requirement, enter the reclaiming system reuse, dense water reclaims or burning disposal, and concrete grammar is, the fresh water that comes out from three grades of fresh-water tanks adds NaOH transfer pH value to be 7.5 after, carry out the level Four film and handle, the fresh water after the processing of level Four film will add NaOH is divided into level Four film processing fresh water and the level Four film is handled dense water, and the fresh water after the level Four film is handled enters the level Four fresh-water tank, dense water after the level Four film is handled enters the dense water tank of level Four, handle through dense water level Four film, be divided into dense water section, fresh water part and ammonia nitrogen part, dense water section is back to three grades of fresh-water tanks, fresh water is partly refluxed to the level Four fresh-water tank, and ammonia nitrogen reclaims or burns;
8, rearmounted filtration, sterilization: the fresh water after the level Four film is handled, after post-filter filters, remove dissolved organic matter, guarantee that water outlet COD value is 30-50mg/L, the ammonia nitrogen value is less than 15mg/L, guarantee that water outlet reaches the reuse requirement, exist a large amount of mean pore sizes in the post-filter filtration medium 2 * 10
-3-5 * 10
-3The micropore of μ m and hole, this constructional feature make its surface adsorption area can reach 500-2000m
2/ g is because most of organic molecular diameter is 2 * 10
-3-5 * 10
-3μ m, so post-filter is the most effective to organic absorption, whole coking waste water treatment process is promptly finished in the fresh water reuse after sterilizing after rearmounted the filtration;
9, the cleaning of film: film mainly cleans with alkaline cleaner after polluting, scavenging solution is repeatedly reusable, and it is the higher organic solution of a kind of concentration ratio, after treating to use, can mix acts as a fuel in coal burns, and the cleaning of film is mainly adopted the common per tour of on-line auto-cleaning once.
It is to be noted that used equipment in above-mentioned technology all is commercially available existing installations, all can buy, just form art breading equipment among the present invention with them from market.
Beneficial effect of the present invention is:
1) great advantage of embrane method Treatment of Wastewater in Coking is the higher organic principle of value in the recyclable sewage (phenols, oils), the water after the processing reaches the industrial cycle water quality standard, can reuse. Enterprise is wanted to sewage The target of benefit is achieved, and has reached the purpose of output increasing and pollution minimizing. This is that biochemical treatment is beyond one's reach.
2) embrane method process be different from traditional biochemical processing process be also advantageous in that this process equipment is simple, account for The ground area is little, for enterprise has saved a large amount of land resource.
3) this technique waste water complicated, organic substance kind are sometimes up to kind surplus tens, partial organic substances Microorganism is had stronger inhibitory action, be unfavorable for biochemical treatment, membrane separation technique does not then have the limit of this respect System can be used as biochemical front treatment process.
4) embrane method is processed the investment instant effect, and short-term is with regard to recyclable investment.
5) this technology can realize fully automatic operation, and the operation operation is simple and convenient.
6) adopt this technology to also have the advantages such as construction period weak point.
In a word, the present invention adopts membrane separation technique technology, and membrane separation technique technology is simple, and fresh water obtains In the time of reuse, can also reclaim the materials such as phenols and ammonia nitrogen, economic benefit and social benefit are huge.
Claims (3)
1, a kind of coking wastewater membrane method treating process is characterized in that, is realized by following steps:
(1), coarse filtration, pre-treatment and smart filter: at first by the big suspended substance in the grid elimination coking chemical waste water, remove heavy oil and light oil in the coking chemical waste water by oily water separating equipment again, collect heavy oil and light oil, recycle or focus on, coking chemical waste water after the oil removing is removed suspended impurity in the coking chemical waste water through the filter screen pre-filtering, again with the smart filter of smart filter equipment, smart filter divides three utmost points, filtering accuracy is followed successively by 5 μ m, 1 μ m, 0.1 μ m, remove the granule foreign of particle diameter greater than 0.1 μ m at last, adding NaOH aqueous solution accent pH value is 10.5-11.5, the coking chemical waste water after must handling;
(2), the one-level film is handled: the coking chemical waste water after the processing carries out the one-level film to be handled, handle molecular weight greater than 300 organism and water sepn through the one-level film, form the dense water after one-level is handled fresh water and one-level processing, fresh water enters the one-level fresh-water tank, dense water enters the once dense water tank of one-level, further separate through dense water one-level film again, get fresh water, enter the one-level fresh-water tank, before a dense water part is back to the one-level film, after the dense water that another part concentration is big enters the dense water tank of secondary, recovery of oil in the dense water or burning;
(3), secondary, three grades of films are handled: it is 7-8 that the fresh water after handling from the one-level film adds NaOH accent pH value, entering the secondary film again handles, through the secondary membrane sepn, dense water after being separated into two utmost points and handling and the fresh water after the second-stage treatment, fresh water enters the secondary fresh-water tank, contains molecular weight and enters the dense water tank of secondary greater than 100 dense water, dense water after the second-stage treatment enters dense water secondary film, get fresh water through dense water secondary membrane sepn and be back to the one-level fresh-water tank, the phenol in the dense water reclaims or burns, and secondary fresh water adds H
2SO
4After transferring pH value to be 3-4, carry out three grades of films and handle, under the situation of pressure 6-8MPa, handle through three grades of films, further remove the aldehydes matter in the fresh water of secondary film processing back, fresh water enters three grades of fresh-water tanks, and dense water enters three grades of dense water tanks;
(4), the level Four film is handled: the fresh water that gets after three grades of films are handled enters the level Four film and handles, handle through the level Four membrane sepn, dense water enters dense water treatment level Four film, become dense water section to be back in three grades of fresh water through dense water treatment level Four membrane sepn, fresh water is back in the level Four fresh water, and the ammonia nitrogen that obtains from the level Four film is handled reclaims or burns, the fresh water after the level Four film is handled after filtration, sterilization, reuse realizes the comprehensive utilization of coking chemical waste water.
2, coking wastewater membrane method treating process according to claim 1 is characterized in that, is realized by said following steps:
(1), coking chemical waste water is carried out coarse filtration: method is, before the oil removing equalizing tank, grid is set, particle diameter in the coking chemical waste water is held back greater than the big suspended substance of 5 μ m, coking chemical waste water enters in the oil removing equalizing tank after the grid removal of impurities, remove heavy oil and light oil in the waste water through the oil removing equalizing tank, the recyclable utilization or focus on after collecting of heavy oil and light oil, the coking chemical waste water that comes out from the oil removing equalizing tank enters film separating system and removes ammonia nitrogen, reclaims phenols;
(2), to the coking chemical waste water pre-treatment after the coarse filtration: method is, adopts the fine sand strainer, removes suspended substance and part colloidalmaterial in the water, and backwash water is through post precipitation, and supernatant liquor returns the oil removing equalizing tank, and throw out press filtration afterfire is handled;
(3), pretreated coking chemical waste water is carried out the essence filter: method is, carry out the essence filter with accurate filter, the accurate filter shell is that stainless steel is made, filter core is that line twines filter core, fix for flange between cylindrical shell and the end socket, smart filter divides three grades to carry out by renew cartridge more, and filtering accuracy is followed successively by 5 μ m, 1 μ m, 0.1 μ m, remove the granule foreign of particle diameter greater than 0.1 μ m behind three-stage filtration, the filter element filtering velocity is 8m
3/ m
2H removes granule foreign, colourity, turbidity, solubility organic pollutant, low molecule organic matter, after the adding of the coking chemical waste water behind 5 μ m, 1 μ m, 0.1 μ m three-stage filtration NaOH transfers pH value to be 11, enters the one-level film again and handles;
(4), the one-level film is handled: the one-level film is to adopt semi-permeable membranes, can be with molecular weight greater than 300 organism and water sepn, method is that the coking chemical waste water after the one-level semi-permeable membranes is with three-stage filtration is separated into dense water and fresh water, fresh water enters the one-level fresh-water tank, dense water carries out dense water one-level film through the dense water tank of one-level to be handled, and isolates fresh water and dense water again, and fresh water enters the one-level fresh-water tank, dense water enters the dense water tank of secondary, wherein, a part of concentrate recirculation to the one-level film, recovery of oil or burning in the dense water of another part;
(5), the secondary film is handled: the secondary film is aperture≤10 * 10
-10The film of the semipermeability matter of m, handle through the secondary film from the one-level fresh-water tank by the one-level fresh water after the processing of one-level film, one-level fresh water is divided into dense water and fresh water, dense water enters dense water secondary film through the dense water tank of secondary and handles, and in the pressurization of secondary film influent side, pressure is 2-3MPa, dense water secondary film becomes fresh water and dense water with the dense water sepn of secondary, phenol reclaims or burns in the dense water, and the fresh water that fresh water that the secondary membrane sepn comes out and dense water secondary membrane sepn come out enters the secondary fresh-water tank, through adding H
2SO
4After transferring pH value to be 3.5, carry out three grades of films and handle;
(6), three grades of films are handled: three grades of films are aperture≤10 * 10
-10The film of the semipermeability matter of m, operating pressure is 6-8MPa, three grades of films can under high pressure further be removed the aldehydes matter that still contains in the water outlet of secondary film, three grades of films processing make the fresh water after the processing of secondary film be separated into three grades of films processing fresh water and three grades of films are handled dense water, thereby it is further concentrated, reach minimized, the purpose of minimizing, three grades of film fresh water enter the level Four film and handle ammonia nitrogen, dense water reclaims or burning disposal, reclaim three grades of films and handle dense water, three grades of films are handled fresh water and are entered the processing of level Four film;
(7), the level Four film is handled: the level Four film is aperture≤10 * 10
-10The film of the semipermeability matter of m, method is, the fresh water that comes out from three grades of fresh-water tanks adds NaOH transfer pH value to be 7.5 after, carrying out the level Four film handles, fresh water after the processing of level Four film will add NaOH is divided into level Four film processing fresh water and the level Four film is handled dense water, fresh water after the level Four film is handled enters the level Four fresh-water tank, dense water after the level Four film is handled enters the dense water tank of level Four, handle through dense water level Four film, be divided into dense water section, fresh water part and ammonia nitrogen part, dense water section is back to three grades of fresh-water tanks, and fresh water is partly refluxed to the level Four fresh-water tank, and ammonia nitrogen reclaims or burns;
(8), rearmounted filtration, sterilization: the fresh water after the level Four film is handled, after post-filter filtered, the mean pore size of post-filter filtration medium was 2 * 10
-3-5 * 10
-3The micropore of μ m and hole, surface adsorption area are 500-2000m
2/ g removes dissolved organic matter, makes water outlet COD value be 30-50mg/L, and the ammonia nitrogen value is less than 15mg/L, and whole coking waste water treatment process is promptly finished in the fresh water reuse after sterilizing after rearmounted the filtration.
3, coking wastewater membrane method treating process according to claim 2 is characterized in that, said oil removing equalizing tank is other an accident pool, overhaul of the equipments or operation troubles, when water quality and quantity is unusual, and sewage is stored in accident pool temporarily, and waste water does not efflux.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204603A (en) * | 2012-01-11 | 2013-07-17 | 中国海洋石油总公司 | Coal gasification wastewater processing method |
| CN103755079A (en) * | 2014-02-21 | 2014-04-30 | 河南洁源膜分离科技有限公司 | Sewage treatment method for production of refined cotton |
| CN107115793A (en) * | 2017-05-15 | 2017-09-01 | 杭州瑞纳膜工程有限公司 | A kind of purifying concentration systems and method for the liquid of lithium containing magnesium |
| CN108613200A (en) * | 2018-06-29 | 2018-10-02 | 宝武集团环境资源科技有限公司 | For pretreatment system and its method before rolling system oily waste liquor incineration disposal |
| CN109516589A (en) * | 2017-09-20 | 2019-03-26 | 清华大学 | A kind of technique of embrane method processing coking wastewater |
| CN111417597A (en) * | 2017-11-20 | 2020-07-14 | Ihi 运搬机械株式会社 | Water treatment method and apparatus |
-
2009
- 2009-04-27 CN CN2009100647222A patent/CN101525191B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204603A (en) * | 2012-01-11 | 2013-07-17 | 中国海洋石油总公司 | Coal gasification wastewater processing method |
| CN103755079A (en) * | 2014-02-21 | 2014-04-30 | 河南洁源膜分离科技有限公司 | Sewage treatment method for production of refined cotton |
| CN103755079B (en) * | 2014-02-21 | 2015-03-04 | 河南洁源膜分离科技有限公司 | Sewage treatment method for production of refined cotton |
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| CN108613200B (en) * | 2018-06-29 | 2024-03-12 | 宝武集团环境资源科技有限公司 | Pretreatment system and pretreatment method for oil-containing waste liquid of steel rolling system before incineration disposal |
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