CN104445815A - Technological method and device for semi-coke production wastewater resource utilization - Google Patents

Technological method and device for semi-coke production wastewater resource utilization Download PDF

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CN104445815A
CN104445815A CN201410675578.7A CN201410675578A CN104445815A CN 104445815 A CN104445815 A CN 104445815A CN 201410675578 A CN201410675578 A CN 201410675578A CN 104445815 A CN104445815 A CN 104445815A
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waste water
oil
water
separator
ammonia
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CN104445815B (en
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毛少祥
毕可军
孟鹏
闫杰栋
李振东
张庆
王瑞
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SHAANXI HUAXIANG ENERGY TECHNOLOGY GROUP Co Ltd
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SHAANXI HUAXIANG ENERGY TECHNOLOGY GROUP Co Ltd
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Abstract

The invention discloses a technological method and device for semi-coke production wastewater resource utilization. The technological method comprises three steps, namely deep oil-water separation, high-efficiency complexing extraction dephenolization and ammonia stilling, to be specific, firstly, separating and recycling a part of coal tar from wastewater when the wastewater passes through an oil partitioning tank, recycling coal tar in a precision filter and an oil-water separator in sequence after discharged water passes through a coarse filter; feeding the oil-removed semi-coke wastewater and an extraction agent into an extraction tower for extraction and dephenolization, feeding the extract phase and a sodium hydroxide solution into a reverse extraction tower for countercurrent contact reverse extraction, feeding an obtained sodium phenolate solution into an acidification kettle, and adding sulfuric acid for acidification to obtain crude phenol; feeding dephenolized wastewater discharged from the bottom of the extraction tower into a wastewater heater, feeding into an ammonia cyanogen separator to be mixed with hot air from an air heater to remove ammonia after being heated by fume from the air heater, and feeding an ammonia-containing mixed gas discharged from the top of the ammonia-cyanogen separator into an ammonia water cooler for cooling to obtain ammonia water. By adopting the method and the device, precious resources such as coal tar, phenol and ammonia can be recycled from the semi-coke production wastewater resource, and the biodegradability of the semi-coke wastewater is improved.

Description

A kind of blue charcoal factory effluent resource utilization process method and device
Technical field
The present invention relates to a kind of coal chemical industrial waste water treatment unit and method, be specifically related to a kind of blue charcoal factory effluent resource utilization process method and device.
Background technology
China's energy structure is oil-poor, weak breath, many coals, for solving the contradiction of china natural resources constructional aspect and Economic development, reduces the dependence to crude oil, in recent years, at China's main coal-producing area develop actively Chemical Industry, as coal liquifaction project etc., significant.Coal Chemical Industry greatly improves the comprehensive utilization value of coal, and the waste water complicated produced in Coal Chemical Industry production process, not easily process.Therefore, the use of rational wastewater processing technology is the guarantee that Chemical Industry goes on benign development recycling economy, realizes the win-win of economic development and environment protection.
Blue charcoal is produced, be mainly low temperature in the one of raw material (about 650 DEG C) distillation process with not (weak) sticky coal, in this explained hereafter, blue charcoal (semicoke) can be obtained, gently, the heavy product such as coal tar and middle low-temperature pyrolysis coal gas, have abundant high-quality (not glue) coal on the Shaanxi of China, Inner Mongol, Datong, Xinjiang and other places, adapt with China Economic development, blue charcoal industry is also developing rapidly, and within 2013, blue carbon yield is about 5,000 ten thousand tons.Compared with coke high-temperature (about 1000 DEG C) distillation process, in blue charcoal, low-temperature pyrolysis removes coal gas that fugitive constituent generates without high temperature secondary cracking, contain a large amount of not by the pollutent of high temperature oxidation in raw gas washing water, its concentration exceeds about 10 times than coking chemical waste water.The waste component that blue charcoal produces in the low-temperature pyrolysis, gas purification process of raw coal is complicated; containing a large amount of loop chain organic compound, nitrine class mineral compound; oil in water, ammonia cyanogen, phenol, COD, SS equal size are very high; as COD content is about 40000mg/l; ammonia cyanogen content is about 3000mg/l; total phenol content is about 15000mg/l; high and the complicated component of the concentration of pollutent in blue charcoal factory effluent; blue charcoal factory effluent is made to be difficult to process; Heavy environmental pollution, the principles and policies of " energy-saving and emission-reduction " protection of the environment advocated with country are incompatible.
Current domestic process blue charcoal factory effluent usual way has two kinds, and one is biochemical treatment, and one is burning disposal, is just described for existing two kinds for the treatment of process Problems existing below.Adopt existing biochemical waste water process, there is following typical problem: the composition of coking chemical waste water is complicated especially, biodegradability is low, and the zero release often said, be only process after waste water be reused for (such as quenching aspect) in production, during for quenching, be only waste water is become waste gas enter in air, also can pollute.
Adopt incinerating method process waste water, maximum defect is there is from principle of design, that is: waste water directly sprays in the flame of gas-fired, chemically basic principle, belongs to incomplete combustion, a large amount of CO certainly will be produced, and for partial organic substances, as ammonia and cyanogen, cannot thoroughly remove, and a large amount of CO needs lifetime at 1100 DEG C to be 1s, just CO can be oxidized to 2incinerator floor space is very large in addition, the heat burned cannot make full use of again, water cannot go utilization again, cause the significant wastage of the energy and water, simultaneously safeguard and running cost higher, in burning disposal process, be discharged to again in air after contained prussiate and part ammonia prussiate cannot process, cause topsoil.
Above two kinds of methods also have a common weak point, some useful components namely in waste water, and as coal tar, phenol, ammonia etc. do not reclaim, make resource can not get recycling, this not only causes the significant waste of resource, also pollutes environment.In order to the problem of environmental pollution that blue charcoal factory effluent causes can be solved, and by blue charcoal factory effluent recycling, be badly in need of developing a kind of blue charcoal factory effluent resource utilization process method and device.
Summary of the invention
The object of the present invention is to provide a kind of blue charcoal factory effluent resource utilization process method and device, resource utilization the precious resources such as coal tar, phenol, ammonia can be reclaimed from blue charcoal waste water, improve the biodegradability of blue charcoal waste water, overcome the defects such as existing blue charcoal wastewater processing technology does not reclaim available resources in blue charcoal waste water and existing blue charcoal wastewater processing technology poor processing effect, biochemical treatment is difficult, working cost is high.
For achieving the above object, the present invention by the following technical solutions:
A kind of blue charcoal factory effluent resource utilization process device, comprise the oil separation tank be connected with blue charcoal waste water, the outlet of oil separation tank is connected with coarse filter, and the outlet of coarse filter is connected with water-and-oil separator with accurate filter successively; The outlet waste water of described water-and-oil separator is connected with dephenolize system and ammonia water recovery system through pipeline; Described dephenolize system comprises extraction tower, the back extraction tower be connected with the extraction tower with extraction agent entrance and acid out still, the import of described back extraction tower is communicated with the tower top of extraction tower, the tower top of described back extraction tower is communicated with the extraction agent entrance of extraction tower, is communicated with acid out still at the bottom of the tower of described back extraction tower; Described ammonia water recovery system comprises the waste water heater, the ammonia cyanogen separator that are communicated with successively, and ammoniacal liquor water cooler, described waste water heater is communicated with at the bottom of the tower of extraction tower, described waste water heater is provided with smoke inlet and exhanst gas outlet, described ammonia cyanogen separator is provided with gas inlet, the top of described ammonia cyanogen separator is communicated with ammoniacal liquor water cooler, and bottom is communicated with biochemical system.
Described accurate filter and water-and-oil separator at least adopt two-step serial to be connected.
The flue gas of described waste water heater and the air of ammonia cyanogen separator come from airheater.
The flue gas being used for adding warm air in described airheater comes from catalytic cracker, and the non-condensable gas in ammoniacal liquor water cooler enters in this catalytic cracker.
A kind of processing method implementing said apparatus, comprise the following steps: step one: first the blue charcoal waste water from production system enter oil separation tank, oil droplet floats up to the water surface and forms oil reservoir, discharged by collection tube and reclaim, oil separation tank water outlet connects coarse filter import, by the effect of coarse filter filter core, retain and remove Large stone solid suspension impurity, enter accurate filter and water-and-oil separator removal impurity afterwards successively and reclaim coal tar, light oil floating device for transferring, heavy oil sinking device for transferring; Step 2: enter extraction tower from the waste water after the oil removing of water-and-oil separator, in extraction tower, waste water and efficient complexing extractant counter current contact, carry out extracting and dephenolizing, the extraction phase of the tower top of extraction tower enters back extraction tower, in back extraction tower, extraction phase and sodium hydroxide solution counter current contact, strip, be extracted agent and sodium phenolate solution, sodium phenolate solution is discharged and is entered acid out still at the bottom of the tower of back extraction tower, and add sulfuric acid and carry out acid out, acid out obtains crude phenols; Step 3: the waste water after extraction tower dephenolize enters waste water heater, in waste water heater, by the flue gas heating from airheater, the waste water of heating enters ammonia cyanogen separator, mix with the warm air from airheater and carry out deamination, ammonia-containing gas mixture in ammonia cyanogen separator enters the cooling of ammoniacal liquor water cooler from top discharge and obtains ammoniacal liquor, non-condensable gas in ammoniacal liquor water cooler goes to catalytic cracker, carry out pyrolytic decomposition, the waste water of ammonia cyanogen separator bottom drains into biochemical system process.
The recovery method of described non-condensable gas is: this non-condensable gas enters in catalytic cracker, carry out pyrolytic decomposition, the flue gas that gas after decomposition and the blue charcoal exhaust combustion after purifying produce is successively by airheater and waste water heater, add warm air and waste water, carry out waste heat recovery, together entered in ammonia cyanogen separator by the air that heats and waste water.
The waste water of described coarse filter outlet is removed partial impurities and reclaims coal tar in 1# accurate filter, light oil floats and discharges, heavy oil sinks to discharging, waste water after the process of 1# accurate filter carries out oily water separation and reclaims coal tar in 1# water-and-oil separator, light oil floats and discharges, heavy oil sinks to discharging, waste water after the process of 1# water-and-oil separator removes residual impurity in waste water in 2# accurate filter, filtering accuracy reaches ss and is less than 2ppm, particle diameter is less than 2um, Separation and Recovery coal tar simultaneously, light oil floats and discharges, heavy oil sinks to discharging, waste water after the process of 2# accurate filter enters into 2# water-and-oil separator, light oil floats and discharges, heavy oil sinks to discharging, ensure that the oil-contg in waste water is down to below 300ppm.
Compared with prior art, the present invention has following beneficial effect:
Pass through such scheme, the present invention resource utilization can reclaim the precious resources such as coal tar, phenol, ammonia from blue charcoal waste water, improve blue charcoal wastewater biodegradability, overcome the defects such as existing blue charcoal wastewater processing technology does not reclaim available resources in blue charcoal waste water and existing blue charcoal wastewater processing technology poor processing effect, biochemical treatment is difficult, working cost is high, effectively can also improve the economic competitiveness of blue charcoal industry, promote the cleaner production of blue charcoal industry, realize recycling economy development.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See Fig. 1, the inventive system comprises the oil separation tank 1 be connected with blue charcoal waste water, the outlet of oil separation tank 1 is connected with coarse filter 2, the outlet of coarse filter 2 successively with 1# accurate filter 3, 1# water-and-oil separator 4, 2# accurate filter 5, 2# water-and-oil separator 6 is connected, the outlet of 2# water-and-oil separator 6 is connected with the extraction tower 7 with extraction agent entrance through pipeline, the waste water that 2# water-and-oil separator 6 is discharged enters in extraction tower 7 and carries out extracting and dephenolizing, extraction phase overflows from the tower top of extraction tower 7 and enters back extraction tower 8 and carry out back extraction with sodium hydroxide solution counter current contact, acid out still 9 is communicated with at the bottom of the tower of back extraction tower 8, the sodium phenolate solution that back extraction tower 8 end obtains enters acid out still 9, add sulfuric acid to carry out acid out and obtain crude phenols, the tower top of back extraction tower 8 is connected with the extraction agent entrance of extraction tower 7 by the road, the regenerated efficient complexing extractant that the tower top of back extraction tower 8 is discharged enters in extraction tower 7 through the extraction agent entrance of extraction tower 7, waste water heater 10 is communicated with bottom extraction tower 7, the waste water of discharging bottom extraction tower 7 after dephenolize enters waste water heater 10, waste water heater 10 is communicated with ammonia cyanogen separator 11, and be connected with the exhanst gas outlet of airheater 13 by the road, waste water in waste water heater 10 is entered ammonia cyanogen separator 11 by the flue gas heating from airheater 13, enter the flue gas qualified discharge in waste water heater 10 simultaneously, ammonia cyanogen separator 11 is connected with the air vout of airheater 13 by the road, in ammonia cyanogen separator 11, waste water mixes with the warm air from airheater 13 and carries out deamination, ammonia cyanogen separator 11 top is communicated with ammoniacal liquor water cooler 12, ammonia cyanogen separator 11 top out containing ammonia mixed gas enter ammoniacal liquor water cooler 12 cooling obtain ammoniacal liquor, ammonia cyanogen separator 11 bottom is communicated with biochemical system, the waste water of ammonia cyanogen separator 11 bottom enters biochemical system process, ammoniacal liquor water cooler 12 is communicated with catalytic cracker 14, the non-condensable gas that ammoniacal liquor water cooler 12 is discharged enters after catalytic cracker 14 carries out cracking and sends into airheater 13 through pipeline.
Operation process of the present invention is by the blue charcoal waste water from production system, first oil separation tank 1 is entered, by eddy flow district and negative area honeycomb inclined-tube effect, oil droplet floats up to the water surface and forms oil reservoir, discharged by collection tube and reclaim, removing wastewater surface oil slick, oil separation tank 1 water outlet enters coarse filter 2, by the effect of coarse filter 2 filter core, retain and remove Large stone solid suspension impurity, enter 1# accurate filter 3 afterwards, waste water retains greater particle size solid impurity and the filter core being separated coal tar effect by having, remove partial impurities and reclaim coal tar, light oil floating device for transferring, heavy oil sinking device for transferring realizes part oily water separation, isolated coal tar recovering, waste water from 1# accurate filter 3 enters 1# water-and-oil separator 4, under the effect of filter core, carry out oily water separation reclaim coal tar, light oil floating device for transferring, heavy oil sinking device for transferring, most dispersed oil and part oil in water emulsion are separated.The water outlet of 1# water-and-oil separator 4 enters 2# accurate filter 5, small solid impurity and the filter core being separated coal tar effect is retained by having, remove residual impurity in waste water, filtering accuracy can reach ss and be less than 2ppm, particle diameter is less than 2um, Separation and Recovery coal tar simultaneously, light oil floating device for transferring, heavy oil sinking device for transferring, its water outlet enters 2# water-and-oil separator and is separated oil in water emulsion in water outlet and dissolving oil further, light oil floating device for transferring, heavy oil sinking device for transferring, the oil-contg in waste water is down to below 300ppm.
From waste water after the oil removing of 2# water-and-oil separator 6, enter extraction tower 7, in extraction tower 7, waste water and efficient complexing extractant counter current contact, carry out extracting and dephenolizing, and the extraction phase of extraction tower top enters back extraction tower 8, in back extraction tower 8, extraction phase and sodium hydroxide solution counter current contact, strip, and is extracted agent and sodium phenolate solution.Regenerating extracting agent is discharged from the tower top of back extraction tower 8, and retrieval system recycles, and the sodium phenolate solution obtained at the bottom of back extraction tower enters acid out still 9, adds sulfuric acid and carries out acid out and obtain crude phenols.
Waste water after extraction tower 7 dephenolize enters waste water heater 10, catalytic cracker 14 blue charcoal exhaust combustion produce flue gas by airheater 13 add warm air laggard enter waste water heater 10 heated waste water, entered ammonia cyanogen separator 11 by the waste water heated in waste water heater 10, mix with the warm air from airheater and carry out deamination.Ammonia-containing gas mixture in ammonia cyanogen separator 11 enters ammoniacal liquor water cooler 12 cooling from top discharge and obtains ammoniacal liquor, and in ammoniacal liquor water cooler 12, non-condensable gas goes to catalytic cracker 14, carries out pyrolytic decomposition.The waste water of ammonia cyanogen separator 11 bottom drains into biochemical system process.
The process of oil removal of the present invention and nominal particle size impurity is, coarse filter 2 is entered by the waste water of oil separation tank 1, the suspended impurity that in water, particle diameter is larger is filtered core and stops removal, enter 1# accurate filter 3 by the waste water of filter core, have a small amount of coal tar Separation and Recovery in the less separated removal of suspended impurity particle of this part.Waste water after 1# accurate filter 3 processes enters 2# accurate filter 5 by 1# water-and-oil separator 4, is separated the nominal particle size impurity removed and leave in waste water.In waste water, removal efficiency reaches more than 95%, simultaneously Separation and Recovery part coal tar.
The process that the present invention reclaims coal tar is, waste water is Separation and Recovery part coal tar in oil separation tank 1 first, water outlet by carrying out oily water separation successively after coarse filter 2 in 1# accurate filter 3,1# water-and-oil separator 4,2# accurate filter 5,2# water-and-oil separator 6, reclaim coal tar, in 2# water-and-oil separator 6 water outlet, coal tar content is less than 300mg/l.
The process that the present invention reclaims crude phenols is, the blue charcoal waste water after oil removing and efficient complexing extractant enter extraction tower 7 counter current contact and carry out extracting and dephenolizing, and extraction phase overflows from the tower top of extraction tower 7, and the waste water after dephenolize is discharged at the bottom of the tower of extraction tower 7; Extraction phase and sodium hydroxide solution enter the back extraction of back extraction tower 8 counter current contact, and the extraction agent retrieval system that the tower top of back extraction tower 8 obtains recycles, and the sodium phenolate solution obtained at the bottom of the tower of back extraction tower 8 enters acid out still and adds sulfuric acid and carry out acid out and obtain crude phenols.
The process that the present invention reclaims ammoniacal liquor is, the waste water of discharging bottom extraction tower 7 after dephenolize enters waste water heater 10, by the flue gas heating to 110 DEG C-126 DEG C from airheater 13, the waste water of heating enters ammonia cyanogen separator 11 and mixes with the warm air from airheater 13 and carry out deamination, ammonia cyanogen separator 11 top out containing ammonia mixed gas enter ammoniacal liquor water cooler 12 cooling obtain ammoniacal liquor, the waste water of ammonia cyanogen separator 11 bottom enters biochemical system process.
1, the present invention has good separating effect to oil in water emulsion, oil slick, dispersed oil in waste water, and coal tar clearance reaches more than 80%.
2, the present invention adopts efficient complexing extractant extracting and dephenolizing, and reversible complex reaction is combined with extraction separation process, and extraction efficiency is high, reaches more than 95%.The advantages such as efficient extraction agent, compared with other dephenolize extraction agent, has partition ratio large, and in water solubleness is little.
3, the present invention adopts the blue charcoal waste water of blue charcoal exhaust combustion flue gas heating, and adopt warm air directly to contact deamination with the blue charcoal waste water after heating, with other deamination technics comparing, the method energy consumption is low, and ammonia removal efficiency is high, does not produce secondary pollution.
4, the waste water quality after process of the present invention significantly improves, in waste water, the clearance of total phenol is greater than 95%, the clearance of ammonia cyanogen is greater than 85%, the clearance of COD is greater than 90%, waste water after process meets the requirement of subsequent biochemical process, biodegradability is high, final discharged wastewater met the national standard after subsequent biochemical process.
5, the invention solves pollution problem that blue charcoal factory effluent causes and resource utilization reclaims the useful resources such as coal tar, phenol, ammoniacal liquor, the economic competitiveness of blue charcoal project can be improved, promote the cleaner production of blue charcoal industry, realize recycling economy development.
6, present invention process is advanced, floor space is little, stable, level of automation is high.

Claims (7)

1. a blue charcoal factory effluent resource utilization process device, it is characterized in that: comprise the oil separation tank (1) be connected with blue charcoal waste water, the outlet of oil separation tank (1) is connected with coarse filter (2), and the outlet of coarse filter (2) is connected with water-and-oil separator with accurate filter successively; The outlet of described water-and-oil separator is connected with dephenolize system and ammonia water recovery system through pipeline; Described dephenolize system comprises extraction tower (7), back extraction tower (8) and acid out still (9), described back extraction tower is communicated with the tower top of extraction tower, the tower top of described back extraction tower is communicated with the extraction agent entrance of extraction tower, is communicated with acid out still at the bottom of the tower of described back extraction tower; Described ammonia water recovery system comprises the waste water heater, the ammonia cyanogen separator that are communicated with successively, and ammoniacal liquor water cooler, described waste water heater is communicated with at the bottom of the tower of extraction tower, described waste water heater is provided with smoke inlet and exhanst gas outlet, described ammonia cyanogen separator is provided with gas inlet, the top of described ammonia cyanogen separator is communicated with ammoniacal liquor water cooler, and bottom is communicated with biochemical system.
2. a kind of blue charcoal factory effluent resource utilization process device as claimed in claim 1, is characterized in that: described accurate filter and water-and-oil separator at least adopt two-step serial to be connected.
3. a kind of blue charcoal factory effluent resource utilization process device as claimed in claim 1, is characterized in that: the flue gas of described waste water heater (10) and the air of ammonia cyanogen separator come from airheater.
4. a kind of blue charcoal factory effluent resource utilization process device as claimed in claim 3, it is characterized in that: the flue gas being used for adding warm air in described airheater comes from catalytic cracker (14), and the non-condensable gas in ammoniacal liquor water cooler enters in this catalytic cracker.
5. implement the claims a processing method for device described in 1, it is characterized in that: comprise the following steps:
Step one: first the blue charcoal waste water from production system enter oil separation tank (1), oil droplet floats up to the water surface and forms oil reservoir, discharged by collection tube and reclaim, by the effect of coarse filter (2) filter core, retain and remove Large stone solid suspension impurity, enter accurate filter and water-and-oil separator removal impurity afterwards successively and reclaim coal tar, light oil floats and discharges, heavy oil sinking discharge;
Step 2: enter extraction tower (7) from the waste water after water-and-oil separator oil removing, in extraction tower (7), waste water and efficient complexing extractant counter current contact, carry out extracting and dephenolizing, the extraction phase of extraction tower (7) tower top enters back extraction tower (8), in back extraction tower (8), extraction phase and sodium hydroxide solution counter current contact, strip, be extracted agent and sodium phenolate solution, sodium phenolate solution is discharged and is entered acid out still (9) at the bottom of the tower of back extraction tower (8), and add sulfuric acid and carry out acid out, acid out obtains crude phenols;
Step 3: the waste water after extraction tower (7) dephenolize enters waste water heater (10), in waste water heater, waste water after dephenolize is by the flue gas heating from airheater, the waste water of heating enters ammonia cyanogen separator (11), mix with the warm air from airheater and carry out deamination, ammonia-containing gas mixture in ammonia cyanogen separator (11) enters ammoniacal liquor water cooler (12) cooling from top discharge and obtains ammoniacal liquor, non-condensable gas in ammoniacal liquor water cooler (12) enters catalytic cracker pyrolytic decomposition, the waste water of ammonia cyanogen separator (11) bottom drains into biochemical system process.
6. method according to claim 5, it is characterized in that: the recovery method of described non-condensable gas is: this non-condensable gas enters in catalytic cracker, after carrying out pyrolytic decomposition, add warm air and waste water by airheater and waste water heater successively with the flue gas that blue charcoal exhaust combustion produces, together entered in ammonia cyanogen separator by the air that heats and waste water.
7. the method according to claim 5 or 6, it is characterized in that: the waste water that described coarse filter (2) exports is removed partial impurities and reclaimed coal tar in 1# accurate filter (3), light oil floats and discharges, heavy oil sinks to discharging, waste water after 1# accurate filter (3) process carries out oily water separation and reclaims coal tar in 1# water-and-oil separator (4), light oil floats and discharges, heavy oil sinks to discharging, waste water after 1# water-and-oil separator (4) process removes residual impurity in waste water in 2# accurate filter (5), filtering accuracy reaches ss and is less than 2ppm, particle diameter is less than 2um, Separation and Recovery coal tar simultaneously, light oil floats and discharges, heavy oil sinks to discharging, waste water after 2# accurate filter (5) process enters into 2# water-and-oil separator (6), light oil floats and discharges, heavy oil sinks to discharging, oil-contg in waste water is down to below 300ppm.
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CN104926029A (en) * 2015-05-27 2015-09-23 张世文 Comprehensive use of coke, phenol and ammonia in semi coke sewage and sewage disposal recycle method
CN104944691A (en) * 2015-06-10 2015-09-30 张世文 Semicoke wastewater treatment and regeneration and resource reclamation device based on membrane concentration
CN105399174A (en) * 2015-12-17 2016-03-16 王伟东 Complete equipment for low-energy-consumption extraction phenol removal and phenol recovery from coal industrial wastewater and processing method
CN105461137A (en) * 2015-12-19 2016-04-06 榆林学院 Efficient pre-treatment device of oily wastewater
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CN111892210A (en) * 2020-09-03 2020-11-06 查都（上海）科技有限公司 Semi-coke wastewater pretreatment method and device

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CN104860444A (en) * 2015-05-27 2015-08-26 张世文 Device and method for recovering coal tar in semi-coke wastewater
CN104926029A (en) * 2015-05-27 2015-09-23 张世文 Comprehensive use of coke, phenol and ammonia in semi coke sewage and sewage disposal recycle method
CN104944691A (en) * 2015-06-10 2015-09-30 张世文 Semicoke wastewater treatment and regeneration and resource reclamation device based on membrane concentration
CN104944691B (en) * 2015-06-10 2017-07-14 张世文 The semi-coke wastewater processing regeneration concentrated based on film and resource recycling device
CN105399174A (en) * 2015-12-17 2016-03-16 王伟东 Complete equipment for low-energy-consumption extraction phenol removal and phenol recovery from coal industrial wastewater and processing method
CN105399174B (en) * 2015-12-17 2018-08-03 王伟东 Low energy consumption extracting and dephenolizing coal chemical industry wastewater and phenol recycling complete set of equipments and processing method
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CN105461137B (en) * 2015-12-19 2017-12-29 榆林学院 A kind of oily waste water highly effective pretreatment apparatus
CN105923833A (en) * 2016-06-13 2016-09-07 郑州天萃取科技有限公司 Phenolic wastewater treatment system and phenolic wastewater treatment technology
CN109399849A (en) * 2018-10-23 2019-03-01 广东省建筑设计研究院 A kind of semi-coke wastewater treatment process
CN111892210A (en) * 2020-09-03 2020-11-06 查都（上海）科技有限公司 Semi-coke wastewater pretreatment method and device

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