CN102992551A - Method for treating high-concentration wastewater efficiently - Google Patents
Method for treating high-concentration wastewater efficiently Download PDFInfo
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- CN102992551A CN102992551A CN201210537412XA CN201210537412A CN102992551A CN 102992551 A CN102992551 A CN 102992551A CN 201210537412X A CN201210537412X A CN 201210537412XA CN 201210537412 A CN201210537412 A CN 201210537412A CN 102992551 A CN102992551 A CN 102992551A
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Abstract
The invention discloses a method for treating high-concentration wastewater efficiently. The method comprises the following process steps of firstly heating the high-concentration wastewater; introducing the heated high-concentration waste water in an evaporation and condensation wastewater treatment unit assembly; evaporating the heat wastewater at a low temperature in the evaporation and condensation wastewater treatment unit assembly; evaporating partial of the wastewater into condensation water; collecting and discharging the condensation water if the quality of the condensation water reaches a standard; discharging or recycling the condensation water reaching the standard after subsequent biochemical treatment if the quality of the condensation water does not reach the standard; discharging the cooled wastewater which is not evaporated out of the evaporation and condensation wastewater treatment unit assembly; reheating the wastewater and introducing the heated wastewater into the assembly again; repeating the low-temperature evaporation and condensation until the high-concentration wastewater is treated completely with only a concentrated solution which cannot be evaporated or condensed; and treating the concentrated solution via subsequent multi-stage crystallization processes or other means to recycle valuable materials in the high-concentration wastewater. The water treated by the method can be zero release; and the valuable materials in the high-concentration wastewater can be recycled.
Description
Technical field
The present invention relates to a kind of novel process of processing high-concentration waste water with low temperature composite membrane evaporation mechanism in conjunction with biochemical process.
Background technology
High slat-containing wastewater, difficult for biological degradation with the waste water such as virulent high-concentration waste water, waste emulsified mixture, percolate, very big to environmental hazard.The Technological Economy difficult points such as present processing to this type of waste water also exists processing technological flow long, and investment cost is high, and working cost is large.Adopt low temperature composite membrane evaporation condensation mechanism to process this type of waste water in conjunction with biochemical process and shortened processing technological flow, investment cost descends, if utilize useless waste heat etc., working cost is quite low.Conventional treatment process generally needs dosing, and is generally influential to recover materials in the sewage after the dosing, and can increase sludge quantity after the dosing, causes reclaiming difficulty.
Summary of the invention
Purpose of the present invention is exactly for above-mentioned the deficiencies in the prior art, and a kind of of exploitation not only can process the method that high-concentration waste water can also reclaim the efficient processing high-concentration waste water of valuable substance in the waste water.
The technical solution used in the present invention is as follows:
A kind of method of efficient processing high-concentration waste water, it is characterized in that its technique step is poly-as follows: first high-concentration waste water is heated, then the thermal wastewater after the heating is sent in the evaporative condenser processing waste water unit assembly, thermal wastewater is low-temperature evaporation in evaporative condenser is processed the waste water unit assembly, part waste water flashes to condensed water, as this moment the condensed water water quality reaching standard then compile discharge, such as this moment below standard then follow-up biochemical treatment rear discharging up to standard of condensed water water quality or reuse; Evaporation has not been fallen and has again been sent in the described assembly after warm waste water discharge evaporative condenser processing waste water unit assembly reheats, so circulation low-temperature evaporation condensation, until high-concentration waste water is processed fully, remaining concentrated solution that can't evaporative condenser only, described concentrated solution is processed through follow-up multistage crystallization again, reclaims valuable material in the high-concentration waste water.
Described evaporative condenser is processed the waste water unit assembly and is adopted low temperature composite membrane evaporative condenser.
Beneficial effect of the present invention has:
Adopt low temperature composite membrane evaporation novel process can process high-concentration sewage in conjunction with biochemical processing process, and in treating processes, utilize useless waste heat can save working cost, but the water zero release after the processing, and can reclaim valuable material in the waste water.Low-temperature evaporation can not cause damage to temperature-sensitive valuable substance in the waste water, need not add any medicament, thereby has improved recovery value.
Description of drawings
Fig. 1 is one of schematic flow sheet of the present invention.
Fig. 2 is two of schematic flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described:
The present invention processes the waste water unit assembly with some high efficient cryogenic composite membrane evaporative condensers and is combined into high efficient cryogenic evaporative condenser processing waste water plant according to the high-concentration waste water treatment water yield.Follow-up biochemical treatment facility water quality treatment does not reach the condensed water (reached emission standard such as condensed water water quality and then do not established follow-up biochemical treatment facility, condensed water up to standard is directly discharged) of emission standard.Follow-up multistage crystallization or other means are processed high-concentration waste water through the concentrated certain density dope of low-temperature evaporation, reclaim valuable material in the high-concentration waste water.
To process reverse osmosis concentrated water as example, first with the reverse osmosis concentrated water heating, the rear lifting of heating is sent into the high efficient cryogenic evaporative condenser and is processed in the waste water unit assembly.Heat dense water low-temperature evaporation in assembly, the dense water evaporating cold of the part condensed water of congealing into is compiled and is effluxed or reuse.Evaporation has been fallen warm concentrated concentrated water drainage and has been gone out assembly, send in the assembly after reheating, so circulation low-temperature evaporation condensation, until reverse osmosis concentrated water low-temperature evaporation condensation process enters the crystallization of multistage crystallization equipment or enters spontaneous evaporation residual moisture in the spontaneous evaporation case after near saturation concentration to its salinity, the salt after the evaporation can all be recycled.So reverse osmosis concentrated water is after above-mentioned processing, and the moisture low-temperature evaporation is condensed into condensed water qualified discharge or reuse, and the salt crystallization all fully utilizes (seeing schematic flow sheet 1) after by simple process after the evaporation concentration.
To process electroplating wastewater as example, electroplating wastewater is promoted send in the high efficient cryogenic evaporative condenser processing waste water unit assembly first again.Waste water is heated in assembly, and low-temperature evaporation, the part waste water evaporating cold condensed water of congealing into is compiled and entered follow-up biochemical treatment and establish to put and process rear discharging up to standard.Warm waste water discharge assembly has not fallen in evaporation, promotes and sends in the assembly, so circulating-heating.The low-temperature evaporation condensation is until electroplating wastewater is processed fully.Dope after the electroplating wastewater processing can rise to coating bath reuse (seeing schematic flow sheet 2) after the adjustment of follow-up adjustment facility.
The undeclared part of other that the present invention relates to is same as the prior art.
Claims (2)
1. efficient method of processing high-concentration waste water, it is characterized in that its technique step is poly-as follows: first high-concentration waste water is heated, then the thermal wastewater after the heating is sent in the evaporative condenser processing waste water unit assembly, thermal wastewater is low-temperature evaporation in evaporative condenser is processed the waste water unit assembly, part waste water flashes to condensed water, as this moment the condensed water water quality reaching standard then compile discharge, such as this moment below standard then follow-up biochemical treatment rear discharging up to standard of condensed water water quality or reuse; Evaporation has not been fallen and has again been sent in the described assembly after warm waste water discharge evaporative condenser processing waste water unit assembly reheats, so circulation low-temperature evaporation condensation, until high-concentration waste water is processed fully, remaining concentrated solution that can't evaporative condenser only, described concentrated solution is processed through follow-up multistage crystallization again, reclaims valuable material in the high-concentration waste water.
2. the method for a kind of efficient processing high-concentration waste water according to claim 1 is characterized in that described evaporative condenser processing waste water unit assembly adopts low temperature composite membrane evaporative condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210537412XA CN102992551A (en) | 2012-12-13 | 2012-12-13 | Method for treating high-concentration wastewater efficiently |
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| CN201210537412XA CN102992551A (en) | 2012-12-13 | 2012-12-13 | Method for treating high-concentration wastewater efficiently |
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| CN102992551A true CN102992551A (en) | 2013-03-27 |
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| CN201210537412XA Pending CN102992551A (en) | 2012-12-13 | 2012-12-13 | Method for treating high-concentration wastewater efficiently |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253833A (en) * | 2013-06-03 | 2013-08-21 | 江苏金山环保工程集团有限公司 | Comprehensive treatment method for sludge or waste liquid |
| CN110028201A (en) * | 2019-05-08 | 2019-07-19 | 杭州齐创环境工程有限公司 | A kind of waste emulsified mixture resource utilization processing system and technique |
| CN111646647A (en) * | 2020-06-18 | 2020-09-11 | 陕西北元化工集团股份有限公司 | Alkaline washing tower wastewater treatment system and treatment method |
| CN116253454A (en) * | 2022-12-27 | 2023-06-13 | 江苏永葆环保科技股份有限公司 | Treatment method of waste emulsion |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525197A (en) * | 2008-04-15 | 2009-09-09 | 昆明冶金研究院 | Low-energy treatment method of high-density hydrometallurgical process wastewater |
| CN102774913A (en) * | 2012-08-17 | 2012-11-14 | 江苏金山环保科技股份有限公司 | Short-flow composite membrane sewage treatment device |
-
2012
- 2012-12-13 CN CN201210537412XA patent/CN102992551A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525197A (en) * | 2008-04-15 | 2009-09-09 | 昆明冶金研究院 | Low-energy treatment method of high-density hydrometallurgical process wastewater |
| CN102774913A (en) * | 2012-08-17 | 2012-11-14 | 江苏金山环保科技股份有限公司 | Short-flow composite membrane sewage treatment device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103253833A (en) * | 2013-06-03 | 2013-08-21 | 江苏金山环保工程集团有限公司 | Comprehensive treatment method for sludge or waste liquid |
| CN110028201A (en) * | 2019-05-08 | 2019-07-19 | 杭州齐创环境工程有限公司 | A kind of waste emulsified mixture resource utilization processing system and technique |
| CN111646647A (en) * | 2020-06-18 | 2020-09-11 | 陕西北元化工集团股份有限公司 | Alkaline washing tower wastewater treatment system and treatment method |
| CN116253454A (en) * | 2022-12-27 | 2023-06-13 | 江苏永葆环保科技股份有限公司 | Treatment method of waste emulsion |
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Application publication date: 20130327 |