CN103663861B - Advanced treatment method for grading and recycling industrial park wastewater after biochemical processes - Google Patents
Advanced treatment method for grading and recycling industrial park wastewater after biochemical processes Download PDFInfo
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- CN103663861B CN103663861B CN201310582292.XA CN201310582292A CN103663861B CN 103663861 B CN103663861 B CN 103663861B CN 201310582292 A CN201310582292 A CN 201310582292A CN 103663861 B CN103663861 B CN 103663861B
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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
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- 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
Abstract
The present invention discloses an advanced treatment method for grading and recycling industrial park wastewater after biochemical processes, which belongs to the technical field of the sewage treatment. The method comprises firstly, entering the industrial park wastewater after biochemical processes into cloth filter for treatment, and respectively entering the filter effluent of cloth filter into an O3 coupling biochar system and an artificial light coupling submerged plants purification pond for treatment in two paths, wherein the O3 coupling biochar system consists of a O3 oxygen pond and a biochar pond, and the outlet of the artificial light coupling submerged plants purification pond is communicated with a clean water pond through a valve; then drawing an appropriate amount of water from the recycling clean water pond to be transferred into a nanofiltration softening device, a softening water tank, a reverse osmosis device, a de-salting water tank, an electric desalting device and an ultrapure water tank, and finally sending the recycling clear pool, the softening tank, the de-salting water tank and the ultrapure water tank to the industrial park water consuming point by pipelines or water carts. A high recycling rate can be achieved, and water treatment costs can be significantly reduced, so that the method is worthy of being popularized.
Description
Technical field
The present invention relates to the deep treatment method of a kind of industrial park biochemical tail water grading recycle, belong to technical field of sewage.
Background technology
Sewage is after secondary biochemical treatment, although energy qualified discharge, but still containing certain pollutent, because quantity discharged is large, remains the primary pollution source of water environment pollution.To Sewage Plant secondary biochemical tail water carry mark or advanced treatment be the important channel of improving quality of water environment.At present, conventional deep treatment method is primarily of the combination process of the technological maheup such as physico-chemical process, biochemical process, membrane separation process.
Chinese patent CN1435386 provides a kind of advanced treatment of wastewater reuse technology, former water successively through steps such as coagulation air-float, fibre-ball filtration, O3 contacted oxidation, charcoal filtration, multi-medium filtering, accurate filter filtration, sterilizations, is realized deep purification of waste water and reuse by system.This advanced treatment process has the shortcomings such as investment is comparatively large, complicated operation, running cost are higher, serviceability is not strong.
Chinese patent CN101209886 provides a kind of advanced treatment recycling technique of urban sewage adopting membrane bioreactor and reverse osmosis coupling.Be be former water with the secondary effluent of municipal effluent, enter membrane bioreactor MBR system and carry out biochemical pre-treatment, remove BOD, COD, SS, the ammonia nitrogen in water, then through the further advanced desalination process of reverse osmosis system, required reuse water can be obtained.There is the film shortcomings such as easily dirt is stifled, serviceability is not strong in this technique.
Chinese patent CN102206022A discloses a kind of system materialization bioecology method being widely used in advanced treatment of wastewater, by sewage to be processed first by grid, removes the larger bulk foreign material such as sandstone, wooden unit, plastics, enters pretreatment pool; In pretreatment pool, carry out sewage mixing regulate, scientific and reasonable interpolation flocculation agent, is aided with microwave treatment, rapidly and efficiently precipitates flocs unit; Then enter biological treatment tank, carry out ultrasonic synergistic Air Exposure, biological respinse, finally enter the Wetlands ecosystems formed based on plant, animal and microorganism, carry out ecosystem process, discharge or reuse.This advanced treatment process can not reach higher water quality, is difficult to the Treated sewage reusing being applicable to industrial enterprise.
Summary of the invention
For the shortcoming existed in prior art, the technical problem to be solved in the present invention is to provide the deep treatment method of a kind of industrial park biochemical tail water grading recycle, and the method not only can realize higher reclamation rate, and can reduce costs, and promotional value is large.
The technical scheme that the present invention solves its technical problem is:
A deep treatment method for industrial park biochemical tail water grading recycle, is characterized in that comprising following processing step:
(1) industrial park biochemical tail water enters filtering cloth filtering pool process, and the filtering accuracy of filter cloth is 10um, filters out the suspended substance of more than 90%, and ss suspended solid can reach below 10mg/L;
(2) filtering cloth filtering pool goes out moisture two-way and enters O respectively
3coupled biological charcoal system is coupled with source of artificial light the process of submerged plant treating pond, O
3coupled biological charcoal system is by O
3oxidation pond and charcoal pond composition, O
3the outlet of oxidation pond is connected by the valve submerged plant treating pond that is coupled with charcoal pond and source of artificial light respectively; Wherein, annual May and October by 65%, June and September by 75%, July and August by 90% filtering cloth filtering pool water outlet enter source of artificial light coupling submerged plant treating pond, the water outlet of residue filtering cloth filtering pool enters O
3the process of coupled biological charcoal system; O
3coupled biological charcoal system is coupled with source of artificial light after the water outlet of submerged plant treating pond mixes can reach surface water 4 class water quality standard, enters reuse clean water basin; Annual January ~ April, November and December, filtering cloth filtering pool water outlet 100% enters O
3coupled biological charcoal system, O
3the water outlet of coupled biological charcoal system enters source of artificial light coupling submerged plant pond again by the valve opened on connecting pipe and continues and O
3contact, improves O
3mix with sewage the time contacted, improve treatment effect; The water outlet in source of artificial light coupling submerged plant pond enters charcoal pond again by the valve opened on connecting pipe; Reuse clean water basin are entered after the water outlet of charcoal pond process reaches surface water 4 class water quality standard;
(3) consumption of softening water needed for the enterprise of industrial park, extract appropriate water from reuse clean water basin and send into nanofiltration softening installation, water outlet meets domestic hot water boiler water quality standard, and hardness, lower than 0.03mmol/L, enters softening water tank;
(4) consumption of de-mineralized water needed for the enterprise of industrial park, extract appropriate water from softening water tank and send into reverse osmosis unit, water outlet meets low pressure steam boiler water quality standards, enters sweet-water tank;
(5) according to the consumption of industrial park enterprise ultrapure water, extract appropriate water send into electric desalination (EDI) device from sweet-water tank, water outlet can meet enterprise of electronic semi-conductor ultrapure water water quality and high-duty boiler water quality standard, enters ultrapure water tank;
(6) reuse clean water basin, softening water tank, sweet-water tank, ultrapure water tank are delivered to garden water spot with pipeline or water trolley respectively.
Wherein, O
3be 20 ~ 60min with the duration of contact that mixes of sewage, ozone concn is 0.5 ~ 2mg/L, and sewage is 1 ~ 3h in the residence time in gac pond.
The source of artificial light of described source of artificial light coupling submerged plant treating pond is the multiple LED light source be made up of red LED light and blue LED light, and the ratio of red light and blue light is (5 ~ 10): 1, and submerged plant used is the verticillate submerged plant of narrow leaf.
Described nanofiltration softening installation select molecular weight cut-off be 300 ~ 400 nanofiltration membrane, the rate of recovery controls 75 ~ 85%, and the dense water of 15 ~ 25% turns back to reuse clean water basin.
Rolling low-pressure reverse osmosis membrane selected by described reverse osmosis unit, and the rate of recovery of reverse osmosis controls 80 ~ 85%, and dense water turns back to softening water tank.
Described electric desalination plant, EDI module selects rolling or plate and frame, and operation scheme is dense water circulation type, and pole water returns softening water tank.
Method of the present invention may be used for the advanced treatment processing all kinds of Sewage Plant biochemical tail water, and not only treatment effect is good, can realize higher reclamation rate, and significantly can reduce cost of water treatment, and promotional value is large.
Accompanying drawing explanation
Fig. 1 is the technological process of the deep treatment method of a kind of industrial park of the present invention biochemical tail water grading recycle.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further details.
Embodiment 1:
The advanced treatment of the grading recycle of certain enterprise campus Sewage Plant biochemical tail water, main water quality parameter is pH6.8 ~ 8.5, and SS is 40 ~ 50mg/L COD is 50 ~ 60mg/L, NH
3-N is 8 ~ 10mg/L, TP is 0.2 ~ 0.3mg/L.
Adopt method as shown in Figure 1:
(1) industrial park biochemical tail water enters filtering cloth filtering pool process, and the filtering accuracy of filter cloth is 10um ~ 20um, filters out the suspended substance of more than 90%, SS is dropped to below 10mg/L.
(2) filtering cloth filtering pool water outlet enters O respectively by Open valve 1 and valve 2
3coupled biological charcoal system is coupled with source of artificial light the process of submerged plant treating pond.Wherein, annual 5 and October by 65%, June and September by 75%, July and August by 90% ratio source of artificial light coupling submerged plant treating pond is sent in filtering cloth filtering pool water outlet, remain filtering cloth filtering pool water outlet and enter O
3the process of coupled biological charcoal system.O
3coupled biological charcoal system is coupled with source of artificial light after the water outlet of submerged plant treating pond mixes and reaches surface water 4 class water quality standard, enters clean water basin.
Annual January ~ April, November and December, filtering cloth filtering pool water outlet all enters O by Open valve 1 and valve-off 2
3oxidation pond, then enter submerged plant pond by Open valve 4 and valve-off 5, then enter charcoal pond by Open valve 6 and valve-off 7, water outlet enters reuse clean water basin after reaching surface water 4 class water quality standard.
The processing parameter that need control during source of artificial light coupling submerged plant treating pond process is hydraulic detention time is 3d, night, light application time was 3h, source of artificial light is the multiple LED light source be made up of red LED light and blue LED light, total power 100w, the ratio of red light and blue light is 10:1, and submerged plant is the verticillate submerged plant hornwort of narrow leaf; At O
3in coupled biological charcoal system, O
3be 30min with the duration of contact that mixes of sewage, ozone concn is 0.5mg/L, and sewage is 2h in the residence time in gac pond.
In clean water basin, water removes reuse point 1, can be used as the municipal usage such as pouring, carwash, road surface watering.
(3) consumption of softening water needed for the enterprise of industrial park, extract appropriate water from reuse clean water basin and send into nanofiltration softening installation, the nanofiltration membrane selected can be NF270, and molecular weight cut-off is 300 ~ 400, and the rate of recovery controls 75%, the dense water of 25% turns back to clean water basin, water outlet meets domestic hot water boiler water quality standard, and hardness, lower than 0.03mmol/L, enters softening water tank, remove reuse point 2, produce required softening water for enterprise.
(4) consumption of de-mineralized water needed for the enterprise of industrial park, extract appropriate water from softening water tank and send into reverse osmosis unit, reverse osmosis membrane selects rolling low-pressure reverse osmosis membrane, and the rate of recovery of reverse osmosis controls 80%, and dense water turns back to softening water tank.Water outlet meets low pressure steam boiler water quality standards, enters sweet-water tank, removes reuse point 3, the de-mineralized water needed for producing for enterprise.
(5) according to the consumption of industrial park enterprise ultrapure water, extract appropriate water from sweet-water tank and send into electric desalination (EDI) device, EDI module selects rolling or plate and frame, and operation scheme is dense water circulation type, and pole water returns softening water tank.Water outlet can meet enterprise of electronic semi-conductor ultrapure water water quality and high-duty boiler water quality standard, enters ultrapure water tank, removes reuse point 4, the ultrapure water needed for producing for enterprise.
(6) clean water basin, softening water tank, sweet-water tank, ultrapure water tank are delivered to each reuse water spot in garden with pipeline or water trolley respectively.
Embodiment 2:
The advanced treatment of the grading recycle of certain printing and dyeing enterprise garden Sewage Plant biochemical tail water, main water quality parameter is pH6.8 ~ 8.5, colourity 30 ~ 40 times, and SS is 50 ~ 70mg/L, COD is 70 ~ 80mg/L, NH
3-N is 10 ~ 15mg/L, TP is 0.3 ~ 0.5mg/L.
Adopt method as shown in Figure 1:
(1) industrial park biochemical tail water enters filtering cloth filtering pool process, and the filtering accuracy of filter cloth is 10um ~ 20um, filters out the suspended substance of more than 90%, and ss suspended solid can reach below 10mg/L.
(2) filtering cloth filtering pool water outlet enters O respectively by Open valve 1 and valve 2
3coupled biological charcoal system is coupled with source of artificial light the process of submerged plant treating pond.Wherein, annual 5 and October by 65%, June and September by 75%, July and August by 90% ratio source of artificial light coupling submerged plant treating pond is sent in filtering cloth filtering pool water outlet, remain filtering cloth filtering pool water outlet and enter O
3the process of coupled biological charcoal system.O
3coupled biological charcoal system is coupled with source of artificial light after the water outlet of submerged plant treating pond mixes and reaches surface water 4 class water quality standard, enters clean water basin.
Annual January ~ April, November and December, filtering cloth filtering pool water outlet all enters O by Open valve 1 and valve-off 2
3oxidation pond, then enter submerged plant pond by Open valve 4 and valve-off 5, then enter charcoal pond by Open valve 6 and valve-off 7, water outlet enters reuse clean water basin after reaching surface water 4 class water quality standard.
The processing parameter that need control during source of artificial light coupling submerged plant treating pond process is hydraulic detention time is 8d, night, light application time was 6h, source of artificial light is the multiple LED light source be made up of red LED light and blue LED light, total power 100w, the ratio of red light and blue light is 5:1, and submerged plant is the verticillate submerged plant hornwort of narrow leaf; At O
3in coupled biological charcoal system, O
3be 60min with the duration of contact that mixes of sewage, ozone concn is 2mg/L, and sewage is 3h in the residence time in gac pond.
In clean water basin, water removes reuse point 1, can be used as the municipal usage such as pouring, carwash, road surface watering.
(3) consumption of softening water needed for the enterprise of industrial park, extract appropriate water from reuse clean water basin and send into nanofiltration softening installation, nanofiltration membrane can select NF270, and molecular weight cut-off is 300 ~ 400, and the rate of recovery controls 85%, and the dense water of 15% turns back to clean water basin; Water outlet meets domestic hot water boiler water quality standard, and hardness, lower than 0.03mmol/L, enters softening water tank, removes reuse point 2, produces required softening water for enterprise.
(4) consumption of de-mineralized water needed for the enterprise of industrial park, extract appropriate water from softening water tank and send into reverse osmosis unit, reverse osmosis membrane selects rolling low-pressure reverse osmosis membrane, and the rate of recovery of reverse osmosis controls 85%, and dense water turns back to softening water tank.Water outlet meets low pressure steam boiler water quality standards, enters sweet-water tank, removes reuse point 3, the de-mineralized water needed for producing for enterprise.
(5) according to the consumption of industrial park enterprise ultrapure water, extract appropriate water from sweet-water tank and send into electric desalination (EDI) device, EDI module selects rolling or plate and frame, and operation scheme is dense water circulation type, and pole water returns softening water tank.Water outlet can meet enterprise of electronic semi-conductor ultrapure water water quality and high-duty boiler water quality standard, enters ultrapure water tank, removes reuse point 4, the ultrapure water needed for producing for enterprise.
(6) clean water basin, softening water tank, sweet-water tank, ultrapure water tank are delivered to each reuse water spot in garden with pipeline or water trolley respectively.
Claims (5)
1. a deep treatment method for industrial park biochemical tail water grading recycle, is characterized in that comprising following processing step:
(1) industrial park biochemical tail water enters filtering cloth filtering pool process, and the filtering accuracy of filter cloth is 10 μm, filters out the suspended substance of more than 90%, and ss suspended solid can reach below 10mg/L;
(2) filtering cloth filtering pool goes out moisture two-way and enters O respectively
3coupled biological charcoal system is coupled with source of artificial light the process of submerged plant treating pond, O
3coupled biological charcoal system is by O
3oxidation pond and charcoal pond composition, O
3the outlet of oxidation pond is connected by the valve submerged plant treating pond that is coupled with charcoal pond and source of artificial light respectively; Wherein, annual May and October by 65%, June and September by 75%, July and August by 90% filtering cloth filtering pool water outlet enter source of artificial light coupling submerged plant treating pond, the water outlet of residue filtering cloth filtering pool enters O
3the process of coupled biological charcoal system; O
3coupled biological charcoal system is coupled with source of artificial light after the water outlet of submerged plant treating pond mixes can reach surface water 4 class water quality standard, enters reuse clean water basin; Annual January ~ April, November and December, filtering cloth filtering pool water outlet 100% enters O
3coupled biological charcoal system, O
3oxidation pond water outlet enters source of artificial light coupling submerged plant pond again by the valve opened on connecting pipe and continues and O
3contact, improves O
3mix with sewage the time contacted, improve treatment effect; The water outlet in source of artificial light coupling submerged plant pond enters charcoal pond again by the valve opened on connecting pipe; Reuse clean water basin are entered after the water outlet of charcoal pond process reaches surface water 4 class water quality standard;
(3) consumption of softening water needed for the enterprise of industrial park, extract appropriate water from reuse clean water basin and send into nanofiltration softening installation, water outlet meets domestic hot water boiler water quality standard, and hardness, lower than 0.03mmol/L, enters softening water tank;
(4) consumption of de-mineralized water needed for the enterprise of industrial park, extract appropriate water from softening water tank and send into reverse osmosis unit, water outlet meets low pressure steam boiler water quality standards, enters sweet-water tank;
(5) according to the consumption of industrial park enterprise ultrapure water, extract appropriate water send into electric desalination plant from sweet-water tank, water outlet can meet enterprise of electronic semi-conductor ultrapure water water quality and high-duty boiler water quality standard, enters ultrapure water tank;
(6) water in reuse clean water basin, softening water tank, sweet-water tank and ultrapure water tank is delivered to garden water spot with pipeline or water trolley respectively.
2. the deep treatment method of a kind of industrial park according to claim 1 biochemical tail water grading recycle, it is characterized in that, the source of artificial light of described source of artificial light coupling submerged plant treating pond is the multiple LED light source be made up of red LED light and blue LED light, the ratio of red light and blue light is (5 ~ 10): 1, and submerged plant used is the verticillate submerged plant of narrow leaf.
3. the deep treatment method of a kind of industrial park according to claim 1 biochemical tail water grading recycle, it is characterized in that, in described step (3), nanofiltration softening installation select molecular weight cut-off be 300 ~ 400 nanofiltration membrane, the rate of recovery controls 75 ~ 85%, and the dense water of 15 ~ 25% turns back to reuse clean water basin.
4. the deep treatment method of a kind of industrial park according to claim 1 biochemical tail water grading recycle, it is characterized in that, in described step (4), rolling low-pressure reverse osmosis membrane selected by reverse osmosis unit, the rate of recovery of reverse osmosis controls 80 ~ 85%, and dense water turns back to softening water tank.
5. the deep treatment method of a kind of industrial park according to claim 1 biochemical tail water grading recycle, it is characterized in that, in described step (5), electric desalination plant module selects rolling or plate and frame, operation scheme is dense water circulation type, and pole water returns softening water tank.
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| CN103922537B (en) * | 2014-04-04 | 2015-07-15 | 西安西热水务环保有限公司 | System for recycling wastewater from circulating cooling water by adopting membrane process |
| CN105399287B (en) * | 2015-12-30 | 2019-01-22 | 北京赛科康仑环保科技有限公司 | A kind of organic wastewater with difficult degradation thereby integrated treatment and Zero discharge treatment method and its system |
| CN112591987B (en) * | 2020-11-24 | 2023-01-13 | 江苏拓孚工程设计研究有限公司 | Intelligent combined pool for reclaimed water recycling and reclaimed water recycling method |
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| JP2002136279A (en) * | 2000-11-02 | 2002-05-14 | Toyama Prefecture | Cold-insulating material and method for producing the same |
| KR101109762B1 (en) * | 2009-06-29 | 2012-02-15 | 유림엔마텍(주) | water treatment method and the apparatus for purified water using natural water |
| CN101708930B (en) * | 2009-11-23 | 2012-07-25 | 南京大学 | System and method for respectively recovering fermented industrial waste water according to quality |
| CN202164173U (en) * | 2011-07-13 | 2012-03-14 | 南京师范大学 | Water environment ecological restoration and purification device based on solar energy and LED (light-emitting diode) light source |
| CN102417278B (en) * | 2011-11-28 | 2013-09-18 | 杜建强 | Ecological wetland treatment system for treating industrial tail water |
| CN102616962B (en) * | 2012-03-30 | 2015-05-06 | 中国石油化工股份有限公司 | Deep stage treatment method for industrial wastewater |
| CN103342432B (en) * | 2013-07-23 | 2015-10-28 | 南京工业大学 | A kind of near zero release technique of brine waste |
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