CN202849215U - Coking wastewater deep treatment device - Google Patents
Coking wastewater deep treatment device Download PDFInfo
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- CN202849215U CN202849215U CN 201220553355 CN201220553355U CN202849215U CN 202849215 U CN202849215 U CN 202849215U CN 201220553355 CN201220553355 CN 201220553355 CN 201220553355 U CN201220553355 U CN 201220553355U CN 202849215 U CN202849215 U CN 202849215U
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Abstract
The utility model discloses a coking wastewater deep treatment device which comprises an MBR (membrane bioreactor), a reclaimed water tank and a reverse osmosis device. The coking wastewater deep treatment device is characterized in that the water inlet of the MBR is connected with a coking wastewater input pipe, the aeration hole of the MBR is connected with an aeration pump, the water outlet of the MBR is connected with the inlet of the reclaimed water tank through a sucking pump, and the outlet of the reclaimed water tank is connected with the raw water input end of the reverse osmosis device. According to the coking wastewater deep treatment device, the process condition of biological oxidization is greatly improved, the organic matter degradation efficiency is increased, a secondary sedimentation tank is saved, the problem of secondary pollution caused by introduction of other chemical agents and the like is avoided, the coking wastewater treatment cost is lowered, a large quantity of production water is saved, partial suspended solids are intercepted, and the effect of excellent and stable effluent is achieved.
Description
Technical field
The utility model relates to environmental technology field, concrete refers to a kind of coking wastewater deep treatment device.
Background technology
Coking chemical waste water is a kind of trade effluent of generally acknowledged difficult for biological degradation, its difficulty is that the biodegradability of waste water is poor, except inorganic pollution beyond the region of objective existences such as ammonia, cyanogen and thiocyanates, also contain the heterocycle such as phenols, naphthalene, pyridine, quinoline and polycyclc aromatic compound (PAHS) etc. and be difficult to biodegradable goods and materials, these materials can produce long-range effects to environment, and the studied carcinogenic substance that turns out to be of part, ammonia nitrogen in high density has very strong restraining effect to microorganism active in addition, and Nitrogen removal effect is not good.At present, coking wastewater processing system generally includes conventional bi-level treatment.Coagulation refers to recycle pollutent from high-concentration sewage, its technique comprises ammonia distillation, ammoniacal liquor dephenolize, whole cold water decyanation etc., is preprocessing process.Second-stage treatment then refers to the phenol-cyanogen sewage harmless treatment, take activated sludge process as main, also comprises enhanced biological treatment technology etc.Because further the advanced treatment somewhat expensive makes domestic many coke-oven plants hang back, so most coking chemical waste water has only just directly discharged through conventional bi-level treatment.But waste water through after the above-mentioned processing wherein some poisonous and harmful substances (prussiate, COD and heterogeneous ring compound etc.) still do not reach the emission standard that country allows.
At present, the outstanding problem that advanced treatment process of coking waste water exists is as follows: one, by the chemical agent advanced treatment of waste water, and the method may be introduced secondary pollution, and perhaps causing increases follow-up desalination expense; Two, coking chemical waste water is used for wet quenching or blast furnace slag flushing, but transfer has occured Pollutants in Wastewater, operating environment is poor simultaneously, has the problems such as pipe network and equipment corrosion; Three, the dense water whereabouts after the embrane method desalination advanced treatment also is to need the problem of solution badly.
In order to promote industrial structure upgrading, standard industry healthy development, to promote energy-saving and emission-reduction and technical progress, China Ministry of Industry and Information has promulgated No. 15 files of " coking industry entry criteria (2008 revision) " on December 19th, 2008, and clearly define: will recycle after the wastewater containing phenol and cyanide processing is qualified, must not efflux.Therefore, it is to improve the waste water circulation rate, reduce wastewater disposition, reduce the optimal selection of new water consumption that coking chemical waste water is carried out advanced treatment and reuse, and seek a kind of efficiently, advanced treatment and reuse technology are the active demands of present coking wastewater deep treatment process cheaply.
Summary of the invention
The purpose of this utility model provides and a kind ofly can reduce the Treatment of Coking Effluent cost, saves a large amount of water of productive use, economic, practical, efficient coking wastewater deep treatment device.
For achieving the above object, the coking wastewater deep treatment device that the utility model provides, it comprises MBR membrane bioreactor, middle tank and reverse osmosis unit, its special character is: the water-in of described MBR membrane bioreactor links to each other with the coking chemical waste water input tube, the aeration opening of described MBR membrane bioreactor links to each other with aeration pump, the water outlet of described MBR membrane bioreactor links to each other with the import of middle tank by suction pump, and the outlet of described middle tank links to each other with the former water input terminus of described reverse osmosis unit by topping-up pump.
As preferred version, described MBR membrane bioreactor comprises the reaction tank body, the water-in of described reaction tank body links to each other with the coking chemical waste water input tube, be set side by side with immersion MBR membrane module in the described reaction tank body, the aeration opening of described immersion MBR membrane module links to each other with aeration pump, the water outlet of described MBR membrane module links to each other with suction pump, and the sewage draining exit of described reaction tank body links to each other with residual sea water pump.
Compared with prior art, the utlity model has following advantage:
One, this device utilize immersion MBR membrane bioreactor and reverse osmosis unit, and be reasonable in design, compact, simple to operate, cost is low, and suitability is strong, has very strong engineering using value.
Two, this device improves the processing condition of bio-oxidation greatly, improved organic matter degradation efficient, saved simultaneously second pond, avoided causing by introducing other chemical agents etc. the problem of secondary pollution, simultaneously, also realize reduction Treatment of Coking Effluent cost, saved a large amount of water of productive use, simultaneously also hold back the partial suspended thing, reach good, the stable effect of water outlet.
Description of drawings
Fig. 1 is the structural representation of coking wastewater deep treatment device of the present utility model.
Fig. 2 is the main TV structure synoptic diagram of MBR membrane bioreactor among Fig. 1.
Fig. 3 is that advanced treatment apparatus shown in Figure 1 is to the UV spectral scan figure before and after the Treatment of Coking Effluent.
Among the figure: MBR membrane bioreactor 1(wherein: reaction tank body 101, immersion MBR membrane module 102, residual sea water pump 103), middle tank 2, reverse osmosis unit 3, suction pump 4, topping-up pump 5, aeration pump 6, coking chemical waste water input tube 7, mud vent pipe 8, produce water discharge pipe 9, concentrated water drainage goes out pipe 10, coking water outlet UV spectral scan curve m, coking water inlet UV spectral scan curve n.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Coking wastewater deep treatment device as shown in Figure 1, comprise MBR membrane bioreactor 1, middle tank 2 and reverse osmosis unit 3, the water-in of MBR membrane bioreactor 1 links to each other with coking chemical waste water input tube 7, the aeration opening of MBR membrane bioreactor 1 links to each other with aeration pump 6, the water outlet of MBR membrane bioreactor 1 links to each other with the import of middle tank 2 by suction pump 4, and the outlet of middle tank 2 links to each other with the former water input terminus of reverse osmosis unit 3 by topping-up pump 5.
As shown in Figure 2, above-mentioned MBR membrane bioreactor 1 comprises reaction tank body 101, the water-in of described reaction tank body 101 links to each other with coking chemical waste water input tube 7, be set side by side with immersion MBR membrane module 102 in the described reaction tank body 101, the aeration opening of described immersion MBR membrane module 102 links to each other with aeration pump 6, the water outlet of described MBR membrane module 102 links to each other with suction pump 4, and the sewage draining exit of described reaction tank body 101 links to each other with residual sea water pump 103.
The principle of work of above-mentioned coking wastewater deep treatment device is as follows: MBR membrane bioreactor 1 mainly by high-concentration activated sludge to the further biochemical degradation of micromolecular compound, also hold back simultaneously the partial suspended thing.Reverse osmosis unit 3 makes effluent quality can satisfy the requirement of different grades water mainly to the further advanced treatment of waste water, sterilization, desalination, removal part COD.The inferior grade water can directly be used as from MBR membrane bioreactor 1 waste water out, such as defoamer water, coal yard dust suppression etc. in the deepening process; Go out pipe 10 dense water out from the concentrated water drainage of reverse osmosis unit 3 and can be directly used in blast-furnace slag cooling, flushing cinder water, coal yard dust suppression etc., but make technique recirculated cooling water or other high-grade water from the product water discharge pipe 9 product water reuse out of reverse osmosis unit 3.
The specific works process of above-mentioned coking wastewater deep treatment device is as follows: the waste water via coking chemical waste water input tube 7 enters MBR membrane bioreactor 1.MBR membrane bioreactor 1 adopts the immersion structure, and the aeration form adopts aeration pump 6 continuous aerations, and aeration intensity is controlled at 0.15 ~ 0.5m
3/ h, dissolved oxygen (DO) concentration is 1.5 ~ 8mg/L, the film cleaning interval is 10 ~ 15d.Mud adopts the mud that Aerobic Pond refluxes in coke-oven plant's biochemical treatment process, purpose be by high-concentration activated sludge to the further biochemical degradation of micromolecular compound, also hold back the partial suspended thing simultaneously.After waste water entered MBR membrane bioreactor 1, through the water after aerobic aeration and the biological treatment, by extracting out behind the membrane filtration, mud was then sucked by residual sea water pump 103 and discharges by suction pump 4.
The waste water of being extracted out by suction pump 4 can directly be used as the inferior grade water, such as defoamer water, coal yard dust suppression etc. in the deepening process, also can continue advanced treatment and enter middle tank 2, it mainly plays the regulating pondage effect, waste water through middle tank 2 with regulating pondage, enter reverse osmosis unit 3 by topping-up pump 5 again, topping-up pump 5 provides reverse osmosis membrane pressure, satisfies the operation of reverse osmosis unit 3.Reverse osmosis unit 3 adopts modularized equipment, and purpose is to the further advanced treatment desalination of waste water, removes part COD, makes effluent quality can satisfy the requirement of different grades water.Be used for blast-furnace slag cooling, flushing cinder water, coal yard dust suppression etc. from reverse osmosis unit 3 dense water out, from reverse osmosis unit 3 product water out as high-grade water, such as the moisturizing of circulating cooling system etc.
Figure 3 shows that in the utility model implementation process, the UV spectral scan curve (being the UV scanning curve) before and after the Treatment of Coking Effluent, among the figure: m is coking water outlet UV spectral scan curve, n is coking water inlet UV spectral scan curve.Can find out that from the curve of Fig. 3 after the utility model device advanced treatment, the absorbancy of coking chemical waste water significantly reduces, illustrate that most of organism in the waste water is degraded or mineralising is subdued.
The utility model has carried out the lab scale test of 25L/h in Wuhan Iron and Steel Plant research institute Metallurgical Waste Water recycle laboratory, experiment effect proves, this device can satisfy the requirement of coking wastewater deep treatment, the COD clearance can reach more than 50%, waste water between the specific conductivity 300-2000 μ s/cm, system's desalination rate can reach 60 ~ 90%, gets the water rate about 30 ~ 70%.
Claims (2)
1. coking wastewater deep treatment device, comprise MBR membrane bioreactor (1), middle tank (2) and reverse osmosis unit (3), it is characterized in that: the water-in of described MBR membrane bioreactor (1) links to each other with coking chemical waste water input tube (7), the aeration opening of described MBR membrane bioreactor (1) links to each other with aeration pump (6), the water outlet of described MBR membrane bioreactor (1) links to each other with the import of middle tank (2) by suction pump (4), and the outlet of described middle tank (2) links to each other with the former water input terminus of described reverse osmosis unit (3) by topping-up pump (5).
2. coking wastewater deep treatment device according to claim 1, it is characterized in that: described MBR membrane bioreactor (1) comprises reaction tank body (101), the water-in of described reaction tank body (101) links to each other with coking chemical waste water input tube (7), be set side by side with immersion MBR membrane module (102) in the described reaction tank body (101), the aeration opening of described immersion MBR membrane module (102) links to each other with aeration pump (6), the water outlet of described MBR membrane module (102) links to each other with suction pump (4), and the sewage draining exit of described reaction tank body (101) links to each other with residual sea water pump (103).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553355 CN202849215U (en) | 2012-10-26 | 2012-10-26 | Coking wastewater deep treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553355 CN202849215U (en) | 2012-10-26 | 2012-10-26 | Coking wastewater deep treatment device |
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| Publication Number | Publication Date |
|---|---|
| CN202849215U true CN202849215U (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220553355 Expired - Lifetime CN202849215U (en) | 2012-10-26 | 2012-10-26 | Coking wastewater deep treatment device |
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| CN (1) | CN202849215U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017037254A1 (en) * | 2015-09-04 | 2017-03-09 | Thyssenkrupp Industrial Solutions Ag | Method for treating industrial wastewater containing organic compounds |
-
2012
- 2012-10-26 CN CN 201220553355 patent/CN202849215U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017037254A1 (en) * | 2015-09-04 | 2017-03-09 | Thyssenkrupp Industrial Solutions Ag | Method for treating industrial wastewater containing organic compounds |
| CN108367955A (en) * | 2015-09-04 | 2018-08-03 | 蒂森克虏伯工业解决方案股份公司 | Method for handling the industrial wastewater containing organic compound |
| CN108367955B (en) * | 2015-09-04 | 2022-03-04 | 蒂森克虏伯工业解决方案股份公司 | Method for treating industrial waste water containing organic compounds |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170717 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: WUHAN IRON AND STEEL Co.,Ltd. Address before: 430080 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: WUHAN IRON AND STEEL (GROUP) Corp. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |
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| CX01 | Expiry of patent term |