CN201901623U - Device for advanced treatment and complete recycle of coking waste water - Google Patents
Device for advanced treatment and complete recycle of coking waste water Download PDFInfo
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- CN201901623U CN201901623U CN2010202310495U CN201020231049U CN201901623U CN 201901623 U CN201901623 U CN 201901623U CN 2010202310495 U CN2010202310495 U CN 2010202310495U CN 201020231049 U CN201020231049 U CN 201020231049U CN 201901623 U CN201901623 U CN 201901623U
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Abstract
The utility model discloses a device for the advanced treatment and the complete recycle of coking waste water, which comprises a pretreatment system and a biochemical treatment system, and is characterized in that: the device also comprises a membrane advanced treatment system consisting of a membrane bioreactor, an oxidation treatment component and a reverse osmosis membrane treatment component, and a thick water evaporating and crystallizing system; an outlet of the coking waste water subjected to pretreatment and biochemical treatment is connected with the membrane bioreactor; a water outlet of the membrane bioreactor is connected with the oxidation treatment component; the water outlet of an oxidation treatment system is connected with the reverse osmosis membrane treatment component; one water outlet of the reverse osmosis membrane treatment component is connected with the thick water evaporating and crystallizing system; and the other outlet of the reverse osmosis membrane treatment component is connected with a recycling water tank. When the device is used, the coking waste water is subjected to advanced treatment to realize zero discharge; and the device is a novel technical treatment device which degrades various pollutants in the coking waste water and completely recycles treated water.
Description
Technical field
The utility model relates to the technology for treating industrial waste water field, relates in particular to a kind of coking wastewater deep treatment and full reclamation set.
Background technology
At present, Treatment of Coking Effluent generally adopts A/O biological denitrificaion treatment technology, handles back sewage quality index and can reach national specified discharge standard, and part is back to wet quenching, dedusting, coal gas water seal equal turbidity circulating water system and makes make up water.And the advanced treatment of coking chemical waste water is generally adopted means such as sand filtration, biological filter, coagulating treatment, although water outlet COD is controlled at about 100mg/L, suspension content can not satisfy and produce water purification water water quality requirement about 30mg/L; The employing activated carbon filtration that has can be removed COD and suspended substance in the water effectively, and COD is dropped to below the 60mg/L, and suspension content but does not almost have treatment effect to deliquescent solid saltiness below 5mg/L, so this technology does not have promotional value.Must adopt reverse osmosis membrane to separate in order to remove soluble solid, and the concentrated solution after separating can't discharge because of COD and salt height, unique place to go is to be sprayed onto coal yard or as the make up water of wet quenching, but the water of coal yard is limited, many coke-oven plants have changed dry quenching(of coke) into, so need a Treatment of Coking Effluent reuse and reach the technology of zero release.
The utility model content
Technical problem to be solved in the utility model provides a kind of coking wastewater deep treatment device, this device can reduce all kinds of pollutant loads such as COD and suspended substance in the waste water significantly, coking chemical waste water is carried out advanced treatment and reuse, make system realize zero release.
Technical problem to be solved in the utility model is achieved through the following technical solutions:
A kind of coking wastewater deep treatment and full reclamation set, comprise pretreatment system and biochemical treatment system, it is characterized in that: described device also comprise by membrane bioreactor (Membrane BioReactor, MBR), oxidization processing system and reverse osmosis membrane processing system and dense water evaporation and crystallization system;
Outlet through the coking chemical waste water after pre-treatment and the biochemical treatment is connected with described membrane bioreactor; The water outlet of described membrane bioreactor is connected with described oxidization processing system; The water outlet of described oxidization processing system is connected water outlet after reverse osmosis feedwater pump and high-pressure pump series connection pressurization with described reverse osmosis membrane processing system; A water outlet of described reverse osmosis membrane processing system is connected with described dense water evaporation and crystallization system; Another outlet of described reverse osmosis membrane processing system is connected with the reuse water tank.
Described MBR membrane bioreactor belongs to hollow fiber ultrafiltration membrane, the immersion structure.
Described pretreatment system comprises grease removal tank, flotation cell and equalizing tank; Biochemical treatment system comprises anaerobic pond, anoxic pond, Aerobic Pond and reflux sedimentation tank.
Described reverse osmosis membrane filtration adopts two cover systems, and described two cover systems are connected in series.
The described first cover reverse osmosis system operating pressure, 2～3.5MPa, filtering accuracy 0.001 μ m; The concentrated solution of the first cover reverse osmosis system enters the second cover reverse osmosis system, system works pressure 3.5～4.0Mpa.Final concentrated solution accounts for below 10% of the entire treatment water yield; The concentrated solution water quality of the described second cover reverse osmosis system is: CODcr≤450mg/L, saltiness≤40000mg/L.
Anaerobic pond has related parameter: hydraulic detention time 8～12h, P are 1mg/L, and water temperature is 30 ℃.
Anoxic pond has related parameter: hydraulic detention time 16～20h, sewage backflow are than 2～3 times, and P is 1mg/L, 25～30 ℃ of water temperatures, pH value 7～8.
Aerobic Pond has related parameter: hydraulic detention time 32～36h, 2～3 times of return sludge ratios, water outlet phosphorus content 0.5～1mg/L, 25～30 ℃ of water temperatures, PH7～8, dissolved oxygen 2～4mg/L.
Pretreatment system adopts heavy oil and the oil in water emulsion in the air-float method removal waste water, regulates the ununiformity of the various coking chemical waste water water yields and water quality, and main purpose is to be that suitable condition is created in follow-up biochemical treatment.Its main treatment facility comprises grease removal tank, flotation cell, equalizing tank etc.
The biochemical treatment main purpose is that the biochemical reaction of active sludge comes the poisonous and harmful substances in the treatment of Coking Wastewater, reduces the pollutant loads such as COD in the waste water.The principal facility of biochemical treatment has anaerobic pond, anoxic pond, Aerobic Pond, reflux sedimentation tank, gas blower, medicine machine etc.
Coking chemical waste water is through entering the advanced treatment operation of embrane method after the biochemical treatment, comprising MBR (Membrane BioReactor) membrane bioreactor, oxidation operation and reverse osmosis membrane assembly.The Aerobic Pond mixed solution of biochemical process enters MBR, and it is the raw water of advanced treatment process that MBR produces the water outlet of water after as biochemical treatment, and the MBR of present technique is the preprocessing means as advanced treatment; MBR belongs to hollow fiber ultrafiltration membrane, the immersion structure, and its efficient crown_interception can all kinds of bacterial classifications of effectively catching, and it is trapped in the bio-reactor fully, make biochemical reaction smooth, effectively remove corresponding pollutent, avoid the loss of mud.Oxidation operation can adopt ozone, hydrogen peroxide, chlorine or clorox, and oxidation is that the organism in the water is played the intensive oxidative degradation, reduces the COD in the waste water, also decolouring is had certain effect.The effect of oxidation is exactly to protect reverse osmosis membrane assembly, makes its pollution level that reduces the film surface as much as possible, improves the work period and the producing water ratio of film.Wherein ozone and hydrogen peroxide reverse osmosis membrane (Reveser Osmosis is called for short RO) short because of the timeliness of the good residual medicine of its reaction effect, that more can not damage the downstream is preferred.When adopting other oxygenant, need before RO, add sodium bisulfite or S-WAT neutralizes, with protection RO film.
RO is to be motivating force with pressure, and utilizes the reverse osmosis membrane can only permeate water and can not see through the selectivity of solute and make the technology of solute and water sepn in the aqueous solution.Reverse osmosis membrane assembly produces water can satisfy the clean circulating water system water quality requirement of production, two cover RO films are adopted in this technological design, the first cover RO will produce the water rate of recovery and accomplish 75%, the second cover RO will produce the total yield of water and accomplish more than 90%, remaining about 10% a spot of concentrated solution utilizes evaporative crystallization, accomplishes zero release, in order to save processing costs, also can take out a part of concentrated solution and be sprayed onto coal yard, also can be used as the make up water of wet quenching.
The utlity model has following advantage:
That the utility model adopts is biochemical, oxidation adds that the method that membrane separation technique and evaporation combine carries out advanced treatment and reach zero release coking chemical waste water, be a kind of with each pollutant in the coking chemical waste water degraded and will handle the processing new technology of water complete-reclaiming afterwards; Adopt MBR to improve the biochemical sludge concentration and the volumetric loading of biochemical reaction tank, the cancellation coagulating treatment has been saved occupation of land; But the water outlet direct reuse is realized the utilization again of water resources and the zero release of coking chemical waste water in producing clean circulating water system water as a supplement.
Description of drawings
Fig. 1 is a device schematic flow sheet of the present utility model
As shown in the figure, 1-MBR membrane bioreactor, 2-oxidization processing system, 3-reverse osmosis membrane processing system, the dense water evaporation and crystallization system of 4-, 5-reuse water tank, 6-pretreatment system, 7-biochemical treatment system.
Embodiment
The utility model is described in further detail below in conjunction with Figure of description.
A kind of coking wastewater deep treatment and full reclamation set comprise pretreatment system 6 and biochemical treatment system 7, it is characterized in that: described device also comprises by MBR membrane reactor 1, oxidization processing system 2 and reverse osmosis membrane processing system 3 and dense water evaporation and crystallization system 4;
Outlet through the coking chemical waste water after pre-treatment and the biochemical treatment is connected with described MBR membrane bioreactor 1; The water outlet of described membrane bioreactor 1 is connected with described oxidization processing system 2; The water outlet of described oxidization processing system 2 is connected water outlet after reverse osmosis feedwater pump and high-pressure pump series connection pressurization with described reverse osmosis membrane processing system 3; A water outlet of described reverse osmosis membrane processing system 3 is connected with described dense water evaporation and crystallization system 4; Another outlet of described reverse osmosis membrane processing system 3 is connected with reuse water tank 5.
Described MBR membrane bioreactor belongs to hollow fiber ultrafiltration membrane, the immersion structure.
Described pretreatment system comprises grease removal tank, flotation cell and equalizing tank; Biochemical treatment system comprises anaerobic pond, anoxic pond, Aerobic Pond and reflux sedimentation tank.
Described reverse osmosis membrane filtration adopts two cover systems, and described two cover systems are connected in series.
The described first cover reverse osmosis system operating pressure, 2～3.5MPa, filtering accuracy 0.001 μ m; The concentrated solution of the first cover reverse osmosis system enters the second cover reverse osmosis system, system works pressure 3.5～4.0Mpa.Final concentrated solution accounts for below 10% of the entire treatment water yield; The concentrated solution water quality of the described second cover reverse osmosis system is: CODcr≤450mg/L, saltiness≤40000mg/L.
Anaerobic pond has related parameter: hydraulic detention time 8～12h, P are 1mg/L, and water temperature is 30 ℃.
Anoxic pond has related parameter: hydraulic detention time 16～20h, sewage backflow are than 2～3 times, and P is 1mg/L, 25～30 ℃ of water temperatures, pH value 7～8.
Aerobic Pond has related parameter: hydraulic detention time 32～36h, 2～3 times of return sludge ratios, water outlet phosphorus content 0.5～1mg/L, 25～30 ℃ of water temperatures, PH7～8, dissolved oxygen 2～4mg/L.
Coking chemical waste water water-quality COD Cr≤4000mg/L, NH
3-N≤250mg/L, SS≤300mg/L, phenol≤650mg/L, prussiate≤15mg/L remove most COD, SS, NH in the water through pre-treatment, biochemical treatment
3Pollutents such as-N.
MBR water outlet leading indicator is generally CODCr≤150mg/L, NH
3-N≤5mg/L, SS≤5mg/L, phenol≤0.5mg/L, prussiate≤0.5mg/L; Again through oxidation, remove the middle part of anhydrating and be difficult to pollutents such as biodegradable COD, reduce macromolecule contaminant and being partly dissolved property solids content in the water by reverse osmosis membrane separation at last, the final back water-quality guideline of handling reaches CODcr≤20mg/L, phenol≤0.2mg/L, prussiate≤0.2mg/L, NH
3-N≤3mg/L, oil can not detect, SS can not detect, PH6.5～7.5, saltiness≤150mg/L, hardness≤10mg/L are (with CaCO
3Meter), satisfy the clean circulating water quality requirement of production.Described reverse osmosis membrane employing cross flow filter, concentrated solution account for the processing water yield～10%, concentrated solution water quality: CODcr≤450mg/L, saltiness≤40000mg/L.Concentrated solution adopts evaporative crystallization, and its solid can send the refuse tip, and phlegma can reuse.
The unit type that relates in the utility model all can be purchased according to wastewater treatment capacity.
For example:, produce coking chemical waste water 91m for producing 1700000 tons of scale coke-oven plants of coke per year
3/ h, recirculated water sewer 67m
3/ h, handling the water yield so is 158m
3/ h.Biochemical system adopts A/O internal recycle biological denitrificaion treatment technology, and biochemical treatment (MBR) aquifer yield is 158m
3/ h, water-quality COD Cr≤150mg/L, NH
3-N≤5mg/L, SS≤5mg/L, phenol≤≤ 0.5mg/L, prussiate≤0.5mg/L, reach national comprehensive discharge secondary standard.And then through oxidation unit, finish the oxygenolysis that is difficult to pollutents such as biological degradation COD is handled, water outlet is after reverse osmosis feedwater pump and high-pressure pump series connection pressurization, enter reverse-osmosis membrane element, macromolecule contaminant in the water and being partly dissolved property solids content are separated in the concentrated solution, and reverse osmosis membrane assembly produces the water water-quality guideline and reaches CODCr≤20mg/L, phenol≤0.2mg/L, prussiate≤0.2mg/L, NH
3-N≤3mg/L, oil can not detect, SS can not detect, PH6.5～7.5, saltiness≤150mg/L, hardness≤10mg/L are (with CaCO
3Meter), satisfy " urban sewage reutilization-process water water quality " requirement (GB/T19923-2005) simultaneously.The reverse osmosis unit water production rate accounts for and handles the water yield about 90% is 142m
3/ h is back to and produces clean circulating water system water as a supplement, and isolating concentrated solution accounts for the processing water yield about 10% and is about 16m
3/ h adopts evaporative crystallization, and the crystalline solid can send the refuse tip, and the water of condensation that evaporation unit produces can be used as the make up water of recirculating cooling water system equally, makes system accomplish zero release.
Claims (6)
1. a coking wastewater deep treatment and full reclamation set comprise pretreatment system and biochemical treatment system, it is characterized in that: described device also comprises by membrane bioreactor, oxidization processing system and reverse osmosis membrane processing system and dense water evaporation and crystallization system;
Outlet through the coking chemical waste water after pre-treatment and the biochemical treatment is connected with described membrane bioreactor; The water outlet of described membrane bioreactor is connected with described oxidization processing system; The water outlet of described oxidization processing system is connected with high-pressure pump with the reverse osmosis feedwater pump successively, and the high-pressure pump water outlet is connected with described reverse osmosis membrane processing system;
A water outlet of described reverse osmosis membrane processing system is connected with described dense water evaporation and crystallization system; Another outlet of described reverse osmosis membrane processing system is connected with the reuse water tank.
2. coking wastewater deep treatment as claimed in claim 1 and full reclamation set is characterized in that: described membrane bioreactor belongs to hollow fiber ultrafiltration membrane.
3. coking wastewater deep treatment as claimed in claim 1 and full reclamation set is characterized in that: described pretreatment system comprises grease removal tank, equalizing tank and flotation cell; Described grease removal tank, equalizing tank and flotation cell are connected successively.
4. coking wastewater deep treatment as claimed in claim 1 and full reclamation set is characterized in that: described biochemical treatment system comprises anaerobic pond, anoxic pond, Aerobic Pond and reflux sedimentation tank; Described anaerobic pond, anoxic pond, Aerobic Pond and reflux sedimentation tank are connected successively.
5. coking wastewater deep treatment as claimed in claim 1 and full reclamation set is characterized in that: described reverse osmosis membrane filtration adopts two cover systems, and described two cover systems are connected in series.
6. coking wastewater deep treatment as claimed in claim 1 and full reclamation set is characterized in that: described oxidization processing system is the pneumatogen that contains ozone, hydrogen peroxide, chlorine or clorox.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202310495U CN201901623U (en) | 2010-06-21 | 2010-06-21 | Device for advanced treatment and complete recycle of coking waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202310495U CN201901623U (en) | 2010-06-21 | 2010-06-21 | Device for advanced treatment and complete recycle of coking waste water |
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| Publication Number | Publication Date |
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| CN201901623U true CN201901623U (en) | 2011-07-20 |
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| CN2010202310495U Expired - Fee Related CN201901623U (en) | 2010-06-21 | 2010-06-21 | Device for advanced treatment and complete recycle of coking waste water |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786181A (en) * | 2012-03-23 | 2012-11-21 | 昆明金泽实业有限公司 | Operational research of biofortification CDRO integration technology in phenol-containing waste water treatment |
| CN103319048A (en) * | 2013-06-29 | 2013-09-25 | 惠州市众惠环保工程有限公司 | Method for recycling moisture from high-concentration organic sewage |
| CN105668890A (en) * | 2016-01-14 | 2016-06-15 | 合肥工业大学 | Treatment method of refractory organic wastewater |
| CN106517642A (en) * | 2016-10-31 | 2017-03-22 | 上海明诺环境科技有限公司 | Zero discharge treatment method of wastewater from plant for methanol to aromatic |
| CN113772893A (en) * | 2021-09-27 | 2021-12-10 | 上海沁泰环境科技有限公司 | Treatment process of alcohol amine organic nitrogen wastewater |
-
2010
- 2010-06-21 CN CN2010202310495U patent/CN201901623U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786181A (en) * | 2012-03-23 | 2012-11-21 | 昆明金泽实业有限公司 | Operational research of biofortification CDRO integration technology in phenol-containing waste water treatment |
| CN103319048A (en) * | 2013-06-29 | 2013-09-25 | 惠州市众惠环保工程有限公司 | Method for recycling moisture from high-concentration organic sewage |
| CN105668890A (en) * | 2016-01-14 | 2016-06-15 | 合肥工业大学 | Treatment method of refractory organic wastewater |
| CN105668890B (en) * | 2016-01-14 | 2019-04-05 | 合肥工业大学 | A kind of processing method of organic wastewater with difficult degradation thereby |
| CN106517642A (en) * | 2016-10-31 | 2017-03-22 | 上海明诺环境科技有限公司 | Zero discharge treatment method of wastewater from plant for methanol to aromatic |
| CN113772893A (en) * | 2021-09-27 | 2021-12-10 | 上海沁泰环境科技有限公司 | Treatment process of alcohol amine organic nitrogen wastewater |
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Granted publication date: 20110720 Termination date: 20120621 |