CN203960001U - A kind of high ammonia nitrogen coking wastewater processing system - Google Patents
A kind of high ammonia nitrogen coking wastewater processing system Download PDFInfo
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- CN203960001U CN203960001U CN201420311343.5U CN201420311343U CN203960001U CN 203960001 U CN203960001 U CN 203960001U CN 201420311343 U CN201420311343 U CN 201420311343U CN 203960001 U CN203960001 U CN 203960001U
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Abstract
The utility model discloses a kind of high ammonia nitrogen coking wastewater processing system, it comprises the materialization treatment facility being made up of grille well, oil trap, air flotation pool, hypergravity denitrification reactor and decyanation pond, the biochemical processing device being made up of anaerobic fixed film reactor, anoxic pond, Aerobic Pond, second pond and contact-oxidation pool and the advanced treatment device being made up of coagulative precipitation tank, sand filter.This system combines physics, chemistry and biochemical reaction, can effectively remove the hazardous and noxious substances such as volatile phenol in coking chemical waste water, mineral oil, prussiate, phenol and benzene compounds, ammonia nitrogen, not only reduce the processing cost of coking chemical waste water, and treatment process is reasonable, purification efficiency is high, and can realize wastewater utilization, water outlet can reach the first discharge standard that " integrated wastewater discharge standard " (GB8978-1996) specifies.
Description
Technical field
The utility model relates to a kind of Waste Water Treatment, and definite saying relates to a kind of high ammonia nitrogen coking wastewater processing system for coking chemical waste water is processed.
Background technology
In coking plant production process, can produce a large amount of coking chemical waste waters, the waste water that includes the gas final cold water that produces in remained ammonia after coking, gas purification process and crude benzol Separation of Water in this coking chemical waste water and produce in the treating process such as tar, crude benzol, its main component has volatile phenol, mineral oil, prussiate, phenol and benzene compounds, ammonia nitrogen etc., because coking chemical waste water contains a large amount of hazardous and noxious substances, belong to the heavily contaminated trade effluent that pollution concentration is high, pollutant component is complicated, the coking chemical waste water of discharge beyond standards can cause serious pollution to environment.
Existing coking enterprise mainly adopts physico-chemical process or biochemical process for Treatment of Coking Effluent, but the single physico-chemical process Treatment of Wastewater in Coking of using, its processing cost is higher, be difficult to apply, and single employing biochemical process Treatment of Wastewater in Coking, because the biodegradability of coking chemical waste water is poor, cause ammonia-nitrogen content and COD value in coking chemical waste water after treatment to be difficult to up to standard.
Utility model content
The purpose of this utility model is: the high ammonia nitrogen coking wastewater processing system that a kind of processing cost is low, treatment effect is good is provided.
The technical solution of the utility model is: a kind of high ammonia nitrogen coking wastewater processing system, comprises materialization treatment facility, biochemical processing device and advanced treatment device; Wherein, materialization treatment facility comprises
Grille well, for filtering macrobead floating matter and the solid sundries of coking chemical waste water;
Oil trap, is communicated with described grille well, for removing the suspended state fluid of coking chemical waste water;
Air flotation pool, is communicated with described oil trap, removes solia particle and emulsification state fluid and part COD and BOD in coking chemical waste water by the pressurization, the air-dissolving apparatus that arrange on it;
Hypergravity denitrification reactor, which is provided with gas-liquid and imports and exports, and the coking chemical waste water being come by air flotation pool enters in this hypergravity denitrification reactor after being adjusted to alkalescence together with air, by the ammonia nitrogen in the filler wind-force stripping coking chemical waste water of the high speed rotating established in it; And
Decyanation pond, is communicated with described hypergravity denitrification reactor, and it is by adding medicament and regulating the pH value of coking chemical waste water can remove prussiate and the part COD in coking chemical waste water;
Described biochemical processing device comprises
Anaerobic fixed film reactor, is communicated with described decyanation pond, and it is established the microbial film that filling surface adheres to and improved the biodegradability of coking chemical waste water and further remove the COD in coking chemical waste water by interior, simultaneously for subsequent disposal provides carbon source;
Anoxic pond, is communicated with described anaerobic fixed film reactor, removes organism and nitric nitrogen and the nitrite nitrogen in coking chemical waste water by anti-nitration reaction;
Aerobic Pond, is communicated with described anoxic pond, for carrying out organic degraded and nitration reaction and providing the waste water that contains nitric nitrogen for anoxic pond;
Second pond, is communicated with described Aerobic Pond, and the mixed solution flowing into from Aerobic Pond is realized mud-water separation in second pond precipitation, simultaneously for anoxic pond provides active sludge; And
Contact-oxidation pool, is established the microorganism adhering on filler and is further removed COD, ammonia nitrogen, phosphorus and the organism in coking chemical waste water by interior;
Described advanced treatment device comprises
Coagulative precipitation tank, by adding coagulating agent to realize mud-water separation; And
Sand filter, further removes the suspended substance in waste water by the interior quartz sand filter media of establishing.
Also comprise sludge sump, for collecting the mud producing from decyanation pond, anaerobic fixed film reactor, anoxic pond, second pond and coagulative precipitation tank.
Also comprise the equalizing tank of being located at described decyanation pond and anaerobic fixed film reactor, on equalizing tank, be connected with the pH value adjusting device of low concentration wastewater water inlet and waste water.
On described hypergravity denitrification reactor, be also connected with ammonia recycling device.
Between described air flotation pool and hypergravity denitrification reactor and between hypergravity denitrification reactor and decyanation pond, be connected with respectively pH value adjusting device.
Described grille well is provided with stainless steel machinery grid in ingress, the outlet of grille well is connected with the submersible sewage pump for coked waste water being transported to oil trap.
High ammonia nitrogen coking wastewater processing system of the present utility model can effectively be removed the coal tar in coking chemical waste water by the oil trap in materialization treatment facility and air flotation pool, adopt hypergravity denitrification reactor can strengthen the mass transfer process of gas-liquid, greatly shorten the stripping reaction times of ammonia and the size of separating device, reduce floor space, simultaneously, adopt the biochemical processing devices such as anaerobic-anoxic-oxic-bio-contact oxidation to carry out biological decarburization, nitrogen processing, and adopt coagulative precipitation tank and sand filter to carry out advanced treatment, finally realize the qualified discharge of coking chemical waste water, it is reasonable that this system has technique, high and the wastewater utilization rate high of processing efficiency, can be quick, effectively remove organism in coking chemical waste water, reduce the COD value of waste water, make discharge of wastewater after treatment can reach the first discharge standard that " integrated wastewater discharge standard " (GB8978-1996) specifies, this high ammonia nitrogen coking wastewater processing system is by physics, chemistry and biochemical reaction combine, not only reduce the processing cost of coking chemical waste water, and can effectively remove volatile phenol in coking chemical waste water, mineral oil, prussiate, phenol and benzene compounds, the hazardous and noxious substances such as ammonia nitrogen, solve the defect of prior art.
Brief description of the drawings
Fig. 1 is the structural representation of the high ammonia nitrogen coking wastewater processing system of the utility model.
Embodiment
High ammonia nitrogen coking wastewater processing system of the present utility model adopts physico-chemical process and biochemical process to combine, and makes coking chemical waste water realize processing and the qualified discharge to coking chemical waste water by materialization treatment facility, biochemical processing device and advanced treatment device successively.
Specifically as shown in Figure 1, materialization treatment facility comprises the grille well 1, oil trap 2, air flotation pool 3, hypergravity denitrification reactor 4 and the decyanation pond 5 that set gradually,
Grille well 1 is provided with stainless steel machinery grid in ingress, can filter macrobead floating matter and solid sundries in coking chemical waste water, and the coking chemical waste water after filtration is promoted to oil trap 2 by submersible sewage pump.
Oil trap 2 adopts parallel flow intercepter, coking chemical waste water is in the inflow pond, one end of oil trap 2 and flow out from the other end, the process of coking chemical waste water from entrance to outlet sluggish flow, in coking chemical waste water, proportion is less than 1.0 and the larger oil droplet of particle diameter floats on liquid level, at the bottom of proportion is greater than 1.0 impurity that comprise heavy oil and sinks to pond.The liquid level position that is positioned at water outlet one side in oil trap 2 is equipped with the oil header that can rotate around himself axis, oil header has otch along its length in a side of tube wall, the otch of oil header makes it on liquid level directly over turning at ordinary times, in the time that liquid-surface floating oil reaches certain thickness, rotate oil header and make the position of otch in liquid level oil reservoir below, liquid-surface floating oil is entered and in oil header, is flow to oil trap again by the oil outlet pipe being connected with oil header and recycle outward by otch, is also provided with oil outlet pipe and realizes the regular discharge of bottom heavy oil in oil trap 2 bottoms.The suspended state coal tar being mingled with in coking chemical waste water can be separated and discharges by this oil trap 2, coking chemical waste water after treatment is delivered to air flotation pool 3.
Air flotation pool 3 is the air supporting of flat flow dividing potential drop, is divided into molten gas section and store oil section in air flotation pool 3, is provided with pressurization, molten gas equipment in molten gas section, and store oil section is provided with slag scraper and is provided with the collection foam groove of collecting foam in liquid level.The coking chemical waste water of sending here from oil trap 2 fuses excess air in coking chemical waste water by pressurization, molten gas equipment molten gas section, coking chemical waste water flow to after store oil section air soluble in water under atmospheric pressure state and overflows with micro-bubble, bubble sticks to the solia particle in coking chemical waste water and oil in water emulsion surface and together takes the water surface to and form foam layer in uphill process, scrapes collection foam groove discharge the outer regularly recovery in pond through slag scraper.Can effectively remove tar and part COD and the BOD of the emulsification state in coking chemical waste water by this air flotation pool 3.
In air flotation pool 3 coking chemical waste water after treatment, add sodium hydroxide, the pH value of coking chemical waste water is adjusted to 10.5-11.5, then send into together with air in hypergravity denitrification reactor 4, this hypergravity denitrification reactor 4 is horizontal type structure, wherein being provided with the gentle liquid of rotation filler imports and exports, coking chemical waste water and air enter in hypergravity denitrification reactor 4 in cross-flow mode, and the centrifugal action field (super gravity field) producing at rotation filler high speed rotating is lower to the ammonia in blower fan stripping coking chemical waste water.Due to the thinning of liquid film of coking chemical waste water liquid under the centrifugal action of the rotation filler generation of high speed rotating, make to bring about the desired sensation, the contact area of liquid increases, resistance to mass transfer reduces, thereby accelerate the stripping process of ammonia, be connected with ammonia recycling device 15 at the pneumatic outlet of hypergravity denitrification reactor 4, reclaim ammonia and can be made into thiamines recycling.
The coking chemical waste water after hypergravity denitrification reactor 4 is processed with certain basicity enters decyanation pond 5, in decyanation pond 5, in alkaline coking chemical waste water, add ferrous sulfate can react with the free cyanide in coking chemical waste water the unsettled yellow prussiate of generation, again by adding acid solution that pH value in coking chemical waste water is adjusted to 7-8, make yellow prussiate change into more stable Prussian blue type insoluble compound, add PAM flocculation agent to make compound precipitation simultaneously.In decyanation pond 5, be also provided with the whipping appts for accelerating chemical reaction velocity.After process in decyanation pond 5, prussiate clearance can reach 98%, can also remove part COD simultaneously.Sedimentable matter alluvial in decyanation pond 5 forms mud and is regularly discharged in sludge sump 14 by the blow-off pipe arranging at the bottom of pond.
Biochemical processing device comprises anaerobic fixed film reactor 7, anoxic pond 8, Aerobic Pond 9, second pond 10 and contact-oxidation pool 11.
Anaerobic fixed film reactor 7 is flow lifting type hydrolysis reactor, in the bottom of anaerobic fixed film reactor 7, water-distributing device is set, and the top of anaerobic fixed film reactor 7 is provided with combined elastic filler, is attached with facultative microbe and forms microbial film on surface on combined elastic filler.The coking chemical waste water of being sent here by decyanation pond 5 enters in pond through water-distributing device, in the process that waste water upwards flows at the bottom of by pond, the microbial film that combined elastic filling surface adheres to adsorbs the suspended particulate in waste water, net is caught, and be hydrolyzed into small organic molecule by the hydrolytic action of facultative microbe by being difficult to biodegradable larger molecular organics in waste water, improve the biodegradability of coking chemical waste water, simultaneously, the quinoline of hard degradation in coking chemical waste water, naphthalene, biphenyls etc. are after anaerobic acidification is processed, generate low molecular organic acids, the readily biodegradable materials such as phenylformic acid, as the required utilization of carbon source of anti-nitration reaction in follow-up anoxic pond 8, both can reduce the additional carbon of anti-nitration reaction, remove again the COD in waste water.Anaerobic reation pool 7 is controlled at the acidication stage anaerobic reaction, so hydraulic detention time is short, efficiency is high, has improved the biodegradability of sewage simultaneously.The blow-off pipe that the throw out producing in reaction arranges by anaerobic fixed film reactor 7 bottoms is regularly discharged in sludge sump 14.
Combined elastic filler is equipped with in anoxic pond 8 inside, the mixed solution that contains nitric nitrogen that the waste water that contains large amount of organic from anaerobic fixed film reactor 7 and Aerobic Pond 9 reflux carries out anti-nitration reaction, heterotroph denitrifying bacterium in waste water is taking the organism in sewage as carbon source, after nitric nitrogen and nitrite nitrogen being converted into nitrogen using the oxygen of nitrate in phegma as electron acceptor(EA), from water, remove, the organism in waste water is utilized by denitrifying bacteria and removes from waste water simultaneously.
Aerobic Pond 9 adopts plug-flow type active sludge aeration tank, is provided with water-distributing device and is provided with microporous aeration device and active sludge in bottom in pond, carries out organic final degraded and nitration reaction from the waste water of anoxic pond 8 in Aerobic Pond 9.Under aerobic condition, NH3 is finally oxidized to NO3-by autotrophic type nitrococcus and nitrifier, and the organism in waste water is new microbial bacteria micelle by activated sludge absorption, oxygenolysis Partial Conversion, and waste water is purified.A nitration waste water part that completes organic matter degradation and nitration reaction is sent to second pond 10, and a part is back to anoxic pond 8 by pump lifting and participates in anti-nitration reaction.PH decline increases basicity in pond if need to add soda ash in nitration reaction process.
Second pond 10 is sent waste water here to Aerobic Pond 8 and is carried out mud-water separation, and make active sludge obtain to a certain extent concentrated, the liquid of mud-water separation back upper place clarification enters follow-up contact-oxidation pool 11, and the sludge part of precipitation is back to anoxic pond 8, and part is sent in sludge sump 14.
Contact-oxidation pool 11 bottoms are provided with micro-hole aerator and combined stuffing are installed in pond, by the microorganism that adheres on combined stuffing to the organism in waste water adsorb further, oxygenolysis Partial Conversion be new microbial film, can effectively remove the pollutents such as COD, ammonia nitrogen and phosphorus in water, and sludge creation amount is few, can not produce the problem of sludge bulking.Waste water after treatment is sent to advanced treatment device and finally processes.
Advanced treatment device comprises coagulative precipitation tank 12 and sand filter 13.In coagulative precipitation tank 12, be provided with whipping appts, the waste water of sending here through contact-oxidation pool 11 stops precipitation in coagulative precipitation tank 12, realizes mud-water separation.In waste water, add coagulating agent PFS/PAM can make the impurity in waste water accelerate precipitation and colourity in water is had to good removal effect, after contamination precipitation, top clarified liq is discharged and is sent to sand filter 13.
Sand filter 13 adopts pressure filter, and quartz sand filter media is housed in pond, and hole can reach 10-15 μ m, can protect remaining most suspended substances in waste water to be filtered and held back, the water qualified discharge after filtration.
Through experiment, COD, NH3-N are respectively to the coking chemical waste water of 10000-15000mg/L and 2500-3000mg/L by after the processing of this high ammonia nitrogen coking wastewater processing system, COD<40mg/L, BOD<20mg/L in water outlet, phenol <0.5mg/L, ammonia nitrogen <5mg/L, cn-<0.5mg/L, reached the first discharge standard that " integrated wastewater discharge standard " of national promulgation (GB8978-1996) specifies.Can be used for boiler flue gas desulfurization make up water, green area irrigation water, road sprinkling depositing dust water, ground flushing water etc. through this high ammonia nitrogen coking wastewater processing system treated water, realize the processing recycling of coking chemical waste water, save water resources.
In addition, between decyanation pond 5 and anaerobic fixed film reactor 7, be also provided with equalizing tank 6, equalizing tank 6 is provided with the low concentration wastewater entrance for passing into other low concentration wastewater, low concentration wastewater mixes in equalizing tank 6 with through materialization treatment facility coking chemical waste water after treatment and regulates pH value for neutral, is promoted in anaerobic fixed film reactor 7 by lift pump.By low concentration wastewater entrance is set on equalizing tank, low concentration wastewater is directly sent into biochemical processing device, make this high ammonia nitrogen coking wastewater processing system can process coking chemical waste water and other waste water of producing, living and produce that coking produces simultaneously, reduce the input of coking enterprise to sewage treatment equipment, reduce the cost of wastewater treatment simultaneously.
Claims (6)
1. a high ammonia nitrogen coking wastewater processing system, is characterized in that, comprises materialization treatment facility, biochemical processing device and advanced treatment device; Wherein, materialization treatment facility comprises grille well, for filtering macrobead floating matter and the solid sundries of coking chemical waste water; Oil trap, is communicated with described grille well, for removing the suspended state fluid of coking chemical waste water; Air flotation pool, is communicated with described oil trap, removes solia particle and emulsification state fluid and part COD and BOD in coking chemical waste water by the pressurization, the air-dissolving apparatus that arrange on it; Hypergravity denitrification reactor, which is provided with gas-liquid and imports and exports, and the coking chemical waste water being come by air flotation pool enters in this hypergravity denitrification reactor after being adjusted to alkalescence together with air, by the ammonia nitrogen in the filler wind-force stripping coking chemical waste water of the high speed rotating established in it; And decyanation pond, being communicated with described hypergravity denitrification reactor, it is by adding medicament and regulating the pH value of coking chemical waste water can remove prussiate and the part COD in coking chemical waste water; Described biochemical processing device comprises anaerobic fixed film reactor, is communicated with described decyanation pond, and it is improved the biodegradability of coking chemical waste water and further removed the COD in coking chemical waste water by the interior microbial film of establishing filling surface, simultaneously for subsequent disposal provides carbon source; Anoxic pond, is communicated with described anaerobic fixed film reactor, removes organism and nitric nitrogen and the nitrite nitrogen in coking chemical waste water by anti-nitration reaction; Aerobic Pond, is communicated with described anoxic pond, for carrying out organic degraded and nitration reaction and providing the waste water that contains nitric nitrogen for anoxic pond; Second pond, is communicated with described Aerobic Pond, and the mixed solution flowing into from Aerobic Pond is realized mud-water separation in second pond precipitation, simultaneously for anoxic pond provides active sludge; And contact-oxidation pool, establish the microorganism adhering on filler and further remove COD, ammonia nitrogen, phosphorus and the organism in coking chemical waste water by interior; Described advanced treatment device comprises coagulative precipitation tank, by adding coagulating agent to realize mud-water separation; And sand filter, further remove the suspended substance in waste water by the interior quartz sand filter media of establishing.
2. high ammonia nitrogen coking wastewater processing system according to claim 1, is characterized in that, also comprises sludge sump, for collecting the mud producing from decyanation pond, anaerobic fixed film reactor, anoxic pond, second pond and coagulative precipitation tank.
3. high ammonia nitrogen coking wastewater processing system according to claim 1, is characterized in that, also comprises the equalizing tank of being located at described decyanation pond and anaerobic fixed film reactor, is connected with the pH value setting device of low concentration wastewater water inlet and waste water on equalizing tank.
4. high ammonia nitrogen coking wastewater processing system according to claim 1, is characterized in that, on described hypergravity denitrification reactor, is also connected with ammonia recycling device.
5. high ammonia nitrogen coking wastewater processing system according to claim 1, is characterized in that, between described air flotation pool and hypergravity denitrification reactor and between hypergravity denitrification reactor and decyanation pond, is being connected with respectively pH value setting device.
6. high ammonia nitrogen coking wastewater processing system according to claim 1, is characterized in that, described grille well is provided with stainless steel machinery grid in ingress, and the outlet of grille well is connected with the submersible sewage pump for coked waste water being transported to oil trap.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891721A (en) * | 2015-06-12 | 2015-09-09 | 东北石油大学 | Method for advanced treatment of coking wastewater |
| CN106277616A (en) * | 2016-08-30 | 2017-01-04 | 义乌市义南纸业有限公司 | A kind of waste water treatment process producing cop tube paper |
| CN106630364A (en) * | 2015-07-15 | 2017-05-10 | 麦王环境技术股份有限公司 | Treating process and equipment for coking chemical industrial sewage containing harmful toxic matters |
| CN107010781A (en) * | 2017-04-07 | 2017-08-04 | 上海美境环保工程有限公司 | The biochemical processing method and its process system of high ammonia nitrogen organic wastewater |
| CN109020085A (en) * | 2018-09-04 | 2018-12-18 | 浙江工业职业技术学院 | A kind of cloth decoloring wastewater treatment equipment |
| CN111908710A (en) * | 2020-07-03 | 2020-11-10 | 严惠琴 | Phenol-containing wastewater treatment system |
| CN113912157A (en) * | 2020-07-07 | 2022-01-11 | 环创源科技股份有限公司 | Ammonia nitrogen wastewater treatment method and treatment system |
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2014
- 2014-06-12 CN CN201420311343.5U patent/CN203960001U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891721A (en) * | 2015-06-12 | 2015-09-09 | 东北石油大学 | Method for advanced treatment of coking wastewater |
| CN106630364A (en) * | 2015-07-15 | 2017-05-10 | 麦王环境技术股份有限公司 | Treating process and equipment for coking chemical industrial sewage containing harmful toxic matters |
| CN106277616A (en) * | 2016-08-30 | 2017-01-04 | 义乌市义南纸业有限公司 | A kind of waste water treatment process producing cop tube paper |
| CN107010781A (en) * | 2017-04-07 | 2017-08-04 | 上海美境环保工程有限公司 | The biochemical processing method and its process system of high ammonia nitrogen organic wastewater |
| CN109020085A (en) * | 2018-09-04 | 2018-12-18 | 浙江工业职业技术学院 | A kind of cloth decoloring wastewater treatment equipment |
| CN111908710A (en) * | 2020-07-03 | 2020-11-10 | 严惠琴 | Phenol-containing wastewater treatment system |
| CN111908710B (en) * | 2020-07-03 | 2023-05-19 | 宁夏博安生物科技有限公司 | Phenol-containing wastewater treatment system |
| CN113912157A (en) * | 2020-07-07 | 2022-01-11 | 环创源科技股份有限公司 | Ammonia nitrogen wastewater treatment method and treatment system |
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