CN104163543B - A kind of waste disposal plant and sewage water treatment method thereof - Google Patents
A kind of waste disposal plant and sewage water treatment method thereof Download PDFInfo
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- CN104163543B CN104163543B CN201410362877.5A CN201410362877A CN104163543B CN 104163543 B CN104163543 B CN 104163543B CN 201410362877 A CN201410362877 A CN 201410362877A CN 104163543 B CN104163543 B CN 104163543B
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Abstract
The present invention relates to a kind of waste disposal plant and sewage water treatment method thereof, the mixed industrial waste water that the antibiotics pharmacy sewage of pole difficult for biological degradation is master is processed, sewage is through grid, settling pit, adjustment preliminary sedimentation tank, modified version inversion A A/O pond, BAF, flocculation sedimentation tank and sludge thickener, by mechanical interception, chemical oxidation, repeatedly biological degradation and chemical flocculation effect, carry out denitrogenation dephosphorizing, achieve good treatment effect, water outlet CODcr, NH
3the index such as-N and TP all reaches first discharge standard, and the method treatment effect is reliable and stable, and running cost is lower.The biochemical reaction tanks such as the anoxic pond after improvement, anaerobic pond, Aerobic Pond all carry the device that independently muddy water is separated automatically, eliminate sludge reflux, decrease more greatly power consumption, reduce cost of sewage disposal, have economy and the dual superiority of technology.The coupling process that the present invention proposes is not subject to influent quality fluctuation and other factors impact, and have technique anti impulsion load strong, the features such as sludge settling property is good, acomia raw sludge swelling, have application prospect very widely.
Description
Technical field
The present invention relates to sewage treatment area, particularly relate to a kind of waste disposal plant and sewage water treatment method thereof.
Background technology
At present, a large amount of sewage is discharged in the enterprise production process such as food, papermaking, printing and dyeing, pharmacy, chemical industry, these sewage belong to organic waste water, and this organic sewage just need can be discharged into occurring in nature through process, otherwise are directly discharged into meeting serious pollution of water environment in nature water body.
In recent years, the problem of water environment pollution and body eutrophication is day by day serious.And nitrogen, phosphorus are the principal elements causing body eutrophication.Along with the raising of Public Environmental Awareness is with more and more stricter to the limitation standard of the discharge of nitrogen, phosphorus both at home and abroad, research and development economical, efficient organism, nitrogen, phosphorus associated treatment technology are the focuses in Water Pollution Control Engineering field always.
The mixed industrial waste water of manufacturing district is all difficult, and the mixed industrial waste water particularly based on antibiotic production wastewater is more difficult.Antibiotic production wastewater is that the element of the first species is complicated, colourity is high, bio-toxicity is large, containing the high concentration hard-degraded organic waste water of multiple inhibitory substance, be difficult point and the focus of domestic and international sewage disposal at present.Many Test And Research Works are done to such wastewater treatment both at home and abroad, as adopted Fenton reagent method, photocatalytic oxidation, Ozonation and activated sludge process etc., but the shortcomings such as these technology also exist that floor space is large, investment is large, processing cost is higher and wastewater treatment compliance rate is on the low side, are therefore subject to larger restriction in Practical Project is promoted.Manufacturing district, Fujian Province first phase of construction adopts the mixed industrial waste water of " acidication+MSBR+ flocculation sediment " this district of coupling technique process based on antibiotic production wastewater, Sewage Plant for many years operating practice shows: when meeting design influent quality standard when intaking, effluent quality CODcr, NH
3the requirement reaching country " integrated wastewater discharge standard " (GB8978-1996) secondary standard that all energy is stable of every pollutant emission such as-N and TP index; This art breading effect stability, anti impulsion load is comparatively strong, and process combination is comparatively reasonable, but can only reach the requirement of secondary discharge standard; The second stage of the project adopts " acidication+MSBR+ ozone oxidation+flocculation sediment+BAF " compounding technology process, though can reach the requirement of first discharge standard, floor space is large, processing cost is high, operation management is complicated.
Anaerobic/anoxic/aerobic method (i.e. AA/O method) is although to be technique simple for the feature of biological carbon and phosphorous removal, and can synchronous denitrification dephosphorizing, total residence time is short, mud not easily expands, without the need to dispensing, processing costs is low, but AA/O method exists after reaching certain effect, and dephosphorization amount and nitric efficiency are difficult to the problem improved further.Though improvement AA/O method combines the advantage of A/O method and improvement UCT technique, namely before anaerobic pond, anaerobic/anoxic pond is set up, the polyP bacteria being conducive to anaerobic pond is released phosphorus and is inhibit hyphomycetic breeding simultaneously, improve mud-water separation performance, improve operation stability and treatment effect, but it is large to there is sludge reflux amount, increase cost of sewage disposal.
At present, be both at home and abroad handling object to the research of AA/O method and deformation technique thereof mainly with sanitary sewage, and it is less to adopt AA/O method directly to process the report of trade effluent, particularly based on the rarely seen report of the trade effluent of antibiotics pharmacy, inversion A A/O method directly processes and is not reported based on the trade effluent of antibiotics pharmacy.Propose to adopt " modified version inversion A A/O method+BAF+flocculation sedimentation tank " coupling process to process industrial sewage based on this present inventor.
Summary of the invention
The waste disposal plant that the while of the object of the present invention is to provide a kind of organic efficient to remove, denitrogenation dephosphorizing efficiency is high, treatment effect is reliable and stable, running cost is low and sewage water treatment method thereof.
For achieving the above object, the present invention adopts following technical scheme:
A kind of waste disposal plant, it comprises grid, settling pit, regulate preliminary sedimentation tank, modified version inversion A A/O pond (i.e. anoxic pond, anaerobic pond, Aerobic Pond), BAF, flocculation sedimentation tank and sludge thickener, described anoxic pond water outlet is connected with anaerobic pond water-in, described anaerobic pond water outlet is connected with Aerobic Pond water-in, described anoxic pond, dividing plate and bucket is equipped with in anaerobic pond and Aerobic Pond, described dividing plate is located in pond, pond is divided into Liang Ge district, one of them district is biochemical reaction zone, another district is the automatic disengaging zone of muddy water, the outer side wall upper end of described biochemical reaction zone is provided with water-in, the outer side wall upper end of the automatic disengaging zone of described muddy water is provided with water outlet, described dividing plate is being provided with muddy water import and export near the middle and lower part place at the bottom of pond, described bucket is located at bottom the pond of the automatic disengaging zone of muddy water, the sidewall of bucket and the angle at the bottom of pond are 20-70 °, the bottom of bucket is provided with mud discharging device.
The angle of described dividing plate and pond upper surface is 20-90 °.
Described mud discharging device is the sludge pump of tape punching pipe.
A kind of sewage water treatment method, which employs waste disposal plant as above, and described method adopts " modified version inversion A A/O method+BAF+flocculation sedimentation tank " coupling process to process industrial sewage; The method specifically comprises the following steps:
1) industrial sewage retains in sewage through grid and flows into settling pit after bulk dirt, and precipitation removes the grains of sand;
2) sewage that settling pit top exports flows into and regulates preliminary sedimentation tank, and regulating water quality and the water yield are to homogenizing, and sewage fully mixes with the mud in pond, by the absorption of mud, except part pollutent in decontaminated water simultaneously;
3) sewage regulating preliminary sedimentation tank top to export reacts through modified version inversion A A/O pond successively, and in anoxic pond, the dirty dissolved oxygen in water of stirring and adjusting is in 0.2mg/L ~ 0.5mg/L, tames out a class with NO simultaneously
3 --N is as the denitrification phosphorus-collecting flora of final electron acceptor(EA), and Denitrifying Phosphate Accumulating Organisms is with NO
3 -as electron acceptor(EA), utilize the internal carbon source in sewage, realize denitrification denitrogenation by " a carbon double-purpose " mode simultaneously, remove nitre state oxygen and anoxic suction phosphorus; In anaerobic pond, strictly control dissolved oxygen amount≤0.2mg/L, under the effect of anaerobion, the main acidication that occurs reacts, and insoluble larger molecular organics is hydrolyzed into dissolved organic matter to improve the biodegradability of sewage quality, fully discharges phosphorus simultaneously; Dissolved oxygen amount in Aerobic Pond in stirring and adjusting sewage is in 2mg/L ~ 3mg/L, tames out aerobic flora, efficient degradation organism and high-performance bio dephosphorization under the biological metabolism effect of aerobic bacteria;
4) the sewage supernatant liquor part exported in Aerobic Pond is back to anoxic pond, and a part flows into BAF, in BAF, by mechanical interception, chemical oxidation and biological degradation synergy, continues the pollutent in degree of depth biological degradation sewage;
5) sewage that BAF exports finally flows into flocculation sedimentation tank, adds iron system or AlSnSi alloy, by chemical flocculation effect, remove amounts of residual contamination further, finally realize qualified discharge in flocculation sedimentation tank.
Mud in described adjustment preliminary sedimentation tank is the mud that anoxic pond, anaerobic pond, Aerobic Pond and flocculation sedimentation tank are discharged, and is delivered to adjustment preliminary sedimentation tank, fully mixes with sewage, part pollutent in activated sludge absorption sewage through sludge pump; After regulating preliminary sedimentation tank mud-water separation, remaining mud pumps into sludge thickener again, carries out sludge condensation, dewaters, press dry.
The present invention adopts above technical scheme, and its beneficial effect is as follows:
(1) " modified version inversion A A/O method+BAF+flocculation sedimentation tank " coupling process proposed by the invention is at influent COD cr, NH
3under the Pollutant levels such as-N and TP meet GB8978-1996 " integrated wastewater discharge standard " three grades of emission standard prerequisites, the mixed industrial waste water that the antibiotics pharmacy sewage of pole difficult for biological degradation is master is processed, achieve good treatment effect, water outlet CODcr, NH
3the index such as-N and TP all reaches " first discharge standard ", and this art breading effect stability is reliable, and running cost is lower.
(2) the present invention is compared with " acidication+MSBR+ ozone oxidation+flocculation sediment+BAF " combination process, floor space of the present invention is less, construction investment less, better processing effect, processing cost are lower, operation management is simpler, its stable water outlet reaches " primary standard ", has more economy and the dual superiority of technology.
(3) biochemical reaction tank such as anoxic pond, anaerobic pond, Aerobic Pond after improving all carries the device that independently muddy water is separated automatically, eliminate sludge reflux, decrease power consumption significantly, reduce cost of sewage disposal, mud-water separation time controling is at 0.2-2.5h, and each pond can need each self-acting control sludge concentration according to operation, and the active sludge in each pond is grown in environment best separately, do not interfere with each other, separate, substantially increase biological treatment efficiency.
(4) the more traditional AA/O method of inversion A A/O method and improvement AA/O method after improving, water outlet P content obviously reduces, and because anoxic section is located at technique head end, denitrification preferentially can obtain carbon source, and thus denitrification rate also can improve 15% one 39%.
(5) the coupling process process of the present invention's proposition is based on the mixed industrial waste water of antibiotics pharmacy, be not subject to influent quality fluctuation and other factors impact, there is technique anti impulsion load strong, CODcr, phosphorus and the nitrogen removal that easy acquisition is stable, and biochemical sludge separately can not affect microorganism active, the features such as sludge settling property is good, acomia raw sludge swelling.The efficient process of sewage treatment process of the present invention to be the antibiotics pharmacy sewage of pole difficult for biological degradation be main mixed industrial waste water provides novel method, there is application prospect very widely, also for the efficient process of other unmanageable mixed industrial waste water provides new way.
Accompanying drawing explanation
Now the invention will be further described by reference to the accompanying drawings:
Fig. 1 is waste disposal plant of the present invention and sewage water treatment method schema thereof;
Fig. 2 is one of waste disposal plant structure of the present invention schematic diagram;
Fig. 3 is two schematic diagram of waste disposal plant structure of the present invention.
Embodiment
As Fig. 1, shown in 2 or 3, a kind of waste disposal plant, it comprises grid 1, settling pit 2, regulate preliminary sedimentation tank 3, modified version inversion A A/O pond (i.e. anoxic pond 4, anaerobic pond 5, Aerobic Pond 6), BAF 7, flocculation sedimentation tank 8 and sludge thickener 9, described anoxic pond 4 water outlet is connected with anaerobism 5 pond water-in, described anaerobic pond 5 water outlet is connected with Aerobic Pond 6 water-in, described anoxic pond 4, dividing plate 10 and bucket 11 is equipped with in anaerobic pond 5 and Aerobic Pond 6, described dividing plate 10 is located in pond, pond is divided into Liang Ge district, one of them district is biochemical reaction zone 12, another district is the automatic disengaging zone 13 of muddy water, the outer side wall upper end of described biochemical reaction zone 12 is provided with water-in, the outer side wall upper end of the automatic disengaging zone 13 of described muddy water is provided with water outlet, described dividing plate 10 is being provided with muddy water import and export 14 near the middle and lower part place at the bottom of pond, described bucket 11 is located at bottom the pond of the automatic disengaging zone 13 of muddy water, the sidewall of bucket 11 and the angle at the bottom of pond are 20-70 °, the bottom of bucket 11 is provided with mud discharging device 15.
Described dividing plate 10 is 20-90 ° with the angle of pond upper surface.
Described mud discharging device 15 is the sludge pump of tape punching pipe.
A kind of sewage water treatment method, which employs waste disposal plant as above, and described method adopts " modified version inversion A A/O method+BAF+flocculation sedimentation tank " coupling process to process industrial sewage; The method specifically comprises the following steps:
1) industrial sewage retains in sewage through grid 1 and flows into settling pit 2 after bulk dirt, and precipitation removes the grains of sand;
2) sewage that settling pit 2 top exports flows into and regulates preliminary sedimentation tank 3, and regulating water quality and the water yield are to homogenizing, and sewage fully mixes with the mud in pond, by the absorption of mud, except part pollutent in decontaminated water simultaneously;
3) sewage regulating preliminary sedimentation tank 3 top to export reacts through modified version inversion A A/O pond successively, and in anoxic pond 4, the dirty dissolved oxygen in water of stirring and adjusting is in 0.2mg/L ~ 0.5mg/L, tames out a class with NO simultaneously
3 --N is as the denitrification phosphorus-collecting flora of final electron acceptor(EA), and Denitrifying Phosphate Accumulating Organisms is with NO
3 -as electron acceptor(EA), utilize the internal carbon source in sewage, realize denitrification denitrogenation by " a carbon double-purpose " mode simultaneously, remove nitre state oxygen and anoxic suction phosphorus; In anaerobic pond, strictly control dissolved oxygen amount≤0.2mg/L, under the effect of anaerobion, the main acidication that occurs reacts, and insoluble larger molecular organics is hydrolyzed into dissolved organic matter to improve the biodegradability of sewage quality, fully discharges phosphorus simultaneously; Dissolved oxygen amount in Aerobic Pond in stirring and adjusting sewage is in 2mg/L ~ 3mg/L, tames out aerobic flora, efficient degradation organism and high-performance bio dephosphorization under the biological metabolism effect of aerobic bacteria;
4) the sewage supernatant liquor part exported in Aerobic Pond 6 is back to anoxic pond 4, a part flows into BAF 7, in BAF 7, by mechanical interception, chemical oxidation and biological degradation synergy, continue the pollutent in degree of depth biological degradation sewage;
5) sewage that BAF 7 exports finally flows into flocculation sedimentation tank 8, adds iron system or AlSnSi alloy, by chemical flocculation effect, remove amounts of residual contamination further, finally realize qualified discharge in flocculation sedimentation tank 8.
Mud in described adjustment preliminary sedimentation tank 3 is the mud of discharging in anoxic pond 4, anaerobic pond 5, Aerobic Pond 6, BAF 7 and flocculation sedimentation tank 8, be delivered to through sludge pump and regulate preliminary sedimentation tank 3, fully mix with sewage, produce part pollutent in activated sludge absorption sewage, after regulating preliminary sedimentation tank 3 mud-water separation, remaining mud pumps into sludge thickener 9 again, carries out sludge condensation, dewaters, press dry.
Claims (5)
1. a waste disposal plant, comprise grid, settling pit, regulate preliminary sedimentation tank, modified version inversion A A/O pond, BAF, flocculation sedimentation tank and sludge thickener, it is characterized in that: in described modified version inversion A A/O pond, anoxic pond water outlet is connected with anaerobic pond water-in, described anaerobic pond water outlet is connected with Aerobic Pond water-in, described anoxic pond, dividing plate and bucket is equipped with in anaerobic pond and Aerobic Pond, described dividing plate is located in pond, pond is divided into Liang Ge district, one of them district is biochemical reaction zone, another district is the automatic disengaging zone of muddy water, the outer side wall upper end of described biochemical reaction zone is provided with water-in, the outer side wall upper end of the automatic disengaging zone of described muddy water is provided with water outlet, described dividing plate is being provided with muddy water import and export near the middle and lower part place at the bottom of pond, described bucket is located at bottom the pond of the automatic disengaging zone of muddy water, the sidewall of bucket and the angle at the bottom of pond are 20-70 °, the bottom of bucket is provided with mud discharging device.
2. a kind of waste disposal plant according to claim 1, is characterized in that: the angle of described dividing plate and pond upper surface is 20-90 °.
3. a kind of waste disposal plant according to claim 1, is characterized in that: described mud discharging device is the sludge pump of tape punching pipe.
4. have employed a sewage water treatment method for waste disposal plant as described in claims 1 to 3 any one, it is characterized in that: described method adopts " modified version inversion A A/O method+BAF+flocculation sedimentation tank " coupling process to process industrial sewage; The method specifically comprises the following steps:
1) industrial sewage retains in sewage through grid and flows into settling pit after bulk dirt, and precipitation removes the grains of sand;
2) sewage that settling pit top exports flows into and regulates preliminary sedimentation tank, and regulating water quality and the water yield are to homogenizing, and sewage fully mixes with the mud in pond, by the absorption of mud, except part pollutent in decontaminated water simultaneously;
3) sewage regulating preliminary sedimentation tank top to export reacts through modified version inversion A A/O pond successively, and in anoxic pond, the dirty dissolved oxygen in water of stirring and adjusting is in 0.2mg/L ~ 0.5mg/L, tames out a class with NO simultaneously
3 --N is as the denitrification phosphorus-collecting flora of final electron acceptor(EA), and Denitrifying Phosphate Accumulating Organisms is with NO
3 -as electron acceptor(EA), utilize the internal carbon source in sewage, realize denitrification denitrogenation by " a carbon double-purpose " mode simultaneously, remove nitre state oxygen and anoxic suction phosphorus; In anaerobic pond, control dirty dissolved oxygen in water≤0.2mg/L, under the effect of anaerobion, acidication reaction occurs, insoluble larger molecular organics is hydrolyzed into dissolved organic matter to improve the biodegradability of sewage quality, discharges phosphorus simultaneously; Dissolved oxygen amount in Aerobic Pond in stirring and adjusting sewage is in 2mg/L ~ 3mg/L, tames out aerobic flora, degradation of organic substances and biological phosphate-eliminating under the biological metabolism effect of aerobic bacteria;
4) the sewage supernatant liquor part exported in Aerobic Pond is back to anoxic pond, and a part flows into BAF, in BAF, by mechanical interception, chemical oxidation and biological degradation synergy, continues the pollutent in degree of depth biological degradation sewage;
5) sewage that BAF exports finally flows into flocculation sedimentation tank, adds iron system or AlSnSi alloy, by chemical flocculation effect, remove amounts of residual contamination further, finally realize qualified discharge in flocculation sedimentation tank.
5. a kind of sewage water treatment method according to claim 4, it is characterized in that: the mud in described adjustment preliminary sedimentation tank is the mud that anoxic pond, anaerobic pond, Aerobic Pond bucket and flocculation sedimentation tank are discharged, adjustment preliminary sedimentation tank is delivered to through sludge pump, fully mix with sewage, part pollutent in activated sludge absorption sewage; After regulating preliminary sedimentation tank mud-water separation, remaining mud pumps into sludge thickener again, carries out sludge condensation, dewaters, press dry.
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| CN105110560A (en) * | 2015-08-27 | 2015-12-02 | 常州大学 | Zero-discharge dyeing wastewater treatment system |
| CN105692885A (en) * | 2016-04-22 | 2016-06-22 | 陈建发 | High pollution resistance membrane bioreactor and sewage treatment method |
| CN106745738B (en) * | 2016-12-20 | 2020-10-13 | 上海城投污水处理有限公司 | Sewage treatment tank and treatment process |
| CN107445401A (en) * | 2017-08-31 | 2017-12-08 | 温州楚天建设有限公司 | A kind of sewage water treatment method |
| CN108046429A (en) * | 2017-12-14 | 2018-05-18 | 南京霖恒彦水处理技术有限公司 | A kind of biological treatment system and processing method of high poison wastewater from chemical industry with high salt |
| CN109179656A (en) * | 2018-09-29 | 2019-01-11 | 苏州德嘉环保工程有限公司 | A kind of high concentration organic nitrogen waste water dis posal technique |
| CN110606620A (en) * | 2019-08-15 | 2019-12-24 | 江苏如是地球空间信息科技有限公司 | Sewage treatment process and method for controlling biochemical links in sewage treatment process based on neural network |
| CN110550831A (en) * | 2019-10-17 | 2019-12-10 | 北京思檀生物科技有限公司 | novel sewage treatment system and process |
| CN111533374A (en) * | 2020-05-08 | 2020-08-14 | 袁思静 | Synchronous denitrification and dephosphorization double-sludge sewage treatment system |
| CN112473348B (en) * | 2020-11-06 | 2022-09-16 | 上海市政工程设计研究总院（集团）有限公司 | Flue gas treatment system and flue gas treatment method |
| CN112551802A (en) * | 2020-11-11 | 2021-03-26 | 安徽科技学院 | Energy-saving and environment-friendly sewage treatment device and method |
| CN112499913A (en) * | 2020-12-30 | 2021-03-16 | 魏一明 | Enhanced nitrogen and phosphorus removal domestic sewage treatment method |
| CN112679051A (en) * | 2021-01-12 | 2021-04-20 | 王一珍 | Efficient sewage treatment method |
| CN114409204A (en) * | 2022-02-17 | 2022-04-29 | 广州绿莱环保科技有限公司 | Automatic wastewater treatment system and treatment method thereof |
| CN114873869A (en) * | 2022-06-15 | 2022-08-09 | 广东新泰隆环保集团有限公司 | Sewage treatment and purification system and method |
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