CN204509061U - A kind of coagulation Anoxic/Aerobic total system of composite waste - Google Patents

A kind of coagulation Anoxic/Aerobic total system of composite waste Download PDF

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Publication number
CN204509061U
CN204509061U CN201520205153.XU CN201520205153U CN204509061U CN 204509061 U CN204509061 U CN 204509061U CN 201520205153 U CN201520205153 U CN 201520205153U CN 204509061 U CN204509061 U CN 204509061U
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pond
aerobic
anoxic
coagulative precipitation
front reaction
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张波
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Shandong Environmental Protection Technology Service Center (shandong Motor Vehicle Exhaust Pollution Control Center)
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Shandong Environmental Protection Technology Service Center (shandong Motor Vehicle Exhaust Pollution Control Center)
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Abstract

A coagulation Anoxic/Aerobic total system for composite waste, comprises equalizing tank, coagulative precipitation tank, front reaction pond, anoxic pond, Aerobic Pond, sludge activation pond and second pond; Equalizing tank is connected by lift pump with coagulative precipitation tank, and coagulative precipitation tank, front reaction pond, anoxic pond, Aerobic Pond are connected successively with second pond, and sludge activation pond is connected with Aerobic Pond; Aerator is provided with in equalizing tank; Coagulative precipitation tank comprises coagulation district and settling region, and the inlet end in coagulation district is provided with medicament delivery mouth; Be provided with agitator in front reaction district and anoxic pond, in Aerobic Pond, be provided with aerator; Be provided with mixed-liquor return pipe between anoxic pond and Aerobic Pond, mixed-liquor return pipe is connected with reflux pump; Sludge reflux canal is provided with between second pond and front reaction pond.This system cloud gray model convenient management, running cost is low, stable effluent quality, can efficiently cut down COD in composite waste, ammonia nitrogen and total nitrogen.

Description

A kind of coagulation Anoxic/Aerobic total system of composite waste
Technical field
The utility model relates to a kind for the treatment of system of composite waste, belongs to technical field of sewage.
Background technology
S in the composite waste that sanitary sewage, industrial sewage etc. mix 2-, Cr 3+, COD, BOD 5, ammonia nitrogen and total nitrogen concentration high, and containing a large amount of muriates and vitriol etc., for comprehensive wastewater, the method that usual employing materializing strategy and biochemical treatment combine, namely first materializing strategy is carried out to waste water, carry out biochemical treatment again after making the environment of waste water be applicable to microbe survival, if desired, bio-chemical effluent also needs to carry out advanced treatment further, makes the requirement of waste water conformance with standard.
At present, conventional materilization freatment method mainly contains: coagulant sedimentation, absorption method, advanced oxidation processes, By Bubble-floating Method etc. (technique such as coagulating sedimentation wherein, air supporting is mainly used in biochemical pre-treatment, and absorption method and advanced oxidation processes are used for advanced treatment).Biochemical processing method mainly comprises anoxic/aerobic method, anaerobic/anoxic/aerobic method, oxidation ditch, intermittent activated sludge process and contact oxidation method etc.These techniques improve the removal effect of ammonia nitrogen and COD in waste water effectively.But when processing the composite waste that COD, total nitrogen and ammonia nitrogen concentration are high, saltiness is high, often there is the disadvantage that total residence time is long, floor space is large, investment/working cost is high, clearance is low, operational management is complicated, treatment effect is unstable.
Summary of the invention
The deficiency that the utility model exists for existing composite waste treatment technology, there is provided a kind of operational management convenient, running cost is low, stable effluent quality, efficiently can cut down the coagulation Anoxic/Aerobic total system of the composite waste of COD in composite waste, ammonia nitrogen and total nitrogen.
The coagulation Anoxic/Aerobic total system of composite waste of the present utility model, by the following technical solutions:
This system, comprises equalizing tank, coagulative precipitation tank, front reaction pond, anoxic pond, Aerobic Pond, sludge activation pond and second pond; Equalizing tank is connected by lift pump with coagulative precipitation tank, and coagulative precipitation tank, front reaction pond, anoxic pond, Aerobic Pond are connected successively with second pond, and sludge activation pond is connected with Aerobic Pond; Aerator is provided with in equalizing tank; Coagulative precipitation tank comprises coagulation district and settling region, and the inlet end in coagulation district is provided with medicament delivery mouth; Be provided with agitator in front reaction district and anoxic pond, in Aerobic Pond, be provided with aerator; Be provided with mixed-liquor return pipe between anoxic pond and Aerobic Pond, mixed-liquor return pipe is connected with reflux pump; Sludge reflux canal is provided with between second pond and front reaction pond; Adding of agent mouth and aerator is provided with in sludge activation pond.
Composite waste is introduced after equalizing tank fully mixes, being promoted to coagulative precipitation tank and carrying out coagulating kinetics, controlling the indices (pH value, sulphur content, chromium content and solid suspension substrate concentration etc.) of supernatant liquor by controlling coagulant charging quantity.Supernatant liquor after precipitation is introduced front reaction pond, anoxic pond and Aerobic Pond successively, and fully to carry out nitrification and denitrification reaction, the mixed solution in Aerobic Pond is back to anoxic pond by certain reflux ratio.Mud scum overflow in Aerobic Pond, in sludge activation pond, is promoted in front reaction pond after adding promoting agent raising mud scum activity again.Enter second pond by the waste water after Aerobic Pond process, the mud after precipitation is back to anoxic pond by certain reflux ratio.Supernatant liquor rear direct discharge up to standard in second pond after precipitation, the mud after precipitation is back in front reaction district by certain reflux ratio.Mud in coagulative precipitation tank and the excess sludge in second pond are delivered to sludge thickener, are dehydrated into mud cake.
The utility model is by aeration mixing long in equalizing tank, fully equilibrium can enter water quality and the water yield of subsequent processing units, removed COD and the grease of particle and colloidality in waste water by coagulating sedimentation, effectively reduce the processing load of biochemical system, improve the settling property of mud; By controlling the parameters such as the dissolved oxygen of anoxic pond and Aerobic Pond, mud and return current ratio of the mixed liquid, optimize nitration denitrification environment, realize traditional nitration denitrification, short-cut nitrification and denitrification and the synchronous nitration and denitrification in denitrification process simultaneously, under the prerequisite of not additional carbon and basicity, still nitric efficiency can be significantly improved; Adopt higher return sludge ratio, can effectively prevent or slow down the Mud up-floating phenomenon because waste water denitrification in settling tank causes, prevent sludge loss, guarantee supernatant liquor effluent quality.
The utility model operational management is convenient, and running cost is low, stable effluent quality, can efficiently cut down COD in composite waste, ammonia nitrogen and total nitrogen.
Accompanying drawing explanation
Fig. 1 is the structural schematic block diagram of the coagulation Anoxic/Aerobic total system of the utility model composite waste.
In figure: 1, equalizing tank, 2, coagulative precipitation tank, 3, front reaction pond, 4, anoxic pond, 5, Aerobic Pond, 6, second pond, 7, sludge activation pond, 8, sludge thickener.
Embodiment
As shown in Figure 1, the coagulation Anoxic/Aerobic total system of the utility model composite waste comprises equalizing tank 1, coagulative precipitation tank 2, front reaction pond 3, anoxic pond 4, Aerobic Pond 5, sludge activation pond 7 and second pond 6.Equalizing tank 1 is connected by lift pump with coagulative precipitation tank 2, and coagulative precipitation tank 2, front reaction pond 3, anoxic pond 4, Aerobic Pond 5 are connected successively with second pond 6, and sludge activation pond 7 is connected with Aerobic Pond 5.Aerator is provided with in equalizing tank 1.Coagulative precipitation tank 2 comprises coagulation district and settling region, and the inlet end in coagulation district is provided with medicament delivery mouth, to control the dosage of coagulating agent, is controlled the pollutents such as the sulfide of water outlet and SS by dosing coagulant.Front reaction pond 3, anoxic pond 4 and Aerobic Pond 5 are cascaded, and be provided with agitator, be provided with aerator in Aerobic Pond 5 in front reaction district 3 and anoxic pond 4.Be provided with mixed-liquor return pipe between anoxic pond 4 and Aerobic Pond 5, mixed-liquor return pipe is connected with reflux pump, the mixed solution in Aerobic Pond 5 is back to anoxic pond 4 by certain reflux ratio.Sludge reflux canal is provided with, to be back in front reaction district 3 by certain reflux ratio by the mud of precipitation between second pond 6 and front reaction pond 3.Sludge activation pond 7 is arranged on Aerobic Pond 5 side, and the mud scum overflow in Aerobic Pond 5 is in sludge activation pond 7.Adding of agent mouth and aerator is provided with in sludge activation pond 7.
The concrete technology flow process of said system is as described below:
Waste water sulfur-containing waste water, chromate waste water or other waste water mixed introduces equalizing tank 1, and the aeration rate in regulating and controlling pond 1, fully mixes.Coagulative precipitation tank 2 will be promoted at the mixed waste water of equalizing tank 1 by lift pump and carry out coagulating kinetics, be controlled the indices (pH value, sulphur content, chromium content and solid suspension substrate concentration etc.) of supernatant liquor by the dosage controlling coagulation district inlet end coagulating agent.Supernatant liquor after precipitation is introduced front reaction pond 3, anoxic pond 4 is introduced again after staying for some time in front reaction pond 3, Aerobic Pond 5 is introduced again after staying for some time in anoxic pond 4, fully to carry out nitrification and denitrification reaction, control the mixed solution sludge concentration in anoxic pond 4 and Aerobic Pond 5 and dissolved oxygen concentration.Mixed solution in Aerobic Pond 5 is back to anoxic pond 4 by certain reflux ratio.
Mud scum overflow in Aerobic Pond 5 is in sludge activation pond 7, in sludge activation pond 7 by adding defatting enzyme, after diatomite or the agent of microbiobacterial agent isoreactivity improve mud scum activity, again be promoted to again in front reaction pond 3, thus improve nitrification and denitrification processing efficiency, improve the settling property of active sludge, prevent sludge bulking and loss.Enter second pond 6 by the waste water after Aerobic Pond 5 processes, the sludge reflux after precipitation is to anoxic pond 4.
Supernatant liquor rear direct discharge up to standard in second pond 6 after precipitation, the mud after precipitation is back in front reaction district 3 by sludge reflux well by certain reflux ratio.Mud in coagulative precipitation tank and the excess sludge in second pond are delivered to sludge thickener 8, then are dehydrated into mud cake by sludge dewatering equipment.

Claims (1)

1. a coagulation Anoxic/Aerobic total system for composite waste, comprises equalizing tank, coagulative precipitation tank, front reaction pond, anoxic pond, Aerobic Pond, sludge activation pond and second pond; It is characterized in that: equalizing tank is connected by lift pump with coagulative precipitation tank, coagulative precipitation tank, front reaction pond, anoxic pond, Aerobic Pond are connected successively with second pond, and sludge activation pond is connected with Aerobic Pond; Aerator is provided with in equalizing tank; Coagulative precipitation tank comprises coagulation district and settling region, and the inlet end in coagulation district is provided with medicament delivery mouth; Be provided with agitator in front reaction district and anoxic pond, in Aerobic Pond, be provided with aerator; Be provided with mixed-liquor return pipe between anoxic pond and Aerobic Pond, mixed-liquor return pipe is connected with reflux pump; Sludge reflux canal is provided with between second pond and front reaction pond; Adding of agent mouth and aerator is provided with in sludge activation pond.
CN201520205153.XU 2015-04-07 2015-04-07 A kind of coagulation Anoxic/Aerobic total system of composite waste Expired - Fee Related CN204509061U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107129119A (en) * 2017-07-14 2017-09-05 周敉 A kind of biochemical treatment apparatus and technique for realizing high CO_2 density
CN110526396A (en) * 2019-07-24 2019-12-03 华电电力科学研究院有限公司 A kind of desulfurization wastewater and sanitary sewage Coordination Treatment technique and its integrated apparatus
CN114804362A (en) * 2022-05-27 2022-07-29 上海泓济环保科技股份有限公司 Device for recovering and improving sludge activity in biochemical treatment of high-salinity wastewater and using method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107129119A (en) * 2017-07-14 2017-09-05 周敉 A kind of biochemical treatment apparatus and technique for realizing high CO_2 density
CN110526396A (en) * 2019-07-24 2019-12-03 华电电力科学研究院有限公司 A kind of desulfurization wastewater and sanitary sewage Coordination Treatment technique and its integrated apparatus
CN114804362A (en) * 2022-05-27 2022-07-29 上海泓济环保科技股份有限公司 Device for recovering and improving sludge activity in biochemical treatment of high-salinity wastewater and using method

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Granted publication date: 20150729

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