CN106186313A - For improveing integrated sewage disposal pond and the sewage water treatment method of AO - Google Patents

For improveing integrated sewage disposal pond and the sewage water treatment method of AO Download PDF

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Publication number
CN106186313A
CN106186313A CN201510229402.3A CN201510229402A CN106186313A CN 106186313 A CN106186313 A CN 106186313A CN 201510229402 A CN201510229402 A CN 201510229402A CN 106186313 A CN106186313 A CN 106186313A
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China
Prior art keywords
district
low
settling zone
oxygen aeration
sewage disposal
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CN201510229402.3A
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Chinese (zh)
Inventor
张华�
王昭峰
王保玉
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Easy Baihao Source (beijing) Environmental Protection Technology Co Ltd
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Easy Baihao Source (beijing) Environmental Protection Technology Co Ltd
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Priority to CN201510229402.3A priority Critical patent/CN106186313A/en
Publication of CN106186313A publication Critical patent/CN106186313A/en
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Abstract

The invention discloses a kind of integrated sewage disposal pond for improveing AO and sewage water treatment method, described integrated sewage disposal pond includes the most adjacent and that be wholely set and separated by partition wall settling zone, anaerobism dephosphorization district, air plug-flow district and low-oxygen aeration district, and described low-oxygen aeration district is also disposed adjacent with settling zone;Described settling zone and anaerobism dephosphorization district abutting end arrange inhalant region, and the other end is provided with relief area.The integrated sewage disposal pond for improveing AO of the present invention, anaerobic treatment, Aerobic Process for Treatment, sludge reflux, function that mud-water separation is different is achieved in same treatment tank, eliminate second pond and sludge reflux pump house, floor space is greatly reduced, also reduce construction cost simultaneously, thus reduce cost of sewage disposal.

Description

For improveing integrated sewage disposal pond and the sewage water treatment method of AO
Technical field
The present invention relates to sewage-treatment plant, particularly relate to a kind of integration improvement AO treatment tank and dirt Method for treating water.
Background technology
Along with the development of society, the problem of water scarcity is day by day serious, and water will become restriction social development One key factor.People the most increasingly pay attention to exploitation and the improvement of water technology.
Biologic process for treating sewage is one the most special in sewage treatment process, is also called activated sludge process. Activated sludge process can be divided into aerobic method and anaerobic process etc..In aerobe sewage disposal system, microorganism Utilize the dissolved oxygen in water, the organic pollution in oxidative degradation water, then carry out the separation of microorganism and water Operation, reaches to purify the purpose of sewage.
AO Process also makes anaerobic-aerobic Process, A (Anacrobic) be anaerobism sections, uses and denitrogenation dephosphorizing; O (Oxic) is aerobic section, for removing the Organic substance in water.
The feature of AO method denitrification process:
1, flow process is simple, does not need additional carbon and rear Aeration tank, with raw sewage as carbon source, builds and running cost With relatively low;
2, denitrification is front, and nitrification is rear, if interior circulation, using the organic substrates in raw sewage as carbon source, Effective, anti-nitration reaction is abundant;
3, Aeration tank is rear, makes denitrification residue be removed further, improves process water water quality;
4, A section stirring, only rises and makes sludge suspension, and avoid the increase of DO (dissolved oxygen).The leading portion of O section Using strong aeration, back segment reduces tolerance, makes the DO content of interior circulation fluid reduce, to ensure the anoxia shape of A section State.
The problem that tradition AO method exists:
1, sludge circulation ratio is little, and nitric efficiency is low;
2, will be by sewage disposal to conformance with standard, the time of staying of sewage is long, and treatment effeciency is low.
Summary of the invention
It is little that first purpose of the present invention is to provide a kind of floor space, it is possible to reduces the use of cost of sewage disposal Integrated sewage disposal pond in improvement AO.
It is a further object to provide and use the above-mentioned integrated sewage disposal pond for improveing AO Sewage water treatment method.
The present invention for improveing the integrated sewage disposal pond of AO, including the most adjacent and be wholely set and Settling zone, anaerobism dephosphorization district, air plug-flow district and the low-oxygen aeration district separated by partition wall, described hypoxia exposes Gas district is also disposed adjacent with settling zone;Described settling zone and anaerobism dephosphorization district abutting end arrange inhalant region, another End is provided with relief area, between anaerobism dephosphorization district and air plug-flow district, air plug-flow district and low-oxygen aeration district it Between, it is respectively arranged with material channel, described low-oxygen aeration district and settling zone between low-oxygen aeration district and settling zone Between dividing plate and pond at the bottom of separately positioned, so that low-oxygen aeration district connects in bottom with settling zone.
Optionally, being provided with online dissolved oxygen meter in described low-oxygen aeration district, described online dissolved oxygen meter connects control System processed, to carry out on-line monitoring and control to the dissolved oxygen in low-oxygen aeration district.
Optionally, described low-oxygen aeration district is provided with the aerator with self-cleaning function.
Optionally, described air plug-flow district is provided with air lift unit, in order to mixed liquor is promoted, Thus be delivered in low-oxygen aeration district.
Present invention also offers the sewage water treatment method in a kind of integrated sewage disposal pond for improveing AO, its It is characterised by, comprises the following steps:
S10, waste water is transported to inhalant region in mix with the backflow refluxed from settling zone;
In S20, step S10, mixed mixed liquor entrance anaerobism dephosphorization district carries out denitrification and anaerobic phosphorus release is anti- Should;
Mixed liquor after processing in S30, step S20 enters air plug-flow district, through sky in air plug-flow district Air stripping enters into low-oxygen aeration district after rising and <utilizes microorganism to COD under the conditions of 0.8mg/L at DO (dissolved oxygen) (COD, lower same), ammonia nitrogen, TN (total nitrogen, lower same) and TP (total phosphorus) carry out absorbing and dropping Solve;Low-oxygen aeration district dissolved oxygen controls DO < 0.8mg/L, it is possible to carry out nitrification and denitrification effect simultaneously, from And effectively remove the Organic substance of part difficult degradation, improve organic removal efficiency, simplify system denitrogenation Operational process, has saved energy consumption, improves nitric efficiency.
Mixed liquor after S40, the process of low-oxygen aeration district enters into by mud-water separation in settling zone, and partial sludge returns Flowing to bottom inhalant region mix with water inlet, excess sludge effluent sewerage processes outside pond, and supernatant is through top, settling zone Portion discharges.
Optionally, the ratio of the amount of backflow and influent waste water amount is more than 20, dilute to carry out the circulation of big ratio Release so that the organic concentration gradient of process pond water inlet end to water side significantly reduces, on the one hand, permissible Reduce the impact load of mud, improve the stability of system;On the other hand, create relatively to microorganism Stable growing environment.
Optionally, in described anaerobism dephosphorization district, low-oxygen aeration district, sludge concentration is 4~8g/L, at this mud Under concentration, the absorption of microorganism, degradation capability strengthen, and sludge loading is relatively low, and volumetric loading is relatively Height, can save construction investment, the system impact resistance simultaneously added.
The present invention for improveing the integrated sewage disposal pond of AO, due to by settling zone, anaerobism dephosphorization district, Air plug-flow district and low-oxygen aeration district are wholely set, and therefore, achieve at anaerobism in same treatment tank The function that reason, Aerobic Process for Treatment, sludge reflux, mud-water separation are different, eliminates second pond and sludge reflux pump Room so that floor space is greatly reduced, also reduces construction cost simultaneously, thus reduces sewage disposal This.
The sewage water treatment method using the above-mentioned integrated sewage disposal pond for improveing AO of the present invention, by In the integrated sewage disposal pond described in employing, therefore cost of sewage disposal is low, further, since low-oxygen aeration District DO < carry out Air Exposure under conditions of 0.8mg/L, it is possible to carry out nitrification and denitrification effect simultaneously, from And effectively remove the Organic substance of part difficult degradation, improve organic removal efficiency, simplify system denitrogenation Operational process, has saved energy consumption, improves nitric efficiency, it also avoid owing to NO3-N accumulation brings simultaneously Adverse effect, decrease the plant equipment between each reactor, the good denitrification effect both realized, again Reduce air blast energy consumption, it is achieved that the energy-saving and cost-reducing and double effects of good treatment effect.
Accompanying drawing explanation
Fig. 1 is that the present invention is for improveing the structural representation in the integrated sewage disposal pond of AO.
In figure, labelling is illustrated as: 1-settling zone;2-anaerobism dephosphorization district;3-air plug-flow district;4-hypoxia exposes Gas district;101-inhalant region;102-relief area;The online dissolved oxygen meter of 5-.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, technical scheme is further elaborated.
Embodiment 1
See Fig. 1, present embodiments provide a kind of integrated sewage disposal pond for improveing AO, including depending on Secondary adjacent and be wholely set and separated by partition wall settling zone 1, anaerobism dephosphorization district 2, air plug-flow district 3 And low-oxygen aeration district 4, described low-oxygen aeration district 4 is also disposed adjacent with settling zone 1;Described settling zone 1 with Anaerobism dephosphorization district 2 abutting end arranges inhalant region 101, and the other end is provided with relief area 102, anaerobism dephosphorization district 2 And between air plug-flow district 3, between air plug-flow district 3 and low-oxygen aeration district 4, low-oxygen aeration district 4 is with heavy Be respectively arranged with material channel between shallow lake district 1, the dividing plate between described low-oxygen aeration district 4 and settling zone 1 with At the bottom of pond separately positioned, so that low-oxygen aeration district 4 connects in bottom with settling zone 1.
The above-mentioned integrated sewage disposal pond for improveing AO, due to by settling zone 1, anaerobism dephosphorization district 2, Air plug-flow district 3 and low-oxygen aeration district 4 are wholely set, and therefore, achieve and detest in same treatment tank Oxygen process, Aerobic Process for Treatment, sludge reflux, function that mud-water separation is different, eliminate second pond and mud return Stream pump house so that floor space is greatly reduced, and also reduces construction cost simultaneously, thus reduces at sewage Reason cost.
In the present embodiment, it is preferred that described low-oxygen aeration district 4 is provided with online dissolved oxygen meter 5, described Line dissolved oxygen meter 5 connects has control system, so that the dissolved oxygen in low-oxygen aeration district 4 is carried out on-line monitoring and control.
In the present embodiment, it is preferred that described low-oxygen aeration district 4 is provided with the aeration with self-cleaning function Device (not shown).
In the present embodiment, it is preferred that described air plug-flow district 3 is provided with air lift unit (in figure not Illustrate), in order to mixed liquor is promoted, thus is delivered in low-oxygen aeration district 4.
In the present embodiment, described in there is the aerator of self-cleaning function, air lift unit is existing skill Common equipment in art, repeats no more its structure at this.
Embodiment 2
See Fig. 1, present embodiments provide a kind of for improveing at the sewage in integrated sewage disposal pond of AO Reason method, comprises the following steps:
S10, waste water is transported to inhalant region 101 in mix with the backflow refluxed from settling zone 1;
In S20, step S10, mixed mixed liquor entrance anaerobism dephosphorization district 2 carries out denitrification and anaerobic phosphorus release Reaction;
Mixed liquor after processing in S30, step S20 enters air plug-flow district 3, passes through in air plug-flow district Air promote after enter into low-oxygen aeration district 4 DO <utilize under the conditions of 0.8mg/L microorganism to COD, ammonia nitrogen, TN and TP carries out absorbing and degrading;Low-oxygen aeration district dissolved oxygen controls DO < 0.8mg/L, it is possible to carry out simultaneously Nitrification and denitrification effect, thus effectively remove the Organic substance of part difficult degradation, improve organic removal and imitate Rate, simplifies the operational process of system denitrogenation, has saved energy consumption, improve nitric efficiency.
Mixed liquor after S40, low-oxygen aeration district 4 process enters into by mud-water separation in settling zone 1, and part is dirty Mud is back to bottom inhalant region 101 mix with water inlet, and excess sludge effluent sewerage processes outside pond, supernatant warp Top, settling zone 1 is discharged.
In the present embodiment, it is preferred that the ratio of the amount of backflow and influent waste water amount more than 20, greatly than The circulation dilution of rate so that the organic concentration gradient of process pond water inlet end to water side significantly reduces, one Aspect, can reduce the impact load of mud, improves the stability of system;On the other hand, to microorganism Create metastable growing environment.
In the present embodiment, it is preferred that in described anaerobism dephosphorization district, low-oxygen aeration district, sludge concentration is 4~8g/L Under this sludge concentration, the absorption of microorganism, degradation capability strengthen, and sludge loading is relatively low, and volume is born Lotus is of a relatively high, can save construction investment, the system impact resistance simultaneously added.
Empirical tests, by table 1 it can be seen that the present embodiment with tradition AO technics comparing, draining COD index Can reduce by more than 20%, save power consumption about 30%~40%, nitric efficiency improves 20%~40%.
Table 1 improves AO technique and tradition AO process ration table
Last it is noted that above example is only in order to illustrate technical scheme, rather than it is limited System;Although the present invention being described in detail with reference to previous embodiment, those of ordinary skill in the art It is understood that the technical scheme described in foregoing embodiments still can be modified by it, or to it Middle part technical characteristic carries out equivalent;And these amendments or replacement, do not make appropriate technical solution Essence departs from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (7)

1. one kind for improveing the integrated sewage disposal pond of AO, it is characterised in that include the most adjacent and Settling zone, anaerobism dephosphorization district, air plug-flow district and the low-oxygen aeration district being wholely set and separated by partition wall, Described low-oxygen aeration district is also disposed adjacent with settling zone;Described settling zone and anaerobism dephosphorization district abutting end arrange into Pool, the other end is provided with relief area, and between anaerobism dephosphorization district and air plug-flow district, air plug-flow district is with low Between oxygen aeration zone, between low-oxygen aeration district and settling zone, it is respectively arranged with material channel, described low-oxygen aeration At the bottom of dividing plate between district and settling zone and pond separately positioned, so that low-oxygen aeration district connects in bottom with settling zone.
Integrated sewage disposal pond for improveing AO the most according to claim 1, it is characterised in that Being provided with online dissolved oxygen meter in described low-oxygen aeration district, described online dissolved oxygen meter connects control system.
Integrated sewage disposal pond for improveing AO the most according to claim 1, it is characterised in that Described low-oxygen aeration district is provided with the aerator with self-cleaning function.
Integrated sewage disposal pond for improveing AO the most according to claim 1, it is characterised in that Described air plug-flow district is provided with air lift unit.
5. the integrated sewage disposal pond for improveing AO used described in any one of claim 1-4 Sewage water treatment method, it is characterised in that comprise the following steps:
S10, waste water is transported to inhalant region in mix with the backflow refluxed from settling zone;
In S20, step S10, mixed mixed liquor entrance anaerobism dephosphorization district carries out denitrification and anaerobic phosphorus release is anti- Should;
Mixed liquor after processing in S30, step S20 enters air plug-flow district, through sky in air plug-flow district Air stripping enters into low-oxygen aeration district after rising and <utilizes microorganism to COD, ammonia nitrogen, TN under the conditions of 0.8mg/L at DO And TP carries out absorbing and degrading;
Mixed liquor after S40, the process of low-oxygen aeration district enters into by mud-water separation in settling zone, and partial sludge returns Flowing to bottom inhalant region mix with water inlet, excess sludge effluent sewerage processes outside pond, and supernatant is through top, settling zone Portion discharges.
Sewage water treatment method the most according to claim 5, it is characterised in that in described S10, backflow The ratio of the amount of liquid and influent waste water amount is more than 20.
Sewage water treatment method the most according to claim 5, it is characterised in that described anaerobism dephosphorization district, In low-oxygen aeration district, sludge concentration is 4~8g/L.
CN201510229402.3A 2015-05-07 2015-05-07 For improveing integrated sewage disposal pond and the sewage water treatment method of AO Pending CN106186313A (en)

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CN201510229402.3A CN106186313A (en) 2015-05-07 2015-05-07 For improveing integrated sewage disposal pond and the sewage water treatment method of AO

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Application Number Priority Date Filing Date Title
CN201510229402.3A CN106186313A (en) 2015-05-07 2015-05-07 For improveing integrated sewage disposal pond and the sewage water treatment method of AO

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110713258A (en) * 2019-10-31 2020-01-21 湖北加德科技股份有限公司 Full-mixing type kernel denitrification sewage treatment system and process
CN110790378A (en) * 2019-11-28 2020-02-14 恩格拜(武汉)生态科技有限公司 Method for treating high-solid-content organic wastewater by anaerobic-aerobic deep coupling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110713258A (en) * 2019-10-31 2020-01-21 湖北加德科技股份有限公司 Full-mixing type kernel denitrification sewage treatment system and process
CN110790378A (en) * 2019-11-28 2020-02-14 恩格拜(武汉)生态科技有限公司 Method for treating high-solid-content organic wastewater by anaerobic-aerobic deep coupling

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