CN1579959A - Carrier circulating biological treating method for sewage treatment - Google Patents

Carrier circulating biological treating method for sewage treatment Download PDF

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Publication number
CN1579959A
CN1579959A CNA2004100131593A CN200410013159A CN1579959A CN 1579959 A CN1579959 A CN 1579959A CN A2004100131593 A CNA2004100131593 A CN A2004100131593A CN 200410013159 A CN200410013159 A CN 200410013159A CN 1579959 A CN1579959 A CN 1579959A
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China
Prior art keywords
aerobic
reactor
anaerobic
bioremediation
sewage
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CNA2004100131593A
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CN1260145C (en
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曾庆福
鲁敏
张跃武
王军
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Wuhan Textile University Asset Management Co., Ltd.
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Wuhan University of Science and Engineering WUSE
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention relates to an approach of carrier cycle biology process using for sewage treatment. It follows nether steps: through balancing tank, sewage entering into biomembrane reactor of three stages (aerobic/anaerobic/aerobic), or four stages (anaerobic/aerobic/anaerobic/aerobic) to conduct biology process, adding flocculant to remove phosphor and precipitating out water through desilter. The invention can be widely used in kinds of cities for sewage treatment with simple technics and equipments, little floor area, low investment and operation cost and high effectiveness.

Description

The carrier circulating biological treatment process that is used for sewage disposal
Technical field
The present invention is a kind of carrier circulating biological treatment process that is used for sewage disposal.
Background technology
Along with the pay attention to day by day to water environment protection, people more and more pay attention to the research of denitrification dephosphorization technique.Technology maturation, more extensive, the reliable technology of utilization have A/O, A at present 2Technology such as/O, CAST is activated sludge process.On the whole, the processing efficiency of activated sludge process is higher, but it has the working cost height, and consumption is many, for the bad adaptability of influent load variation, and might produce the shortcoming of sludge bulking.
Compare with activated sludge process, biomembrance process has formed a more complex ecosystem.Vertically, microorganism has constituted a complex ecosystem of being made up of a plurality of trophic levels such as bacterium, fungi, algae, protozoon, metazoans; Laterally, direction along liquid to filler, constituted a microflora of adhering to aerobic type, adhering to facultative type and the multiple different mobilities of adhering to anaerobic type, type of respiration, nutrient type, thereby biomembrance process has certain denitrogenation, particularly thin microbial film processing efficiency is higher, and biomembrance process has more energy-conservation, stronger capacity of resisting impact load, it is few and be easy to advantages such as precipitation and operational management be convenient to have bigger unit volume biomass, long solid retention time and a surplus sludge volume.The new trend of biomembrance process has appearred paying attention in recent years in the world, a collection of new bio membrane process technology has appearred, it is better to flood the biomembrance process denitrification effect as the A/O two-section type, but phosphor-removing effect is undesirable, can obtain treatment effect preferably with the physical chemistry method combination; Flood sequencing batch biofilm reactor process and have the function of synchronous denitrification dephosphorizing, phosphor-removing effect better and denitrification effect is relatively poor relatively, and present research also fails to be applied to during actual sewage handles.Along with emerging and the further investigation of treatment process of novel membrane-biological membrane reactor, biomembrance process very likely becomes the substitute technology of activated sludge process.
Summary of the invention
Technical problem to be solved by this invention is: a kind of carrier circulating biological treatment process that is used for sewage disposal is provided, and this method technology is simple, with low cost, and effluent quality is good, can be widely used in the processing of various scales city and industrial sewage.
The present invention is a kind of carrier circulating biological treatment process that is used for sewage disposal, its technology is: sewage enters three sections promptly aerobic/aerobic/anaerobic section biofilm reactors through equalizing tank and carries out a biological disposal upon, or to enter four sections be that aerobic/anaerobic/aerobic/anaerobic section biofilm reactor is carried out a biological disposal upon, add flocculation agent then and remove phosphorus, again through the settling tank precipitated outlet water.
The present invention is owing to utilize the thin microbial film with better denitrification effect, and is provided with aerobic zone and anaerobic zone, and adopted the mud reflux type to combine, thereby has following major advantage:
One. Processes and apparatus is simple, can build up integrated reactor, and hydraulic detention time is shorter, but the sewage of the various water quality and quantities of suitable treatment, effluent quality is good.
They are two years old. because waterpower rotating biological membrane reactor capacity of resisting impact load is strong, contained concentration of activated sludge very high (microbial film and the settling tank returned sluge that comprise the biologic packing material surface), so the sewage treating efficiency height, it is all better to remove organism and denitrification effect.
They are three years old. the effectively dephosphorization of used flocculation agent, become the carrier (carrier in the similar fluidized-bed process, specific surface area is very big) of biofilm development after the backflow again, and the excess sludge water ratio that is produced is low, saves processing costs, and can be made into fertilizer.
They are four years old. and the volumetric loading height, floor space is little.
They are five years old. and flexible operation, management maintenance is convenient.
They are six years old. and one-time investment is lower, and running cost significantly is lower than existing sewage treatment process, can be widely used in the processing of various scales city and industrial sewage.
Description of drawings
Fig. 1 is that the present invention is used to handle good biodegradability process sewage schematic flow sheet.
Fig. 2 is that the present invention is used to handle the relatively poor process sewage schematic flow sheet of biodegradability.
Embodiment
The present invention is at a kind of novel membrane-biological membrane reactor---the bio membrane process of developing on the waterpower rotating biological membrane reactor basis with denitrification dephosphorization function, its technology is: sewage enters three sections promptly aerobic/aerobic/anaerobic section biofilm reactors (see figure 1) of carrying out a biological disposal upon through equalizing tank, or to enter four sections be aerobic/anaerobic/aerobic/anaerobic section biofilm reactor (see figure 2) of carrying out a biological disposal upon, add flocculation agents such as montmorillonite, gac then and remove phosphorus, again through the settling tank precipitated outlet water.
In order to improve wastewater treatment efficiency, the mud in the settling tank can be back to equalizing tank and biofilm reactor, mud can be removed organism and denitrogenation in the biofilm reactor.The effectively dephosphorization and improve effluent quality of flocculation agent after the backflow, in addition, montmorillonite and gac specific surface area are quite big, can be used as the carrier of active sludge after the backflow, improve concentration of activated sludge.Flocculation agent, its component are (weight %): montomorillonite 39~68, ferrous sulfate 20~40, polymerize aluminum chloride 3~10, montmorillonite activator 2~7, gac 1~4; Generally select montomorillonite 57, ferrous sulfate 30, polymerize aluminum chloride 5, montmorillonite activator 5 and gac 3 for use, effect is just relatively good.
Above-mentioned aerobic section biofilm reactor can adopt and can carry out nitrated and waterpower rotating biological membrane reactor (number of patent application 200420017804.4) oxidizing reaction.It is the waterpower rotating biological membrane reactor that one or more levels serial connection forms, and the structure of every stage reactor is: comprise frame, reactive tank and hydraulic rotary device; Reactive tank and frame are connected; Hydraulic rotary device is positioned on the reactive tank, it comprises waterpower rotating trough and the rotation skeleton that is attached thereto, and this skeleton is provided with the rotating shaft that links to each other with the reactive tank cell wall, also is provided with several equally distributed carrier compartments, each carrier compartment is equipped with the carrier cabin, and biologic packing material is equipped with in the carrier cabin.Because hydraulic shear is bigger in the waterpower rotating biological membrane reactor, the microbial film of many-sided ball filler is thinner, the material transfer efficiency is higher in the microbial film, especially be fit to the growth of nitrifier and denitrifying bacteria, therefore in the secondary aerobic section, all can remove the nitrogen of a part by the synchronous nitration and denitrification reaction.
Above-mentioned anaerobic segment biological membrane reactor can adopt the submerged biofilm reactor that can carry out anti-nitration reaction of present use.Its structure mainly is: have one can spoil disposal reactive tank, its bottom is 10~60 the gradient, and its degree of depth is suitable with one-level waterpower rotating biological membrane reactor, and inside can be filled various types of fillers as required, filler is submerged in the underwater, no oxygenating and aerating unit.
Reactor is more among the present invention, mainly is the power consumption that promotes for fear of recirculated water, and avoids recirculated water the dilution of water quality to be reduced the shortcoming of speed of response, when handling the waste water of high density, then can adopt the operation scheme of backflow.
Narrate sewage treatment process of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2: difference suitable growth nitrifier and denitrifying bacteria in aerobic section and the anoxic section, the mud that fixed microbial film and process reflux successively passes through aerobic section and anoxic section, can remove the nitrogen of quite a few.Denitrogenation mainly utilizes waterpower rotating biological membrane reactor inter-sync nitration denitrification reaction, successively carries out nitration reaction and anoxic section at aerobic section with returned sluge and carries out anti-nitration reaction and remove, and phosphorus is mainly removed by adding flocculation agent.In addition, this technology operation scheme is very flexible, and the consumption of flocculation agent can be grasped flexibly according to the sewage quality water yield, when the higher or water yield is big when concentration of wastewater, part mud can be back to equalizing tank, to give full play to the effect of biofloculation.
1. aerobic/aerobic/anaerobic technology (see figure 1):
Sewage at first enters equalizing tank, the influence of buffering water quality and quantity.Enter one-level waterpower rotating biological membrane reactor then, the residence time is about 1~3 hour, after handling by this one-level, and COD CrWith NH 4The concentration of-N declines to a great extent, and TN slightly descends.Sewage residence time in the submerged biofilm reactor is about 1.5~3.5 hours, handles back COD CrSlightly descend, TN-N declines to a great extent.Sewage residence time in secondary waterpower rotating biological membrane reactor is about 1~3 hour, mainly removes the organism in the water.Enter settling tank after adding flocculation agent, the residence time is 1.5~2.5 hours.
This technology is used to handle the sewage of good biodegradability.
2. aerobic/anaerobic/aerobic/anaerobic technology (see figure 2):
Sewage at first enters one-level submerged biofilm reactor, and to improve the biodegradability of sewage, the residence time is about 1.5~5 hours, and the sewage disposal of each stage reactor thereafter is identical with above-mentioned aerobic/each stage reactor of aerobic/anaerobic technology.
This technology is more aerobic/and anoxic/aerobic process has been established a submerged biofilm reactor more, is anaerobic condition in it, and main purpose is to improve the biodegradability of sewage, is used to handle the relatively poor sewage of biodegradability.
Above-mentioned two kinds of technologies can be handled the sewage of various concentration.When Pollutant levels are too high, can adopt the operation scheme of last step reactor effluent recycling to first step reactor.

Claims (7)

1. bioremediation that is used for sewage disposal, it is characterized in that being used for the carrier circulating biological treatment process of sewage disposal, its technology is: sewage enters three sections promptly aerobic/aerobic/anaerobic section biofilm reactors through equalizing tank and carries out a biological disposal upon, or to enter four sections be that aerobic/anaerobic/aerobic/anaerobic section biofilm reactor is carried out a biological disposal upon, add flocculation agent then and remove phosphorus, again through the settling tank precipitated outlet water.
2. bioremediation according to claim 1 is characterized in that the mud of settling tank is back to equalizing tank and biofilm reactor, and the flocculation agent after the backflow becomes the carrier of active sludge, and mud is removed organism, denitrogenation and poly-phosphorus in the biofilm reactor.
3. bioremediation according to claim 1 is characterized in that described aerobic section biofilm reactor, and employing can be carried out nitrated and waterpower rotating biological membrane reactor oxidizing reaction.
4. bioremediation according to claim 1 is characterized in that described anaerobic segment biological membrane reactor, and employing can be carried out the submerged biofilm reactor of anti-nitration reaction.
5. bioremediation according to claim 1 when it is characterized in that described sewage is high-concentration waste water, adopts the operation scheme of last step reactor effluent recycling to first step reactor.
6. bioremediation according to claim 1 and 2 is characterized in that described flocculation agent, and its component is (weight %): montomorillonite 39~68, ferrous sulfate 20~40, polymerize aluminum chloride 3~10, montmorillonite activator 2~7, gac 1~4.
7. bioremediation according to claim 6 is characterized in that described flocculation agent, and its component is (weight %): montomorillonite 57, ferrous sulfate 30, polymerize aluminum chloride 5, montmorillonite activator 5, gac 3.
CNB2004100131593A 2004-05-14 2004-05-14 Carrier circulating biological treating method for sewage treatment Expired - Fee Related CN1260145C (en)

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CN1260145C CN1260145C (en) 2006-06-21

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1860074A2 (en) * 2006-05-26 2007-11-28 Ecodays Co., Ltd. Apparatus and method for treating wastewater
CN103936155A (en) * 2014-05-12 2014-07-23 西南大学 Method for enhancing denitrification capacity of sewage by utilizing smectite
CN105417765A (en) * 2015-11-04 2016-03-23 俞汉青 Device for enriching and recycling organic carbon in municipal sewage and method for applying device
CN106673299A (en) * 2016-12-06 2017-05-17 广州富生源环保工程有限公司 Sewage step-by-step dephosphorization and purification process
CN110272169A (en) * 2019-07-24 2019-09-24 辽东学院 A kind of microorganism water purification method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1860074A2 (en) * 2006-05-26 2007-11-28 Ecodays Co., Ltd. Apparatus and method for treating wastewater
EP1860074A3 (en) * 2006-05-26 2008-02-27 Ecodays Co., Ltd. Apparatus and method for treating wastewater
CN103936155A (en) * 2014-05-12 2014-07-23 西南大学 Method for enhancing denitrification capacity of sewage by utilizing smectite
CN103936155B (en) * 2014-05-12 2015-08-05 西南大学 A kind of method utilizing montmorillonite to improve sewage water denitrification ability
CN105417765A (en) * 2015-11-04 2016-03-23 俞汉青 Device for enriching and recycling organic carbon in municipal sewage and method for applying device
CN105417765B (en) * 2015-11-04 2018-02-27 俞汉青 A kind of municipal sewage organic carbon enriching and recovering utilizes device and its application method
CN106673299A (en) * 2016-12-06 2017-05-17 广州富生源环保工程有限公司 Sewage step-by-step dephosphorization and purification process
CN110272169A (en) * 2019-07-24 2019-09-24 辽东学院 A kind of microorganism water purification method

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