CN110240350A - It is a kind of to enhance sewerage integrated equipment and impact resistance method using nitrification liquid reflux - Google Patents

It is a kind of to enhance sewerage integrated equipment and impact resistance method using nitrification liquid reflux Download PDF

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Publication number
CN110240350A
CN110240350A CN201910210166.9A CN201910210166A CN110240350A CN 110240350 A CN110240350 A CN 110240350A CN 201910210166 A CN201910210166 A CN 201910210166A CN 110240350 A CN110240350 A CN 110240350A
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CN
China
Prior art keywords
tank
sewage
conditioning tank
conditioning
clear water
Prior art date
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Pending
Application number
CN201910210166.9A
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Chinese (zh)
Inventor
孙广东
赵龙
申彪
王浩
蒋云钟
殷峻暹
吕冠梦
杨珂
皮志勇
刘家宏
杨明祥
张萍
杨金
李丽娟
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Shenzhen Yuanyu Eco-Technological Creation Center Co Ltd
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Shenzhen Yuanyu Eco-Technological Creation Center Co Ltd
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Priority to CN201910210166.9A priority Critical patent/CN110240350A/en
Publication of CN110240350A publication Critical patent/CN110240350A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions

Abstract

Enhance sewerage integrated equipment and impact resistance method using nitrification liquid reflux the invention discloses a kind of, it is related to technical field of sewage.Sewage enters grille well and carries out primary treatment, conditioning tank will be entered after the solid of larger size in sewage and hair retention, sewage carries out anaerobic digestion and separation of solid and liquid here, and most of lesser suspended matter of density floats to form dross, and most of biggish solid of density is deposited in the bottom of conditioning tank;Elevator pump in conditioning tank is by conditioning tank sewage lifting to anoxic pond, carry out biochemical treatment, after sewage passes sequentially through the processing of anoxic and aerobic tank, sludge settling is carried out in secondary settling tank, the supernatant gravity flow of secondary settling tank enters clear water reserviors, clear water is formed, clear water is by gravity flow or promotes the water body near being discharged into.The present invention saves equipment investment expense, reduces the biochemical treatment impact to sewage disposal device, practical reliable, has a extensive future.

Description

It is a kind of to enhance sewerage integrated equipment and impact resistance method using nitrification liquid reflux
Technical field
The present invention relates to technical field of sewage, and in particular to a kind of to utilize nitrification liquid reflux enhancing sewage one The equipment and impact resistance method of change.
Background technique
Country sewage feature has: the total amount that 1. country sewage generates is very big, but individually peasant household's sewage effluent amount is smaller, individually Treating stations treatment scale is smaller.
2. sewage discharge diurnal variation is big.The discharge of country sewage has uneven Drainage feature, and early, late discharge amount is big, His period discharge amount is smaller, night few sewage discharge, and diurnal variation is larger.
3. discharge dispersion.Rural residence population is not concentrated, and distribution density is small, the Sewage outlet that do not fix, and lacks row Water collection system;Collecting sewage by extensive sewage collecting pipe network, there are Difficulties, and the investment of sewage collecting pipe network is very Greatly, collection rate is also very low.
4. influent quality is relatively stable, biodegradability is generally preferable.
Wherein, sewage variation coefficient height is the significant difficulty of rural domestic sewage treatment, and sewage ash machine focuses in the morning, afternoon and evening three A period generates, at this point, the common approach is that increase the residence time of conditioning tank, and increase occupation area of equipment, while Increase investment cost.
Currently, the technology of sewage treatment has:
(1) activated sludge technology: activated sludge technology is a kind of bioanalysis, and air is passed through into waste water, keeps aerobic microbiological numerous It grows culture and forms the activated sludge for having very strong adsorption capacity, bioanalysis is increasingly becoming the main stream approach of sewage disposal technology.Activity The basic procedure of sludge technology: it is made of aeration tank, secondary sedimentation tank, aerating system and sludge recirculation system.By sinking for the first time The waste water of shallow lake pond outflow enters aeration tank with the activated sludge to flow back from secondary precipitation bottom of pond portion simultaneously, becomes mixed liquor.It is exposing Under the action of gas pond, mixed liquor is sufficiently aerated, and comes into full contact with activated sludge and waste water, the soluble organic contamination in waste water Object is adsorbed by activated sludge, and is decomposed by micropopulation, and waste water is purified.
Activated sludge technology specifically further includes many kinds, wherein having general expression activated sludge process, oxidation ditch process, AB two-part Activated sludge process, sequencing batch activated sludge (SBR) method, being thoroughly mixed property sludge etc..
(2) A/O Process: also it is anaerobic-aerobic Process.It, can also be same in addition to can remove the organic contamination beyond the region of objective existence in waste water When go to denitrogenate, hydrolysis acidification section is arranged before aerobic section, can significantly mention for high concentrated organic wastewater and used water difficult to degradate for phosphorus High wastewater biodegradability.
(3) A2/O method: biological denitrification phosphorous removal technique is conventional activated sludge process, biological nitration and denitrification process and life The synthesis of object dephosphorization process.The process efficiency can generally reach: BOD5 and SS is 90%-95%, and total nitrogen is 70% or more, phosphorus It is 90% or so, applies in general to the large- and-medium size cities sewage plant for requiring denitrogenation dephosphorizing, but the capital cost and running cost of A2/O technique It is above conventional activated sludge process, operational management requires height, so sewage is discharged into when treated for current China's national situation Closure water body or slow flow water bodies cause eutrophication, to just use the technique when influencing water supply source.
(4) biological aerated filter: abbreviation BAF is the third for integrating both biofilm and activated sludge process advantage For biofilter, BAF has the function of removing organic matter, harmful substance, denitrogenation, dephosphorization;Occupied area is small, capital expenditure is few, Energy consumption and operating cost are low.
(5) contact oxidation method: biological contact oxidation process is a kind of biological effluent treatment derived from from biofilm. Sewage is in contact with biomembrane in the process, under the action of microorganism on biomembrane, can make to purify the sewage, therefore again Claim " submerged bacteria filter ".This method provides the oxygen amount that Institute of Micro-biology needs using aeration method identical with aeration tank, and rises Stirring and mixed effect, while adding filler in aeration tank.
(6) integration MBR technique: a kind of tradition combining activated sludge process and Integral immersion film separation system changes It is outstanding effectively to remove solid instead of traditional infall process for good figure technique, the separation of solid and liquid process carried out using membrane module Floating particles and organic granular, prepare sterile water.System water outlet can be directly used for producing or living reuse.Waste water passes through present treatment system The indices of system processing discharge water outlet can achieve the specified value of " urban sewage reutilization urban reclaimed water water quality ".
The common sewage disposal technology of the above is required to be aerated, and in order to solve the requirement of removal denitrogenation, is all provided with Anoxic (denitrification) and aerobic (nitrification) two kinds of environment are counted, to reduce the polluted by nitrogen and eutrophication problem that are discharged into river, It is the common recognition of environmentalist.Aerobic Process for Treatment refers in the presence of microorganism, in conditions such as suitable carbon-nitrogen ratio, moisture content and oxygen Under, by organic matter degradation, it is converted to the biochemical process of humus sample substance.The ammonia that nitrification amino acid is taken off, aerobic Under the conditions of, the effect through nitrite bacteria and nitrate bacteria is converted into the process of nitric acid.The oxidation that ammonia is converted into nitric acid must have O2It participates in.Anoxic pond is with respect to the department of biochemistry for for anaerobic and aerobic, generally referring to dissolved oxygen control between 0.2-0.5mg/l System.Denitrification, also referred to as denitrification refer to bacterium by nitrate (NO3) in nitrogen (N) pass through series of intermediate products (NO2−、 NO、N2O) it is reduced to nitrogen (N2) Biochemical processes, that is, denitrification process.Therefore in order to reach in sewage treatment project To the effect of azo, it can all be designed as AN/O technique, that is, anoxic+aerobic, such as Fig. 1, still, this nitrification liquid reflux type It needs using nitrification liquid reflux pump 10, equipment investment is costly, simultaneously as when the generation of sanitary sewage usually has very big Between variation coefficient especially in field of rural sewage water treatment lead to a large amount of water inlets of integrated equipment for sewage treatment interval, to dirt The biochemical treatment of water treatment facilities causes very big impact.Based on this, if a kind of utilize nitrification liquid reflux enhancing sewage one The equipment and impact resistance method of change are particularly necessary.
Summary of the invention
In view of the shortcomings of the prior art, a kind of dirty using nitrification liquid reflux enhancing object of the present invention is to be to provide Water integrated equipment and impact resistance method, it is reasonable in design, equipment investment expense is saved, is reduced to sewage disposal device Biochemical treatment impact, practical, high reliablity, use easy to spread.
To achieve the goals above, the present invention is to realize by the following technical solutions: a kind of to be flowed back using nitrification liquid Enhance sewerage integrated equipment, including conditioning tank, anoxic pond, aerobic tank, Aeration fan, secondary settling tank, storage basin and clear water reserviors, Conditioning tank is connected to anoxic pond by elevator pump, and anoxic pond, aerobic tank, secondary settling tank, clear water reserviors are set gradually, anoxic pond, aerobic Aeration fan is installed above pond, secondary settling tank is connected to storage basin, and the aerobic tank is connected to conditioning tank by return pipe.
Preferably, the conditioning tank front end is provided with thickness twice grid, to sewage primary treatment, by sewage compared with Large-sized solid and hair are retained.
Preferably, the liquid level of the aerobic tank is higher than conditioning tank, the refluxing opening being arranged on aerobic tank and return pipe phase Connection, allows the water of aerobic tank to be back to conditioning tank, the end of return pipe is goed deep into conditioning tank, and the end of return pipe is equipped with Ball-cock assembly, when the liquid level of conditioning tank is lower than this liquid level, backflow functionality is opened;If the liquid level in conditioning tank is not less than ball-cock assembly Liquid level is designed, backflow functionality stops.
A kind of impact resistance method enhancing sewerage integrated equipment using nitrification liquid reflux, the steps include: sewage into Enter grille well and carry out primary treatment, is cut the solid of larger size in sewage and hair etc. by the artificial grid of thickness twice After staying, into conditioning tank, sewage carries out anaerobic digestion and separation of solid and liquid, most of lesser suspended matter floating shape of density here At dross, most of biggish solid of density, such as sandstone are deposited in the bottom of conditioning tank, convenient for drawing clearly;Mentioning in conditioning tank Pump is risen by conditioning tank sewage lifting to anoxic pond, starts to carry out biochemical treatment, sewage passes sequentially through the place of anoxic pond and aerobic tank After reason, sludge settling is carried out in secondary settling tank, the supernatant gravity flow of secondary settling tank enters clear water reserviors, forms clear water, clear water passes through gravity flow Or it is promoted and is discharged into neighbouring water body.
Beneficial effects of the present invention: the present apparatus makes nitrification liquid be back to conditioning tank by the way of gravity stream, greatlys save Equipment investment expense, while a degree of dilution is carried out to sewage, reduce biochemical treatment of the sewage to anoxic pond and aerobic tank Impact.
Detailed description of the invention
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments;
Fig. 1 is the structural schematic diagram of background technique;
Fig. 2 is structural schematic diagram of the invention;
Fig. 3 is process flow chart of the invention.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to Specific embodiment, the present invention is further explained.
Referring to Fig. 2-3, present embodiment uses following technical scheme: a kind of to utilize nitrification liquid reflux enhancing sewage one The equipment of body, including conditioning tank 1, anoxic pond 2, aerobic tank 3, Aeration fan 4, secondary settling tank 5, storage basin 6 and clear water reserviors 7 are adjusted Section 1 front end of pond is provided with the thickness twice grid to sewage primary treatment, and conditioning tank 1 is connected to anoxic pond 2 by elevator pump 8, Anoxic pond 2, aerobic tank 3, secondary settling tank 5, clear water reserviors 7 are set gradually, and Aeration fan 4 is equipped with above anoxic pond 2, aerobic tank 3, good The liquid level in oxygen pond 3 is higher than conditioning tank 1, and the refluxing opening being arranged on aerobic tank 3 is connected with return pipe, and the end of return pipe is deeply adjusted It saves in pond 1, the end of return pipe is equipped with ball-cock assembly, and secondary settling tank 5 is connected to storage basin 6, and the aerobic tank 3 passes through return pipe It is connected to conditioning tank 1.
A kind of impact resistance method enhancing sewerage integrated equipment using nitrification liquid reflux, the steps include: sewage into Enter grille well and carry out primary treatment, is cut the solid of larger size in sewage and hair etc. by the artificial grid of thickness twice After staying, into conditioning tank 1, sewage carries out anaerobic digestion and separation of solid and liquid here, and most of lesser suspended matter of density floats It forms dross, most of biggish solid of density, such as sandstone and is deposited in the bottom of conditioning tank 1, convenient for drawing clearly;In conditioning tank 1 Elevator pump 8 by conditioning tank sewage lifting to anoxic pond 2, start to carry out biochemical treatment, sewage passes sequentially through anoxic pond 2 and aerobic After the processing in pond 3, sludge settling is carried out in secondary settling tank 5, the supernatant gravity flow of secondary settling tank 5 enters clear water reserviors 7, forms clear water, clearly Water is by gravity flow or promotes the water body near being discharged into.
Present embodiment is higher than 1 liquid level of conditioning tank by the way of nitrification liquid reflux, using 3 liquid level of aerobic tank Feature designs a refluxing opening in 3 water outlet of aerobic tank, so that the water of aerobic tank 3 is back to conditioning tank 1, nitrification liquid is returned It is flow to conditioning tank, increases a pre- denitrogenation unit, has positive effect for reducing CODCr and total nitrogen in sewage disposal process, Sewage because containing higher dissolved oxygen in nitrification liquid, and is substantially at anaerobism in conditioning tank 1 after the processing of aerobic tank 3 State contributes to form anaerobic condition after mixing, to achieve the effect that pre- denitrogenation, and then reduces total in sewage Nitrogen;Meanwhile the reflux pipe end of nitrification liquid is equipped with ball-cock assembly, when the liquid level of conditioning tank 1 is lower than this liquid level, backflow functionality is opened It opens, if the liquid level in conditioning tank 1 designs liquid level not less than ball-cock assembly, backflow functionality stops.
Present embodiment makes nitrification liquid be back to conditioning tank by the way of gravity stream, is not necessarily to nitrification liquid reflux pump, Equipment investment expense is saved, sewage water is increased by reflux type, the sewage water in conditioning tank is made to keep abundant substantially State, stabilizes sewage water, and elevator pump can reduce the failure rate of elevator pump, nitrification liquid is back to avoid frequent start-stop Conditioning tank can carry out a degree of dilution to sewage, reduce a large amount of water inlets of interval to anoxic pond and aerobic tank using reflux Biochemical treatment caused by impact, have a vast market application prospect.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (5)

1. a kind of enhance sewerage integrated equipment using nitrification liquid reflux, which is characterized in that including conditioning tank (1), anoxic pond (2), aerobic tank (3), Aeration fan (4), secondary settling tank (5), storage basin (6) and clear water reserviors (7), conditioning tank (1) pass through elevator pump (8) it being connected to anoxic pond (2), anoxic pond (2), aerobic tank (3), secondary settling tank (5), clear water reserviors (7) are set gradually, anoxic pond (2), It is equipped with Aeration fan (4) above aerobic tank (3), secondary settling tank (5) is connected to storage basin (6), and the aerobic tank (3) passes through back Flow tube is connected to conditioning tank (1).
2. a kind of equipment sewerage integrated using nitrification liquid reflux enhancing according to claim 1, which is characterized in that institute Conditioning tank (1) front end stated is provided with the thickness twice grid to sewage primary treatment.
3. a kind of equipment sewerage integrated using nitrification liquid reflux enhancing according to claim 1, which is characterized in that institute The liquid level for the aerobic tank (3) stated is higher than conditioning tank (1), and the refluxing opening being arranged on aerobic tank (3) is connected with return pipe, return pipe End go deep into conditioning tank (1).
4. a kind of equipment sewerage integrated using nitrification liquid reflux enhancing according to claim 3, which is characterized in that institute The end for the return pipe stated is equipped with ball-cock assembly (9), and when the liquid level of conditioning tank (1) is lower than this liquid level, backflow functionality is opened;When Liquid level in conditioning tank (1) designs liquid level not less than ball-cock assembly, and backflow functionality stops.
5. a kind of impact resistance method for enhancing sewerage integrated equipment using nitrification liquid reflux, which is characterized in that its step Are as follows: sewage enters grille well and carries out primary treatment, by the artificial grid of thickness twice by the solid and hair of larger size in sewage After hair etc. is retained, into conditioning tank (1), sewage carries out anaerobic digestion and separation of solid and liquid here, and most of density is smaller Suspended matter float to form dross, most of biggish solid of density, as sandstone is deposited in the bottom of conditioning tank (1);Conditioning tank (1) conditioning tank sewage lifting to anoxic pond (2) are started to carry out biochemical treatment, sewage passes sequentially through anoxic by the elevator pump (8) in After the processing of pond (2) and aerobic tank (3), sludge settling is carried out in secondary settling tank (5), sludge is discharged into storage basin (6), secondary settling tank (5) Supernatant gravity flow enter clear water reserviors (7), form clear water, clear water is by gravity flow or is promoted and is discharged into neighbouring water body.
CN201910210166.9A 2019-03-19 2019-03-19 It is a kind of to enhance sewerage integrated equipment and impact resistance method using nitrification liquid reflux Pending CN110240350A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110510830A (en) * 2019-09-23 2019-11-29 苏州首创嘉净环保科技股份有限公司 A kind of sewage disposal device promoting anoxic pond aeration stirring effect

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CN203768187U (en) * 2014-03-31 2014-08-13 江苏省交通规划设计院股份有限公司 Continuous loop aerated domestic sewage treatment device
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110510830A (en) * 2019-09-23 2019-11-29 苏州首创嘉净环保科技股份有限公司 A kind of sewage disposal device promoting anoxic pond aeration stirring effect

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