CN105859042A - Sewage treatment method and system - Google Patents

Sewage treatment method and system Download PDF

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Publication number
CN105859042A
CN105859042A CN201610332946.7A CN201610332946A CN105859042A CN 105859042 A CN105859042 A CN 105859042A CN 201610332946 A CN201610332946 A CN 201610332946A CN 105859042 A CN105859042 A CN 105859042A
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China
Prior art keywords
sewage
treatment
anaerobic
short
denitrification
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CN201610332946.7A
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Chinese (zh)
Inventor
孙飞云
赵杰
董文艺
刘彤宙
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Shenzhen Graduate School Harbin Institute of Technology
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Shenzhen Graduate School Harbin Institute of Technology
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Priority to CN201610332946.7A priority Critical patent/CN105859042A/en
Publication of CN105859042A publication Critical patent/CN105859042A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water, or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/043—Treatment of partial or bypass streams
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/28—Anaerobic digestion processes
    • C02F3/282—Anaerobic digestion processes using anaerobic sequencing batch reactors
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/302—Nitrification and denitrification treatment

Abstract

The invention discloses a sewage treatment method and system. The method comprises the following steps: conveying sewage in a water collection tank to a coagulative precipitation tank for coagulative precipitation; conveying the sewage treated by the coagulative precipitation tank into an anaerobic sequencing batch reactor for anaerobic treatment; conveying the sewage subjected to anaerobic treatment into a shortcut nitrification denitrification sequencing batch reactor for shortcut nitrification denitrification treatment; conveying the sewage subjected to shortcut nitrification denitrification treatment into an advanced oxidation reactor for advanced oxidization treatment; conveying the sewage subjected to advanced oxidation into a deep biological treatment device for deep biological combination treatment; conveying the sewage subjected to deep biological treatment device into a nanofiltration device for filtering; discharging the filtered sewage.

Description

A kind of sewage water treatment method and system
Technical field
The present invention relates to technical field of sewage, particularly relate to a kind of sewage water treatment method and be System.
Background technology
At present, the Domestic Waste Collection fortune principal mode of China receives fortune, rubbish from cooking therein for mixing Etc. component due to features such as moisture content are higher, organic composition is complicated, spatial and temporal distributions otherness is bigger, The house refuse causing mixed collection is difficult to be directly entered process disposal process and realizes resource reclaim.Pass System the dehydration technique for mixed collection house refuse mainly include garbage transfer station compression dehydration, Rubbish material pit collapse of setting processes and realizes aerobe fermentation dehydration etc. of holding concurrently, and the former is owing to taking up an area little and distribution zero Dissipate, be difficult to ensure that the cleaning of garbage dewatering, safety, with efficiently, there is also dehydration simultaneously and pollute anti- Control technique and equipment uneven congruence problem, cause that its dewatering efficiency is the highest, pollution prevention difficulty big and The situations such as clean and safe；The latter then exists that dewatering efficiency is unstable, floor space big, sanitary condition The problems such as difference, cause garbage treatment quantity by the present situation of material pit capacity limit.Therefore, send out in recent years Having opened up high pressure or super-pressure rubbish fast dewatering technology, the dilatation not only reducing rubbish material pit needs Ask, it is thus also avoided that stench overflows, is difficult to the problems such as cleaning, also makes garbage dewatering no longer by rubbish simultaneously The factor impacts such as rubbish composition, amblent air temperature, improve technology and the managerial skills of garbage disposal.
At the development of house refuse fast dewatering technology and the application concentration to rubbish mechanical removal water Reason proposes higher technology requirement.Mechanical removal water is without the facultative sweat of material pit, passes through The modes such as the high-pressure extrusion mixed liquor that quick separating goes out from Fresh Life rubbish.Rubbish removing sewage Generation affected by factors, including rubbish factor, climatic factor, surface and ground water Intrusion, the anaerobic digestion process of microorganism and time factor.In rubbish Quick mechanical dehydration In, the generation of waste water, feature forecast of distribution are to realize the important prerequisite that wastewater to reach standard processes.At present, Waste water in garbage disposal also exists that organic pollution constituent species is various, water quality and quantity changes greatly, The features such as tenor is high, ammonia-nitrogen content is high, nutrient is out of proportion, cause existing process The problems such as technique is tediously long, and operation is complicated and energy consumption is higher.Therefore, further investigate waste water feature, Develop efficient process technique up to standard imperative.
The contaminated wastewater species contained in rubbish is a lot, mainly contains organic pollutants, nitrogenous chemical combination Thing and metal ion etc., particularly through Quick mechanical dehydration removing water in volatile fatty acid relatively Few, and the organic matter proportion containing more aromatic carboxyl of intermediate molecular weight is relatively large, and difficult Degraded macromolecular and dissolubility humus content are the most relatively low.Due to the waste water water in garbage processing procedure The property complicated and changeable of matter, there is presently no a kind of all-round applicable garbage disposal whole operation phase and prison The treatment technology of pipe phase.
Summary of the invention
The technical problem that present invention mainly solves is to provide a kind of sewage water treatment method and system, energy Enough realization carries out efficient, stable, short distance, low energy to complicated component, sewage that pollutant levels are high The process of consumption.
For solving above-mentioned technical problem, the present invention provides a kind of sewage water treatment method, including walking as follows Rapid:
Sewage transport in collecting-tank to coagulative precipitation tank is carried out coagulating kinetics；
Sewage transport after coagulating kinetics to Anaerobic Sequencing Bath Reactor is carried out Anaerobic Treatment；
Sewage transport after Anaerobic Treatment is carried out short to short-cut nitrification and denitrification sequencing batch reactor Journey nitration denitrification denitrogenation processes；
Sewage transport after short-cut nitrification and denitrification denitrogenation processing is carried out to advanced oxidation reactor Advanced oxidation processes；
Sewage transport after being processed by advanced oxidation carries out the biological degree of depth to degree of depth biological treatment device In conjunction with processing；
Sewage transport after biological degree of depth combination being processed carries out filtration treatment to nanofiltration device；
Sewage after exhaust filtering process.
Wherein, described sewage transport in collecting-tank to coagulative precipitation tank is carried out coagulating kinetics Step also include: mud produced by coagulating kinetics is transported to sewage sludge storage pond；
Described sewage transport after coagulating kinetics to Anaerobic Sequencing Bath Reactor is carried out anaerobism The step processed also includes: mud produced by Anaerobic Treatment is transported to sewage sludge storage pond；
Described sewage transport after Anaerobic Treatment is entered to short-cut nitrification and denitrification sequencing batch reactor The step of row short-cut nitrification and denitrification denitrogenation processing also includes: by short-cut nitrification and denitrification denitrogenation processing Produced mud is transported to sewage sludge storage pond；
Described method also includes:
In described sewage sludge storage pond, the mud gross weight of storage reaches to control mud during predetermined threshold Filter press carries out press filtration process to described mud, and exports press filtration water and dewatered sludge；
Described press filtration water is delivered to collecting-tank, and described dewatered sludge is transported to backfill landfill Field carries out landfill disposal.
Wherein, described sewage transport after coagulating kinetics to Anaerobic Sequencing Bath Reactor is carried out The step of Anaerobic Treatment also includes:
A part for sewage after described Anaerobic Treatment is transported to short-cut nitrification and denitrification batch-type Reactor, is back to anaerobic sequencing batch bioreactor by the another part after described Anaerobic Treatment In.
Wherein, it is characterised in that described by anti-for the sewage transport after Anaerobic Treatment to short distance nitration nitre Change sequencing batch reactor carries out the step of short-cut nitrification and denitrification denitrogenation processing and also includes:
Output imflammable gas, collects described imflammable gas and is transported to device for converting electric energy and turn Turn to electric energy output.
In order to solve the problems referred to above, present invention also offers a kind of sewage disposal system, its feature exists In, including:
Collecting-tank, is used for storing raw sewerage；
Coagulative precipitation tank, for carrying out coagulating kinetics to described raw sewerage；
Anaerobic sequencing batch bioreactor, for carrying out anaerobism to the sewage through coagulating kinetics Process；
Short-cut nitrification and denitrification sequence bioreactor, for entering the sewage through Anaerobic Treatment Row short-cut nitrification and denitrification processes；
Advanced oxidation reactor, for carrying out senior to the sewage processed through short-cut nitrification and denitrification Oxidation processes；
Degree of depth biological treatment device, the modified ultrafiltration membrane arranged including multiple stackings, for process The sewage that advanced oxidation processes carries out biological degree of depth combination and processes；
Nanofiltration device, for the sewage processed through biological degree of depth combination is carried out filtration treatment, and Discharge the sewage through filtration treatment.
Wherein, described sewage disposal system includes sewage sludge storage pond and sludge filter press；
Described coagulative precipitation tank is additionally operable to carrying out described raw sewerage at coagulating sedimentation After reason, the described mud produced through coagulating kinetics is transported to described sewage sludge storage pond；
Described Anaerobic Sequencing Bath Reactor is additionally operable to the described sewage through coagulating kinetics After carrying out Anaerobic Treatment, the described mud produced through Anaerobic Treatment is transported to described sewage sludge storage Pond；
Described short-cut nitrification and denitrification sequencing batch reactor be additionally operable to described through Anaerobic Treatment Sewage carry out short-cut nitrification and denitrification denitrogenation processing after, by described through short-cut nitrification and denitrification The mud that denitrogenation processing produces is transported to described sewage sludge storage pond；
Described sewage sludge storage pond reaches for the mud gross weight of storage in described sewage sludge storage pond Control described sludge filter press during predetermined threshold and described mud is carried out press filtration process, and export press filtration Water and dewatered sludge；
Wherein, described press filtration water is output to described collecting-tank, and described dewatered sludge is transported to backfill Landfill yard.
Wherein, sewage disposal system includes the first chemicals dosing plant, the second chemicals dosing plant, the first stirring Device, the second agitating device, the 3rd agitating device and aerator；
Described first chemicals dosing plant is for carrying out flocculant concentration to described coagulative precipitation tank；
Described second chemicals dosing plant is for carrying out advanced oxidation dispensing to described advanced oxidation reactor；
Described first agitating device for being stirred operation to described coagulative precipitation tank；
Described second agitating device for being stirred behaviour to described anaerobic sequencing batch bioreactor Make；
Described 3rd agitating device is for described short-cut nitrification and denitrification sequence bioreactor It is stirred operation；
Described aerator is for carrying out described short-cut nitrification and denitrification sequence bioreactor Aeration operates.
Wherein, sewage disposal system also includes the first reflux, is used for described at anaerobism A part for the sewage of reason is back to described anaerobic sequencing batch bioreactor.
Wherein, sewage disposal system also includes device for converting electric energy, and described anaerobic sequencing batch is biological anti- Answer device that the described sewage through coagulating sedimentation is carrying out Anaerobic Treatment, produce imflammable gas, Described device for converting electric energy is used for collecting described imflammable gas, and is converted into electric energy output.
Wherein, sewage disposal system also includes the second reflux, for filling described through nanofiltration A part for the sewage putting filtration treatment is back to described anaerobic sequencing batch bioreactor.
The invention has the beneficial effects as follows: be different from the situation of prior art, at one sewage of the present invention Reason method and system, by carrying out coagulating kinetics, Anaerobic Treatment, short distance nitration to sewage Denitrification denitrogenation process, advanced oxidation process, biological degree of depth combination process and the group of filtration treatment Conjunction mode, it is achieved thereby that complicated component, sewage that pollutant levels are high are carried out efficient, stable, Short distance, the process of low energy consumption.
Accompanying drawing explanation
Fig. 1 is the flow chart of the present invention a kind of sewage water treatment method first embodiment；
Fig. 2 is the schematic flow sheet of the present invention a kind of sewage water treatment method the second embodiment；
Fig. 3 is the schematic flow sheet of the present invention a kind of sewage water treatment method the 3rd embodiment；
Fig. 4 is the schematic flow sheet of the present invention a kind of sewage water treatment method the 4th embodiment；
Fig. 5 is the structural representation of the present invention a kind of sewage disposal system first embodiment.
Detailed description of the invention
By further illustrating the technological means and effect thereof that the present invention taked, below in conjunction with this Bright embodiment and accompanying drawing thereof are described in detail.
It is the flow chart of the present invention a kind of sewage water treatment method first embodiment with reference to Fig. 1, Fig. 1, In the present embodiment, comprise the following steps:
S100, carries out coagulating kinetics by the sewage transport in collecting-tank to coagulative precipitation tank；
Wherein, coagulative precipitation tank is the one of sedimentation basin during waste water processes.Coagulation process is industrial Most basic in water and sanitary sewage disposal is also particularly important processing procedure, by adding in water Some medicaments (commonly referred to coagulant and flocculation aid), make the particle energy being difficult in water precipitate mutual Being polymerized and form colloid, then the impurity in water body is combined and forms bigger floccule body.Floccule body There is powerful absorption affinity, suspension can not only be adsorbed, moreover it is possible to absorbed portion bacterium and dissolved matter. Floccule body is increased by absorption, volume and is sunk.
S200, carries out anaerobism by the sewage transport after coagulating kinetics to Anaerobic Sequencing Bath Reactor Process；
Wherein, Anaerobic Sequencing Bath Reactor is referred to as ASBR reactor, Anaerobic Sequencing Bath Reactor Operating process include into water, react, precipitate, 4 stages of draining.Idle stage is also set, Mean that playing water outlet this week terminates to start the time interval of quality inspection to the water inlet of next cycle, can be according to specifically Water quality and processing method are accepted or rejected.
Fill phase: waste water enters ASBR reactor, is stirred by biogas, liquid recycle simultaneously Mixing or machinery is stirred, substrate concentration increases sharply, according to Monod kinetics equation, micro-life Thing metabolic rate increases the most accordingly, until water inlet is complete reaches maximum.Water inlet volume by following because of Element determines: the Sludge Bed settling character etc. of the HRT of design, organic loading OLR and expectation.
The stage of reaction: this stage is the committed step that organic matter is converted into biogas, required time by Following parameters determine: matrix feature and concentration, it is desirable to effluent characteristics, the concentration of mud, reaction Environment temperature etc., wherein stir the impact on COD clearance and methane production, particle become Growth process has important effect.Precipitate phase: stop stirring, allows biological group in the condition stood Lower sedimentation, forms the supernatant of low suspended solid.Reactor now becomes clarifier, sedimentation time Can determine according to the settling character of biology group, typical time period changes between 10～30min, during sedimentation Between can not be long, otherwise because of biogas continue output can cause sedimented particle Eddy diffusion.Mixed liquor Suspended sediment concentration (MLSS), inlet amount are that the biological group of impact is heavy with the ratio (F/M) of biology group amount Reduction of speed rate and the important variable factor of the eliminating limpid degree of liquid.
Bleeding stage: after sufficiently solid-liquor separation completes, discharges supernatant, and displacement of volume is equal to Water inlet volume.Water discharge time is determined by the cumulative volume and drainage rates circulating draining every time.Draining is tied Shu Hou, reactor will enter next one circulation, and corresponding biological group periodically discharges.
S300, enters the sewage transport after Anaerobic Treatment to short-cut nitrification and denitrification sequencing batch reactor Row short-cut nitrification and denitrification denitrogenation processing；
Wherein, traditional biological denitrogenation theory thinks that ammonia nitrogen is made by the bacterium (nitrifier that two classes are different And denitrifying bacterium) ammonia in water is converted into nitrogen and removes.Wherein nitration reaction is thin by two classes again Bacterium substep completes, and mineralized nitrogen is nitrite (NO by first nitrite bacteria2 -), nitre afterwards Nitrite transformation is nitrate (NO by acetic bacterial3 -).Nitration reaction process need to be at aerobic condition Under carry out, and using oxygen as electron acceptor.Denitrification process is by nitrate or Nitrite transformation For N2Process.Denitrifying bacteria can utilize various organic substrate as electron donor, with nitric acid Salt or nitrite, as electron acceptor, carry out anaerobic respiration.
The main cause that tradition denitrogenation technology nitrite nitrogen cannot accumulate is based on following 2 points: from dynamics From the point of view of, mineralized nitrogen is that nitrite nitrogen speed is relatively slow, for the rate-limiting step of whole nitrifying process；From heat Mechanics is seen, the oxidized energy provided for Nitromonas of of unit nitrite nitrogen is only unit ammonium oxidation The 1/4～1/5 of energy is provided for Nitrosomas.Therefore, it is necessary to expire by aoxidizing more nitrite nitrogen Energy needed for foot bacterial growth.
And in constantly exploring, find ammonia oxidation bacteria (AOB) and NOB (NOB) In life habit, there is some difference.By utilizing these difference, nitrifying process can be controlled and exist NO2 -In the stage, stop NO2 -It is further oxidized to NO3 -.Afterwards directly with NO2 -As electronics Whole hydrogen acceptor carries out denitrification.I.e. realize so-called short-cut nitrification and denitrification.
S400, by the sewage transport after short-cut nitrification and denitrification denitrogenation processing to advanced oxidation reactor Carry out advanced oxidation process；
Wherein, advanced oxidation processes also known as doing deep oxidation process, has Strong oxdiative ability to produce Hydroxyl radical free radical (OH) be feature, at HTHP, electricity, sound, light irradiation, catalyst etc. Under reaction condition, big molecule hardly degraded organic substance is made to be oxidized to low toxicity or nontoxic small-molecule substance. Mode according to generation free radical and the difference of reaction condition, can be classified as photochemical oxidation, urge Change wet oxidation, sonochemical oxidation, ozone oxidation, electrochemical oxidation, Fenton oxidation etc..
S500, the sewage transport after being processed by advanced oxidation carries out biology to degree of depth biological treatment device Degree of depth combination processes；
Advanced treatment of wastewater refer to municipal sewage or industrial wastewater after one-level, two stage treatment, in order to The recycle water standard reaching certain make sewage as water resource be back to produce or life further Water treatment procedure.For sewage (waste water) raw water quality and process after water quality requirement can enter one Step uses tertiary treatment or multilevel processing technology, is usually used in removing trace amounts of CO D and BOD in water Organic pollution materials, SS and nitrogen, phosphorus high concentration nutritional material and salt.
Wherein, degree of depth biological treatment device can be membrane bioreactor MBR, is a kind of by film The new type water treatment technology that separative element combines with biological processing unit.Can divide according to the structure of film For Flat Membrane, tubular film and hollow-fibre membrane etc., milipore filter, micro-filtration can be divided into by membrane aperture Film, NF membrane, reverse osmosis membrane etc..
S600, the sewage transport after biological degree of depth combination being processed is carried out at filtration to nanofiltration device Reason；
Wherein, nanofiltration refers to pressure differential as motive force, retaining between counter-infiltration and ultrafiltration In water, particle diameter is a kind of membrane separation technique of nano-scale particle thing.
S700, the sewage after exhaust filtering process.
In sewage water treatment method first embodiment of the present invention, by sewage is carried out at coagulating sedimentation Reason, Anaerobic Treatment, short-cut nitrification and denitrification denitrogenation processing, advanced oxidation process, biological degree of depth knot Conjunction process and the combination of filtration treatment, thus realize complicated component, pollutant levels height Sewage carry out efficient, stable, short distance, the process of low energy consumption.
With reference to Fig. 2, it is the schematic flow sheet of the present invention a kind of sewage water treatment method the second embodiment, In the present embodiment:
S100, carries out the step of coagulating kinetics by the sewage transport in collecting-tank to coagulative precipitation tank Suddenly also include: S101, mud produced by coagulating kinetics is transported to sewage sludge storage pond；
S200, carries out anaerobism by the sewage transport after coagulating kinetics to Anaerobic Sequencing Bath Reactor The step processed also includes: S201, and mud produced by Anaerobic Treatment is transported to sewage sludge storage pond；
S300, enters the sewage transport after Anaerobic Treatment to short-cut nitrification and denitrification sequencing batch reactor The step of row short-cut nitrification and denitrification denitrogenation processing also includes: S301, is taken off by short-cut nitrification and denitrification Nitrogen processes produced mud and is transported to sewage sludge storage pond；
This sewage water treatment method also includes:
S800, in sewage sludge storage pond, the mud gross weight of storage reaches to control mud during predetermined threshold Filter press carries out press filtration process to mud, and exports press filtration water and dewatered sludge；
S900, is delivered to press filtration water collecting-tank, and is transported to dewatered sludge backfill landfill yard Carry out landfill disposal.
With reference to Fig. 3, it is the schematic flow sheet of the present invention a kind of sewage water treatment method the 3rd embodiment, In the present embodiment:
S200, carries out anaerobism by the sewage transport after coagulating kinetics to Anaerobic Sequencing Bath Reactor The step processed also includes:
S202, is transported to short-cut nitrification and denitrification batch-type by a part for the sewage after Anaerobic Treatment Reactor, is back to the another part after Anaerobic Treatment in anaerobic sequencing batch bioreactor.
With reference to Fig. 4, it is the schematic flow sheet of the present invention a kind of sewage water treatment method the 4th embodiment, In the present embodiment:
S300, enters the sewage transport after Anaerobic Treatment to short-cut nitrification and denitrification sequencing batch reactor The step of row short-cut nitrification and denitrification denitrogenation processing also includes:
S302, exports imflammable gas, is collected by imflammable gas and be transported to device for converting electric energy It is converted into electric energy output.
In this embodiment, by reclaiming and utilizing imflammable gas, it is achieved that the recovery profit of the energy With, reduce energy consumption.
The present invention above-mentioned sewage water treatment method the second embodiment, the 3rd embodiment and the 4th embodiment Can also be combined with each other.
With reference to Fig. 5, it is the structural representation of the present invention a kind of sewage disposal system first embodiment, This embodiment includes: collecting-tank 1, is used for storing raw sewerage；Coagulative precipitation tank 2, For raw sewerage is carried out coagulating kinetics；Anaerobic sequencing batch bioreactor 3, For the sewage through coagulating kinetics is carried out Anaerobic Treatment；Short-cut nitrification and denitrification batch-type Bioreactor 4, for carrying out short-cut nitrification and denitrification process to the sewage through Anaerobic Treatment； Advanced oxidation reactor 5, for carrying out senior oxygen to the sewage processed through short-cut nitrification and denitrification Change processes；Degree of depth biological treatment device 6, the modified ultrafiltration membrane arranged including multiple stackings, it is used for The sewage processed through advanced oxidation carries out biological degree of depth combination process；Nanofiltration device 7, is used for The sewage processed through biological degree of depth combination is carried out filtration treatment, and discharges through filtration treatment Sewage.
In one sewage disposal system first embodiment of the present invention, this system is by carrying out sewage The process of coagulating kinetics, Anaerobic Treatment, short-cut nitrification and denitrification denitrogenation processing, advanced oxidation, Biological degree of depth combination process and the combination of filtration treatment, thus realize complicated component, dirt The dye high sewage of substrate concentration carries out efficient, stable, short distance, the process of low energy consumption.
Optionally, sewage disposal system includes sewage sludge storage pond 8 and sludge filter press 9；
Coagulative precipitation tank 2, will be through overmulling after raw sewerage is carried out coagulating kinetics The mud that solidifying precipitation process produces is transported to sewage sludge storage pond 8；
Anaerobic Sequencing Bath Reactor 3 is carrying out Anaerobic Treatment to the sewage through coagulating kinetics After, the mud produced through Anaerobic Treatment is transported to described sewage sludge storage pond 8；
Short-cut nitrification and denitrification sequencing batch reactor 4 is carrying out short distance to the sewage through Anaerobic Treatment After nitration denitrification denitrogenation processes, the mud that will produce through short-cut nitrification and denitrification denitrogenation processing It is transported to sewage sludge storage pond 8；
Sewage sludge storage pond 8 controls dirt when the mud gross weight of storage in pond reaches predetermined threshold Mud filter press 9 carries out press filtration process to mud, and exports press filtration water and dewatered sludge；
Wherein, press filtration water is output to collecting-tank, and dewatered sludge is transported to backfill landfill yard.
Optionally, sewage disposal system include first chemicals dosing plant the 10, second chemicals dosing plant 11, First agitating device the 12, second agitating device the 13, the 3rd agitating device 14 and aerator 15；
First chemicals dosing plant 10 is for carrying out flocculant concentration to coagulative precipitation tank 2；
Second chemicals dosing plant 11 is for carrying out advanced oxidation dispensing to advanced oxidation reactor 5；
First agitating device 12 for being stirred operation to coagulative precipitation tank 2；
Second agitating device 13 for being stirred operation to anaerobic sequencing batch bioreactor 3；
3rd agitating device 14 is for carrying out short-cut nitrification and denitrification sequence bioreactor 4 Stirring operation；
Aerator 15 is for carrying out aeration to short-cut nitrification and denitrification sequence bioreactor 4 Operation.
Wherein, aeration, refer to force the oxygen in air the process of transfer in liquid, its objective is Obtain enough dissolved oxygens.Additionally, suspended substance sinks in aeration also prevents pond, have in strengthening pond The purpose that machine thing contacts with microorganism and dissolved oxygen.Thus microorganism is having sufficient dissolving in ensureing pond Under conditions of oxygen, to oxygenolysis organic in sewage.
Optionally, sewage disposal system also includes the first reflux 16, and being used for will be at anaerobism A part for the sewage of reason is back to anaerobic sequencing batch bioreactor 3.
Optionally, sewage disposal system also includes device for converting electric energy 17, and anaerobic sequencing batch is biological anti- Answer device 3 that the sewage through coagulating sedimentation is carrying out Anaerobic Treatment, produce imflammable gas, electricity Can be used for collecting described imflammable gas by conversion equipment 17, and be converted into electric energy output, by returning Receive and utilize imflammable gas, it is achieved that the recycling of the energy, reducing energy consumption.
Optionally, sewage disposal system also includes the second reflux 18, for filling through nanofiltration A part for the sewage putting 7 filtration treatment is back to anaerobic sequencing batch bioreactor 3.
Wherein, that a part of sewage of anaerobic sequencing batch bioreactor 3 of refluxing back is through nanofiltration The underclad portion of the sewage after device filtration treatment.
The foregoing is only embodiments of the present invention, not thereby limit the patent model of the present invention Enclosing, every equivalent structure utilizing description of the invention and accompanying drawing content to be made or equivalence flow process become Change, or be directly or indirectly used in other relevant technical fields, be the most in like manner included in the present invention's In scope of patent protection.

Claims (10)

1. a sewage water treatment method, it is characterised in that comprise the steps:
Sewage transport in collecting-tank to coagulative precipitation tank is carried out coagulating kinetics；
Sewage transport after coagulating kinetics to Anaerobic Sequencing Bath Reactor is carried out Anaerobic Treatment；
Sewage transport after Anaerobic Treatment is carried out short to short-cut nitrification and denitrification sequencing batch reactor Journey nitration denitrification denitrogenation processes；
Sewage transport after short-cut nitrification and denitrification denitrogenation processing is carried out to advanced oxidation reactor Advanced oxidation processes；
Sewage transport after being processed by advanced oxidation carries out the biological degree of depth to degree of depth biological treatment device In conjunction with processing；
Sewage transport after biological degree of depth combination being processed carries out filtration treatment to nanofiltration device；
Sewage after exhaust filtering process.
Sewage water treatment method the most according to claim 1, it is characterised in that
The described step that sewage transport in collecting-tank to coagulative precipitation tank is carried out coagulating kinetics Suddenly also include: mud produced by coagulating kinetics is transported to sewage sludge storage pond；
Described sewage transport after coagulating kinetics to Anaerobic Sequencing Bath Reactor is carried out anaerobism The step processed also includes: mud produced by Anaerobic Treatment is transported to sewage sludge storage pond；
Described sewage transport after Anaerobic Treatment is entered to short-cut nitrification and denitrification sequencing batch reactor The step of row short-cut nitrification and denitrification denitrogenation processing also includes: by short-cut nitrification and denitrification denitrogenation processing Produced mud is transported to sewage sludge storage pond；
Described method also includes:
In described sewage sludge storage pond, the mud gross weight of storage reaches to control mud during predetermined threshold Filter press carries out press filtration process to described mud, and exports press filtration water and dewatered sludge；
Described press filtration water is delivered to collecting-tank, and described dewatered sludge is transported to backfill landfill Field carries out landfill disposal.
Sewage water treatment method the most according to claim 1, it is characterised in that described by coagulation The step that sewage transport after precipitation process carries out Anaerobic Treatment to Anaerobic Sequencing Bath Reactor is also wrapped Include:
A part for sewage after described Anaerobic Treatment is transported to short-cut nitrification and denitrification batch-type Reactor, is back to anaerobic sequencing batch bioreactor by the another part after described Anaerobic Treatment In.
Sewage water treatment method the most according to claim 1, it is characterised in that described by anaerobism Sewage transport after process carries out the anti-nitre of short distance nitration to short-cut nitrification and denitrification sequencing batch reactor The step changing denitrogenation processing also includes:
Output imflammable gas, collects described imflammable gas and is transported to device for converting electric energy and turn Turn to electric energy output.
5. a sewage disposal system, it is characterised in that including:
Collecting-tank, is used for storing raw sewerage；
Coagulative precipitation tank, for carrying out coagulating kinetics to described raw sewerage；
Anaerobic sequencing batch bioreactor, for carrying out anaerobism to the sewage through coagulating kinetics Process；
Short-cut nitrification and denitrification sequence bioreactor, for entering the sewage through Anaerobic Treatment Row short-cut nitrification and denitrification processes；
Advanced oxidation reactor, for carrying out senior to the sewage processed through short-cut nitrification and denitrification Oxidation processes；
Degree of depth biological treatment device, the modified ultrafiltration membrane arranged including multiple stackings, for process The sewage that advanced oxidation processes carries out biological degree of depth combination and processes；
Nanofiltration device, for the sewage processed through biological degree of depth combination is carried out filtration treatment, and Discharge the sewage through filtration treatment.
Sewage disposal system the most according to claim 5, it is characterised in that
Described sewage disposal system includes sewage sludge storage pond and sludge filter press；
Described coagulative precipitation tank is additionally operable to carrying out described raw sewerage at coagulating sedimentation After reason, the described mud produced through coagulating kinetics is transported to described sewage sludge storage pond；
Described Anaerobic Sequencing Bath Reactor is additionally operable to the described sewage through coagulating kinetics After carrying out Anaerobic Treatment, the described mud produced through Anaerobic Treatment is transported to described sewage sludge storage Pond；
Described short-cut nitrification and denitrification sequencing batch reactor be additionally operable to described through Anaerobic Treatment Sewage carry out short-cut nitrification and denitrification denitrogenation processing after, by described through short-cut nitrification and denitrification The mud that denitrogenation processing produces is transported to described sewage sludge storage pond；
Described sewage sludge storage pond reaches for the mud gross weight of storage in described sewage sludge storage pond Control described sludge filter press during predetermined threshold and described mud is carried out press filtration process, and export press filtration Water and dewatered sludge；
Wherein, described press filtration water is output to described collecting-tank, and described dewatered sludge is transported to backfill Landfill yard.
Sewage disposal system the most according to claim 5, it is characterised in that
Sewage disposal system include the first chemicals dosing plant, the second chemicals dosing plant, the first agitating device, Second agitating device, the 3rd agitating device and aerator；
Described first chemicals dosing plant is for carrying out flocculant concentration to described coagulative precipitation tank；
Described second chemicals dosing plant is for carrying out advanced oxidation dispensing to described advanced oxidation reactor；
Described first agitating device for being stirred operation to described coagulative precipitation tank；
Described second agitating device for being stirred behaviour to described anaerobic sequencing batch bioreactor Make；
Described 3rd agitating device is for described short-cut nitrification and denitrification sequence bioreactor It is stirred operation；
Described aerator is for carrying out described short-cut nitrification and denitrification sequence bioreactor Aeration operates.
Sewage disposal system the most according to claim 5, it is characterised in that
Sewage disposal system also includes the first reflux, for by the described dirt through Anaerobic Treatment A part for water is back to described anaerobic sequencing batch bioreactor.
Sewage disposal system the most according to claim 5, it is characterised in that
Sewage disposal system also includes that device for converting electric energy, described anaerobic sequencing batch bioreactor exist The described sewage through coagulating sedimentation is carried out Anaerobic Treatment, produces imflammable gas, described electricity Can be used for collecting described imflammable gas by conversion equipment, and be converted into electric energy output.
Sewage disposal system the most according to claim 5, it is characterised in that
Sewage disposal system also includes the second reflux, for filtering described through nanofiltration device A part for the sewage processed is back to described anaerobic sequencing batch bioreactor.
CN201610332946.7A 2016-05-18 2016-05-18 Sewage treatment method and system Pending CN105859042A (en)

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Application publication date: 20160817