CN109368771A - It continuously returns fraction activated sludge and quickly handles high concentrated organic wastewater technique and device - Google Patents
It continuously returns fraction activated sludge and quickly handles high concentrated organic wastewater technique and device Download PDFInfo
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- CN109368771A CN109368771A CN201811442828.7A CN201811442828A CN109368771A CN 109368771 A CN109368771 A CN 109368771A CN 201811442828 A CN201811442828 A CN 201811442828A CN 109368771 A CN109368771 A CN 109368771A
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- 238000000034 method Methods 0.000 title claims abstract description 55
- 239000010802 sludge Substances 0.000 title claims abstract description 53
- 239000002351 wastewater Substances 0.000 title claims abstract description 36
- 238000001556 precipitation Methods 0.000 claims abstract description 76
- 238000012545 processing Methods 0.000 claims abstract description 52
- 239000010865 sewage Substances 0.000 claims abstract description 39
- 102000004190 Enzymes Human genes 0.000 claims abstract description 34
- 108090000790 Enzymes Proteins 0.000 claims abstract description 34
- 239000002131 composite material Substances 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 238000004064 recycling Methods 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 238000005273 aeration Methods 0.000 claims description 66
- 239000007788 liquid Substances 0.000 claims description 31
- 238000005842 biochemical reaction Methods 0.000 claims description 27
- 239000006228 supernatant Substances 0.000 claims description 27
- 239000012528 membrane Substances 0.000 claims description 26
- 238000011084 recovery Methods 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 19
- 230000001376 precipitating effect Effects 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 5
- 230000001351 cycling effect Effects 0.000 claims description 4
- 230000003252 repetitive effect Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000010790 dilution Methods 0.000 claims description 2
- 239000012895 dilution Substances 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 239000003337 fertilizer Substances 0.000 description 9
- 238000004062 sedimentation Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 244000144972 livestock Species 0.000 description 4
- 244000144977 poultry Species 0.000 description 4
- 230000008676 import Effects 0.000 description 3
- 230000037452 priming Effects 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000009395 breeding Methods 0.000 description 2
- 230000001488 breeding effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000003516 soil conditioner Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- C02F3/02—Aerobic processes
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/347—Use of yeasts or fungi
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mycology (AREA)
- Activated Sludge Processes (AREA)
Abstract
The present invention relates to technical field of waste water processing, quickly handle high concentrated organic wastewater technique and device more particularly, to a kind of fraction activated sludge that continuously returns.The technique includes that (1) carries out first sink to obtain primary precipitation sludge and primary precipitation sewage to waste water；(2) aerobic treatment is carried out to primary precipitation sewage, during which stream plus composite enzyme obtain treatment fluid and processing sludge；(3) secondary precipitation is carried out to treatment fluid and handles to obtain secondary precipitation treatment fluid and secondary precipitation sludge；(4) clear water and the composite enzyme that is recovered by filtration, clear water discharge are filtered to obtain to secondary precipitation treatment fluid, the composite enzyme of recycling continues to be back to aerobic treatment section；(5) step (1)-(4) are repeated.The technique adapting device circular treatment, can guarantee treatment effect, stable and reliable operation.
Description
Technical field
The present invention relates to technical field of waste water processing, quickly handle height more particularly, to a kind of fraction activated sludge that continuously returns
Concentration organic wastewater technique and device.
Background technique
With rural area kind aquaculture grow rapidly, while increasing agricultural incomes, caused by Rural Plane Source Pollution increasingly
Aggravation, the pollution problem of the especially high concentrated organic wastewaters such as livestock and poultry cultivation waste are especially prominent.
High concentrated organic wastewater processing is the problem in sewage treatment field, the side that sewage treatment is most widely used, most economical
Method is biological treatment, it experienced the evolution and transition of last 100 years, has become the most critical technology of environment pollution control at present.
However, existing biological treatment is limited for the processing of high concentrated organic wastewater, the processing time is long, and processing is not thorough.Therefore, it seeks
Ask treatment effeciency higher, the processing method for the breeding wastewater that processing cost is lower, the processing time is shorter is that people pursue always
Target；And developing operation is convenient for management, handles the processing method of efficient high concentrated organic wastewater, alleviates the environmental protection of producer
Pressure, the vitality for improving livestock and poultry breeding industry are also particularly important.
Summary of the invention
The present invention provides a kind of fraction activated sludge that continuously returns quickly to handle high concentrated organic wastewater technique and device,
Solve problems of the prior art.
Used technical solution is the present invention to solve above-mentioned technical problem:
One kind continuously returning fraction activated sludge and quickly handles high concentrated organic wastewater technique, including following operating procedure:
(1) primary precipitation processing is carried out to waste water to be processed, obtains primary precipitation sludge and primary precipitation sewage；
(2) aerobic treatment is carried out to the primary precipitation sewage of step (1) processing, during which, stream plus composite enzyme must be located
Manage liquid and processing sludge；
(3) secondary precipitation processing is carried out to the treatment fluid of step (2), obtains secondary precipitation treatment fluid and secondary precipitation sludge；
(4) the secondary precipitation treatment fluid obtained to step (3) is filtered processing, the compound ferment for obtaining clear water and being recovered by filtration
Element, clear water discharge, the composite enzyme of recycling continue to be back to step (2) aerobic treatment section；
(5) repetitive cycling above-mentioned steps (1)-(4).
Step (1)-(4) process cycle is 90-120h in the technique.
The solid content of the composite enzyme is 2-4%.
The dosage of the composite enzyme presses primary precipitation sewage quantity × primary precipitation COD of sewage concentration 1/200-300
Meter.
The composite enzyme carries out stream and adds after diluting by 1:5-10.
The method of operation of step (2) aerobic treatment are as follows: into sewage 1-1.5 hours, aeration 16-20 hours, static 2-
5 hours, draining 1-1.5 hours, circulation carries out；Process cycle 90-120h.
Aeration time section dissolved oxygen concentration is 2-4mg/L, and quiescent time section dissolved oxygen concentration is 0-0.5mg/L.
The waste water of step (1) is the organic wastewater of COD concentration 5000-35000mg/L；Step (3) aerobic treatment is used
The sludge concentration of primary precipitation sewage is 4000-8000mg/L.
Sewage temperature control is at 15-45 DEG C in step (2) aerobic treatment.
The processing of step (1) primary precipitation is natural sedimentation 18-24h；Step (3) secondary precipitation processing is natural sedimentation 18-
24h。
The treatment fluid output of aerobic treatment is used as liquid fertilizer before further including the steps that secondary precipitation processing.
Further include the steps that the precipitating sludge output to primary precipitation processing, aerobic treatment and two-stage precipitation processing.
It continuously returns fraction activated sludge and quickly handles high concentrated organic wastewater technique device, including is sequentially connected first
Grade sedimentation basin, aerobic biochemical reaction unit and second-level settling pond；One charging part of connection, described to add on aerobic biochemical reaction unit
Materials and parts are used for stream plus composite enzyme into aerobic biochemical reaction device；The supernatant outlet of the second-level settling pond is by the road with one
Filter device is connected.
Further include an intermediate liquid pond being connected with the supernatant outlet of aerobic biochemical reaction unit, and respectively with primary
The sludge-tank that sedimentation basin, aerobic biochemical reaction unit and second-level settling pond are connected through sludge output pipe, the supernatant of sludge-tank
Outlet is back to the inlet of the aerobic biochemical reaction unit by the road.
The aerobic biochemical reaction unit includes the aeration tanks that n is sequentially connected in series, the charging part and the 1st aeration tank into
Material mouth is connected；Inlet and liquid outlet, inlet and liquid outlet of each aeration tank through being arranged thereon are equipped on each aeration tank
It is sequentially connected in series；Liquid outlet on n-th aeration tank is connected with the inlet being set on second-level settling pond, exposes in the 2nd aeration tank-the n-th
The outlet tube road being connected with the intermediate liquid pond is equipped on gas pond；Mud discharging mouth on second-level settling pond is through mud extraction pipeline
It is connected with the 1st aeration tank inlet.
The filter device includes a recovery pond, the inlet of recovery pond and second-level settling pond supernatant outlet phase by the road
Even, several membrane modules are equipped with through bracket support in recovery pond, the water outlet side water outlet of membrane module is connected with each other and passes through pipeline
It is connected with the inlet of self-sucking pump being set to outside recovery pond；Self-priming pump discharge is connected with a clear water reserviors by the road；The retention of membrane module
Side is connected with the import for the reflux pump for being set to recycling bottom of pond portion by the road, and dress is reacted in the outlet of reflux pump with aerobic biochemical by the road
It sets connected；Several aeration tubes are equipped on recovery pond bottom surface below membrane module, aeration tube is through air delivering pipeline and is set to recycling
Air blower outside pond is connected；Overflow passage is connected between recovery pond and second-level settling pond.
The filtering membrane aperture of the membrane module is 0.1-0.4 μm；
The charging part is a charge pipe being connected with the 1st aeration tank.
Beneficial effects of the present invention:
Present invention process is easy to operate, short processing time, can guarantee to be effectively treated, sewage treatment place odorless, ring
Border is friendly, stable and reliable operation, invests low with operating cost；It can be measured according to the effluent quality after aerobic treatment and realize liquid
Fertile qualified discharge, meanwhile, filter device realizes the recycling of composite enzyme, utilizes, and clear water index is stablized after filtering, entire technique
Thoroughly, clear water water quality is good, eliminates environmental pollution significantly for processing.The present invention realizes classification and uses, after the aeration and sedimentation of aeration tank
Supernatant can be used as liquid fertilizer-soil conditioner and use, to promoting the activation of indigenous microorganisms and proliferation in soil to have preferable work
With, because supernatant contains composite enzyme, soil with organic matter can be promoted to decompose, soil texture permeability both can be improved,
The nutrient that more can be absorbed is provided for edaphon.This technique equipment therefor scientific structure design, rationally, pass through
In aerobic treatment, stream plus composite enzyme, sewage in aerobic biochemical reaction unit and second-level settling pond is carried out at circulation
Reason while taking full advantage of ferment progress biological respinse, reduces sewage until meeting process cycle, liquid fertilizer qualified discharge
The drawbacks of handling halfway direct emission, use are more flexible, efficient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of present invention process device；
Fig. 2 is filter device schematic diagram of internal structure in Fig. 1.
In figure, 1 primary clarifier, 2 aerobic biochemical reaction units, 2.1 the 1st aeration tanks, 2.2 the 2nd aeration tanks, 2.n n-th expose
Gas pond, 3 second-level settling ponds, 4 charging parts, 5 filter devices, 6 intermediate liquid ponds, 7 sludge-tanks, 8 outlet tube roads, 9 mud lines,
10 mud extraction pipelines, 11 clear water reserviors, 12 overflow passages, 13 recovery ponds, 14 membrane modules, 15 self priming pumps, 16 reflux pumps, 17 aeration tubes,
18 air delivering pipelines, 19 air blowers.
Specific embodiment
In order to clarify the technical characteristics of the invention, being explained in detail below by specific embodiment the present invention
It states.
The present invention is purchased from Beijing middle peasant Bo Te biotechnology Co., Ltd with composite enzyme.
Embodiment 1
To the technique that the organic wastewater for the COD concentration 20000mg/L that livestock and poultry cultivation generates is handled, including operate as follows
Step:
(1) primary precipitation processing is carried out to waste water to be processed, natural sedimentation for 24 hours, obtains primary precipitation sludge and primary precipitation
Sewage；
(2) sludge concentration of the primary precipitation sewage of step (1) processing is 6000mg/L, is exposed into aerobic biochemical pool
Gas disposal, sewage temperature control is at 35-40 DEG C in aerobic biochemical pool；Period, into aerobic biochemical pool, stream plus composite enzyme, compound
The dosage of ferment based on primary precipitation sewage quantity × primary precipitation COD of sewage concentration 1/300, the composite enzyme that measures by
Stream is carried out after 1:5 dilution to add；90h is reacted, treatment fluid and processing sludge are obtained；
(3) secondary precipitation is carried out to the treatment fluid that step (2) obtains, natural sedimentation 4h obtains secondary precipitation treatment fluid and two
Secondary precipitating sludge；At the same time, the supernatant in aerobic biochemical pool is used by pipeline outlet as liquid fertilizer, is used for soil improvement
Agent；I.e. after aerobic treatment and secondary precipitation processing sufficiently, the supernatant treatment fluid of aerobic treatment is exported into a part
As liquid fertilizer, another part carries out two-stage precipitation processing in secondary precipitation processing pond；
(4) processing is filtered to step (3) secondary precipitation treatment fluid, the composite enzyme for obtaining clear water and being recovered by filtration, clearly
Water discharge, the composite enzyme of recycling continue to be back to step (2) aerobic treatment section；
Above-mentioned process cycle 90-100h；
(5) next batch wastewater treatment is continued in repetitive cycling above-mentioned steps (1)-(4).
The method of operation of step (3) aerobic biochemical pool are as follows: into primary precipitation sewage 1-1.5 hours, aeration 18 hours, quiet
Only 3 hours, draining 1-1.5 hours, draining carry out secondary precipitation, and secondary precipitation water continues back the front end water inlet of aerobic biochemical pool,
Circulation carries out.
Aeration time section dissolved oxygen concentration is 2-4mg/L, and quiescent time section dissolved oxygen concentration is 0-0.5mg/L.
It further include being stored to the precipitating sludge output of primary precipitation processing, aerobic treatment and two-stage precipitation processing
The step of.
The precipitating sludge output of primary precipitation processing, aerobic treatment and two-stage precipitation processing enters sludge-tank, sludge
The supernatant in pond is back to aerobic treatment section, forms circulation.
Such as Fig. 1,2, above-mentioned technique device, including sequentially connected primary clarifier 1, aerobic biochemical reaction unit 2 and
Second-level settling pond 3；One charging part 4 of connection, the charging part are used to fill to aerobic biochemical reaction on aerobic biochemical reaction unit
Set stream plus the ferment of reaction, i.e., aforementioned composite enzyme in 2；The supernatant outlet of the second-level settling pond 3 by the road with a mistake
Device 5 is filtered to be connected.It further include an intermediate liquid pond 6 being connected with the supernatant outlet of aerobic biochemical reaction unit 2, and respectively
The sludge-tank 7 being connected with primary clarifier 1, aerobic biochemical reaction unit 2 and second-level settling pond 3 through sludge output pipe, sludge
The supernatant outlet in pond 7 is back to the inlet of the aerobic biochemical reaction unit 2 by the road.
The aerobic biochemical reaction unit includes 5 grades of aeration tanks being sequentially connected in series, the charging part and the 1st aeration tank 2.1
Feed inlet be connected；Inlet and liquid outlet are equipped on each aeration tank；On n-th aeration tank 2.n (i.e. the 5th aeration tank)
Liquid outlet is connected with the inlet being set on second-level settling pond 3, in the 2nd aeration tank 2.2- the n-th aeration tank 2.n and two-stage precipitation
The outlet tube road 8 being connected with the intermediate liquid pond 6 is equipped on pond 3；Mud discharging mouth on second-level settling pond 3 is through sludge out pipe
Road 10 is connected with 2.1 inlet of the 1st aeration tank；Primary clarifier 1, each aeration tank and second-level settling pond 3 are through mud line 9
It is connected with the sludge-tank 7.The supernatant outlet of each aeration tank and second-level settling pond is through the outlet tube road 8 and intermediate liquid pond
6 are connected.
The filter device 5 includes a recovery pond 13, and the inlet and 3 supernatant outlet of second-level settling pond of recovery pond 13 pass through
Pipeline is connected, and is equipped with several membrane modules 14 through bracket-suspending support in recovery pond, the water outlet side water outlet of membrane module mutually interconnects
It connects and passes through pipeline and be connected with 15 import of self priming pump being set to outside recovery pond；Self-priming pump discharge by the road with 11 phase of a clear water reserviors
Even；The spoil disposal side of membrane module 14 is connected with the import for the reflux pump 16 for being set to recycling bottom of pond portion by the road, the outlet warp of reflux pump
Pipeline is connected with aerobic biochemical reaction unit；It is equipped with several aeration tubes 17 on recovery pond bottom surface below membrane module 14, exposes
Tracheae is connected through air delivering pipeline 18 with the air blower 19 being set to outside recovery pond；It connects and overflows between recovery pond and second-level settling pond
Flow tube road 12.
The filtering membrane aperture of the membrane module is 0.1-0.4 μm；
The charging part is a charge pipe being connected with the 1st aeration tank 2.1.
Specific work process: high concentrated organic wastewater to be processed, which initially enters, to carry out just sinking in primary clarifier 1, general quiet
Setting completion for 24 hours, just heavy processing, the primary precipitation sludge after just sinking are discharged into sludge-tank by the mud line 9 being connected with primary clarifier
In 7, primary precipitation sewage is then delivered to by the road in the 1st aeration tank 2.1 of aerobic biochemical reaction unit, and by each aeration tank
Inlet realizes primary precipitation sewage being connected in adjacent aeration tank with liquid outlet, and the sewage in afterbody aeration tank is through going out
Liquid mouth enters in second-level settling pond 3；Run aeration tank: according into primary precipitation sewage 1-1.5 hour, be aerated 16-20 hours, it is quiet
Only 2-5 hours, drain 1-1.5 hour modes, be discharged into second-level settling pond 3, second-level settling pond 3 by the road with and exposure
Gas pond is connected, and realizes and carries out cyclic aeration processing in aeration tank, at the same time, by being connected with the feed inlet of the 1st aeration tank
Charging part 4- charge pipe stream add prepared composite enzyme, the dosage of composite enzyme according to aforesaid standards calculate stream plus, stream plus
Speed is without particular/special requirement；The biological respinse processing that composite enzyme realizes aeration process is added.In this treatment process, treatment fluid is not
Break between each aeration tank and second-level settling pond circulation conveying, reaction, i.e., the sewage in second-level settling pond 3 is through mud extraction pipeline 10
Again it is delivered in the 1st aeration tank, each aeration tank is sequentially communicated processing, the completion of aerobic biochemical reaction treatment, entire process cycle
90-120h closes the mud extraction pipeline 10 that second-level settling pond is connect with the 1st aeration tank, opens each aeration tank and second-level settling pond is equal
The supernatant of the outlet tube road 8 being connected with sludge-tank 7, aeration tank and second-level settling pond 3 enters intermediate liquid through outlet tube road 8
Pond 6 obtains liquid fertilizer, and discharge system uses, and at the same time, the treatment fluid in second-level settling pond 3 carries out secondary precipitation, stands 4-6h
Secondary precipitation is completed, is pumped into the supernatant in second-level settling pond is boosted in filter device 5 i.e. recovery pond 13, secondary precipitation
Supernatant afterwards enters in recovery pond 13, realizes the separation of ferment and clear water through membrane module 14, membrane module water outlet side by the road by
Self priming pump 15 exports in clear water to clear water reserviors 11, and the spoil disposal side of the use up to standard of sterilized rear qualified discharge, membrane module retains side
The feed opening position that composite enzyme is transmitted back to the 1st aeration tank 2.1 is then recycled by reflux pump 16, is recycled for next sewage treatment
Process realizes the recycling of composite enzyme, save the cost；The supernatant that recovery pond 13 overflows through overflow passage 12 again
It is transmitted back to second-level settling pond 3.Pay attention to controlling the sludge concentration in recovery pond 13 in 1000mg/L or less.Air pressurizes through air blower
It is discharged afterwards from the aeration tube that membrane support bottom is arranged in, the filter membrane of membrane module is washed away, prevents filter membrane by mycelium
It is stifled Deng dirt, guarantee the stable operation of composite enzyme recyclable device.The sludge of excess sludge, second-level settling pond in each aeration tank is equal
It is discharged into sludge-tank 7 by mud line 9, the sludge in sludge-tank is automatically drained out after reaching setting liquid level, the supernatant of sludge-tank
It is then back in the 1st aeration tank 2.1.The above are a process cycles, period 100h.The process facility can be realized at circulation
Reason, it is flexible and convenient to use.
Embodiment 2
To the technique that the organic wastewater for the COD concentration 35000mg/L that livestock and poultry cultivation generates is handled, including operate as follows
Step:
(1) primary precipitation processing is carried out to waste water to be processed, natural sedimentation 20h obtains primary precipitation sludge and primary precipitation
Sewage；
(2) sludge concentration of the primary precipitation sewage of step (1) processing is 8000mg/L, is exposed into aerobic biochemical pool
Gas disposal, sewage temperature control is at 25-35 DEG C in aerobic biochemical pool；Period, into aerobic biochemical pool, stream adds obtained above multiple
Ferment is closed, the dosage of composite enzyme is based on primary precipitation sewage quantity × primary precipitation COD of sewage concentration 1/200, composite enzyme
Stream is carried out after diluting by 1:10 to add；120h is reacted, treatment fluid and processing sludge are obtained；
(3) secondary precipitation is carried out to the treatment fluid that step (2) obtains, natural sedimentation 6h obtains secondary precipitation treatment fluid and two
Secondary precipitating sludge；At the same time, the supernatant in aerobic biochemical pool is used by pipeline outlet as liquid fertilizer, is used for soil improvement
Agent；I.e. after aerobic treatment and secondary precipitation processing sufficiently, the supernatant treatment fluid of aerobic treatment is exported into a part
As liquid fertilizer, another part carries out two-stage precipitation processing in secondary precipitation processing pond；
(4) processing is filtered to step (3) secondary precipitation treatment fluid, the composite enzyme for obtaining and being recovered by filtration, clear water row
Out, the composite enzyme of recycling continues to be back to step (2) aerobic treatment section；
Above-mentioned process cycle 100-120h；
(5) next batch wastewater treatment is continued in repetitive cycling above-mentioned steps (1)-(4).
The method of operation of step (3) aerobic biochemical pool are as follows: into sewage 1-1.5 hours, aeration 16 hours, 5 hours static, row
Water 1-1.5 hours, circulation carried out, process cycle.
Aeration time section dissolved oxygen concentration is 2-4mg/L, and quiescent time section dissolved oxygen concentration is 0-0.5mg/L.
It further include being stored to the precipitating sludge output of primary precipitation processing, aerobic treatment and two-stage precipitation processing
The step of.
The precipitating sludge output of primary precipitation processing, aerobic treatment and two-stage precipitation processing enters sludge-tank, sludge
The supernatant in pond is back to aerobic treatment section, forms circulation.
Above-mentioned technique device is no longer described in detail with the device of embodiment 1.
Specific work process is no longer described in detail with the course of work of embodiment 1.
Implementation result:
Take the supernatant of the 1st grade of aeration tank used in this technique as liquid fertilizer, index of correlation are as follows: organic matter 6555mg/
L, total nitrogen 940mg/L, total phosphorus 70.93mg/L.
Second-level settling pond water outlet is sterilized through filtering, the clear water being finally discharged, index of correlation are as follows: COD57mg/L,
BOD10.3mg/L, total nitrogen 61.5mg/L, total phosphorus 1.96mg/L, suspended matter < 5mg/L, excrement colibacillus group < 2MPN/100mL.
Compared to existing sewage treatment process and device, present invention process high recycling rate is implemented and is used simply, generally
Can handle within 5-7 days obtain qualified discharge clear water, during which can also obtain by aeration tank precipitating discharge supernatant as can benefit
Liquid fertilizer uses, and realizes classification and uses.
Above-mentioned specific embodiment cannot function as limiting the scope of the invention, for the technology people of the art
For member, any alternate modification or transformation made to embodiment of the present invention are fallen within the scope of protection of the present invention.
Place is not described in detail by the present invention, is the well-known technique of those skilled in the art of the present technique.
Claims (10)
1. a kind of fraction activated sludge that continuously returns quickly handles high concentrated organic wastewater technique, which is characterized in that including grasping as follows
Make step:
(1) primary precipitation processing is carried out to waste water to be processed, obtains primary precipitation sludge and primary precipitation sewage；
(2) aerobic treatment is carried out to the primary precipitation sewage of step (1) processing, during which, stream plus composite enzyme obtain treatment fluid
With processing sludge；
(3) secondary precipitation processing is carried out to the treatment fluid of step (2), obtains secondary precipitation treatment fluid and secondary precipitation sludge；
(4) the secondary precipitation treatment fluid obtained to step (3) is filtered processing, the composite enzyme for obtaining clear water and being recovered by filtration,
Clear water discharge, the composite enzyme of recycling continue to be back to step (2) aerobic treatment section；
(5) repetitive cycling above-mentioned steps (1)-(4).
2. the fraction activated sludge according to claim 1 that continuously returns quickly handles high concentrated organic wastewater technique, feature
It is, the process cycle of the technique is 90-120h.
3. the fraction activated sludge according to claim 1 that continuously returns quickly handles high concentrated organic wastewater technique, feature
It is, the dosage of step (2) composite enzyme is based on primary precipitation sewage quantity × primary precipitation COD of sewage concentration 1/200-300.
4. the fraction activated sludge according to claim 1 that continuously returns quickly handles high concentrated organic wastewater technique, feature
It is, step (2) composite enzyme is added by stream after 1:5-10 dilution.
5. the fraction activated sludge according to claim 1 that continuously returns quickly handles high concentrated organic wastewater technique, feature
It is, the method for operation of step (2) aerobic treatment are as follows: small into sewage 1-1.5 hours, aeration 16-20 hours, static 2-5
When, draining 1-1.5 hour, circulation progress.
6. the fraction activated sludge according to claim 5 that continuously returns quickly handles high concentrated organic wastewater technique, feature
It is, aeration time section dissolved oxygen concentration is 2-4mg/L, and quiescent time section dissolved oxygen concentration is 0-0.5mg/L.
7. the fraction activated sludge according to claim 1 that continuously returns quickly handles high concentrated organic wastewater technique, feature
It is, the waste water of step (1) is the organic wastewater of COD concentration 5000-35000mg/L；Step (2) aerobic treatment is primary
The sludge concentration for precipitating sewage is 4000-8000mg/L.
8. a kind of fraction activated sludge that continuously returns quickly handles high concentrated organic wastewater technique device, which is characterized in that including
Sequentially connected primary clarifier, aerobic biochemical reaction unit and second-level settling pond；One is connected on aerobic biochemical reaction unit
Feed part, and the charging part is used for stream plus composite enzyme into aerobic biochemical reaction device；The supernatant of the second-level settling pond
Outlet is connected with a filter device by the road.
9. the fraction activated sludge according to claim 8 that continuously returns quickly handles high concentrated organic wastewater technique device,
It is characterized in that, further include an intermediate liquid pond being connected with the supernatant outlet of aerobic biochemical reaction unit, and respectively with
Primary clarifier, aerobic biochemical reaction unit and second-level settling pond through sludge output pipe be connected sludge-tank, sludge-tank it is upper
Purified liquor outlet is back to the inlet of the aerobic biochemical reaction unit by the road.
10. the fraction activated sludge according to claim 9 that continuously returns quickly handles high concentrated organic wastewater technique device,
It is characterized in that, the aerobic biochemical reaction unit includes the n aeration tanks being sequentially connected in series, the charging part and the 1st aeration tank
Feed inlet be connected；Inlet and liquid outlet are equipped on each aeration tank；Liquid outlet on n-th aeration tank sinks with set on second level
Inlet on the pond of shallow lake is connected, and is equipped with the outlet tube being connected with the intermediate liquid pond on the-the n-th aeration tank of the 2nd aeration tank
Road；Mud discharging mouth on second-level settling pond is connected through mud extraction pipeline with the 1st aeration tank inlet；
The filter device includes a recovery pond, and the inlet of recovery pond is connected by the road with second-level settling pond supernatant outlet,
Several membrane modules are equipped with through bracket support in recovery pond, the water outlet side water outlet of membrane module is connected with each other and passes through pipeline and set
Inlet of self-sucking pump outside recovery pond is connected；The retention side of membrane module by the road be set to recycling bottom of pond portion reflux pump into
Mouth is connected, and the outlet of reflux pump is connected with aerobic biochemical reaction unit by the road；It is set on recovery pond bottom surface below membrane module
There are several aeration tubes, aeration tube is connected through air delivering pipeline with the air blower being set to outside recovery pond；It is heavy in recovery pond and second level
Shallow lake connects overflow passage between pond；
The filtering membrane aperture of the membrane module is 0.1-0.4 μm；
The charging part is a charge pipe being connected with the 1st aeration tank.
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