CN207031196U - A kind of biochemical treatment apparatus for realizing high CO_2 density - Google Patents
A kind of biochemical treatment apparatus for realizing high CO_2 density Download PDFInfo
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- CN207031196U CN207031196U CN201720856165.8U CN201720856165U CN207031196U CN 207031196 U CN207031196 U CN 207031196U CN 201720856165 U CN201720856165 U CN 201720856165U CN 207031196 U CN207031196 U CN 207031196U
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- 238000004062 sedimentation Methods 0.000 claims abstract description 43
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 27
- 239000001301 oxygen Substances 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 19
- 238000005189 flocculation Methods 0.000 claims description 87
- 230000016615 flocculation Effects 0.000 claims description 87
- 239000010802 sludge Substances 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 230000007423 decrease Effects 0.000 claims description 9
- 238000005273 aeration Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 22
- 239000013043 chemical agent Substances 0.000 abstract description 14
- 239000003344 environmental pollutant Substances 0.000 abstract description 12
- 231100000719 pollutant Toxicity 0.000 abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 6
- 239000011574 phosphorus Substances 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 239000010865 sewage Substances 0.000 description 7
- 239000000701 coagulant Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- 239000002352 surface water Substances 0.000 description 4
- 238000010992 reflux Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 241000108664 Nitrobacteria Species 0.000 description 2
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 238000005842 biochemical reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006396 nitration reaction Methods 0.000 description 2
- 231100000989 no adverse effect Toxicity 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical group [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model discloses a kind of biochemical treatment apparatus for realizing high CO_2 density, the processing unit include be sequentially communicated anoxic pond, oxygen compatibility pool, Aerobic Pond, mixed reaction pond, sedimentation basin, Aerobic Pond is connected with anoxic pond by mixed-liquor return pipe, sedimentation basin is connected with anoxic pond by mud return line, and chemical agent dosing system is connected on mixed reaction pond.Processing unit of the present utility model need to only set mixed reaction pond between Aerobic Pond and sedimentation basin, and chemical agent aid in treatment is combined in mixed reaction pond, realizes high CO_2 density, and apparatus structure is simple, has saved construction investment.Processing unit of the present utility model can realize chemical auxiliary dephosphorization, while realize high CO_2 density again, can reach higher levels of total phosphorus and total nitrogen removal effect, and effectively removes other pollutants.
Description
Technical field
The utility model belongs to the technical field of sewage-treatment plant, and in particular to one kind realizes high CO_2 density
Biochemical treatment apparatus.
Background technology
High CO_2 density is under conditions of high activity sludge concentration, low dissolved oxygen so that is filled in biochemical reaction
Micro organism quantity in putting greatly, flora become privileged, degraded it is efficient, pollutant can efficiently be degraded.
High CO_2 density, flow is simple, is easy to manage, high CO_2 density operational excellence condition
Under, effluent index is more excellent, charcoal absorption, ozone oxidation can be not required to compared with other techniques as the raw water of regeneration water factory
The technique of contour cost carries out advanced treating.The treatment effect of high CO_2 density is significantly better than general activated sludge process,
The effect of effect and the other pollutants of removal with fabulous removal total nitrogen, suitable for advanced treatment of wastewater.
Biochemical sludge processing system, is typically made up of biochemistry pool and sedimentation basin, and activated sludge is utilized in biochemistry pool
Pollutant is removed, mud-water separation is realized in sedimentation basin, the water outlet after being handled.
But the high-concentration activated sludge of stable maintenance biochemical treatment system is difficult, because with activated sludge
Concentration raises, and sludge settling property can significantly reduce, and influence the mud-water separation in sedimentation basin.Realize that stable maintenance biochemical system is high
The method of concentration activated sludge is a lot, but certain advantage and disadvantage be present, such as：
(1) biomembrance process is, it is necessary to which the high membrane module of price, water resistance make it that greatly operating cost is high, and aeration quantity is very
Cause that organic carbon loss is big greatly, be unfavorable for denitrogenation；
(2) heavy loading material is added, such as silt or iron powder, the shortcomings that overcoming biomembrance process, but need to throw
Add and/or reclaimer, troublesome in poeration and increase cost；
(3) efficient sedimentation tank is used, the shortcomings that overcoming biomembrance process and load material, but the amplitude improved is present necessarily
Limitation.
Assistant chemical dephosphorization, the strict demand of water outlet total phosphorus can be reached, such as the quasi- IV levels discharge standard (0.3mg/ of region
L), Environmental Quality of Earth Surface Water IV levels standard (0.3mg/L) or Environmental Quality of Earth Surface Water III level standard (0.2mg/L).But need
The structures such as mixed reaction pond and sedimentation basin are set after biochemical treatment, assistant chemical dephosphorization, are typically disposed in after biochemical treatment.
Utility model content
Insufficient problem, the utility model existing for the approach of high CO_2 density are realized for solution is of the prior art
Purpose be to provide a kind of biochemical treatment apparatus for realizing high CO_2 density.
To reach above-mentioned purpose, the utility model provides a kind of biochemical treatment dress for realizing high CO_2 density
Put, the processing unit include be sequentially communicated anoxic pond, oxygen compatibility pool, Aerobic Pond, mixed reaction pond, sedimentation basin, Aerobic Pond with lack
Oxygen pond is connected by mixed-liquor return pipe, and sedimentation basin is connected with anoxic pond by mud return line, connectionization on mixed reaction pond
Learn adding of agent system.
Biochemical sludge processing unit of the prior art is that sedimentation basin is set after biochemistry pool, chemical auxiliary dephosphorization
The structures such as mixed reaction pond and sedimentation basin are set usually after biochemical treatment apparatus.The utility model be in biochemistry pool and
Mixed reaction pond is set between sedimentation basin, resulting chemical sludge, to biochemical treatment and had no adverse effect.The utility model
Only mixed reaction pond need to be set, using the sedimentation basin of biochemical sludge processing unit, be not required to separately build sedimentation basin, saved engineering
Investment.
Further, mixed reaction pond is made up of flocculation basin and effluent trough, and flocculation basin includes the first flocculation laterally set
Pond, the second flocculation basin, the 3rd flocculation basin, the 4th flocculation basin, the first flocculation basin connect with the delivery port of Aerobic Pond, the first flocculation
Pond, the second flocculation basin, the 3rd flocculation basin, the 4th flocculation basin, effluent trough are sequentially communicated by hole, and effluent trough and sedimentation basin enter
The mouth of a river is connected, and chemical agent dosing system is arranged on above the first flocculation basin.The water intake mode of first flocculation basin is upper entering and lower leaving,
The water intake mode of second flocculation basin is bottom in and top out, and the water intake mode of the 3rd flocculation basin is upper entering and lower leaving, and the 4th flocculation basin enters
Water mode is bottom in and top out.
Wherein, the first flocculation basin, the second flocculation basin, the 3rd flocculation basin, be equipped with agitator in the 4th flocculation basin, each pond
Agitator is mutually connected, and the diameter of each pond agitator successively decreases successively.
In the technical solution of the utility model, the first flocculation basin, the second flocculation basin, the 3rd flocculation basin, the 4th flocculation basin are horizontal
To setting, mixed liquor passes through four flocculation basins successively, and by the sedimentation basin of the 4th flocculation basin entrance to the end.Due to each
The width of individual flocculation basin is less than the width of sedimentation basin, in order that water inlet is uniform, sets effluent trough, effluent trough is played into water buffering
Effect.Agitator in each flocculation basin is is connected, and each pond stirrer diameter diameter successively decreases successively, to control its pulpboard
Edge linear velocity, the rotating speed of each pond agitator successively decreases successively.
Further, oxygen compatibility pool in Aerobic Pond with being provided with multiple microporous aeration discs.
Further, chain type mud scraper and perforated sludge discharge pipe, perforated sludge discharge pipe and mud return line are provided with sedimentation basin
Connection.
The beneficial effects of the utility model are：
(1) biochemical treatment apparatus of the present utility model need to only set mixed reaction pond between Aerobic Pond and sedimentation basin,
Chemical agent aid in treatment is combined in mixed reaction pond, realizes high CO_2 density, and apparatus structure is simple, saves
Construction investment.
(2) biochemical treatment of the present utility model can realize chemical auxiliary dephosphorization, while realize high-concentration activated sludge again
Method, higher levels of total phosphorus and total nitrogen removal effect can be reached, and relatively effectively remove other pollutants, can answered extensively
For the smelly water body treating of all urban blacks, city sewage deep treatment or similar Industrial Wastewater Treatment.
Brief description of the drawings
Fig. 1 is the longitudinal cutting structure schematic diagram of the utility model biochemical treatment apparatus；
Fig. 2 is the top view of the utility model biochemical treatment apparatus；
Fig. 3 is the process chart of the utility model biochemical treatment apparatus；
In figure：
1st, anoxic pond；2nd, oxygen compatibility pool；3rd, Aerobic Pond；4th, mixed reaction pond；5th, sedimentation basin；6th, flocculation basin；61st, the first flocculation
Pond；62nd, the second flocculation basin；63rd, the 3rd flocculation basin；64th, the 4th flocculation basin；7th, effluent trough；8th, mixed-liquor return pipe；9th, sludge returns
Flow tube；10th, chemical agent dosing system；11st, agitator；12nd, microporous aeration disc.
Embodiment
The utility model is done below by Figure of description and is further described in detail.
As shown in accompanying drawing 1,2, a kind of biochemical treatment apparatus for realizing high CO_2 density of the present utility model, at this
Reason device includes anoxic pond 1, oxygen compatibility pool 2, Aerobic Pond 3, mixed reaction pond 4, sedimentation basin 5, Aerobic Pond 3 and the anoxic being sequentially communicated
Pond is connected by mixed-liquor return pipe 8, and sedimentation basin 5 is connected with anoxic pond 1 by mud return line 9, is connected on mixed reaction pond 4
Chemical agent dosing system 10.
Anoxic pond 1 of the present utility model, oxygen compatibility pool 2, Aerobic Pond 3, mixed reaction pond 4, sedimentation basin 5 are connected successively by hole
Logical, anoxic pond 1 is intake, and then passes sequentially through oxygen compatibility pool 2, Aerobic Pond 3, mixed reaction pond 4, sedimentation basin 5, remaining clear water discharge.
The biochemistry pool of the technical program includes anoxic pond 1, oxygen compatibility pool 2, Aerobic Pond 3, micro- life in anoxic pond 1, oxygen compatibility pool 2, Aerobic Pond 3
Thing is degraded to the pollutant in sewage.Set the mixing for combining chemical aid in treatment anti-between Aerobic Pond 3 and sedimentation basin 5
Answer pond 4, connected on mixed reaction pond 4 chemical agent dosing system 10 (chemical agent dosing system 10 include chemical agent storage tank,
Water pump and control valve), pollutant is removed using the chemical agent added, resulting chemical sludge, biochemical treatment is had no
Adverse effect.Mixed liquor in Aerobic Pond 3 is back in anoxic pond 1 by mixed-liquor return pipe 8, and the activity in sedimentation basin 5 is dirty
Mud is back in anoxic pond 1 by the connection of mud return line 9, so that the activated sludge of anoxic pond 1 maintains high concentration state.
Further, mixed reaction pond 4 is made up of flocculation basin 6 and effluent trough 7, and flocculation basin 6 includes first laterally set
Flocculation basin 61, the second flocculation basin 62, the 3rd flocculation basin 63, the 4th flocculation basin 64, the delivery port of the first flocculation basin 61 and Aerobic Pond 3
Connection, the first flocculation basin 61, the second flocculation basin 62, the 3rd flocculation basin 63, the 4th flocculation basin 64, effluent trough 7 are sequentially communicated, water outlet
Groove 7 connects with the water inlet of sedimentation basin 5.The water intake mode of first flocculation basin 61 is upper entering and lower leaving, the water inlet of the second flocculation basin 62
Mode is bottom in and top out, and the water intake mode of the 3rd flocculation basin 63 is upper entering and lower leaving, and the water intake mode of the 4th flocculation basin 64 enters under being
On go out, the water inlet of sedimentation basin 5 is arranged on lower end, so set be less prone to short stream.
Wherein, the first flocculation basin 61, the second flocculation basin 62, the 3rd flocculation basin 63, be equipped with stirring in the 4th flocculation basin 64
Device 11, the agitator 11 in each pond is mutually connected, and the diameter of each pond agitator 11 successively decreases successively.
In the technical solution of the utility model, flocculation basin 6 is located at the upstream of mixed reaction pond 4, is divided into four parts, along device
Laterally arrange, mixed liquor flows successively through.Effluent trough 7 is located at the downstream of mixed reaction pond 4, and bottom connects the water inlet of sedimentation basin 5.For
Make uniform into water, effluent trough 7 is set, and mixed liquor is entered in sedimentation basin 5 by effluent trough 7.Agitator in each flocculation basin
11, linkage, each diameter of pond agitator 11 presses 5,4,3,2 ratio-dependent, successively decreases successively, to control the edge linear speed of its pulpboard
Degree.
In the technical solution of the utility model, oxygen compatibility pool 2 in Aerobic Pond 3 with being provided with multiple microporous aeration discs 12.This
In utility model one embodiment, oxygen compatibility pool 2 each 25, is aerated with being provided with Φ 176mm microporous aeration discs in Aerobic Pond 3
Disk spacing is all 0.5 meter in length and breadth.Air is dispersed into bubble by the microporous aeration disc 12 of the utility model selection, is diffused into mixed liquor
In, the oxygen in bubble is dissolved into mixed liquor, there is provided the desired dissolved oxygen of microbial biochemical reaction, while ensure filling for sewage
Divide mixing, activated sludge is in suspended state, by the abundant contact of mud, water, gas three-phase, ensure that activated sludge makes full use of
Dissolved oxygen in water carrys out decomposing pollutant.
In the technical solution of the utility model, suspended stirrer is provided with anoxic pond 1, pulpboard is stretched into pond, so that
The mixed liquor that sewage, Aerobic Pond 3 flow back that must intake is well mixed with the sludge that sedimentation basin 5 flows back.Anoxic pond 1 is arranged to two lattice,
Intake in the upper end of the first lattice anoxic pond, lower end water outlet is entered in the second lattice anoxic pond, then is intake by the delivery port of upper end
Into oxygen compatibility pool 2, short stream is so less prone to.Mixed-liquor return pump is installed in Aerobic Pond 3, installed on mixed-liquor return pipe 8
Electromagnetic flowmeter, to measure.Valve is installed on mixed-liquor return pipe 8, to overhaul.
In the technical solution of the utility model, chain type mud scraper and perforated sludge discharge pipe are provided with sedimentation basin 5, spoil disposal of perforating
Pipe is connected with mud return line 9.Perforated sludge discharge pipe is arranged on the top bottom of pond of sedimentation basin 5, and for collecting sludge, perforated sludge discharge pipe connects
Connect mud return line 9.Sludge reflux pump is additionally provided with sedimentation basin 5, it is installed on mud return line 9, on mud return line 9
With valve, electromagnetic flowmeter is also installed on mud return line 9, to measure.
Biochemical treatment apparatus of the present utility model can be installed concentratedly in 1EEE containers, easy to remove.Pond body is placed in
In container, whole corollary equipments and pipe arrangement are easy to be embedded to underground within pond body.Control device, administration apparatus, walk
Road, staircase are separately outside container.Equal anti-corrosion inside and outside container, package unit can be embedded in underground, to reduce floor space.
As shown in Figure 3, the processing work of high CO_2 density is realized using biochemical treatment apparatus of the present utility model
Skill, specifically include following steps：
(1) the sludge formation mixed liquor that the mixed liquor that sewage, Aerobic Pond 3 flow back of intaking flows back with sedimentation basin 5, in anoxic pond
Denitrification processing is carried out in 1；
(2) mixed liquor after step (1) processing synchronizes nitrification and denitrification processing in oxygen compatibility pool 2；
(3) mixed liquor after step (2) processing carries out nitrification processing in Aerobic Pond 3, then by part mixed-liquor return
Into anoxic pond 1；
(4) in mixed reaction pond 4, flocculant and coagulant are added into the mixed liquor after step (3) processing
Learn auxiliary dephosphorization；
(5) mixed liquor after step (4) processing is after sedimentation basin carries out mud-water separation, clear water discharge, while will be partly dirty
Mud is back in anoxic pond 1.
Water inlet sewage and the backflow mixed liquor from Aerobic Pond 3, and the returned sludge from sedimentation basin 5, are mixed to form
Mixed liquor, successively by anoxic pond 1, oxygen compatibility pool 2 and Aerobic Pond 3.Denitrification processing, denitrifying bacteria are carried out in anoxic pond 1
Nitrate nitrogen in mixed liquor is converted into nitrogen discharge, nitration denitrification processing is synchronized in oxygen compatibility pool 2, will intake what is brought
Ammonia nitrogen is converted into nitrogen, and nitrification processing is carried out in Aerobic Pond 3, and the mineralized nitrogen that water inlet is brought is nitre by nitrobacteria
Nitrogen.Mixed liquor puts into chemical agent auxiliary dephosphorization in mixed reaction pond, carries out hybrid reaction, on the basis of biological phosphate-eliminating,
Further chemical dephosphorization, while improve the settling property of activated sludge.Mixed liquor finally enters sedimentation basin 5, carries out solid-liquid point
From the discharge of upper strata primary water, the sludge reflux of concentration is into the anoxic pond 1 of device front end.
Wherein, mixed reaction pond 4 is made up of flocculation basin 6 and effluent trough 7, and flocculation basin 6 includes the first flocculation laterally set
Pond 61, the second flocculation basin 62, the 3rd flocculation basin 63, the 4th flocculation basin 64.So, mixed liquor enters the first wadding by Aerobic Pond 3
In solidifying pond 61, chemical agent is added in the first flocculation basin 61, and mixed liquor flows successively through the first flocculation basin 61, the second flocculation basin
62nd, the 3rd flocculation basin 63, the 4th flocculation basin 64.Agitator 11 in each flocculation basin, linkage, each diameter of pond agitator 11 is successively
Successively decrease, to control the edge linear velocity of its pulpboard.Rotating speed in each flocculation basin successively decreases successively, and pulpboard outer rim speed is respectively
0.5m/s、0.4m/s、0.3m/s 0.2m/s.In the first flocculation basin 61, comparatively faster rotating speed is set so that chemical agent
Rapidly it is well mixed with mixed liquor, carries out flocculation reaction；In second flocculation basin 62, the 3rd flocculation basin 63, the 4th flocculation basin 64
The rotating speed of agitator successively decreases successively, is to prevent during the course of the reaction, the coagulation of formation is destroyed.
The activated sludge concentration MLSS that mixed liquor is formed in step (1) is controlled in more than 6g/L.The activated sludge of control is dense
Degree is higher so that the organic loading of mixed liquor is relatively small, has higher removal efficiency to contamination index.
The dissolved oxygen amount that mixed liquor is controlled in step (2) is 0.8-1.2mg/L, and the dissolved oxygen amount of mixed liquor is controlled in step (3)
For 2-2.5mg/L.Under conditions of dissolved oxygen 0.8-1.2mg/L, bacterium synchronizes nitrification using the pollutant in mixed liquor
Denitrification is handled, and in the presence of the synchronous nitration and denitrification in oxygen compatibility pool 2, can shorten the residence time and compared with low reflux ratio
Under conditions of, there is fabulous removal effect to nitrogen, and can efficiently remove total phosphorus and other pollutants.In the dissolved oxygen of Aerobic Pond 3
Measure as under conditions of 2-2.5mg/L so that the mineralized nitrogen in nitrobacteria mixed liquor is nitrate nitrogen, after by part mixed-liquor return
Into anoxic pond 1, circulation is formed, so as to which the nitrogen in pollutant be removed well.
Flocculant is polyacrylamide, and coagulant is one kind in aluminum sulfate, aluminium chloride, ferric trichloride.Flocculant
Dosage with coagulant is 50-100ppm.Flocculant is added in mixed reaction pond 4 and coagulant carries out chemistry auxiliary and removed
Phosphorus, the strict demand of water outlet total phosphorus can be reached, such as the quasi- IV levels discharge standard (0.3mg/L) of region, Environmental Quality of Earth Surface Water
IV levels standard (0.3mg/L) or Environmental Quality of Earth Surface Water III level standard (0.2mg/L).
Using the handling process of the utility model biochemical treatment apparatus while deep phosphorous removal is realized, chemistry can be utilized auxiliary
The chemical agent that dephosphorization adds is helped, significantly improves the Precipitation Potential of activated sludge, so as to the stable height for maintaining biochemical treatment apparatus
Concentration activated sludge, notable enhanced biological disposal ability, high total nitrogen can be reached in extremely short hydraulic detention time
Removal effect, simultaneously effective eliminate other pollutants.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (5)
1. a kind of biochemical treatment apparatus for realizing high CO_2 density, it is characterised in that the processing unit includes connecting successively
Logical anoxic pond (1), oxygen compatibility pool (2), Aerobic Pond (3), mixed reaction pond (4), sedimentation basin (5), Aerobic Pond passes through with anoxic pond
Mixed-liquor return pipe (8) is connected, and sedimentation basin is connected with anoxic pond by mud return line (9), and chemistry is connected on mixed reaction pond
Adding of agent system (10).
2. the biochemical treatment apparatus according to claim 1 for realizing high CO_2 density, it is characterised in that mixing is anti-
Ying Chi is made up of flocculation basin (6) and effluent trough (7), and flocculation basin includes the first flocculation basin (61), the second flocculation basin laterally set
(62), the 3rd flocculation basin (63), the 4th flocculation basin (64), the first flocculation basin connect with the delivery port of Aerobic Pond, the first flocculation basin,
Second flocculation basin, the 3rd flocculation basin, the 4th flocculation basin, effluent trough are sequentially communicated, and effluent trough connects with the water inlet of sedimentation basin, are changed
Adding of agent system is learned to be arranged on above the first flocculation basin.
3. the biochemical treatment apparatus according to claim 2 for realizing high CO_2 density, it is characterised in that the first wadding
Solidifying pond, the second flocculation basin, the 3rd flocculation basin, agitator (11) is equipped with the 4th flocculation basin, the agitator in each pond mutually links
Connection, and the diameter of each pond agitator successively decreases successively.
4. the biochemical treatment apparatus according to claim 1 for realizing high CO_2 density, it is characterised in that oxygen compatibility pool
With being provided with multiple microporous aeration discs (12) in Aerobic Pond.
5. the biochemical treatment apparatus according to claim 1 for realizing high CO_2 density, it is characterised in that sedimentation basin
Bottom is provided with perforated sludge discharge pipe, and perforated sludge discharge pipe is connected with mud return line.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129119A (en) * | 2017-07-14 | 2017-09-05 | 周敉 | A kind of biochemical treatment apparatus and technique for realizing high CO_2 density |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129119A (en) * | 2017-07-14 | 2017-09-05 | 周敉 | A kind of biochemical treatment apparatus and technique for realizing high CO_2 density |
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