CN108726680A - A kind of domestic sewage treatment process - Google Patents
A kind of domestic sewage treatment process Download PDFInfo
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- CN108726680A CN108726680A CN201810643162.5A CN201810643162A CN108726680A CN 108726680 A CN108726680 A CN 108726680A CN 201810643162 A CN201810643162 A CN 201810643162A CN 108726680 A CN108726680 A CN 108726680A
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- zone
- aeration
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- treatment process
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Classifications
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
This application involves a kind of domestic sewage treatment process, belong to the biologic treating technique field of water, waste water or sewage.Including inhalant region, anaerobic zone, anoxic zone, aeration zone and exhalant region, the inhalant region is connected to anaerobic zone, anaerobic zone dissolved oxygen is less than 0.2mg/L, 0.5 mg/L of anoxic zone dissolved oxygen <, anaerobic zone, anoxic zone, aeration zone are sequentially arranged composition reaction zone, and exhalant region is connected to aeration zone, the aeration zone is made of multiple aeration units, multiple aeration heads are set in each aeration unit, and aeration head is mounted on aeration branch pipe, and passes through air branch pipe and air line；Part water is back to anoxic zone and realizes interior reflux by exhalant region, and internal reflux ratio 100-150%, the part that residue is disposed completely is then sent to sedimentation basin.The application is applied to the processing of sewage, especially sanitary sewage, has many advantages, such as that total nitrogen reduction is notable, elimination efficiency is high.
Description
Technical field
This application involves a kind of domestic sewage treatment process, belong to the biologic treating technique field of water, waste water or sewage.
Background technology
In water treatment procedure, sanitary sewage occupies very big ratio.Conventional sanitary sewage disposal is relatively simple, leads to
Frequently with " anaerobism+aeration tank+coagulating sedimentation+sodium hypochlorite or liquid chlorine disinfection " treatment process, principal degradation remove COD, BOD,
Based on the organic pollutions such as SS, coloration, therefore, in treated sewage, water outlet total nitrogen content is still higher, needs additionally to carry out
Additional treatments could meet emission request.
Invention content
For the drawbacks described above in the presence of existing sanitary sewage, a kind of total nitrogen of the application offer reduces notable, removing effect
The high domestic sewage treatment process of rate.
To achieve the above object, the technical solution that the application takes is as follows：
A kind of domestic sewage treatment process, including inhalant region, anaerobic zone, anoxic zone, aeration zone and exhalant region, the inhalant region with
Anaerobic zone is connected to, and anaerobic zone dissolved oxygen is less than 0.2mg/L, 0.5 mg/L of anoxic zone dissolved oxygen <, anaerobic zone, anoxic zone, aeration
Area is sequentially arranged composition reaction zone, and exhalant region is connected to aeration zone, and the aeration zone is made of multiple aeration units, each to expose
Multiple aeration heads are set in gas unit, and aeration head is mounted on aeration branch pipe, and passes through air branch pipe and air line；Water outlet
Part water is back to anoxic zone and realizes interior reflux by area, and internal reflux ratio 100-150%, the part that residue is disposed completely is then sent
To sedimentation basin.
Further, as preferred：
The inhalant region is connected with feed pipe and exteenal reflux pipe, respectively send the activated sludge of sewage and sedimentation basin precipitation separation
Enter inhalant region.Inhalant region is the entrance of entire treatment reactor, by the connection of feed pipe and cesspool etc., realizes separate sources
The supply of sanitary sewage；By the connection of exteenal reflux pipe and sedimentation basin, the supply with water activated sludge is realized, and can be according to processing
Demand, carry out classification processing.It is furthermore preferred that the exteenal reflux pipe realizes that the exteenal reflux of sludge, external reflux ratio 60-100% are dirty
The activated sludge of the exteenal reflux measure of water, sedimentation basin precipitation separation obtains reuse, and the sewage containing nitrate anion in exteenal reflux is able to
Anaerobic zone, anoxic zone carry out anti-nitration reaction, improve sewage treating efficiency.
The anaerobic zone and/or anoxic zone are both provided with blender, to realize the abundant progress of reaction, and accelerate to react into
Row.It is furthermore preferred that the blender opposite pool wall in corresponding region is obliquely installed.
The soil stack is vertically arranged along corresponding pool wall, is connected with water pipe between soil stack and aeration branch pipe, with
Realize the flushing to remaining sludge in aeration branch pipe.
Further include having in-depth processing pond, the in-depth processing pond is located at sedimentation basin rear, and by gallery one, gallery two, corridor
Road three, gallery four, gallery five and gallery six are constituted, and the gallery one, gallery two are nitrification region, and gallery three, gallery four are anti-
Nitrification region, gallery five, gallery six are aerated space, and the supernatant of sedimentation basin precipitation separation enters in-depth processing pond, and controls
Dissolved oxygen the < 0.3mg/L, residence time 5-6h of denitrification zone.It is furthermore preferred that the denitrification zone is provided with the works such as big impeller
For blender, the abundant progress reacted with realization.
The aeration zone is made of 24 aeration units, and each aeration unit is provided with 26 aeration heads.
The application is applied to sewage especially sanitary sewage disposal, reaction zone is broadly divided into anaerobism in entire processor
Area, anoxic zone and aeration zone and in-depth treatment region, inhalant region total nitrogen content in 45-55mg/L, ammonia-nitrogen content 35-45mg/L,
Exteenal reflux is constituted between sedimentation basin and inhalant region, exhalant region constitutes interior reflux with anoxic zone, the band dirt water warp that inhalant region enters
After structural response device processing, aeration zone water outlet total nitrogen is reduced to 11-14mg/L, ammonia nitrogen then to reduce at 8-12mg/L, in-depth
Water outlet total nitrogen in reason area is reduced to 3-6mg/L, ammonia nitrogen to be then reduced to 1mg/l or less.
Description of the drawings
Fig. 1 is the vertical view of the application；Fig. 2 is the structural schematic diagram of aeration zone in the application；
Fig. 3 is A-A sectional views in Fig. 1；Fig. 4 is aeration head scheme of installation in the application；
Fig. 5 is soil stack scheme of installation in the application；Fig. 6 is another structural schematic diagram of aeration zone in the application.
Figure label：1. inhalant region；11. feed pipe；12. exteenal reflux pipe；2. anaerobic zone；3. anoxic zone；4. aeration zone；
4a. aeration units；41. aeration head；42. aeration branch pipe；5. exhalant region；51. outlet pipe；6. air hose；61. air
Branch pipe；62. soil stack；63. water pipe；Return duct in 7.；71. dredge pump；72. flow back branch pipe；721. reflux branch
Pipe exports；8. blender；9. deepening processing pond；The aerated spaces 9a.；The denitrification zones 9b.；The nitrification regions 9c.；B. gallery
One；C. gallery two；D. gallery three；E. gallery four；F. gallery five；G. gallery six.
Specific implementation mode
A kind of domestic sewage treatment process of the present embodiment, in conjunction with Fig. 1-Fig. 3, including inhalant region 1, anaerobic zone 2, anoxic zone 3,
Aeration zone 4 and exhalant region 5, inhalant region 1 are connected to anaerobic zone 2, and 2 dissolved oxygen of anaerobic zone is less than 0.2mg/L, 3 dissolved oxygen of anoxic zone
0.5 mg/L of <, anaerobic zone 2, anoxic zone 3, aeration zone 4 are sequentially arranged composition reaction zone, and exhalant region 5 is connected to aeration zone 4, expose
Gas area 4 is made of multiple aeration unit 4a, and multiple aeration heads 41 are arranged in each aeration unit 4a, and aeration head 41, which is mounted on, to expose
It on gas branch pipe 42, and is connected to air hose 6 by air branch pipe 61, treated for anoxic zone 3 supernatant left arrow along Fig. 6
Direction is sent to aeration zone 4, and Air Exposure is completed in aeration zone 4；Outlet pipe 51 and interior return duct 7, interior reflux is arranged in exhalant region 5
Pipe 7 is connected to anoxic zone 3 by the branch pipe 72 that flows back, and reflux pump 71 is arranged on the branch pipe 72 that flows back, and will be returned in the sewage of exhalant region 5
Stream realizes that denitrification denitrogenation, internal reflux ratio 100-150%, outlet pipe 5 send the sewage in exhalant region 5 to sedimentation basin（In figure not
Display）Place.
To realize that more using effects, said program can also add as follows：
In conjunction with Fig. 1, inhalant region 1 is connected with feed pipe 11 and exteenal reflux pipe 12, and inhalant region 1 is the entrance of entire treatment reactor,
The sewage of cesspool etc. is inputted by feed pipe 11, the activated sludge after being detached sedimentation basin precipitation by exteenal reflux pipe 12
Exteenal reflux is carried out, external reflux ratio 60-100% precipitates isolated activated sludge and is able to reuse, contains nitrate anion in exteenal reflux
Sewage is able to carry out anti-nitration reaction in anaerobic zone, anoxic zone, improves sewage treating efficiency.
To realize that more using effects, said program can also add as follows：
In conjunction with Fig. 1, anaerobic zone 2 and anoxic zone 3 are both provided with blender 8, to realize the abundant progress of reaction, and accelerate to react into
Row.It is furthermore preferred that the opposite pool wall in corresponding region of blender 8 is obliquely installed, blender 8 carries out stirring at low speed in anoxic zone 3,
Anoxic zone dissolved oxygen < 0.3 mg/L, residence time 5-6h.
To realize that more using effects, said program can also add as follows：In conjunction with Fig. 2, aeration zone 4 by
24 aeration unit 4a are constituted, and each aeration unit 4a is provided with 26 aeration heads 41.
To realize that more using effects, said program can also add as follows：In conjunction with Fig. 1 and Fig. 5, draining
Standpipe 62 is vertically arranged along corresponding pool wall, is connected with water pipe 63 between soil stack 62 and aeration branch pipe 42, to realize to exposing
The flushing of sludge is remained in gas branch pipe 42.
The application is applied to sewage especially sanitary sewage disposal, reaction zone is broadly divided into anaerobic zone in entire processor
2, anoxic zone 3 and aeration zone 4,1 total nitrogen content of inhalant region is in 45-55mg/L, ammonia-nitrogen content 35-45mg/L, sedimentation basin and water inlet
Exteenal reflux is constituted between area 1, exhalant region 5 constitutes interior reflux with anoxic zone 3, and the band dirt water that inhalant region 1 enters is anti-through the structure
After answering device to handle, water outlet total nitrogen is reduced to 11-14mg/L, ammonia nitrogen then to reduce in 8-12mg/L.
To realize that more using effects, said program can also add as follows：
It in processing procedure, still has part ammonia nitrogen and fails to reduce, the present embodiment is also provided with in-depth processing at sedimentation basin rear
Pond 9 inputs the supernatant of sedimentation basin precipitation separation in in-depth processing pond 9 along arrow shown in Fig. 6, with in-depth drop nitrogen processing, tool
Body combination Fig. 6, one B of gallery, two C of gallery are nitrification region 9c, and enter two C of gallery in one B of gallery（Such as：One B of gallery in Fig. 6
At the down arrow of end）, two C of gallery enters at three D of gallery（Such as：In Fig. 6 at two C-terminal down arrow of gallery）Carbon is respectively set
Source adder carries out the addition of nutrient solution, to ensure that nitration reaction is smoothed out；Three D of gallery, four E of gallery are denitrification zone 9b,
In the 9b of the denitrification zone blender is used as equipped with big impeller etc.（It is not shown in figure）, five F of gallery, six G of gallery are aerated space 9a,
And dissolved oxygen < 0.3mg/L, the residence time 5-6h of denitrification zone 9b is controlled, setting blender carries out stirring at low speed, completes deep
Change drop nitrogen；After advanced treating, gallery six G water outlets, into secondary settling tank, the activity sludge reflux after sedimentation in secondary sedimentation tank separation is extremely deepened
The inhalant region for the treatment of region；Sewage is run in each corridor area in the direction of the arrow, can in-depth treatment region water outlet total nitrogen be reduced to 3-
6mg/L, ammonia nitrogen are then reduced to 1mg/l or less.
Claims (9)
1. a kind of domestic sewage treatment process, it is characterised in that：Including inhalant region, anaerobic zone, anoxic zone, aeration zone and water outlet
Area, the inhalant region are connected to anaerobic zone, and anaerobic zone dissolved oxygen is less than 0.2mg/L, 0.5 mg/L of anoxic zone dissolved oxygen <, anaerobism
Area, anoxic zone, aeration zone are sequentially arranged composition reaction zone, and exhalant region is connected to aeration zone, and the aeration zone is by multiple aerations
Unit is constituted, and multiple aeration heads are arranged in each aeration unit, and aeration head is mounted on aeration branch pipe, and by air branch pipe with
Air line；Part water is back to anoxic zone and realizes interior reflux, internal reflux ratio 100-150%, remaining processing completely by exhalant region
It then send to sedimentation basin the part finished.
2. a kind of domestic sewage treatment process as described in claim 1, it is characterised in that：The inhalant region is connected with feed pipe
With exteenal reflux pipe, the activated sludge for the treatment of sewage sludge and sedimentation basin precipitation separation is sent into respectively.
3. a kind of domestic sewage treatment process as claimed in claim 2, it is characterised in that：The exteenal reflux pipe constitutes activity
The exteenal reflux of sludge, external reflux ratio 60-100%.
4. a kind of domestic sewage treatment process as described in claim 1, it is characterised in that：The anaerobic zone and/or anoxic zone
It is both provided with blender.
5. a kind of domestic sewage treatment process as claimed in claim 4, it is characterised in that：The blender is in corresponding region
Opposite pool wall is obliquely installed.
6. a kind of domestic sewage treatment process as described in claim 1, it is characterised in that：The soil stack is along corresponding pool wall
It is vertically arranged, is connected with water pipe between soil stack and aeration branch pipe.
7. a kind of domestic sewage treatment process as claimed in any one of claims 1 to 6, it is characterised in that：The aeration zone is by 24
A aeration unit is constituted, and each aeration unit is provided with 26 aeration heads.
8. a kind of domestic sewage treatment process as claimed in claim 7, it is characterised in that：Further include having in-depth processing pond, it is deep
Change processing pond and be located at sedimentation basin rear, and is made of gallery one, gallery two, gallery three, gallery four, gallery five and gallery six, corridor
Road one, gallery two are nitrification region, and gallery three, gallery four are denitrification region, and gallery five, gallery six are aerated space, precipitation
Supernatant after the precipitation separation of pond enters in-depth processing pond, and controls dissolved oxygen the < 0.3mg/L, residence time 5- of denitrification zone
6h。
9. a kind of domestic sewage treatment process as claimed in claim 8, it is characterised in that：It is equipped with and stirs in the denitrification region
Mix device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643162.5A CN108726680A (en) | 2018-06-21 | 2018-06-21 | A kind of domestic sewage treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810643162.5A CN108726680A (en) | 2018-06-21 | 2018-06-21 | A kind of domestic sewage treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108726680A true CN108726680A (en) | 2018-11-02 |
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ID=63930236
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810643162.5A Pending CN108726680A (en) | 2018-06-21 | 2018-06-21 | A kind of domestic sewage treatment process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040053967A (en) * | 2002-12-16 | 2004-06-25 | 이.엠 주식회사 | Apparatus and method for disposing sewage with high accuracy |
| CN101767910A (en) * | 2010-01-07 | 2010-07-07 | 同济大学 | Continuous flow sewage hypoxia short distance denitrification treating technique |
| CN201756490U (en) * | 2010-07-30 | 2011-03-09 | 同济大学 | Continuous-flow sewage low-oxygen short-range denitrification treatment device |
| CN104016490A (en) * | 2014-06-23 | 2014-09-03 | 珠江水利委员会珠江水利科学研究院 | Multi-corridor scarfed filter wall bio-membrane sewage treatment apparatus and application thereof |
| CN108033561A (en) * | 2017-12-08 | 2018-05-15 | 绍兴水处理发展有限公司 | A kind of dyeing waste water denitrification process |
-
2018
- 2018-06-21 CN CN201810643162.5A patent/CN108726680A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040053967A (en) * | 2002-12-16 | 2004-06-25 | 이.엠 주식회사 | Apparatus and method for disposing sewage with high accuracy |
| CN101767910A (en) * | 2010-01-07 | 2010-07-07 | 同济大学 | Continuous flow sewage hypoxia short distance denitrification treating technique |
| CN201756490U (en) * | 2010-07-30 | 2011-03-09 | 同济大学 | Continuous-flow sewage low-oxygen short-range denitrification treatment device |
| CN104016490A (en) * | 2014-06-23 | 2014-09-03 | 珠江水利委员会珠江水利科学研究院 | Multi-corridor scarfed filter wall bio-membrane sewage treatment apparatus and application thereof |
| CN108033561A (en) * | 2017-12-08 | 2018-05-15 | 绍兴水处理发展有限公司 | A kind of dyeing waste water denitrification process |
Non-Patent Citations (1)
| Title |
|---|
| 赵志瑞: "京津冀再生水与海水淡化利用综合分析", 地质出版社, pages: 56 * |
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