CN204569652U - The hydrolysis of upflowing precipitation and two-stage AO biochemical treatment system - Google Patents
The hydrolysis of upflowing precipitation and two-stage AO biochemical treatment system Download PDFInfo
- Publication number
- CN204569652U CN204569652U CN201520135259.7U CN201520135259U CN204569652U CN 204569652 U CN204569652 U CN 204569652U CN 201520135259 U CN201520135259 U CN 201520135259U CN 204569652 U CN204569652 U CN 204569652U
- Authority
- CN
- China
- Prior art keywords
- precipitation
- upflowing
- hydrolytic tank
- lattice
- hydrolysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model proposes the hydrolysis of a kind of upflowing precipitation and two-stage AO biochemical treatment system, comprise upflowing precipitation hydrolytic tank, anoxia cell, aerobic lattice, transition lattice, described upflowing precipitation hydrolytic tank connects anoxia cell by rising pipe, the center of upflowing precipitation hydrolytic tank arranges guide shell, insertion opening water inlet pipe upwards in guide shell, guide shell lower end connects reflector; The center of described upflowing precipitation hydrolytic tank arranges post-type mixer, and the rotation axis of post-type mixer is through guide shell and reflector, and the agitating vane of post-type mixer is positioned at below reflector; Be provided with the slope at tendency center, pond bottom described upflowing precipitation hydrolytic tank, form bucket; Be connected with sand washer by suction pipe bottom bucket, sand washer is connected described water inlet pipe by fermentation liquor backflow pipe with pump.The upflowing precipitation hydrolytic tank pond shape sludge bucket that the utility model proposes is dark, and deposit mud layer thick, can ensure that high concentration sludge at the bottom of pond carries out fermentation hydrolysis, produce a large amount of VFA, reinforced anaerobic releases the effect of phosphorus.
Description
Technical field
The utility model relates to a kind of two-stage AO technique strengthening precipitating hydrolysis, belongs to technical field of sewage.
Background technology
Current country, to Sewage Plant emission standard increasingly stringent, proposes the requirement of denitrogenation dephosphorizing, but has demand to carbon source due to denitrifying bacteria and polyP bacteria, therefore for low-carbon-source sewage, is difficult to realize denitrogenation and dephosphorization efficiently.And the organism having most of BOD, COD to be non-solubility or not easily to degrade in the carbon source of sewage own, not easily by polyP bacteria and denitrifying bacteria utilize, for improving the utilizability of Sewage Plant carbon source, many Sewage Plant add hydrolytic tank, larger molecular organics can be converted into small organic molecule.But turn increase simultaneously and take up an area and investment.
For the municipal sewage plant of many confluence of rainwater and sewage systems, containing a large amount of inorganic particle in water inlet, these inorganic particles enter biochemical reaction tank, can cause deposition.And pre-treatment precipitation is the effective measure of the removal SS that many Sewage Plant adopt, but because lower many organic granulars can be precipitated in this pond, cause the loss of carbon source, reduce the efficiency of biochemical treatment, therefore all pre-treatment settling tank can be surmounted when current many Sewage Plant are run, directly enter subsequent biochemical process structures, this pond vacant, also result in the waste of investment.
Sewage work runs off for avoiding carbon source, often surmounts pre-treatment settling tank, can not solve the problem of Sewage Plant water-inlet carbon source deficiency like this.And a large amount of particulate matter can be made to enter biochemical reaction tank, occur that many large particulate matters are deposited in biochemical reaction tank, cause reaction volume to reduce, aerating apparatus oxygen transfer efficiency reduces, and affects the efficiency of biochemical reaction.For avoiding large particulate matter to precipitate in biochemical reaction tank, anaerobism, the power of hypoxia response pond stirrer, the aeration rate in increase aerobic reaction pond need be strengthened, which adds operation energy consumption.
Carbon source organism contained in municipal effluent has very major part to be insoluble organism or hardly degraded organic substance, can not by polyP bacteria and denitrifying bacteria utilize.Especially polyP bacteria is very high for the requirement of carbon source, and it only has absorption VFA, could produce and release phosphorus reaction, and in aerobic reaction pond excessive suction phosphorus, reach dephosphorization object.Because precipitation has a large amount of organic granular in mud in pre-treatment settling tank, be wherein richly stored with carbon source, if just arranged by this partial sludge, increases sludge system processing costs on the one hand outward, waste again this part carbon source on the one hand.Therefore this partial sludge should be carried out anaerobically fermenting hydrolysis, high concentration sludge hydrolysed ferment is made to produce VFA (low-molecular-weight fatty acid), and inorganic particle is drained in this precipitation hydrolytic tank, avoids it to enter biochemical reaction tank deposition, affect biochemical reaction effect.
And in traditional AAO technique (as Fig. 1), anaerobic zone, oxygen-starved area are set, and by external reflux sludge reflux to anaerobic zone, owing to carrying much nitrate in returned sluge, can not anaerobic phosphorus release well, affect phosphor-removing effect.And often volume is inadequate in oxygen-starved area, cause anoxic denitrification to react thorough, final Nitrogen/Phosphorus Removal is also bad.How to develop the carbon source in sewage, improving denitrogenation and the phosphor-removing effect of sewage, is a current important subject.
Utility model content
For the weak point that this area exists, the purpose of this utility model proposes the hydrolysis of a kind of upflowing precipitation and two-stage AO biochemical treatment system.Oxygen-starved area volume in biochemical reaction tank is increased, improves denitrifying capacity, increase transition section by the middle part of aerobic zone, be set to oxygen-starved area as required, strengthen denitrification effect.High concentration microorganism can produce a large amount of VFA, make polyP bacteria release phosphorus efficiency very high, pre-treatment settling tank precipitating sludge therefore should be made to concentrate, keep thicker sludge fermentation layer, and the most applicable precipitation, the pond shape of thicker sludge blanket can be kept, be upflowing precipitation hydrolytic tank.
The technical scheme realizing the utility model object is:
The hydrolysis of a kind of upflowing precipitation and two-stage AO biochemical treatment system, comprise upflowing precipitation hydrolytic tank, anoxia cell, the first aerobic lattice, transition lattice, the second aerobic lattice, described upflowing precipitation hydrolytic tank connects anoxia cell by rising pipe 19, described anoxia cell, the first aerobic lattice, transition lattice, the second aerobic lattice are arranged in turn, separate mutually with partition wall;
The center of described upflowing precipitation hydrolytic tank arranges guide shell, insertion opening water inlet pipe upwards in guide shell, and guide shell lower end connects reflector; The center of described upflowing precipitation hydrolytic tank arranges post-type mixer, and the rotation axis of post-type mixer is through guide shell and reflector, and the agitating vane of post-type mixer is positioned at below reflector;
Be provided with the slope at tendency center, pond bottom described upflowing precipitation hydrolytic tank, form bucket, the angle of slope and horizontal plane is 50-60 °; Be connected with sand washer by suction pipe bottom bucket, sand washer is connected described water inlet pipe 1 by fermentation liquor backflow pipe 24 with pump 22.
In described system, the second aerobic lattice are connected with second pond.The setting being set to routine in prior art of second pond.Described upflowing precipitation hydrolytic tank shape can be circular or square.
Wherein, the water side of described water inlet pipe is hydraucone shape; Described guide shell hypomere expands gradually.It is conventional design that guide shell hypomere expands gradually, and object is that flow velocity is diminished, and suitably reduces the impact to reflector.Reflector and guide shell lower end distance are 0.3 ~ 0.5m.
Wherein, described post-type mixer is frequency conversion speed regulating vertical stirrer.
Wherein, in the position of suction pipe at the bottom of described upflowing precipitation hydrolytic tank and pond, the difference of altitude of liquid level is 1.5 ~ 2.5m.Based on this design, by the effect of liquid level pressure difference, base sludge is discharged outside pond, rinsed out by organic fermented liquid of efficient sand washer by grit surface, and this partially liq is back to precipitation hydrolytic tank by recycle pump, and disposal can be transported outward through the gravel that overscan is washed, no longer enter follow-up sludge treating system, reduce sludge treatment energy consumption.
The water inlet pipe designed in the present invention enters in central draft tube with hydraucone form, and afterwards to dirty, central draft tube end opening is for gradually wealthy mouth and be provided with reflector, current are through baffle reflection, to top, pond stream, collect clear water by top water leg, then flow out precipitation hydrolytic tank.Macrobead mud then enters the sludge bucket of reflector bottom, and the gradient of sludge bucket is 50-60 °, can ensure that heavy mud puts under in bucket, and without the need to arranging mud scraper.
The hydrolysis effect key of precipitation hydrolytic tank depends on the thickness of base sludge layer, therefore, is provided with mud level meter in described upflowing precipitation hydrolytic tank.When mensuration mud layer thickness is greater than 1m, start spoil disposal.By the effect of liquid level pressure difference, base sludge is discharged outside pond, rinsed out by organic fermented liquid of efficient sand washer by grit surface, and this partially liq is back to precipitation hydrolytic tank by recycle pump, and disposal can be transported outward through the gravel that overscan is washed, no longer enter follow-up sludge treating system, reduce sludge treatment energy consumption.
Further, described first aerobic lattice are provided with aeration head, are provided with stirrer and aeration head in described transition lattice; Aeration head is provided with in described second aerobic lattice.
Apply the method that upflowing precipitation is hydrolyzed and two-stage AO biochemical treatment system is disposed of sewage that the utility model proposes:
Sewage enters upflowing precipitation hydrolytic tank, mixes with the reflux external reflux mud in so far pond of second pond; The external reflux mud and the water inlet ratio that enter this pond are 0-20%, the external reflux mud of all the other 80-100% enters anoxia cell, the sewage being mixed with mud enters the first aerobic lattice after anoxia cell, carries out organic removal, the aerobic nitrification of ammonia nitrogen and the aerobic absorption of phosphorus.Hypoxia response or aerobic reaction is carried out at transition lattice; Enter the second aerobic lattice again.
Arrange stirrer and aeration head in transition lattice, aeration valve cuts out or opens, and makes it be in anoxic section or aerobic section, is namely used as anoxia cell or aerobic lattice.
Further, the post-type mixer 3 hours stirring at low speed in described upflowing precipitation hydrolytic tank, 0.5 hour high-speed stirring, promotes that water inlet fully contacts with VFA (voltaile fatty acid) material that bottom fermentation liquid in pond produces, strengthens the ability of anaerobic phosphorus release.。Wherein the power density of frequency conversion during stirring at low speed is 2W/m
3, the power density of frequency conversion during high-speed stirring is 4W/m
3.
Aerobic Pond water outlet enters second pond.
Stirrer and aeration head are set in transition lattice, as water outlet ammonia nitrogen <1mg/L, TN>13mg/L, illustrate that the anoxic denitrification time inadequate, by aeration valve closes in transition lattice, start stirrer, carry out anoxic denitrification reaction; Illustrate that as water outlet ammonia nitrogen >5mg/L nitrification effect is poor, in these lattice, aeration head starts aeration, and stirrer is out of service, carries out nitration reaction.
The beneficial effects of the utility model are:
1, precipitate the inorganic particles such as the precipitable lower gravel of hydrolytic tank, avoid entering biochemical reaction tank, hold in order to avoid deposition reduces pond, affect biochemical reaction effect.Or deposit in reaction tank for avoiding, increase the energy consumption of reaction tank stirrer and aeration.Also the loss to aeration head can be avoided.
2, upflowing precipitation hydrolytic tank pond of the present utility model shape sludge bucket is dark, and deposit mud layer thick, can ensure that high concentration sludge at the bottom of pond carries out fermentation hydrolysis, produce a large amount of VFA, reinforced anaerobic releases the effect of phosphorus.
3, arrange two external reflux sludge reflux points, most of sludge reflux, to anoxic pond, only has small part sludge reflux to precipitate hydrolytic tank, can reduce the impact of returned sluge nitrate on anaerobic hydrolysis.
4, precipitate hydrolytic tank and produce a large amount of VFA, enter oxygen-starved area, the Utilization ability of denitrifying bacteria to carbon source can be improved, improve denitrification denitrogenation effect.
6, in Aerobic Pond, transition section is set, makes it can form two-stage AO technique as required, improve denitrification effect, flexible operation.
7, upflowing precipitation hydrolytic tank current of the present utility model flow from bottom to top in pond, and the VFA that can produce with submerged fermentation liquid fully contacts, and promotes to release phosphorus.
8, by utilizing the hydrolysis of precipitation hydrolytic tank bed mud, settling tank, hydrolytic tank, anaerobic pond are combined together, technical process is simple, and structures quantity is few, occupation of land of reducing investment outlay.
9, sludge from sedimentation tank carries out washed-out sand process, and fermented liquid is returned in precipitation hydrolytic tank again, reduces sludge treatment load on the one hand.On the other hand, refuse is made full use of, meet energy-conserving and environment-protective theory.
10, be suitable for raw waste water factory to transform, because precipitation hydrolytic tank has anaerobic phosphorus release effect, therefore all can change former for pre-treatment AAO biochemistry pool front portion into oxygen-starved area, expand hypoxia response volume, improve denitrogenation and phosphor-removing effect.
Accompanying drawing explanation
Fig. 1 is the AAO biochemical processing process schema of prior art.
Fig. 2 is the system biochemical processing process schema that the utility model proposes.
Fig. 3 is be the upflowing precipitation hydrolytic tank structure iron that the utility model proposes,
In figure, 1 is water inlet pipe, and 2 is pre-treatment settling tanks, 3 is hydrolytic tanks, and 4 is anaerobic cells, and 5 is anoxia cells, 6 is the aerobic lattice of 1#, and 7 is second ponds, and 8 is external reflux sludge pipes, 9 is internal reflux mixed solution pipes, and 10 is upflowing precipitation hydrolytic tanks, and 11 is transition lattice, 12 is the aerobic lattice of 2#, and 13 is bottom bucket, and 14 is water-inlet horn mouths, 15 is central draft tubes, 16 is reflectors, and 17 is frequency-conversion agitators, and 18 is effluent troughs, 19 is rising pipes, 20 is suction pipes, and 21 is sand washers, and 22 is fermentation liquor backflow pumps, 23 is body refuse pipes, and 24 is fermentation liquor backflow pipes.25 is bucket slopes.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
Embodiment 1:
See Fig. 2, the hydrolysis of a kind of upflowing precipitation and two-stage AO biochemical treatment system, sewage enters native system by water inlet pipe 1, comprise upflowing precipitation hydrolytic tank 10, anoxia cell 5, the aerobic lattice of 1# 6, transition lattice 11, the aerobic lattice 12 of 2#, upflowing precipitation hydrolytic tank 10 connects anoxia cell 5 by rising pipe 19, the aerobic lattice of 1#, transition lattice, the aerobic lattice of 2# are arranged in turn, separate with partition wall mutually, the aerobic lattice of 2# connect second pond 7.
See Fig. 3, the center of upflowing precipitation hydrolytic tank 10 arranges central draft tube 15, insertion opening water inlet pipe 1 upwards in guide shell, and guide shell lower end connects reflector 16, and reflector and guide shell lower end distance are 0.35m; The center of upflowing precipitation hydrolytic tank 10 arranges vertical frequency-conversion agitator 17, and the rotation axis of stirrer is through guide shell and reflector 16, and the agitating vane of stirrer is positioned at below reflector, enters in bucket.Wherein, the water side of described water inlet pipe is water-inlet horn mouth 14; The hypomere of central draft tube 15 expands gradually.Mud level meter is provided with in upflowing precipitation hydrolytic tank.
Be provided with the slope at tendency center, pond bottom upflowing precipitation hydrolytic tank, form bucket, bucket slope 25 is 60 ° with the angle of horizontal plane; Be connected with sand washer 21 by suction pipe 20 bottom bucket, sand washer 21 is connected water inlet pipe 1 by fermentation liquor backflow pipe 24 with fermentation liquor backflow pump 22.Sand washer can adopt conventional hydraulic centrifugal sand washer, and bottom is connected with body refuse pipe 23.
Wherein, the position (bottom bucket 13) of suction pipe at the bottom of upflowing precipitation hydrolytic tank is 2m with the difference of altitude of liquid level in pond.
In native system, the aerobic lattice of 1# are provided with aeration head, are provided with stirrer and aeration head in transition lattice 11; Aeration head is provided with in the aerobic lattice of 2#.
The system of application the present embodiment is disposed of sewage: flow is 20000m
3/ day, the water quality of sewage is BOD
5≤ 90mg/L; CODcr≤200mg/L; SS≤140mg/L; TN≤40mg/L;
NH
3-N≤30mg/L；TP≤4mg/L。
Sewage enters upflowing precipitation hydrolytic tank, mixes with the reflux external reflux mud in so far pond of second pond; This pond water outlet muddy water mixed solution enters anoxia cell, and in this oxygen-starved area, carry out anti-nitration reaction together with the nitrate carried in the end mixed solution of aerobic zone and the second pond external reflux mud of coming that refluxes, then enter the aerobic lattice of 1#, carry out organic removal, the aerobic nitrification of ammonia nitrogen and the aerobic absorption of phosphorus.Hypoxia response or aerobic reaction is carried out at transition lattice; The water outlet of 2# Aerobic Pond enters second pond.The pipeline of second pond returned sluge is provided with two external reflux sludge reflux points, and 85% sludge reflux is to anoxic pond, and the supreme flow type sedimentation hydrolytic tank of 15% sludge reflux, can reduce the impact of returned sluge nitrate on anaerobic hydrolysis.When the thickness of mensuration mud layer is 1m in precipitation hydrolytic tank, start spoil disposal.By the effect of liquid level pressure difference, base sludge is discharged outside pond, rinsed out by organic fermented liquid of efficient sand washer by grit surface, and this partially liq is back to precipitation hydrolytic tank by recycle pump.
Post-type mixer 3 hours stirring at low speed in upflowing precipitation hydrolytic tank 10,0.5 hour high-speed stirring wherein stirring at low speed time frequency conversion power density be 2W/m
3, the power density of frequency conversion during high-speed stirring is 4W/m
3.
Stirrer and aeration head are set in transition lattice, as water outlet ammonia nitrogen <1mg/L, TN>13mg/L, illustrate that the anoxic denitrification time inadequate, by aeration valve closes in transition lattice, start stirrer, carry out anoxic denitrification reaction; Illustrate that as water outlet ammonia nitrogen >5mg/L nitrification effect is poor, in these lattice, aeration head starts aeration, and stirrer is out of service, carries out nitration reaction.
Final outflow water water quality is:
BOD
5≤9mg/L；CODcr≤40mg/L；SS≤8mg/L；TN≤13mg/L；NH
3-N≤0.5mg/L；
TP≤0.5mg/L。
Water outlet can reach country's " urban wastewater treatment firm pollutant emission standard " one-level A standard.
Above embodiment is only for illustration of the utility model; and be not limitation of the utility model; the those of ordinary skill of relevant technical field; when not departing from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (6)
1. upflowing precipitation hydrolysis and two-stage AO biochemical treatment system, it is characterized in that, comprise upflowing precipitation hydrolytic tank, anoxia cell, the first aerobic lattice, transition lattice, the second aerobic lattice, described upflowing precipitation hydrolytic tank connects anoxia cell by rising pipe, described anoxia cell, the first aerobic lattice, transition lattice, the second aerobic lattice are arranged in turn, separate mutually with partition wall;
The center of described upflowing precipitation hydrolytic tank arranges guide shell, insertion opening water inlet pipe upwards in guide shell, and guide shell lower end connects reflector; The center of described upflowing precipitation hydrolytic tank arranges post-type mixer, and the rotation axis of post-type mixer is through guide shell and reflector, and the agitating vane of post-type mixer is positioned at below reflector;
Be provided with the slope at tendency center, pond bottom described upflowing precipitation hydrolytic tank, form bucket, the angle of slope and horizontal plane is 50-60 °; Be connected with sand washer by suction pipe bottom bucket, sand washer is connected described water inlet pipe by fermentation liquor backflow pipe with pump.
2. upflowing precipitation according to claim 1 hydrolysis and two-stage AO biochemical treatment system, it is characterized in that, the water side of described water inlet pipe is hydraucone shape; Described guide shell hypomere expands gradually, and reflector and guide shell lower end distance are 0.3 ~ 0.5m.
3. upflowing precipitation according to claim 1 hydrolysis and two-stage AO biochemical treatment system, it is characterized in that, described post-type mixer is frequency conversion speed regulating vertical stirrer.
4. the hydrolysis of upflowing according to claim 1 precipitation and two-stage AO biochemical treatment system, is characterized in that, in the position of suction pipe at the bottom of described upflowing precipitation hydrolytic tank and pond, the difference of altitude of liquid level is 1.5 ~ 2.5m.
5. upflowing precipitation according to claim 1 hydrolysis and two-stage AO biochemical treatment system, is characterized in that, is provided with mud level meter in described upflowing precipitation hydrolytic tank.
6., according to Claims 1 to 5 arbitrary described upflowing precipitation hydrolysis and two-stage AO biochemical treatment system, it is characterized in that, described first aerobic lattice are provided with aeration head, are provided with stirrer and aeration head in described transition lattice; Aeration head is provided with in described second aerobic lattice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520135259.7U CN204569652U (en) | 2015-03-10 | 2015-03-10 | The hydrolysis of upflowing precipitation and two-stage AO biochemical treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520135259.7U CN204569652U (en) | 2015-03-10 | 2015-03-10 | The hydrolysis of upflowing precipitation and two-stage AO biochemical treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204569652U true CN204569652U (en) | 2015-08-19 |
Family
ID=53862322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520135259.7U Active CN204569652U (en) | 2015-03-10 | 2015-03-10 | The hydrolysis of upflowing precipitation and two-stage AO biochemical treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204569652U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743743A (en) * | 2015-03-10 | 2015-07-01 | 浦华环保有限公司 | Upward flowing type deposition-hydrolyzing and two-stage AO biochemical treatment system and application thereof |
| CN105417871A (en) * | 2015-12-11 | 2016-03-23 | 广西南宁绿泽环保科技有限公司 | Spiral-flow type integrated sewage treatment device provided with center return pipe |
| CN110606568A (en) * | 2019-11-06 | 2019-12-24 | 众意环保科技(大连)有限公司 | Integrated A with embedded precipitation structure2/O biochemical tower |
-
2015
- 2015-03-10 CN CN201520135259.7U patent/CN204569652U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743743A (en) * | 2015-03-10 | 2015-07-01 | 浦华环保有限公司 | Upward flowing type deposition-hydrolyzing and two-stage AO biochemical treatment system and application thereof |
| CN104743743B (en) * | 2015-03-10 | 2016-09-07 | 浦华环保有限公司 | Up flow type precipitates hydrolysis and two-stage AO biochemical treatment system and application thereof |
| CN105417871A (en) * | 2015-12-11 | 2016-03-23 | 广西南宁绿泽环保科技有限公司 | Spiral-flow type integrated sewage treatment device provided with center return pipe |
| CN110606568A (en) * | 2019-11-06 | 2019-12-24 | 众意环保科技(大连)有限公司 | Integrated A with embedded precipitation structure2/O biochemical tower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104118971B (en) | A kind of method utilizing Sewage Plant mixing sludge hydrolysed ferment intensified denitrification and dephosphorization | |
| WO2020119217A1 (en) | Anaerobic ammoxidation synergistic nitrogen removal process device of municipal sewage main and side streams and application method thereof | |
| CN105585122B (en) | A kind of high-ammonia nitrogen low C/N is than waste water treatment system and treatment process | |
| CN103936229B (en) | A kind of municipal sewage improvement A2/ O intensified denitrification and dephosphorization processes device and technique | |
| CN105461061A (en) | A<2>/O-biology synchronous nitrogen and phosphorus removal device and method for urban sewage | |
| CN102153239A (en) | Process and system for carrying out high-efficiency denitrification and dephosphorization treatment on urban sewage | |
| CN102161554A (en) | Anaerobic hydrolysis-acidification and anoxic-aerobic process-sequencing batch reactor (AO-SBR) integrated sewage treatment reaction tank | |
| CN104743743B (en) | Up flow type precipitates hydrolysis and two-stage AO biochemical treatment system and application thereof | |
| CN204569652U (en) | The hydrolysis of upflowing precipitation and two-stage AO biochemical treatment system | |
| CN112979055A (en) | UMIF synchronous nitrogen and phosphorus removal integrated tank for mixed liquid online fermentation and application method thereof | |
| CN105906052A (en) | Coupling anaerobic sludge acidogenesis mud-film two-phase composite A/A/O system and technology | |
| CN216155584U (en) | Micro-aerobic efficient household sewage treatment device | |
| CN205368023U (en) | Handle high concentration and synthesize municipal sewage's device | |
| CN107055781A (en) | The device and method of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage | |
| CN215161901U (en) | Mainstream UMIF (unified modeling and derived knowledge framework) process system for low-cost nitrogen and phosphorus removal of low-C/N (carbon/nitrogen) ratio sewage | |
| CN203545784U (en) | Combined type oxidation ditch with external sedimentation basin | |
| CN202046974U (en) | Highly efficient treatment system for denitrification and dephosphorization of urban sewage | |
| CN201999835U (en) | Anaerobic hydrolytic acidification and AO-SBR (anoxic/oxic-sequencing batch reactor activated sludge process) integrated sewage treatment reaction tank | |
| CN206654777U (en) | The device of vertical inside and outside four circulations continuous flow process Treating Municipal Sewage | |
| CN211999015U (en) | Improved UCT coupling biological rotating disc sewage treatment system for black and odorous water body | |
| CN113371836A (en) | Micro-aerobic efficient household sewage treatment device | |
| CN103626294B (en) | The high-efficiency composite hydrolysis device that a kind of anaerobism-oxygen of holding concurrently replaces and method for hydrolysis | |
| CN206654778U (en) | The device of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage | |
| CN206654773U (en) | The device of vertical internal-external double circulation continuous flow process Treating Municipal Sewage | |
| CN205151893U (en) | Sewage activity is heavy pond of hydrolysising just |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |