CN103922474B - A kind of folded plate type oxidation ditch and sewage water treatment method thereof - Google Patents
A kind of folded plate type oxidation ditch and sewage water treatment method thereof Download PDFInfo
- Publication number
- CN103922474B CN103922474B CN201410174167.XA CN201410174167A CN103922474B CN 103922474 B CN103922474 B CN 103922474B CN 201410174167 A CN201410174167 A CN 201410174167A CN 103922474 B CN103922474 B CN 103922474B
- Authority
- CN
- China
- Prior art keywords
- oxidation ditch
- blodisc
- lusaier
- ditch
- water
- 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.)
- Expired - Fee Related
Links
Abstract
The invention discloses a kind of folded plate type oxidation ditch and sewage water treatment method thereof, belong to environmental engineering technical field of waste water processing.A kind of folded plate type oxidation ditch, comprise Ka Lusaier oxidation ditch, surperficial mechanical aerator, described Ka Lusaier oxidation ditch also comprises some upper flaps perpendicular to water (flow) direction setting in Ka Lusaier oxidation ditch and lower flap portion, described upper flap is fixed on the upper surface of described Ka Lusaier oxidation ditch, described lower flap portion is fixed on the inner bottom surface of described Ka Lusaier oxidation ditch, described upper flap and the contour and interval of lower flap portion are arranged, are provided with blodisc between adjacent two blocks upper flaps.The present invention can reduce the floor space of oxidation ditch greatly, effectively improves processing efficiency, dynamic efficiency, reduces mechanical energy consumption, sludge output and sludge bulking phenomenon, and compact construction, economical and practical, flexible operation, simple to operate, easy to maintenance.
Description
Technical field
The invention belongs to environmental engineering technical field of waste water processing, specifically a kind of folded plate type oxidation ditch and sewage water treatment method thereof.
Background technology
In sewage treatment process, activated sludge process is the most ripe, the topmost sewage water treatment method of current biological sewage treatment.Oxidation ditch process is that a kind of sewage is done cyclic motion in the trench, carried out a kind of activated sludge process of aeration by aeration rotary brush or rotating disk.Compare conventional activated sludge treatment system, have that effluent quality is good, capacity of resisting impact load is strong, dephosphorization removing nitric efficiency is high, mud is easily stablized, be convenient to the advantages such as Automated condtrol.But, in the operational process of reality, still there is a series of problem:
(1) when the carbohydrate in waste water is more, N, P content is uneven, and pH value is on the low side, and in oxidation ditch, sludge loading is too high, and dissolved oxygen concentration is not enough, and spoil disposal does not freely wait and easily causes the sludge bulking of thread fungus property;
(2) due to restriction and the ditch type aspect of ditch depth, the floor space of oxidation ditch process is large compared with other activated sludge process.Round Sump integrated oxidation ditch eliminates second pond, reduces floor space, but treatment effect is not fine;
(3) dynamic efficiency is lower, and mechanical energy consumption is higher.
Blodisc is also known as submerged bio-filter, and it is made up of many plastic discs (disc) be immersed in a tank (oxidation trough) arranged in parallel.Be used widely in sanitary sewage disposal, municipal sewage treatment and Organic Industrial Wastewater Treatment, compare activated sludge process, its biophase classification, every grade of rotating disk grows the microorganism being adapted to flow into this grade of sewage character; Contact reacts groove does not need aeration, and therefore power consumption is low; But it also has its shortcoming: dish material is more expensive, investment is large, therefore from the viewpoint of cost, it is only applicable to the wastewater treatment of little water yield lower concentration; It is without ventilation installation again, and the oxygen supply of rotating disk can only rely on the biofilm contact air of card.
Application number: 200810112926.4, publication number 101591088, discloses a kind of jet-pipe pre-aeration oxidation ditch sewage treatment system.It comprises the grid, water collecting settling pond and the oxidation ditch that connect successively, Venturi meter is provided with between described water collecting settling pond and oxidation ditch, the convergent portion import of described Venturi meter connects the top of described water collecting settling pond by high-pressure pump, throat connects air by inlet pipe, the bottom of the described oxidation ditch of flaring portion outlet access.The front end of described oxidation ditch is ballow, the depth of water is 2-2.5 times of other regions of oxidation ditch, some parallel traverse baffles are provided with in oxidation ditch, be the parallel irrigation canals and ditches that some head and the tail connect by compartition in ditch, in the parallel irrigation canals and ditches that these head and the tail connect, interval arranges some aeration rotary brushs, forms the conversion successively of aerobic zone and oxygen-starved area thus, mainly be oxidized and nitration reaction in aerobic zone, be mainly hydrolyzed and anti-nitration reaction in oxygen-starved area.The aeration of this invention is effective, and is provided with the ballow of efficient oxidation, can eliminate organic contamination, and has certain denitrification dephosphorization function, is mainly adapted to sanitary sewage and other similar organic sewages.Its weak point is: (1) described aerating apparatus quantity is too much, and running cost is high; (2) anoxic and anaerobic environment is provided by means of only ballow, the limited efficiency of organic pollutant removal and denitrogenation dephosphorizing; (3) flap of described oxidation ditch is run-in index, compares the vertical type in this patent, and under the condition of identical current flow process, its floor space is larger.
Application number: CN200620010843.0, publication number 200978246, discloses a kind of wall-breaking oxidation ditch, as Fig. 4.This oxidation ditch comprises ditch body, aerator and several disconnected walls, ditch body is provided with water-in and water outlet, aerator is arranged in ditch body, disconnected wall separately be fixed on ditch body inwall, disconnected wall is made up of body of wall and stopping composition, stopping composition is arranged in body of wall, and body of wall is hollow, and surperficial both sides are provided with some apertures.The obstruct of disconnected wall can make water (flow) direction repeatedly change, and makes straight water route originally become tortuous, is conducive to the degraded of microorganism to dye thing.The existence of hollow disconnected wall inner stuffing, adds biomass, can improve sewage treatment capacity, the ditch body volume reached needed for same treatment level can be made to reduce, reduce floor space.Owing to improving flow condition, this patented technology can make flow rate of water flow stablize, and waterpower is evenly distributed, and have structure simple, convenient management, is convenient to the advantages such as large-scale application.Its weak point is: (1) hollow disconnected wall inner stuffing is gravel, easily runs off, and is unfavorable for forming stable microbial film, and run off gravel be not easy to be separated with after mud mixing; (2) hollow disconnected portion within the walls, the mud in the microbial film come off and oxidation ditch all can deposit at this, and hollow disconnected wall is fixed again, therefore very large problem can be brought to cleaning, or causing the problems such as oxidation ditch stoppage in transit, the equipment that can have a strong impact on runs, and increases operation and management expense; (3) flap of oxidation ditch is run-in index, compares the vertical type in this patent, and under the condition of identical current flow process, its floor space is larger, and initial cost is higher; (4) oxidation ditch adopts single-stage blodisc as aerator away from surface aerator end, and aeration rate is very limited, easily produces sludge bulking at the low-oxygen area away from surface aerator; (5) the non-hydro powered of blodisc, can increase working cost.
Summary of the invention
1. the technical problem that will solve
The available depth existed for oxidation ditch of the prior art is little, and floor space is large, and the problems such as mud easily expands, and phosphor-removing effect is poor, and dynamic efficiency is lower, difficult in maintenance, the invention provides a kind of folded plate type oxidation ditch and sewage water treatment method thereof.Adopt technical scheme of the present invention, greatly can reduce the floor space of oxidation ditch, effective raising processing efficiency, dynamic efficiency, reduce mechanical energy consumption, sludge output and sludge bulking phenomenon, and compact construction, economical and practical, flexible operation, simple to operate, easy to maintenance.
2. technical scheme
A kind of folded plate type oxidation ditch, comprise Ka Lusaier (Carrousel) oxidation ditch, surperficial mechanical aerator, described Ka Lusaier oxidation ditch also comprises some upper flaps perpendicular to water (flow) direction setting in Ka Lusaier oxidation ditch and lower flap portion, described upper flap is fixed on the upper surface of described Ka Lusaier oxidation ditch, described lower flap portion is fixed on the inner bottom surface of described Ka Lusaier oxidation ditch, described upper flap and the contour and interval of lower flap portion are arranged, are provided with blodisc between adjacent two blocks upper flaps.By current flow driving drive plate, drive plate drives blodisc to rotate.
Preferably, described Ka Lusaier oxidation ditch is annular irrigation canals and ditches shape, is four or six gallerys; Along the uniform upper flap 3 of water (flow) direction or 4 in each gallery, lower flap portion 4 or 5, blodisc is connected by rotating shaft, and two ends are fixed on the body of wall of Ka Lusaier oxidation ditch; Blodisc center disc is drive plate.
Preferably, described blodisc has three grades, is followed successively by one-level blodisc, two stage biological rotating disk and three grades of blodiscs along water (flow) direction.
Preferably, the ditch depth (significant depth of oxidation ditch) of described Ka Lusaier oxidation ditch is 6-10m, flow rate of water flow >=0.3m/s; The height of upper and lower flap is 2/3 ditch depth.
Preferably, the disc of described blodisc is circular, surface is ripple radially, material is low foamed polystyrene, and disc diameter is between 3.6-6.0m, and the adjacent disc spacing of one-level blodisc is 30-40mm, the adjacent disc spacing of two stage biological rotating disk is 20-30mm, the adjacent disc spacing of three grades of blodiscs is 10-20mm, is immersed in 40% of the disk height >=disc diameter in sewage, and the rotating speed of blodisc is 0.5-1.5r/min.
Preferably, be provided with V-type storage bucket between two pieces of adjacent lower flap portions, each storage bucket is all connected with shore pipe.
The sewage water treatment method of the folded plate type oxidation ditch described in employing, the steps include:
A. dispose of sewage and enter oxidation ditch by water inlet pipe, form circulation impellent by the mechanical aerator aeration in surface;
B. vertically flapper gap of disposing of sewage does vertical direction flowing, and along oxidation ditch gallery horizontal flow, partially disposed waste water is to the slip teeth on drive plate, and drive plate drives blodisc to rotate;
C. dispose of sewage in oxidation ditch internal circulation flow, periodically by oxygen-rich area and oxygen-starved area, obtain denitrification effect by nitrification and denitrification, BOD is degraded;
D., after the residence time of 48-72h, spoil disposal is carried out by storage bucket and shore pipe doubling board space.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with existing known technology, there is following unusual effect:
(1) a kind of folded plate type oxidation ditch of the present invention, the uniform upper and lower flap of gallery spaces, adds the flowing of sewage in the vertical direction, on the basis not changing current flow process, add the available depth of oxidation ditch, shorten gallery length, greatly reduce floor space;
(2) a kind of folded plate type oxidation ditch of the present invention, blodisc is driven by current, is not increasing on the basis of power consumption, is improve dynamic efficiency; Again owing to there is blodisc, suitably can reduce aeration rate, thus mechanical energy consumption and working cost can be reduced;
(3) a kind of folded plate type oxidation ditch of the present invention, gallery overlaps blodisc along Cheng Junbu 2-3, and near the oxygen-rich area of aerator, blodisc depends on aeration effectively can improve processing efficiency; Away from the low-oxygen area of aerator, though dissolved oxygen concentration is lower, through the effect of I and II blodisc and oxidation ditch, sludge loading is relatively low, and is provided with the regular spoil disposal of V-type storage bucket between lower flap portion, can effectively reduce sludge bulking phenomenon;
(4) a kind of folded plate type oxidation ditch of the present invention, ditch depth is 6-10 rice, oxygen-starved area can be formed preferably at the outer shroud of oxidation ditch, the alternate environment of Aerobic-anaerobic-anoxic is formed in gallery, build the envrionment conditions of stable biological carbon and phosphorous removal, and the diameter of blodisc larger (3.6-6.0 rice), can form the microbial film that surface-area is larger, both can effectively improve nitric efficiency and water treatment efficiency;
(5) a kind of folded plate type oxidation ditch of the present invention, compact construction, economical and practical, be applicable to, to the transformation of existing conventional oxidation ditch technique, not increase Controlling System and power-equipment, thus simple to operate, flexible operation, easy to maintenance.
Accompanying drawing explanation
Fig. 1 is the vertical view of a kind of folded plate type oxidation ditch of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the structural representation of blodisc of the present invention;
Fig. 4 is the structural representation of oxidation ditch of the prior art.
In figure: 1, Ka Lusaier oxidation ditch; 2, lower flap portion; 3, upper flap; 4, three grades of blodiscs; 5, two stage biological rotating disk; 6, one-level blodisc; 7, bucket is store; 8, surperficial mechanical aerator; 9, water inlet pipe; 10, rising pipe; 11, drive plate; 12, shore pipe; 13, disc; 14, water outlet equalizing tank; 15, body of wall.
Embodiment
Below in conjunction with Figure of description and specific embodiment, the present invention is described in detail.
As Fig. 1,2, a kind of folded plate type oxidation ditch, comprise Ka Lusaier oxidation ditch 1, surperficial mechanical aerator 8, upper flap 3 is fixed on the upper surface of Ka Lusaier oxidation ditch 1, lower flap portion 2 is fixed on the inner bottom surface of Ka Lusaier oxidation ditch 1, upper flap 3 and the contour and interval of lower flap portion 2 are arranged, are provided with blodisc between adjacent two blocks upper flaps 3.By current flowing Contact Transmission dish 11, drive plate 11 drives blodisc.Blodisc has three grades, is followed successively by one-level blodisc 6, two stage biological rotating disk 5 and three grades of blodiscs 4 along water (flow) direction.
This Ka Lusaier oxidation ditch 1 is annular irrigation canals and ditches shape, is four or six gallerys; Along the uniform upper flap 3 of water (flow) direction or 4 in each gallery, lower flap portion 4 or 5, blodisc is connected by rotating shaft, and two ends are fixed on the body of wall 15 of Ka Lusaier oxidation ditch 1; Blodisc center disc is drive plate 11.The ditch depth (significant depth of oxidation ditch) of Ka Lusaier oxidation ditch 1 is 6-10m, flow rate of water flow >=0.3m/s; The height of upper and lower flap is 2/3 ditch depth.The benefit of such design is, is conducive to the formation of anoxic and anaerobic zone in oxidation ditch, and the waterpower of blodisc drives, and the formation of stabilate film on blodisc.As Fig. 3, the disc 13 of blodisc is circular, and surface is ripple radially, and material is low foamed polystyrene, this type disc formed biomass large, microbial film difficult drop-off; Disc diameter is between 3.6-6.0m, and the rotating speed of blodisc is 0.5-1.5r/min, is immersed in 40% of the disk height >=disc diameter in sewage, so mainly in order to ensure dissolved oxygen content required in sewage.The adjacent disc spacing of one-level blodisc 6 is 30-40mm, the adjacent disc spacing of two stage biological rotating disk 5 is 20-30mm, the adjacent disc spacing of three grades of blodiscs 4 is 10-20mm, can ensure that blodisc at different levels can form stable and efficient microbial film under corresponding condition of water quality like this.
As Fig. 1,2, be provided with V-type storage bucket 7 between two pieces of lower flap portions 2, be all connected with shore pipe 12.
Adopt the sewage water treatment method of above-mentioned folded plate type oxidation ditch, the steps include:
A. dispose of sewage and enter oxidation ditch by water inlet pipe 9, form circulation impellent by surperficial mechanical aerator 8 aeration.
B. vertically flapper gap of disposing of sewage does vertical direction flowing, and along oxidation ditch gallery horizontal flow, partially disposed waste water, to the slip teeth on drive plate 11, drives blodisc to rotate.After 48h runs continuously, rotating disk adheres to one deck and perches the microbial film of a large amount of microorganism, microorganism kind composition assembly is stablized, and the organic pollutant in sewage is microbial film institute absorption degradation.Dial rotation can periodically leave water surface ingress of air, and the set water layer on microbial film absorbs oxygen and is delivered in microbial film and sewage from air.
C. dispose of sewage in oxidation ditch internal circulation flow, periodically by oxygen-rich area and oxygen-starved area, obtain denitrification effect by nitrification and denitrification, BOD is degraded.Water outlet enters water outlet equalizing tank 14, is flowed out by rising pipe 10.
D., after the residence time of 48-72h, spoil disposal is carried out by storage bucket 7 and shore pipe 12 doubling board space.
Embodiment 1
The present embodiment 1, based on the folded plate type oxidation ditch in above-mentioned embodiment, carries out wastewater treatment.Certain municipal effluent, water quality is CODc
r: 450-550mg/L, BOD
5: 250-300mg/L, NH3-N:35-42mg/L, TP:6-8mg/L.
Oxidation ditch 1 is six gallerys, the wide 2m of gallery, and ditch depth is 7m, and available depth is 6.5m, long 20m.Flow rate of water flow is 0.3m/s, and hydraulic detention time is 24h; The uniform upper flap of each gallery is 3, and lower flap portion is 4, and upper and lower flap interval is arranged, contour 4m.Blodisc is three grades, and disc diameter is 3.6m, and the dish spacing of one-level blodisc 6 is 30mm, the dish spacing of two stage biological rotating disk 5 is 20mm, the dish spacing of three grades of blodiscs 4 is 10mm, and the disc 13 be immersed in sewage is 1.5m, and the velocity of rotation of rotating disk is 1.3r/min.Water outlet CODc after oxidation ditch process
r: 30-40mg/L, BOD
5: 15-20mg/L, NH3-N:5-10mg/L, TP:0.2-0.4mg/L.Reach with reaching stable effluent quality " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) to stable effluent quality.
Embodiment 2
The present embodiment 2, based on the folded plate type oxidation ditch in above-mentioned embodiment, carries out wastewater treatment.Certain Effluent, water quality is CODc
r: 1850-2050mg/L, BOD
5: 600-720mg/L, SS:250-330mg/L, pH:8.8-9.0m.
Oxidation ditch 1 is six gallerys, the wide 2m of gallery, and ditch depth is 8m, and available depth is 7.5m, long 20m.Flow rate of water flow is 0.3m/s, and hydraulic detention time is 24h; The uniform upper flap 3 of each gallery is 3, and lower flap portion 2 is 4, and upper and lower flap interval is arranged, contour 5m.Blodisc is three grades, and disc diameter is 6.0m, and the dish spacing of one-level blodisc 6 is 40mm, the dish spacing of two stage biological rotating disk 5 is 30mm, the dish spacing of three grades of blodiscs 4 is 20mm, and the disc 13 be immersed in sewage is 2.4m, and the velocity of rotation of rotating disk is 1.5r/min.Water outlet CODc after oxidation ditch process
r: 300-350mg/L, BOD
5: 40-50mg/L, SS:50-70mg/L.Reach to stable effluent quality " pulp and paper industry pollution discharge standard " (GB3544-2008).
Claims (5)
1. a folded plate type oxidation ditch, comprise Ka Lusaier oxidation ditch (1), surface mechanical aerator (8), it is characterized in that, described Ka Lusaier oxidation ditch (1) also comprises some upper flaps (3) perpendicular to the setting of Ka Lusaier oxidation ditch (1) interior water (flow) direction and lower flap portion (2), described upper flap (3) is fixed on the upper surface of described Ka Lusaier oxidation ditch (1), described lower flap portion (2) is fixed on the inner bottom surface of described Ka Lusaier oxidation ditch (1), described upper flap (3) and the contour and interval of lower flap portion (2) are arranged, blodisc is provided with between adjacent two blocks upper flaps (3),
Wherein, described Ka Lusaier oxidation ditch (1) is annular irrigation canals and ditches shape, is four or six gallerys; Along the uniform upper flap (3) 3 or 4 of water (flow) direction in each gallery, lower flap portion (2) 4 or 5, blodisc is connected by rotating shaft, and two ends are fixed on the body of wall (15) of Ka Lusaier oxidation ditch (1); Blodisc center disc is drive plate (11);
The ditch depth of described Ka Lusaier oxidation ditch (1) is 6-10m, flow rate of water flow >=0.3m/s; The height of upper and lower flap is 2/3 ditch depth.
2. a kind of folded plate type oxidation ditch according to claim 1, it is characterized in that, described blodisc has three grades, is followed successively by one-level blodisc (6), two stage biological rotating disk (5) and three grades of blodiscs (4) along water (flow) direction.
3. a kind of folded plate type oxidation ditch according to claim 2, it is characterized in that, the disc (13) of described blodisc is circular, surface is ripple radially, material is low foamed polystyrene, disc diameter is between 3.6-6.0m, adjacent disc (13) spacing of one-level blodisc (6) is 30-40mm, adjacent disc (13) spacing of two stage biological rotating disk (5) is 20-30mm, adjacent disc (13) spacing of three grades of blodiscs (4) is 10-20mm, be immersed in disc (13) in sewage highly >=disc (13) diameter 40%, the rotating speed of blodisc is 0.5-1.5r/min.
4. a kind of folded plate type oxidation ditch according to claim 3, is characterized in that, be provided with V-type storage bucket (7) between two pieces of adjacent lower flap portions (2), each storage bucket (7) is all connected with shore pipe (12).
5. adopt the sewage water treatment method of folded plate type oxidation ditch according to claim 4, the steps include:
A. dispose of sewage and enter oxidation ditch by water inlet pipe (9), form circulation impellent by surperficial mechanical aerator (8) aeration;
B. vertically flapper gap of disposing of sewage does vertical direction flowing, and along oxidation ditch gallery horizontal flow, partially disposed waste water is to the slip teeth on drive plate (11), and drive plate (11) drives blodisc to rotate;
C. dispose of sewage in oxidation ditch internal circulation flow, periodically by oxygen-rich area and oxygen-starved area, obtain denitrification effect by nitrification and denitrification, BOD is degraded;
D., after the residence time of 48-72h, spoil disposal is carried out by storage bucket (7) and shore pipe (12) doubling board space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174167.XA CN103922474B (en) | 2014-04-25 | 2014-04-25 | A kind of folded plate type oxidation ditch and sewage water treatment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174167.XA CN103922474B (en) | 2014-04-25 | 2014-04-25 | A kind of folded plate type oxidation ditch and sewage water treatment method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103922474A CN103922474A (en) | 2014-07-16 |
| CN103922474B true CN103922474B (en) | 2015-11-11 |
Family
ID=51140908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410174167.XA Expired - Fee Related CN103922474B (en) | 2014-04-25 | 2014-04-25 | A kind of folded plate type oxidation ditch and sewage water treatment method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103922474B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817164B (en) * | 2015-05-13 | 2017-06-16 | 上海天之冠可再生能源有限公司 | New bio disc reactor |
| CN105293824B (en) * | 2015-10-27 | 2017-07-14 | 沈阳建筑大学 | A kind of disk type multistage composite biological cleaning integrated technique |
| CN107129116B (en) * | 2017-07-03 | 2023-09-19 | 南京天河水环境科技有限公司 | Floating type comprehensive water treatment equipment and water treatment method using same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4460471A (en) * | 1977-11-04 | 1984-07-17 | Reid John H | Flow-control process for an oxidation ditch |
| CN2530948Y (en) * | 2002-01-04 | 2003-01-15 | 淳安千岛湖环境发展公司有限公司 | Powerless sewage treatment device |
| CN200978246Y (en) * | 2006-10-17 | 2007-11-21 | 山东大学 | Breaking wall oxidation ditch |
| CN201012909Y (en) * | 2007-02-28 | 2008-01-30 | 江昌富 | Plug-flow type aeration machine rotor disc |
| CN102134124A (en) * | 2011-04-24 | 2011-07-27 | 江苏一环集团有限公司 | Integrated oxidation ditch |
| CN203781909U (en) * | 2014-04-25 | 2014-08-20 | 环境保护部南京环境科学研究所 | Hipped plate oxidation ditch |
-
2014
- 2014-04-25 CN CN201410174167.XA patent/CN103922474B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4460471A (en) * | 1977-11-04 | 1984-07-17 | Reid John H | Flow-control process for an oxidation ditch |
| CN2530948Y (en) * | 2002-01-04 | 2003-01-15 | 淳安千岛湖环境发展公司有限公司 | Powerless sewage treatment device |
| CN200978246Y (en) * | 2006-10-17 | 2007-11-21 | 山东大学 | Breaking wall oxidation ditch |
| CN201012909Y (en) * | 2007-02-28 | 2008-01-30 | 江昌富 | Plug-flow type aeration machine rotor disc |
| CN102134124A (en) * | 2011-04-24 | 2011-07-27 | 江苏一环集团有限公司 | Integrated oxidation ditch |
| CN203781909U (en) * | 2014-04-25 | 2014-08-20 | 环境保护部南京环境科学研究所 | Hipped plate oxidation ditch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103922474A (en) | 2014-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101935134B (en) | Biological rotating disk sewage treatment equipment | |
| CN201952322U (en) | Anaerobic micropore aeration oxidation ditch reactor | |
| CN109650645B (en) | Integrated rural domestic sewage treatment equipment and sewage treatment method | |
| CN106746385B (en) | Device and method for treating urban sewage by plug-flow type vertical three-cycle process | |
| CN105712472B (en) | Combined drop-driven biological rotating disc reactor | |
| CN103922474B (en) | A kind of folded plate type oxidation ditch and sewage water treatment method thereof | |
| CN113666487A (en) | Suspended rotary disk aerator for small river channel and treatment method thereof | |
| CN101570380A (en) | Combined sewage treatment device | |
| CN107055781B (en) | Device and method for treating urban sewage by vertical internal and external three-circulation continuous flow process | |
| CN103864215B (en) | A kind of Sewage treatment systems | |
| CN206512076U (en) | Integral biological rotating disk sewage disposal device | |
| CN206156858U (en) | Rotating biological disk improves device suitable for sewage treatment plant | |
| CN210340465U (en) | Novel SBR reaction tank | |
| CN203781909U (en) | Hipped plate oxidation ditch | |
| CN107265759A (en) | The sewage disposal device and handling process of integration | |
| CN2806445Y (en) | Aeration tank for sewage treatment | |
| CN216336825U (en) | Floated dish aeration machine is used in small-size river course | |
| CN115010242A (en) | Sewage digestion treatment device and method thereof | |
| CN101224920A (en) | Planetary rotating brush | |
| CN205011552U (en) | Paper making wastewater treatment system | |
| CN210528571U (en) | Biological contact oxidation process equipment using nano aeration technology | |
| CN110182950B (en) | Horizontal integrated oxidation ditch tank | |
| CN210656354U (en) | Horizontal integrated A/O oxidation ditch tank | |
| CN1278955C (en) | Composite bacterial enzyme stepped sewage purification device | |
| CN205151994U (en) | Sewage treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 |