CN101786727A - Moving-bed biofilm oxidation ditch - Google Patents
Moving-bed biofilm oxidation ditch Download PDFInfo
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- CN101786727A CN101786727A CN201019146003A CN201019146003A CN101786727A CN 101786727 A CN101786727 A CN 101786727A CN 201019146003 A CN201019146003 A CN 201019146003A CN 201019146003 A CN201019146003 A CN 201019146003A CN 101786727 A CN101786727 A CN 101786727A
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- oxidation ditch
- ditch
- moving
- bed biofilm
- screen cloth
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a moving-bed biofilm oxidation ditch, comprising a ditch body which is provided with a water inlet, a water outlet and a sludge discharge outlet, wherein the ditch body is internally provided with a guide wall and an aeration device, moving filler is filled in the ditch body, a water outlet screen mesh is arranged at the water outlet part, and a sludge discharge screen mesh is arranged at the sludge discharge outlet. The moving filler flows together with the sludge-water mixed liquid in the oxidation ditch so as to improve the sludge concentration in the oxidation ditch, thereby improving the processing efficiency of the oxidation ditch. The moving-bed biofilm oxidation ditch has the characteristics that the floor area of the oxidation ditch is less than that of the conventional oxidation ditch, the sludge concentration is obviously improved, the operating cost is lowered, the operation is simple and convenient, the effluent quality is stable, and the nitrogen and phosphorus removal effect is good.
Description
Technical field
The present invention relates to a kind of efficient moving-bed biofilm oxidation ditch (MBBR-OD) that is used for wastewater treatment, be applicable to the processing of trade effluent and sanitary sewage.
Background technology
Oxidation ditch (Oxidation Ditch) is current denitrogenation dephosphorizing a kind of equipment relatively more commonly used.It mainly is to use a kind of aeration and agitator with direction control to promote the mixed solution along continuous straight runs at closed channel internal recycle, its existing complete mixing reactor characteristic the plug-flow reactor characteristics are also arranged, so the oxidation ditch process flow process is simple, operational management is convenient, stable effluent quality.But there is the shortcoming that the denitrogenation dephosphorizing effect is limited, floor space is big in traditional oxidation ditch, and therefore many investigators improve oxidation ditch.Zanjon type gas-lift stream-pull circulation inversion A as Granted publication CN201254493Y
2O integral co-construction oxidation ditch, publication number are stereoscopic circulation integrated oxidation ditch sewage disposal device and the working method thereof of CN1376642A, and Granted publication number is the A of CN201010576Y
2/ O oxidation ditch synchronous nitration and denitrification control device, Granted publication number is the highly effective dephosphorizing denitrification improved oxidation ditch of CN2605252Y, Granted publication has also been obtained good effect number for the improvement oxidation channel wastewater treatment system of CN201325908Y all is that configuration, water intake mode and the flow pattern that addresses this problem from oxidation ditch improved oxidation ditch.But these improvement all are based on the improvement that oxidation ditch carries out as a kind of sp act mud technology, and oxidation ditch wants the improvement of making a breakthrough property, must combine with biomembrance process.MBBR technology combines the advantage of activated sludge process and biomembrance process, core is that the floating stuffing that density approaches water is added in the reactor as the microorganism growth carrier, filler is fluidized state under the current pushing effect in aeration and reactor, thereby the filling surface microorganism fully contacts with waste water and reaches the purpose of disposing of sewage.
MBBR is a kind of novel process that activated sludge process and biomembrance process combine, and compares with the other biological embrane method with activated sludge process, and it has some unique advantages.It has overcome activated sludge process and has taken up an area of shortcomings such as big, sludge bulking and sludge loss; Having solved the static bed biomembrane method needs regular back flushing, cleans complex operations problems such as filtrate and replacing aerator; Overcome fluidized-bed and made the excessive shortcoming of carrier fluidisation power consumption.
Summary of the invention
The invention provides a kind of and MBBR bonded moving-bed biofilm oxidation ditch, it is limited to solve oxidation ditch denitrogenation dephosphorizing effect, the problem that floor space is big, thus for oxidation ditch provides a kind of new application model, in sewage disposal, play a greater role in the hope of oxidation ditch.
A kind of moving-bed biofilm oxidation ditch comprises the ditch body, and the ditch body is provided with water-in, water outlet and mud discharging mouth, be provided with training wall and aerating apparatus in the ditch body, dose Moveable packings in the described ditch body, described water outlet place is provided with the water outlet screen cloth, and described mud discharging mouth place is provided with the spoil disposal screen cloth.
Described ditch shape can adopt conventional, also can adopt some special ditch type, both can select for use the asconoid type oxidation ditch also can select many ditches type oxidation ditch for use, and main oxidation ditch is divided into several aerobic zones and oxygen-starved area.
Described Moveable packings adopts materials such as polyethylene or polypropylene to make, and density is 0.95-0.99g/cm
3, being shaped as hollow cylindrical, aspect ratio is 0.3-0.6, specific surface area is 300-500m
2/ m
3
The amount of filling of described Moveable packings is whole oxidation ditch volumetrical 10-40%.
Described aerating apparatus is blowing-type aerating apparatus or mechanical type aerating apparatus.
Described mechanical type aerating apparatus is most preferably used aeration rotary brush.When oxidation ditch adopts the aeration rotary brush aeration, circulate in the ditch body in order to make Moveable packings and mud mixture, aeration rotary brush is provided with outward changes the brush screen cloth.With screen cloth aeration rotary brush is wrapped up, the grizzly bar of screen cloth vertically discharges, and reduces the resistance of screen cloth to mud mixture, and filler is glided along wall smoothly, and can stop filler to contact with the commentaries on classics brush.
The sieve diameter of all screen clothes all need run off to prevent Moveable packings less than the size of Moveable packings in the oxidation ditch.
Owing to exist Moveable packings in the oxidation ditch, Moveable packings has bigger specific surface, can form the large number of biological film, also exists a large amount of suspended sludges in the simultaneous oxidation ditch, the oxidation ditch system sludge concentration is improved a lot, so processing efficiency also have very large raising.Because mud that biomembrance process produces is few, sedimentation function is good, and the excess sludge that therefore whole process produces also is less than original oxidation ditch process.
The moving-bed biofilm method is applied in the oxidation ditch can improves mixed solution sludge concentration in the oxidation ditch greatly, and surplus sludge volume reduces simultaneously, so the unit capacity of oxidation ditch will improve a lot, floor space descends; Biomembrance process itself has good denitrogenation dephosphorizing effect, and the denitrogenation dephosphorizing ability of oxidation ditch itself, so whole denitrogenation dephosphorizing in addition has a distinct increment.
Advantage of the present invention is as follows:
1, sludge concentration height has added Moveable packings in the ditch, have higher sludge concentration than conventional activated sludge process, therefore can improve greatly sewage treating efficiency.
2, floor space is little, because the sludge concentration height of moving-bed biofilm, to the processing efficiency height of sewage, therefore handling identical sewage can reduce used area greatly.
3, energy consumption is low, and aerobic part adopts moving-bed biofilm technology, and filler has shearing action to air, and gas has more long residence time in water, improved the oxygen mass transfer utilising efficiency, reduces air consumption, so the also corresponding minimizing of required drive.
4, good denitrogenation and dephosphorization effect, sewage overflows oxidation ditch in the good district of supporting, thereby guarantees to have a liking for the excessive suction phosphorus of phosphorus bacterium, obtains better phosphor-removing effect; Moving-bed biofilm technology itself has good denitrification effect, and the aerobic-anaerobic that oxidation ditch is relatively distincter has alternately improved denitrification effect in addition.
5, simple to operate, this technology need not nitrification liquid and refluxes, and does not also have the repeatable operation of SBR, avoids the shortcoming of conventional activated sludge methods such as sludge bulking
Description of drawings
Fig. 1 is the plane structure chart of mechanical aeration moving-bed biofilm oxidation ditch;
Fig. 2 is the 2-2 sectional view of Fig. 1;
Fig. 3 is the 1-1 sectional view of Fig. 1;
Fig. 4 is the plane structure chart of blower aeration moving-bed biofilm oxidation ditch;
Fig. 5 is the 4-4 sectional view of Fig. 4;
Fig. 6 is the 3-3 sectional view of Fig. 4.
Embodiment
Embodiment 1
Mechanical aeration moving-bed biofilm oxidation ditch as Figure 1-3, oxidation ditch adopts single ditch formula, comprise the ditch body, the ditch body is provided with water-in 1, water outlet 10 and mud discharging mouth 2, be provided with training wall 3 and aeration rotary brush 6 in the ditch body, dose Moveable packings 11 in the ditch body, aeration rotary brush 6 outer settings are changeed brush screen cloth 7, and water outlet 10 places are provided with water outlet screen cloth 9.
The hollow cylindrical filler of Moveable packings 11 for adopting polypropylene to make, density is 0.98g/cm
3, aspect ratio is 0.5, specific surface area is 500m
2/ m
3
Oxidation ditch adopts aeration rotary brush 6 aerations, circulates in the ditch body in order to make Moveable packings 11 and mud mixture, and aeration rotary brush 6 outer settings are changeed brush screen cloth 7, and it is inverted trapezoidal that screen cloth becomes, and the bottom is apart from changeing brush 15-25cm.
Water outlet screen cloth 9 is placed in the pond of water outlet 10 and surveys.
Inboard, pond at mud discharging mouth 2 is provided with the spoil disposal screen cloth, and the spoil disposal screen cloth is made cylindrical, an end opening and spoil disposal pipe connection, and the other end is with the screen cloth shutoff of same sizing grid.
The grizzly bar that changes the brush screen cloth vertically discharges, and with the resistance of minimizing screen cloth to mud mixture, and can stop filler to contact with the commentaries on classics brush.
In the oxidation ditch sieve diameter of all screen clothes all less than the size of Moveable packings so that mud mixture passes through, and prevent that filler runs off.
Sewage enters the aerobic zone 8 of oxidation ditch from water-in 1, added the Moveable packings 11 of oxidation ditch volume 30% in the oxidation ditch, mud mixture and Moveable packings 11 flow according to water (flow) direction 4 along training wall 3, behind oxygen-starved area 5, carry out oxygenation by aeration rotary brush 6, aeration rotary brush 6 is by changeing brush screen cloth 7 parcels, and mud mixture and Moveable packings 11 flow at the oxidation ditch internal recycle, after the sewage disposal, be discharged into second pond by water outlet 10 through water outlet screen cloth 9.
The water inlet COD of sewage is 710g/L, and ammonia nitrogen is 60mg/L, and total phosphorus is 7.9mg/L, keeps sludge concentration 6000-7000mg/L in the whole service process, and through after the above-mentioned processing, sewage water outlet COD reduces to 35mg/L, and ammonia nitrogen is 2.5mg/L, and total phosphorus is 1mg/L.
Embodiment 2
Blast aeration moving-bed biofilm oxidation ditch shown in Fig. 4-6, oxidation ditch adopts single ditch formula, comprise the ditch body, the ditch body is provided with water-in 1, water outlet 10 and mud discharging mouth 2, be provided with training wall 3, impeller 12 and micropore aeration pipe 13 in the ditch body, dose Moveable packings 11 in the ditch body, water outlet 10 places are provided with water outlet screen cloth 9, and water outlet screen cloth 9 is placed in the pond of water outlet 10 and surveys.
The hollow cylindrical filler of Moveable packings 11 for adopting polyethylene to make, density is 0.95g/cm
3, aspect ratio is 0.3, specific surface area is 300m
2/ m
3
Inboard, pond at mud discharging mouth 2 is provided with the spoil disposal screen cloth, and the spoil disposal screen cloth is made cylindrical, an end opening and spoil disposal pipe connection, and the other end is with the screen cloth shutoff of same sizing grid.
In the oxidation ditch sieve diameter of all screen clothes all less than the size of Moveable packings so that mud mixture passes through, and prevent that filler runs off.
Sewage enters the aerobic zone 8 of oxidation ditch from water-in 1, added the Moveable packings 11 of oxidation ditch volume 15% in the oxidation ditch, mud mixture and moving-bed filler flow according to water (flow) direction 4 along training wall 3, behind oxygen-starved area 5, carry out oxygenation by micropore aeration pipe 13, mud mixture enters into aerobic zone, mud mixture and filler flow at the oxidation ditch internal recycle, concentration along the direction oxygen of current is more and more littler, progress into oxygen-starved area and anaerobic zone, constantly replace by aerobic and anaerobic, the nitrogen and phosphorus pollution material obtains removing, after the sewage disposal, be discharged into second pond through water outlet screen cloth 9 by water outlet 10 at aerobic section.
The water inlet COD of sewage is 560mg/L, and ammonia nitrogen is 43mg/L, and total phosphorus is 8.1mg/L, keeps sludge concentration 6000-8000mg/L in the whole service process, and through after the above-mentioned processing, sewage water outlet COD reduces to 58mg/L, and ammonia nitrogen is 4mg/L, and total phosphorus is 1.6mg/L.
Claims (8)
1. moving-bed biofilm oxidation ditch, comprise the ditch body, the ditch body is provided with water-in (1), water outlet (10) and mud discharging mouth (2), be provided with training wall (3) and aerating apparatus in the ditch body, it is characterized in that: dose Moveable packings (11) in the described ditch body, described water outlet (10) locates to be provided with water outlet screen cloth (9), and described mud discharging mouth (2) locates to be provided with the spoil disposal screen cloth.
2. moving-bed biofilm oxidation ditch as claimed in claim 1 is characterized in that: described ditch body adopts asconoid type or many ditches type.
3. moving-bed biofilm oxidation ditch as claimed in claim 1 is characterized in that: the hollow cylindrical filler of described Moveable packings (11) for adopting polyethylene or polypropylene to make, density is 0.95-0.99g/cm
3, aspect ratio is 0.3-0.6, specific surface area is 300-500m
2/ m
3
4. moving-bed biofilm oxidation ditch as claimed in claim 1 is characterized in that: the sieve diameter of described water outlet screen cloth (9) and spoil disposal screen cloth is less than the size of Moveable packings (11), and grizzly bar vertically discharges.
5. moving-bed biofilm oxidation ditch as claimed in claim 1 is characterized in that: described aerating apparatus is blowing-type aerating apparatus or mechanical type aerating apparatus.
6. moving-bed biofilm oxidation ditch as claimed in claim 5 is characterized in that: described mechanical type aerating apparatus is aeration rotary brush (6), and outer setting of described aeration rotary brush (6) changeed brush screen cloth (7).
7. moving-bed biofilm oxidation ditch as claimed in claim 6 is characterized in that: the sieve diameter of described commentaries on classics brush screen cloth (7) is less than the size of Moveable packings (11), and grizzly bar vertically discharges.
8. brush aeration moving-bed biofilm oxidation ditch as claimed in claim 1 is characterized in that: the amount of filling of described Moveable packings (11) is whole oxidation ditch volumetrical 10-40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201019146003A CN101786727A (en) | 2010-02-04 | 2010-02-04 | Moving-bed biofilm oxidation ditch |
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|---|---|---|---|
| CN201019146003A CN101786727A (en) | 2010-02-04 | 2010-02-04 | Moving-bed biofilm oxidation ditch |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102134124A (en) * | 2011-04-24 | 2011-07-27 | 江苏一环集团有限公司 | Integrated oxidation ditch |
| CN103332781A (en) * | 2013-07-11 | 2013-10-02 | 集美大学 | Moving bed bio-membrane reactor for aquaculture |
| CN105271511A (en) * | 2015-11-20 | 2016-01-27 | 山东华腾环保科技有限公司 | Decentralized sewage treatment device and installation method thereof |
| CN107417053A (en) * | 2017-09-18 | 2017-12-01 | 广东益康生环保服务有限公司 | A kind of multistage OA oxidation ditches |
| CN107473388A (en) * | 2017-08-29 | 2017-12-15 | 南昌工程学院 | Intensified denitrification and dephosphorization integrated constructed wetland system and its method for handling sewage |
| CN108178307A (en) * | 2018-03-12 | 2018-06-19 | 济宁市孚源环保科技有限公司 | A kind of seven sections of advanced nitrogen biochemical processing methods |
| CN108423827A (en) * | 2018-04-20 | 2018-08-21 | 成都利尔环保技术开发有限公司 | Black and odorous water handles integrated purifying equipment |
| CN110040852A (en) * | 2019-05-31 | 2019-07-23 | 凌志环保股份有限公司 | A kind of pot type oxidation ditch integrating device of intermittent duty |
| CN110182950A (en) * | 2019-05-31 | 2019-08-30 | 凌志环保股份有限公司 | Horizontal integrated oxidation ditch tank |
| CN110182951A (en) * | 2019-05-31 | 2019-08-30 | 凌志环保股份有限公司 | Horizontal integrated A/O oxidation ditch tank |
| CN110272119A (en) * | 2019-06-10 | 2019-09-24 | 凌志环保股份有限公司 | A kind of multipot type oxidation ditch |
| CN110357255A (en) * | 2019-07-04 | 2019-10-22 | 天津创业环保集团股份有限公司 | A kind of high-efficient denitrification and dephosphorization oxidation ditch |
| CN110835158A (en) * | 2019-06-10 | 2020-02-25 | 凌志环保股份有限公司 | Oxidation ditch type integrated sewage treatment device |
| CN111847642A (en) * | 2020-06-30 | 2020-10-30 | 桂林理工大学 | High-flow carrier material for water treatment microorganisms, preparation method and water treatment method |
| WO2022083801A3 (en) * | 2021-01-11 | 2022-06-02 | 凌志环保股份有限公司 | Fixed filler multi-bed-type oxidation ditch for treating rural domestic sewage |
| CN108423827B (en) * | 2018-04-20 | 2024-04-23 | 成都利尔环保技术开发有限公司 | Black and odorous water body treatment integrated purifying equipment |
-
2010
- 2010-02-04 CN CN201019146003A patent/CN101786727A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102134124A (en) * | 2011-04-24 | 2011-07-27 | 江苏一环集团有限公司 | Integrated oxidation ditch |
| CN102134124B (en) * | 2011-04-24 | 2013-05-01 | 江苏一环集团有限公司 | Integrated oxidation ditch |
| CN103332781A (en) * | 2013-07-11 | 2013-10-02 | 集美大学 | Moving bed bio-membrane reactor for aquaculture |
| CN105271511A (en) * | 2015-11-20 | 2016-01-27 | 山东华腾环保科技有限公司 | Decentralized sewage treatment device and installation method thereof |
| CN107473388A (en) * | 2017-08-29 | 2017-12-15 | 南昌工程学院 | Intensified denitrification and dephosphorization integrated constructed wetland system and its method for handling sewage |
| CN107473388B (en) * | 2017-08-29 | 2020-10-16 | 南昌工程学院 | Enhanced nitrogen and phosphorus removal integrated artificial wetland system and sewage treatment method thereof |
| CN107417053A (en) * | 2017-09-18 | 2017-12-01 | 广东益康生环保服务有限公司 | A kind of multistage OA oxidation ditches |
| CN108178307A (en) * | 2018-03-12 | 2018-06-19 | 济宁市孚源环保科技有限公司 | A kind of seven sections of advanced nitrogen biochemical processing methods |
| CN108423827A (en) * | 2018-04-20 | 2018-08-21 | 成都利尔环保技术开发有限公司 | Black and odorous water handles integrated purifying equipment |
| CN108423827B (en) * | 2018-04-20 | 2024-04-23 | 成都利尔环保技术开发有限公司 | Black and odorous water body treatment integrated purifying equipment |
| CN110182951A (en) * | 2019-05-31 | 2019-08-30 | 凌志环保股份有限公司 | Horizontal integrated A/O oxidation ditch tank |
| CN110182950A (en) * | 2019-05-31 | 2019-08-30 | 凌志环保股份有限公司 | Horizontal integrated oxidation ditch tank |
| CN110182950B (en) * | 2019-05-31 | 2022-11-04 | 凌志环保股份有限公司 | Horizontal integrated oxidation ditch tank |
| CN110182951B (en) * | 2019-05-31 | 2024-02-27 | 凌志环保股份有限公司 | Horizontal integrated A/O oxidation ditch tank |
| CN110040852A (en) * | 2019-05-31 | 2019-07-23 | 凌志环保股份有限公司 | A kind of pot type oxidation ditch integrating device of intermittent duty |
| CN110272119A (en) * | 2019-06-10 | 2019-09-24 | 凌志环保股份有限公司 | A kind of multipot type oxidation ditch |
| CN110835158A (en) * | 2019-06-10 | 2020-02-25 | 凌志环保股份有限公司 | Oxidation ditch type integrated sewage treatment device |
| CN110357255A (en) * | 2019-07-04 | 2019-10-22 | 天津创业环保集团股份有限公司 | A kind of high-efficient denitrification and dephosphorization oxidation ditch |
| CN111847642A (en) * | 2020-06-30 | 2020-10-30 | 桂林理工大学 | High-flow carrier material for water treatment microorganisms, preparation method and water treatment method |
| WO2022083801A3 (en) * | 2021-01-11 | 2022-06-02 | 凌志环保股份有限公司 | Fixed filler multi-bed-type oxidation ditch for treating rural domestic sewage |
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Open date: 20100728 |