CN103214140A - Sewage deep processing apparatus used for biological nitrogen and phosphorus removal - Google Patents
Sewage deep processing apparatus used for biological nitrogen and phosphorus removal Download PDFInfo
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Abstract
According to a sewage processing apparatus which utilizes the A2/O process to treat sewage, a membrane attached biofilms (MAB) is introduced in a second aerobic tank, and the processing efficiency of a nitrogen-containing compound and a phosphorus-containing compound in sewage can be increased. The sewage deep processing apparatus has the characteristics of nitration rate maximization, denitrification rate improvement, microbe individual amount increasing and residual sludge generation amount reduction while processing the sewage, thereby, the sewage deep processing apparatus can be taken as an effective processing apparatus in a whole field of sewage processing and can be wildly used.
Description
Technical field
The present invention relates to biological carbon and phosphorous removal with sewage depths reason device, particularly, relate to a kind of biological carbon and phosphorous removal of periphyton membrane process that utilizes and manage device with the sewage depths, this device is by utilizing A
2The periphyton film is set in the aerobic reactor of the waste disposal plant of O art breading sewage, and (membrane attached biofilms MAB), and has improved the nitrogenous compound contained in the sewage and the processing efficiency of P contained compound.
Background technology
The nitrogen of removing in the sewage disposal water is to keep water surrounding and urgent problem.The biological denitrificaion of widespread use in order to address this problem (biological nitrogen removal is hereinafter to be referred as BNR) has been finished this technology just technology can be regarded as when successfully realizing nitrification and denitrification respectively.
Usually, the core process of BNR technology is nitrification (nitrification), and its reason is: when nitrated carrying out fully just can carry out denitrification (denitrification).Usually help suitable water temperature that nitrated condition comprises 28-32 ℃, sufficiently long sludge retention time (sludge retention time), fully and the dissolved oxygen of stable supplying
Deng.But the characteristics of Aerobic Pond are few more the closer to the bottom dissolved oxygen in pond, therefore can't carry out stable nitrification in the various piece of biological reaction tank.
In addition, the main purpose of common activated sludge process is to remove organic carbon, and therefore owing to only take place faint nitratedly, the nitrated microorganism of autotrophy is eliminated from competitive relation.Thereby be nitration processes to be placed on deal with this competitive relation in the subsequent technique in common BNR system, but carry out internal recycle for denitrification and, cause cost issues thus for nitrated and want the volume in augmenting response pond fully.In addition, low water temperature, high ammonia nitrogen (NH
4 +-N) concentration, at the residence time of Aerobic Pond weak point, dissolved oxygen deficit, organic carbon concentration is too high, the pH value drops to below 6 and the cataclysm of pH etc. all becomes and hinders nitrated important factor.
Therefore, even also have in the winter time in the municipal effluent depths reason system of higher water temperature, provide to make and nitratedly microbiologically stabilisedly adhere to and grow and can supply with the envrionment conditions of sufficient dissolved oxygen the time, can improve nitric efficiency, thereby improve the nitrification and denitrification effect.
In addition, aspect the removal method of municipal effluent nitride and phosphide, following sewage depths reason device is disclosed in Korean Patent communique 10-0420301 number: shown in the prior art of Fig. 1, the sewage or waste water that to remove grit in sedimentation basin flows into as former water, generates first aeration phase of nitrate at least in first aerator tank 2 by nitrifying process; The nitrate that will flow into from described first aeration phase utilizes the endogenous respiration of denitrifying microorganism or the organism by external source carbon source, former water etc. to change into the back denitrification stage that nitrogen outgases back denitrification groove 3; The nitrogen that back denitrification was generated in the stage outgases in second aerator tank 4, to improve the sludge settling property of final deposition pool 50 described later, incites somebody to action second aeration phase of pollutant oxidations such as not processed organism, ammonia-state nitrogen simultaneously; Behind this second aeration phase, the precipitate phase that in final deposition pool 50, the supernatant liquor that purifies is separated and discharges with mud by solid-liquid separation; Will be from above-mentioned precipitate phase through precipitation and the part of sludge discharged refluxes, and keep sludge retention time, and will flow out water by aerator tank and be back to the biological reaction tank 1 from described first aeration phase, thereby before described first aeration phase, to flow into former water and carry out preceding denitrification, thus by with the similar A that can remove organism and nutrient salts simultaneously
2The O system carries out the biological respinse stage in back denitrification stage and preceding denitrification stage simultaneously.
In addition, as shown in Figure 2, utilize the waste disposal plant of ASA (advanced step aeration) technology to constitute by anoxic sludge sump, anaerobic pond, Aerobic Pond, anoxic pond, second Aerobic Pond and settling tank, the 80 volume % that flow into the water yield flow into anaerobic pond, and remaining 20 volume % flow into anoxic pond, thereby interior carbon source-inflow sewage is used as being used for denitrifying carbon source.The mixed solution of biological reaction tank finally in settling tank by solid-liquid separation, supernatant liquor is discharged as treating water, the mud that accounts for former water 20 volume % in the sedimentary mud is back to the anoxic sludge sump, this can induce the endogenous denitrification of the nitric nitrogen composition in the mud of backflow, and creates the top condition that the phosphorus that can make anaerobic pond discharges.
Thus, at the A that utilizes of the present invention
2In the waste disposal plant that O technology is handled sewage, introduce periphyton film (MAB), improved the nitrogenous compound that contained in the sewage and the processing efficiency of P contained compound, thereby finished the present invention.
The prior art document
Patent documentation
(patent documentation 0001) Granted publication number 10-0420301 number " sewage depths reason method and device thereof ".
Summary of the invention
The present invention proposes in order to address the above problem, and its purpose is to provide a kind of biological carbon and phosphorous removal of periphyton membrane process that utilizes to manage device with the sewage depths, and this device is by utilizing A
2O technology carries out in the waste disposal plant of sewage disposal periphyton film (MAB) being set, and has improved the nitrogenous compound that contained in the sewage and the processing efficiency of P contained compound.
To achieve these goals, the invention provides a kind of biological carbon and phosphorous removal of periphyton membrane process that utilizes and manage device with the sewage depths, this device comprises: the suspended solid that is contained in the sewage is carried out sedimentary preliminary sedimentation tank; Supply with the anoxic sludge sump of mud to anaerobic pond; Under anaerobic, the anaerobic pond that will handle from the sewage that described preliminary sedimentation tank flows into; By utilizing dissolved oxygen to carry out nitrated Aerobic Pond to transferring the ammonia-state nitrogen or the organonitrogen that contain the next treating water from described anaerobic pond; Under anoxic condition, thereby will be converted into the anoxic pond of nitrogen from sewage and the nitrogen salt from the treating water that described Aerobic Pond handover comes that described preliminary sedimentation tank flows into its removal by denitrification; Be provided with the periphyton film, thus second Aerobic Pond that untreated organism and phosphorus in the described anoxic pond are removed; To transfer the mud that is contained the next treating water from described second Aerobic Pond and carry out sedimentary final deposition pool.
Be provided with periphyton film (MAB) in the inside, pond of described second Aerobic Pond, bottom in the pond is provided with diffuser, a kind of in the carbon membrane (carbon membrane) that described periphyton film (MAB) is selected from that specific surface area is big, the hollow fiber of the absorption that helps microorganism, fixing and growth, flat sheet membrane, film surface are handled with non-woven fabrics, and described periphyton film (MAB) is formed by silicone resin or polythene material, and described periphyton film shared volume in second Aerobic Pond is 10-15 volume % (MAB/ second Aerobic Pond).
In addition, be benchmark with the cumulative volume of the sewage that flows into described sewage depths reason device, the sewage that flows into anaerobic pond accounts for 70-90 volume %, and the sewage that flows into anoxic pond accounts for 10-30 volume %, and the recurrence rate of mud is 15-25 volume % (returned sluge/inflow water).
According to the A that utilizes of the present invention
2The sewage depths reason device that O technology is handled sewage is introduced periphyton film (MAB) in second Aerobic Pond, improved the nitrogenous compound that contained in the sewage and the processing efficiency of P contained compound.The present invention also has can make nitrated rate maximization when sewage disposal, improve the denitrification rate, increase characteristics such as microorganism number of individuals and minimizing excess sludge generation, therefore, in the whole field of sewage disposal, can be widely used as effective treatment unit.
Description of drawings
Fig. 1 is the schematic drawing of the sewage depths reason device of prior art;
Fig. 2 is the synoptic diagram of the waste disposal plant that utilizes ASA technology of prior art;
Fig. 3 is the A of utilization of the present invention
2The biological carbon and phosphorous removal of O technology is managed schematic representation of apparatus with the sewage depths;
Fig. 4 is the state simulation figure that removes the nitrogenous compound that is contained in the sewage by the microbial film that the film surface forms;
Fig. 5 is the photo that the state of periphyton film (MBA) is set in second Aerobic Pond of sewage of the present invention depths reason device;
Fig. 6 is the photo of periphyton film of the present invention (MBA).
Description of reference numerals
10: preliminary sedimentation tank 20: the anoxic sludge sump
30: anaerobic pond 40: Aerobic Pond
50: 60: the second Aerobic Ponds of anoxic pond
70: final deposition pool 80: diffuser
90: periphyton film (MAB)
Embodiment
Describe the preferred embodiment that utilizes the biological carbon and phosphorous removal of periphyton membrane process with sewage depths reason device of the present invention in detail below in conjunction with accompanying drawing, in detailed description, the formation that can understand easily the technician of sewage treatment area and effect have been carried out summary or have been omitted.
As shown in Figure 3, the invention provides a kind of biological carbon and phosphorous removal of periphyton membrane process that utilizes and manage device with the sewage depths, this device comprises: the suspended solid that is contained in the sewage is carried out sedimentary preliminary sedimentation tank 10; Supply with the anoxic sludge sump 20 of mud to anaerobic pond; Under anaerobic, the anaerobic pond 30 handled of the sewage that will flow into from the outside; By utilizing dissolved oxygen to carry out nitrated Aerobic Pond 40 to transferring the ammonia-state nitrogen or the organonitrogen that contain the next treating water from described anaerobic pond; Under anoxic condition, thereby will be converted into the anoxic pond 50 of nitrogen from sewage and the nitrate from the treating water that described Aerobic Pond handover comes that described preliminary sedimentation tank flows into its removal by denitrification; Be provided with the periphyton film, thus second Aerobic Pond 60 that untreated organism and phosphorus in the described anoxic pond are removed; To transfer the mud that is contained the next treating water from described second Aerobic Pond and carry out sedimentary final deposition pool 70.
According to sewage of the present invention depths reason device, interior carbon source-inflow sewage is used as denitrifying carbon source.
Describe each integrant of described sewage depths reason device below in detail.
Described preliminary sedimentation tank 10 is to be used for flowing into the treating pond that various suspended solids that sewage contained before the described sewage depths reason device etc. are removed.What carry out in described anoxic sludge sump (Anoxic Sludge Tank) 20 is to stay for some time from the returned sluge that final deposition pool refluxes, by the NO in the endogenous denitrification removal returned sluge
3-N, and make in the reaction tank in conjunction with oxygen (
NO
x) minimize, so that the optimum environment that dissolved phosphorus is discharged to be provided, thereby making the stable technology of mud in anaerobic pond, the residence time that the water yield is gone in preferred convection current is 0.3-0.5 hour.If the residence time less than 0.3 hour of the water yield is gone in convection current in the anoxic sludge sump, may reduce organic oxidation, decomposition efficiency; Surpass 0.5 hour if the residence time of the water yield is gone in convection current, the intravital phosphorus of microorganism is discharged once more.
In fact, if when the amount of returned sluge is 50 volume % of processing capacity, the then actual residence time is 1 hour, if the amount of returned sluge is 30 volume % of processing capacity, the then actual residence time is 1.7 hours.Because anoxic mud is under the situation that does not have former water to flow into, in final deposition pool, carry out solid-liquid separation and the high-concentration activated sludge that obtains, therefore, its MLSS concentration can be kept and exceed 2.5 times to 4 times concentration than other biological reaction tank.
Because the influence of anaerobic sludge, described anaerobic pond (Anaerobic Tank) 30 is kept anaerobic state completely, utilizes the labile organism that flows in the sewage as the energy, eliminates the release of phosphorus and the nitrogen in the mud is adsorbed removal.The residence time in described anaerobic pond is preferably 0.8-1.2 hour, if the residence time in anaerobic pond was less than 0.8 hour, then may cause the burst size of the phosphorus of microorganism to reduce owing to the residence time that flows into the water yield is too short, organic oxidation, decomposition efficiency reduce; The stench that causes producing hydrogen sulfide if the sulfate ion that the residence time in anaerobic pond greater than 1.2 hours, then flows in the sewage to be contained will reduce.
Described Aerobic Pond (Aerobic Tank) 40 is supplied with dissolved oxygen by the diffuser that is provided with in its bottom, is fully providing oxidation operation, nitrated, DO to keep under the condition of required dissolved oxygen NH
4 +The too much picked-up of phosphorus under aerobic condition, takes place and the oxidation operation phenomenon takes place simultaneously in-N organonitrogen generation nitration reaction and being transformed.The residence time that flows into water in described Aerobic Pond is preferably 2.4-3.0 hour.If the residence time that flows into water in Aerobic Pond, may cause organic oxidation less than 2.4 hours and decompose effect and reduce; If mud disintegration, needle-like flco (pin floc) phenomenon, nitrification efficiency, may take place greater than 3.0 hours and lowly reach phenomenons such as dissolved oxygen deficiency in the residence time that flows into water.
In described Aerobic Pond, carry out fully nitrated after, in described anoxic pond (Anoxic Tank) 50, in the anoxic condition of non-absolute anaerobic state (in conjunction with in the presence of the oxygen: NO
x-N) under, utilize inflow water as interior carbon source as the energy, thereby nitrate be converted into nitrogen with its removal.At this moment, BOD is removed as the dissolving of the major part in the inflow water of carbon source, and ammonia-state nitrogen is synthesized in vivo.The residence time that flows into water in anoxic pond is preferably 2.0-2.3 hour.If the residence time that flows into water in anoxic pond may cause denitrification inefficiency and organic removal inefficiency less than 2.0 hours; If the residence time that flows into water in anoxic pond, the phosphorus that may cause microorganism to absorb was discharged in the reaction tank once more greater than 2.3 hours, thereby caused phosphor-removing effect to descend.
In the pond of described second Aerobic Pond 60, be provided with the periphyton film by appropriate means, simultaneously in order to remove last
Untreated organism and phosphorus in the reaction tank prevent that phosphorus in the stripping once more of final deposition pool and guarantee the dissolved oxygen for the treatment of water, is provided with diffuser 80 in the bottom of described second Aerobic Pond.The residence time that flows into water in second Aerobic Pond is preferably 0.5-1.0 hour.If the residence time that flows into water in second Aerobic Pond 60 then can't be guaranteed the amount of dissolved oxygen, and can't remove the residual organic matter of failing to remove in reaction tank before less than 0.5 hour; If the residence time that flows into water in second Aerobic Pond 60 above 1.0 hours, can cause excessive aeration and reduce economy.
As shown in Figure 4, described periphyton film (MAB) is meant the oxygen that utilization is supplied with to the outside from film inside, the microbial film that forms on the film surface.When aerobic mixed solution uses periphyton film (MAB) technology, be attached on the film and the biomembranous top that forms, promptly, the organic carbon concentration height of a side that contacts with described aerobic mixed solution, but the concentration by organic carbon behind the microbial film reduces, form a kind of in biomembranous bottom oxygen abundance, but the insufficient environment of organic carbon.Under this environment, nitrated micropopulation of aforesaid autotrophy and heterotrophic microorganism group can not be in competitive relation, bottom the closer to periphyton film (MAB), the habitat condition of nitrated micropopulation is sufficient more, therefore adopt periphyton film (MAB) technology can make the apposition growth of nitrated microorganism the possibility that becomes, thereby the raising nitrification efficiency can be removed organism simultaneously.
The hole that described periphyton film (MAB) is selected from that specific surface area is big, the absorption that helps microorganism, hollow fiber, flat sheet membrane and film surface fixing and growth are handled with non-woven fabrics is a kind of in the carbon membrane (carbon membrane) of 0.4-6 μ m, and described periphyton film (MAB) is formed by silicone resin or polythene material.
In addition, the cultural method that adopts for the biomembranous formation of described periphyton film 90 filters for the mixed solution that uses suction pump will take from the nitrification tank earlier, after film surface attachment microorganism, from film internal feed pure oxygen, thereby the microbial film that makes periphyton film 90 obtains growth, finishes thus.
According to the present invention, in the biological reaction tank that utilizes periphyton film 90 technologies, when micropopulation was combined operation with activated sludge reaction pond (Aerobic Pond), nitrated rate and denitrification rate except improving active sludge can also improve organic clearance.In addition, can make microfauna (microfauna by utilizing periphyton film 90 technologies to provide a kind of; Protozoon) therefore the environment of apposition growth, can prevent these protozoons effusive problem in the reaction tank easily.The microorganism of periphyton film 90 surface biological films has oligochaetes (oligochaetes), campanularian (vorticella), kidney shape worm (colpoda), wheel animalcule (rotaria), chamber wheel animalcule (1ecane), nematode (nematode) of protozoon (protoza) and multicellular animals (metazoan) system etc.
Described periphyton film 90 shared volume in second Aerobic Pond is preferably 10-15 volume % (MAB/ second Aerobic Pond).If periphyton film 90 shared volume in second Aerobic Pond may cause the nitrification and denitrification of not processed residual nitrogen fully to carry out less than 10 volume %; If shared volume is greater than 15 volume % in second Aerobic Pond for periphyton film 90, the thorough mixing that may hinder the mixed solution in second Aerobic Pond flows.
The mud that described final deposition pool will be contained in the inflow water that above-mentioned second Aerobic Pond flows into carries out post precipitation, and to outside drain, a part that is deposited to the mud of final deposition pool below is back to the anoxic sludge sump with supernatant liquor, and remaining mud is to outside drain.At this moment, the recurrence rate of mud is preferably 15-25 volume % (returned sluge/inflow water).If the recurrence rate of mud is less than 15 volume %, because the reduction of the microorganism feed rate in the biological reaction tank (anoxic sludge sump, anaerobic pond, anoxic pond, second Aerobic Pond), thereby MLSS concentration can't be kept; If the recurrence rate of mud is greater than 25 volume %, water quality treatment deterioration and the returned sluge concentration that causes reduces because the sludge interface of final deposition pool rises, and causes the phenomenon that the MLSS concentration in the biological reaction tank reduces takes place, and finally reduces processing efficiency.
According to the present invention, preferred, be benchmark with the cumulative volume that flow into the sewage in the reason device of described sewage depths, the sewage that flows in the anaerobic pond accounts for 70-90 volume %, and the sewage that flows in the anoxic pond accounts for 10-30 volume %.If the sewage that flows into anaerobic pond less than 70 volume %, because the F/M ratio of biological reaction tank reduces, may cause the activity of microorganism to reduce; If the sewage that flows into anaerobic pond is greater than 90 volume %,, flow into to the anoxic pond stage because the F/M of anaerobic pond may cause organic oxygenolysis inefficiency than increasing
The carbon source feed rate reduce, thereby cause denitrification efficient to reduce.In addition, if the sewage that flows into anoxic pond less than 10 volume %, because required organic feed rate reduces in the anti-nitration reaction, may cause denitrification efficient to reduce; If the sewage that flows into anoxic pond is greater than 30 volume %, because organic feed rate surplus may cause increasing to the effusive organic amount of second Aerobic Pond, thereby worsen water quality.
In addition,, stirrer (not shown among Fig. 3, as only to be labeled as M) is set in anoxic sludge sump, anaerobic pond and anoxic pond, stirs the inflow water or the returned sluge that flow into according to sewage of the present invention depths reason device.
What in addition, have a said structure is utilizing A according to sewage of the present invention depths reason device
2Introduce periphyton film 90 in the waste disposal plant of O technology, thereby improved the nitrogenous compound contained in the sewage and the removal efficient of P contained compound.
Below, describe the biological carbon and phosphorous removal of periphyton membrane process that utilizes of the present invention in detail and manage device, but the present invention is not limited to following specific embodiment with the sewage depths by specific embodiment.
1, sewage disposal condition (embodiment 1)
As shown in Figure 3, made according to the simulation experiment device (Pilot-plant) of sewage of the present invention depths reason device former water has been handled.The specification of each equipment of described sewage depths reason device
Shown in following table 1 and table 2.
Table 1 (unit: m)
| Equipment | Size (wide * length * height) |
| The anoxic sludge sump | 4.0×4.0×16.0 |
| Anaerobic pond | 4.0×10.0×16.0 |
| Aerobic Pond | 12.0×10.0×16.0 |
| Anoxic pond | 10.0×10.0×16.0 |
| Second Aerobic Pond | 4.0×10.0×16.0 |
Be applicable to present embodiment 1 MAB the film utilization be the hollow fiber of polyethylene material, its specification
As shown in table 2 below.In addition, for the cultural method that microbial film adopted that forms MAB is: the mixed solution that uses suction pump will take from the nitrification tank filters earlier, after film surface attachment microorganism, from film internal feed pure oxygen, thereby the microbial film that makes MAB obtains growth, finishes thus.The microorganism of the surface biological film of periphyton film 90 has oligochaetes (oligochaetes), campanularian (vorticella), kidney shape worm (colpoda), wheel animalcule (rotaria), chamber wheel animalcule (lecane), nematode (nematode) of protozoon (protoza), multicellular animals (metazoan) system etc.
Table 2
Fig. 5 is the photo that the state of periphyton film (MBA) is set in second Aerobic Pond of sewage of the present invention depths reason device; Fig. 6 is the photo according to the periphyton film (MBA) of the embodiment of the invention.
The proterties of the employed former water of obtaining from N sewage work of sewage is as shown in table 3 below in the present embodiment.
Table 3
In addition, the operational conditions of present embodiment is as shown in table 4 below, is benchmark with the cumulative volume of the sewage that flows into described sewage depths reason device, and the sewage that flows into anaerobic pond accounts for 70 volume %, and the sewage that flows into anoxic pond accounts for 30 volume %.
Table 4
Embodiment 2
Use and embodiment 1 same size
Sewage depths reason device, with embodiment 1 the same terms under, the former water of sewage with proterties shown in the table 3 is handled, different is, MBA shared ratio in second Aerobic Pond is 15 volume %, is benchmark with the cumulative volume of the sewage that flows into described sewage depths reason device, and the sewage that flows into anaerobic pond accounts for 90 volume %, the sewage that flows into anoxic pond accounts for 10 volume %, and the recurrence rate of mud is 25 volume % (returned sluges/inflow water).
Comparative Examples 1
Use the sewage depths reason device analog machine that utilizes ASA technology shown in Figure 2 that the former water of sewage is handled.The specification of each equipment of described sewage depths reason device
As above shown in the table 1, as above shown in the table 3, operational conditions is as above shown in the table 4 for the proterties of the former water of sewage.
Different is, the 80 volume % that flow into water flow into anaerobic pond, and 20 remaining volume % flow into anoxic pond, and the recurrence rate of the treating water from second Aerobic Pond to anoxic pond is 100-200 volume %, and the recurrence rate of mud is 20 volume % (returned sluges/inflow water).
2. analytical procedure
To flow into the outflow water of the former water in N sewage-farm as 1 final deposition pool, and assay determination SS, BOD, COD
Mn, T-N, NH
4 +-N, T-P, pH value, water temperature.Utilize To-ApH Meter (HM-21P) that pH value and water temperature are measured, according to Korea S's water pollution engineering experiment method
BOD is analyzed, use the GF/C of diameter 47mm to consider material by U.S.A Standard method and SS is analyzed, utilize the HS-2300Plus analyser of Humas company, after reagent and test portion have been done pre-treatment, COD
Mn, T-N, NH
4 +-N, T-P analyze.
3. analytical results
After handling by embodiment 1,2 and 1 pair of sewage of Comparative Examples, analyze according to above-mentioned 2 analytical procedure, the analytical results of pollutent mean concns is as shown in table 5 below.
Table 5 (unit: clearance %)
From above-mentioned table 5 as can be known, compare with Comparative Examples 1, embodiment 1,2 has more excellent pollutants removal rate.
Particularly, compare with Comparative Examples 1, embodiment 1,2 has excellent more ammonia-state nitrogen (NH
4 +-N) and the clearance of total nitrogen (T-N) and total phosphorus (T-P), what can also confirm is in embodiment 1,2, even change some sewage disposal conditions, also can not cause the noticeable change of pollutants removal rate.
In addition, what can also confirm is, when the mixed solution of second Aerobic Pond is suitable for MAB technology, can consume the organic carbon of (removal) by increasing nitrification efficiency, increase denitrification efficient and denitrogenation, carry out existing nitration processes, denitrification process and three kinds of technologies of activated sludge process simultaneously, thereby improve the processing efficiency of biological sewage.
As mentioned above, utilize the biological carbon and phosphorous removal of periphyton membrane process to manage device according to the preferred embodiment of the invention with the sewage depths, can carry out multiple variation and change in the scope that does not break away from technological thought of the present invention, this should be clear and definite for a person skilled in the art.
Claims (6)
1. a biological carbon and phosphorous removal that utilizes the periphyton membrane process is characterized in that this device comprises: the suspended solid that is contained in the sewage is carried out sedimentary preliminary sedimentation tank with sewage depths reason device; Supply with the anoxic sludge sump of mud to anaerobic pond; Under anaerobic, the anaerobic pond that will handle from the sewage that described preliminary sedimentation tank flows into; By utilizing dissolved oxygen to carry out nitrated Aerobic Pond to transferring the ammonia-state nitrogen or the organonitrogen that contain the next treating water from described anaerobic pond; Under anoxic condition, thereby will be converted into the anoxic pond of nitrogen from sewage and the nitrate from the treating water that described Aerobic Pond handover comes that described preliminary sedimentation tank flows into its removal by denitrification; Be provided with the periphyton film, thereby to second Aerobic Pond removed at the not processed organism of described anoxic pond and phosphorus and will transfer the mud that be contained the treating water that comes from described second Aerobic Pond and carry out sedimentary final deposition pool.
2. device according to claim 1, wherein, described second Aerobic Pond is provided with the periphyton film in inside, pond, is provided with diffuser in the bottom in pond.
3. device according to claim 2, wherein, a kind of in the carbon membrane that described periphyton film is selected from that specific surface area is big, the hollow fiber of the absorption that helps microorganism, fixing and growth, flat sheet membrane, film surface are handled with non-woven fabrics, and described periphyton film is formed by silicone resin or polythene material.
4. device according to claim 3, wherein, described periphyton film shared volume in second Aerobic Pond is 10-15 volume %.
5. according to any described device among the claim 1-4, wherein, be benchmark with the cumulative volume of the sewage that flows into described sewage depths reason device, the sewage that flows into anaerobic pond accounts for 70-90 volume %, and the sewage that flows into anoxic pond accounts for 10-30 volume %.
6. device according to claim 5 wherein, is a benchmark with the cumulative volume of the sewage that flows into described sewage depths reason device, and the recurrence rate of mud is 15-25 volume %.
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| CN1792876A (en) * | 2006-01-06 | 2006-06-28 | 哈尔滨工业大学 | Process for nitrating synchronous phosphorus removing denitrogen of composite type active mud oxygen-dificient poly-phosphorus biological film |
| CN101113059A (en) * | 2007-06-22 | 2008-01-30 | 哈尔滨工业大学 | Method for low-temperature denitrification phosphorous removal |
| CN101602564A (en) * | 2009-07-21 | 2009-12-16 | 南京大学 | A kind of treatment process of coking chemical waste water |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030066271A (en) * | 2002-02-05 | 2003-08-09 | 강용태 | ASAM: Advanced Step Aeration with Media(ASA, SFC-Biofilter) |
| CN1792876A (en) * | 2006-01-06 | 2006-06-28 | 哈尔滨工业大学 | Process for nitrating synchronous phosphorus removing denitrogen of composite type active mud oxygen-dificient poly-phosphorus biological film |
| CN101113059A (en) * | 2007-06-22 | 2008-01-30 | 哈尔滨工业大学 | Method for low-temperature denitrification phosphorous removal |
| CN101602564A (en) * | 2009-07-21 | 2009-12-16 | 南京大学 | A kind of treatment process of coking chemical waste water |
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