CN209367934U - A kind of step carbon utilizes intensified denitrification and dephosphorization integration apparatus - Google Patents

Abstract

The utility model discloses a kind of step carbon to utilize intensified denitrification and dephosphorization integration apparatus, belongs to water treatment facilities field.For the dephosphorization removing nitric efficiency and the not high problem of utilization of carbon source rate of prior art sewage, the utility model provides a kind of step carbon and utilizes intensified denitrification and dephosphorization integration apparatus, it includes pond body, the pond body includes sequentially connected anaerobic zone, mud-water separating area I, aerobic zone, mud-water separating area II, anoxic zone, aeration zone and mud-water separating area III afterwards, the anaerobic zone is connect with water inlet pipe, mud-water separating area III is connect with outlet pipe, anoxic zone and mud-water separating area I pass through the super jump-over connection of muddy water mixed solution, bottom is provided with aerator in bottom and rear aeration zone in aerobic zone.The utility model can make in mud mixture Denitrifying Phosphate Accumulating Organisms realize the synchronous dephosphorization of denitrification denitrogenation by electron acceptor of nitrate in anoxia condition, realize carbon source stepwise multi-use, carbon resource shortage problem is solved, also has the advantages that simple structure and reasonable design, easily fabricated.

Description

A kind of step carbon utilizes intensified denitrification and dephosphorization integration apparatus

Technical field

The utility model belongs to water treatment facilities field, is removed more specifically to a kind of step carbon using strengthened denitrification Phosphorus integration apparatus.

Background technique

In recent years, due to the discharge of nitrogen phosphorus in sanitary sewage and industrial wastewater, water eutrophication phenomenon still shows Increasing trend, thus the content for how controlling nitrogen phosphorus in water is still the emphasis of current Study of Water Environment.Existing dirt Water treatment technology mostly uses traditional biological carbon and phosphorous removal treatment process, and basic principle is all anaerobic-aerobic-anoxic process, Have the following problems: the competition of a. carbon source, low-carbon-source sewage are difficult to meet dephosphorization denitrogenation requirement simultaneously；B. sludge age contradiction；C. more Kind bacterium is in a sludge system, it is difficult to keep respective advantage.Thus wastewater treatment facility needs in addition to add carbon source to realize nitrogen phosphorus More preferable removal, such as methanol, sodium acetate, but which further improves operating costs.There is researcher to propose remaining dirty recently Mud anaerobic fermented liquid is used to supplement the deficiency of carbon source in sewage as additional carbon.Although sludge anaerobic fermentation liquid can improve dirt Carbon source situation in water, but it is only limited to laboratory experiment conceptual phase at present, large-scale application still has great difficulty, simultaneously The poisonous and harmful substance that may contain in sludge can destroy the microflora of sewage treatment, should cautiously examine before practical application Consider.Thus how the effective rate of utilization of carbon source is improved by process modification, so that the efficient removal for realizing nitrogen phosphorus is still research Emphasis.Double sludge denitrification dephosphorization systems that Kuba etc. was proposed in 1996, have many scholars to be studied in recent years.And tradition Aerobic nitrogen removal dephosphorization system compare, which can save 50% COD, and the consumption of oxygen and the yield of sludge also have A degree of reduction；But the technique have the defects that it is certain, i.e., water outlet in can residual fraction ammonia nitrogen and be unable to reach discharge Standard.

It is also correspondingly improved regarding to the issue above, it is open such as Chinese Patent Application No. CN201520349130.6 Day is on October 7th, 2015, and which disclose a kind of integrated high-efficiency decarburization denitrification dephosphorization systems, belong to sewage disposal technology Field, including it is sludge treating system and sequentially connected grid conditioning tank, aeration tank, the first sedimentation basin, anoxic pond, aerobic Pond and the second sedimentation basin；It is mainly used for the processing of high concentration domestic sewage of villages and small towns and industrial wastewater, is particularly suited for high COD, high ammonia The processing of nitrogen sanitary sewage or industrial wastewater.Multipoint water feeding aeration+primary sedimentation+anoxic in the utility model+aerobic+secondary Precipitating, can be used My Perspective On The Co-building, is further reduced occupied area, cost of reducing investment outlay.The utility model is divided using science With water inlet point and inflow, provide good living environment for denitrifying bacterium, nitrifier, polyP bacteria etc., improve decarburization and The efficiency of denitrogenation dephosphorizing.The patent is disadvantageous in that: carbon source does not obtain sufficient utilization, and the consumption of oxygen is larger, whole Body purification of water quality is general.

For another example Chinese Patent Application No. 201020588361.X, publication date are on June 15th, 2011, and which disclose one Kind a kind of integration denitrification and dephosphorization treatment tank, including successively established with purification sequence sludge-tank, anoxic section, aerobic section, Reflux section, fillter section, contact sterilizing section, it is characterized in that: being sequentially vertically arranged muti-piece baffle plate, baffling according to flow direction in anoxic section It is arranged at intervals with stuffing frame between plate, and is filled with filler at stuffing frame；In aerobic section, sequentially it is vertically arranged according to flow direction multiple It is aerated gallery, aeration gallery bottom sets aerator, is aerated except gallery and is provided with stuffing frame, and fills out at stuffing frame Material.The utility model combines reasonable treatment process and structure using biofilm, sewage treatment is obtained excellent Clean-up effect has many advantages, such as that efficient, low consumption, safe, stable, energy saving, management is easy, occupied area is small.The patent Be disadvantageous in that: although sewage can be handled efficiently, structure is complicated, and the reuse rate of carbon source is lower, integral into This is higher.

Summary of the invention

1, it to solve the problems, such as

For the dephosphorization removing nitric efficiency and the not high problem of utilization of carbon source rate of prior art sewage, the utility model provides one Kind step carbon utilizes intensified denitrification and dephosphorization integration apparatus.Can make in mud mixture Denitrifying Phosphate Accumulating Organisms anoxia condition with Nitrate is that electron acceptor realizes the synchronous dephosphorization of denitrification denitrogenation, realizes carbon source stepwise multi-use, asks to solve carbon source deficiency Topic is enterprise's save the cost, also has structure letter so that the dephosphorization removing nitric efficiency in the utilization rate and sewage of carbon source is all higher Advantage single, design is reasonable, easily fabricated.

2, technical solution

To solve the above problems, the utility model adopts the following technical scheme.

A kind of step carbon utilizes intensified denitrification and dephosphorization integration apparatus, including pond body, the pond body include sequentially connected Anaerobic zone, mud-water separating area I, aerobic zone, mud-water separating area II, anoxic zone, rear aeration zone and mud-water separating area III, it is described to detest Oxygen area is connect with water inlet pipe, and mud-water separating area III is connect with outlet pipe, and anoxic zone and mud-water separating area I pass through muddy water mixed solution Super jump-over connection, bottom is provided with aerator in bottom and rear aeration zone in aerobic zone.The cascade utilization for realizing carbon source, is not necessarily to In addition carbon source is launched, and whole good denitrification dephosphorization effect, efficiency are very fast.

Further, it is provided with composite filling in the anaerobic zone, is provided with inclined tube in three mud-water separating areas and fills out Expect, is provided with MBBR filler in aerobic zone, anoxic zone and rear aeration zone.The different fillers of setting, are conducive to dirt in different zones Dephosphorization denitrogenation in water keeps its effect preferable.

Further, in aerobic zone, anoxic zone and the area of rear aeration zone three fill volume of MBBR filler account for it is each The 1/3~1/2 of area's volume.Make it at the same have the function of coupling stepwise muddy water reactor and biomembrane cascade reaction without The two reactors are added, save equipment so that cost reduces.

It further, further include groove, bottom in bottom and rear aeration zone, groove is arranged in aerobic zone in the groove Inside it is provided with aerator.Limit the movement of aerator.

Further, the upper end of groove is provided with end casing, and the surrounding of end casing is provided with waterproof sealing layer.Effectively mention The service life of high aerator.

Further, the aerator is micro-hole aerator.Uniformly, coefficient of oxygen utilization is high for oxygen supply.

Further, the micro-hole aerator includes horizontally disposed micropore aeration pipe, in vertical micropore aeration pipe Heart pipe, the aeration pump being connected with central tube are provided with solarization air cap on micropore aeration pipe.Multi-group micropores aeration tube and central tube Setting, accelerates aeration efficiency.

Further, protective cover is provided on the solarization air cap.Effectively prevent the blocking of solarization air cap.

Further, mud-water separating area II is connect with aerobic zone by mud-water separating area II mud return line, muddy water point It is connect with anaerobic zone by mud-water separating area III mud return line from area III.

Further, mud-water separating area II mud return line and mud-water separating area III mud return line are provided with valve Door.Regurgitant volume is controlled, and valve can be closed in time when return pipe breaks down, termination procedure continues to run, maintenance side Just.

3, beneficial effect

Compared with the prior art, the utility model has the following beneficial effects:

(1) the utility model is by being arranged aerator in aerobic zone and rear aeration zone, respectively to aerobic zone and rear aeration zone Gas supply, the mud mixture of mud-water separating area I surmount pipe by muddy water mixed solution and flow into anoxic zone, anti-nitre in mud mixture Change polyP bacteria and realize the synchronous dephosphorization of denitrification denitrogenation by electron acceptor of nitrate in anoxia condition, realizes carbon source stepwise multi-use, Carbon resource shortage problem is solved, the Denitrifying Phosphate Accumulating Organisms and nitrifier in sludge are in two mutually independent sludge systems, solve The two sludge age contradiction；

(2) the utility model is provided with composite filling in anaerobic zone, and heat dissipation performance is high, and resistance is small, water distribution, gas distribution performance It is good；It is provided with inclined tube filler in three mud-water separating areas, the sludge settling property generated in mud-water separating area is good, is conducive to The removal of sludge below, and reduce occupied area；

(3) the utility model is provided with MBBR filler in aerobic zone, anoxic zone and rear aeration zone, substantially increases filter The biomass of material improves removal rate, and effluent quality is better than level-one A after processing, and the fill volume of MBBR filler accounts for each area The 1/3~1/2 of volume makes it have the function of coupling stepwise muddy water reactor and biomembrane cascade reaction without adding The two reactors save equipment so that cost reduces；

(4) aerator is arranged in groove the utility model, effectively prevents aerator during the work time and moves Dynamic, the situation of job insecurity occurs；And the sealant that discharges water is set in the end casing surrounding of groove upper end, so that aerator obtains Protection, effectively prevents sludge or water enters in aerator the use for influencing aerator, improves the service life of aerator；

(5) the utility model aerator is micro-hole aerator, and uniformly, coefficient of oxygen utilization is high, and low energy consumption for oxygen supply；Micro-hole aerator Including horizontally disposed micropore aeration pipe, the central tube of vertical micropore aeration pipe, the aeration pump being connected with central tube, micropore exposure It is provided with solarization air cap on tracheae, is combined by multi-group micropores aeration tube with central tube and improves aeration efficiency, micropore aeration pipe water Flat setting effectively prevent aeration hole plug；

(6) mud-water separating area II is connect with aerobic zone by mud-water separating area II mud return line in the utility model, mud Water Disengagement zone III is connect with anaerobic zone by mud-water separating area III mud return line, and precipitating sludge passes through back by self weight respectively Flow tube is back to corresponding region, energy saving, and valve is arranged on return pipe, controls the regurgitant volume of sludge, and when generation When blocking, valve can be closed and rebuild, it is easy to maintenance；

(7) the utility model is for holiday village, Peasants Joy, service area, natural village, the collection that can not access city planting ductwork Middle cell etc. and the various industrial organic sewages similar with sanitary sewage, using integrated design, automation control, construction letter It is single, it can be placed to table or underground.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model.

Figure number explanation:

1, anaerobic zone；2, mud-water separating area I；3, aerobic zone；4, mud-water separating area II；5, anoxic zone；6, rear aeration zone；7, Mud-water separating area III；8, water inlet pipe；9, composite filling；10, inclined tube filler；11, MBBR filler；12, sludge pump；13, it is aerated Device；14, muddy water mixed solution surmounts pipe；15, mud-water separating area II mud return line；16, mud-water separating area III mud return line； 17, outlet pipe；18 aeration pumps.

Specific embodiment

The utility model is further described below with attached drawing combined with specific embodiments below.

Embodiment 1

As shown in Figure 1, a kind of step carbon includes using intensified denitrification and dephosphorization integration apparatus, including pond body, the pond body Sequentially connected anaerobic zone 1, mud-water separating area I2, aerobic zone 3, mud-water separating area II4, anoxic zone 5, rear aeration zone 6 and muddy water Separation area II I7, the anaerobic zone 1 are connect with water inlet pipe 8, and mud-water separating area III7 is connect with outlet pipe 17, anoxic zone 5 and mud Water Disengagement zone I2 surmounts pipe 14 by muddy water mixed solution and connects, and muddy water mixed solution surmounts pipe 14 and refers in mud-water separating area I2 Muddy water does not enter aerobic zone 3 and enters directly into more next stage anoxic zone 5；Denitrifying Phosphate Accumulating Organisms are lacking in mud mixture Oxygen condition realizes the synchronous dephosphorization of denitrification denitrogenation by electron acceptor of nitrate；Mud-water separating area II4 and aerobic zone 3 pass through muddy water Separation area II mud return line 15 connects；Mud-water separating area III7 and anaerobic zone 1 pass through mud-water separating area III mud return line 16 Connection, so that the precipitating sludge in mud-water separating area II4, mud-water separating area III7 is back to aerobic zone 3 and anaerobic zone 1 respectively, It realizes that Denitrifying Phosphate Accumulating Organisms and nitrobacteria growth in sludge separate the two bacterium in different zones, while can effectively remove Sludge in mud-water separating area II4, mud-water separating area III7；Preferably, mud-water separating area II mud return line 15 and muddy water point It is provided with valve from area's III mud return line 16, the regurgitant volume of sludge is controlled, and when a jam does occur, valve can be closed It is rebuild, it is easy to maintenance.

Sewage enters anaerobic zone 1 from water inlet pipe 8 and carries out anaerobic phosphorus release, carries out mud-water separation, mud in mud-water separating area I2 Mud mixture in the I2 of water Disengagement zone enters directly into anoxic zone 5 and carries out the synchronous dephosphorization of denitrification denitrogenation, then enters back into Aeration zone 6 afterwards, enter eventually into mud-water separating area III7, the precipitating sludge in mud-water separating area III7 be back to anaerobic zone 1 into Row circulation；Sewage in mud-water separating area I2 enters aerobic zone 3, enters back into mud-water separating area II4, mud-water separating area II4 Interior precipitating sludge is back to aerobic zone 3, and the Denitrifying Phosphate Accumulating Organisms and nitrobacteria growth in realization sludge are in different zones, separation The two bacterium, while the precipitating sludge in mud-water separating area II4, mud-water separating area II7, mud-water separating area can be effectively removed Excess sludge in II4 and mud-water separating area III7 is exhausted by sludge pump 12；It is multiple that such circulate operation realizes carbon source step With, solve the problems, such as carbon source deficiency, without in addition investment carbon source；And at the same time improving the denitrogenation dephosphorizing efficiency of sewage；It is aerobic Bottom is provided with aerator 13 in bottom and rear aeration zone 6 in area 3, by aeration pump 18 respectively to aerobic zone 3 and rear aeration Area 6 carries out offer oxygen, guarantees the abundance of oxygen, so that the bacterial reaction in sludge is abundant；Treated water is through outlet pipe 17 Discharge.The experiment proved that hydraulic retention 26 hours in pond body described in the present embodiment, processing sewage ability is 20m³/ d, significantly Improve sewage treating efficiency.

Embodiment 2

Substantially with embodiment 1, it is preferred that composite filling 9 is provided in the anaerobic zone 1, heat dissipation performance is high, and resistance is small, Water distribution, gas distribution performance are good；It is provided with inclined tube filler 10 in three mud-water separating areas, the dirt generated in three mud-water separating areas Mud settling property is good, is conducive to the removal of sludge below, and reduces occupied area, is enterprise's save the cost；Aerobic zone 3 lacks It is provided with MBBR filler 11 in oxygen area 5 and rear aeration zone 6, substantially increases the biomass of filtrate, improves removal rate, is handled Afterwards effluent quality be better than level-one A, and make it have coupling stepwise muddy water reactor and biomembrane cascade reaction function and It does not need to add the two reactors, saves equipment so that cost reduces；Aerobic zone 3, anoxic zone 5 and rear aeration zone 6 three The fill volume of MBBR filler 11 accounts for the 1/3 of each area's volume in a area, less than the 1/3 of Domain Volume, can MBBR be filled out Material 11, with sludge insufficient contact, influences the separation of entire muddy water in region.

Embodiment 3

Basic embodiment 2 simultaneously, it is preferred that be provided with MBBR filler in aerobic zone 3, anoxic zone 5 and rear aeration zone 6 11, the biomass of filtrate is substantially increased, removal rate is improved, effluent quality is better than level-one A after processing, and makes it have coupling The function of stepwise muddy water reactor and biomembrane cascade reaction is closed without adding the two reactors, save equipment to So that cost reduces；The fill volume of MBBR filler 11 accounts for each area in aerobic zone 3, anoxic zone 5 and the area of rear aeration zone 6 three 1/2, the MBBR filler 11 of volume contacts the removal rate for sufficiently effectively improving sludge with sludge, if the obturation of MBBR filler 11 Product is greater than the 1/2 of each area's volume, will cause the waste of MBBR filler 11, greatly increases cost, and muddy water is being carried out Doping MBBR filler 11 is easy when reflux or discharge.

Embodiment 4

Substantially with embodiment 1, it is preferred that further include groove, bottom and rear aeration zone is arranged in aerobic zone 3 in the groove Bottom in 6 is provided with aerator 13 in groove, effectively prevents aerator 13 during the work time and move, and work is unstable Fixed situation occurs；The upper end of groove is provided with end casing, and the surrounding of end casing is provided with waterproof sealing layer, so that aerator 13 It is protected, effectively prevents sludge or water enters in aerator 13 use for influencing aerator 13, improve aerator 13 Service life；Preferably, the aerator 13 is micro-hole aerator, and uniformly, coefficient of oxygen utilization is high, and low energy consumption for oxygen supply；Micro-pore aeration Device includes horizontally disposed micropore aeration pipe, the central tube of vertical micropore aeration pipe, and the aeration pump 18 being connected with central tube is micro- It is provided with solarization air cap on the aeration tube of hole, is combined by multi-group micropores aeration tube with central tube and improves aeration efficiency, micro-pore aeration Pipe is horizontally disposed to effectively prevent micro-pore aeration blockage；It is provided with protective cover on the solarization air cap, effectively prevents sludge entrance The blocking aeration hole into solarization air cap improves the service life of solarization air cap.

Example described in the utility model is only that preferred embodiments of the present invention are described, not to this reality It is defined with novel conception and scope, under the premise of not departing from the design concept of the utility model, this field engineering technology people The various changes and improvements that member makes the technical solution of the utility model, should all fall into the protection scope of the utility model.

Claims (10)

1. a kind of step carbon utilize intensified denitrification and dephosphorization integration apparatus, it is characterised in that: including pond body, the pond body include according to Anaerobic zone (1), mud-water separating area I (2), aerobic zone (3), mud-water separating area II (4), anoxic zone (5), rear aeration zone of secondary connection (6) it is connect with mud-water separating area III (7), the anaerobic zone (1) with water inlet pipe (8), mud-water separating area III (7) and outlet pipe (17) it connects, anoxic zone (5) surmount pipe (14) by muddy water mixed solution with mud-water separating area I (2) and connect, aerobic zone (3) interior bottom Portion and rear aeration zone (6) interior bottom are provided with aerator (13).

2. a kind of step carbon according to claim 1 utilizes intensified denitrification and dephosphorization integration apparatus, it is characterised in that: described It is provided with composite filling (9), is provided in three mud-water separating areas inclined tube filler (10) in anaerobic zone (1), aerobic zone (3), MBBR filler (11) are provided in anoxic zone (5) and rear aeration zone (6).

3. a kind of step carbon according to claim 2 utilizes intensified denitrification and dephosphorization integration apparatus, it is characterised in that: aerobic The fill volume of MBBR filler (11) accounts for the 1/3 of each area's volume in area (3), anoxic zone (5) and the area of rear aeration zone (6) three ~1/2.

4. a kind of step carbon according to claim 1 utilizes intensified denitrification and dephosphorization integration apparatus, it is characterised in that: also wrap Groove is included, the groove setting is provided with aerator in aerobic zone (3) interior bottom and rear aeration zone (6) interior bottom, groove (13)。

5. a kind of step carbon according to claim 4 utilizes intensified denitrification and dephosphorization integration apparatus, it is characterised in that: groove Upper end be provided with end casing, the surrounding of end casing is provided with waterproof sealing layer.

6. a kind of step carbon according to claim 1 or 4 utilizes intensified denitrification and dephosphorization integration apparatus, it is characterised in that: The aerator (13) is micro-hole aerator.

7. a kind of step carbon according to claim 6 utilizes intensified denitrification and dephosphorization integration apparatus, it is characterised in that: described Micro-hole aerator includes horizontally disposed micropore aeration pipe, the central tube of vertical micropore aeration pipe, the exposure being connected with central tube Air pump (18) is provided with solarization air cap on micropore aeration pipe.

8. a kind of step carbon according to claim 7 utilizes intensified denitrification and dephosphorization integration apparatus, it is characterised in that: described Protective cover is provided on solarization air cap.

9. a kind of step carbon according to claim 1 utilizes intensified denitrification and dephosphorization integration apparatus, it is characterised in that: muddy water Separation area II (4) and aerobic zone (3) are connect by mud-water separating area II mud return line (15), mud-water separating area III (7) with detest Oxygen area (1) is connected by mud-water separating area III mud return line (16).

10. a kind of step carbon according to claim 9 utilizes intensified denitrification and dephosphorization integration apparatus, it is characterised in that: mud Water separation area II mud return line (15) and mud-water separating area III mud return line (16) are provided with valve.