CN104445830B - A kind of A3/ O-MBBR integrated sewage treating apparatus and sewage water treatment method - Google Patents
A kind of A3/ O-MBBR integrated sewage treating apparatus and sewage water treatment method Download PDFInfo
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- CN104445830B CN104445830B CN201410777913.4A CN201410777913A CN104445830B CN 104445830 B CN104445830 B CN 104445830B CN 201410777913 A CN201410777913 A CN 201410777913A CN 104445830 B CN104445830 B CN 104445830B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
Abstract
The present invention relates to technical field of sewage, be specially a kind of A3/ O-MBBR integrated sewage treating apparatus and sewage water treatment method.The present invention by arrange sludge reflux mechanism, nitrification liquid backflow mechanism and anaerobism liquid backflow mechanism, and in Aerobic Pond, fill floating stuffing so that integrated sewage treating apparatus is to the nitrogen in sewage, phosphorus high treating effect, and treatment effeciency is high, and compact conformation, floor space is little.Additionally, the present invention is by optimizing the sedimentation tank structure in integrated sewage treating apparatus, the sedimentation effect that improve sedimentation tank is good, and can substantially reduce Mud up-floating phenomenon and go out the content of aqueous suspension.Sewage is after integrated sewage treating apparatus of the present invention processes, and water outlet is up to " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A standard.
Description
Technical field
The present invention relates to technical field of sewage, particularly relate to a kind of A3/ O-MBBR integrated sewage treating apparatus and sewage water treatment method.
Background technology
Along with the development of China's economic society, water resources crisis and water environment pollution increasingly sharpen, the discharge capacity of all kinds of sewage/waste water is significantly increased, serious threat water body environment, it has also become one of focus that field of Environment Protection is paid close attention to both at home and abroad.Since " 12 ", national intensive appearance multinomial environmental protection and treatment relevant policies, its center of gravity is progressively turned to villages and small towns comprehensive environmental improvement transfer by industry, municipal pollution treatment, and villages and small towns sewage disposal has become the environmental issue needing solution badly.In conjunction with China's domestic sewage in rural areas production distribution dispersion, with a varied topography, pipe network covering imperfection, the features such as the water yield is unstable, thus be not suitable for using the centralized processing of traditional wastewater treatment plant, and there is flexible, easy and efficient integrated sewage treating apparatus and arise at the historic moment.The Technology development that existing integrated sewage treating apparatus is used oneself tend to ripe, play a positive role to controlling villages and small towns water environment pollution, but the most relatively low to the nutrient removal rate such as nitrogen, phosphorus so that the water body such as lake, reservoir deteriorates increasingly, body eutrophication problem is the most prominent.Additionally, existing integrated sewage treating apparatus there is also the deficiency that floor space is big and energy consumption is high.
Moving bed biological film sewage treatment device (Moving Bed Biofilm Reactor, it is called for short MBBR) it is by adding a number of suspending carrier in sewage-treatment plant, improve the Biomass in sewage-treatment plant and biological species, thus improve the treatment effeciency of sewage-treatment plant.Although MBBR has the features such as volumetric loading is high, resistance to impact is strong, but this technique is the highest to the clearance of total nitrogen, total phosphorus, it is impossible to fundamentally solving water pollutes " eutrophication " problem, can only delay water pollution trend.In order to prevent the aggravation of body eutrophication, water outlet total nitrogen and total phosphorus concentration need to maintain in relatively low scope, hence it is imperative that a kind of easy operation, effective, the treatment technology of low cost and equipment.
Summary of the invention
The present invention is directed to existing integrated sewage treating apparatus floor space big, energy consumption is high and to nitrogen, the problem of phosphorus poor processing effect, it is provided that a kind of floor space is little, to nitrogen, phosphorus high treating effect, the A that treatment effeciency is high3/ O-MBBR integrated sewage treating apparatus, and corresponding sewage water treatment method.
For achieving the above object, the present invention is by the following technical solutions:
A kind of A3/ O-MBBR integrated sewage treating apparatus, including the pre-denitration pond, anaerobic pond, anoxic pond, Aerobic Pond, sedimentation tank and the clear water reserviors that are sequentially communicated；Described Aerobic Pond is filled with floating stuffing；Sludge reflux mechanism it is provided with between described sedimentation tank and anaerobic pond；Be provided with between described Aerobic Pond and anoxic pond nitrification liquid backflow mechanism；Be provided with between described anaerobic pond and pre-denitration pond anaerobism liquid backflow mechanism.
Preferably, described anoxic pond includes the first anoxic pond and the second anoxic pond, and described nitrification liquid backflow mechanism is located between Aerobic Pond and the second anoxic pond.
Preferably, be provided with between described first anoxic pond and anaerobic pond anoxia liquid backflow mechanism.
Described sedimentation tank includes that sedimentation tank cell body, the first side wall of described sedimentation tank cell body are provided with water inlet, and the second sidewall of sedimentation tank cell body is provided with outlet, is additionally provided with the first baffle plate and second baffle in described sedimentation tank cell body；The top of described first baffle plate and second baffle is higher than the high liquid level (HLL) position of sedimentation tank cell body, and the bottom of the first baffle plate is less than the bottom of second baffle；Region between described first baffle plate and the first pool wall in opposite directions is inhalant region, region between described second baffle and the second pool wall in opposite directions is exhalant region, region between first baffle plate and second baffle is settling zone, and inhalant region, settling zone, exhalant region are interconnected in the lower section of the first baffle plate and second baffle.
The bottom of described second baffle is positioned at the lower section of outlet, and the distance of the high liquid level (HLL) position of the bottom of second baffle and sedimentation tank cell body is 15-30cm.
The bottom of described sedimentation tank cell body is provided with taper sludge bucket.Preferably, the bottom of described sedimentation tank cell body is provided with two taper sludge buckets.
Being provided with a water distributor in described inhalant region, the tube wall of described water distributor is provided with apopore；Arranging a water inlet pipe through water inlet, one end of described water inlet pipe connects with water distributor.
Described water outlet is provided with an effluent weir.
The volume of described inhalant region is the 5-10% of sedimentation tank cell body total measurement (volume).
The volume of described exhalant region is the 1-3% of sedimentation tank cell body total measurement (volume).
The mud import of described sludge reflux mechanism is connected with the bottom of taper sludge bucket.
In described Aerobic Pond, the packing ratio of floating stuffing is 0.25-0.5.
Described floating stuffing is polyethylene carrier or sponge filler or modification biological filler.
The above-mentioned A of a kind of application3/ O-MBBR integrated sewage treating apparatus processes the method for sewage, makes sewage flow through pre-denitration pond, anaerobic pond, anoxic pond, Aerobic Pond and sedimentation tank successively and processes；Part of contaminated water in described anaerobic pond is back in pre-denitration pond；Part of contaminated water in described Aerobic Pond is back in anoxic pond；The partial sludge being precipitated out in described sedimentation tank is back in anaerobic pond, and the sewage precipitated through sedimentation tank then enters in clear water reserviors；Described Aerobic Pond is filled with floating stuffing.
Described anoxic pond includes the first anoxic pond and the second anoxic pond, and the part of contaminated water in described Aerobic Pond is back in the second anoxic pond.
Part of contaminated water in described first anoxic pond is back in anaerobic pond.
Compared with prior art, the invention has the beneficial effects as follows: the present invention by arrange sludge reflux mechanism, nitrification liquid backflow mechanism and anaerobism liquid backflow mechanism, and in Aerobic Pond, fill floating stuffing, make integrated sewage treating apparatus to the high treating effect of nitrogen, phosphorus in sewage, treatment effeciency is high, and compact conformation, floor space is little.Additionally, the present invention is by optimizing the sedimentation tank structure in integrated sewage treating apparatus, the sedimentation effect that improve sedimentation tank is good, and can substantially reduce Mud up-floating phenomenon and go out the content of aqueous suspension.
Nitrogen pollutant (mainly ammonia nitrogen) in sewage is converted into nitrate nitrogen through Nitrification in Aerobic Pond, and Nitrification has simply converted the form of nitrogen, the most really remove the nitrogen in sewage, so that nitrate nitrogen is converted into nitrogen by Denitrification, ensure that the total nitrogen in water outlet is up to standard, the present invention by being back in the second anoxic pond carry out anoxic denitrification effect by the nitrate nitrogen in Aerobic Pond, and by the denitrification dephosphorization effect of the first anoxic pond, nitrate nitrogen is converted into nitrogen and removes.
Phosphorus in sewage is mainly removed by the effect of Denitrifying Phosphate Accumulating Organisms, Denitrifying Phosphate Accumulating Organisms under anaerobic condition can excess by the phosphorus suction body in sewage, internal phosphorus content is made to exceed the several times of the phosphorus content in general bacterial body, Denitrifying Phosphate Accumulating Organisms in the present invention mainly by the liquid in the first anoxic pond is back in anaerobic pond formed anaerobic/anoxic alternate run environment domestication draw, Denitrifying Phosphate Accumulating Organisms transfers phosphorus at anaerobic state, absorb in sewage substantial amounts of Organic substance simultaneously and be stored in internal, after entering anaerobic environment, with NO3 -For electron acceptor, using the carbon source material of internal storage as electron donor, Denitrifying Phosphate Accumulating Organisms completes denitrification denitrogenation and the absorption of excess phosphorus simultaneously, nitre state salt (mainly nitrate) is converted into nitrogen effusion water body, phosphate is then by Denitrifying Phosphate Accumulating Organisms excessive consumption and in form of a sludge outside discharger, thus reaches the purpose of dephosphorization denitrogenation.
By arranging the first baffle plate and second baffle in sedimentation tank cell body, sedimentation tank is divided into inhalant region, settling zone and exhalant region, sewage is after the water inlet of sedimentation tank enters sedimentation tank, sewage from top to bottom moves and in the inflow settling zone, lower section of the first baffle plate at inhalant region, lower section through second baffle flows into exhalant region the most again, the bottom up motion of sewage oblique second baffle in settling zone, most of particulate matter in sewage sinks because of action of gravity, sewage moves upward after flowing into exhalant region, in sewage, the particulate matter of residual precipitates further, thus improve the sedimentation effect of sedimentation tank, reduce the water outlet concentration of suspension of sedimentation tank.Meanwhile, the high liquid level (HLL) position higher than sedimentation tank, the top of second baffle is set, can stop that on liquid level, mud scum that may be present flows into exhalant region, ensures the treatment effect of sedimentation tank.Bottom and the outlet 15-30cm apart of second baffle are set, when both can prevent liquid fluctuating, part mud scum was by entering exhalant region below liquid level, can make again have the biggest difference in height bottom the first baffle bottom and second baffle, increase the distance that sewage moves upward, improve sedimentation effect.Taper sludge bucket is set in the bottom of sedimentation tank, the mud being precipitated out can be made more to concentrate and be easier to discharge from the bottom of taper sludge bucket, reducing the dead angle of settled sludge.Two taper sludge buckets are set bottom sedimentation tank, the taper surface of the space inner conical sludge bucket at formed objects can be made more to tilt, it is easier to mud is discharged, reduce the generation of deposition.Sewage flows into inhalant region again through water distributor, sewage can be made to flow in inhalant region with the form in face, improve settlement of sewage effect.
The present invention is by by A3/ O technique is combined with MBBR, introduces denitrification synchronous denitrogen dephosphorus technology, improve MBBR go to denitrogenate, the ability of phosphorus.Using combined stuffing and floating stuffing to provide microorganism attachment place, in reactor, microbe species and quantity are greatly improved, thus reduce sewage residence time in systems, reduce the floor space of integrated sewage treating apparatus.Use air-lift device to carry out nitrification liquid backflow, the backflow of anaerobism liquid and the backflow of anoxia liquid, it is possible to decrease system energy consumption, save operating cost.
Accompanying drawing explanation
Fig. 1 is the A of embodiment 13The schematic diagram of each cell body putting position in/O-MBBR integrated sewage treating apparatus；
Fig. 2 is the A of embodiment 13Pre-denitration pond in/O-MBBR integrated sewage treating apparatus, anaerobic pond and the structural representation of anaerobism liquid backflow mechanism；
Fig. 3 is the A of embodiment 13Sedimentation tank and the schematic diagram of sludge reflux mechanism in/O-MBBR integrated sewage treating apparatus；
Fig. 4 is the A of embodiment 23The schematic diagram of each cell body putting position in/O-MBBR integrated sewage treating apparatus；
Fig. 5 is the structural representation of the sedimentation tank in the integrated sewage treating apparatus of comparative example 2.
Detailed description of the invention
In order to more fully understand the technology contents of the present invention, below in conjunction with specific embodiment technical scheme it is described further and illustrates.
Embodiment 1
With reference to Fig. 1-3, a kind of A that the present embodiment provides3/ O-MBBR integrated sewage treating apparatus, including the pre-denitration pond 110, anaerobic pond 120, anoxic pond 130, Aerobic Pond 140, sedimentation tank 150 and the clear water reserviors 160 that are sequentially communicated, and equipment room 170, sludge reflux mechanism, nitrification liquid backflow mechanism, anaerobism liquid backflow mechanism, ultraviolet sterilizer and blower fan.
Pre-denitration pond 110, anaerobic pond 120, anoxic pond 130 and the outlet of Aerobic Pond 140 and water inlet all diagonal angles in vertical direction are arranged (as the water inlet in pre-denitration pond 110 is located at above the pool wall in the upper right corner, pre-denitration pond 110 as shown in Figure 1, outlet is then located at below the pool wall in the lower left corner, pre-denitration pond 110, and other three cell body are by that analogy).Sedimentation tank 150 and the outlet of clear water reserviors 160 and water inlet diagonal angle the most in horizontal direction arranges (as the water inlet of sedimentation tank is located at above the pool wall in sedimentation tank 150 lower left corner as shown in Figure 1, outlet is then located at above the pool wall in sedimentation tank 150 upper right corner).Further, arranging a water pipe being connected with outlet in clear water reserviors 160, this water pipe extends the bottom of outlet, prevents short stream.By water inlet pipe 111, outside sewage is sent in pre-denitration pond 110 by the water inlet in pre-denitration pond 110, by outlet pipe 161, the water of clear water reserviors 160 is exported the outside to clear water reserviors 160 by the outlet of clear water reserviors 160.Ultraviolet sterilizer installed by the outlet pipe 161 of clear water reserviors 160, the most finally discharges after making water sterilized.
It is filled with floating stuffing in Aerobic Pond 140, described floating stuffing is made up of modified polymer material, if Taylor's garland etc. is (in other embodiments scheme, described floating stuffing can also is that at least one in polyethylene carrier, sponge filler and modification biological filler), the packing ratio of floating stuffing is the 0.25-0.5 ratio of the volume of Aerobic Pond 140 (volume of floating stuffing with).And being provided with aeration tube in Aerobic Pond 140, aeration tube is then connected with blower fan, blower fan air, blower fan is provided to be installed in equipment room 170.
Combined stuffing it is hung with respectively in pre-denitration pond 110, anaerobic pond 120 and anoxic pond 130, the structure of described combined stuffing is to be fixed on by multiple plastic hoops on an axial cord, then hydroformylation fiber or dacron thread are pressed on the ring of ring, make fibre bundle be uniformly distributed；Inner ring is flakes plastics branch.
The first air-lift device it is provided with in anaerobic pond 120, this first air-lift device includes the first riser 181 and the first air inlet pipe 182, the import of the first riser 181 extends near the outlet of anaerobic pond 120, the outlet of the first riser 181 then extends near the water inlet in pre-denitration pond 110, one end of first air inlet pipe 182 connects with the first riser 181, and it is connected to the vicinity (if junction is from import department 3-20cm) of the first riser 181 import, the other end of the first air inlet pipe 182 then blower fan with equipment room 170 is connected, by blower fan, air is sent in the first riser 181, make the anaerobism liquid in anaerobic pond 120 be able to by the first riser 181 to be back in pre-denitration pond 110, thus composition anaerobism liquid backflow mechanism.
The second air-lift device it is provided with in Aerobic Pond 140, this second air-lift device includes the second riser and the second air inlet pipe, the import of the second riser extends near the outlet of Aerobic Pond 140, the outlet of the second riser then extends near the water inlet of anoxic pond 130, one end of second air inlet pipe connects with the second riser, and it is connected near the import of the second riser (if junction is from import department 3-20cm), the other end of the second air inlet pipe then blower fan with equipment room 170 is connected, by blower fan, air is sent in the second riser, make the nitrification liquid in Aerobic Pond 140 be able to by the second riser to be back in anoxic pond 130, thus composition nitrification liquid backflow mechanism.
Described sedimentation tank 150 includes sedimentation tank cell body and taper sludge bucket, is provided with the first baffle plate 152, second baffle 154, inhalant region, settling zone, exhalant region, water distributor 151, water pipe and effluent weir 153 in sedimentation tank cell body.Described sedimentation tank cell body is cube, a height of 2m.Be arranged side by side two taper sludge buckets in the bottom of sedimentation tank cell body, the upper end-face edge of taper sludge bucket is fixing with the bottom of sedimentation tank cell body to be connected, and thus sedimentation tank cell body and two taper sludge buckets constitute the accommodation space for storing sewage and mud.It is respectively provided with a mud discharging mouth in the bottom of taper sludge bucket, mud valve is installed at mud discharging mouth, described mud valve is electrodynamic valve, for being discharged in time by the mud in taper sludge bucket outside integrated sewage treating apparatus and in sludge reflux mechanism is back to anaerobic pond 120.First gear 152 plate and second baffle 154 are set in parallel in sedimentation tank cell body, the dual-side making the first baffle plate 152 and second baffle 154 is fixed with two pool walls of sedimentation tank cell body respectively and is connected, and make the first baffle plate 152 not contact with the tapered wall of taper sludge bucket with the bottom of second baffle 154, the top simultaneously also setting up the first baffle plate 152 and second baffle 154 is higher than at the high liquid level (HLL) position of sedimentation tank cell body, though the extended high liquid level (HLL) in the top of the first baffle plate 152 and second baffle 154.Additionally, tapered wall 20cm of the taper sludge bucket that the distance from bottom of the first baffle plate 152 is immediately below it, the bottom of second baffle 154 is then positioned at 20cm below at sedimentation tank cell body high liquid level (HLL) position, so that the bottom of the first baffle plate 152 is less than the bottom of second baffle 154.Thus, the region between the first baffle plate 152 and the first pool wall 158 constitutes inhalant region, and the volume of inhalant region is the 5-10% of sedimentation tank cell body total measurement (volume)；Region between second baffle 154 and the second pool wall 159 constitutes exhalant region, and the volume of exhalant region is the 1-3% of sedimentation tank cell body total measurement (volume)；Composition settling zone, region between first baffle plate 152 and second baffle 154；Inhalant region connects in the lower section of the first baffle plate 152 with settling zone, and settling zone connects in the lower section of second baffle 154 with exhalant region.Water inlet through sedimentation tank 150 arranges a water pipe, one end of water pipe is connected with Aerobic Pond 140, the other end of water pipe is connected with the water distributor 151 being located in inhalant region, described water distributor 151 is horizontally disposed with, and arranges a discharge water hole towards bottom sedimentation tank cell body at this water distributor 151 on the tube wall of one side.Sewage flows into water distributor 151 by water pipe, then flows into inhalant region from apopore, and sewage from top to bottom moves in inhalant region.Arranging water distributor 151 can make sewage flow in inhalant region with the form in face, improves settlement of sewage effect.The outlet of sedimentation tank 150 is located at sedimentation tank cell body high liquid level (HLL) position slightly below, and arranges an effluent weir 153 at water outlet, and the sewage after sedimentation tank 150 processes is flowed in clear water reserviors 160 by outlet.A sludge reflux mechanism it is additionally provided with in the bottom of sedimentation tank cell body, this sludge reflux mechanism includes that the first mud import 155 and the second mud import 156, the first mud import 155 and the second mud import 156 are passed through the pipeline mud discharging mouth respectively with two taper sludge buckets and be connected.The two mud import finally converges to form a total pipeline 157 together by pipeline, carries mud for anaerobic pond 120.
When using this sedimentation tank 150 that sewage is carried out precipitation process, sewage flows into inhalant region via the apopore on water distributor 151 and from top to bottom moves in inhalant region, passes the inflow settling zone, space below the first baffle plate 152 after flowing to the bottom of inhalant region.The sewage left bottom in settling zone moves to the bottom of second baffle 154 to upper right side, settling zone, sewage is during settling zone is in motion obliquely, particulate matter in sewage is the most then to sinking, particulate matter is contrary with the direction of motion of water, thus improves the separating effect of particulate matter and water.Sewage moves to the bottom of second baffle 154 and enters exhalant region, from bottom to top moves at exhalant region, then through effluent weir 153, flow to clear water reserviors 160 from outlet.The granule precipitated constitutes mud, is gathered in taper sludge bucket, and the mud in taper sludge bucket is then discharged by the mud discharging mouth bottom taper sludge bucket.In lasting settlement of sewage processes, can produce mud scum in a small amount unavoidably, second baffle 154 then by mud scum shelves on the liquid level of settling zone, thus can ensure effluent characteristics, reduces the suspension content in water outlet.
In other embodiments, the distance that also can arrange the bottom of second baffle 154 and the high liquid level (HLL) position of sedimentation tank cell body is 15-30cm, and oblique second sidewall in bottom that second baffle 154 can be set, to increase the volume of settling zone, thus improve sedimentation effect further, the height of sedimentation tank cell body also visual actual design needs and changes, and it is highly not limited to 2m.Water in clear water reserviors can also use the mode adding disinfectant to carry out disinfection.
The method of sewage disposal is: is sent in pre-denitration pond 110 by the water inlet in pre-denitration pond 110 by outside sewage by water inlet pipe 111, then makes sewage flow through pre-denitration pond 110, anaerobic pond 120, anoxic pond 130, Aerobic Pond 140 and sedimentation tank 150 successively and process；Part of contaminated water in anaerobic pond 120 through anaerobism liquid backflow mechanism be back in pre-denitration pond 110；Part of contaminated water in Aerobic Pond 140 through nitrification liquid backflow mechanism be back in anoxic pond 130；The partial sludge being precipitated out in sedimentation tank 150 is in sludge reflux mechanism is back to anaerobic pond 120, and the sewage precipitated through sedimentation tank 150 then enters in clear water reserviors 160.Water in clear water reserviors 160 is discharged after being installed in the sterilization of the ultraviolet sterilizer on outlet pipe 161.
In above-mentioned each backflow mechanism, anaerobism liquid reflux ratio is 100-200%, and mixed liquid recycle ratio is 100-200%, and return sludge ratio is 50-100%.(reflux ratio refers to the capacity of returns of backflow and the ratio of the liquid inlet volume flowed into by water inlet.)
Embodiment 2
With reference to Fig. 4, a kind of A that the present embodiment provides3/ O-MBBR integrated sewage treating apparatus, its structure and the A described in embodiment 13/ O-MBBR integrated sewage treating apparatus is essentially identical, and difference is: the anoxic pond in embodiment 1 be divided into two, and i.e. at centre dividing plate, anoxic pond is separated into the first anoxic pond 231 and the second anoxic pond 232.In the upper left corner of dividing plate, one connected entrance is set, and a water pipe being connected with the water inlet of the first anoxic pond 231 is set in the first anoxic pond 231, this water pipe extends bottom the cell body in first anoxic pond 231 lower right corner as shown in Figure 4, makes the water inlet position in the first anoxic pond 231 arrange with the diagonal angle that water exit position is vertical direction.
A3In/O-MBBR integrated sewage treating apparatus, pre-denitration pond 210, anaerobic pond the 220, first anoxic pond the 231, second anoxic pond 232, Aerobic Pond 240, sedimentation tank 250 and clear water reserviors 260 are sequentially communicated.Additionally, refluxed by nitrification liquid, mechanism is located between Aerobic Pond 240 and the second anoxic pond 232, and set up between the first anoxic pond 231 and anaerobic pond 220 anoxia liquid backflow mechanism.
The method of sewage disposal is: is sent in pre-denitration pond 210 by the water inlet in pre-denitration pond 210 by outside sewage by water inlet pipe 211, then makes sewage flow through pre-denitration pond 210, anaerobic pond the 220, first anoxic pond the 231, second anoxic pond 232, Aerobic Pond 240 and sedimentation tank 250 successively and process；Part of contaminated water in anaerobic pond 220 through anaerobism liquid backflow mechanism be back in pre-denitration pond 210；Part of contaminated water in first anoxic pond 231 through anoxia liquid backflow mechanism be back in anaerobic pond 220；Part of contaminated water in Aerobic Pond 240 through nitrification liquid backflow mechanism be back in the second anoxic pond 232；The partial sludge being precipitated out in sedimentation tank 250 is in sludge reflux mechanism is back to anaerobic pond 220, and the sewage precipitated through sedimentation tank 250 then enters in clear water reserviors 260.Water in clear water reserviors 260 is discharged after being installed in the sterilization of the ultraviolet sterilizer on outlet pipe 261.
In above-mentioned each backflow mechanism, anaerobism liquid reflux ratio is 100-200%, and anoxia liquid reflux ratio is 100-200%, and mixed liquid recycle ratio is 100-200%, and return sludge ratio is 50-100%.
Comparative example 1
A kind of integrated sewage treating apparatus that this example provides, its structure and the A described in embodiment 13/ O-MBBR integrated sewage treating apparatus is essentially identical, and difference is: cancel anaerobism liquid backflow mechanism, nitrification liquid backflow mechanism and the sludge reflux mechanism in embodiment 1.In integrated sewage treating apparatus, pre-denitration pond, anaerobic pond, anoxic pond, Aerobic Pond, sedimentation tank and clear water reserviors are sequentially communicated.
The method of sewage disposal is: makes sewage flow through pre-denitration pond, anaerobic pond, anoxic pond, Aerobic Pond and sedimentation tank successively and processes；The sewage precipitated through sedimentation tank then enters in clear water reserviors.Water in clear water reserviors is discharged after the ultraviolet sterilizer sterilization through being installed on outlet pipe.
Comparative example 2
A kind of integrated sewage treating apparatus that this example provides, its structure and the A described in embodiment 13/ O-MBBR integrated sewage treating apparatus is essentially identical, and difference is: the structure of sedimentation tank is different.Sedimentation tank in this example is as shown in Figure 5, one sidewall of this sedimentation tank is provided with water inlet, is provided with outlet on another sidewall in opposite directions, and the water inlet through sedimentation tank arranges a water pipe, water pipe extends the bottom of sedimentation tank, and its volume is identical with the volume of the sedimentation tank described in embodiment 1.
The method of sewage disposal is: makes sewage flow through pre-denitration pond, anaerobic pond, anoxic pond, Aerobic Pond and sedimentation tank successively and processes；The sewage precipitated through sedimentation tank then enters in clear water reserviors.Water in clear water reserviors is discharged after the ultraviolet sterilizer sterilization through being installed on outlet pipe.
Use above-described embodiment 1-2 to process the sewage at identical water source with the integrated sewage treating apparatus of comparative example 1-2 respectively, detect the indices of each integrated sewage treating apparatus water outlet the most respectively.Testing result is as shown in the table.
From upper table data, sewage is through the A of embodiment 1 and 23After/O-MBBR integrated sewage treating apparatus processes, water outlet situation substantially good than comparative example 1 and 2, and the A of embodiment 23Good than embodiment 1 of the treatment effect of/O-MBBR integrated sewage treating apparatus.
Only further illustrating the technology contents of the present invention described on embodiment, in order to reader is easier to understand, but do not represent embodiments of the present invention and be only limitted to this, any technology done according to the present invention extends or recreation, is all protected by the present invention.
Claims (9)
1. an A3/ O-MBBR integrated sewage treating apparatus, including the pre-denitration pond being sequentially communicated, detests
Oxygen pond, anoxic pond, Aerobic Pond, sedimentation tank and clear water reserviors, it is characterised in that: described Aerobic Pond is filled
There is floating stuffing；Sludge reflux mechanism it is provided with between described sedimentation tank and anaerobic pond；Described Aerobic Pond is with scarce
Be provided with between oxygen pond nitrification liquid backflow mechanism；The backflow of anaerobism liquid it is provided with between described anaerobic pond and pre-denitration pond
Mechanism；Described sedimentation tank includes sedimentation tank cell body, be additionally provided with in described sedimentation tank cell body the first baffle plate and
Second baffle；The top of described first baffle plate and second baffle is higher than the high liquid level (HLL) position of sedimentation tank cell body,
The bottom of the first baffle plate is less than the bottom of second baffle；Between described first baffle plate and the first pool wall in opposite directions
Region be inhalant region, the region between described second baffle and the second pool wall in opposite directions is exhalant region,
Region between one baffle plate and second baffle is settling zone, and inhalant region, settling zone, exhalant region are in first gear
The lower section of plate and second baffle is interconnected.
A kind of A3/ O-MBBR integrated sewage treating apparatus, its feature exists
Including the first anoxic pond and the second anoxic pond in: described anoxic pond, described nitrification liquid backflow mechanism is located at
Between oxygen pond and the second anoxic pond.
A kind of A3/ O-MBBR integrated sewage treating apparatus, its feature exists
In: be provided with between described first anoxic pond and anaerobic pond anoxia liquid backflow mechanism.
A kind of A3/ O-MBBR integrated sewage treating apparatus, its feature exists
The lower section of outlet it is positioned in: the bottom of described second baffle, and the bottom of second baffle and sedimentation tank pond
The distance of the high liquid level (HLL) position of body is 15-30cm.
A kind of A3/ O-MBBR integrated sewage treating apparatus, its feature exists
In: the bottom of described sedimentation tank cell body is provided with taper sludge bucket.
A kind of A3/ O-MBBR integrated sewage treating apparatus, its feature exists
In: in described Aerobic Pond, the packing ratio of floating stuffing is 0.25-0.5.
7. a sewage water treatment method, make sewage flow through successively pre-denitration pond, anaerobic pond, anoxic pond,
Aerobic Pond and sedimentation tank process, it is characterised in that: the part of contaminated water in described anaerobic pond is back to pre-
In denitration pond；Part of contaminated water in described Aerobic Pond is back in anoxic pond；Described sedimentation tank is settled out
The partial sludge come is back in anaerobic pond, and the sewage precipitated through sedimentation tank then enters in clear water reserviors；Described
Aerobic Pond is filled with floating stuffing.
A kind of sewage water treatment method, it is characterised in that: described anoxic pond
Including the first anoxic pond and the second anoxic pond, the part of contaminated water in described Aerobic Pond is back to the second anoxic pond
In.
A kind of sewage water treatment method, it is characterised in that: described first lacks
Part of contaminated water in oxygen pond is back in anaerobic pond.
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| CN109019835A (en) * | 2018-07-16 | 2018-12-18 | 广州资源环保科技股份有限公司 | One kind being based on A3The sewage water treatment method of/O-BAF technique |
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