CN101723560B - Integrated A/O bacteria filter device for treating dispersed wastewater - Google Patents
Integrated A/O bacteria filter device for treating dispersed wastewater Download PDFInfo
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- CN101723560B CN101723560B CN200910247563XA CN200910247563A CN101723560B CN 101723560 B CN101723560 B CN 101723560B CN 200910247563X A CN200910247563X A CN 200910247563XA CN 200910247563 A CN200910247563 A CN 200910247563A CN 101723560 B CN101723560 B CN 101723560B
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Abstract
The invention relates to an integrated A/O bacteria filter device for treating dispersed wastewater, which has a cylindrical structure in shape. The center of the integrated A/O bacteria filter device is provided with a cylindrical erect flow primary settling tank, a baffle wall is arranged between an inner cylinder body and an outer cylinder body, and a space is divided into an adjusting tank, a hypoxia bacteria filter, an aerobe filter, a clear water tank and a mud storage tank. The aerobe filter and the clear water tank are in a concentric circle arc structure. Wastewater in the adjusting tank is lifted into the primary settling tank through an air lifter, the settled wastewater and recycled nitrification liquor are together distributed into the hypoxia bacteria filter for denitrification, the bottom and the middle part of the hypoxia bacteria filter are provided with backwashing pipelines which can realize subsection washing; the hypoxia bacteria filter is communicated with the bottom of the aerobe filter, the denitrified wastewater overflows from the surface into the clear water tank for outputting after organic matters are removed and nitrification is carried out in the aerobe filter. The backwashing wastewater of the device flows into the adjusting tank per se, and mud in the primary settling tank is lifted into the mud storage tank through the air lifter. The invention has the advantages of less investment, little operation cost, longer mud discharge period and convenient management, thereby being suitable for treating the dispersed wastewater in countryside.
Description
Technical field
The present invention relates to a kind of small-scale sewage processing reaction apparatus, particularly a kind of processing dispersed wastewater integrated A/O bacteria filter device to the rural area dispersant type domestic wastewater.
Background technology
China's domestic sewage in rural areas by using and at present most unprocessed river course that directly enters, the severe contamination water body is one of major reason that causes body eutrophication.Therefore, domestic sewage in rural areas by using is handled very necessity.
Owing to Rural areas resident family disperses, sewage discharge is wide, amount is big, and its collection is focused on needs huge discharge pipe line gathering system, and investment cost is very huge, and therefore centralized WWT pattern is not suitable for processing rural area dispersant type domestic wastewater.And the decentralized type sewage tupe can overcome the some shortcomings of centralized processing pattern, has plurality of advantages: the Infrastructure dependence to sewage network system and complicacy is little, receives ectocine little; Invest lowlyer, the construction period is short, instant effect; Be convenient to the water resources recycling; Be suitable for the low decentralized sewage discharge source of the density of population.Especially in China, rural economy also is not flourishing especially, and utilization decentralized type sewage treatment system can reach the WWT purpose at lower cost.
Aerobic biofilter has the core technology of WWT contact-oxidation pool and feedwater rapid filter concurrently; Have filtration, absorption, biodegradable effect and need aeration, high filtering speed, hold back suspended substance, need characteristics such as regular back flushing; Do not need to establish again second pond after the biological processing unit; General biologic treating technique processing efficiency is higher, and is such responsive unlike activated sludge process to organic loading, hydraulic load, variation of temperature.Through improving for many years; Aerobic biofilter develops into upward flow mode (being the air water concurrent) to stream (like BIOCARBONE) down by early stage, such as BIOFOR
, BIOSTYR
, COLOX
, DeepBed
BIOPUR various ways such as
.Yet aerobic biofilter mainly is distributed in Europe at present, distinguishes beauteously in the application of city domestic sewage treatment plant, and the correlative study of China is later relatively with application, and integral body lags behind advanced international standard.
To the rural decentralized wastewater processing feature; Not enough below the technology existence of existing aerobic biofilter: 1. be directed against research and application wretched insufficiency that the rural area decentralized type sewage is handled, existing patent is to be directed against city domestic sewage or industrial sewage research and development with technology basically; 2. integrated degree is not high.Existing integrated patent research and development concentrate on basically in the pond (unit) and realize aspects such as denitrogenation, dephosphorization technique simultaneously; And preprocessing process such as water quantity and quality adjusting, deposition and sludge handling process etc. are free on outside the integrated apparatus, do not realize integrated on real entire sewage treatment system (whole process) meaning; 3. electricinstallation is more.Processes such as the lifting of the lifting of sewage, aeration, back flushing, mud and processing all need the electrical equipment of characteristics, and power consumption is bigger; 4. back flushing frequency influences processing power and effluent quality.The filter tank is held back SS and COD in the water inlet and is mainly occurred in along the initial 0 ~ 30cm packing layer of the direction of current; This causes, and head loss increases even the filter tank obstruction in the filter tank; Yet when back flushing, carry out back flushing to whole filter tank often, the interception capacity (capacity), back flushing that so not only can not make full use of the filter tank frequently, big with duration, water consumption; And big to established biofilm disruption, influence initial stage effluent quality and system processing power after the back flushing.
Therefore; To the characteristic feature of rural area dispersed wastewater and carry out entire sewage treatment system (process) integrated design; On the basis of optimizing backwash process, system's logistics is realized through airlift; Not only reduce electricinstallation, practiced thrift energy consumption and investment, working cost, also improved the stability of processing power and processing.
Summary of the invention
The objective of the invention is to the water quality and quantity of rural area dispersant type domestic wastewater discharging characteristics, provide that a kind of treatment effect is good, stable, investment and working cost is low, the processing dispersed wastewater integrated A/O bacteria filter device of simple and convenient management.
Processing dispersed wastewater integrated A/O bacteria filter device that the present invention proposes; This device is cylinder-like structure; The device center vertically is provided with a cylinder; Be preliminary sedimentation tank 7, between inside and outside cylindrical shell, be provided with partition wall, it is divided into equalizing tank 11, anoxic biological filter 12, aerobic biofilter 1, clean water basin 3 and storage basin 4; Wherein, anoxic biological filter 12, aerobic biofilter 1 and clean water basin 3 are concentric(al) circles arc structure;
Equalizing tank 11 comprises water inlet pipe 10 and equalizing tank sewage airlift 9, and water inlet pipe 10 is positioned at equalizing tank 11 pool wall tops, with the sewage drainage pipe connection; Equalizing tank sewage airlift 9 comprises that first riser tube 16, first air nozzle 17, first promote tracheae 18, air discharges case 19, venting port 20, rising pipe 21, oil slick scum silica frost retaining pipe 22 and U-shaped water inlet pipe 23; Riser tube 16 and lifting tracheae 18 insert in the equalizing tanks 11; And the top of riser tube 16 is stretched into air and is discharged in the case 19; First promotes tracheae 18 bottoms communicates with first riser tube 16 through first air nozzle 17, and first promotes tracheae 18 upper ends links to each other with gas blower 48, and rising pipe 21 1 ends discharge case 19 with air and link to each other; The other end links to each other with the pipe core 25 of preliminary sedimentation tank 7, and oil slick scum silica frost retaining pipe 22 is enclosed within U-shaped water inlet pipe 23 outsides; Equalizing tank sewage airlift 9 is fixed on the partition wall of 7 of equalizing tank 11 and preliminary sedimentation tanks through pipe collar 24;
Preliminary sedimentation tank 7 comprises pipe core 25, reflector 26, mud airlift 5 and first effluent weir 27, is that reflector 26, the first effluent weirs 27 are positioned at preliminary sedimentation tank 7 tops under the pipe core 25; Mud airlift 5 comprises second riser tube 16, second air nozzle 51 and second promotes tracheae 52; Second riser tube 50 and second promotes tracheae 52 and inserts in the preliminary sedimentation tank 7; And the top of second riser tube 50 links to each other with dredging tube 13, is delivered to the bottom of storage basin 4.Second promotes tracheae 52 bottoms communicates with second riser tube 50 through second air nozzle 51, promotes tracheae 52 upper ends and links to each other with gas blower 48; Mud airlift 5 is fixed on the partition wall of 4 of preliminary sedimentation tank 7 and storage basins through pipe collar 22; First effluent weir 27 links to each other with the water distributor 28 of anoxic biological filter 12;
Anoxic biological filter 12 comprises water distributor 28, epimere filter material layer 29, the first back flushing water pipe 30, the first back flushing tracheae 31, segmentation filter screen 32, hypomere filter material layer 33, supporting layer 34, perforate filter plate 35, the second back flushing water pipe 36, the second back flushing tracheae 37 and back flushing draining riser 38; Water distributor 28 is positioned at 12 tops, anoxic biological filter, plays the effect of water distribution uniformity; The filter material layer of anoxic biological filter 12 is divided into epimere filter material layer 29 and hypomere filter material layer 33 through segmentation filter screen 32; Two sections filter material layers are equipped with back flushing tracheae and back flushing water pipe; To realize segmentation, timesharing back flushing; The first back flushing water pipe 30, the first back flushing tracheae 31 are between epimere filter material layer 29 and hypomere filter material layer 33, and the second back flushing water pipe 36, the second back flushing tracheae 37 are positioned at the lower space of anoxic biological filter 12 perforate filter plates 35; Perforate filter plate 35 is used to carry supporting layer 34 and hypomere filter material layer 33; Back flushing draining riser 38 is positioned at the partition wall upper position of 11 of anoxic biological filter 12 and equalizing tanks, is higher than normal level of liquid, and backwashing wastewater can flow in the equalizing tank 11 certainly;
Be provided with clear water airlift 8 and rising pipe 6 in the clean water basin 3; Phegma airlift 8 comprises the 3rd riser tube 53, the 3rd air nozzle 54 and the 3rd promotes tracheae 55; The 3rd riser tube 53 and the 3rd promotes tracheae 55 and inserts in the clean water basin 3; The 3rd promotes tracheae 55 bottoms communicates with the 3rd riser tube 53 through air nozzle 54; The 3rd promotes tracheae 55 upper ends links to each other with gas blower 48, and the end of riser tube 53 extends above the effluent trough of preliminary sedimentation tank 7, is connected with the 3rd back flushing water pipe 43, the second back flushing water pipe 36, the first back flushing water pipe 30; Phegma airlift 8 is fixed on the partition wall of 1 of clean water basin 3 and aerobic biofilter through pipe collar 24; During not back flushing, the clear water in the clean water basin 3 is back to anoxic biological filter 12 through clear water airlift 8 and carries out denitrification denitrogenation; During back flushing, be used for back flushing through 8 liftings of clear water airlift;
Storage basin 4 side wall upper part are provided with supernatant riser 2, and supernatant reaches after the certain liquid directly overflow to equalizing tank 11.
Among the present invention; Anoxic biological filter 12 and aerobic biofilter 1 all can be selected volcanics biofilter material or clay ceramic grain filter or haydites of book structure filtrate for use, accumulation formula filler---the spherical light ceramic of developing recently such as China Inner Mongol river in Henan Province Fang Tian-volcanics filtrate, Pingxiang, Jiangxi environmental protection company of Canon.
Among the present invention, the particle diameter of filter medium of epimere filter material layer 29 is 4-7mm, and the particle diameter of filter medium of hypomere filter material layer 33 is 1-4mm.
Among the present invention, the particle diameter of filter medium of filter material layer 40 is 1-3mm.
Among the present invention; First promotes tracheae 18, second promotes tracheae the 52, the 3rd and promotes on tracheae 55, the first back flushing tracheae 31, the second back flushing tracheae 37, the 3rd back flushing tracheae 42, the blast main 45 and all be connected with air gate valve and air SV; All be connected with out Water gate valve and go out water solenoid valve on the first back flushing water pipe 30, the second back flushing water pipe 36, the 3rd back flushing water pipe 43, backwashing wastewater relief outlet 47 places are connected with out water solenoid valve.
With existing biological filter compared with techniques, beneficial effect of the present invention is embodied in:
1 integrated design: integrate equalizing tank, preliminary sedimentation tank, anoxic biological filter, aerobic biofilter, clean water basin, storage basin; Truly realize integrated on entire sewage treatment system (whole process) meaning; Compact overall structure; Simplify system pipeline, saved floor space and work material, reduced cost.
The sewage of 2 equalizing tanks promotes, the mud of preliminary sedimentation tank promotes and nitrification liquid refluxes all realizes through airlift; The aeration of aerobic biofilter, airlift and back flushing usefulness gas are all realized supply through a gas blower; Control easily; And greatly reduce electricinstallation, reduce investment and working cost.
3 anoxic of the present invention biological filters, aerobic biofilter and clean water basin are concentric(al) circles arc structure, and water distribution is even, can reduce the dead angle.
4 the present invention are A/O series connection biological filtering tank process, and wherein the employing of A section filter tank is down to streaming, and back flushing is easy after section dirty the obstruction; 0 section is adopted gas, the liquid streaming that rises in the same way, is difficult for stopping up, and backwashing period is long.
5 anoxic of the present invention biological filters are adopted following to streaming, and according to holding back and remove the pollution substance rule, through filter screen anoxic biological filter filtrate are divided into two sections, and the epimere particle diameter of filter medium is big than hypomere, can improve the filter tank contamination capacity, slows down obstruction.Simultaneously, two sections independently are provided with backwash gas, water pipe, can realize segmentation, timesharing back flushing; Flexible operation not only; The backwashing water consumption is little, also makes full use of the retaining power of hypomere filtrate, has avoided back flushing that the biomembranous destruction of hypomere filtrate is influenced effluent quality with undue wash-out.Backwashing wastewater can directly side wall upper part flows into equalizing tank from the filter tank, and is easy to operate.
6 the present invention are provided with storage basin, and sludge discharging period is grown (being half a year), are convenient to management.
7 the present invention can realize commercialization, processing and on-the-spot simple installation, and the civil engineering amount is little, reduced investment.
8 the present invention is directed to rural area decentralized type sewage discharge characteristics and design, and have efficient, low consumption and remove functions such as organism, denitrogenation, and stable, advantages such as the investment working cost is little, simple and convenient management are applicable to that rural decentralized wastewater handles.
Description of drawings
Fig. 1 is for handling dispersed wastewater integrated A/O bacteria filter device vertical view.
Fig. 2 is for handling dispersed wastewater integrated A/O bacteria filter device A-A sectional view.
Fig. 3 is for handling dispersed wastewater integrated A/O bacteria filter device B-B sectional view.
Fig. 4 is the airlift structural representation, and wherein: a is the structural representation of sewage airlift, and b is the structural representation of mud airlift, and c is the structural representation of clear water airlift.
Fig. 5 is the perforate water distribution board, and wherein: a is an anoxic biological filter perforate water distribution board, and b is an aerobic biofilter perforate water distribution board.
Fig. 6 is anoxic pond back flushing water distribution, gas distribution pipe detail drawing.
Fig. 7 is aerobic biofilter water distribution, gas distribution pipe and aeration tube detail drawing.Wherein: a is the aerobic biofilter aeration tube, and b is an aerobic biofilter back flushing gas distribution pipe, c aerobic biofilter back flushing water distributor.
Fig. 8 is for handling dispersed wastewater integrated A/O bacteria filter device process flow sheet.
Label among the figure: 1 is aerobic biofilter, and 2 is the supernatant riser, and 3 is clean water basin, and 4 is storage basin, and 5 is the mud airlift, and 6 is rising pipe; 7 is preliminary sedimentation tank, and 8 is the clear water airlift, and 9 is the sewage airlift, and 10 is water inlet pipe, and 11 is equalizing tank, and 12 is the anoxic biological filter; 13 is dredging tube, and 14 is the water leg vent pipe, and 15 is the nitrification liquid return line, and 16 is first riser tube, and 17 is first air nozzle, and 18 is the first lifting tracheae; 19 for air discharges case, and 20 is venting port, and 21 is rising pipe, and 22 are oil slick scum silica frost retaining pipe, and 23 is the U-shaped water inlet pipe, and 24 is pipe collar; 25 is pipe core, and 26 is reflector, and 27 is effluent weir, and 28 is water distributor, and 29 is the epimere filter material layer, and 30 is the first back flushing water pipe; 31 is the first back flushing tracheae, and 32 are the segmentation filter screen, and 33 is the hypomere filter material layer, and 34 is supporting layer, and 35 are the perforate filter plate; 36 is the second back flushing water pipe, and 37 is the second back flushing tracheae, and 38 are back flushing draining riser, and 39 is water distribution board, and 40 is filter material layer; 41 is supporting layer, and 42 is the 3rd back flushing tracheae, and 43 is the 3rd back flushing water pipe, and 44 is micropore aeration pipe, and 45 is blast main; 46 is effluent weir, and 47 are back flushing draining riser, and 48 is gas blower, and 49 is house steward, and 50 is second riser tube; 51 is second air nozzle, and 52 is the second lifting tracheae, and 53 is the 3rd riser tube, and 54 is the 3rd air nozzle, and 55 is the 3rd lifting tracheae.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described.
Embodiment 1: like Fig. 1-shown in Figure 8, processing dispersed wastewater integrated A/O bacteria filter device that the present invention proposes is a cylinder-like structure, and virtual height is 1.3m, superelevation 0.2m, and height overall 1.9m, diameter are 1.8m.The device center is a little cylinder; Be made as vertical-flow preliminary sedimentation tank 7; Between inside and outside cylindrical shell, be provided with partition wall; From the space, device is divided into equalizing tank 11, preliminary sedimentation tank 7, anoxic biological filter 12, aerobic biofilter 1, clean water basin 3 and storage basin 4, the area ratio is 1: 2: 6: 9.2: 12.2: 19.Wherein, anoxic biological filter 12, aerobic biofilter 1 and clean water basin 3 are concentric(al) circles arc structure.
Equalizing tank 11 comprises water inlet pipe 10, equalizing tank sewage airlift 9.Wherein, water inlet pipe 10 is positioned at the pool wall top of equalizing tank 11, with the sewage drainage pipe connection; Equalizing tank sewage airlift 9 comprises first riser tube 16 (caliber is 32mm), first air nozzle 17, first and promotes tracheae 18 (caliber is 15mm), air and discharge case 19, venting port 20, rising pipe 21 (caliber is 50mm), oil slick scum silica frost retaining pipe 22 (caliber is 70mm), U-shaped water inlet pipe 23 (caliber is 32mm, and water-in height at the bottom of the pond is 0.4m).Wherein, first riser tube 16 and first promotes tracheae 18 parts and places equalizing tank 11, and rising pipe 21 links to each other with the pipe core 25 of preliminary sedimentation tank 7, and first promotes tracheae 17 links to each other with gas blower 48, controls the lifting flow quantity through charge flow rate.Equalizing tank airlift 9 is fixed on through pipe collar 24 on the partition wall of 7 of equalizing tank 11 and preliminary sedimentation tanks apart from 0.3m place, wall top.
Preliminary sedimentation tank 7 comprises that pipe core 25 (caliber is 50mm), reflector 26 (the bottom surface diameter is 70mm), mud airlift 5 and first effluent weir, 27, the first effluent weirs 27 can adopt the V-notch weir form, height of weir, the wide 20mm that is in weir, its water outlet groove width 40mm.Wherein, preliminary sedimentation tank 7 is circular vertical sedimentation basin structure; Mud airlift 5 comprises second riser tube 50, second air nozzle 51, second promotes tracheae 52.Wherein, second riser tube 50 and second promotes tracheae 52 parts and places preliminary sedimentation tank 7, and the top of second riser tube 50 links to each other with dredging tube 13 (caliber is 32mm), is delivered to the bottom of storage basin 4, mouth of pipe 0.1m at the bottom of storage basin 4 ponds.Second air nozzle 51 of the second lifting tracheae, 52 bottoms communicates with second riser tube 50, and second promotes tracheae 52 upper ends links to each other with gas blower 48.Mud airlift 5 is fixed on through pipe collar 24 on the partition wall of 4 of preliminary sedimentation tank 7 and storage basins apart from 0.3m place, wall top; First effluent weir 27 links to each other with the water distributor 28 of anoxic biological filter 12.
Anoxic biological filter 12 comprises water distributor 28 (the main caliber is 32mm, and branch diameter is 15mm, and the perforate aperture is 8mm), epimere filter material layer 29, the first back flushing water pipe 30 (main caliber 25mm; Branch diameter is 15mm; The perforate aperture is 8mm), the first back flushing tracheae 31 (main caliber 20mm, branch diameter are 15mm, and the perforate aperture is 8mm), segmentation filter screen 32 (for stainless steel), hypomere filter material layer 33, supporting layer 34 (high 15cm; Particle diameter of filter medium is 15～20mm), (the perforate aperture is 8mm to perforate filter plate 35; Pitch-row is 30mm), the second back flushing water pipe 36 (main caliber 25mm, branch diameter are 15mm, and the perforate aperture is 8mm), the second back flushing tracheae 37 (main caliber 20mm; Branch diameter is 15mm, and the perforate aperture is 8mm), back flushing draining riser 38 (aperture is 50mm).Wherein, water distributor 28 is positioned at the top of anoxic biological filter 12, plays the effect of water distribution uniformity; Anoxic biological filter 12 filter material layers are divided into two sections through segmentation filter screen 32; The particle diameter of filter medium of epimere filter material layer 29 is 4-7mm; Thickness 25cm, the particle diameter of filter medium of hypomere filter material layer 33 are 1-4mm, thickness 50cm; Two sections filter material layers are equipped with separately independently back flushing tracheae, back flushing water pipe, to realize segmentation, timesharing back flushing; Perforate filter plate 35 is used to carry supporting layer 34 and hypomere filter material layer 33, builds flange in the bottom of pool wall, in order to support filter plate.Back flushing draining riser 38 is positioned at the partition wall upper position of 11 of anoxic biological filter 12 and equalizing tanks, and width between centers wall top 12cm is higher than normal level of liquid, and backwashing wastewater can flow in the equalizing tank 11 certainly.
Be provided with clear water airlift 8 and rising pipe 6 (caliber is 40mm) in the clean water basin 3.Wherein, phegma airlift 8 comprises the 3rd riser tube 53, the 3rd air nozzle the 54, the 3rd promotes tracheae 55 and rising pipe 21 (caliber is 32mm).Wherein, the 3rd riser tube 53 and the 3rd promotes tracheae 55 parts and places the 3rd air nozzle 17 of clean water basin 3, the three lifting tracheaes 18 bottoms to communicate with the 3rd riser tube 16, and the 3rd promotes tracheae 18 upper ends links to each other with gas blower 48.The end of the 3rd riser tube 16 extends above the effluent trough of preliminary sedimentation tank 7, is connected with the 3rd back flushing water pipe 43, the second back flushing water pipe 36, the first back flushing water pipe 30.Phegma airlift 8 is fixed on through pipe collar 24 on the partition wall of 1 of clean water basin 3 and aerobic biofilter apart from 0.3m place, wall top.During not back flushing, the clear water in the clean water basin 3 is back to anoxic biological filter 12 through clear water airlift 8 and carries out denitrification denitrogenation; During back flushing, also be used for back flushing through 8 liftings of clear water airlift.
Storage basin 4 side wall upper part are provided with supernatant riser 2 (aperture is 40mm, apart from top side wall 15cm), and supernatant reaches after the certain liquid directly overflow to equalizing tank 11.
Anoxic biological filter 12 and aerobic biofilter 1 all can be selected the volcanics biofilter material for use, or accumulation formula filler---the spherical light ceramic developed recently of clay ceramic grain filter, haydites of book structure filtrate and China Jiangxi environmental protection company of Pingxiang Canon.
Flooding velocity is 1m
3/ d, BOD
5Be 180-220mg/L, ammonia nitrogen is 30-50mg/L, and nitrate nitrogen is 1.0-3.0mg/L, and SS is 130-170mg/L.Effluent quality: BOD is 15-25mg/L, and ammonia nitrogen is 3-6mg/L, and SS is 15-25mg/L.
Working process of the present invention is following:
(1) sewage (sewage of domestic grey water, rainwater and process septic tank) flows into equalizing tank 11 voluntarily through drainage pipeline and water inlet pipe 10, and equalizing tank 11 mainly plays the effect of regulating water quality, the water yield.After equalizing tank 11 water inlets arrive certain water level, start sewage airlift 9 sewage is promoted to preliminary sedimentation tank 7.
The sewage lifting gear of equalizing tank 11 does not adopt traditional sewage pump; And adopt a kind of new design device one airlift; Its special construction makes it have multiple actions such as lifting sewage, oil removal concurrently, and this can prevent that oil slick is to the unitary influence of subsequent disposal.
(2) in preliminary sedimentation tank 7; Sewage is at first flowed through for 25 times from pipe core and is distributed in equably the whole negative area after flow out around it reflector 26 reflection backs; And slowly upwards flow; Flow out from being arranged on vertical first effluent weir 27 of pool wall through the supernatant after the clarification, flow into anoxic biological filter 12 through anoxic biological filter water distributor 28 again with its effluent trough UNICOM, but and water distribution uniformity.
(3) in anoxic biological filter 12, sewage flow through successively from top to bottom its epimere filter material layer 31, hypomere filter material layer 33, supporting layer 34 reach the purpose of denitrogenation, get into the bottom of aerobic biofilter 1 at last from 12 bottoms, anoxic biological filter.The two sections filter material layer of anoxic biological filter 12 is carried out segmentation, timesharing back flushing, its at the middle and upper levels backwashing period be one day, lower floor is four days.During flushing lower floor filtrate along band flushing upper strata filtrate, therefore this moment back flushing upper strata filtrate separately.During back flushing upper strata filtrate; Earlier only open air gate valve and the air SV on the first back flushing tracheae 31, other valve Close All is separately behind the air purge 3min; Open the 3rd again and promote going out Water gate valve and going out water solenoid valve on air gate valve and air SV on the tracheae 55, the first back flushing water pipe 30; Air water is closed air gate valve and air SV on the first back flushing tracheae 31 after uniting flushing 5min again, washes 3min separately.Backwashing wastewater flows in the equalizing tank 11 from back flushing draining riser 38 certainly.During back flushing lower floor filtrate; Earlier only open air gate valve and the air SV on the second back flushing tracheae 37, other valve Close All is separately behind the air purge 3min; Open the 3rd again and promote going out Water gate valve and going out water solenoid valve on air gate valve and air SV on the tracheae 55, the second back flushing water pipe 36; Air water is closed air gate valve and air SV on the second back flushing tracheae 37 after uniting flushing 5min again, washes 3min separately.Backwashing wastewater flows in the equalizing tank 11 from back flushing draining riser 38 certainly.
(4) in aerobic biofilter 1; First water distribution board 39, supporting layer 40, the filter material layer 41 of flowing through successively from bottom to top from its bottom of sewage; Reach degradation of organic substances and nitrated purpose; Handle the second effluent weir 46 entering water legs of back water outlet, get into clean water basin (water solenoid valve that goes out on the water leg vent pipe 14 is opened condition at this moment) from water leg vent pipe 14 at last from 12 tops, anoxic biological filter.During normal the operation, open air gate valve and air SV on the blast main 45, air gets in the aerobic biofilters through blast main 45, micropore aeration pipe 44, and aerobic environment is provided.During back flushing; Only open earlier air gate valve and the air SV on the 3rd back flushing tracheae 42; Other valve Close All; Separately behind the air purge 3min, the backwashing wastewater of opening back flushing draining riser 47 places is again discharged SV, the 3rd and is promoted going out Water gate valve and going out water solenoid valve on air gate valve and air SV on the tracheae 55, the 3rd back flushing water pipe 43, after air water is united flushing 5min; Close air gate valve and air SV on the 3rd back flushing tracheae 42 again, wash 3min separately.Backwashing wastewater flows in the equalizing tank 11 from back flushing draining riser 47 certainly.
(5) in clean water basin 3; During normal the operation; Part clear water is back to anoxic biological filter 12 through 8 liftings of clear water airlift and carries out denitrification denitrogenation (reflux ratio is generally 2); The water solenoid valve that goes out on air gate valve on the 3rd lifting tracheae 55, air SV, the nitrification liquid return line 15 is opened condition at this moment, and another part is through outside the rising pipe 6 discharge ponds; During back flushing, the water solenoid valve that goes out on the nitrification liquid return line 15 is closing condition, and air gate valve and air SV on the 3rd lifting tracheae 55 are opened condition, and clear water promotes through clear water airlift 8 and is used for back flushing.
(6) dredging tube 13 in mud airlift in the preliminary sedimentation tank 75 and the storage basin 4 links, and mud is promoted to storage basin 4 through mud airlift 5.Storage basin 4 side wall upper part are provided with supernatant riser 2, and supernatant can pass through supernatant riser 2 direct overflow to equalizing tanks 11 after reaching certain liquid.Sludge discharging period is half a year, and mud is transported to relevant treatment unit and focuses on.
Claims (5)
1. handle dispersed wastewater integrated A/O bacteria filter device for one kind; It is characterized in that this device is cylinder-like structure; The device center vertically is provided with a cylinder; For preliminary sedimentation tank (7), between inside and outside cylindrical shell, be provided with partition wall, it is divided into equalizing tank (11), anoxic biological filter (12), aerobic biofilter (1), clean water basin (3) and storage basin (4); Wherein, anoxic biological filter (12), aerobic biofilter (1) and clean water basin (3) are concentric(al) circles arc structure;
Equalizing tank (11) comprises water inlet pipe (10) and equalizing tank sewage airlift (9), and water inlet pipe (10) is positioned at equalizing tank (11) pool wall top, with the sewage drainage pipe connection; Equalizing tank sewage airlift (9) comprises first riser tube (16), first air nozzle (17), first promotes tracheae (18), air release case (19), venting port (20), rising pipe (21), oil slick scum silica frost retaining pipe (22) and U-shaped water inlet pipe (23); First riser tube (16) and first promotes tracheae (18) and inserts in the equalizing tank (11); And the top of riser tube (16) is stretched into air and is discharged in the case (19); First promotes tracheae (18) bottom communicates with first riser tube (16) through first air nozzle (17); First promotes tracheae (18) upper end links to each other with gas blower (48); Rising pipe (21) one ends discharge case (19) with air and link to each other, and the other end links to each other with the pipe core (25) of preliminary sedimentation tank (7), and oil slick scum silica frost retaining pipe (22) is enclosed within U-shaped water inlet pipe (23) outside; Equalizing tank sewage airlift (9) is fixed on the partition wall between equalizing tank (11) and preliminary sedimentation tank (7) through pipe collar (24);
Preliminary sedimentation tank (7) comprises pipe core (25), reflector (26), mud airlift (5) and first effluent weir (27), is reflector (26) under the pipe core (25), and first effluent weir (27) is positioned at preliminary sedimentation tank (7) top; Mud airlift (5) comprises second riser tube (16), second air nozzle (51) and second promotes tracheae (52); Second riser tube (50) and second promotes tracheae (52) and inserts in the preliminary sedimentation tank (7); And the top of second riser tube (50) links to each other with dredging tube (13), is delivered to the bottom of storage basin (4); Second promotes tracheae (52) bottom communicates with second riser tube (50) through second air nozzle (51), and second promotes tracheae (52) upper end links to each other with gas blower (48); Mud airlift (5) is fixed on the partition wall between preliminary sedimentation tank (7) and storage basin (4) through pipe collar (22); First effluent weir (27) links to each other with the water distributor (28) of anoxic biological filter (12);
Anoxic biological filter (12) comprises water distributor (28), epimere filter material layer (29), the first back flushing water pipe (30), the first back flushing tracheae (31), segmentation filter screen (32), hypomere filter material layer (33), supporting layer (34), perforate filter plate (35), the second back flushing water pipe (36), the second back flushing tracheae (37) and back flushing draining riser (38); Water distributor (28) is positioned at top, anoxic biological filter (12), plays the effect of water distribution uniformity; The filter material layer of anoxic biological filter (12) is divided into epimere filter material layer (29) and hypomere filter material layer (33) through segmentation filter screen (32); Two sections filter material layers are equipped with back flushing tracheae and back flushing water pipe; Realize segmentation, timesharing back flushing; The first back flushing water pipe (30), the first back flushing tracheae (31) are positioned between epimere filter material layer (29) and the hypomere filter material layer (33), and the second back flushing water pipe (36), the second back flushing tracheae (37) are positioned at the lower space of anoxic biological filter (12) perforate filter plate (35); Perforate filter plate (35) is used to carry supporting layer (34) and hypomere filter material layer (33); Back flushing draining riser (38) is positioned at the partition wall upper position between anoxic biological filter (12) and equalizing tank (11), is higher than normal level of liquid, and backwashing wastewater can flow in the equalizing tank (11) certainly;
Aerobic biofilter (1) comprises perforate water distribution board (39), filter material layer (40), supporting layer (41), the 3rd back flushing tracheae (42), the 3rd back flushing water pipe (43), micropore aeration pipe (44), blast main (45), second effluent weir (46) and back flushing draining riser (47); Filter material layer (40) is positioned at aerobic biofilter (1) top; Supporting layer (41) is positioned at filter material layer (40) bottom, and micropore aeration pipe (44) is arranged in the supporting layer (41) with blast main (45); The 3rd back flushing tracheae (42), the 3rd back flushing water pipe (43) are positioned at the lower space of the perforate water distribution board filter plate of aerobic biofilter (1); Aerobic biofilter (1) water outlet is collected through second effluent weir (46) and is entered clean water basin (3); Back flushing draining riser (47) is positioned at the partition wall top between aerobic biofilter (1) and equalizing tank (11), is higher than normal level of liquid, and backwashing wastewater can flow in the equalizing tank (11) certainly;
Be provided with clear water airlift (8) and rising pipe (6) in the clean water basin (3); Clear water airlift (8) comprises the 3rd riser tube (53), the 3rd air nozzle (54) and the 3rd promotes tracheae (55); The 3rd riser tube (53) and the 3rd promotes tracheae (55) and inserts in the clean water basin (3); The 3rd promotes tracheae (55) bottom communicates with the 3rd riser tube (53) through the 3rd air nozzle (54); The 3rd promotes tracheae (55) upper end links to each other with gas blower (48), and the end of the 3rd riser tube (53) extends above the effluent trough of preliminary sedimentation tank (7), is connected with the 3rd back flushing water pipe (43), the second back flushing water pipe (36), the first back flushing water pipe (30); Phegma airlift (8) is fixed on the partition wall between clean water basin (3) and aerobic biofilter (1) through pipe collar (24); During not back flushing, the clear water in the clean water basin (3) is back to anoxic biological filter (12) through clear water airlift (8) and carries out denitrification denitrogenation; During back flushing, be used for back flushing through clear water airlift (8) lifting;
Storage basin (4) side wall upper part is provided with supernatant riser (2), and supernatant reaches after the certain liquid directly overflow to equalizing tank (11).
2. processing dispersed wastewater integrated A according to claim 1/O bacteria filter device is characterized in that anoxic biological filter (12) and aerobic biofilter (1) all adopt in volcanics biofilter material, clay ceramic grain filter, haydites of book structure filtrate or the spherical light ceramic any.
3. processing dispersed wastewater integrated A according to claim 1/O bacteria filter device, the particle diameter of filter medium that it is characterized in that epimere filter material layer (29) is 4-7mm, the particle diameter of filter medium of hypomere filter material layer (33) is 1-4mm.
4. processing dispersed wastewater integrated A according to claim 1/O bacteria filter device, the particle diameter of filter medium that it is characterized in that filter material layer (40) is 1-3mm.
5. processing dispersed wastewater integrated A according to claim 1/O bacteria filter device; It is characterized in that; The first lifting tracheae (18), second promotes on tracheae (52), the 3rd lifting tracheae (55), the first back flushing tracheae (31), the second back flushing tracheae (37), the 3rd back flushing tracheae (42), the blast main (45) and all is connected with air gate valve and air SV; All be connected with out Water gate valve on the first back flushing water pipe (30), the second back flushing water pipe (36), the 3rd back flushing water pipe (43) and go out water solenoid valve, backwashing wastewater relief outlet (47) locates to be connected with out water solenoid valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910247563XA CN101723560B (en) | 2009-12-30 | 2009-12-30 | Integrated A/O bacteria filter device for treating dispersed wastewater |
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| CN200910247563XA CN101723560B (en) | 2009-12-30 | 2009-12-30 | Integrated A/O bacteria filter device for treating dispersed wastewater |
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| CN102351372A (en) * | 2011-07-04 | 2012-02-15 | 京科高新（北京）环境科学研究所 | Purifying tank |
| CN102276063A (en) * | 2011-07-06 | 2011-12-14 | 刘学琳 | Integrated sewage treatment tank structure and manufacturing process thereof |
| CN103755091B (en) * | 2013-11-08 | 2016-01-20 | 安徽国祯环保节能科技股份有限公司 | A kind of integrated sewage treatment device |
| CN104058499B (en) * | 2014-07-15 | 2016-01-20 | 许建民 | A kind of BAF and technique |
| CN105461059B (en) * | 2015-12-24 | 2018-03-13 | 武汉钢铁有限公司 | Integral waste water biological treatment reactor |
| CN105858889A (en) * | 2016-05-17 | 2016-08-17 | 浙江省环境保护科学设计研究院 | Bamboo fibrous filler-based integrated sewage treatment device and method |
| CN108218126A (en) * | 2018-01-24 | 2018-06-29 | 武汉都市环保工程技术股份有限公司 | Staged domestic sewage treatment device and system |
| CN109319921A (en) * | 2018-10-25 | 2019-02-12 | 江苏大湖环境工程有限公司 | A kind of integral bio trickling filter |
| CN111908716B (en) * | 2020-08-06 | 2022-04-26 | 北京建筑大学 | Village and town sewage transition ring type ecological treatment system and method |
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