CN203768177U - Integrated sewage treatment system - Google Patents
Integrated sewage treatment system Download PDFInfo
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- CN203768177U CN203768177U CN201420048307.4U CN201420048307U CN203768177U CN 203768177 U CN203768177 U CN 203768177U CN 201420048307 U CN201420048307 U CN 201420048307U CN 203768177 U CN203768177 U CN 203768177U
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Abstract
The utility model discloses an integrated sewage treatment system. The integrated sewage treatment system comprises a pretreatment device, an anoxic tank, an anaerobic tank, an aerobic tank and a sedimentation tank, which are communicated in turn, and also comprises a sewage after-treatment device, a sludge treatment device and an oxygen supply device; a sewage inlet is arranged behind the pretreatment device; the sedimentation tank is provided with a mud discharging facility and a water outlet end; the mud discharging facility of the sedimentation tank is communicated with the feeding end of the sludge treatment device; the water outlet end of the sedimentation tank is communicated with the water inlet end of the sewage after-treatment device; a sewage backflow channel is arranged between the sedimentation tank and the anoxic tank; the aerobic tank is connected with the oxygen supply device. The system is simple and compact, and has mature and stable treatment effect, simple operation and management, less investment and small land occupation.
Description
Technical field
The utility model relates to water treatment field, particularly a kind of integrated effluent disposal system.
Background technology
At present, the urban wastewater treatment firm of China 80% adopts activated sludge process or other improved technology, and the technique that urban wastewater treatment firm is conventional has the techniques such as AAO, AO, SBR, CASS and oxidation ditch.
AAO technique combines traditional activated sludge process and biological nitration technique, has effectively removed the organism in sewage, nitrogen and phosphorus.The technique core of AAO technique is arranged as anaerobism, anoxic, aerobic, precipitation (or preposition anoxic), anaerobism can make poly-phosphorus microorganism preferentially obtain carbon source and fully discharge phosphorus above, under anaerobic polyP bacteria is converted into organic acid by the cooperation between bacterial classification by organism and is undertaken storing in cartridge by the energy that is hydrolyzed poly-phosphorus release, provides the excessive phosphorus of taking the photograph in follow-up aerobic environment to provide energy to digest degraded with self increasing to breed.Be denitrogenation in oxygen-starved area major function, nitric nitrogen provides by aerobic zone internal recycle, and oxygen-starved area has just completed the function of denitrogenation, aerobic zone, and this region is multi-functional, by microbiological deterioration BOD, nitrogen and phosphorus etc.The shortcoming of AAO technique, floor space is large, want independent settling tank, in technique, nitrifier, denitrifying bacteria, polyP bacteria exist competition and contradiction in organic loading, mud age and organic carbon source demand, be difficult to the efficient removal to carbon, nitrogen, phosphorus in same system, the large energy consumption of mud internal reflux amount is high.The little treatment effect of surplus sludge volume is not good.
AO technique is often added various biologic packing materials, there is system sludge concentration high, the residence time is short, energy consumption is low, sludge output is few, and running cost is low, and operational administrative is simple, it is short that its facility has the construction period, less investment, also relatively low to operator's requirement, main drawback is there is no independently sludge reflux system, do not culture suitable active sludge, thereby the Pollutant Treatment effect of some difficult degradations is not high, denitrification effect is not high, if will improve nitric efficiency, must strengthen nitrate recirculation ratio, thereby strengthen working cost.In addition, internal recycle liquid, from aeration tank, contains certain dissolved oxygen DO, makes A section be difficult to the anoxic condition that keeps desirable, affects denitrification effect, and denitrification percent is difficult to reach 90%, and to affect the factor of processing efficiency a lot, run unstable.
SBR technique good denitrification dephosphorization effect, stable, anti-shock loading, flexible operation, treatment facility is few, simple structure,, there is DO gradient in convenient operation maintenance management, has effectively controlled sludge bulking in reaction tank, less developer, operation cost is low.Shortcoming is: the resting period is moved, and control degree requires high, becomes water level operation, and power consumption increases, and it is good that mud stability is not so good as anaerobic nitrification.Internal recycle phosphor-removing effect is unstable, and finishing apparatus requires large, has increased total Yang Cheng, and the empty vacancy rate of equipment is higher, equalizing tank that will be larger when discontinuous water outlet, and sewage lifting head loss is larger, is not suitable with large-scale wastewater treatment plant.
Oxidation ditch process is to adopt circulating pond type, the mixed liquid of sewage and active sludge is constantly circulated therein, have the feature of completely hybrid and pulling flow type concurrently, it is simple that oxidation ditch has treatment scheme, convenient operation and management process stabilizing is reliable, and working cost is low.The shortcoming of oxidation ditch is: easily occur sludge bulking problem, operation flow velocity is unstable, easily produces dead all settled sludges, and mud mud longer mud in age is easily aging.
CASS biological treatment is the abbreviation of cyclic activated sludge system, and CASS divides in pond pre-reaction zone and main reaction region.In pre-reaction zone, microorganism can be adsorbed rapidly most of dissolved organic matter in sewage by the fast transfer mechanism of enzyme, the matrix Rapid Accumulation process of a high loading of experience, this plays good shock absorption to influent quality, the water yield, PH and hazardous and noxious substances, hyphomycetic growth is played to restraining effect simultaneously, can effectively prevent sludge bulking; Experience subsequently one in main reaction region compared with the substrate degradation process of underload.Cyclic activated sludge system integrates reaction, precipitation, draining, function, the degraded of pollutent is a plug-flow process in time, microorganism among aerobic, anoxic, anaerobism periodical change, thereby reach pollutant removal effect, also there is good denitrogenation, phosphorus removal functional simultaneously.CASS shortcoming: resting period operation, automatic control is had relatively high expectations; Become water level operation, power consumption increases.
It is also high that above technique all has denitrogenation dephosphorizing, organic removal rate, and technical maturity is stable, and operation management is simple, but its technological principle and feature are respectively not quite similar or existent defect.Each structures of processing disperse, investment of occupation of land is large, town sewage on existing national regulation is new is processed project water outlet and is needed the one-level A standard in execution " town domestic sewage treatment plant emission standard " (GB18918-2002), and it is practical simple compact to go back neither one in reality, treatment effect is stable, management is simple, and few technique that can a cover system reaches " town domestic sewage treatment plant emission standard " the one-level A standard in (GB18918-2002) is taken up an area in investment.
Utility model content
The purpose of this utility model is to provide a kind of integrated effluent disposal system, can be to organic efficient removals such as carbon containing, nitrogen, phosphorus in same system, and this system is simply compact, and treatment effect is mature and stable, and operation management is simple, and less investment is taken up an area few.Only need a cover system just can ensure that water outlet reaches " town domestic sewage treatment plant emission standard " one-level A standard in (GB18918-2002).
According to an aspect of the present utility model, integrated effluent disposal system is provided, comprise the pretreatment unit being communicated with successively, anoxic pond, anaerobic pond, Aerobic Pond and settling tank, also comprise sewage after-treatment device, sludge treatment equipment and apparatus of oxygen supply, pretreatment unit is provided with sewage import, settling tank is provided with mud extraction facility and water side, the mud extraction facility of settling tank is connected with the feed end of sludge treatment equipment, the water side of settling tank is communicated with the feed end of sewage after-treatment device, between settling tank and anoxic pond, be provided with mud external reflux passage, Aerobic Pond is connected with apparatus of oxygen supply.Sewage is by after pretreatment unit desanding, then enters successively anoxic pond, anaerobic pond, Aerobic Pond and carry out biochemical treatment.Owing to being provided with sludge reflux passage between settling tank and anoxic pond, the active sludge in Aerobic Pond can be transported to anoxic pond by internal reflux passage, to help anoxic pond to carry out biochemical reaction, to have removed most organism in sewage.Sewage enters anaerobic pond and carries out dephosphorization subsequently.Because the dissolved oxygen in sewage and the contained dissolved oxygen of sludge reflux have all been exhausted in anaerobic state in anoxic pond, therefore the anerobe in anaerobic pond can fully be decomposed the organism in sewage, and poly-phosphorus microorganism can fully absorb the phosphoric in sewage.Subsequently, mud mixture enters Aerobic Pond again, further removes the organism in decontaminated water under the effect of aerobic microbiological.Through above-mentioned processing, can fully remove carbon, nitrogen, phosphorus and organism in sewage, then filter out by sewage after-treatment device flocculation separation the clear water that organism and suspended solid in water sterilization can be met " town domestic sewage treatment plant emission standard " the one-level A standard in (GB18918-2002).And this system is simply compact, and mature and stable, operation management is simple, less investment, takes up an area few.Because apparatus of oxygen supply is that gap oxygen supply setting makes dissolved oxygen keep peak valley state, energy consumption is lower, and active sludge can not expand.Guide ring training wall is set in Anoxic/Aerobic anaerobic zone and impeller makes system be difficult for producing dead all settled sludges, and returned sluge active fresh is difficult for burin-in process effect stability.
In some embodiments, between Aerobic Pond and anoxic pond, be provided with internal reflux mouth.Owing to being provided with internal reflux mouth between Aerobic Pond and anoxic pond, can make the mud that contains nitric nitrogen in Aerobic Pond add in anoxic pond, help the microorganism in anoxic pond to carry out anti-nitration reaction to remove the nitrogen in sewage.
In some embodiments, in Aerobic Pond, anaerobic pond and anoxic pond, be provided with training wall, guide ring and plug flow device.Training wall and guide ring can keep the mixed flow of each pool inner water body, prevent mobile dead angle and fully mix.Can strengthen mixing of oxygen and water.Plug flow device can promote mud and drainage flow is mixed.
In some embodiments, sewage after-treatment device comprises the coagulative precipitation tank being communicated with successively, efficient filter tank and sterilizing unit, the feed end of coagulative precipitation tank is communicated with the water side of settling tank, coagulative precipitation tank is provided with mud extraction facility, the mud extraction facility of coagulative precipitation tank is connected with the feed end of sludge treatment equipment, at the bottom of coagulative precipitation tank, be set to many oblique grid slope, efficient filter tank is provided with back-purge system and filtration unit.Sewage after-treatment device can carry out flocculation sediment, filtration sterilization to sewage, to obtain water quality up to standard.
In some embodiments, sludge treatment equipment comprises between sludge thickener and sludge dewatering, between sludge thickener and sludge dewatering, be equipped with feed end, mud outlet end and water side, the feed end of sludge thickener is connected with the mud outlet end of the mud outlet end of settling tank and coagulative precipitation tank, feed end between the mud outlet end of sludge thickener and sludge dewatering and the drug end of medicament addition device are connected, and sludge thickener is all connected with the sewage entrance end of pretreatment unit with the water side between sludge dewatering.Sludge treatment equipment can concentrate mud, press dewatering obtains standard compliant mud with output system.
In some embodiments, integrated effluent disposal system also comprises medicament addition device, and medicament addition device is connected with coagulative precipitation tank and is connected with the mud outlet end of sludge thickener.The suspended substance flocculation sediment in sewage can add throwing coagulating agent to coagulation coagulative precipitation tank feed-water end by medicament addition device, so that can also make the concentrated flocculation of mud to sludge thickener mud outlet end dosing coagulant.
In some embodiments, coagulative precipitation tank is than the high 1.5m～2m in efficient filter tank.Coagulative precipitation tank is higher than efficient filter tank, and the sewage of coagulative precipitation tank can flow automatically to efficient filter tank without power-equipment and form pressure reduction, to reach better filter effect.
In some embodiments, to flow to anaerobic pond, Aerobic Pond finally poor to the gross head of settling tank from anoxic pond be 0.5m～1m to sewage.By the less head difference of design, can save energy consumption.
In some embodiments, settling tank is vertical sedimentation tank, and settling tank is provided with feed end, mud outlet end and water side, and feed end is arranged on the bottom of settling tank and is connected with Aerobic Pond, and the mud outlet end of settling tank is connected with mud discharging device.Mud mixture carries out gravity flocculation sediment with the form of tiltedly above erecting stream, and active sludge suspended substance is in the process of upwelling, and the generation throwing out that collides with each other between adjacent particle, is more conducive to muddy water layering and precipitating.
Brief description of the drawings
Fig. 1 is the process flow sheet of the integrated effluent disposal system of the utility model one embodiment;
Fig. 2 is the plot plan of the integrated effluent disposal system shown in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 and Fig. 2 have schematically shown the integrated effluent disposal system according to a kind of embodiment of the present utility model.
As depicted in figs. 1 and 2, integrated effluent disposal system, comprises the pretreatment unit 1, anoxic pond 2, anaerobic pond 3, Aerobic Pond 4 and the settling tank 5 that are communicated with successively.Integrated effluent disposal system also comprises sewage after-treatment device 6, sludge treatment equipment 7 and apparatus of oxygen supply 8, pretreatment unit 1 is provided with sewage import, settling tank 5 is provided with mud outlet end and water side, the mud extraction facility of settling tank 5 is communicated with the feed end of sludge treatment equipment 7, and the water side of settling tank 5 is communicated with the feed end of sewage after-treatment device 6.Between settling tank 5 and anoxic pond 2, be provided with sludge reflux passage, and on passage, be provided with excavating pump so that the active sludge that settling tank 5 is exported is pushed in anoxic pond 2.Apparatus of oxygen supply 6 is connected with Aerobic Pond 4 and provides oxygen for Aerobic Pond 4.Between Aerobic Pond 4 and anoxic pond 2, be provided with internal reflux mouth, and at the internal reflux mouth of Aerobic Pond 4, mud plug flow device be set, the mud that can make Aerobic Pond 4 include nitric nitrogen adds to and in anoxic pond, carries out denitrification.Sewage and returned sluge flow to anaerobic pond 3, Aerobic Pond 4 finally to settling tank 5 from anoxic pond 2, and its gross head is poor is 0.5m～1m.
Anoxic pond 2, anaerobic pond 3, Aerobic Pond 4 all dispose training wall 41, guide ring 42 and plug flow device 43, to promote sewage and mud operation, prevent flow blind angle.In Aerobic Pond 4, be also provided with aerating apparatus, so that oxygen fully contacts with sewage and mud.Plug flow device 43 is impeller under water.
Pretreatment unit 1 comprises coarse rack 11, fine fack 12 and swirler 13, sewage first filters out impurity thick in water through coarse rack 11, thinner impurity in dewatering in the past through fine fack 12 again, after from entering swirler 13, produce Three-Dimensional Elliptic strong rotational shear turbulent motion.Owing to existing granularity poor (or density difference) between coarse particles (or heavy phase) and fine particle (or light phase), its centrifugal force being subject to, centripetal buoyancy, fluid drag force etc. vary in size, be subject to centrifugal settling effect, in water, most of particulate matter is discharged through swirler underflow opening, and water and parts of fine particle are discharged and entered anoxic pond 2 by upflow tube.
Waste disposal plant 6 comprises the coagulative precipitation tank 61 being communicated with successively, efficient filter tank 62 and sterilizing unit 63, the feed end of coagulative precipitation tank 61 is communicated with the water side of settling tank 5, coagulative precipitation tank 61 is provided with mud extraction facility, and the mud extraction facility of coagulative precipitation tank 61 is communicated with the feed end of sludge treatment equipment 7.Coagulative precipitation tank 61 exceeds 1.5m～2.5m than efficient filter tank 62.Efficient filter tank 62 is provided with back-purge system and water side, in efficient filter tank 62, filtration unit 621 is also installed, and filtration unit 621 is sand filter blanket.
In addition, integrated effluent disposal system also comprises medicament addition device, and medicament addition device is connected with coagulative precipitation tank 61 and is connected with the mud outlet end of sludge thickener 71.Medicament addition device can add and throw coagulating agent and coagulant aids to coagulative precipitation tank 61.
Settling tank 5 is vertical sedimentation tank, and feed end is arranged on the bottom of settling tank 5.Active sludge enters settling tank 5 from settling tank 5 bottoms, carry out gravity flocculation sediment with the form of tiltedly above erecting stream, active sludge suspended substance is in the process of upwelling, generation throwing out collides with each other between adjacent particle, particle diameter and the quality of particle are strengthened gradually, and particle is combined into an entirety to sinking, and between primary water, forms a liquid-liquid/solid interface clearly, lower position sludge settling layer, top is clear water layer.At the bottom of bottom precipitating sludge is discharged pond by gantry suction dredge mud, a part is back to anoxic pond 2 to supplement the active sludge of operation system, and a part is disposed to sludge treatment equipment 7.Top clear water layer is from flowing to coagulative precipitation tank 61, in the process of gravity flow, further remove organism and the SS in water by medicament addition device 9 dosing coagulants and coagulant aids, the mudpan well of coagulative precipitation tank bottom design Cheng Duoge with 60 degree slopes, mud produces mud full-blown flowers and carries out flocculation sediment under the mixing effect of coagulating agent and coagulant aids, produce mud moisture interface, mud at the bottom of coagulative precipitation tank is got rid of by multitube, enters sludge treatment equipment 7.Disposal is filtered in the clear water gravity flow on top to efficient filter tank 62, between efficient filter tank and coagulative precipitation tank, need to have the discrepancy in elevation of 1.5m～2.5m, the supernatant liquor gravity flow of coagulative precipitation tank is to efficient filter tank 62, under the effect of pressure, pass through sand filter blanket, the supernatant liquor that coagulative precipitation tank 61 is discharged carries out degree of depth disposal, efficient filter tank 62 runs to regular hour section and will carry out back flushing to sand filter blanket, ensure filtration velocity and the clearance of filtering layer, the water that efficient filter tank 62 gives off flows to sterilizing unit 63 disinfections again, so just produce the water quality up to standard meeting the demands.
Sludge treatment equipment 7 comprises between sludge thickener 71 and sludge dewatering 72.Between sludge thickener 71 and sludge dewatering, 72 are equipped with feed end, mud outlet end and water side.The feed end of sludge thickener 71 is connected with the mud outlet end of settling tank 5 and coagulative precipitation tank 61.The mud outlet end of sludge thickener 71 is connected with the drug end of medicament addition device, medicament addition device to the mud after concentrated add throw coagulating agent to help mud to carry out mud-water separation so that postorder dehydration.Between the mud outlet end of sludge thickener 71 and sludge dewatering, 72 feed end is connected.Between sludge thickener 71 and sludge dewatering, 72 water side is all connected with the sewage import of pretreatment unit 1.Between sludge dewatering, be provided with belt type dewaterer in 72.Mud enters after sludge thickener 71 concentrates and carries out sludge dewatering by sludge squeezer again, and moisture percentage in sewage sludge is controlled at and below 80%, transports outward disposal.
As shown in Figure 2, the whole system layout that is rectangle, anoxic pond 2 and anaerobic pond 3 are strip and are positioned at the middle part of system, and one end of anoxic pond 2 is connected with one end of anaerobic pond 3.Aerobic Pond 4 is made as two both sides that lay respectively at anoxic pond 2 and anaerobic pond 3.Settling tank 5, coagulative precipitation tank 61 and efficient filter tank 62 are connected successively, and settling tank 5, coagulative precipitation tank 61 and efficiently filter tank 62 are two to be set on Aerobic Pond 4 sides.Between sludge thickener 71 and sludge dewatering, 72 arrange a set ofly, are connected with Aerobic Pond 4 with settling tank 5.Also be provided with in addition Ventilator Room 9, apparatus of oxygen supply 8 is arranged in Ventilator Room 9.In addition, be also provided with service shop, Central Control Room etc.Whole system is simply compact, and management is simple, and investment is taken up an area few.
Introduce and contain the microbic activity mud such as aerobic bacteria, anerobe, polyP bacteria and nitrifier in the system debug stage.In system operational process, the microorganisms such as above-mentioned aerobic bacteria, polyP bacteria and nitrifier produce again new active sludge by self-reproduction, can be for systemic circulation.
The sewage water treatment method of this practical integrated effluent disposal system, comprises the steps:
1) arrive anoxic pond 2 through the pretreated sewage self-flowing of pretreatment unit 1, meanwhile, the active sludge of backflow is also admitted to anoxic pond 2, and the microorganism in anoxic pond 2 carries out denitrogenation processing to sewage.Anoxic pond 2 microorganisms utilize abundant organism carbon source in water inlet, make the nitric nitrogen that returned sluge brings carry out denitrification, form N
2or N
2o escapes to atmosphere, reaches the object of denitrogenation;
2) sewage after denitrogenation and active sludge intermixture enter anaerobic pond 3, carry out organism anaerobic digestion and remove the phosphorus in sewage in anaerobic pond 3.The contained dissolved oxygen of dissolved oxygen in anoxic pond 2 sewage out and sludge reflux has all been exhausted in anaerobic state, polyP bacteria utilizes in born of the same parents and gathers the organism that phosphorus decomposes easy degraded in the energy absorption sewage producing, and polyP bacteria gathers suction phosphorus energy at the interior ergastic substances such as poly-β-hydroxybutyric acid (PHB) that carbon source is converted into of anaerobic pond 3;
3) sewage after dephosphorization and active sludge intermixture enter Aerobic Pond 4, and Aerobic Pond 4 has apparatus of oxygen supply 8 to carry out oxygen supply, and organism is further removed degraded by aerobic bacteria, and nitrifier becomes nitrate nitrogen to complete nitration reaction the mineralized nitrogen in sewage;
4) sewage after aerobic treatment and active sludge mixture enter settling tank 5 from bottom, aerobic zone, active sludge carries out mud-water separation in settling tank 5, a part sludge reflux to front end anoxic pond 2 to supplement active sludge, another part is rich in phosphorus sludge and enters sludge treatment equipment 7 as excess sludge discharge, thereby reaches the effect of dephosphorization;
5) the isolated clear water of settling tank 5 top clear water layer is disposed to coagulative precipitation tank 61, in the process of discharge, dosing coagulant and coagulant aids are further removed organism and the ss suspended solid in water, ss suspended solid produces mud full-blown flowers and carries out flocculation sediment under the mixing effect of coagulating agent and coagulant aids, produce muddy water layering, the mud of coagulative precipitation tank 61 bottoms enters sludge thickener and concentrates, the clear water on top is disposed to efficient filter tank 62 and carries out filtration treatment, and the clear water after filtration is discharged into sterilizing unit 63 again and carries out disinfection and to produce the clear water that reaches emission standard.
Carry out parameter declaration below as an example of 20000m3/d design scale example.
One, Inlet and outlet water water quality Jian Biao 1:(unit: mg/l)
Table 1
(note: the outer numerical value of bracket is the control index of water temperature while being greater than 12 degrees Celsius.Numerical value is the control index of water temperature while being less than or equal to 12 degrees Celsius in bracket.）
Two, the each structures functional parameter of integrated effluent disposal system
(1) anoxic pond
Chi Rong: L × W × H=48.5m × 8.25m × 5.5m=2199m
3
Design discharge: 20000m
3/ d=0.232m
3/ s
The residence time: HRT=2.64h
Sludge concentration: MLSS=3500mg/l(MLVSS=0.75MLSS)
Equipment: impeller under water, 2, D=1800mm, N=4kw.
(2) anaerobic pond
Chi Rong: L × W × H=34m × 8.25m × 5.5m=1541m
3
Design discharge: 20000m
3/ d=0.232m
3/ s
The residence time: HRT=1.85h
Sludge concentration: MLSS=3500mg/l(MLVSS=0.75MLSS)
Device type: impeller under water, 2, D=1800mm, N=4kw..
(3) Aerobic Pond
Chi Rong: L × W × H=82.5m × 8.25m × 5.5m=3743m
3
Design discharge: 10000m
3/ d=0.116m
3/ s
The residence time: HRT=8.97h
Sludge concentration: MLSS=3500mg/l(MLVSS=0.75MLSS)
Sludge loading: 0.12kgBOD
5/ kgMLVSS.d
Theoretical total oxygen demand: 190kgO
2/ h
Theoretical total oxygen demand: 280kgO
2/ h
Coefficient of oxygen utilization: 25%
Drag losses: 2.5～5.kpa
Internal reflux ratio: R=100～150%
Device type: type micro-pore aerator, model; L=1000mm, D=91mm
Number of devices: single group: 168, two groups 336,
Device parameter: oxygenation capacity 1.125kgO
2/ h/ root
Standard tolerance: 16m3/h/ root
Impeller under water: 4, two groups, totally 8, D=1800mm, N=4kw
Internal reflux pump: 2 of single groups, two groups 4, flow 625m
3/ h
Yang Cheng: H=1.0m,
Power: N=7.5kw
(4) settling tank
Design discharge: Q=0.17m
3/ s
Single group precipitation area: L × W=15.8m × 37.996m=600.3m
2
Waterpower surface load: mean load 0.8m
3/ (m
2.h)
Maximum load 1.3m
3/ (m
2.h)
Moisture percentage in sewage sludge: 99.6%
Return sludge ratio: 50～100%
Device type: suction dredger (configuration sludge reflux pump), 1 of single group, two groups 2
Sludge reflux pump: flow: 360m
3/ h,
Power: N=4kw, Yang Cheng: 2～3m
(5) coagulative precipitation tank
Major equipment: sludge pump, medicament addition device
The residence time: 1.79h
Single group coagulating sedimentation pool volume: 13.5mx15.8x3.50=747.55m3(6) Ventilator Room:
Design total air demand: Q=70m3/min
Air feed blast: P=65kpa
Power of motor: N=60kw
Blower fan quantity: 3 (2 use 1 are standby)
Import blast: P=98kpa
Outlet blast: p=163kpa
(7) sludge thickener
Chi Rong: 209m
3
Design discharge: Q=780m
3/ d
Device type: underwater stirrer, impeller diameter: 580mm,
Power: N=3kw
(8) between sludge dewatering
Major equipment: belt type dewaterer, mud spiral pump, adding of agent system etc.
(9) efficient filter tank
Major equipment: gas blower, water pump, valve.
Filtrate: quartzy extra large sand, preferably select the quartz sand of the sand field, seashore that seawater scouring strength ratio is larger.Particle diameter 0.95～1.35mm; Non-homogeneous coefficient K80=1.0～1.3; Thickness of filter bed 1.2～1.5m.
Filtering velocity: 7～15m/h.Husky headwater depth 1.2～1.3m.
Back washing strength: pressurized air 15～161/m2.s; Water recoil 4～51/m2.s; Water surface is swept and is washed 1.5～1.8/m2.s.
Above-described is only embodiments more of the present utility model.For the person of ordinary skill of the art, not departing under the prerequisite of the utility model creation design, can also make some distortion and improvement, these all belong to the protection domain of utility model.
Claims (9)
1. integrated effluent disposal system, it is characterized in that: comprise the pretreatment unit (1) being communicated with successively, anoxic pond (2), anaerobic pond (3), Aerobic Pond (4) and settling tank (5), also comprise sewage after-treatment device (6), sludge treatment equipment (7) and apparatus of oxygen supply (8), described pretreatment unit (1) is provided with sewage import, described settling tank (5) is provided with mud extraction facility and water side, the mud extraction facility of described settling tank (5) is connected with the feed end of sludge treatment equipment (7), the water side of described settling tank (5) is communicated with the feed end of sewage after-treatment device (6), between described settling tank (5) and anoxic pond (2), be provided with sludge reflux passage, described Aerobic Pond (4) is connected with apparatus of oxygen supply (6).
2. integrated effluent disposal system according to claim 1, is characterized in that: between described Aerobic Pond (4) and anoxic pond (2), be provided with internal reflux mouth.
3. integrated effluent disposal system according to claim 1, is characterized in that: in described Aerobic Pond (4), anaerobic pond (3) anoxic pond (2), be provided with training wall (41), guide ring (42) and plug flow device (43).
4. integrated effluent disposal system according to claim 1, it is characterized in that: described sewage after-treatment device (6) comprises the coagulative precipitation tank (61) being communicated with successively, efficient filter tank (62) and sterilizing unit (63), the feed end of described coagulative precipitation tank (61) is communicated with the water side of settling tank (5), described coagulative precipitation tank (61) is provided with mud extraction facility, the mud extraction facility of described coagulative precipitation tank (61) is connected with the feed end of sludge treatment equipment (7), described coagulative precipitation tank (61) end, is set to many oblique grid slope, described efficient filter tank (62) is provided with back-purge system and filtration unit (621).
5. integrated effluent disposal system according to claim 4, it is characterized in that: described sludge treatment equipment (7) comprises between sludge thickener (71) and sludge dewatering (72), between described sludge thickener (71) and sludge dewatering, (72) are equipped with feed end, mud outlet end and water side, the feed end of described sludge thickener (71) is connected with the mud outlet end of settling tank (5) and the mud outlet end of coagulative precipitation tank (61), between the mud outlet end of described sludge thickener (71) and sludge dewatering, the feed end of (72) is connected, between described sludge thickener (71) and sludge dewatering, the water side of (72) is all connected with the sewage entrance end of pretreatment unit (1).
6. integrated effluent disposal system according to claim 5, it is characterized in that: described integrated effluent disposal system also comprises medicament addition device, described medicament addition device is connected with coagulative precipitation tank (61) and the mud outlet end of sludge thickener (71) connects.
7. integrated effluent disposal system according to claim 4, is characterized in that: described coagulative precipitation tank (61) is than the high 1.5m～2m in efficient filter tank (62).
8. integrated effluent disposal system according to claim 1, is characterized in that: it is 0.5m～1m that sewage flows to anaerobic pond (3), Aerobic Pond (4) finally poor to the gross head of settling tank (5) from anoxic pond (2).
9. integrated effluent disposal system according to claim 1, it is characterized in that: described settling tank (5) is vertical sedimentation tank, described settling tank (5) is provided with feed end, mud outlet end and water side, the feed end of described settling tank (5) is arranged on the bottom of settling tank (5) and is connected with Aerobic Pond (4), and the mud outlet end of described settling tank (5) is connected with mud discharging device.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723896A (en) * | 2014-01-24 | 2014-04-16 | 王胜初 | Integrated sewage disposal system and disposal method |
| CN109502880A (en) * | 2018-10-12 | 2019-03-22 | 海南美润环境工程有限公司 | A kind of MBBR integrated sewage treating apparatus and method |
| CN109607949A (en) * | 2018-12-27 | 2019-04-12 | 中国化学工程第六建设有限公司 | Large-size chemical sewage-treatment plant and method |
| CN110031242A (en) * | 2018-01-11 | 2019-07-19 | 中广核研究院有限公司 | Anti- deposition experimental tank and impurity tester |
-
2014
- 2014-01-24 CN CN201420048307.4U patent/CN203768177U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723896A (en) * | 2014-01-24 | 2014-04-16 | 王胜初 | Integrated sewage disposal system and disposal method |
| CN110031242A (en) * | 2018-01-11 | 2019-07-19 | 中广核研究院有限公司 | Anti- deposition experimental tank and impurity tester |
| CN109502880A (en) * | 2018-10-12 | 2019-03-22 | 海南美润环境工程有限公司 | A kind of MBBR integrated sewage treating apparatus and method |
| CN109607949A (en) * | 2018-12-27 | 2019-04-12 | 中国化学工程第六建设有限公司 | Large-size chemical sewage-treatment plant and method |
| CN109607949B (en) * | 2018-12-27 | 2021-04-30 | 中国化学工程第六建设有限公司 | Large-scale chemical sewage treatment device and method |
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