CN203382619U - Sewage-land biological filtration and precipitation system for removing suspended solids and organic matters from sewage - Google Patents
Sewage-land biological filtration and precipitation system for removing suspended solids and organic matters from sewage Download PDFInfo
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- CN203382619U CN203382619U CN201320504171.9U CN201320504171U CN203382619U CN 203382619 U CN203382619 U CN 203382619U CN 201320504171 U CN201320504171 U CN 201320504171U CN 203382619 U CN203382619 U CN 203382619U
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Abstract
The utility model discloses a sewage-land biological filtration and precipitation system for removing suspended solids and organic matters from sewage. The system comprises a tank body which is formed underground through excavating, wherein anti-seepage membranes or other water sealing materials are laid at the periphery and bottom of the tank body; the tank body contains a sand layer, a sludge layer, a sludge-water separation layer, a gas collecting layer and a soil layer which are sequentially arranged from bottom to top; a transition layer is arranged between the sludge layer and the sludge-water separation layer and between the sludge-water separation layer and the gas collecting layer respectively; the gas collecting layer and the soil layer are separated from each other by a mesh-like material; water collecting pipes are distributed at the middle-upper part of the sludge-water separation layer or in the gas collecting layer and are finally connected with a water draining pipe; a plurality of gas outlet pipes are distributed in the gas collecting layer, penetrate through the soil layer, are communicated with the atmosphere and extend above the ground. According to the sewage-land biological filtration and precipitation system for removing the suspended solids and organic matters from the sewage, filtration and precipitation separation technologies are combined, so that the removal effect of the suspended solids and organic matters is good, and the standards of outlet water are improved; meanwhile, the sludge-water separation layer and the soil layer are built underground, so that the land occupancy is reduced.
Description
Technical field
The utility model relates to suspended substance and organic polluted water land biofiltration settling system in a kind of removal water, belongs to the ecological wastewater processing technical field.
Background technology
At present, in sewage treatment process, solid-liquid separating method commonly used mainly contains precipitation and filters.Settling tank is to be precipitated as basic construct thing important in the sewage treatment process of principle, is mainly used in removing suspended substance.Settling tank technique is simply effective, is the mud-water separation method of province's energy.But traditional settling tank function ratio is more single, only there is the precipitate and separate function, and exist that floor space is large, investment is large, removal efficiency is low, sedimentation effect is poor, mud easily expands, easily produce peculiar smell, anti-shock loading and the shortcoming such as the temperature variation ability is low.Traditional settling tank is lower to extra fine suspended particulate clearance simultaneously.Therefore, when to the having relatively high expectations of precipitate and separate effect, usually adopt the method that increases attached treatment facility equipment after traditional settling tank to strengthen the precipitate and separate effect.For example, can after settling tank, increase filtering separation device, so just can reach the precipitate and separate effect of high requirement.But the method for this increase subsequent disposal facility can cause the raising of investment, floor space, running cost and operational management complicacy.
Filtration is to remove colloid and the most frequently used method of suspended substance solid.In sewage treatment project, filtration process commonly used has deep-bed filtration, surface filtration and membrane filtration.Deep-bed filtration is to make liquid remove and be suspended in the particulate matter in liquid by the filter bed be comprised of certain particle or compressible filtrate.Surface filtration is that suspended particulate is removed in the mechanical sieving effect that makes liquid pass through the skim filtrate.Sieving is a kind of surface filtration technique commonly used in sewage disposal, and sieving mainly is used in the sewage pretreatment unit, can select as required scalping, dusting cover and Microtraps, generally can only hold back the coarse particulate matter in sewage.Membrane filtration can be to more fine particle and even dissolved constituent are selected to filter.The major advantage of membrane filtration is that efficiency is high, effective, but also has expensive, film vulnerable to pollution, the shortcomings such as working cost is high, energy consumption is high, complex management simultaneously.Membrane filtration process is divided into and comprises micro-filtration, ultrafiltration, nanofiltration, reverse osmosis etc. according to the size of separating aperture.Micro-filtration can reduce turbidity, removal suspended substance and bacterium, strengthen disinfection; Ultrafiltration is mainly used in removing suspended particle, colloid, bacterium and larger molecular organics; Nanofiltration mainly is used in removes specific solute and component in sewage, as the polyvalent metal ion that produces hardness etc.; Reverse osmosis is mainly used in water demineralizing.
The filtrate of tradition sand filter can adopt the particulate materials such as quartz sand, hard coal, haydite, rhombspar, garnet, magnetic iron ore, and particle diameter is generally 0.2 ~ 3mm.Because particle diameter is less, the retaining power of traditional sand filter is stronger, and head loss is little, cost is low, but exist easy obstruction simultaneously, easily harden, filtration cycle is short, washing water quantity reaches greatly the problems such as energy consumption height.
Biological filter is the artificial bio-membrane's treatment technology grown up through more original intermittent sand filtration pond and contact filter, on engineering only for the treatment of the organic pollutant in sewage.Its ultimate principle is to fill particle or the banded filtrate of high-specific surface area in bio-reactor; as microorganic adhesion and form biomembranous carrier; the effluent stream filter material, the microbial film that the organism in sewage is formed by filter material surface adsorbs, and progressively degrades by biochemical reaction.The advantages such as biological filter has stable effluent quality, anti impulsion load, working cost is low, sludge yield is few, toggle speed is fast.But simultaneously, the traditional biological filter tank also exist floor space large, easily stop up, the worm fly is many, peculiar smell is arranged, the microbial film that comes off needs the shortcomings such as subsequent disposal.
Biological adsorption is that material is adsorbed on the phenomenon of organism surface or biofilm surface by physics chemical action.In sewage disposal, biological adsorption is mainly to utilize microorganism flco in sewage to organic adsorption, and then Organic degradable components is wherein carried out biological degradation and reached organic matter removal or decrement effect.
Summary of the invention
Shortcoming and deficiency for above-mentioned conventional art, the purpose of this utility model is to provide suspended substance and organic polluted water land biofiltration settling system in a kind of removal water, by biological adsorption, mechanical sieving and microdeposit isolation technique are organically combined, realize good suspended solid and organic matter removal effect, improve effluent quality.
The technical solution of the utility model is as follows: comprise a cell body that excavates or be built at subsurface, surrounding and bottom are covered with anti seepage membrane or other sealing material, are followed successively by from bottom to top: sludge blanket, mud-water separation layer; In order fully to realize that land resources utilization maximizes and the insulation deodorizing, also can above cell body, cover pedosphere, and between pedosphere and mud-water separation layer, the gas collection layer is set, discharge system to collect gas; For extending the work-ing life of the sealing materials such as anti seepage membrane, layer of sand can be set under sludge blanket; Described sludge blanket and gas collection metafiltration material particle size range are 7 ~ 100mm, and mud-water separation metafiltration material particle size range is 5 ~ 80mm; Between described sludge blanket and mud-water separation layer, between mud-water separation layer and gas collection layer, a transition layer is arranged; Between gas collection layer and pedosphere, with screen cloth shape material, separate; Be distributed with header in the mud-water separation layer, and finally be connected with water shoot; Be distributed with a plurality of escape pipes in the gas collection layer, described escape pipe communicates and elevates above the soil above through pedosphere with atmosphere.
Suspended substance and organic polluted water land biofiltration settling system in described removal water, according to the difference of the water flow direction in the mud-water separation layer, can be divided into flat flow, rising streaming and three kinds of forms of decline streaming.
According to the water intake mode difference of polluted water land biofiltration settling system, flat flow biofiltration settling system can be divided into direct flat flow and water distributor flat flow.The water inlet form of direct flat flow biofiltration settling system, the section form that generally refers to the processing unit front into water is suitable with soil biofiltration settling system with size, the sewage of processing through leading portion (contains many suspended substances, hereinafter referred to as muddy water) direct along continuous straight runs, be uniformly distributed the water-carrying section that flows into the biofiltration settling system.The water inlet form of water distributor flat flow biofiltration settling system, be generally biofiltration settling system influent side vertically or tilt (with the ground level angle be 0 ~ 90 °) a plurality of water distributors are set, the muddy water of processing through leading portion enters water distributor through water inlet pipe, and muddy water enters the biofiltration settling system by a plurality of perforate levels on water distributor.
The water inlet form of decline streaming biofiltration settling system, generally arrange the porous water distributor at mud-water separation layer upper level, and the muddy water of processing through leading portion enters water distributor through water inlet pipe, by the mud-water separation layer of flowing through from top to bottom of a plurality of perforates on water distributor.The water inlet form of rising streaming biofiltration settling system, generally arrange the porous water distributor at mud-water separation layer bottom level, and the muddy water of processing through leading portion enters water distributor through water inlet pipe, by the mud-water separation layer of flowing through from bottom to top of a plurality of perforates on water distributor.
The muddy water of processing through leading portion is by sludge retention and biological adsorption under the filtering separation effect of biofiltration settling system filtrate, and the mud granule that particle diameter is larger and the microbial film come off precipitate and accumulate, store at sludge blanket under action of gravity; Water after the settling system purification is collected by water shoot and is discharged soil biofiltration settling system by header after filtration.The biological adsorption ability that the microbial film formed at described filter material surface in the filtering-depositing process has, can improve the effect of mud-water separation.
In described removal water, suspended substance and organic polluted water land biofiltration settling system also comprise the back flushing air diffuser system be comprised of gas blower, air-diffuser and connecting tube, the back flushing air-diffuser is arranged in sludge blanket, by pipeline, with gas blower, is connected; Described air-diffuser can adopt air bell (tube wall perforate), diffuser plate or other air diffuser forms.
When the sludge storage storage of sludge blanket reaches a certain amount of, start gas blower by after air pressurized, by the back flushing air-diffuser, sludge blanket and mud-water separation layer being carried out to back flushing, mud is discharged to the filtering-depositing system.After back flushing, the discharge of mud can be used the discharge system that purifies rear water, also can shore pipe be set separately mud is discharged.Adopt gas-water associating back flushing can promote backwash effect, save washing water quantity, also can adopt separately air or water backwashing; Air Reverse rinses and not only can improve the biomembrane activity that recovers filter material layer and hold back adsorptive power, has oxidation effect concurrently simultaneously, and the degraded purification function of enhancement microbiological to pollutent in sewage improves effluent quality.
In described removal water in suspended substance and organic polluted water land biofiltration settling system operational process, the air that the gas that bacteria metabolism produces and backwash process Air dispersion device discharge, escape pipe in the gas collection layer is collected the discharge system, this escape pipe starts from the gas collection layer through pedosphere and, more than extending out to ground, gas focuses on after directly being entered atmosphere or collection.Portion gas can directly be discharged to outside system by pedosphere, and the part pollutent wherein contained and stink, by the pedosphere adsorption cleaning, reduce the harm to atmosphere.
The utlity model has following advantage:
1, compare with the traditional secondary settling tank, fill filtrate in sludge blanket, filtration, precipitate and separate and biosorption technology are combined, precipitate and separate is effective, and Effluent criteria is high.
2, with the traditional secondary settling tank, compare, along with the increase of system flooding time, the microbial film formed at filter material surface has good surface cohesion adsorptive power, improves solid-liquid separation effect.
3, adopt than the filtrate of small particle size at the mud-water separation layer, guarantee the effectively catching mud granule, adopt the filtrate of greater particle size at sludge blanket, guarantee that sludge blanket can reach good sludge accumulation, storage effect.Mud in the sludge blanket of bottom can carry out the anaerobic digestion reaction.
4, back-purge system is set, adopts strengthening gas-water associating back-flushing method to carry out back flushing, the mud after precipitate and separate and the aging microbial film come off can be discharged to the filtering-depositing system; Can wash away the microbial film that upgrades filter material surface, recover filter material layer surface biological adsorptive power simultaneously.Backwash process consuming time short, energy consumption is low.Also can adopt separately water or Air Reverse to rinse.
5, sludge blanket mud can be used water shoot and is discharged to outside system after back flushing air water mix and blend, also can sludge drainage system be set separately mud is discharged to system.
6, with traditional settling tank, compare, building polluted water land biofiltration settling system in soil Xia， top has a pedosphere, does not affect other purposes in soil, has reduced the land seizure amount; As utilize top arable layer kind plant or build parking lot etc., can realize soil " with and do not account for ".
7, with general filter chamber, compare, cost is low, less energy consumption, mud-water separation is effective, management is simple, working cost is low.
The accompanying drawing explanation
B-B diagrammatic cross-section when Fig. 1 is the utility model employing rising streaming water inlet form.
A-A diagrammatic cross-section when Fig. 2 is the utility model employing rising streaming water inlet form.
D-D diagrammatic cross-section when Fig. 3 is the utility model employing decline streaming water inlet form.
C-C diagrammatic cross-section when Fig. 4 is the utility model employing decline streaming water inlet form.
Fig. 5 is the F-F diagrammatic cross-section of the utility model while adopting direct flat flow water inlet form.
Fig. 6 is the E-E diagrammatic cross-section of the utility model while adopting direct flat flow water inlet form.
H-H diagrammatic cross-section when Fig. 7 is the utility model employing water distributor flat flow water inlet form.
G-G diagrammatic cross-section when Fig. 8 is the utility model employing water distributor flat flow water inlet form.
Wherein, 1, layer of sand; 2, sludge blanket; 3, mud-water separation layer; 4, gas collection layer; 5, pedosphere; 6, anti seepage membrane or other sealing material; 7, water distributor; 8, header; 9, escape pipe; 10, air diffuser arm; 11, air diffuser main; 12, gas blower; 13, water inlet pipe; 14, water shoot; 15, water distribution standpipe; 16, water distribution transverse tube.
Embodiment
Further illustrate the utility model below in conjunction with accompanying drawing and by specific embodiment.
embodiment 1:(rising streaming biofiltration settling system structure)
As depicted in figs. 1 and 2, the present embodiment comprises the cell body of a trapezoidal cross-section, at below ground, excavates and forms, and surrounding and bottom are covered with anti seepage membrane or other sealing material 6.Be filled with five parts in cell body, be followed successively by layer of sand 1, sludge blanket 2, mud-water separation layer 3, gas collection layer 4 and pedosphere 5 from bottom to top.Back flushing air bell 10,11 is layed in sludge blanket, and water distributor 7 is layed in mud-water separation layer bottom, and header 8 is layed in mud-water separation layer middle and upper part.Wherein, water distributor 7 is positioned at air bell top, and the top of header 8, near gas collection layer 4, has a plurality of holes on the tube wall of water distributor 7 and header 8.Back flushing air bell 10,11 has production well on pipeline, is layed in sludge blanket, and a wherein end sealing, the other end is connected with gas blower 12.Water inlet pipe 13 is connected with water distributor 7, and water shoot 14 is connected with header 8.Between gas collection layer 4 and pedosphere 5, with screen cloth shape material, separate.Anti seepage membrane or other sealing material 6 are positioned on the bottom and hypotenuse of design section, and Main Function is to prevent sewage pollution underground water, simultaneously, also need to lay layer of sand between bottom anti seepage membrane and soil to extend the work-ing life of anti seepage membrane.
The muddy water of processing through leading portion is by water inlet pipe 13, and the perforation water distributor 7 in being horizontally set on mud-water separation layer 3 enters removes suspended substance and organic polluted water land biofiltration settling system in water.The muddy water mud-water separation layer 3(that flow through from bottom to top consists of rubble).In sewage, the macrobead suspended substance precipitates through action of gravity, than the suspended substance of small particle size, through holding back of filtrate, filter and adsorption is trapped and separates, can form microbial film at filter material surface in the filtering-depositing process, the suspended substance of holding back and the microbial film newly come off are deposited to accumulation in sludge blanket 2, store, and reach the purpose of mud-water separation.On filtrate, biofilm surface has good cohesion adsorptive power, exists a large amount of microorganisms on multiple populations, and they have certain degraded and conversion capability to the suspension in sewage and dissolved organic matter, nitrogen, phosphorus etc.Finally, the water precipitated after filtration after purifying treatment comes together in header 8 and discharges described precipitate and separate system through water shoot 14 by the perforate on header.In described removal water, but the ornamental plant such as suspended substance and organic polluted water land biofiltration settling system top pedosphere 5 Planting Crops, lawn, construction parking lot etc., improve land utilization ratio, has the effect that prevents that stink from distributing, being incubated concurrently simultaneously.The escape pipe 9 of the waste gas produced in operational process in gas collection layer 4 collected the discharge system, and gas focuses on after directly entering atmosphere or collection.
In operational process, when the sludge storage storage of sludge blanket reaches a certain amount of, start gas blower 12 and will after air pressurized, by 10,11 pairs of described filtering separation systems of air bell, carry out back flushing, sludge blanket and mud-water separation layer are carried out to gas-water associating back flushing, mud is discharged to the filtering-depositing system.Also can adopt separately water or Air Reverse to rinse, adopt gas-water associating back flushing can promote backwash effect, save washing water quantity, solve the blockage problem of mud-water separation layer and sludge blanket, and recover the adsorptive power of holding back of filter material layer.Backwashing period is approximately 1 ~ 2 day, and each backwashing time is approximately 20 ~ 30 minutes, concrete operations look filter material layer actual hold back situation and actual influent quality come fixed.In described treatment system operational process, gas blower adsorbs when saturated to be opened into when back flushing finishes at media filtration closes.
The utility model adopts an example of rising streaming biofiltration settling system, antiseepage thickness 1mm wherein, mud bed thickness 400mm, its particle diameter of filter medium is 50 ~ 80mm, mud-water separation bed thickness 3000mm, and its particle diameter of filter medium is 20 ~ 50mm, gas collection bed thickness 350mm, its particle diameter of filter medium is 50 ~ 80mm, and the soil bed thickness 400mm of earthing plays insulation, afforests, prevents the effect that foul smell distributes.Water distributor, header and air bell all adopt perforated pipe, and the tube wall opening direction and vertical direction at 45 °, water distributor is positioned at the bottom of mud-water separation layer, air bell is arranged in sludge blanket, and is positioned at water distributor below, prevents from stopping up.Header is arranged in the top of mud-water separation layer, and escape pipe is arranged in the gas collection layer.Suspension content from activated sludge process aeration tank mixed solution is 3187mg/L.When adopting the traditional secondary settling tank to carry out the muddy water precipitate and separate, in water outlet, suspension content is 37mg/L; And while adopt removing in water suspended substance and organic polluted water land biofiltration settling system, in water outlet, suspension content is 15 mg/L.Visible, carry out mud-water separation with employing traditional secondary settling tank and compare, the concentration of suspension that polluted water land biofiltration settling system is processed water obviously reduces.
embodiment 2:(decline streaming biofiltration settling system structure)
As shown in Figure 3 and Figure 4, the decline streaming is all identical with the structure of rising streaming biofiltration settling system functional zone, back-purge system and exhaust system, and difference is that the water intake mode adopted is different with water-out manners.As shown in Figure 4, decline streaming biofiltration settling system is horizontally set on mud-water separation layer top by water distributor 7, and header 8 is arranged on mud-water separation layer bottom.By water inlet pipe 13, the perforation water distributor 7 in being horizontally set on mud-water separation layer 3 enters suspended substance and organic polluted water land biofiltration settling system in removal water to the muddy water of processing through leading portion.The muddy water mud-water separation layer 3(that flow through from top to bottom consists of rubble), reach the effect of sludge retention, particulate matter precipitate and separate.Water after precipitation process is collected by water shoot 14 and is discharged described precipitate and separate system by the header 8 that is positioned at mud-water separation layer bottom after filtration.
the direct flat flow biofiltration of embodiment 3:(settling system structure)
As shown in Figure 5 and Figure 6, directly the structure of flat flow and rising streaming biofiltration settling system functional zone, back-purge system, exhaust system and water-out manners is all identical, and difference only is the water intake mode difference adopted.Directly flat flow biofiltration settling system is without arranging water inlet pipe and water distributor, and on the water-carrying section of biofiltration settling system, velocity flow profile is roughly even, mainly is applicable to the occasion that the front stage treatment method of sewage is the soil biological treatment system.As shown in Figure 6, in polluted water land treatment system (as Chinese patent CN 102001743 B) and removal water, suspended substance and organic polluted water land biofiltration settling system are built in the cell body of same trapezoidal cross-section, and surrounding and bottom are covered with anti seepage membrane or other sealing material 6.As shown in Figure 6, the muddy water after the soil biological treatment system is processed and the microbial film come off directly flow into and remove suspended substance and organic polluted water land biofiltration settling system in water with the advection form, reach sludge retention, the effect of particulate matter precipitate and separate.Simultaneously, because muddy water directly enters polluted water land biofiltration settling system by soil biological treatment system advection, greatly save the power-lift expense.Water after precipitation process comes together in header 8 and discharges described precipitate and separate system through water shoot 14 by the perforate on header after filtration.
The utility model adopts an example of direct flat flow biofiltration settling system, antiseepage thickness 1mm wherein, mud bed thickness 400mm, its particle diameter of filter medium is 50 ~ 80mm, mud-water separation bed thickness 3000mm, and its particle diameter of filter medium is 20 ~ 50mm, gas collection bed thickness 350mm, its particle diameter of filter medium is 50 ~ 80mm, and the soil bed thickness 700mm of earthing plays insulation, afforests, prevents the effect that foul smell distributes.Header and back flushing air bell all adopt perforated pipe, and the tube wall opening direction and vertical direction at 45 °.Air bell is arranged in sludge blanket, and header is arranged in the top of mud-water separation layer, and escape pipe is arranged in the gas collection layer.From suspension content in aerobic soil biological treatment system muddy water, be 516mg/L.When adopting the traditional secondary settling tank to carry out the muddy water precipitate and separate, in water outlet, suspension content is 28mg/L; And while adopt removing in water suspended substance and organic polluted water land biofiltration settling system, in water outlet, suspension content is 19mg/L.Visible, carry out mud-water separation with employing traditional secondary settling tank and compare, the concentration of suspension that polluted water land biofiltration settling system is processed water obviously reduces.
embodiment 4:(water distributor flat flow biofiltration settling system structure)
As shown in Figure 7 and Figure 8, the structure of water distributor flat flow and rising streaming biofiltration settling system functional zone, back-purge system, exhaust system and water-out manners is all identical, and difference only is the water intake mode difference adopted.As shown in Figure 7, Figure 8, water distributor flat flow biofiltration settling system is horizontally disposed with water distribution transverse tube 16 in water inlet pipe 13 1 sides, more water distribution standpipes 15 are set communicate with water distribution transverse tube 16.Described water distribution standpipe 15 is arranged on the mud-water separation layer, and itself and ground level angle are 90 °.Described header 8 is positioned at the mud-water separation layer.By water inlet pipe 13, water distribution transverse tube 16, a plurality of perforates on water distribution standpipe 15 enter and remove suspended substance and organic polluted water land biofiltration settling system in water with the advection form muddy water of processing through leading portion, reach the effect of sludge retention, particulate matter precipitate and separate.Water after precipitation process is collected by water shoot 14 and is discharged described precipitate and separate system by the header 8 that is arranged in the mud-water separation layer after filtration.
Case history water quality testing data in embodiment 1 and embodiment 3, in removal water, the mud-water separation effect of suspended substance and organic polluted water land biofiltration settling system is better than and adopts the traditional secondary settling tank.The utility model advantage is remarkable simultaneously, a method multiple-effect, and management operating is simple.
Claims (8)
1. remove suspended substance and organic polluted water land biofiltration settling system in water for one kind, comprise a cell body that excavates or be built at subsurface, surrounding and bottom are covered with anti seepage membrane or other sealing material, it is characterized in that in described cell body comprising successively sludge blanket, mud-water separation layer from bottom to top, described sludge blanket particle diameter of filter medium scope is 7-100mm, it is 5-80mm that the mud-water separation layer is filled out the particle diameter of filter medium scope, between described sludge blanket and mud-water separation layer, a transition layer is arranged.
2. polluted water land biofiltration settling system according to claim 1, is characterized in that described cell body top also is coated with pedosphere.
3. polluted water land biofiltration settling system according to claim 2, is characterized in that being provided with the gas collection layer between described pedosphere and mud-water separation layer, and described gas collection metafiltration material particle size range is 7-100mm.
4. polluted water land biofiltration settling system according to claim 3, is characterized in that with screen cloth shape material, separating between gas collection layer and pedosphere.
5. polluted water land biofiltration settling system according to claim 1, is characterized in that being distributed with header in the mud-water separation layer, and finally be connected with water shoot.
6. polluted water land biofiltration settling system according to claim 3, is characterized in that in the gas collection layer being distributed with a plurality of escape pipes, and described escape pipe communicates and elevate above the soil above through pedosphere with atmosphere.
7. polluted water land biofiltration settling system according to claim 1, is characterized in that described mud-water separation layer middle and lower part also is distributed with water distributor, and described water distributor is connected with water inlet pipe.
8. polluted water land biofiltration settling system according to claim 1, is characterized in that it also comprises the aerating system be comprised of gas blower, air-diffuser and connecting tube, and air-diffuser is arranged in sludge blanket, by pipeline, with gas blower, is connected.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449665A (en) * | 2013-08-16 | 2013-12-18 | 青岛理工新环境技术开发有限公司 | Land biological precipitation and filtering system for muddy water separation of sewage |
| CN109867403A (en) * | 2017-12-01 | 2019-06-11 | 中国水利水电科学研究院 | A kind of processing unit and sewage water treatment method of dispersing type sewage |
-
2013
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449665A (en) * | 2013-08-16 | 2013-12-18 | 青岛理工新环境技术开发有限公司 | Land biological precipitation and filtering system for muddy water separation of sewage |
| CN103449665B (en) * | 2013-08-16 | 2015-10-21 | 青岛理工新环境技术开发有限公司 | A kind of polluted water land biogenic sediment filtering system for mud-water separation |
| CN109867403A (en) * | 2017-12-01 | 2019-06-11 | 中国水利水电科学研究院 | A kind of processing unit and sewage water treatment method of dispersing type sewage |
| CN109867403B (en) * | 2017-12-01 | 2023-09-22 | 中国水利水电科学研究院 | Decentralized sewage treatment device and sewage treatment method |
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Granted publication date: 20140108 Termination date: 20170816 |