CN104355484A - Disposal system and method for garbage extracts - Google Patents
Disposal system and method for garbage extracts Download PDFInfo
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- CN104355484A CN104355484A CN201410562426.6A CN201410562426A CN104355484A CN 104355484 A CN104355484 A CN 104355484A CN 201410562426 A CN201410562426 A CN 201410562426A CN 104355484 A CN104355484 A CN 104355484A
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- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000000284 extract Substances 0.000 title claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 89
- 238000005188 flotation Methods 0.000 claims abstract description 30
- 238000000855 fermentation Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 8
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000001125 extrusion Methods 0.000 claims abstract description 4
- 239000002699 waste material Substances 0.000 claims description 25
- 239000002910 solid waste Substances 0.000 claims description 23
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 239000002351 wastewater Substances 0.000 claims description 17
- 239000012535 impurity Substances 0.000 claims description 16
- 238000011010 flushing procedure Methods 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- 241000894006 Bacteria Species 0.000 claims description 3
- 241000700605 Viruses Species 0.000 claims description 3
- 239000000084 colloidal system Substances 0.000 claims description 3
- 238000011109 contamination Methods 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000013467 fragmentation Methods 0.000 claims description 3
- 238000006062 fragmentation reaction Methods 0.000 claims description 3
- 239000003673 groundwater Substances 0.000 claims description 3
- 229910001385 heavy metal Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 238000002203 pretreatment Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 230000000717 retained effect Effects 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000002918 waste heat Substances 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 238000007781 pre-processing Methods 0.000 abstract 1
- 238000005273 aeration Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- -1 spiral pump Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2826—Anaerobic digestion processes using anaerobic filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a disposal system and method for garbage extracts. The system comprises a garbage extrusion device (1), a screw rod pump (6), a flotation tank (8), a buffer tank (13), a heating calcium removing device (14), an anaerobic fermenter (15), a nitrification/denitrification system (16), an ultra filtration membrane system (18), and a reverse osmosis membrane system (19) which are arranged in sequence. The method comprises the following steps: S1, squeezing garbage; S2, lifting and filtering extracts; S3, air flotation preprocessing; S4, anaerobic fermentation; S5, nitrification/denitrification and membrane processing. The system and method disclosed by the invention can improve the processing efficiency and the processing effect of the extracts of the garbage, the extracts are purified to obtain clear liquid, and the clear liquid is sent to a clear water tank, and after the clear liquid reach a standard, the clear liquid can be discharged or recycled, so that energy is saved.
Description
Technical field
The present invention relates to field of garbage disposal, more particularly, relate to disposal system and the method that liquid extruded by a kind of rubbish.
Background technology
Municipal garbage mummification and sorting are the committed steps in rubbish " innoxious, minimizing, resource utilization " comprehensive processing technique.In China's municipal garbage, inorganic impurity content is higher, affects the raising of rubbish follow-up separation and calorific value.For reducing moisture in rubbish, improving refuse classification efficiency and calorific value, before garbage drying, fragmentation, extruding and flushing are carried out to primary municipal garbage, contribute to improving garbage drying and the efficiency of separation further.But, extrude through rubbish that is broken, that extrude and rinse rubbish generation the high concentrated organic wastewater that liquid is a kind of complicated component.After testing, its solid impurity content is about 14%, and chemical oxygen demand (COD) (COD) reaches 110000-120000mg/L.Rubbish is extruded to this characteristic of liquid, need to design targetedly and extrude liquid disposing technique, to make to extrude hydroful foot concerned countries standard-required, qualified discharge after process.
Summary of the invention
The technical problem to be solved in the present invention is, the disposal system providing a kind of rubbish to extrude liquid and method, can improve rubbish and extrude liquid processing efficiency and treatment effect.
The technical solution adopted for the present invention to solve the technical problems is: construct the disposal system that liquid extruded by a kind of rubbish, comprises squeezing device for solid waste, spiral pump, air flotation pool, Buffer Pool, heating calcium-removing device, anaerobic fermentation tank, nitrated/denilrification system, ultrafiltration membrane system, reverse osmosis membrane system that order is arranged; The below of described squeezing device for solid waste is provided with extrudes liquid collecting tank, and the described liquid of extruding extruded in liquid collecting tank is delivered in described air flotation pool by described spiral pump; Described extruding between liquid collecting tank and spiral pump is provided with water diversion tank, is provided with Y-piece road strainer between described spiral pump and described air flotation pool; The top of described air flotation pool is provided with slag scraper, and the rising pipe of described air flotation pool is connected with described Buffer Pool, described Buffer Pool be also provided with the pressurizing valve, dissolving and the reducing valve that are connected successively between air flotation pool.
In such scheme, described squeezing device for solid waste is also connected with rubbish flushing arrangement, and described rubbish flushing arrangement is connected with percolate collecting tank with anaerobic fermentation tank outlet conduit.
In such scheme, the exit of described squeezing device for solid waste is provided with garbage conveying belt.
In such scheme, the bottom support plate of described squeezing device for solid waste is provided with some intensive holes.
In such scheme, the bottom of described anaerobic fermentation tank is settling tank, the top of described settling tank is followed successively by buffer zone and anaerobic reaction district, diversion column is provided with between described settling tank and buffer zone, described diversion column is suspended in the middle part of fermentor tank by the support bar be fixed on inwall, described fermentor tank is provided with water-in, described water-in is arranged on the position relative with described diversion column, the bottom in described anaerobic reaction district is provided with aerating apparatus, and the top of described fermentor tank is provided with overflow groove, water outlet and production well; Described production well is also connected with collection chamber, and described collection chamber is provided with the first arm and the second arm, and described first arm is connected with described aerating apparatus.
Utilize above-mentioned rubbish to extrude a treatment process for the disposal system of liquid, comprise the following steps:
S1, rubbish squeeze; Crude waste after fragmentation sends into squeezing device for solid waste by grab bucket of driving a vehicle, in rubbish extrusion process, rubbish flushing arrangement extracts the lower waste water flushing crude waste of solid impurity content from anaerobic fermentation tank outlet conduit and percolate collecting tank, the impurity such as the silt in crude waste are washed out, and extrudes liquid with rubbish and flow into rubbish from hole bottom squeezing device for solid waste and extrude liquid collecting tank;
S2, extrude liquid promote with filter; Under the traction of spiral pump on the ground, liquid of extruding in collecting tank is drawn to ground water diversion tank by inserting subsurface pipeline, in water diversion tank, and the contamination precipitation in percolate, supernatant liquid, then by spiral pump sucking-off, delivers to air flotation pool after Y-piece road metre filter;
S3, air supporting pre-treatment; Air flotation pool is sent in the decompression of the dissolved air water stream of pressurization, it is made to discharge the micro-bubble of dispersion, adhere to the solid in waste water or liquid particle, form water-gas-particle three-phase mixed system, after particle adhesion bubble, form apparent density be less than the flco of water and float to the water surface, form scum layer, and struck off by slag scraper and discharge from the slag-drip opening on air flotation pool top; The pretreated waste water of air supporting is discharged from rising pipe, enters Buffer Pool;
S4, anaerobically fermenting; In Buffer Pool, wastewater streams is to heating calcium-removing device, while adding thermal effluent, allows incrustation ion fouling on heating surface bank in waste liquid; Be heated to extrude liquid after 30-36 DEG C, enter anaerobic fermentation tank generation anaerobic reaction, the solid impurity extruded in liquid precipitates and discharges by the settling tank in anaerobic ferment devices, and the biogas of generation delivers to methane utilizing system, and the waste heat that methane utilizing system produces is as the thermal source of heating calcium-removing device;
S5, nitrated/denitrification and film process; Liquid effluent after anaerobically fermenting, after centrifuge is separated, enter nitrated/denilrification system, organic and inorganic nitride in removing waste liquid, the waste liquid of discharging from nitrated/denilrification system is after blue formula strainer or deep bed filter filter, enter ultrafiltration/reverse osmosis membrane system, heavy metal in waste liquid, bacterium, virus, colloid, iron rust, suspended substance, silt, larger molecular organics are retained filtration, the clear liquid after purification is sent into clean water basin qualified discharge or is recycled.
Implement disposal system and the method that liquid extruded by rubbish of the present invention, there is following beneficial effect:
1, on squeezing device for solid waste, be equipped with rubbish flushing arrangement, the waste water flushing crude waste utilizing solid impurity lower, washes out inorganic impurity in rubbish, is conducive to the sorting of follow-up rubbish and the raising of calorific value.
2, substitute with exposing to ground spiral pump the submersible pump extruded at the bottom of liquid pool, ensure stability of flow in waste liquid course of conveying, Maintenance and Repair are easy to operate, solve the problem of easy blocked, the corrosion of submersible pump simultaneously.
3, the use of water diversion tank and Y-piece road strainer, air-floating apparatus, significantly can reduce rubbish and extrude solid impurity in liquid and organic pollutant, alleviate the disposal pressure of follow-up anaerobically fermenting flow process, relieve the problem of follow-up liquid waste treatment system blocking, improve the whole efficiency of Sewage treatment systems, decrease the wearing and tearing of follow-up relevant device, improve operation rate and working efficiency.
4, build deliming platform, while adding thermal effluent, employing fouling mode removes the main incrustation ion Ca in percolate
2+, protect follow-up device for treating leachate.
5, the methane recovery that anaerobically fermenting produces is used in the equipment such as boiler or generator, in biogas utilization process.The waste heat produced as the thermal source of well heater, for anaerobically fermenting provides suitable temperature condition.
6, in anaerobic ferment devices, adopt the mode of biogas inner circulating aerating, make the active sludge in anaerobic reaction district keep fluidized bed state, waste water fully contacts with active sludge, and anaerobic reaction efficiency improves; Save the energy consumption needed for extra aeration or stirring operation; Replace stirring operation with aeration, be conducive to extruding the precipitation of silt in liquid, prevent settling region silt to the interference of anaerobic reaction.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation that the disposal system of liquid extruded by rubbish of the present invention;
Fig. 2 is the structural representation of anaerobic fermentation tank;
Fig. 3 is the structural representation of diversion column in Fig. 2.
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 1, the disposal system that liquid extruded by rubbish of the present invention comprises squeezing device for solid waste 1 that order arranges, spiral pump 6, air flotation pool 8, Buffer Pool 13, heating calcium-removing device 14, anaerobic fermentation tank 15, nitrated/denilrification system 16, ultrafiltration membrane system 18, reverse osmosis membrane system 19.
The below of squeezing device for solid waste 1 is provided with extrudes liquid collecting tank 4, and the liquid of extruding extruded in liquid collecting tank 4 is delivered in air flotation pool 8 by spiral pump 6.Extrude between liquid collecting tank 4 and spiral pump 6 and be provided with water diversion tank 5, between spiral pump 6 and air flotation pool 8, be provided with Y-piece road strainer 7.The top of air flotation pool 8 is provided with slag scraper 9, and the rising pipe of air flotation pool 8 is connected with Buffer Pool 13, is also provided with the pressurizing valve 12, dissolving 11 and the reducing valve 10 that are connected successively between Buffer Pool 13 with air flotation pool 8.Nitrated/between denilrification system 16 and anaerobic fermentation tank 15, to be provided with whizzer, nitrated/between denilrification system 16 and ultrafiltration membrane system 18, strainer 17 is set, can be blue formula strainer or deep bed filter.
Squeezing device for solid waste 1 is also connected with rubbish flushing arrangement 2, and rubbish flushing arrangement 2 is connected with percolate collecting tank 21 with anaerobic fermentation tank 15 outlet conduit.The exit of squeezing device for solid waste 1 is provided with garbage conveying belt 3, and the bottom support plate of squeezing device for solid waste 1 is provided with some intensive holes.
Further, as Fig. 2, shown in Fig. 3, the bottom of anaerobic fermentation tank 15 is settling tank 1504, the top of settling tank 1504 is followed successively by buffer zone 1506 and anaerobic reaction district 1507, diversion column 1505 is provided with between settling tank 1504 and buffer zone 1506, diversion column 1505 is suspended in the middle part of fermentor tank 15 by the support bar 1501 be fixed on inwall, fermentor tank 15 is provided with water-in, water-in is arranged on the position relative with diversion column 1505, the bottom in anaerobic reaction district 1507 is provided with aerating apparatus 1502, the top of fermentor tank 15 is provided with overflow groove 1509, water outlet and production well 1510, production well 1510 is also connected with collection chamber 1513, and collection chamber 1513 is provided with the first arm 1511 and the second arm 1512, first arm 1511 is connected with aerating apparatus 1502.
Further, the first arm 1511 is provided with frequency conversion fan 1508, can regulate aeration speed.
Further, the first arm 1511 or the second arm 1512 are provided with gas meter.
Further, the bottom of settling tank 1504 is provided with shore pipe 1503, and the bottom of settling tank 1504 is provided with manhole, is convenient to carry out spoil disposal dredging.
Further, anaerobic reaction district 1507 is provided with redox potential electrode, temp probe and pressure probe.Redox electrode is for testing pH value and current potential.
Further, be respectively equipped with a visor at overflow groove 1509 top of anaerobic fermentation tank 15, collection chamber 1513, the top of anaerobic fermentation tank 15, middle part, bottom are provided with some thief holes.
Present invention also offers a kind of waste disposal method utilizing above-mentioned rubbish to extrude the disposal system of liquid, comprise the following steps:
S1, rubbish squeeze;
In rubbish extrusion process, rubbish flushing arrangement extracts the lower waste water flushing crude waste of solid impurity content from anaerobic fermentation tank 15 outlet conduit and percolate collecting tank 21, the impurity such as the silt in crude waste are washed out, and extrudes liquid with rubbish and flow into rubbish from hole bottom squeezing device for solid waste 1 and extrude liquid collecting tank 4.Rubbish after extruding then falls into the garbage conveying belt 3 of squeezing device for solid waste 1 front lower, is sent to downstream.
S2, extrude liquid promote with filter;
Under the traction of spiral pump 6 on the ground, liquid of extruding in collecting tank is drawn to ground water diversion tank 5 by inserting subsurface pipeline, in water diversion tank 5, and the contamination precipitation in percolate, supernatant liquid, then by spiral pump 6 sucking-off, delivers to air flotation pool 8 after Y-piece road strainer 7 filters;
S3, air supporting pre-treatment;
Extrude liquid through the rubbish of preliminary sedimentation, filtration to be pumped and to enter air flotation pool 8, air flotation pool 8 is sent in the decompression of the dissolved air water stream of pressurization simultaneously, it is made to discharge the micro-bubble of high dispersing, adhere to the solid in waste water or liquid particle, form water-gas-particle three-phase mixed system, after particle adhesion bubble, form apparent density be less than the flco of water and float to the water surface, form scum layer, and struck off by slag scraper 9 and discharge from the slag-drip opening on air flotation pool 8 top, reach the object removed and extrude part solid impurity and organic pollutant in liquid.The pretreated waste water of air supporting is discharged from a little more than the rising pipe at the bottom of pond, enters Buffer Pool 13.
S4, anaerobically fermenting;
In Buffer Pool 13, waste water flow to heating calcium-removing device 14 from pond upper pipe.While adding thermal effluent, allow incrustation ion Ca in waste liquid
2+, Mg
2+deng fouling on heating surface bank, the heating surface bank that fouling is extracted in timing out is placed on scale removal platform, scrapes off foulant, then can reach and remove Ca in waste liquid
2+object.Be heated to the waste liquid after 30-36 DEG C, flow out from this bottom of device outlet conduit, enter the buffer zone of anaerobic fermentation tank 15.
Rubbish is extruded after liquid enters anaerobic fermentation tank 15 from inlet channel, and under the effect of diversion column 1505, flow direction is rapidly to lower change, and extrude solid impurity in liquid also with water (flow) direction, shift to rapidly at the bottom of pond, precipitate at the bottom of pond, upper strata forms clear liquid.The solid impurity of precipitation is discharged by the spoil disposal pipeline 1503 bottom anaerobic fermentation tank 15.Remove the liquid of extruding of silt to rise gradually, contact at bacterial classifications such as anaerobic reaction district 1507 and active sludge, generation anaerobic reaction.The biogas that anaerobic reaction produces rises to reactor head, drains into collection chamber 1513, in order to later use, such as, burn, generate electricity from the production well 1510 of reactor.Liquid after anaerobic reaction flows out from the overflow groove 1509 at anaerobic fermentation tank 15 top.Anaerobic reaction occurs in the process that waste water contacts with mud granule, for forming mud fluidized-bed response behaviour in anaerobic reaction district 1507, part biogas in collection chamber 1513 is passed into from the aerating apparatus 1502 bottom anaerobic reaction district 1507 in the mode of aeration by the first arm 1511, form biogas internal recycle, the microorganisms such as the waste water in stirring anaerobic reaction district 1507 and active sludge, make it fully contact, and then improve anaerobic reaction efficiency.Part biogas in collection chamber 1513 is utilized by the second arm 1512.The height of this anaerobic fermentation tank 15 is greater than 2:1 with diameter ratio, and to make extruding liquid, the residence time is greater than 20 days in the reactor.
S5, nitrated/denitrification and film process; Liquid effluent after anaerobically fermenting, enter nitrated/denilrification system 16, organic and inorganic nitride in removing waste liquid, the waste liquid of discharging from nitrated/denilrification system 16 is after blue formula strainer or deep bed filter filter, enter ultrafiltration/reverse osmosis membrane system 19, heavy metal in waste liquid, bacterium, virus, colloid, iron rust, suspended substance, silt, larger molecular organics are retained filtration, and the clear liquid after purification is sent into clean water basin 20 qualified discharge or is recycled.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (6)
1. the disposal system of liquid extruded by a rubbish, it is characterized in that, comprise the squeezing device for solid waste squeezing device for solid waste (1) of order setting, spiral pump (6), air flotation pool (8), Buffer Pool (13), heating calcium-removing device (14), anaerobic fermentation tank (15), nitrated/denilrification system (16), ultrafiltration membrane system (18), reverse osmosis membrane system (19); The below of described squeezing device for solid waste (1) is provided with extrudes liquid collecting tank (4), and the described liquid of extruding extruded in liquid collecting tank (4) is delivered in described air flotation pool (8) by described spiral pump (6); Described extruding between liquid collecting tank (4) and spiral pump (6) is provided with water diversion tank (5), is provided with Y-piece road strainer (7) between described spiral pump (6) and described air flotation pool (8); The top of described air flotation pool (8) is provided with slag scraper (9), the rising pipe of described air flotation pool (8) is connected with described Buffer Pool (13), is also provided with the pressurizing valve (12), dissolving (11) and the reducing valve (10) that are connected successively between described Buffer Pool (13) with air flotation pool (8).
2. the disposal system of liquid extruded by rubbish according to claim 1, it is characterized in that, described squeezing device for solid waste (1) is also connected with rubbish flushing arrangement (2), and described rubbish flushing arrangement (2) is connected with percolate collecting tank (21) with anaerobic fermentation tank (15) outlet conduit.
3. the disposal system of liquid extruded by rubbish according to claim 1, it is characterized in that, the exit of described squeezing device for solid waste (1) is provided with garbage conveying belt (3).
4. the disposal system of liquid extruded by rubbish according to claim 1, it is characterized in that, the bottom support plate of described squeezing device for solid waste (1) is provided with some intensive holes.
5. the disposal system of liquid extruded by rubbish according to claim 1, it is characterized in that, the bottom of described anaerobic fermentation tank (15) is settling tank (1504), the top of described settling tank (1504) is followed successively by buffer zone (1506) and anaerobic reaction district (1507), diversion column (1505) is provided with between described settling tank (1504) and buffer zone (1506), described diversion column (1505) is suspended in the middle part of fermentor tank (15) by the support bar (1501) be fixed on inwall, described fermentor tank (15) is provided with water-in, described water-in is arranged on the position relative with described diversion column (1505), the bottom of described anaerobic reaction district (1507) is provided with aerating apparatus (1502), the top of described fermentor tank (15) is provided with overflow groove (1509), water outlet and production well, described production well is also connected with collection chamber (1513), described collection chamber (1513) is provided with the first arm (1511) and the second arm (1512), and described first arm (1511) is connected with described aerating apparatus (1502).
6. utilize the rubbish described in claim 1 to extrude a treatment process for the disposal system of liquid, it is characterized in that, comprise the following steps:
S1, rubbish squeeze; Crude waste after fragmentation sends into squeezing device for solid waste (1) by grab bucket of driving a vehicle, in rubbish extrusion process, rubbish flushing arrangement extracts the lower waste water flushing crude waste of solid impurity content from anaerobic fermentation tank (15) outlet conduit and percolate collecting tank (21), the impurity such as the silt in crude waste are washed out, and with rubbish extrude liquid from squeezing device for solid waste (1) bottom hole flow into rubbish extrude liquid collecting tank (4);
S2, extrude liquid promote with filter; Under the traction of spiral pump (6) on the ground, liquid of extruding in collecting tank is drawn to ground water diversion tank (5) by inserting subsurface pipeline, in water diversion tank (5), contamination precipitation in percolate, supernatant liquid, then by spiral pump (6) sucking-off, delivers to air flotation pool (8) after Y-piece road strainer (7) filters;
S3, air supporting pre-treatment; Air flotation pool (8) is sent in the decompression of the dissolved air water stream of pressurization, it is made to discharge the micro-bubble of dispersion, adhere to the solid in waste water or liquid particle, form water-gas-particle three-phase mixed system, after particle adhesion bubble, form apparent density be less than the flco of water and float to the water surface, form scum layer, and struck off by slag scraper (9) and discharge from the slag-drip opening on air flotation pool (8) top; The pretreated waste water of air supporting is discharged from rising pipe, enters Buffer Pool (13);
S4, anaerobically fermenting; Wastewater streams is to heating calcium-removing device (14) in Buffer Pool (13), while adding thermal effluent, allows incrustation ion fouling on heating surface bank in waste liquid; Be heated to extrude liquid after 30-36 DEG C, enter anaerobic fermentation tank (15) and anaerobic reaction occurs, the solid impurity extruded in liquid precipitates and discharges by the settling tank (1504) in anaerobic ferment devices, the biogas produced delivers to methane utilizing system, and the waste heat that methane utilizing system produces is as the thermal source of heating calcium-removing device (14);
S5, nitrated/denitrification and film process; Liquid effluent after anaerobically fermenting, after centrifuge is separated, enter nitrated/denilrification system (16), organic and inorganic nitride in removing waste liquid, the waste liquid of discharging from nitrated/denilrification system (16) is after blue formula strainer or deep bed filter filter, enter ultrafiltration/reverse osmosis membrane system (19), heavy metal in waste liquid, bacterium, virus, colloid, iron rust, suspended substance, silt, larger molecular organics are retained filtration, and the clear liquid after purification is sent into clean water basin (20) qualified discharge or is recycled.
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