CN102241463B - Sludge washing and biological treatment system and method - Google Patents
Sludge washing and biological treatment system and method Download PDFInfo
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- CN102241463B CN102241463B CN2011101064454A CN201110106445A CN102241463B CN 102241463 B CN102241463 B CN 102241463B CN 2011101064454 A CN2011101064454 A CN 2011101064454A CN 201110106445 A CN201110106445 A CN 201110106445A CN 102241463 B CN102241463 B CN 102241463B
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Abstract
The invention relates to a sludge washing and biological treatment system and a sludge washing and biological treatment method. In the invention, a sludge washing process is adopted to wash out organic substances in the sludge, the separated inorganic substances and a very small amount of persistent dust are buried so as not to pollute underground water sources, surrounding environment and atmosphere environment, and thus, the bad impression of sludge on people is changed radically; and the organic sludge washed out is blended with straw and the mixture is subjected to high-temperature anaerobic digestion treatment, the carbon-nitrogen ratio of the sludge is improved, and the stability and operability of the digestion system are increased. In the invention, the engineering design adopts a buried concrete structure, the construction cost is low, and compared with a sludge biological treatment plant of the same treatment capacity, the investment is more than 9/10 lower. When the system and the method are used, the sludge biological treatment efficiency is high, the sludge biological treatment speed is high, the sludge biological treatment cost is low, the methane and organic fertilizer yield is high, and as the byproducts of the treatment create income, great benefit can be created without subsidies from government finance.
Description
Technical field
The present invention relates to a kind of sewage work sludge treatment technology that the precipitating sludge that produces, municipal water drain produce of disposing of sewage, particularly relate to the system and method for a kind of mud washing, biological treatment.
Background technology
The WWT work of China has in recent years had unprecedented development, and enormous function is playing aspect solution China water pollution problems in sewage work, has alleviated the crisis that China's water pollutes to a great extent.But; How safe handling is felt simply helpless with disposing to a large amount of precipitating sludges in most sewage works; Because producing a large amount of precipitating sludges after the WWT stacks nowhere; A lot of sewage works have faced the awkward situation that stops to run, and have 80% mud not dealt carefully with, and mud has become most sewage works problem demanding prompt solution.Present technical development is difficult to realize the sludge treatment net earnings, is example with the sludge anhydration burning generating, and the cost of sludge drying will be far above the burning electricity generation profit brought.The thalline and the organic colloidal matter that contain a large amount of mikrobes in the mud; Cause the big dehydration difficulty of mud viscosity; Adopt the method for mechanical dehydration can only water ratio be reduced to about 80% usually, it is that subsequent disposal is brought numerous difficulties that mud contains a large amount of water, has strengthened the sludge treatment expense.The existing processing of mud, method of disposal, the agricultural meeting of mud is related with the mankind's food chain, has very big risk; Mud landfill polluted underground water source, there is the phenomenon of rejecting mud in most of refuse landfill; The sludge incineration one-time investment is huge, does not reach calorific value during burning and expends too much heat, causes serious topsoil; Anaerobic Digestion is the optimum handling method, but treatment plant's investment is big, and processing costs is high, does not have the government finance subsidy to be difficult to profit, and huge fiscal subsidy bring heavy burden for local government's finance.
C/N ratio (C:N) 6～30:1 that the organism anaerobic digestion is suitable; But that everybody generally acknowledged effect is more satisfactory is 25:1; The C/N ratio of precipitating sludge is 5:1, and the high concentration sludge anaerobic digestion almost is infeasible, causes the failure of Digestive system ammonia poisoning Digestive tract easily.
Summary of the invention
The present invention is directed to the prior art deficiency, propose the system and method for a kind of mud washing, biological treatment.At first adopt the mud washing process, wash out organic substance in the mud, separate inorganics and be difficult for decomposing rubbish outward transport landfill, organic sludge is concentrated carry out the thermophilic digestion processing again.
The technical scheme that the present invention adopted:
A kind of mud washing system; Contain the mud wash trough; Organic sludge settling tank and clarification hold well, said mud wash trough, organic sludge settling tank and clarification hold well adopt buried design, and lowest part is domatic to the bottom surface from the mud entrance end in the bottom surface of mud wash trough; The bottom surface lowest part is provided with sludge pump and pipeline is communicated with the import of mud wash trough forward mud; Said organic sludge settling tank is in abutting connection with the mud wash trough, and its bottom surface is lower than the bottom surface lowest part of mud wash trough, and the mud wash trough is provided with the washing sludge outlet with the shared partition wall upper end of organic sludge settling tank and is communicated with organic mudpan; Said clarification hold well is arranged on the end of the relative side of washing mud import in the organic sludge settling tank; Its well head height is lower than the washing mud import of organic sludge settling tank, is provided with sump pump in the clarification hold well, and said sump pump is communicated with the mud import of mud wash trough and the Sewage treatment systems or the Sewage Plant settling tank of back level through pipeline.
The adjacent high concentration organic mud storage pool that is provided with of described mud washing system with said organic sludge settling tank; The said mud wash trough bottom surface gradient is 35～50 degree, and the washing sludge outlet place of the partition wall upper end that mud wash trough and organic sludge settling tank are shared is provided with grid, and the aperture of said grid is between 1～3cm; Said organic sludge settling tank is provided with the sludge pump pipeline and is communicated with sludge dewatering equipment, and said sludge dewatering equipment is provided with Sewage treatment systems or the Sewage Plant settling tank that sludge pipe and sewer line are communicated with high concentration organic mud storage pool and back grade respectively; The well head height of said clarification hold well is 2/3rds of the organic sludge settling tank degree of depth.
Described mud washing system; Contain inorganic refuse, be difficult for decomposing the garbage dewatering pond; Mud wash trough bottom surface lowest part is provided with sludge pump and pipeline is communicated with inorganic refuse, is difficult for decomposing the garbage dewatering pond; Said inorganic refuse, be difficult for decomposing the garbage dewatering pond and be located on the face of land, is the gradient domatic between the 5-10 degree at the bottom of the pond, inorganic refuse, be difficult for decomposing pond, garbage dewatering pond at the bottom of a minimum side do not have enclosure wall; Lowest part pond basifacial is provided with sewage routeway connection mud wash trough at the bottom of the pond, the metal double-edged fine-toothed comb is installed above the sewage routeway stops that inorganic refuse passes through; The top of said mud wash trough, organic sludge settling tank, clarification hold well, high concentration organic mud storage pool is provided with sludge pump and pipelining hole, and pipeline and valve thereof are installed in the space outerpace of each pond body.
A kind of sludge organism treatment system that contains said mud washing system; Also comprise the stalk pretreatment system, the system that gets the raw materials ready and anaerobic digester system; Said stalk pretreatment system contains HP steam jar and stalk reactor for hydrolysis and acidification; Feed proportioning system contains the pond of getting the raw materials ready, basic soln pond, and the high-enriched organics mud storage pool of mud washing system is provided with the sludge pump pipeline and is communicated with the pond of getting the raw materials ready; The HP steam jar of said stalk pretreatment system is provided with the heating steam import and is communicated with steam boiler; And be provided with the basic soln import and be communicated with the basic soln pond; Stalk reactor for hydrolysis and acidification top is provided with slaking stalk opening for feed, sludge pump installing port and natural pond fertilizer, self-circulation conduit entrance; Said stalk reactor for hydrolysis and acidification bottom is provided with submerged type reamer kibbler; The natural pond is fertile, the self-circulation conduit entrance is communicated with the pond of getting the raw materials ready through self-circulating pump, pipeline and filtration unit, and the pond of getting the raw materials ready connects anaerobic digester system through the material conveying device.
Described sludge organism treatment system, anaerobic digester system contain ultrahigh-temperature reactor for hydrolysis and acidification, ultrahigh-temperature transient response device, high temperature methane-producing reactor; Said ultrahigh-temperature reactor for hydrolysis and acidification, ultrahigh-temperature transient response device and high temperature methane-producing reactor are communicated with through the party wall bottom windows each other, and last high temperature methane-producing reactor is provided with the fertile sludge pump of extracting out in natural pond; Each reactor drum is provided with basic soln, the fertile reflux line inlet in natural pond, sludge pump installing port and pipeline and imports and exports; Each reactor drum is provided with on-line temperature monitoring appearance, pH value monitor, content gauge, concentration monitor, redox potential monitor, and lower peripheral wall is provided with thermal insulation layer on each reactor drum.
Described sludge organism treatment system; Ultrahigh-temperature reactor for hydrolysis and acidification, ultrahigh-temperature transient response device, high temperature methane-producing reactor inner bottom part are equipped with the device that blows floating, and the conduit entrance that blows floating of the said device that blows floating is introduced from each reactor head and connected autodigestion fluid circulation and reflux gas high-pressure system; Said stalk reactor for hydrolysis and acidification and high temperature methane-producing reactor respectively adopt 2-5 reactor drum to form.
A kind of sludge organism treatment process adopts described sludge organism treatment system, and the method that adopts mud, stalk blend to handle is carried out biochemical treatment to mud,
At first, with putting into the pressure pan high temperature steaming behind the agricultural crop straw sprinkling basic soln of pulverizing grassization;
Then, the crop stalk of slaking is poured in the stalk pretreatment reaction device, added natural pond liquid, natural pond fertilizer or stalk acidizing fluid, make in the stalk pretreatment reaction device material dry solid content 10～12%;
The 3rd, seal stalk pretreatment reaction device, heating makes stalk pretreatment reaction device keep the Digestive system temperature at 65～68 degree, and open the reamer kibbler when heating and stir Digestive system with dispersion localized hyperthermia, and with the further refinement of stalk granularity; Crop stalk hydrolytic acidification time 4～12 days;
The 4th; Ratio according to weight part 1～1.5:1; With the high concentration organic mud of solids content 10～12% and the stalk solution suction of the half acidication pond of getting the raw materials ready, add basic soln respectively to the pond of getting the raw materials ready, make in the pond of getting the raw materials ready and after ph value of mixture 6～6.5;
The 5th; Mixed solution is conveyed into anaerobic digester system, sneaks into natural pond fertilizer or bacterial classification simultaneously, carry out Anaerobic Digestion into inlet amount 25-35%.
Described sludge organism treatment process, a methanogen breeding multiplication generation needs 5 hours, and anaerobic digester system treatment capacity every day is divided into 5 chargings, and the pond of getting the raw materials ready is set per 4～6 hours from the charging of ultrahigh-temperature acidification reactor once.
Said sludge organism treatment process, anaerobic digester system contain ultrahigh-temperature reactor for hydrolysis and acidification, ultrahigh-temperature transient response device and several high temperature methane-producing reactors; Ultrahigh-temperature acidification reactor design temperature 65-68 degree, pH value is 6-6.5; Ultrahigh-temperature transient response device design temperature 58-61 degree, pH value 6.5-7; High temperature methane-producing reactor design temperature 53-56 degree, pH value 6.8-7.5.
Said sludge organism treatment process; Through said mud washing system; Sewage work settling tank mud collected to pump in the mud wash trough wash, not labile solid deposits is in the wash trough bottom in the mud, and light soluble organic matter flows into together in the organic sludge settling tank with sewage and precipitates; The mud that is deposited in wash trough bottom by sludge pump constantly behind the pond bottom extract out and pump into the anterior repetitive scrubbing of wash trough; Dewatering in the not labile solid refuse suction inorganic refuse of wash trough bottom accumulation, the difficult garbage dewatering pond of decomposing, deviates from effluent stream and return wash trough, and not labile solid refuse is transported outward landfill after dewatering; Mud in the organic sludge settling tank pumps into the sludge dewatering equipment dehydration through deposition.
Useful positively effect of the present invention:
1, mud washing of the present invention, biological treatment system and method adopt the mud washing process, wash out organic substance in the mud, separate inorganics and are difficult for decomposing minute quantity rubbish outward transport landfill, and the wet sludge volume of compression is more than 98.5%; Mud washes out behind the organic substance again that landfill can not pollute underground water source, surrounding enviroment, atmospheric environment, has thoroughly changed the abominable image that mud causes to people.
2, mud washing of the present invention, biological treatment system and method, handling each treatment plant of mud just needs a few kiloton stalks every year, and discarded in a large number stalk is used effectively, and not only alleviates stalk and prohibits the burning government burden, also develops a way to become rich for friend peasant.
3, mud washing of the present invention, biological treatment system and method, less investment, engineering adopt buried, concrete structure digestion reactor design, and construction costs is cheap, compare under-capitalization 1/10th with the sludge organism treatment plant of same treatment ability; Efficient is high, adopts technologies such as ultrahigh-temperature anaerobic digestion, multistage anaerobic digestion, natural pond slag be floating to improve digestive efficiency and speed greatly; Running cost is low, and the maintenance of the equipment amount is few, the self-produced biogas of energy consumption, and mud, stalk blend are handled, and biogas, fertilizer output significantly improve, and handle the sub product extra earning that produces, and also can not obtain better economic benefits even government finance is not subsidized fund.
4, mud washing of the present invention, biological treatment system and method are handled mud locally, have reduced transport charge and secondary pollution, have reduced the environmental pollution that crop straw burning brings simultaneously; Sludge organism is handled from storing, wash, digest, utilize omnidistance sealing, can not leak by frowziness, and the sub product that produces after the processing all utilizes, and changes harmful to treasure harmful mud.
5, mud washing of the present invention, biological treatment system and method, system stability is strong, and complete function is applied widely, can also handle restaurant, dining room changing food waste and septic tank soiled litter, municipal sewage sludge etc.; Its less investment, operation mode is laid a good foundation for realizing China's sludge organism Processing Industryization cheaply.
Description of drawings
Fig. 1: mud washing system structural representation of the present invention;
Fig. 2: mud washing of the present invention, biological treatment system structural representation.
Embodiment
Embodiment one: referring to Fig. 1; Mud washing system of the present invention; Contain mud wash trough 1; Organic sludge settling tank and clarification hold well 3, said mud wash trough, organic sludge settling tank and clarification hold well adopt buried design, and lowest part is domatic to the bottom surface from the mud entrance end in the bottom surface of mud wash trough 1; The bottom surface lowest part is provided with sludge pump 4 and pipeline is communicated with the 1 forward mud import of mud wash trough; Said organic sludge settling tank 2 is in abutting connection with mud wash trough 1, and its bottom surface is lower than the bottom surface lowest part of mud wash trough, and mud wash trough 1 is provided with washing sludge outlet 5 with organic sludge settling tank 2 shared partition wall upper ends and is communicated with organic mudpan 2; Said clarification hold well 3 is arranged on the end of the relative side of washing mud import (being the washing sludge outlet 5 of mud wash trough) in the organic sludge settling tank 2; Its well head height is lower than the washing mud import of organic sludge settling tank 2, is provided with sump pump 6 in the clarification hold well 3, and said sump pump 6 is communicated with the mud import of mud wash trough 1 and the Sewage treatment systems or the Sewage Plant settling tank of back level through pipeline.
Embodiment two: referring to Fig. 1; The mud washing system of present embodiment; Different with embodiment one is: the bottom surface gradient of said mud wash trough 1 is 35～50 degree; Washing sludge outlet 5 places of the partition wall upper end that mud wash trough 1 and organic sludge settling tank 2 are shared are provided with grid, and the aperture of said grid is between 1～3cm; System also is provided with high concentration organic mud storage pool 7; Said high concentration organic mud storage pool 7 and the 2 adjacent settings of organic sludge settling tank; Organic sludge settling tank 2 is provided with the sludge pump pipeline and is communicated with the sludge dewatering equipment (not shown), and said sludge dewatering equipment is provided with Sewage treatment systems or the Sewage Plant settling tank that sludge pipe and sewer line are communicated with high concentration organic mud storage pool 7 and back grade respectively; The well head height of said clarification hold well 3 is 2/3rds of organic sludge settling tank 2 degree of depth.
Embodiment three: the mud washing system of present embodiment, also contain inorganic refuse, be difficult for decomposing the garbage dewatering pond; Mud wash trough bottom surface lowest part is provided with sludge pump and pipeline is communicated with inorganic refuse, is difficult for decomposing the garbage dewatering pond; Said inorganic refuse, the difficult garbage dewatering pond of decomposing are located on the face of land; At the bottom of the pond gradient domatic between the 5-10 degree; A minimum side does not have enclosure wall at the bottom of inorganic refuse, the difficult decomposition pond, garbage dewatering pond, and lowest part pond basifacial is provided with sewage routeway connection mud wash trough at the bottom of the pond, the metal double-edged fine-toothed comb is installed above the sewage routeway stops that inorganic refuse passes through; The top of said mud wash trough, organic sludge settling tank, clarification hold well, high concentration organic mud storage pool is provided with sludge pump and pipelining hole, and pipeline and valve thereof are installed in the space outerpace of each pond body.
Embodiment four: referring to Fig. 1, Fig. 2, present embodiment is the sludge organism treatment system that contains the said mud washing system of previous embodiment.Said sludge organism treatment system contains stalk pretreatment system, feed proportioning system, anaerobic digester system; Said stalk pretreatment system contains HP steam jar and stalk reactor for hydrolysis and acidification 8; Feed proportioning system contains the pond 9 of getting the raw materials ready, basic soln pond 10, and the high-enriched organics mud storage pool 7 of mud washing system is provided with the sludge pump pipeline and is communicated with the pond 9 of getting the raw materials ready; The HP steam jar of said stalk pretreatment system is provided with the heating steam import and is communicated with steam boiler; And be provided with the basic soln import and be communicated with basic soln pond 10; Stalk reactor for hydrolysis and acidification 8 tops are provided with slaking stalk opening for feed, sludge pump installing port and natural pond fertilizer, self-circulation conduit entrance; The bottom of said stalk reactor for hydrolysis and acidification 8 is provided with submerged type reamer kibbler; The natural pond is fertile, the self-circulation conduit entrance is communicated with the pond 9 of getting the raw materials ready through self-circulating pump, pipeline and filtration unit, and the pond 9 of getting the raw materials ready connects anaerobic digester system through the material conveying device.
Embodiment five: referring to Fig. 1, Fig. 2, and the sludge organism treatment system of present embodiment, different with embodiment four is: anaerobic digester system contains ultrahigh-temperature reactor for hydrolysis and acidification 11, ultrahigh-temperature transient response device 12, high temperature methane-producing reactor 13; Said ultrahigh-temperature reactor for hydrolysis and acidification 11, ultrahigh-temperature transient response device 12 and high temperature methane-producing reactor 13 are communicated with through the party wall bottom windows each other; High concentration organic mixed solution and backflow natural pond fertilizer get into the ultrahigh-temperature transient response device from the ultrahigh-temperature acidification reactor, and last high temperature methane-producing reactor is provided with the fertile sludge pump of extracting out in natural pond; Each reactor drum is provided with basic soln, the fertile reflux line inlet in natural pond, sludge pump installing port and pipeline and imports and exports; Each reactor drum is provided with on-line temperature monitoring appearance, pH value monitor, content gauge, concentration monitor, redox potential monitor, and lower peripheral wall is provided with thermal insulation layer on each reactor drum.Stalk reactor for hydrolysis and acidification 8 adopts staged reactor with high temperature methane-producing reactor 13.
Described sludge organism treatment system; Ultrahigh-temperature reactor for hydrolysis and acidification, ultrahigh-temperature transient response device, high temperature methane-producing reactor inner bottom part are equipped with the device that blows floating, and the conduit entrance that blows floating of the said device that blows floating is introduced from each reactor head and connected autodigestion fluid circulation and reflux gas high-pressure system.
Embodiment six: referring to Fig. 1, Fig. 2, present embodiment is a kind of sludge organism treatment process:
At first, with putting into the pressure pan high temperature steaming behind the agricultural crop straw sprinkling basic soln of pulverizing grassization;
Then, the crop stalk of slaking is poured in the stalk pretreatment reaction device, added natural pond liquid, natural pond fertilizer or stalk acidizing fluid, make in the stalk pretreatment reaction device material dry solid content 10～12%;
The 3rd, seal stalk pretreatment reaction device, heating makes stalk pretreatment reaction device keep the Digestive system temperature at 65～68 degree, and open the reamer kibbler when heating and stir Digestive system with dispersion localized hyperthermia, and with the further refinement of stalk granularity; Crop stalk hydrolytic acidification time 4～12 days;
The 4th; Ratio according to weight part 1～1.5:1; With the high concentration organic mud of solids content 10～12% and the stalk solution suction of the half acidication pond of getting the raw materials ready, add basic soln respectively to the pond of getting the raw materials ready, make in the pond of getting the raw materials ready and after ph value of mixture 6～6.5;
The 5th; Mixed solution is conveyed into anaerobic digester system, sneaks into 25～35% natural pond fertilizer or bacterial classification simultaneously, carry out Anaerobic Digestion into inlet amount.
Embodiment seven: referring to Fig. 1, Fig. 2, and the sludge organism treatment system and the method for present embodiment, anaerobic digester system contains ultrahigh-temperature reactor for hydrolysis and acidification, ultrahigh-temperature transient response device and several high temperature methane-producing reactors; When the high concentration organic mixed solution got into the ultrahigh-temperature acidification reactor from the pond of getting the raw materials ready, the natural pond fertilizer of 25-35% inlet amount or bacterial classification also got into simultaneously; Ultrahigh-temperature acidification reactor design temperature 65-68 degree, pH value is 6-6.5; Ultrahigh-temperature transient response device design temperature 58-61 degree, pH value 6.5-7; High temperature methane-producing reactor design temperature 53-56 degree, pH value 6.8-7.5.
When the organic liquid mixture after the neutralization pumped into the ultrahigh-temperature acidification reactor from the pond of getting the raw materials ready, sludge pump was provided with filter screen and stops that the above solid matter of 1cm gets into reactor drum, and the bottom, pond of getting the raw materials ready is provided with submerged type reamer kibbler fragmenting bulk solid matter; A methanogen breeding multiplication generation needs about 5 hours, and anaerobic digester system treatment capacity every day is divided into 5 chargings, and the pond of getting the raw materials ready is set about every 4-6 hour from the charging of ultrahigh-temperature acidification reactor once; Basic soln also pumps into pressure pan and invades wet stalk and pump in the anaerobic digestion reaction vessel and the Digestive system potential of hydrogen.
Mud washing of the present invention, biological treatment system and method; Through said mud washing system; Sewage work settling tank mud collected to pump in the mud wash trough wash; After precipitating sludge pumped into wash trough, not labile solid deposits was in the wash trough bottom in the mud, and light soluble organic matter flows into together in the organic sludge settling tank with sewage and precipitates; The mud that is deposited in wash trough bottom by sludge pump constantly behind the pond bottom extract out and pump into the anterior repetitive scrubbing of wash trough; Dewatering in the not labile solid refuse suction inorganic refuse of wash trough bottom accumulation, the difficult garbage dewatering pond of decomposing, deviates from effluent stream and return wash trough, and not labile solid refuse is transported outward landfill after dewatering; Mud pumps into the sludge dewatering equipment dehydration through deposition in the organic sludge settling tank, and dehydrated sludge concentration 10-12% (solids content) pumps in the high concentration sludge storage pool and stores.
Embodiment eight: the washing of present embodiment mud, biological treatment system and method; The stalk pretreatment technology: purchase peasant's corn straw (or other stalks) is through pulverizing grassization; Be compressed into the convenient transportation of rectangle bale; The not ultra 0.5cm of grass bar maximum diameter at first sprays basic soln with the teosinte bar and puts into the pressure pan high temperature steaming; The teosinte bar of slaking is poured in the stalk pretreatment reaction device, suitably added natural pond liquid, natural pond fertilizer or stalk acidizing fluid (bacterial classification), make in the reactor drum material dry solid content at 10-12%; Closed reactor keeps Digestive system temperature 65-68 degree, and reactor bottom is provided with submerged type reamer kibbler, with the refinement of teosinte rod granule degree, adopts high-temperature steam directly to heat, and opens kibbler when heating and stirs Digestive system dispersion localized hyperthermia; Be provided with three stalk pretreatment reaction devices, remain on respectively that slaking is reinforced, acidication, batching use each stage, each reactor drum hydrolysis acidifying teosinte bar solution can supply 4 days consumptions of anaerobic digestion reaction vessel, teosinte bar hydrolytic acidification time 4-12 days.
Anaerobic digestion process: according to 1.5:1 (dry matter weight) ratio; Respectively with the high-enriched organics mud of concentration 10-12% (solids content) and the stalk solution suction of the half acidication pond of getting the raw materials ready; According to the ph value of mixture data; The basic soln of extracting some amount from the basic soln pond out gets into the pond of getting the raw materials ready and acidity, the pH value 6-6.5 after the neutralization; When the organic liquid mixture after the neutralization pumped into the ultrahigh-temperature acidification reactor from the pond of getting the raw materials ready, sludge pump was provided with filter screen and stops that the above solid matter of 1cm gets into reactor drum, and the bottom, pond of getting the raw materials ready is provided with submerged type reamer kibbler fragmenting bulk solid matter; A methanogen breeding multiplication generation needs about 5 hours, and anaerobic digester system treatment capacity every day is divided into 5 chargings, sets 4-6 hour from the charging of ultrahigh-temperature acidification reactor once; When the high concentration organic mixed solution got into the ultrahigh-temperature acidification reactor, a certain proportion of natural pond fertile (bacterial classification) backflow (about 30% inlet amount) also got into simultaneously; Anaerobic digestion reaction vessel is provided with ultrahigh-temperature acidification reactor, ultrahigh-temperature transient response device, high temperature methane-producing reactor, is communicated with from the party wall bottom windows each other; High concentration organic mixed solution and backflow natural pond fertilizer get into compressing part Digestive system from the ultrahigh-temperature acidification reactor and get into the ultrahigh-temperature transient response device; Ultrahigh-temperature transient response device part Digestive system enters into the high temperature methane-producing reactor again, becomes natural pond fertilizer up to the high concentration organic mixed solution and from last high temperature methane-producing reactor, extracts out; Ultrahigh-temperature acidification reactor design temperature 65-68 degree, pH value 6-6.5; Ultrahigh-temperature transient response device design temperature 58-61 degree, pH value 6.5-7; High temperature methane-producing reactor design temperature 53-56 degree, pH value 6.8-7.5; Under high temperature, Digestive system PH normal value and anaerobic condition, the quick digest and decompose organism of mikrobe forms methane fertile with the natural pond; Biogas is collected the back from each reactor head mouth of pipe and is got into gas-holder, and natural pond fertilizer is extracted out from last high temperature methane-producing reactor and got into the fertile water extracter dehydration in natural pond; Each anaerobic digestion reaction vessel is provided with the device that blows floating; Regularly blow floating, make the solid matter that is deposited in reactor bottom floating, do not stop circulation in 24 hours with reactor drum autodigestion liquid again and blow floating with the reflux gas high pressure; Keep solid matter not sink to the bottom, help digest fully to contact with anerobes; The Digestive system recycle system is provided with filtering system and stops that the above solid matter of 0.6cm passes through, and avoids stopping up the pipeline that blows floating.Each anaerobic digestion reaction vessel is provided with heating device, heats to adopt HP steam directly to heat, and steam-pipe directly feeds in the strumbox of the Digestive system recycle system, and the Digestive system Rapid Cycle is disperseed localized hyperthermia; Each anaerobic digestion reaction vessel is provided with on-line temperature monitoring appearance, pH value monitor, content gauge, concentration monitor, redox potential monitor, grasps each reactor data and in time adjusts; Adjust each reactor drum Digestive system pH value for ease, each reactor drum is provided with the fertile reflux line inlet of basic soln and natural pond, in time adjusts Digestive system pH value in the reactor drum.
By-product utilization: natural pond fertilizer is extracted out from last high temperature methane-producing reactor and is got into the fertile water extracter dehydration in natural pond; Deviating from the natural pond liquid pump goes into sewage work's settling tank or adjusts digestion reactor pH value, concentration; Natural pond slag after the dehydration is added the bacterial classification compost treatment, and it is for sale that moisture content is reduced to 30% left and right sides granulation, pack, warehouse-in.Biogas is sent into the generating of marsh gas power generation unit through dehydration, desulfurization, storage, pressurization, sends power transmission network and sells; It is personal that biogas also is transported to the boiler house.
Claims (10)
1. a mud washing system contains the mud wash trough, and organic sludge settling tank and clarification hold well is characterized in that; Said mud wash trough, organic sludge settling tank and clarification hold well adopt buried design; Lowest part is domatic to the bottom surface from the mud entrance end in the bottom surface of mud wash trough; The bottom surface lowest part is provided with sludge pump and pipeline is communicated with the import of mud wash trough forward mud; Said organic sludge settling tank is in abutting connection with the mud wash trough; Its bottom surface is lower than the bottom surface lowest part of mud wash trough; The mud wash trough is provided with the washing sludge outlet with the shared partition wall upper end of organic sludge settling tank and is communicated with organic mudpan, and said clarification hold well is arranged on the end of the relative side of washing mud import in the organic sludge settling tank, and its well head height is lower than the washing mud import of organic sludge settling tank; Be provided with sump pump in the clarification hold well, said sump pump is communicated with the mud import of mud wash trough and the Sewage treatment systems or the Sewage Plant settling tank of back level through pipeline.
2. mud washing system according to claim 1 is characterized in that: the adjacent high concentration organic mud storage pool that is provided with said organic sludge settling tank; The said mud wash trough bottom surface gradient is 35～50 degree, and the washing sludge outlet place of the partition wall upper end that mud wash trough and organic sludge settling tank are shared is provided with grid, and the aperture of said grid is between 1～3cm; Said organic sludge settling tank is provided with the sludge pump pipeline and is communicated with sludge dewatering equipment, and said sludge dewatering equipment is provided with Sewage treatment systems or the Sewage Plant settling tank that sludge pipe and sewer line are communicated with high concentration organic mud storage pool and back grade respectively; The well head height of said clarification hold well is 2/3rds of the organic sludge settling tank degree of depth.
3. mud washing system according to claim 2; It is characterized in that: contain inorganic refuse, be difficult for decomposing the garbage dewatering pond; Mud wash trough bottom surface lowest part is provided with sludge pump and pipeline is communicated with inorganic refuse, is difficult for decomposing the garbage dewatering pond; Said inorganic refuse, be difficult for decomposing the garbage dewatering pond and be located on the face of land, is the gradient domatic between the 5-10 degree at the bottom of the pond, inorganic refuse, be difficult for decomposing pond, garbage dewatering pond at the bottom of a minimum side do not have enclosure wall; Lowest part pond basifacial is provided with sewage routeway connection mud wash trough at the bottom of the pond, the metal double-edged fine-toothed comb is installed above the sewage routeway stops that inorganic refuse passes through; The top of said mud wash trough, organic sludge settling tank, clarification hold well, high concentration organic mud storage pool is provided with sludge pump and pipelining hole, and pipeline and valve thereof are installed in the space outerpace of each pond body.
4. sludge organism treatment system that contains the said mud washing system of claim 1; It is characterized in that: contain the stalk pretreatment system, the system that gets the raw materials ready and anaerobic digester system; Said stalk pretreatment system contains HP steam jar and stalk reactor for hydrolysis and acidification; Feed proportioning system contains the pond of getting the raw materials ready, basic soln pond, and the high concentration organic mud storage pool of mud washing system is provided with the sludge pump pipeline and is communicated with the pond of getting the raw materials ready; The HP steam jar of said stalk pretreatment system is provided with the heating steam import and is communicated with steam boiler; And be provided with the basic soln import and be communicated with the basic soln pond; Stalk reactor for hydrolysis and acidification top is provided with slaking stalk opening for feed, sludge pump installing port and natural pond fertilizer, self-circulation conduit entrance; Said stalk reactor for hydrolysis and acidification bottom is provided with submerged type reamer kibbler; The natural pond is fertile, the self-circulation conduit entrance is communicated with the pond of getting the raw materials ready through self-circulating pump, pipeline and filtration unit, and the pond of getting the raw materials ready connects anaerobic digester system through the material conveying device.
5. sludge organism treatment system according to claim 4 is characterized in that: anaerobic digester system contains ultrahigh-temperature reactor for hydrolysis and acidification, ultrahigh-temperature transient response device, high temperature methane-producing reactor; Said ultrahigh-temperature reactor for hydrolysis and acidification, ultrahigh-temperature transient response device and high temperature methane-producing reactor are communicated with through the party wall bottom windows each other, and last high temperature methane-producing reactor is provided with the fertile sludge pump of extracting out in natural pond; Each reactor drum is provided with basic soln, the fertile reflux line inlet in natural pond, sludge pump installing port and pipeline and imports and exports; Each reactor drum is provided with on-line temperature monitoring appearance, pH value monitor, content gauge, concentration monitor, redox potential monitor, and lower peripheral wall is provided with thermal insulation layer on each reactor drum.
6. sludge organism treatment system according to claim 5; It is characterized in that: said ultrahigh-temperature reactor for hydrolysis and acidification, ultrahigh-temperature transient response device, high temperature methane-producing reactor inner bottom part are equipped with the device that blows floating, and the conduit entrance that blows floating of the said device that blows floating is introduced from each reactor head and connected autodigestion fluid circulation and reflux gas high-pressure system; Said stalk reactor for hydrolysis and acidification and high temperature methane-producing reactor respectively adopt 2-5 reactor drum to form.
7. a sludge organism treatment process adopts the described sludge organism treatment system of claim 4, and the method that adopts mud, stalk blend to handle is characterized in that:
At first, with putting into the pressure pan high temperature steaming behind the agricultural crop straw sprinkling basic soln of pulverizing grassization;
Then, the crop stalk of slaking is poured in the stalk pretreatment reaction device, added natural pond liquid, natural pond fertilizer or stalk acidizing fluid, make in the stalk pretreatment reaction device material dry solid content 10～12%;
The 3rd, seal stalk pretreatment reaction device, heating makes stalk pretreatment reaction device keep the Digestive system temperature at 65～68 degree, and open the reamer kibbler when heating and stir Digestive system with dispersion localized hyperthermia, and with the further refinement of stalk granularity; Crop stalk hydrolytic acidification time 4～12 days;
The 4th; Ratio according to weight part 1～1.5:1; With the high concentration organic mud of solids content 10～12% and the stalk solution suction of the half acidication pond of getting the raw materials ready, add basic soln respectively to the pond of getting the raw materials ready, make in the pond of getting the raw materials ready and after the pH of mixed value 6～6.5;
The 5th; Mixed solution is conveyed into anaerobic digester system, sneaks into natural pond fertilizer or bacterial classification simultaneously, carry out Anaerobic Digestion into inlet amount 25-35%.
8. sludge organism treatment process according to claim 7; It is characterized in that: methanogen breeding multiplication generation needs 5 hours; Anaerobic digester system treatment capacity every day is divided into 5 chargings, and the pond of getting the raw materials ready is set per 4～6 hours from the charging of ultrahigh-temperature acidification reactor once.
9. according to claim 7 or 8 said sludge organism treatment processs, it is characterized in that: anaerobic digester system contains ultrahigh-temperature reactor for hydrolysis and acidification, ultrahigh-temperature transient response device and several high temperature methane-producing reactors; Ultrahigh-temperature acidification reactor design temperature 65-68 degree, the pH value is 6-6.5; Ultrahigh-temperature transient response device design temperature 58-61 degree, pH value 6.5-7; High temperature methane-producing reactor design temperature 53-56 degree, pH value 6.8-7.5.
10. according to claim 7 or 8 said sludge organism treatment processs; It is characterized in that: through said mud washing system; Sewage work settling tank mud collected to pump in the mud wash trough wash; Not labile solid deposits is in the wash trough bottom in the mud; Light soluble organic matter flows into together in the organic sludge settling tank with sewage and precipitates, the mud that is deposited in wash trough bottom by sludge pump constantly behind the pond bottom extract out and pump into the anterior repetitive scrubbing of wash trough, the not labile solid refuse suction inorganic refuse of wash trough bottom accumulation, be difficult for decomposing the dehydration of garbage dewatering pond; Deviate from effluent stream and return wash trough, not labile solid refuse is transported outward landfill after dewatering; Mud in the organic sludge settling tank pumps into the sludge dewatering equipment dehydration through deposition.
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