CN103008322B - Kitchen waste treatment system - Google Patents

Kitchen waste treatment system Download PDF

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Publication number
CN103008322B
CN103008322B CN201210385907.5A CN201210385907A CN103008322B CN 103008322 B CN103008322 B CN 103008322B CN 201210385907 A CN201210385907 A CN 201210385907A CN 103008322 B CN103008322 B CN 103008322B
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China
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water
waste
treatment
tank
pump
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CN201210385907.5A
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Chinese (zh)
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CN103008322A (en
Inventor
张巍
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帕克环保技术(上海)有限公司
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Abstract

The invention discloses a kitchen waste treatment system and method. The problems that the kitchen waste treatment system does not adapt to the China's national conditions, a treatment effect is not ideal and the waste is easily caused in the prior art are solved. The kitchen waste treatment system respectively comprises a kitchen waste pretreatment system and a kitchen waste wastewater treatment system. Kitchen wastes are pretreated through the kitchen waste pretreatment system, the wastewater generated in the treatment process is recycled through treatment of the kitchen waste wastewater treatment system, the thought of treating the kitchen wastes based on an original solid anaerobic fermentation technology is broken, a liquid-phase high-rate anaerobic technology treatment process serves as a main process, water recycling is realized, and reclaimed water is recovered to the front-section pretreatment process. In the whole treatment process, when the treatment effect is improved, the investment cost is not increased, hazard-free treatment and resource treatment of solid, liquid and gas wastes are really realized.

Description

A kind of restaurant garbage treating system
Technical field
The present invention relates to a kind of refuse disposal system, particularly relate to a kind of restaurant garbage treating system.
Background technology
Along with urban economy, society and people's lives are fast-developing, changing food waste manifests day by day to the pollution of environment and the harm of public health security, and the harm of changing food waste has caused the great attention of people and government.Build changing food waste process engineering, be the needs of rapid urban, meet the sustainable development of changing food waste process, improve that changing food waste is innoxious, minimizing and resource level, and the transportation of changing food waste can be improved.
The major technique of current changing food waste process comprises landfill, burning, anaerobic fermentation, aerobic compost, directly dries and make feed and microbiological treatment technology.It is large to there is occupation of land in Landfill, the features such as percolate is many, environmental risk is large; Because calorific value is low, energy consumption is high, and produces the pernicious gases such as bioxin, limits the development of incineration technology; Fodder and Fertilizer Transformed also exist the risk that homology is polluted, and efficiency is also very low; And utilize anaerobic fermentation treatment technology process changing food waste to have more wide application abroad, particularly in Europe, obtain larger development with the method process organic waste of anaerobic fermentation, in Japan and Korea S, anaerobic fermentation process changing food waste have also been obtained larger development.The innoxious degree of this technology is higher, overcomes the impact of homology completely, and has high organic loading ability to take the burden.Current domestic traditional anaerobic fermentation technology smashes slurrying by after sorting kitchen waste, then CSTR fermentation tank is adopted to carry out anaerobic fermentation, but the dining and drinking culture of China's uniqueness creates the distinct changing food waste character with west, this large based on the Chinese changing food waste water content of residue after the meal, impurity is various.Solid anaerobic digestion is mixed badly causes acidifying serious, the problems such as the accumulative suppression of ammonia nitrogen.Meanwhile, because traditional solid anaerobic digestion tank is according to the original design of hydraulic detention time (the HRT=SRT bacterial classification time of staying), in any pretreatment section, the increase of water consumption all can cause CSTR anaerobic reactor volume undesirable extention.Significantly limit selection and the treatment effect of pretreating process.Make solid-fermented technique difficult in the practical application of Chinese meal kitchen garbage disposal.
Summary of the invention
The invention discloses a kind of restaurant garbage treating system, be not suitable with China's actual conditions in order to solve restaurant garbage treating system of the prior art, treatment effect is undesirable, easy wasting problem.
Above-mentioned purpose of the present invention is achieved through the following technical solutions:
A kind of restaurant garbage treating system, wherein, comprise a changing food waste pretreatment system, described changing food waste pretreatment system has many waste outflow pipe and many inlet channels, described many waste outflow pipe are connected with the water inlet of a kitchen garbage, waste-water treatment system, the delivery port of described kitchen garbage, waste-water treatment system is connected with many inlet channels of described restaurant garbage treating system, the sewage that described changing food waste pretreatment system is discharged recycles by again entering changing food waste pretreatment system after the process of described kitchen garbage, waste-water treatment system.
Restaurant garbage treating system as above, wherein, described changing food waste pretreatment system specifically comprises: a hopper, and the bottom of described hopper is provided with one first grizzly bar layer, one second grizzly bar layer from top to bottom successively, and the gap of described second grizzly bar layer is greater than the gap of described first grizzly bar layer; The bottom of described hopper is provided with a grit water separator, and the water side of described grit water separator is connected with the water inlet of a kitchen garbage, waste-water treatment system; Described hopper is provided with a material outlet, and a rotary drum sieve is arranged on the side-lower of described hopper, and one end of a material conveying passage is connected in described material outlet, and the other end of described material conveying passage is connected on described rotary drum sieve; One end of one moving belt is arranged on below the discharge end of described rotary drum sieve, and the other end of described moving belt is arranged on above the charging aperture of a pulverizing squeezer; The discharge end of described pulverizing squeezer is connected with a hydraulic flotation groove; The discharge end of described hydraulic flotation groove is connected with a pressafiner, and described pressafiner has a discharging opening.
Restaurant garbage treating system as above, wherein, described kitchen garbage, waste-water treatment system specifically comprises:
One waste water Buffer Pool, is provided with a three phase separation tank above the side of described waste water Buffer Pool, the water inlet pipe of an elevator pump stretches into described waste water Buffer Pool, and the outlet pipe of described elevator pump is connected with described three phase separation tank;
Described three phase separation tank has a water layer outlet, and described water layer outlet is provided with one and goes out water pump, described in go out water pump water side be connected with a regulating reservoir;
The water inlet end of one feed pump stretches into described regulating reservoir, and the water side of described regulating reservoir is connected with reactor warm in;
The water side of described middle temperature reactor is connected with a discharge bay, and one end of a feed pump is connected with described discharge bay, and the other end of described feed pump is connected with a reactor;
The outlet side of described reactor is connected with an aeration tank, is provided with a sedimentation basin below the water side of described aeration tank.
Restaurant garbage treating system as above and method, wherein, the water side of sedimentation basin is connected with one first reaction tank, sulfuric acid, hydrogen peroxide, ferrous sulfate is provided with in described first reaction tank, and being provided with agitator in described first reaction tank, the water side of described first reaction tank is connected with one second reaction tank, is provided with NaOH in described second reaction tank, the water side of described second reaction tank is connected with one the 4th reaction tank, has PAM in described 4th reaction tank; The water side of described 4th reaction tank is connected with an inclined plate settler, also comprise a continuous sand filter, described continuous sand filter is connected with described inclined plate settler by a supernatant elevator pump, the water side of described continuous sand filter is connected with a Treated sewage reusing pond, has a Treated sewage reusing water pump in described Treated sewage reusing pond.
Restaurant garbage treating system as above, wherein, the water inlet end of described rotary drum sieve is connected with the described Treated sewage reusing water pump of described kitchen garbage, waste-water treatment system, and the water side of described rotary drum sieve is connected with described kitchen garbage, waste-water treatment system waste water Buffer Pool; The water inlet end of described pulverizing squeezer is connected with the described Treated sewage reusing water pump of described kitchen garbage, waste-water treatment system, and the water side of described pulverizing squeezer is connected with the described waste water Buffer Pool of described kitchen garbage, waste-water treatment system.
Restaurant garbage treating system as above, wherein, the grizzly bar of described first grizzly bar layer and described second grizzly bar layer all communicates with steam input pipe road; Described grit water separator has a vapor inlet port.
Restaurant garbage treating system as above, wherein, described three phase separation tank has an oil trap, also comprises a grease processing unit, is provided with a grease pump between described oil trap and described grease processing unit.
Restaurant garbage treating system as above, wherein, has a grug feeding jar, an agitator, is provided with NaOH medicament in described grug feeding jar, also have a pH value on-line detector and a liquid level gauge in described regulating reservoir in described regulating reservoir.
Restaurant garbage treating system as above, wherein, the top of described middle temperature reactor is provided with a biogas outlet, and a biogas storage tank is connected with described biogas outlet, is provided with a cold pouring tank below described biogas storage tank.
Restaurant garbage treating system as above, wherein, described middle temperature reactor top is provided with a flotation tank, also comprises a sludge dewatering system, is connected between described flotation tank with described sludge treating system by a sludge pump.
In sum, owing to have employed technique scheme, restaurant garbage treating system of the present invention solves restaurant garbage treating system in prior art and is not suitable with China's actual conditions, treatment effect is undesirable, easy wasting problem, changing food waste pretreatment system and kitchen garbage, waste-water treatment system are set respectively, by changing food waste pretreatment system, pretreatment is carried out to changing food waste, and by the waste water produced in processing procedure by again recycling after the process of kitchen garbage, waste-water treatment system, breach the thinking of original solid anaerobic fermentation technical finesse changing food waste, liquid phase efficient anaerobic technological processing craft is adopted to be main process, water circulation use in realization, Treated sewage reusing is to leading portion preprocessing process.Whole handling process, while raising treatment effect, does not increase investment cost, really achieves the innoxious and resource of " solid, liquid, gas " three wastes.
Accompanying drawing explanation
Fig. 1 is the structural representation of the changing food waste pretreatment system of restaurant garbage treating system of the present invention and method;
Fig. 2 is the structural representation of the Part I of the kitchen garbage, waste-water treatment system of restaurant garbage treating system of the present invention and method;
Fig. 3 is the structural representation of the Part II of the kitchen garbage, waste-water treatment system of restaurant garbage treating system of the present invention and method;
Fig. 4 is the structural representation of the Part III of the kitchen garbage, waste-water treatment system of restaurant garbage treating system of the present invention and method.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described:
A kind of restaurant garbage treating system, wherein, comprise a changing food waste pretreatment system, described changing food waste pretreatment system has many waste outflow pipe and many inlet channels, described many waste outflow pipe are connected with the water inlet of a kitchen garbage, waste-water treatment system, the delivery port of described kitchen garbage, waste-water treatment system is connected with many inlet channels of described restaurant garbage treating system, the sewage that described changing food waste pretreatment system is discharged recycles by again entering changing food waste pretreatment system after the process of described kitchen garbage, waste-water treatment system.
Fig. 1 is the structural representation of the changing food waste pretreatment system of restaurant garbage treating system of the present invention, refers to Fig. 1,
Fig. 1 is the structural representation of changing food waste pretreatment system of the present invention, refers to Fig. 1, and a kind of changing food waste pretreatment system, wherein, comprising:
One hopper 1, the bottom of described hopper 1 is provided with one first grizzly bar layer 47,1 second grizzly bar layer 48 from top to bottom successively, the gap of described second grizzly bar layer 48 is greater than the gap of described first grizzly bar layer 47, arrange two-layer grizzly bar layer to make it possible to changing food waste to separate by size, be convenient to follow-up cleaning work;
The bottom of described hopper 1 is provided with a grit water separator 3, the water side of described grit water separator 3 is connected with the water inlet of a kitchen garbage, waste-water treatment system, grit water separator 3 can by rubbish larger for proportion, as gravel, broken bone, fabric etc. are separated, the rubbish that proportion is lighter and supernatant are from flowing into follow-up kitchen garbage, waste-water treatment system;
Described hopper 1 is provided with a material outlet, one rotary drum sieve 4 is arranged on the side-lower of described hopper 1, one end of one material conveying passage 2 is connected in described material outlet, the other end of described material conveying passage 2 is connected on described rotary drum sieve 4, wherein, by magnetic force on material conveying passage 2, artificial separation band 5 by artificial by the difficult for biological degradation in rubbish, hard bulk inorganic refuse, reach the technique effect of the pulverizer destruction of avoiding may causing in subsequent technique, wherein, rotary drum sieve 4 is a kind of horizontally-mounted waterpower rinsing devices, automatically can isolate by rinsed residue at end simultaneously,
One end of one moving belt is arranged on below the discharge end of described rotary drum sieve 4, and the other end of described moving belt is arranged on above the charging aperture of a pulverizing squeezer 6;
The discharge end of described pulverizing squeezer 6 is connected with a hydraulic flotation groove;
The discharge end of described hydraulic flotation groove is connected with a pressafiner, and described pressafiner has a discharging opening.
The gap of described first grizzly bar layer 47 of the present invention can be 8mm, and the width of described first grizzly bar layer 47 can be 30mm.
The gap of described second grizzly bar layer 48 of the present invention can be 60mm, and the width of described second grizzly bar layer 48 can be 30mm.
Further, the first grizzly bar layer 47 of the present invention and the second grizzly bar layer 48 also can adopt other size, and protection scope of the present invention is not restricted to above-mentioned size.
The grizzly bar of described first grizzly bar layer 47 of the present invention and described second grizzly bar layer 48 all communicates with steam input pipe road, and wherein, in grizzly bar, logical steam can, by animal fat melting, prevent from covering blocking.Free water and slurry.
The method passing into steam in grizzly bar has multiple, all should belong in protection scope of the present invention, not repeat them here.
Described grit water separator 3 of the present invention has a vapor inlet port, and wherein, in grit water separator 3, logical steam can, by animal fat melting, prevent from covering blocking.
Described material conveying passage 2 of the present invention is specifically as follows two differential spiral compositions, also can transmit by other means.
The water inlet end of described rotary drum sieve of the present invention is connected with the delivery port of described kitchen garbage, waste-water treatment system, and the water side of described rotary drum sieve is connected with the water inlet of described kitchen garbage, waste-water treatment system, realizes the technique effect of waste water reuse.
The water inlet end of described pulverizing squeezer 6 of the present invention is connected with the delivery port of described kitchen garbage, waste-water treatment system, the water side of described pulverizing squeezer 6 is connected with the water inlet of described kitchen garbage, waste-water treatment system, similar with scheme above, realize the technique effect of waste water reuse equally.
The discharging opening of described pressafiner of the present invention communicates with the charging aperture of a drying plant, changing food waste process of the present invention finally can carry out follow-up drying and processing to manufacture the forage protein of high added value, further, also directly the byproducts such as granular fuel can be done.
Have a material above described hopper 1 of the present invention and send into conveyer belt, the material of described material feeding conveyer belt is put into end and is had an on-ground weigher.
In one embodiment of the invention, specific works mode of the present invention is as follows:
Changing food waste is after receiving fortune vehicle transport and arriving disposal field, after weighing in ground, pour in receiving hopper 1, in the bottom (especially locating bottom spiral) of whole receiving hopper by gap 60mm and gap 8mm, the double-deck grizzly bar composition of wide 30mm, in grizzly bar, logical steam can, by animal fat melting, prevent from covering blocking.Free water and slurry, and the suspension of below 8mm particle diameter will fall into the grit water separator 3 of its underpart between grizzly bar, through this process, estimates that the scale of construction of changing food waste will reduce half.
The swill liquid falling into grit water separator 3 continues rubbish larger for proportion, and as gravel, broken bone, fabric etc. are separated, the rubbish that proportion is lighter and supernatant are from flowing into follow-up kitchen garbage, waste-water treatment system.In grit water separator 3, logical steam can, by animal fat melting, prevent from covering blocking.
The isolated larger rubbish of hopper 1 slowly and is equably transported to rotary drum sieve 4 by the material conveying passage 2 that two differential spirals form, and completes broken bag process in this course simultaneously.
Rotary drum sieve 4 is a kind of horizontally-mounted waterpower rinsing devices, automatically can isolate by rinsed residue at end simultaneously.
The rubbish that helical feed is come falls in rotary drum sieve 4 continuously, relies on the rotation of rotary drum sieve 4 that rubbish is stirred in rinsing liquid, reaches the object of washing.Through washing, the smell of residue improves greatly, and organic matter is also split into wastewater treatment.
Residue after washing passes through magnetic force, artificial separation band 5 by artificial by the difficult for biological degradation in rubbish, hard bulk inorganic refuse, back segment pulverizer may be caused to destroy, and such as glass, porcelain watt, nonferrous metal (ironware entering the sorting of the magnetic force before manual sorting's platform remove) sorting are removed.
After artificial separation, rubbish relies on gravity to fall into pulverizing squeezer 6 and pulverizes, and enters hydraulic flotation groove, use recycle-water to rinse after pulverizing, can bring the organic matter of outflow after overstocking, cut, pulverizing into wastewater treatment.
Rubbish residue after pulverizing is sent into pressafiner and solid content is risen to more than 50% from 10%, then grind further below 3mm particle diameter or thinner, send into follow-up drying and processing to manufacture the forage protein of high added value or directly to do the byproducts such as granular fuel.
The thickness organic matter cleaning of more hogwash surface, by pre-washing, not only by the stench peculiar smell that removal changing food waste produces, but also goes to produce natural pond by a kind of changing food waste pretreatment system in the present invention.The washing of pulverizing squeezer can improve the treatment effect pulverizing cutter head, after pulverizing, further the thickness organic matter flowed out after pulverizing cleaning not only goes to produce natural pond by washing, and the lubrication between destruction crushed material, be conducive to press dewatering effect, obtain higher mass dryness fraction and cleaner solid waste, thus reach extremely effective and outstanding garbage disposal result.
On the basis of changing food waste pretreatment system of the present invention, the present invention also has a kitchen garbage, waste-water treatment system, waste water in order to produce changing food waste pretreatment system processes, and be re-applied in changing food waste pretreatment system, the described kitchen garbage, waste-water treatment system in the present invention specifically comprises:
Fig. 2 is the structural representation of the Part I of the kitchen garbage, waste-water treatment system of restaurant garbage treating system of the present invention, refers to Fig. 2, and a kind of kitchen garbage, waste-water treatment system, wherein, comprising:
One waste water Buffer Pool 7, a three phase separation tank 12 is provided with above the side of described waste water Buffer Pool 7, the water inlet pipe of one elevator pump 9 stretches into described waste water Buffer Pool 7, and the outlet pipe of described elevator pump 9 is connected with described three phase separation tank 12, arranges three phase separation tank 12 and goes out grease and dirt in order to sub-argument;
Described three phase separation tank 12 has a water layer outlet, and described water layer outlet is provided with one and goes out water pump, described in go out water pump water side be connected with a regulating reservoir 16;
The water inlet end of one feed pump 19 stretches into described regulating reservoir 16, and the water side of described regulating reservoir 16 is connected with reactor 20 warm in, and in middle temperature reactor 20, a large amount of organic matters is removed, and is converted into biogas;
Fig. 3 is the structural representation of the Part II of restaurant garbage treating system of the present invention, refer to Fig. 3, the water side of described middle temperature reactor 20 is connected with a discharge bay 22, one end of one feed pump 19 is connected with described discharge bay 22, and the other end of described feed pump 19 is connected with a reactor 24;
The outlet side of described reactor 24 is connected with an aeration tank 28, is provided with a sedimentation basin 30 below the water side of described aeration tank 28, and arranging aeration tank 28 can further degradation of organic substances.
Be provided with a steam jet ejector 8 in described waste water flushing pond of the present invention, pass into steam and heat, and prevent grease from covering blocking.
Two-stage vortex plate type heat exchanger is provided with between described waste water Buffer Pool 7 of the present invention and described three phase separation tank 12, in order to heat waste water, temperature in three phase separation tank 12 is remained in a higher temperature, temperature can be remained on 70 degree, to reach good separating effect.
Described three phase separation tank 12 of the present invention has an oil trap, also comprises a grease processing unit, is provided with a grease pump 14 between described oil trap and described grease processing unit.
An one-level vortex plate type heat exchanger 15 is provided with, to reduce wastewater temperature between described regulating reservoir 16 of the present invention and described three phase separation tank 12.
There is in described regulating reservoir 16 of the present invention grug feeding jar 18, agitator 17, be provided with NaOH medicament in described grug feeding jar 18, also there is in described regulating reservoir 16 a pH value on-line detector and a liquid level gauge.
The top of described middle temperature reactor 20 of the present invention is provided with a biogas outlet, one biogas storage tank 48 is connected with described biogas outlet, a drainer 47 is provided with below described biogas storage tank 48, biogas drains into biogas storage tank 48 from reactor head, and the condensed water in biogas is collected by drainer 47.
Described middle temperature reactor 20 top of the present invention is provided with a flotation tank, also comprise a sludge dewatering system, be connected by a sludge pump 21 between described flotation tank with described sludge treating system, separated in the flotation tank that the SS of other bio-degradables in waste water and grease are settled in reactor top, be back in BIOPAQ reactor together with a body refuse part of collecting in air supporting, excess sludge is squeezed into sludge dewatering system by sludge pump 21 and is carried out processed.The water outlet of BIOPAQ reactor is from flowing into BIOPAQ discharge bay 22.
Activated sludge taste scrubbing tower is provided with in described aeration tank of the present invention.
The water side of sedimentation basin 30 of the present invention is connected with one first reaction tank 31, sulfuric acid, hydrogen peroxide, ferrous sulfate is provided with in described first reaction tank 31, and be provided with agitator 17 in described first reaction tank 31, the water side of described first reaction tank 31 is connected with one second reaction tank 31, NaOH is provided with in described second reaction tank 31, the water side of described second reaction tank 31 is connected with one the 4th reaction tank 31, has PAM in described 4th reaction tank 31; The water side of described 4th reaction tank 31 is connected with an inclined plate settler 36, also comprise a continuous sand filter 38, described continuous sand filter 38 is connected with described inclined plate settler 36 by a supernatant elevator pump 9, the water side of described continuous sand filter 38 is connected with a Treated sewage reusing pond 39, there is in described Treated sewage reusing pond 39 a Treated sewage reusing water pump 40, wherein, described first reaction tank 31, second reaction tank 31, the 3rd reaction tank 31, the 4th reaction tank 31 can be four sub-reaction tanks of one reaction pool 31.
The structural representation that the structural representation that Fig. 2 is the Part I of restaurant garbage treating system of the present invention, Fig. 3 are the Part II of restaurant garbage treating system of the present invention, Fig. 4 are the structural representations of the Part III of restaurant garbage treating system of the present invention, refer to Fig. 2, Fig. 3, Fig. 4, in one embodiment of the invention, specific works mode of the present invention is as follows:
Waste water Buffer Pool 7 collects all pressing filtrates in front end and flushing water, waste water inside mixes, homogeneous, simultaneously in pond, waste water passes into steam by steam jet ejector 8 and heats, blocking is covered to prevent grease, waste water is promoted to follow-up three phase separation tank 12 by elevator pump 9, two-stage vortex plate type heat exchanger 10 is used in three phase separation tank 12 front end, 11 carry out waste water heating, the wastewater temperature in three phase separation tank 12 is made to remain on 70 DEG C, grease processing unit is delivered to through grease pump 14 after isolated grease is automatically collected oil trap, mud then gravity current enters in raw material refuse hopper.Above, oil reservoir and the water layer below between slag blanket are gone out water pump 13 and are squeezed into regulating reservoir 16, before regulating reservoir 16, use one-level vortex plate type heat exchanger 15 that wastewater temperature is down to 38 DEG C, add NaOH medicament by NaOH grug feeding jar 18 and regulate pH value of waste water, fully mix by agitator 17, dissolve, and prevent the sedimentation of solidity thing, be furnished with pH value on-line computing model and liquid level gauge in pond with the pH value of waste water in continuous monitoring pool and liquid level.Waste water is promoted to warm reactor 20 in BIOPAQ by BIOPAQ feed pump 19, in BIOPAQ, in warm reactor 20, a large amount of organic matters is removed, be converted into biogas, biogas therefrom warm reactor 20 top drains into biogas storage tank 48, cold trickle in biogas is collected by drainer 47, biogas directly can be burnt by biogas burner 49, or for generating after being processed by THIOPAQ biogas desulfurization system.The SS of other bio-degradables in waste water and grease are then separated in the flotation tank of middle temperature reactor 20 top arrangement, be back in BIOPAQ reactor together with a body refuse part of collecting in air supporting, excess sludge is squeezed into sludge dewatering system by sludge pump 21 and is carried out processed.The water outlet of BIOPAQ reactor, from flowing into BIOPAQ discharge bay 22, is then pumped to aerobic unit by PHOSPAQ charging pump 23.
Waste water removes biodegradable organic pollution further through the process of aerobic activated sludge system again after Anaerobic Treatment.Because in anaerobic effluent, P content is higher, for effectively removing phosphorus and reducing the situation occurring guanite in follow-up system, anaerobic effluent pumps into PHOSPAQ reactor 24 by PHOSPAQ charging pump 23.By NaOH grug feeding jar 18 and Mg salt grug feeding jar 26 respectively to adding NaOH and Mg salt in reactor, arrange air blast 27 and provide oxygen, under aerobic condition, struvite crystals can be formed and be deposited in reactor bottom in reactor.Guanite precipitation and the active excess sludge produced are delivered in mud blending tank 41 by PHOSPAQ sludge pump 25.COD and BOD in water also effectively can degrade under aerobic condition.
Wherein, in above-mentioned technique, in the BIOPAQ that efficient anaerobic technology adopts, warm reactor designs according to volumetric loading VLR, instead of the CSTR of low usefulness is according to the original design of hydraulic detention time (the HRT=SRT bacterial classification time of staying), so in conjunction with technology of middle water recycle, core concept of the present invention does not limit even to encourage solid waste (hogwash) sorting and processing procedure to adopt water in circulation in a large number.Evade the risk of traditional CSTR full-mixing type reactor volume undesirable extention simultaneously.
PHOSPAQ reactor 24 water outlet is from flowing to the further degradable organic pollutant of consequent activities sludge aeration tank 28.And in this aeration tank, be provided with odor treating device Bio-Scrubber activated sludge stink scrubbing tower 29 to process the waste gas of whole technological process.Waste gas passes into Bio-Scrubber activated sludge stink scrubbing tower 29 from bottom, by sludge pump 31, partial reflux activated sludge is squeezed into scrubbing tower, fully contact with waste gas at the packing layer of scrubbing tower, by microbial decomposition, absorb the gas that Sum decomposition produces stink in a large number.Aeration tank 28 water outlet enters sedimentation basin 30 and precipitates, and sedimentation basin 30 water outlet requires to continue to enter follow-up advanced treatment system according to water outlet.
Sedimentation basin 30 water outlet gravity flow enters follow-up Fenton reaction tank 31, sulfuric acid, hydrogen peroxide, ferrous sulfate is added respectively in first reaction tank by sulfuric acid grug feeding jar 32, hydrogen peroxide grug feeding jar 33 and ferrous sulfate grug feeding jar 34, fully mixed by agitator, there is chemical oxidation reaction, remove the organic pollution of some difficult for biological degradation in waste water.In second reaction tank, add NaOH by NaOH grug feeding jar 18 and regulate pH value of waste water, in the 4th reaction tank, add PAM by PAM grug feeding jar 35, the tiny flco that oxidation reaction is formed is condensed into larger flco.Water outlet gravity flow enters tilted plate separator 36 and carries out Separation of Solid and Liquid.Supernatant enters continuous sand filter 38 by elevator pump 37 lifting and carries out subsequent treatment, and mud is from flowing into mud blending tank 41.Waste water can reach Treated sewage reusing standard after carrying out filtration treatment by final continuous sand filter 38, and water outlet, from flowing into Treated sewage reusing pond 39, is supplied water to the flushing of front end pre-processing device and spray by Treated sewage reusing water pump 40.
This technological process is provided with sludge treating system, mud blending tank 41 have collected BIOPAQ anaerobic sludge, FENTON mud and guanite mud, fully mixed by agitator 42, mud is squeezed into folded spiral shell dewaterer 44 by sludge lifting pump 43 and is dewatered, and adds by grug feeding jar 35 dewatering that PAM improves mud in mud.Filtrate in dehydration is from flowing into reservoir 45.The sewage disposal system being squeezed into front end by filtrate pump 46 processes.
Innoxious and the resource of this technological process really achieves " solid, liquid, gas " three wastes.Considerable economic benefit can be obtained while not increasing cost of investment.
Below enumerate the technique effect that a present invention is acquired in actual applications:
To process 25 tons of/day changing food waste projects, 25 tons of/day changing food wastes are after the pretreatment of front end, and the waste water total amount that every day produces is 64m3, and wherein receiving hopper isolates free water 8.5m3; Rotary drum sieve flushing water 30.25m3; Screw press 25.6m3.Subsequent design is about the sewage disposal system of 64m3/d disposal ability, waste water can reach three grades of discharge standards through biochemical treatment system water outlet, advanced treating water outlet can reach municipal wastewater process one-level emission standard A, water outlet can reuse to the flushing of front end pre-processing device, spray.
Relative subject device parameter list: device name number of devices size/disposal ability receiving hopper 22x2x1m helical feed 23m3/h grit water separator 110m3/d rotary drum sieves 1 Φ 1.5m magnetic force, artificial separation device 112m3/d pulverizes warm reactor 1 Φ 8.54x11.3mPHOSPAQ reactor 1 Φ 2.1x8m sedimentation basin Φ 1.5x4mBio-Scrubber zinc cation tower 1 Φ 3.5x22.5mFenton reaction tank 13.4x1.3x3m tilted plate separator 13.07x1.2x3.8m continuous sand filter 1 Φ 0.958x4.31m in squeezer 112m3/d Buffer Pool 170m3 vortex plate type heat exchanger 370m3/d three phase separation tank 1 Φ 4.5x6m regulating reservoir 13m3BIOPAQ and folds spiral shell dewaterer 15 ~ 8m3/h biogas air bag 110m3 condensation water tank 1 Φ 0.6x1.0m biogas burner 1150m3/h
Whole anaerobic ferment devices is estimated to produce biogas 2156m3/d, and after THIOPAQ biological desulphurization, H2S concentration can be purified to below 50ppm;
Changing food waste is apt to deteriorate, produces stench, must collect in time, ventilate energetically.Waste gas, after the washing of Bio-Scrubber activated sludge, can realize the secondary standard of factory's circle emission limit of the regulation of " People's Republic of China's emission standard for odor pollutants " (GB14554-93).
This project makes changing food waste reach recycling treatment by High-efficient Anaerobic Technology, reaches the object of Resource recovery, economize energy.Whole treatment process has fully demonstrated the principle of recycling economy, achieves the material recycle between each technique unit and energy circulation.By calculating the calorific value of biogas, the thermal balance of on-site can be realized.
This project operation cost: 930 yuan/day, amounting to processing cost is 37.2 yuan/ton of rubbish.
This project mainly runs that income is biogas, bio-oil, natural pond slag do bio-fertilizer additive.
According to operating experience and the domestic great many of experiments of international pro-ject, produce 0.35m3 methane according to 1kgCOD and calculate, can produce 1200m3 methane, amounting to biogas output is 2156m3/d, calculates, can produce the income of 4312 yuan every day according to 2 yuan/m3.
Wherein, bio-oil content 1% in normal changing food waste, therefore has 0.25 ton high oil content grease to be recycled, and bio-oil, by 4000 yuan/ton of calculating, can produce income 1000 yuan every day.
In fermentation tank, natural pond slag is as the additive of fertilizer, also can produce good income, specifically can adjust according to local circumstance.
Raw 64 tons of/day waste water of project common property, heat temperature raising is theoretical demand heat 5400MJ/d from 50 DEG C to 70 DEG C.And anaerobic methane production gas estimates that methane production is about 1200m3/d.Theoretical heat is 43000MJ/d.Remainder value is 37600MJ/d.
In sum, owing to have employed technique scheme, restaurant garbage treating system of the present invention solves restaurant garbage treating system in prior art and is not suitable with China's actual conditions, treatment effect is undesirable, easy wasting problem, changing food waste pretreatment system and kitchen garbage, waste-water treatment system are set respectively, by changing food waste pretreatment system, pretreatment is carried out to changing food waste, and by the waste water produced in processing procedure by again recycling after the process of kitchen garbage, waste-water treatment system, breach the thinking of original solid anaerobic fermentation technical finesse changing food waste, liquid phase efficient anaerobic technological processing craft is adopted to be main process, water circulation use in realization, Treated sewage reusing is to leading portion preprocessing process.Whole handling process, while raising treatment effect, does not increase investment cost, really achieves the innoxious and resource of " solid, liquid, gas " three wastes.
It should be appreciated by those skilled in the art that those skilled in the art can realize described change case in conjunction with prior art and above-described embodiment, do not repeat them here.Such change case does not affect flesh and blood of the present invention, does not repeat them here.
Above preferred embodiment of the present invention is described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, the equipment wherein do not described in detail to the greatest extent and structure are construed as to be implemented with the common mode in this area; Any those of ordinary skill in the art, do not departing under technical solution of the present invention ambit, the Method and Technology content of above-mentioned announcement all can be utilized to make many possible variations and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations, this does not affect flesh and blood of the present invention.Therefore, every content not departing from technical solution of the present invention, according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.

Claims (7)

1. a restaurant garbage treating system, it is characterized in that, comprise a changing food waste pretreatment system, described changing food waste pretreatment system has many waste outflow pipe and many inlet channels, described many waste outflow pipe are connected with the water inlet of a kitchen garbage, waste-water treatment system, the delivery port of described kitchen garbage, waste-water treatment system is connected with many inlet channels of described restaurant garbage treating system, the sewage that described changing food waste pretreatment system is discharged recycles by again entering changing food waste pretreatment system after the process of described kitchen garbage, waste-water treatment system,
Described changing food waste pretreatment system specifically comprises: a hopper, the bottom of described hopper is provided with one first grizzly bar layer, one second grizzly bar layer from top to bottom successively, the gap of described second grizzly bar layer is greater than the gap of described first grizzly bar layer, and the grizzly bar of described first grizzly bar layer and described second grizzly bar layer all communicates with steam input pipe road; The bottom of described hopper is provided with a grit water separator, and described grit water separator has a vapor inlet port; The water side of described grit water separator is connected with the water inlet of a kitchen garbage, waste-water treatment system; Described hopper is provided with a material outlet, and a rotary drum sieve is arranged on the side-lower of described hopper, and one end of a material conveying passage is connected in described material outlet, and the other end of described material conveying passage is connected on described rotary drum sieve; One end of one moving belt is arranged on below the discharge end of described rotary drum sieve, and the other end of described moving belt is arranged on above the charging aperture of a pulverizing squeezer; The discharge end of described pulverizing squeezer is connected with a hydraulic flotation groove; The discharge end of described hydraulic flotation groove is connected with a pressafiner, and described pressafiner has a discharging opening,
Described kitchen garbage, waste-water treatment system specifically comprises:
One waste water Buffer Pool, is provided with a three phase separation tank above the side of described waste water Buffer Pool, the water inlet pipe of an elevator pump stretches into described waste water Buffer Pool, and the outlet pipe of described elevator pump is connected with described three phase separation tank;
Described three phase separation tank has a water layer outlet, and described water layer outlet is provided with one and goes out water pump, described in go out water pump water side be connected with a regulating reservoir;
The water inlet end of one feed pump stretches into described regulating reservoir, and the water side of described regulating reservoir is connected with reactor warm in;
The water side of described middle temperature reactor is connected with a discharge bay, and one end of a feed pump is connected with described discharge bay, and the other end of described feed pump is connected with a reactor;
The outlet side of described reactor is connected with an aeration tank, is provided with a sedimentation basin below the water side of described aeration tank.
2. restaurant garbage treating system according to claim 1, it is characterized in that, the water side of sedimentation basin is connected with one first reaction tank, sulfuric acid, hydrogen peroxide, ferrous sulfate is provided with in described first reaction tank, and being provided with agitator in described first reaction tank, the water side of described first reaction tank is connected with one second reaction tank, is provided with NaOH in described second reaction tank, the water side of described second reaction tank is connected with one the 4th reaction tank, has PAM in described 4th reaction tank; The water side of described 4th reaction tank is connected with an inclined plate settler, also comprise a continuous sand filter, described continuous sand filter is connected with described inclined plate settler by a supernatant elevator pump, the water side of described continuous sand filter is connected with a Treated sewage reusing pond, has a Treated sewage reusing water pump in described Treated sewage reusing pond.
3. restaurant garbage treating system according to claim 1, it is characterized in that, the water inlet end of described rotary drum sieve is connected with the Treated sewage reusing water pump of described kitchen garbage, waste-water treatment system, and the water side of described rotary drum sieve is connected with described kitchen garbage, waste-water treatment system waste water Buffer Pool; The water inlet end of described pulverizing squeezer is connected with the described Treated sewage reusing water pump of described kitchen garbage, waste-water treatment system, and the water side of described pulverizing squeezer is connected with the described waste water Buffer Pool of described kitchen garbage, waste-water treatment system.
4. restaurant garbage treating system according to claim 1, is characterized in that, described three phase separation tank has an oil trap, also comprises a grease processing unit, is provided with a grease pump between described oil trap and described grease processing unit.
5. restaurant garbage treating system according to claim 1, is characterized in that, has a grug feeding jar, an agitator, be provided with NaOH medicament in described grug feeding jar in described regulating reservoir, also has a pH value on-line detector and a liquid level gauge in described regulating reservoir.
6. restaurant garbage treating system according to claim 1, is characterized in that, the top of described middle temperature reactor is provided with a biogas outlet, and a biogas storage tank is connected with described biogas outlet, is provided with a cold pouring tank below described biogas storage tank.
7. restaurant garbage treating system according to claim 1, is characterized in that, described middle temperature reactor top is provided with a flotation tank, also comprises a sludge dewatering system, is connected between described flotation tank with described sludge treating system by a sludge pump.
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