CN105834199A - Device and method for earthworms to digest kitchen waste - Google Patents
Device and method for earthworms to digest kitchen waste Download PDFInfo
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- CN105834199A CN105834199A CN201610334866.5A CN201610334866A CN105834199A CN 105834199 A CN105834199 A CN 105834199A CN 201610334866 A CN201610334866 A CN 201610334866A CN 105834199 A CN105834199 A CN 105834199A
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- lumbricus
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- changing food
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- 238000000034 method Methods 0.000 title claims abstract description 41
- 239000010806 kitchen waste Substances 0.000 title abstract 5
- 241001233061 earthworms Species 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 241000361919 Metaphire sieboldi Species 0.000 claims abstract description 45
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 32
- 239000010865 sewage Substances 0.000 claims abstract description 31
- 230000029087 digestion Effects 0.000 claims abstract description 27
- 239000010802 sludge Substances 0.000 claims abstract description 25
- 241000243684 Lumbricus Species 0.000 claims description 107
- 239000010794 food waste Substances 0.000 claims description 73
- 239000010841 municipal wastewater Substances 0.000 claims description 16
- 238000004064 recycling Methods 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 3
- 235000015097 nutrients Nutrition 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 2
- 235000013877 carbamide Nutrition 0.000 claims description 2
- 239000003337 fertilizer Substances 0.000 claims description 2
- 244000005700 microbiome Species 0.000 claims description 2
- 239000002686 phosphate fertilizer Substances 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 16
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 7
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000010813 municipal solid waste Substances 0.000 description 7
- 229910052698 phosphorus Inorganic materials 0.000 description 7
- 239000011574 phosphorus Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000003203 everyday effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000012552 review Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000004382 Amylase Substances 0.000 description 1
- 102000013142 Amylases Human genes 0.000 description 1
- 108010065511 Amylases Proteins 0.000 description 1
- 108010059892 Cellulase Proteins 0.000 description 1
- 102000012286 Chitinases Human genes 0.000 description 1
- 108010022172 Chitinases Proteins 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 102000004882 Lipase Human genes 0.000 description 1
- 108090001060 Lipase Proteins 0.000 description 1
- 239000004367 Lipase Substances 0.000 description 1
- 102000035195 Peptidases Human genes 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 235000019418 amylase Nutrition 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 229940106157 cellulase Drugs 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000002361 compost Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229940088598 enzyme Drugs 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002550 fecal effect Effects 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 210000004317 gizzard Anatomy 0.000 description 1
- 230000000968 intestinal effect Effects 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 235000019421 lipase Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 230000000242 pagocytic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 235000019833 protease Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009265 vermicomposting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a device and a method for earthworms to digest kitchen waste and belongs to the technical field of sewage disposal. The device comprises an earthworm digestion system and a biochemical system, wherein the earthworm digestion system is arranged at the front part of the biochemical system, and the bottom of the earthworm digestion system communicates with the side face of the biochemical system by a pipeline; the earthworm digestion system internally includes a kitchen waste feeding hole, a water distribution system, an earthworm digestion region, a sludge discharge region and a sludge discharge pump in sequence from top to bottom; the water distribution system is arranged in the earthworm digestion system in a spiral form by a water feeding pipeline; a gap is reserved right below the kitchen waste feeding hole; a faucet is arranged on the water feeding pipeline of the water distribution system; a water flow controller is arranged on the water distribution system; the water flow controller is connected with the water feeding pipeline; and a filtering screen is paved at the bottom of the earthworm digestion region. The device and the method can overcome the problems of non-ideal denitrification effect and insufficient effective carbon source of municipal sewage treatment plants, and can sufficiently utilize kitchen waste resources, thus being good in environmental and economical benefits and being high in resource utilization rate.
Description
Technical field
The present invention relates to technical field of sewage, more particularly, it relates to a kind of Lumbricus clears up the device and method of changing food waste.
Background technology
Along with the raising of environmental protection requirement, China's urban wastewater treatment is more and more tighter to the requirement of water outlet nitrogen, phosphorus concentration.Biological
Denitrogenation is the denitrogenation form being widely used at present, but it is restricted by various factors, particularly quite a few cities and towns city of China
There is the problem that carbon source is not enough in political affairs Sewage Plant, seriously constrains nitric efficiency so that water outlet total nitrogen tends not to stably reaching standard, this
Become the problem that many sewage treatment plants are in the urgent need to address.In biological denitrification process, carbon source is important influence factor,
Under normal circumstances, BOD is worked as5During/TKN ＜ 3, denitrification effect is poor, needs additional carbon to can be only achieved preferable denitrification effect.
Conventional method is to add external carbon source, such as methanol, acetic acid etc., improves the effect of biological denitrificaion, uses and add chemical agent,
Such as ferrous sulfate, aluminium polychlorid etc., improve the effect of dephosphorization, but although the method has certain effect, but it
Costly, simultaneously because the utilization of the excessive use of chemicals is insufficient, the adverse effect to environment recontamination can be caused.
Changing food waste has the features such as water content is high, content of organics is high, fat content is high, nutrient is abundant, has the biggest
Recycle and be worth, be the resource mislayed.To changing food waste into resources process, can realize food wastes resource,
Innoxious and minimizing, is the only way solving the increasingly serious changing food waste harm of Chinese city, also in compliance with sustainable development
The requirement on Zhan Zhi road.It is to have, according to Lumbricus, the function promoting that organic material decomposition converts in natural ecosystems that Lumbricus is cleared up
On the basis of a biologic treating technique growing up.Lumbricus eats large amount of organic matter in its metabolic processes, and by it
With mixing with soil, promote that organic matter decomposition converts by the biological chemistry action in the mechanical abrasive action of gizzard and intestinal.Due to
Lumbricus has a surprising phagocytic activity (day, the amount of eating was up to the several times of its body weight), and its digestive tract can extracellular proteinase, lipase,
Most organic wastes are had stronger decomposition by the multiple enzymes such as cellulase, chitinase, amylase.Organic
After material is ingested by Lumbricus, small part is directly assimilated utilization, major part through in Lumbricus body grind with squeezing action after with graininess
Discharge, function similarly to the effect of extruder grain, thus reach the purpose of physical modification.
Periodical: " ecological environment journal " 01 phase in 2012 " utilizes kitchen and green garbage to improve Vermicomposting efficiency and processes surplus
The research of remaining mud ", author: Liu Shunhui old high aim Lin Qiuqi Wu Yan, disclose and utilize Lumbricus to clear up kitchen and green garbage
As carbon source, improving carbon-nitrogen ratio, process excess sludge, collectively as composting substrate, have the potentiality that compost is agricultural, Lumbricus disappears
Solve organic carbon content in the earthworm excrement of changing food waste high, be applied to sewage treatment area, the ratio of C/N can be improved, play denitrogenation
The effect of dephosphorization.It is disadvantageous in that, this document has been carried out by mixing changing food waste and green garbage, and improves residue dirt
The correlational study of the degradation speed of mud, but it is for degradation treatment excess sludge, it is achieved the minimizing of mud.
Chinese utility model patent, application number: 201320512621.9, Authorization Notice No.: CN 203402965U, authorize public affairs
Accuse day: 2014.01.22, disclose the tandem earthworm and ecological filter of a kind of efficient denitrification, belong to field of sewage treatment equipment.Its
Including one-level earthworm and ecological filter, also include tank, two grades of earthworm and ecological filters, three grades of earthworm and ecological filters and carbon source regulation
Pond, described tank connects by being connected pipeline with the upper end of one-level earthworm and ecological filter, and on described connection pipeline also
It is provided with the first water pump；By connecting pipeline connection between described one-level earthworm and ecological filter and two grades of earthworm and ecological filters；Institute
The tank stated is connected with carbon source regulating reservoir also by connecting pipeline, and on the connection pipeline between tank and carbon source regulating reservoir
It is additionally provided with the second water pump.This utility model is by appropriate design stages volume and sets up carbon source regulating reservoir, improves secondary effluent
In C/N ratio, on the premise of not affecting other water quality index, be remarkably improved the denitrification effect of earthworm and ecological filter, real
Show the efficient removal of ammonia nitrogen in sewage and total nitrogen.It is disadvantageous in that, its multistage earthworm and ecological filter is only used as water and processes
A part for facility, has preferable removal effect for the sanitary sewage that pollution concentration is relatively low, but its structure is single, by water quality
Affect bigger.
Summary of the invention
1. invention to solve the technical problem that
Not enough for the carbon source clearing up changing food waste in prior art, denitrification effect is poor, the problem that changing food waste pollutes, the present invention
Provide a kind of Lumbricus and clear up the device and method of changing food waste.It can utilize municipal wastewater carbon source to clear up kitchen with convenient and efficient
Rubbish, environmental economical profit is good, and resource utilization is high.
2. technical scheme
For reaching above-mentioned purpose, the technical scheme that the present invention provides is:
A kind of Lumbricus clears up the device of changing food waste, and including Lumbricus digestion system and biochemical system, Lumbricus digestion system is arranged on life
The front portion of change system, pipeline communication is passed through in the bottom of Lumbricus digestion system and the side of biochemical system；In described Lumbricus digestion system
Be followed successively by changing food waste charging aperture from top to bottom, water distribution system, Lumbricus clear up district and spoil disposal region, described spoil disposal sections bottom
It is provided with sludge pump.
Preferably, described Lumbricus clears up the thickness in district is 50cm～80cm.
Preferably, described water distribution system is spiraled by water pipeline and is arranged in Lumbricus digestion system, and at changing food waste charging aperture
Underface leave neutral.
Preferably, the water pipeline of described water distribution system is provided with faucet, water distribution system is provided with water yield controller,
Water yield controller is connected with water pipeline.
Preferably, described Lumbricus is cleared up the bottom in district and has laid the drainage screen that aperture is 1cm～2cm.
A kind of Lumbricus clears up the method for changing food waste, the steps include:
A), build above-described a kind of Lumbricus and clear up the device of changing food waste, closedown water distribution system and sludge pump；
If every square meter Lumbricus throws in the Lumbricus of growth a period of time of dry weight in clearing up district；
Changing food waste is delivered to Lumbricus by changing food waste charging aperture and clears up district, allow Lumbricus eat, after clearing up, clear up generation
Earthworm excrement is in granular form by drainage screen, enters spoil disposal region；
Open water distribution system, controlled the water yield of faucet by water yield controller, Lumbricus is cleared up district and is rinsed, make earthworm
Excrement is completely into spoil disposal region；
B), close water distribution system, and open sludge pump, the earthworm excrement in spoil disposal region is sent into by pipeline the life of municipal sewage plant
In change system；
C), by the pipeline connected with Lumbricus digestion system, the biochemical system of municipal sewage plant receives earthworm excrement as growth of microorganism
Required carbon source, it is achieved the recycling of refuse.
Earthworm excrement puts into, as fertilizer, nutrient, the biochemical system that waste water processes, and can use as the carbon source of biochemical system, reduces
Phosphate fertilizer, the adding of carbamide, it is achieved that the recycling of refuse, the thinking of the treatment of wastes with processes of wastes against one another.
Preferably, described step A) effectively carbon source dosage in municipal wastewater processes is 0.015kg～0.04kg/d t.
Preferably, described step A) in changing food waste to add load be 1.2kg/m2～4kg/m2。
Preferably, described step A) in Lumbricus when clearing up a length of 2 days～5 days.
3. beneficial effect
Use the technical scheme that the present invention provides, compared with existing known technology, there is following remarkable result:
(1) raw material that the present invention utilizes is changing food waste, effectively solves the problem that changing food waste difficulty is put, is disappeared by biology
Solution turns waste into wealth, it is achieved that the resource of changing food waste, innoxious, minimizing, it then follows the requirement of Sustainable Development Road；
(2) the Lumbricus digestion system of the present invention is arranged on the front portion of biochemical system of municipal sewage plant, the bottom of Lumbricus digestion system
Pass through pipeline communication with the side of biochemical system, Lumbricus is cleared up the earthworm excrement that changing food waste produces, is transported in biochemical system, for
Municipal sewage plant provides degradable carbon source, and the pressure that alleviation carbon source is not enough is with strengthened denitrification effect, and ensures that water outlet total nitrogen is dense
Degree stably reaches；
(3) the Lumbricus digestion system of the present invention is followed successively by changing food waste charging aperture from top to bottom, water distribution system, Lumbricus clear up district,
Spoil disposal region and sludge pump, Lumbricus clears up the bottom in district and is provided with drainage screen, and Lumbricus is cleared up the earthworm excrement that changing food waste produces and passed through
Filter screen enters spoil disposal region, opens the earthworm excrement that water distribution system will remain on drainage screen, is all flushed to spoil disposal region, by spoil disposal
Earthworm excrement is transported to biochemical system by pump, and whole device is rational in infrastructure, processing procedure clean hygiene, easy and simple to handle；
(4) the Lumbricus digestion system of the present invention is followed successively by changing food waste charging aperture from top to bottom, water distribution system, Lumbricus clear up district,
Spoil disposal region and sludge pump, Lumbricus clears up the bottom in district and is provided with drainage screen, and overall structure is simple, it is easy to accomplish, cost of manufacture
Low, and changing food waste is readily available, it is simple to wide popularization and application, while solving sewage handling problem, solve again kitchen
The problem of garbage disposal, is particluarly suitable in the sewage disposal of municipal sewage plant extensively applying；
(5) after the present invention utilizes Lumbricus degraded changing food waste, by the setting of Technology, after processing under certain condition
Earthworm excrement is as the carbon source of municipal wastewater processing procedure mesophytization system and nutritive salt, it is achieved the recycling of rubbish, reaches with useless
Control useless purpose；
(6) the system controllable parameter of the present invention is many, while degradation treatment changing food waste, solves carbon source not for water processing establishment
The problem of foot, it is achieved the recycling of refuse, method economical and effective.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that a kind of Lumbricus of the present invention clears up the device of changing food waste.
Label declaration in schematic diagram:
1, changing food waste charging aperture；2, water distribution system；3, Lumbricus clears up district；4, sludge pump；5, biochemical system；6, row
Mud region；7, Lumbricus digestion system.
Detailed description of the invention
For further appreciating that present disclosure, in conjunction with accompanying drawing, the present invention is described in detail.
Embodiment 1
District of Hefei City municipal sewage plant uses SBR technique to carry out sewage disposal.Pending municipal wastewater (the water yield
20000t/d, ammonia nitrogen 35mg/L, COD 420mg/L, total phosphorus 22.7mg/L, suspended material 250mg/L) need after treatment to reach
To urban wastewater treatment firm pollutant emission standard (GB18918-2002) one-level A standard.In order to ensure that municipal wastewater can be steady
Fixed qualified discharge, utilizes the changing food waste of peripheral gauge, is provided with a kind of Lumbricus and clears up the device of changing food waste, for SBR pond
There is provided appropriate effective carbon source, to improve the denitrification effect of SBR technique.
In conjunction with Fig. 1, a kind of Lumbricus clears up the device of changing food waste, and including Lumbricus digestion system 7 and biochemical system 5, Lumbricus is cleared up
The left surface of the bottom of system 7 and biochemical system 5, by pipeline communication, is followed successively by described Lumbricus digestion system 7 from top to bottom
Changing food waste charging aperture 1, water distribution system 2, Lumbricus clear up district 3, spoil disposal region 6 and sludge pump 4.Water distribution system 2 is by sending
Waterpipe spirals and is arranged in Lumbricus digestion system 7, and leaves neutral in the underface of changing food waste charging aperture 1, in order to kitchen
Rubbish can be entered Lumbricus smoothly by water distribution system 2 place plane by changing food waste charging aperture 1 and clear up district 3, water distribution system 2
Water pipeline on be provided with faucet, water distribution system 2 is provided with water yield controller, water yield controller and water pipeline
Connect, in order to control the water yield of water distribution system 2, make earthworm fecal energy enough completely into spoil disposal region 6, select Lumbricus to clear up district 3
Thickness is 50cm, and Lumbricus is cleared up the bottom in district 3 and laid the drainage screen that aperture is 1cm, and Lumbricus clears up what changing food waste produced
Earthworm excrement, by drainage screen, enters spoil disposal region 6, sludge pump 4 sends into biochemical system 5 by pipeline, process for municipal wastewater
Carbon source is provided.
In a manner described Lumbricus is cleared up after the device of changing food waste puts up, review and validate water distribution system 2 and sludge pump 4
It is closed；Every square meter Lumbricus throws in, in clearing up district 3, the Lumbricus 1.5kg (about 3000) that grown 2 months, will be from week
The changing food waste that Region In Yanbian is collected is delivered to Lumbricus by changing food waste charging aperture 1 and is cleared up district 3, allows Lumbricus eat, and changing food waste is thrown
Application of load is every square meter 1.2kg, and every day, dosage controlled at 200kg/d, and effective carbon source dosage in municipal wastewater processes is
0.015kg/d t, after clearing up 5 days, clears up the earthworm excrement of generation and is in granular form and particle diameter is less, it is easy to by drainage screen, the row of entrance
Mud region 6；Open water distribution system 2, controlled the water yield of faucet by water yield controller, Lumbricus is cleared up district 3 and rushes
Wash, make earthworm excrement completely into spoil disposal region 6；Close water distribution system 2, and open sludge pump 4, by the earthworm excrement in spoil disposal region 6
All being sent into by pipeline in the biochemical system 5 of municipal sewage plant, close sludge pump 4, biochemical system 5 is carried out at mix and blend
Stable effluent quality after reason, meets the emission request of national standard (GB18918-2002) one-level A standard, water outlet ammonia nitrogen
2.55mg/L, COD35.4mg/L, total phosphorus 0.18mg/L, suspended material 5.2mg/L, such as table 1.
The water-quality test index situation of district of Hefei City municipal sewage plant in table 1 embodiment 1
Embodiment 2
Jiangsu wuxi district municipal sewage plant uses A2/ O technique carries out sewage disposal, the pending municipal wastewater (water yield
30000t/d, ammonia nitrogen 45mg/L, COD 460mg/L, total phosphorus 28.3mg/L, suspended material 170mg/L) need after treatment to reach
To urban wastewater treatment firm pollutant emission standard (GB18918-2002) one-level A standard.In order to ensure that municipal wastewater can be steady
Fixed qualified discharge, utilizes the changing food waste of peripheral gauge, is provided with a kind of Lumbricus and clears up the device of changing food waste, for SBR pond
There is provided appropriate effective carbon source, to improve the denitrification effect of SBR technique.
In conjunction with Fig. 1, the Lumbricus of the present embodiment clears up the apparatus structure of changing food waste substantially with embodiment 1, and its difference is,
Selecting Lumbricus to clear up district 3 thickness is 80cm, and Lumbricus is cleared up the bottom in district 3 and laid the drainage screen that aperture is 2cm, and Lumbricus disappears
Solve the earthworm excrement that changing food waste produces, by drainage screen, enter spoil disposal region 6, sludge pump 4 send into biochemical system 5 by pipeline,
Process for municipal wastewater and carbon source is provided.
In a manner described Lumbricus is cleared up after the device of changing food waste puts up, review and validate water distribution system 2 and sludge pump 4
It is closed；Every square meter Lumbricus throws in, in clearing up district 3, the Lumbricus 4kg (about 8000) that grown 2 months, will be from week
The changing food waste that Region In Yanbian is collected is delivered to Lumbricus by changing food waste charging aperture 1 and is cleared up district 3, allows Lumbricus eat, and changing food waste is thrown
Application of load is every square meter 4.0kg, and every day, dosage controlled at 1200kg/d, and effective carbon source dosage in municipal wastewater processes is
0.04kg/d t, after clearing up 2 days, the earthworm excrement clearing up generation is in granular form by drainage screen, enters spoil disposal region 6；Open cloth
Water system 2, is controlled the water yield of faucet, Lumbricus is cleared up district 3 and is rinsed, make earthworm excrement complete by water yield controller
Enter spoil disposal region 6；Close water distribution system 2, and open sludge pump 4, the earthworm excrement in spoil disposal region 6 is all sent by pipeline
Enter in the biochemical system 5 of municipal sewage plant, closedown sludge pump 4, stable effluent quality after the process of biochemical system 5 mix and blend,
Meet the emission request of national standard (GB18918-2002) one-level A standard, water outlet ammonia nitrogen 3.15mg/L, COD20.8mg/l,
Total phosphorus 0.28mg/L, suspended material 4.16mg/L, such as table 2.
The water-quality test index situation of jiangsu wuxi district municipal sewage plant in table 2 embodiment 1
Embodiment 3
Anhui district municipal sewage plant uses A2/ O technique carries out sewage disposal, pending municipal wastewater (water yield 35000t/d,
Ammonia nitrogen 40mg/L, COD 440mg/L, total phosphorus 25.5mg/L, suspended material 210mg/L) need after treatment to reach town sewage
Treatment plant's pollutant emission standard (GB18918-2002) one-level A standard.In order to ensure the row up to standard that municipal wastewater can be stable
Put, utilize the changing food waste of peripheral gauge, be provided with a kind of Lumbricus and clear up the device of changing food waste, provide appropriate for SBR pond
Effectively carbon source, to improve the denitrification effect of SBR technique.
In conjunction with Fig. 1, the Lumbricus of the present embodiment clears up the apparatus structure of changing food waste substantially with embodiment 1, and its difference is,
Selecting Lumbricus to clear up district 3 thickness is 65cm, and Lumbricus is cleared up the bottom in district 3 and laid the drainage screen that aperture is 1.5cm, and Lumbricus disappears
Solve the earthworm excrement that changing food waste produces, by drainage screen, enter spoil disposal region 6, sludge pump 4 send into biochemical system 5 by pipeline,
Process for municipal wastewater and carbon source is provided.
In a manner described Lumbricus is cleared up after the device of changing food waste puts up, review and validate water distribution system 2 and sludge pump 4
It is closed；Every square meter Lumbricus throws in, in clearing up district 3, the Lumbricus 2.75kg (about 5500) that grown 2 months, will be from
The changing food waste that surrounding area is collected is delivered to Lumbricus by changing food waste charging aperture 1 and is cleared up district 3, allows Lumbricus eat, changing food waste
Adding load is every square meter 2.6kg, and every day, dosage controlled at 700kg/d, effective carbon source dosage in municipal wastewater processes
For 0.03kg/d t, after clearing up 3.5 days, the earthworm excrement clearing up generation is in granular form by drainage screen, enters spoil disposal region 6；Beat
Open water distribution system 2, controlled the water yield of faucet by water yield controller, Lumbricus is cleared up district 3 and is rinsed, make earthworm excrement
Completely into spoil disposal region 6；Close water distribution system 2, and open sludge pump 4, the earthworm excrement in spoil disposal region 6 is complete by pipeline
Portion sends in the biochemical system 5 of municipal sewage plant, closes sludge pump 4, and after biochemical system 5 mix and blend processes, effluent quality is steady
Fixed, meet the emission request of national standard (GB18918-2002) one-level A standard, water outlet ammonia nitrogen 2.85mg/L, COD28.1mg/l,
Total phosphorus 0.23mg/L, suspended material 4.68mg/L, such as table 3.
The water-quality test index situation of Anhui district municipal sewage plant in table 3 embodiment 3
Claims (9)
1. Lumbricus clears up a device for changing food waste, and including Lumbricus digestion system (7) and biochemical system (5), its feature exists
In, Lumbricus digestion system (7) is arranged on the front portion of biochemical system (5), the bottom of Lumbricus digestion system (7) and biochemical system
(5) pipeline communication is passed through in side；
Be followed successively by changing food waste charging aperture (1) in described Lumbricus digestion system (7) from top to bottom, water distribution system (2), Lumbricus disappear
Xie Qu (3) and spoil disposal region (6), described bottom, spoil disposal region (6) is provided with sludge pump (4).
2. clear up the device of changing food waste according to a kind of Lumbricus described in claims 1, it is characterised in that described Lumbricus is cleared up
The thickness in district (3) is 50cm～80cm.
3. clear up the device of changing food waste according to a kind of Lumbricus described in claims 1, it is characterised in that described water distribution system
(2) in being spiraled by water pipeline and being arranged on Lumbricus digestion system (7), and stay in the underface of changing food waste charging aperture (1)
There is neutral.
4. clear up the device of changing food waste according to a kind of Lumbricus described in claims 1 or 3, it is characterised in that described water distribution
Being provided with faucet on the water pipeline of system (2), water distribution system (2) is provided with water yield controller, water yield controls
Device is connected with water pipeline.
5. clear up the device of changing food waste according to a kind of Lumbricus described in claims 2, it is characterised in that described Lumbricus is cleared up
The drainage screen that aperture is 1cm～2cm has been laid in the bottom in district (3).
6. the method that Lumbricus clears up changing food waste, the steps include:
A), build a kind of Lumbricus described in claim 1 and clear up the device of changing food waste, closedown water distribution system (2) and spoil disposal
Pump (4)；
Every square meter Lumbricus clear up district (3) if in throw in the Lumbricus of growth a period of time of dry weight；
Changing food waste is delivered to Lumbricus by changing food waste charging aperture (1) and clears up district (3), allow Lumbricus eat, after clearing up, disappear
Solve the earthworm excrement produced and be in granular form by drainage screen, enter spoil disposal region (6)；
Open water distribution system (2), controlled the water yield of faucet by water yield controller, Lumbricus is cleared up district (3) and rushes
Wash, make earthworm excrement completely into spoil disposal region (6)；
B), close water distribution system (2), and open sludge pump (4), earthworm excrement inner to spoil disposal region (6) is sent into by pipeline
In the biochemical system (5) of municipal sewage plant；
C), by the pipeline connected with Lumbricus digestion system (7), the biochemical system (5) of municipal sewage plant receives earthworm excrement conduct
Carbon source needed for growth of microorganism, it is achieved the recycling of refuse.
Earthworm excrement puts into, as fertilizer, nutrient, the biochemical system that waste water processes, and can use as the carbon source of biochemical system, reduces
Phosphate fertilizer, the adding of carbamide, it is achieved that the recycling of refuse, the thinking of the treatment of wastes with processes of wastes against one another.
7. the method clearing up changing food waste according to a kind of Lumbricus described in claims 6, it is characterised in that described step A)
Effectively carbon source dosage in municipal wastewater processes is 0.015kg～0.04kg/d t.
8. the method clearing up changing food waste according to a kind of Lumbricus described in claims 6, it is characterised in that described step A)
It is 1.2kg/m that middle changing food waste adds load2～4kg/m2。
9. the method clearing up changing food waste according to a kind of Lumbricus described in claims 6, it is characterised in that described step A)
Middle Lumbricus when clearing up a length of 2 days～5 days.
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| CN111642379A (en) * | 2020-05-25 | 2020-09-11 | 安徽师范大学 | Device for directly digesting kitchen waste into agricultural and forestry crop fertilizer and saving water for irrigation |
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