CN109277394A - A kind of device and method extracting sewage treatment plant's carbon source from rubbish from cooking - Google Patents
A kind of device and method extracting sewage treatment plant's carbon source from rubbish from cooking Download PDFInfo
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- CN109277394A CN109277394A CN201811074183.6A CN201811074183A CN109277394A CN 109277394 A CN109277394 A CN 109277394A CN 201811074183 A CN201811074183 A CN 201811074183A CN 109277394 A CN109277394 A CN 109277394A
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- rubbish
- cooking
- sewage treatment
- carbon source
- treatment plant
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- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 130
- 238000010411 cooking Methods 0.000 title claims abstract description 118
- 239000010865 sewage Substances 0.000 title claims abstract description 64
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 52
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000706 filtrate Substances 0.000 claims abstract description 39
- 238000003756 stirring Methods 0.000 claims abstract description 30
- 230000005484 gravity Effects 0.000 claims abstract description 23
- 238000002791 soaking Methods 0.000 claims abstract description 16
- 230000001112 coagulating effect Effects 0.000 claims abstract description 13
- 238000010008 shearing Methods 0.000 claims abstract description 11
- 230000015271 coagulation Effects 0.000 claims abstract description 10
- 238000005345 coagulation Methods 0.000 claims abstract description 10
- 238000007654 immersion Methods 0.000 claims abstract description 10
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 4
- 238000004062 sedimentation Methods 0.000 claims description 13
- 235000019738 Limestone Nutrition 0.000 claims description 9
- 239000006028 limestone Substances 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 7
- 239000010802 sludge Substances 0.000 claims description 7
- 239000013049 sediment Substances 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000004519 grease Substances 0.000 abstract description 2
- 230000001376 precipitating effect Effects 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 1
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 1
- 239000004571 lime Substances 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- 238000000855 fermentation Methods 0.000 description 9
- 230000004151 fermentation Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 235000017281 sodium acetate Nutrition 0.000 description 4
- 239000001632 sodium acetate Substances 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- 235000013311 vegetables Nutrition 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000209149 Zea Species 0.000 description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 239000010794 food waste Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000006396 nitration reaction Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010806 kitchen waste Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011165 process development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009469 supplementation Effects 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Food Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to a kind of device and methods that sewage treatment plant's carbon source is extracted from rubbish from cooking.Device includes Double-shaft shearing crusher (1), crushing grate (2), soaking and stirring bucket (3), gravity pipe (4) and pressafiner (5) etc..Method includes the following steps: first to be crushed rubbish from cooking, it impregnates in the hot water, solidliquid mixture after immersion is squeezed and is obtained by filtration rubbish from cooking filtrate, then ferric trichloride and lime are successively added in rubbish from cooking filtrate, coagulating is carried out under stiring, and upper layer rubbish from cooking filtrate and municipal sewage is taken to merge processing after precipitating.The organic carbon source in rubbish from cooking is discharged by hot-water soak, amount of grease is eliminated by coagulation, improve rubbish from cooking liquor C/N and C/P, carbon source needed for rubbish from cooking filtrate can be used as the reaction of sewage treatment plant's denitrogenation dephosphorizing uses, mark transformation is proposed for sewage treatment plant to contribute, stink generation is reduced simultaneously, achievees the purpose that rubbish from cooking recycling.
Description
Technical field
The present invention relates to fixed-end forces and water treatment field, particularly relate to a kind of from rubbish from cooking extraction sewage treatment plant's carbon
The device and method in source.
Background technique
Degradable COD (COD) contained in general municipal sewage is limited, in low-carbon-source sewage treatment system
In system, C/N (carbon-nitrogen ratio) lower phenomenon is more prominent, in sewage disposal process, is releasing between phosphorus and anti-nitration reaction, is depositing
In the competitive contradiction for obtaining carbon source caused by carbon source deficiency, dephosphorization and denitrogenation is made to cannot concurrently reach ideal effect.
Therefore under the flooded condition of general municipal sewage plant, biological effect is only leaned on, denitrogenation and dephosphorization efficiency are generally all lower.
To carry out State Council's " water prevention and cure of pollution action plan " (promulgated by the State Council [2015] 17) comprehensively, municipal sewage at present
Treatment plant is carrying out mentioning mark upgrading, and status is that most of effluent index can achieve " urban wastewater treatment firm dirt
Contaminating object discharge standard " (GB18918-2002) level-one A is horizontal, but the treatment effect of dephosphorization denitrogenation is still difficult to stably reaching standard.Except by
Outside the factors such as production technology and operational management influence, it is largely because water-inlet carbon source deficiency.
For the nitric efficiency for improving low-carbon-source sewage treatment system, lot of domestic and foreign scholar and engineer have carried out multinomial grind
Study carefully and become research hotspot using work, internal process optimization and new process development research, but from the point of view of operational effect, for low
The processing of carbon source sewage, above-mentioned various techniques are still limited to the improvement result of denitrogenation dephosphorizing, and whole denitrification effect is still not
Height, total phosphorus effect deteriorate；In the reply municipal sewage that organic concentration is lower, C/N is relatively low, sewage treatment plant is generally adopted
With the mode of additional carbon (such as methanol, sodium acetate and corn flour), standard water discharge is acquired.But that there are storing and transporting securities is hidden for methanol
Suffer from, it is approximately 3 times of methanol or more that the reagent cost of sodium acetate and corn flour is too high, and uses and add the business carbon source such as methanol
Mode not only increases economic cost, while also having violated the objective of energy-saving and emission-reduction, low energy consumption.It is raw for sewage treatment denitrogenation
Change method is clearly method the most economic, before all kinds of newest Nitrogen Removal Mechanisms not yet make a breakthrough, nitration denitrification
Mechanism is the unique channel of biological denitrificaion, therefore exploitation is had excellent performance, cheap substitution business carbon source is to solve denitrogenation to ask
The important research direction of topic.
China's rubbish from cooking disposal status is still in more original level, mainly receives and transports with other domestic garbage mixings,
Then enter subsequent processing together with other house refuses and dispose factory.Amount of landfill in the innoxious house refuse in China in 2016
66.52%, burning amount 31.24%, otherwise processed amount 2.24%.
In recent years, China widelys popularize garbage classification, daily to generate largely since garbage classification is implemented in some areas
The rubbish from cooking of classification continues to promote with garbage classification work, and the quantity of rubbish from cooking is continuously increased.
Pretreatment and independent treatment process to rubbish from cooking are concentrated mainly on to from the relevant patent of rubbish from cooking at present
On, such as Chinese patent application 2012104485498 " kitchen garbage pre-treatment technology and system ", rubbish from cooking is sorted,
Broken and dehydration pretreatment；As Chinese patent application 201810130435.6 " a kind of executive device, size degradation pulp all-in-one machine and
Kitchen garbage processing system " carries out the pretreatment of size degradation and pulp to rubbish from cooking；Such as Chinese patent application
2012102722323 " a method of rubbish from cooking is handled using kitchen refuse processing apparatus ", at two-phase anaerobic digestion
It manages device and handles rubbish from cooking.But the above application pertains only to rubbish from cooking processing itself.
Summary of the invention
The purpose of the present invention is to provide a kind of device and methods that sewage treatment plant's carbon source is extracted from rubbish from cooking, to kitchen
Remaining rubbish carries out resource utilization, while saving the expense that sewage treatment plant adds carbon source.
Technical scheme is as follows:
Technical solution one:
A kind of device extracting sewage treatment plant's carbon source from rubbish from cooking comprising:
Double-shaft shearing crusher (1), Double-shaft shearing crusher (1) lower section are equipped with a crushing grate (2), crushing grate
(2) lower section is equipped with soaking and stirring bucket (3), and soaking and stirring bucket (3) bottom or side is equipped with gravity pipe (4), gravity pipe (4) and spiral
Squeezer (5) connection, pressafiner (5) are equipped with outlet pipe (6) and discharge port (7), and outlet pipe connects collecting-tank (8), catchments
Have a submersible sewage pump (9) in pond (8), the outlet pipe of submersible sewage pump (9) connects coagulating sedimentation bucket (10).
Soaking and stirring bucket (3) is at least connected with a hot water inlet pipe (11), and hot water inlet pipe (11) has temperature instrumentation (12), is impregnated
Agitating device (13) are equipped in agitator；Gravity pipe (4) conduit slope is greater than 15 °, and gravity pipe is equipped with valve (14)；Coagulation is heavy
Frequency conversion agitating device (15) are equipped in shallow lake bucket (10), an at least outlet conduit (16) makes rubbish from cooking on coagulating sedimentation bucket (10)
Filtrate enters sewage treatment plant；Bed mud is discharged in a coagulating sedimentation bucket bottom at least sludge pipe (18).
In the preferred embodiment, outlet conduit (16) is equipped with valve (17), and sludge pipe (18) is equipped with valve
Door (19)
In the preferred embodiment, the blade thickness of Double-shaft shearing crusher (1) is 18-22mm.
In the preferred embodiment, the grid gap of crushing grate (2) is 8-12mm.
In the preferred embodiment, soaking and stirring bucket (3) side is additionally provided with heat preservation bed course.
In the preferred embodiment, gravity pipe (4) gradient of soaking and stirring bucket (3) is 5 °.
In the preferred embodiment, the tail portion filter screen of pressafiner (5) is 150 mesh.
In the preferred embodiment, the discharge port (7) of pressafiner (5) is the discharge nozzle of 45 ° of gradient upward.
Technical solution two:
A method of sewage treatment plant's carbon source being extracted from rubbish from cooking, is included the following steps:
1) it is crushed: using Double-shaft shearing crusher and crushing grate, be crushed fresh rubbish from cooking, diameter is made to be less than 20mm.
2) it impregnates: impregnating the rubbish from cooking 20-40min being crushed in the hot water；Hot water quality is used in the rubbish from cooking and immersion
Than for 1:0.5-1:4kg/L；Described impregnate is controlled with hot water temperature at 40-70 DEG C；
3) squeeze and filter: the solidliquid mixture of immersion is delivered to pressafiner by gravity pipe and handles, and isolates rubbish from cooking
Slag and rubbish from cooking filtrate.
4) liquor ferri trichloridi (FeCl3) and pulverized limestone (CaO), trichlorine successively coagulating sedimentation: are added in rubbish from cooking filtrate
Change 0.05 ‰ -2 ‰ that iron dosage is rubbish from cooking filtrate in mass ratio；Pulverized limestone dosage is rubbish from cooking in mass ratio
The 0.05%-2% of filtrate；Coagulation is stirred, after first stirring 0.5-5min with the revolving speed of 100-300r/min, then with 50-200r/
The revolving speed of min stirs 3-10min；After staticly settling, take upper layer rubbish from cooking filtrate as municipal sewage plant's carbon source, under
Layer precipitating (bed mud) discharge, the sludge merging treatment with sewage treatment plant.
In the preferred embodiment, it is fresh rubbish from cooking in 3 days that the rubbish from cooking, which is generation time, is contained
Water rate 75-85%.
In the preferred embodiment, the rubbish from cooking is 1:1-1:2 with hot water quality's ratio with immersion.
In the preferred embodiment, the control of step 2) temperature is at 50-60 DEG C.
In the preferred embodiment, it is heated sewage treatment plant tail water that step 2), which is impregnated with hot water, is saved
With water cost.
In the preferred embodiment, the rubbish from cooking slag moisture content that step 3) pressafiner is isolated is 65-
75%.
In the preferred embodiment, it is liquor ferri trichloridi (mass fraction 38%) that step 4), which adds, is added
Amount is the 0.1 ‰ -1 ‰ of rubbish from cooking filtrate quality, and pulverized limestone (mass fraction 65%, 180 mesh) dosage is rubbish from cooking filter
The 0.1%-1% of liquid quality.
In the preferred embodiment, step 4) stirring means are first to stir 0.5- with the revolving speed of 150-250r/min
After 2min, then with the revolving speed stirring 4-6min of 50-150r/min.
In the preferred embodiment, step 4) staticly settles the time as 25-35min.
The present invention has the advantage that compared with existing other technologies
1) sewage treatment plant's denitrogenation dephosphorizing requires supplementation with carbon source.Rubbish from cooking main component is organic matter, containing a large amount of
Organic carbon, after processing, the rubbish from cooking liquor C OD concentration extracted is significantly larger than the water inlet of sewage treatment plant to rubbish from cooking
COD is practically free of heavy metal, has and is used as sewage treatment plant's carbon source feasibility.Using apparatus of the present invention and method to food waste rubbish
Rubbish is crushed, hot-water soak and squeeze and filter, the carbon source in rubbish from cooking can be discharged into rubbish from cooking filtrate, simultaneously
Stink is reduced to generate.
The coagulant sedimentation that the present invention uses has the characteristics that simple process, equipment are easy to install and easy to operate, uses coagulation
The precipitation method handle rubbish from cooking filtrate, reduce grease, reduce nitrogen, the phosphorus load of subsequent biochemical processing, improve C/N and C/
P improves the quality of rubbish from cooking filtrate (carbon source water).
Rubbish from cooking is cooperateed with processing with sanitary sewage by the present invention, by a large amount of rubbish from cooking resource utilization, for life
Sewage treatment plant provides carbon source, proposes mark transformation for sewage treatment plants and qualified discharge contributes.
(1) process is simple to operation, and operating cost is low: the present invention is crushed rubbish from cooking, hot-water soak, squeezing and
Filtering, then rubbish from cooking filtrate is further improved using ferric trichloride and pulverized limestone, the medicament ferric trichloride and pulverized limestone added
It is at low cost.Using sewage treatment plant tail water heating as hot water is impregnated, cost is saved water.
(2) it realizes rubbish from cooking resource utilization, reduces sewage treatment plant's carbon source and add cost: technology involved in the present invention
It realizes rubbish from cooking recycling, discharges the carbon source in rubbish from cooking, as carbon source needed for the reaction of sewage treatment plant's denitrogenation dephosphorizing
It uses, reduces municipal sewage plant's carbon source and add cost, feasibility is strong, has broad application prospects.The present invention uses kitchen
Remaining leachate solves the problems, such as that the carbon sources cost such as sodium acetate is too high, rubbish from cooking per ton is treated by the present method as carbon source
The rubbish from cooking filtrate substitution sodium acetate generated afterwards is added as sewage treatment plant's carbon source, can save 120 yuan of branch carbon source cost.Together
When, it avoids using the bring hazardous chemical use of the carbon sources such as methanol and storage and transportation risk, while solving the place of rubbish from cooking
Problem is managed, the purpose of organic solid castoff recycling collaboration processing disposition is realized.
(3) improve sewage treatment plant's Nitrogen/Phosphorus Removal, promote qualified discharge: the present invention uses the conduct of rubbish from cooking filtrate
The method of strengthened denitrification carbon source realizes the effect of efficient denitrification, can effectively improve the denitrogenation effect of low-carbon-source sewage treatment system
Rate, while can also improve the removal rate of total phosphorus.
(4) reduction is obvious, reduces subsequent transportation and processing cost of disposal: the technology is used, after broken squeezing
Kitchen waste reduction significant effect, reduce rubbish from cooking transport and processing cost of disposal, reduce rubbish to surrounding enviroment
Influence.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structural schematic diagram of apparatus of the present invention.
Specific embodiment
Referring to Fig. 1, a kind of device that sewage treatment plant's carbon source is extracted from rubbish from cooking of the present invention comprising:
Double-shaft shearing crusher 1, is equipped with a crushing grate 2 below the Double-shaft shearing crusher 1, under crushing grate 2
Side is equipped with soaking and stirring bucket 3, and 3 side lower half of soaking and stirring bucket is equipped with gravity pipe 4, and the outlet of gravity pipe 4 connects screw press
Machine 5, pressafiner 5 are equipped with outlet pipe 6 and discharge port 7, and outlet pipe 6 connects collecting-tank 8, has a submersible sewage pump 9 in collecting-tank 8,
The water of collecting-tank 8 is transported in coagulating sedimentation bucket 10 by submersible sewage pump 9.
Wherein, soaking and stirring bucket 3 is at least connected with a hot water inlet pipe 11, which has temperature instrumentation 12,
Agitating device 13 is equipped in soaking and stirring bucket 3；4 conduit slope of gravity pipe is greater than 15 °, and gravity pipe is equipped with valve 14.
Frequency conversion agitating device 15 is equipped in coagulating sedimentation bucket 10, an at least outlet conduit 16 makes kitchen on coagulating sedimentation bucket 10
Remaining leachate enters sewage treatment plant, and outlet conduit 16 is equipped with valve 17, a coagulating sedimentation bucket bottom at least spoil disposal
Bed mud is discharged in pipe 18, and sludge pipe 18 is equipped with valve 19.
Preferably, the blade thickness of Double-shaft shearing crusher 1 is 20mm.
Preferably, the grid gap of crushing grate 2 is 10mm.
Preferably, 3 side of soaking and stirring bucket is additionally provided with heat preservation bed course.
Preferably, 4 gradient of gravity pipe of soaking and stirring bucket 3 is 25 °.
Preferably, the tail portion filter screen of pressafiner 5 is 150 mesh.
Preferably, the discharge port 7 of pressafiner 5 is the discharge nozzle of 45 ° of gradient upward.
Embodiment 1:
In 1kg:2L ratio immersion 1h, filtering obtains rubbish from cooking filtrate for rubbish from cooking and 55 DEG C of hot water.Rubbish from cooking filter
Liquid heavy metal index: Cu 0.09mg/L, Pb 0.28mg/L, Zn 0.54mg/L, Cr < 0.03mg/L, Cd 0.02mg/L, Ni
0.20mg/L, As 0.0047mg/L, Hg 0.0005mg/L.
" sewage is discharged into town sewer water standard " (GB 31962-2015) item controlled limit value (A grades) are as follows: Cu
2mg/L, Pb 0.5mg/L, Zn 5mg/L, Cr 1.5mg/L, Cd 0.05mg/L, Ni 1mg/L, As 0.3mg/L, Hg
0.005mg/L。
" urban wastewater treatment firm pollutant emission standard " (GB 18918-2002) highest allows concentration of emission are as follows: Cu
0.5mg/L, Pb 0.1mg/L, Zn 1.0mg/L, Cr 0.1mg/L, Cd 0.01mg/L, Ni 0.05mg/L, As 0.1mg/L,
Hg 0.001mg/L。
The heavy metal index of rubbish from cooking filtrate is far below " sewage is discharged into town sewer water standard " (GB
31962-2015) item controlled limit value；Except Pb, Cd and Ni index are slightly above " urban wastewater treatment firm pollutant emission standard "
(GB 18918-2002) highest allows outside concentration of emission, other indexs of rubbish from cooking filtrate, which are below highest, allows concentration of emission.
It is possible thereby to determine that the content of beary metal of rubbish from cooking filtrate is low, municipal sewage plant can be entered and handled.
In the beaker equipped with 2L rubbish from cooking filtrate, 1.74g FeCl is first added3(mass fraction 38%), adds
9.24g CaO (mass fraction 65%, 180 mesh) is stirred after the revolving speed of 200r/min stirs 1min, then with the revolving speed of 100r/min
Mix 5min.Rubbish from cooking filtrate takes supernatant to chemically examine after standing 30min after coagulation.TN removal rate is removed up to 29% or more, TP
Rate is up to 84% or more, and petroleum-type removal rate is up to 94% or more, and vegetable and animals oils removal rate is up to 98% or more, and COD is removed
Rate is only 5% or so.C/N and C/P is respectively increased by 26.4 and the 143.8 of former rubbish from cooking filtrate to 35.1 and 342.5 respectively.
Embodiment 2:
Rubbish from cooking is conveyed by gravity or artificial scraper is sent to crusher and crushing grate, is less than diameter
20mm.The rubbish from cooking is that generation time is fresh rubbish from cooking in 3 days, moisture content 80% or so.Then pass through gravity
Fermentation vat is delivered into, 55 DEG C of hot water (rubbish from cooking and immersion hot water quality ratio 1:1.5) is added in fermentation vat, impregnates
30min.The solidliquid mixture of fermentation vat is delivered to squeezer squeezing, is separated into rubbish from cooking slag and rubbish from cooking filtrate.It takes
5.22g FeCl is first added in beaker in 3L filtrate3(mass fraction 38%), add 32.2g CaO (mass fraction 65%,
180 mesh), 5min is stirred after the revolving speed of 200r/min stirs 1min, then with the revolving speed of 100r/min.Rubbish from cooking is filtered after coagulation
Liquid stands 30min, and supernatant is taken to chemically examine.Up to 41% or more, TP removal rate up to 80% or more, petroleum-type removes TN removal rate
Rate is up to 99% or more, and vegetable and animals oils removal rate is up to 97% or more, and COD removal rate is only 7% or so.C/N and C/P difference
It is respectively increased by 29.8 and the 173.1 of former rubbish from cooking filtrate to 47.0 and 832.2.
Embodiment 3:
Rubbish from cooking is conveyed by gravity or artificial scraper is sent to crusher and crushing grate, is less than diameter
20mm.The rubbish from cooking is that generation time is fresh rubbish from cooking in 3 days, moisture content 80% or so.Then pass through gravity
Fermentation vat is delivered into, 55 DEG C of hot water (rubbish from cooking and immersion hot water quality ratio 1:1.5) is added in fermentation vat, impregnates
30min.The solidliquid mixture of fermentation vat is delivered to squeezer squeezing, is separated into rubbish from cooking slag and rubbish from cooking filtrate, it will
Rubbish from cooking filtrate is delivered to coagulation reaction device.3m is being housed3In the coagulation reaction device of rubbish from cooking filtrate, successively add
0.33‰FeCl3Solution (mass fraction 38%) and 0.7% pulverized limestone, after the revolving speed of 200r/min stirs 1min, then with
The revolving speed of 100r/min stirs 5min, and rubbish from cooking filtrate stands 30min after coagulation, and supernatant is taken to chemically examine.TN removal rate is reachable
37% or more, TP removal rate are up to 81% or more, and petroleum-type removal rate is up to 99% or more, and vegetable and animals oils removal rate is up to 92%
More than, and COD removal rate is 25% or so.C/N and C/P is respectively increased by 29.8 and the 173.1 of former rubbish from cooking filtrate respectively
To 35.6 and 678.9, it is much higher than the average annual C/N of sewage treatment plant of Xiamen City (about 6) and C/P (about 50), can be used as sewage treatment
Carbon source needed for the reaction of factory's denitrogenation dephosphorizing uses.
Embodiment 4:
Handle 2180kg rubbish from cooking.First sorting out glass, rubber, porcelain, plastics etc. can recycle or be unfavorable for
The material of subsequent processing disposing technique, to ensure the safety and stability of aftertreatment systems；Again by the food waste rubbish after sorting
Rubbish is conveyed by gravity or artificial scraper is sent to crusher and crushing grate, then delivers into fermentation vat by gravity,
55 DEG C of hot water (rubbish from cooking and immersion hot water quality ratio 1:1.5) is added in fermentation vat, impregnates 30min.By consolidating for fermentation vat
Liquid mixture is delivered to squeezer squeezing, is separated into rubbish from cooking slag and rubbish from cooking filtrate.It counts the sundries sorted out, impregnate
Bucket bottom deposit sandstone and the rubbish from cooking weight squeezed out, total 524.5kg.It is handled through the present apparatus and method, rubbish from cooking subtracts
Dose rate is 76%, and reduction is significant, and subsequent transportation and processing cost of disposal can be greatly decreased.
Claims (10)
1. a kind of device for extracting sewage treatment plant's carbon source from rubbish from cooking characterized by comprising
Double-shaft shearing crusher (1), Double-shaft shearing crusher (1) lower section are equipped with a crushing grate (2), crushing grate (2)
Lower section is equipped with soaking and stirring bucket (3), and soaking and stirring bucket (3) bottom or side is equipped with gravity pipe (4), gravity pipe (4) and spiral pressure
Crusher (5) connection, pressafiner (5) are equipped with outlet pipe (6) and discharge port (7), and outlet pipe connects collecting-tank (8), collecting-tank
(8) have a submersible sewage pump (9) in, the outlet pipe of submersible sewage pump (9) connects coagulating sedimentation bucket (10), wherein
The soaking and stirring bucket (3) is at least connected with a hot water inlet pipe (11), and hot water inlet pipe (11) has temperature instrumentation (12),
Agitating device (13) are equipped in soaking and stirring bucket；Gravity pipe (4) conduit slope is greater than 15 °, and gravity pipe is equipped with valve (14)；It is mixed
Frequency conversion agitating device (15) are equipped in solidifying settling box (10), at least one is set on coagulating sedimentation bucket (10) enters rubbish from cooking filtrate
To the outlet conduit (16) of sewage treatment plant, a coagulating sedimentation bucket bottom at least sludge pipe (18).
2. a kind of device for extracting sewage treatment plant's carbon source from rubbish from cooking as described in claim 1, which is characterized in that water outlet
Pipeline (16) is equipped with valve (17), and sludge pipe (18) is equipped with valve (19).
3. a kind of method for extracting sewage treatment plant's carbon source from rubbish from cooking, using device of any of claims 1 or 2, including
Following steps:
1) it is crushed: fresh rubbish from cooking being crushed using Double-shaft shearing crusher (1) and crushing grate (2), is less than diameter
20mm；
2) it impregnates: impregnating the rubbish from cooking 20-40min being crushed in the hot water；Hot water quality is used in the rubbish from cooking and immersion
Than for 1:0.5-1:4kg/L；Described impregnate is controlled with hot water temperature at 40-70 DEG C；
3) squeeze and filter: the solidliquid mixture impregnated is delivered to pressafiner (5) processing by gravity pipe (4), isolates
Rubbish from cooking slag and rubbish from cooking filtrate；
4) coagulating sedimentation: successively adding liquor ferri trichloridi and pulverized limestone in rubbish from cooking filtrate, and ferric trichloride dosage is
The 0.05 ‰ -2 ‰ of rubbish from cooking filtrate in mass ratio；Pulverized limestone dosage is the 0.05%- of rubbish from cooking filtrate in mass ratio
2%；Coagulation is stirred, after first stirring 0.5-5min with the revolving speed of 100-300r/min, then with the revolving speed stirring 3- of 50-200r/min
10min；After staticly settling 20-40min, take upper layer rubbish from cooking filtrate as municipal sewage plant's carbon source, lower sediment
Discharge, the sludge merging treatment with sewage treatment plant.
4. a kind of method for extracting sewage treatment plant's carbon source from rubbish from cooking as claimed in claim 3, it is characterised in that step
1) in, the rubbish from cooking is that generation time is fresh rubbish from cooking in 3 days, moisture content 75-85%.
5. a kind of method for extracting sewage treatment plant's carbon source from rubbish from cooking as claimed in claim 3, it is characterised in that step
2) in, the rubbish from cooking is 1:1-1:2kg/L with hot water quality's ratio with immersion.
6. a kind of method for extracting sewage treatment plant's carbon source from rubbish from cooking as claimed in claim 3, it is characterised in that step
2) in, described impregnate is controlled with hot water temperature at 50-60 DEG C.
7. a kind of method for extracting sewage treatment plant's carbon source from rubbish from cooking as claimed in claim 3, it is characterised in that step
3) in, the rubbish from cooking slag moisture content that the pressafiner is isolated is 65-75%.
8. a kind of method for extracting sewage treatment plant's carbon source from rubbish from cooking as claimed in claim 3, it is characterised in that step
4) in, adding is liquor ferri trichloridi, mass fraction 38%, and dosage is 0.1 ‰ -1 ‰；Pulverized limestone mass fraction 65%,
Dosage is 0.1%-1%.
9. a kind of method for extracting sewage treatment plant's carbon source from rubbish from cooking as claimed in claim 3, it is characterised in that step
4) in, after the stirring means are the first revolving speed stirring 0.5-2min with 150-250r/min, then with the revolving speed of 50-150r/min
Stir 4-6min.
10. a kind of method for extracting sewage treatment plant's carbon source from rubbish from cooking as claimed in claim 3, it is characterised in that step
4) described to staticly settle the time as 25-35min in.
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| CN110615580A (en) * | 2019-09-25 | 2019-12-27 | 江苏泓润生物质能科技有限公司 | Method for using pretreated kitchen waste as denitrification carbon source in sewage treatment |
| CN111298943A (en) * | 2020-03-27 | 2020-06-19 | 陕西山秦能源技术服务有限公司 | Oily waste crushing and grinding treatment equipment and treatment method thereof |
| CN112573782A (en) * | 2020-12-29 | 2021-03-30 | 安徽国祯环卫科技有限公司 | Method for treating urban sewage and rapidly denitrifying by using kitchen waste fermentation liquor |
| CN113477681A (en) * | 2021-07-20 | 2021-10-08 | 四川洵远科技有限公司 | Device and treatment process for removing oil and salt from kitchen waste |
| CN113770157A (en) * | 2021-09-03 | 2021-12-10 | 杭州市环境集团有限公司 | Method for preparing sewage carbon source by using kitchen waste and feasibility testing method thereof |
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