CN111036643A - Method for cooperatively treating kitchen waste, household garbage and sludge of sewage plant - Google Patents
Method for cooperatively treating kitchen waste, household garbage and sludge of sewage plant Download PDFInfo
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- CN111036643A CN111036643A CN201911134638.3A CN201911134638A CN111036643A CN 111036643 A CN111036643 A CN 111036643A CN 201911134638 A CN201911134638 A CN 201911134638A CN 111036643 A CN111036643 A CN 111036643A
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- 239000010802 sludge Substances 0.000 title claims abstract description 141
- 239000010806 kitchen waste Substances 0.000 title claims abstract description 82
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000010865 sewage Substances 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000007788 liquid Substances 0.000 claims abstract description 54
- 238000000926 separation method Methods 0.000 claims abstract description 51
- 239000010791 domestic waste Substances 0.000 claims abstract description 32
- 238000001035 drying Methods 0.000 claims abstract description 27
- 239000004519 grease Substances 0.000 claims abstract description 16
- 239000007790 solid phase Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000012071 phase Substances 0.000 claims description 34
- 238000004056 waste incineration Methods 0.000 claims description 14
- 238000000746 purification Methods 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 238000010248 power generation Methods 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 9
- 239000003546 flue gas Substances 0.000 claims description 9
- 238000007670 refining Methods 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 230000018044 dehydration Effects 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
- 239000003344 environmental pollutant Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 231100000719 pollutant Toxicity 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 230000002195 synergetic effect Effects 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000004332 deodorization Methods 0.000 claims description 3
- 238000002309 gasification Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 238000000855 fermentation Methods 0.000 abstract description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007791 liquid phase Substances 0.000 abstract description 4
- 239000003345 natural gas Substances 0.000 abstract description 3
- 239000008346 aqueous phase Substances 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000004151 fermentation Effects 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract description 2
- 238000005191 phase separation Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 37
- 235000019198 oils Nutrition 0.000 description 37
- 238000005516 engineering process Methods 0.000 description 7
- 238000004064 recycling Methods 0.000 description 6
- 235000019476 oil-water mixture Nutrition 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 239000013505 freshwater Substances 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003225 biodiesel Substances 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009996 mechanical pre-treatment Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Classifications
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- 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
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
- B09B3/45—Steam treatment, e.g. supercritical water gasification or oxidation
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
A method for the cooperative treatment of kitchen waste, household garbage and sludge of a sewage plant comprises the steps of carrying out household garbage incineration on solid-phase materials obtained after solid-liquid separation of the kitchen waste, and incinerating the solid-phase materials of the kitchen waste and the household garbage together to generate power; selectively mixing oil-water mixed liquor obtained after solid-liquid separation of the kitchen waste with sludge, effectively controlling the heat value and the fluidity of the sludge mixture, and ensuring smooth drying and incineration of the sludge; the heat value of the sludge is improved, the consumption of sludge drying incineration natural gas can be saved, and the energy-saving effect is achieved; simultaneously, solve the problem that kitchen and domestic waste mixed fermentation grease leads to the leachate membrane to block up, moreover, the aqueous phase biodegradability behind the kitchen garbage liquid phase separation grease is good, is favorable to carrying out the coprocessing with domestic waste's leachate. The oil-water mixed liquid separated from the kitchen waste by the solid-liquid separation device is dried and combusted after being mixed with sludge, anaerobic fermentation treatment is not needed, and water resources are effectively saved.
Description
Technical Field
The invention relates to a solid waste treatment method, in particular to a method for cooperatively treating kitchen waste, household waste and sludge in a sewage plant.
Background
At present, with the implementation of Chinese waste classification, classified municipal solid wastes such as municipal solid wastes, kitchen wastes, municipal sludge and the like are main wastes to be treated, but the construction speed of treatment facilities for various municipal solid wastes cannot keep up with the increase speed of the solid wastes at present, and illegal phenomena of enclosing the solid wastes or illegal disposal of the solid wastes can be caused. The construction of waste incineration facilities, kitchen waste treatment facilities and sludge incineration facilities can not fall to the ground due to the existence of the 'proximity effect'. The following are main treatment technologies of household garbage, kitchen garbage and municipal sludge:
(1) the main treatment technology of the domestic garbage comprises sanitary landfill and incineration treatment, the incineration treatment can realize the reduction of the domestic garbage, the weight reduction rate reaches 80-90%, the volume reduction rate reaches more than 90%, and the domestic garbage is widely popularized in domestic and foreign cities and is a mature technology.
(2) The main treatment mode of the kitchen waste comprises the steps of producing biogas gas through anaerobic treatment after mechanical pretreatment and sorting, burying or burning biogas residues, treating biogas slurry generated through anaerobic treatment and discharging into a municipal pipe network for further treatment, generating electricity or supplying heat for utilization of biogas, purifying grease in the kitchen waste through an oil-water separator after pretreatment, and preparing biodiesel by selling purified crude oil or further purifying the purified crude oil. In the kitchen waste treatment process, fresh water is additionally consumed for anaerobic treatment, and basically 1 ton of fresh water is consumed for 1 ton of kitchen waste.
(3) The municipal sludge treatment technology mainly adopts plate-and-frame dehydration, drying or incineration; the plate frame dehydration can reduce the water content of the sludge to 60 percent; the drying incineration treatment can realize the final reduction of the sludge, the reduction rate reaches more than 90%, the reduction effect is the best, the technology is popularized and applied abroad, and the application of the technology at present is less at home.
Chinese patent publication No. CN104668270B discloses a method for co-processing municipal solid waste. The method comprises the following steps: firstly, pretreating kitchen waste, and naturally settling, breaking bags and screening to obtain oversize products; and drying sludge from a sewage plant to obtain dried sludge, and mixing the oversize product and the dried sludge into household garbage for stirring, draining and then burning.
Chinese patent publication No. CN105798050B discloses a kitchen waste and domestic waste incineration power generation cooperative processing technology, which discloses that after kitchen waste is sorted, solid materials and liquid materials are respectively processed, the solid materials are conveyed to a domestic waste incineration power plant for combustion power generation, the liquid materials are subjected to oil-water separation processing, and the collected water phase is subjected to anaerobic fermentation.
The problem is that the drying incineration is unstable due to the unstable moisture content of the sludge from the sewage plant; the oil and water content of the oil-water mixed phase generated by the kitchen waste passing through the solid-liquid separation device is unstable; moreover, anaerobic fermentation requires a large amount of fresh water, which wastes water resources; meanwhile, the kitchen waste and the household waste are mixed, fermented and incinerated, and grease is mixed in the leachate, so that the leachate treatment system is easy to lose effectiveness; in addition, municipal sludge has a low calorific value, cannot be combusted by self-sustaining after being treated by a drying and burning method, needs an additional natural gas heat source and consumes relatively more energy.
Disclosure of Invention
In order to solve the technical problem that the existing kitchen waste, household waste and sludge of a sewage plant cannot be well co-treated, the invention provides a method for co-treating the kitchen waste, the household waste and the sludge of the sewage plant, wherein a solid-phase material obtained after solid-liquid separation of the kitchen waste is subjected to a household waste incineration step, so that the solid-phase material of the kitchen waste and the household waste are incinerated together to generate power; meanwhile, oil-water mixed liquor obtained after solid-liquid separation of the kitchen waste is selectively mixed with municipal sludge from a sewage treatment plant, so that the heat value and the fluidity of the sludge mixture are effectively controlled, and smooth drying incineration of the sludge is ensured; moreover, the oil-water mixed liquid separated from the kitchen waste by the solid-liquid separation device is subjected to drying combustion treatment after being mixed with sludge, anaerobic fermentation treatment is not needed, and water resources are effectively saved.
The technical scheme adopted by the invention for solving the technical problems is that the method for cooperatively treating the kitchen waste, the household waste and the sludge of the sewage plant comprises a household waste treatment step, a kitchen waste treatment step and a sludge treatment step, wherein the household waste treatment step comprises an incineration step and a leachate treatment step,
the household garbage incineration step comprises:
1. the domestic garbage enters a domestic garbage storage pit (step G),
2. after the domestic garbage is fermented in the storage pit for 3-5 days, the domestic garbage is sent into a garbage incinerator for incineration and power generation (step D),
3. the smoke generated by incineration is passed through a waste incineration smoke purification process system to remove secondary pollutants (step E),
4. the smoke is discharged after reaching the standard (step F),
the kitchen waste treatment step comprises:
1. transporting the kitchen waste to a kitchen waste receiving and storing device (step A),
2. enters a kitchen waste solid-liquid separation device through a spiral conveying device (step B), carries out solid-liquid separation on the kitchen waste,
3. carrying out synergistic treatment with the household garbage incineration, and carrying out the household garbage incineration step (step C) on the separated solid-phase material; the separated oil-water mixed liquid is subjected to an oil-water separation step,
the leachate treatment step comprises: the leachate in the garbage storage pit enters a leachate treatment system for purification treatment (step L) after being pretreated, the leachate is discharged into a municipal pipe network (step N) after being treated or the treated reclaimed water is reused as process water such as circulating cooling water of a garbage power generation system (step M),
further comprising a steam heating step, the steam heating step comprising: part of steam (0.5-1.0MPa, 100-,
the method is characterized in that: the sludge treatment step includes that municipal sludge from a sewage treatment plant is transported to a sludge storage pit of a sludge incineration plant (step P), the sludge storage pit and the oil-water separation step in the kitchen waste treatment step are subjected to cooperative treatment, oil-water mixed liquid (step I) after the solid-liquid separation device or grease (step J) from an oil-water separator are directly mixed, the mixture enters a sludge transportation device (step Q), and then enters a drying incineration device to be subjected to drying incineration treatment (step R), flue gas generated by incineration is subjected to removal of secondary pollutants through a sludge incineration flue gas purification device (step S), and the treated flue gas is discharged up to the standard (step T).
In a preferred embodiment of the present invention, the oil-water separation step includes: after the kitchen waste is subjected to solid-liquid separation, after oil-water mixed liquid is subjected to oil-water separation through an oil-water separator, a leachate treatment step is performed on water, and a sludge treatment step is performed after an oil phase enters a sludge storage pit and is mixed with sludge. The oil phase is the water phase after the oil-water mixture is subjected to oil-water separation, and the oil phase is the oil phase (not yet entering the purification stage).
The preferable scheme of the invention is that when the water content of municipal sludge from a sewage plant is more than 60%, the municipal sludge needs to be mixed with oil phase generated by oil-water separation (step J), thereby reducing the loss of latent heat of gasification in sludge incineration, increasing the calorific value of a sludge mixed phase and improving the stability of sludge incineration.
The preferable scheme of the invention is that after the municipal sludge is independently mixed with the oil phase (step J), the sludge still has lower heat value and can not be self-sustained combustion, and the waste activated carbon of the deodorization system of the waste incineration plant can be mixed with the sludge (step V), thereby improving the drying and dehydration performance of the sludge, improving the heat value of the mixed sludge and realizing the recycling of the waste activated carbon.
The preferable scheme of the invention is that when the water content of municipal sludge from a sewage plant in a sludge incineration plant is less than 60 percent (for example, a plate-and-frame dehydration process and the like is adopted), the municipal sludge is mixed with oil-water mixed liquid generated by solid-liquid separation (step I), so that the fluidity of the sludge is increased, the sealed conveying in the sludge drying and incineration process is facilitated, meanwhile, the heat value of the sludge can be improved, and the incineration disposal is facilitated.
The invention has the preferred scheme that when the water content of the oil-water mixed liquid is too high and the municipal sludge amount is less, the oil-water mixed liquid and the oil phase can be simultaneously mixed with the sludge for treatment in order to improve the stability and the combustion self-sustaining property of the sludge incineration.
The preferable scheme of the invention is that the method further comprises a step of refining and recycling the oil, and the step of refining and recycling the oil comprises the following steps: and after the oil-water separation, the oil phase enters an oil extractor for oil purification.
The preferable scheme of the invention is that when the oil phase of the oil-water mixed liquid (step I) from the solid-liquid separation device and the oil phase of the oil-water separator (step J) are more than the matching requirement of sludge mixing, or the sludge drying incineration device is shut down for maintenance, the oil phase is subjected to the oil refining and recycling step.
The preferable scheme of the invention is that the method also comprises a step of refining and recycling the kitchen waste oil, and the step of refining and recycling the kitchen waste oil comprises the following steps: and (4) purifying the grease by feeding the kitchen waste oil into an oil extractor.
The invention has the beneficial effects that: the invention provides a method for cooperatively treating kitchen waste, household garbage and sludge of a sewage plant, which comprises the following steps of firstly, carrying out household garbage incineration on solid-phase materials after the solid-liquid separation of the kitchen waste, and incinerating the solid-phase materials of the kitchen waste and the household garbage together for power generation; secondly, selectively mixing oil-water mixed liquor obtained after solid-liquid separation of the kitchen waste with municipal sludge from a sewage treatment plant, thereby effectively controlling the heat value and the fluidity of a sludge mixture, ensuring smooth drying incineration of the sludge, improving the heat value of the sludge, saving the consumption of natural gas for drying incineration of the sludge and achieving the effect of saving energy; thirdly, the oil-water mixed liquid separated from the kitchen waste by the solid-liquid separation device is subjected to drying combustion treatment after being mixed with sludge, anaerobic fermentation treatment is not needed, and water resources are effectively saved.
Drawings
FIG. 1 is a process flow diagram of one embodiment of the present invention.
Detailed Description
FIG. 1 is a process flow diagram of one embodiment of the present invention. In the figure, the method for the synergistic treatment of the kitchen waste, the household waste and the sludge of the sewage plant comprises a household waste treatment step, a kitchen waste treatment step and a sludge treatment step, wherein the household waste treatment step comprises an incineration step and a leachate treatment step,
the household garbage incineration step comprises:
1. the domestic garbage enters a domestic garbage storage pit (step G),
2. after the domestic garbage is fermented in the storage pit for 3-5 days, the domestic garbage is sent into a garbage incinerator for incineration and power generation (step D),
3. the smoke generated by incineration is passed through a waste incineration smoke purification process system to remove secondary pollutants (step E),
4. and (F) discharging the flue gas after reaching the standard.
The kitchen waste treatment step comprises:
1. transporting the kitchen waste to a kitchen waste receiving and storing device (step A),
2. enters a kitchen waste solid-liquid separation device through a spiral conveying device (step B), carries out solid-liquid separation on the kitchen waste,
3. carrying out synergistic treatment with the household garbage incineration, and carrying out the household garbage incineration step (step C) on the separated solid-phase material; the separated oil-water mixed liquid is subjected to an oil-water separation step,
the leachate treatment step comprises: the leachate in the garbage storage pit enters a leachate treatment system for purification treatment (step L) after being pretreated, the leachate is discharged into a municipal pipe network (step N) after being treated or the treated reclaimed water is reused as process water such as circulating cooling water of a garbage power generation system (step M),
further comprising a steam heating step, the steam heating step comprising: part of steam (0.5-1.0MPa, 100-,
in this example, the sludge treatment step includes that municipal sludge from a sewage treatment plant is transported to a sludge storage pit of a sludge incineration plant (step P), and is subjected to cooperative treatment with the oil-water separation step in the kitchen waste treatment step, oil-water mixed liquid (step I) from a solid-liquid separation device or grease (step J) from an oil-water separator is directly mixed, the mixture enters a sludge transport device (step Q), and then enters a drying incineration device for drying incineration treatment (step R), flue gas generated by incineration is subjected to secondary pollutant removal (step S) through a sludge incineration flue gas purification device, and is discharged after reaching the standard (step T),
in this embodiment, the oil-water separation step includes: after the kitchen waste is subjected to solid-liquid separation, after oil-water mixed liquid is subjected to oil-water separation through an oil-water separator, a leachate treatment step is performed on water, and a sludge treatment step is performed after an oil phase enters a sludge storage pit and is mixed with sludge. The problem of kitchen and domestic waste mixed fermentation grease lead to filtration liquid membrane to block up is solved, realizes through reposition of redundant personnel kitchen garbage liquid phase grease (oil-water mixture phase or crude oil), and the aqueous phase biodegradability behind the kitchen garbage liquid phase separation grease is good, is favorable to carrying out the coprocessing with domestic waste's filtration liquid.
In the embodiment, when the water content of municipal sludge from a sewage plant in a sludge incineration plant is more than 60%, the municipal sludge needs to be mixed with oil phase generated by oil-water separation (step J), so that the loss of latent heat of gasification in sludge incineration is reduced, the calorific value of a sludge mixed phase is increased, and the stability of sludge incineration is improved;
in the embodiment, when the municipal sludge has large water content and is independently mixed with the oil phase (step J), the sludge still has low heat value and can not be combusted by self, waste activated carbon of a deodorization system of a waste incineration plant can be mixed with the sludge (step V), the drying dehydration performance of the sludge is improved, the heat value of the mixed sludge is improved, and the cyclic utilization of the waste activated carbon is realized.
In the embodiment, when the water content of municipal sludge from a sewage plant in a sludge incineration plant is less than 60% (for example, by adopting processes such as plate-and-frame dehydration), the municipal sludge is mixed with oil-water mixed liquid generated by solid-liquid separation (step I), so that the fluidity of the sludge is increased, the sealed conveying in the sludge drying and incineration process is facilitated, the heat value of the sludge can be improved, and the incineration disposal is facilitated.
In this example, when the water content of the oil-water mixture is too high and the amount of municipal sludge is small, the oil-water mixture and the oil phase may be mixed with the sludge at the same time to improve the stability and combustion self-sustaining property of the sludge incineration.
In this example, the method further includes a step of refining and recovering the oil, and the step of refining and recovering the oil includes: and after the oil-water separation, the oil phase enters an oil extractor for oil purification.
In this example, when the oil phase from the oil-water mixture (step I) and the oil phase from the oil-water separator (step J) of the solid-liquid separator are more than the matching requirement of sludge mixing, or when the sludge drying incinerator is shut down for maintenance, the oil phase is subjected to a grease refining and recovering step.
In this example, still include that kitchen waste oil refines the recovery step, kitchen waste oil refines the recovery step and includes: and (4) purifying the grease by feeding the kitchen waste oil into an oil extractor.
The invention prompts that in order to avoid newly-increased investment construction of newly-built kitchen waste treatment plants and improve the system treatment efficiency of the kitchen waste and household waste incineration treatment, the kitchen waste receiving and storing device, the kitchen waste solid-liquid separation device and the kitchen waste liquid-phase oil-water separation device can be built together with a waste incineration plant and are arranged at the positions of a discharge platform and the like of the waste incineration plant, the generated solid phase is directly incinerated together with the household waste, and a waste storage pit and a subsequent treatment device are shared with a household waste incineration power generation facility, so that the construction of a subsequent anaerobic facility is avoided.
Claims (9)
1. A method for the synergistic treatment of kitchen waste, household waste and sludge of sewage plants comprises a household waste treatment step, a kitchen waste treatment step and a sludge treatment step, wherein the household waste treatment step comprises an incineration step and a leachate treatment step,
the household garbage incineration step comprises:
1. the domestic garbage enters a domestic garbage storage pit (step G),
2. after the domestic garbage is fermented in the storage pit for 3-5 days, the domestic garbage is sent into a garbage incinerator for incineration and power generation (step D),
3. the smoke generated by incineration is passed through a waste incineration smoke purification process system to remove secondary pollutants (step E),
4. the smoke is discharged after reaching the standard (step F),
the kitchen waste treatment step comprises:
1. transporting the kitchen waste to a kitchen waste receiving and storing device (step A),
2. enters a kitchen waste solid-liquid separation device through a spiral conveying device (step B), carries out solid-liquid separation on the kitchen waste,
3. carrying out synergistic treatment with the household garbage incineration, and carrying out the household garbage incineration step (step C) on the separated solid-phase material; the separated oil-water mixed liquid is subjected to an oil-water separation step,
the leachate treatment step comprises: the leachate in the garbage storage pit enters a leachate treatment system for purification treatment (step L) after being pretreated, the leachate is discharged into a municipal pipe network (step N) after being treated or the treated reclaimed water is reused as process water such as circulating cooling water of a garbage power generation system (step M),
further comprising a steam heating step, the steam heating step comprising: part of steam generated by the garbage power generation device is connected into a solid-liquid separation device in the kitchen waste treatment step, the solid-liquid separation process is directly or indirectly heated (step U),
the method is characterized in that: the sludge treatment step includes that municipal sludge from a sewage treatment plant is transported to a sludge storage pit of a sludge incineration plant (step P), the sludge storage pit and the oil-water separation step in the kitchen waste treatment step are subjected to cooperative treatment, oil-water mixed liquid (step I) after the solid-liquid separation device or grease (step J) from an oil-water separator are directly mixed, the mixture enters a sludge transportation device (step Q), and then enters a drying incineration device to be subjected to drying incineration treatment (step R), flue gas generated by incineration is subjected to removal of secondary pollutants through a sludge incineration flue gas purification device (step S), and the treated flue gas is discharged up to the standard (step T).
2. The method for the cooperative treatment of the kitchen waste, the household waste and the sludge of the sewage plant according to claim 1, which is characterized in that: the oil-water separation step comprises: after the kitchen waste is subjected to solid-liquid separation, after oil-water mixed liquid is subjected to oil-water separation through an oil-water separator, a leachate treatment step is performed on water, and a sludge treatment step is performed after an oil phase enters a sludge storage pit and is mixed with sludge.
3. The method for the cooperative treatment of the kitchen waste, the household waste and the sludge of the sewage plant according to claim 2, which is characterized in that: when the water content of municipal sludge from a sewage plant is more than 60%, the municipal sludge needs to be mixed with an oil phase generated by oil-water separation (step J), so that the loss of latent heat of sludge incineration gasification is reduced, the heat value of a sludge mixed phase is increased, and the sludge incineration stability is improved.
4. The method for the cooperative treatment of the kitchen waste, the household waste and the sludge of the sewage plant according to claim 3, which is characterized in that: after the municipal sludge is independently mixed with the oil phase (step J), the sludge still has a low heat value and can not be combusted by self, waste activated carbon of a deodorization system of a waste incineration plant can be mixed with the sludge (step V), the drying dehydration performance of the sludge is improved, the heat value of the mixed sludge is improved, and the cyclic utilization of the waste activated carbon is realized.
5. The method for the cooperative treatment of the kitchen waste, the household waste and the sludge of the sewage plant according to claim 1, which is characterized in that: when the water content of municipal sludge from a sewage plant in a sludge incineration plant is less than 60%, the sludge is mixed with oil-water mixed liquid generated by solid-liquid separation (step I), so that the fluidity of the sludge is increased, the sealed conveying in the sludge drying and incineration process is facilitated, meanwhile, the heat value of the sludge can be improved, and the incineration disposal is facilitated.
6. The method for the cooperative treatment of the kitchen waste, the household waste and the sludge of the sewage plant according to claim 1, which is characterized in that: when the water content of the oil-water mixed liquid is too high and the municipal sludge amount is less, in order to improve the stability and combustion self-sustaining property of sludge incineration, the oil-water mixed liquid and the oil phase can be simultaneously mixed with the sludge for treatment.
7. The method for the cooperative treatment of the kitchen waste, the household waste and the sludge of the sewage plant according to claim 1, which is characterized in that: still include the grease and refine the recovery step, the grease refines the recovery step and includes: and after the oil-water separation, the oil phase enters an oil extractor for oil purification.
8. The method for the cooperative treatment of the kitchen waste, the household waste and the sludge of the sewage plant according to claim 1, which is characterized in that: and (4) when the oil phase of the oil-water mixed liquid (step I) from the solid-liquid separation device and the oil phase of the oil-water separator (step J) are more than the matching requirement of sludge mixing, or when the sludge drying incineration device is shut down for maintenance, carrying out oil refining and recovering on the oil phase.
9. The method for the cooperative treatment of the kitchen waste, the household waste and the sludge of the sewage plant according to claim 1, which is characterized in that: still refine the recovery step including kitchen waste oil, kitchen waste oil refines the recovery step and includes: and (4) purifying the grease by feeding the kitchen waste oil into an oil extractor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911134638.3A CN111036643A (en) | 2019-11-19 | 2019-11-19 | Method for cooperatively treating kitchen waste, household garbage and sludge of sewage plant |
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| CN201911134638.3A CN111036643A (en) | 2019-11-19 | 2019-11-19 | Method for cooperatively treating kitchen waste, household garbage and sludge of sewage plant |
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| CN111036643A true CN111036643A (en) | 2020-04-21 |
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| CN201911134638.3A Pending CN111036643A (en) | 2019-11-19 | 2019-11-19 | Method for cooperatively treating kitchen waste, household garbage and sludge of sewage plant |
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| CN (1) | CN111036643A (en) |
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| CN111957719A (en) * | 2020-08-11 | 2020-11-20 | 潮州深能环保有限公司 | System and method for cooperatively treating kitchen waste by waste incineration plant |
| CN112159823A (en) * | 2020-09-11 | 2021-01-01 | 重庆大学 | Self-balancing fermentation incineration treatment organic solid waste technology and process |
| CN112222144A (en) * | 2020-09-15 | 2021-01-15 | 宁夏中科国通新能源有限公司 | Kitchen waste treatment system and technology |
| CN112628740A (en) * | 2020-12-21 | 2021-04-09 | 常熟浦发第二热电能源有限公司 | Wet garbage decrement incineration treatment process |
| CN112626129A (en) * | 2021-01-05 | 2021-04-09 | 深圳茂元环保科技有限公司 | Anaerobic fermentation acidification control method for organic garbage |
| CN112676298A (en) * | 2020-11-13 | 2021-04-20 | 广东省建筑设计研究院有限公司 | Cooperative treatment system and method for kitchen garbage, municipal sludge and excrement |
| CN113587114A (en) * | 2021-07-30 | 2021-11-02 | 北京工商大学 | High-water-content oil sludge clean combustion treatment device |
| CN113877936A (en) * | 2021-10-08 | 2022-01-04 | 国投信开水环境投资有限公司 | Kitchen waste and municipal sewage combined treatment process |
| CN113896380A (en) * | 2021-11-15 | 2022-01-07 | 美都生态环境科技(天津)有限公司 | Urban garbage leakage liquid treatment process |
| WO2022032474A1 (en) * | 2020-08-11 | 2022-02-17 | 潮州深能环保有限公司 | System and method for cooperative treatment of kitchen waste in waste incineration plant |
| WO2022032481A1 (en) * | 2020-08-11 | 2022-02-17 | 桂林市深能环保有限公司 | System and method for cooperatively treating kitchen waste in garbage incineration plant |
| CN114484439A (en) * | 2022-01-17 | 2022-05-13 | 中国电建集团西北勘测设计研究院有限公司 | Kitchen waste and household waste collaborative pyrolysis treatment system and method |
| CN115090658A (en) * | 2022-06-27 | 2022-09-23 | 北京金隅红树林环保技术有限责任公司 | Method for treating kitchen waste, kitchen waste and domestic sludge by virtue of cooperation of cement kiln and drying |
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| WO2022032474A1 (en) * | 2020-08-11 | 2022-02-17 | 潮州深能环保有限公司 | System and method for cooperative treatment of kitchen waste in waste incineration plant |
| CN111957719A (en) * | 2020-08-11 | 2020-11-20 | 潮州深能环保有限公司 | System and method for cooperatively treating kitchen waste by waste incineration plant |
| CN111957719B (en) * | 2020-08-11 | 2023-02-21 | 潮州深能环保有限公司 | System and method for cooperatively treating kitchen waste by waste incineration plant |
| WO2022032481A1 (en) * | 2020-08-11 | 2022-02-17 | 桂林市深能环保有限公司 | System and method for cooperatively treating kitchen waste in garbage incineration plant |
| CN112159823A (en) * | 2020-09-11 | 2021-01-01 | 重庆大学 | Self-balancing fermentation incineration treatment organic solid waste technology and process |
| CN112222144A (en) * | 2020-09-15 | 2021-01-15 | 宁夏中科国通新能源有限公司 | Kitchen waste treatment system and technology |
| CN112676298A (en) * | 2020-11-13 | 2021-04-20 | 广东省建筑设计研究院有限公司 | Cooperative treatment system and method for kitchen garbage, municipal sludge and excrement |
| CN112628740A (en) * | 2020-12-21 | 2021-04-09 | 常熟浦发第二热电能源有限公司 | Wet garbage decrement incineration treatment process |
| CN112626129A (en) * | 2021-01-05 | 2021-04-09 | 深圳茂元环保科技有限公司 | Anaerobic fermentation acidification control method for organic garbage |
| CN113587114A (en) * | 2021-07-30 | 2021-11-02 | 北京工商大学 | High-water-content oil sludge clean combustion treatment device |
| CN113877936A (en) * | 2021-10-08 | 2022-01-04 | 国投信开水环境投资有限公司 | Kitchen waste and municipal sewage combined treatment process |
| CN113896380A (en) * | 2021-11-15 | 2022-01-07 | 美都生态环境科技(天津)有限公司 | Urban garbage leakage liquid treatment process |
| CN113896380B (en) * | 2021-11-15 | 2023-09-05 | 美都生态环境科技(天津)有限公司 | Urban garbage leakage liquid treatment process |
| CN114484439A (en) * | 2022-01-17 | 2022-05-13 | 中国电建集团西北勘测设计研究院有限公司 | Kitchen waste and household waste collaborative pyrolysis treatment system and method |
| CN115090658A (en) * | 2022-06-27 | 2022-09-23 | 北京金隅红树林环保技术有限责任公司 | Method for treating kitchen waste, kitchen waste and domestic sludge by virtue of cooperation of cement kiln and drying |
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