WO2022032481A1 - 一种垃圾焚烧厂协同处理餐厨废弃物的系统及方法 - Google Patents

一种垃圾焚烧厂协同处理餐厨废弃物的系统及方法 Download PDF

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WO2022032481A1
WO2022032481A1 PCT/CN2020/108457 CN2020108457W WO2022032481A1 WO 2022032481 A1 WO2022032481 A1 WO 2022032481A1 CN 2020108457 W CN2020108457 W CN 2020108457W WO 2022032481 A1 WO2022032481 A1 WO 2022032481A1
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garbage
waste
treatment
waste water
phase separation
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PCT/CN2020/108457
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English (en)
French (fr)
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吴浩
谭巍
钟日钢
黄俊宾
王凯
沈竑
魏强
李倬舸
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桂林市深能环保有限公司
潮州深能环保有限公司
深圳市能源环保有限公司
深圳市深能环保东部有限公司
深圳市深能环保城市环境服务有限公司
武汉深能环保新沟垃圾发电有限公司
单县深能环保有限公司
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Application filed by 桂林市深能环保有限公司, 潮州深能环保有限公司, 深圳市能源环保有限公司, 深圳市深能环保东部有限公司, 深圳市深能环保城市环境服务有限公司, 武汉深能环保新沟垃圾发电有限公司, 单县深能环保有限公司 filed Critical 桂林市深能环保有限公司
Priority to PCT/CN2020/108457 priority Critical patent/WO2022032481A1/zh
Publication of WO2022032481A1 publication Critical patent/WO2022032481A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat

Definitions

  • the invention relates to a method for solid waste treatment, in particular to a system and method for co-processing kitchen waste in a waste incineration plant.
  • Kitchen waste refers to the food residues of restaurants, restaurants, unit canteens, etc., as well as the processing wastes of fruits and vegetables, meat, oils, and pastries in the back kitchen, and also includes household kitchen wastes.
  • Kitchen waste has a high moisture content, usually more than 80%; many nutrients, rich in starch, cellulose, protein, fat and inorganic salts, etc.; high oil content, usually more than 2% of the weight of kitchen waste. Due to the high oil content, biological treatment of kitchen waste will have an inhibitory effect and increase the difficulty of treatment.
  • the main process of domestic kitchen waste treatment is the process of "pretreatment + oil extraction + anaerobic treatment + biogas utilization".
  • a single kitchen waste treatment facility currently has problems in the treatment of biogas residue and biogas slurry, and the investment cost of anaerobic facilities It is difficult to operate stably due to high standards, which makes it difficult for many domestic kitchen treatment facilities to achieve high standards of harmless and reduction treatment, the degree of resource utilization is not high, and the economy is poor.
  • each cubic meter of biogas after purification can generate about 2 kWh of electricity, so the power generation per ton of kitchen waste is about 150-200 kWh, which is about 150-200 kWh per ton of waste incineration.
  • waste-to-energy output of more than 400 degrees is relatively low, but the investment cost per ton is comparable to that of waste incineration.
  • domestic waste incineration manufacturers have begun to consider building kitchen pretreatment facilities in waste incineration plants to conduct co-processing of domestic waste and kitchen waste, and improve the reduction, harmlessness and recycling of kitchen waste. to reduce processing costs.
  • a typical example is the patent "A Systematic Treatment Method for Kitchen Waste” (Application No. 201110238849.9), which proposes a method of "pretreatment, conditioning pulping, anaerobic fermentation, biogas utilization and biogas residue treatment", in which pretreatment and anaerobic treatment
  • pretreatment and anaerobic treatment The generated solid-phase debris enters the incineration plant for co-processing, and the waste heat from the waste incineration plant is used as the heat source for anaerobic fermentation, and the wastewater is discharged through anaerobic treatment and biological treatment.
  • the patent "A method for a domestic waste incineration plant to synergize the full amount of kitchen waste” proposes a method of "solid-liquid separation + solid-phase incineration + liquid-phase synergy", in which the solid-liquid separation system will produce solid It is sent to incineration or into the oil system, and the oil is recovered in the liquid phase.
  • the patent “Urban and Rural Solid Waste Collaborative Integrated Treatment System Based on Waste Incineration Device” proposes a plan to dispose of various wastes including kitchen waste at the lower part of the unloading platform of the waste incineration plant. The disposal of waste, and the utilization of oils and fats have not been realized.
  • the patent “A system and method for co-processing food waste with waste-to-power generation” (application number 201811079743.7) also proposes the idea of "pretreatment + oil purification + solid phase incineration + liquid phase synergy”.
  • the main problem of the existing co-processing technology is that it does not take into account that the wastewater generated by the pretreatment of kitchen waste also has a high oil content, which cannot meet the water inflow requirements of the leachate treatment system of the waste incineration plant.
  • the synergistic treatment of wastewater and the leachate treatment system of the original waste incineration plant will have a large biological inhibition effect, which will affect the anaerobic system and subsequent biochemical system of the waste incineration plant, and will seriously cause the membrane treatment system to be blocked and unable to operate.
  • the invention proposes a system and method for co-processing kitchen waste in a waste incineration plant.
  • the solid slag produced by the leachate of the garbage pond after passing through the three-phase separation device enters the garbage pond and the wastewater is treated in two ways. According to the direction of the flow of the wastewater, in the first wastewater treatment, it is also processed in sequence before entering the garbage leachate treatment system.
  • a coagulation device and an air flotation device are provided; in the second-path wastewater treatment, a homogeneous emulsification device and a filtering and impurity removal device are also provided before the back-spraying device.
  • the system can mainly solve the problem of high grease in wastewater treatment in the process of co-processing of kitchen waste. At the same time, it takes into account the synergistic advantages of using waste-to-energy power plants to maximize the utilization of kitchen waste, minimize the amount of Harmless, reduce processing cost and realize economical operation.
  • the technical solution adopted by the present invention to solve the technical problem is: a system for cooperatively processing kitchen waste in a waste incineration plant, including a waste pool, a three-phase separation device, a waste incineration power generation system, and a waste leachate treatment system that plays a synergistic role and back-spraying device, kitchen waste and domestic waste enter the garbage pond, the leachate from the garbage pond passes through the three-phase separation device and the solid slag produced enters the garbage pond, and the waste water is treated in two ways.
  • the waste leachate treatment system is processed and the second waste water is sprayed back to the incinerator of the waste incineration power generation system through the back spray device.
  • Purification or sale it is characterized in that, according to the flow direction of waste water, in the first waste water treatment, a coagulation device and an air flotation device are also set up in sequence before entering the garbage leachate treatment system; in the second waste water treatment, in the A homogeneous emulsifying device and a filtering and impurity removing device are also set before the back spray device,
  • the waste incineration power generation system mainly includes a waste incinerator, a waste heat boiler, a steam turbine generator, and a flue gas purification system arranged after the waste incinerator and the waste heat boiler.
  • a processing method for co-processing kitchen waste in a waste incineration plant further comprising the following steps:
  • the leachate produced by the garbage pond enters the three-phase separation device for solid, water and oil separation.
  • the solid slag produced by the three-phase separation enters the garbage pond, and the waste water produced by the three-phase separation is processed in two ways.
  • the first waste water is processed by the garbage leachate treatment system. After being processed by the garbage leachate treatment system Reuse or discharge up to the standard; while the second waste water is sprayed back to the incinerator of the waste incineration power generation system through the back spray device, and the crude oil produced by the three-phase separation is further purified or sold,
  • the first waste water enters the garbage leachate treatment system after coagulation treatment and air flotation treatment in turn, and the solid slag and scum generated after coagulation treatment and air flotation treatment enter the garbage respectively.
  • the second-pass wastewater enters the back-spraying device after being subjected to homogeneous emulsification treatment and filtration and impurity removal treatment in sequence.
  • the present invention provides a system and method for co-processing kitchen waste in a waste incineration plant.
  • the solid slag produced by the leachate of the garbage pond after passing through the three-phase separation device enters the garbage pond and the waste water is treated in two ways.
  • the waste water is treated in sequence before entering the garbage leachate treatment system.
  • a coagulation device and an air flotation device are provided; in the second-path wastewater treatment, a homogeneous emulsification device and a filtering and impurity removal device are also provided before the back-spraying device.
  • the system can mainly solve the problem of high grease in wastewater treatment in the process of co-processing of kitchen waste. At the same time, it takes into account the synergistic advantages of using waste-to-energy power plants to maximize the utilization of kitchen waste, minimize the amount, Harmless, reduce processing cost and realize economical operation.
  • FIG. 1 and FIG. 2 are a system layout diagram and a corresponding process flow diagram of the first embodiment proposed by the present invention, respectively.
  • FIG. 1 and FIG. 2 are a system layout diagram and a corresponding process flow diagram of the first embodiment proposed by the present invention, respectively.
  • a system for co-processing kitchen waste in a waste incineration plant includes a waste pond, a three-phase separation device, a waste incineration power generation system, and a waste leachate treatment system and a recycling system that play a synergistic role.
  • Spray device, kitchen waste and domestic waste enter the garbage pond, the leachate from the garbage pond passes through the three-phase separation device and the solid slag produced enters the garbage pond, and the waste water is treated in two ways.
  • the waste leachate treatment system is processed, and the second route of kitchen waste water is sprayed back to the incinerator of the waste incineration power generation system through the back spray device, and the crude grease produced by the kitchen waste after passing through the kitchen waste pretreatment system Further purification or sale, it is characterized in that, according to the flow direction of wastewater, in the first wastewater treatment, a coagulation device and an air flotation device are also set up in sequence before entering the garbage leachate treatment system; in the second wastewater treatment, A homogeneous emulsification device and a filter and impurity removal device are also set before the back spray device,
  • the waste incineration power generation system mainly includes a waste incinerator, a waste heat boiler, a steam turbine generator, and a flue gas purification system arranged after the waste incinerator and the waste heat boiler.
  • a method for co-processing kitchen waste in a waste incineration plant further includes the following steps:
  • garbage incinerator After the garbage is fermented in the garbage pond for 3-5 days, it is sent to the garbage incinerator for incineration and then drives the steam turbine generator to generate electricity.
  • the flue gas generated after the incineration of the garbage incinerator enters the flue gas purification system. air purification,
  • the leachate produced by the garbage pond enters the three-phase separation device for solid, water and oil separation.
  • the solid slag produced by the three-phase separation enters the garbage tank, and the waste water produced by the three-phase separation is processed in two ways.
  • the first way of kitchen waste water is processed by the garbage leachate treatment system, and the waste leachate treatment system is processed by the garbage leachate treatment system. After treatment, it can be reused or discharged up to the standard; while the second-channel kitchen wastewater is sprayed back to the incinerator of the waste incineration power generation system through the back spray device, and the crude oil produced by the three-phase separation is further purified or sold.
  • the first waste water enters the garbage leachate treatment system through the coagulation device and the air flotation device in turn, and the solid slag generated after the coagulation device and the air flotation device enters the garbage incineration respectively.
  • the incinerator of the power generation system; the second waste water enters the back-spraying device after passing through the homogeneous emulsifying device and the filtering and removing impurity device in sequence.

Abstract

一种垃圾焚烧厂协同处理餐厨废弃物的系统及方法。系统包括垃圾池、三相分离装置、垃圾焚烧发电系统，还包括发挥协同作用的垃圾沥滤液处理系统和回喷装置，垃圾池的沥滤液经三相分离装置之后产生的固渣进入垃圾池而废水分两路进行处理，第一路废水由垃圾沥滤液处理系统进行处理而第二路废水通过回喷装置回喷到垃圾焚烧发电系统的焚烧炉，餐厨垃圾及生活垃圾经三相分离装置之后产生的粗油脂进一步提纯或出售，依据废水流动的方向，在第一路废水处理中，在进入垃圾沥滤液处理系统之前还依次设置混凝装置及气浮装置；在第二路废水处理中，在回喷装置之前还设置均质乳化装置和过滤除杂装置。该系统主要能够解决餐厨废弃物协同处理过程中的废水处理油脂较高的问题。

Description

一种垃圾焚烧厂协同处理餐厨废弃物的系统及方法 技术领域
本发明涉及一种固废处理的方法，尤其涉及一种垃圾焚烧厂协同处理餐厨废弃物的系统及方法。
背景技术
餐厨废弃物为餐馆、饭店、单位食堂等的饮食剩余物以及后厨的果蔬、肉食、油脂、面点等的加工过程废弃物，也包含家庭厨余废弃物。餐厨废弃物含水率高，通常达到80％以上；营养物质多，含有丰富的淀粉、纤维素、蛋白质、脂肪和无机盐等；油脂含量高，通常达到餐厨废弃物重量的2％以上。由于存在油脂含量高的特点，对餐厨废弃物进行生物处理会产生抑制作用，增加处理难度。
国内餐厨废弃物处理的主要工艺是“预处理+油脂提取+厌氧处理+沼气利用”工艺，单一的餐厨废弃物处理设施目前存在沼渣、沼液处理难题，并且厌氧设施投资成本高、难以稳定运行，导致目前国内很多餐厨处理设施难以达到高标准无害化、减量化处理，资源化程度也不高，经济性较差。以每吨餐厨废弃物可以制备沼气60-90m 3计算，每立方沼气提纯后进行发电可以产生约2度，故吨餐厨废弃物的发电量约150-200度左右，与垃圾焚烧发电吨垃圾发电量400度以上相比偏低，但吨投资成本与垃圾焚烧相当。为此，目前国内垃圾焚烧厂商已经开始考虑在垃圾焚烧厂内建设餐厨预处理设施，进行生活垃圾与餐厨垃圾的协同处理，提高餐厨废弃物减量化、无害化及资源化的程度，降低处理成本。
典型的如专利“一种餐厨垃圾的系统处理方法”(申请号201110238849.9)，提出“预处理、调节制浆、厌氧发酵、沼气利用和沼渣处理”的方法，其中预处理及厌氧产生的固相杂物进入焚烧厂协同处理，利用垃圾焚烧厂的废热作为厌氧发酵的热源，废水通过厌氧处理及生物处理达标排放。专利“一种生活垃圾焚烧厂协同全量处理餐厨垃圾的方法”(申请号201610675440.6)，提出“固液分离+固相焚烧+液相协同”的方法，其中固液分离系统，将产生的固体送入焚烧或进入油脂系统，液相回收油脂。专利“基于垃圾焚烧装置的城乡固废垃圾协同一体化处理系统”(专利号201910604511.7)，提出在垃圾焚烧厂卸料平台下部布置包含餐厨废弃物等多种废弃物处理的方案，对餐厨废弃物的处理，油脂没有实现资源化利用。专利“一种垃圾发电协同处理餐厨垃圾系统及方法”(申请号201811079743.7)，也提出“预处理+油脂提纯+固相焚烧+液相协同”处理的思路。
现有协同处理技术的主要问题是，没有考虑到餐厨废弃物经过预处理产生的废水还具有较高的油脂含量，达不到垃圾焚烧厂沥滤液处理系统的进水要求，此时预处理废水与原有垃圾焚烧厂沥滤液处理系统协同处理，会产生较大的生物抑制作用，导致垃圾焚烧厂的厌氧系统及后续生化系统产生影响，严重的会导致膜处理系统堵塞而无法运行。此外，现有的餐厨废弃物与垃圾焚烧厂协同处理工艺没有充分考虑垃圾焚烧厂红线范围内建设餐厨废弃物处理系统的可能性和复杂性，有可能因原垃圾焚烧厂没有足够的空间和建设用地布置餐厨废弃物预处理设施而难以实施。
发明内容
为解决现有单一餐厨废弃物处理设施无害化、减量化程度不高，经济性较差问题，以及现有垃圾焚烧协同处理餐厨废弃物处理工艺废水协同含油率较高等问题，本发明提出了一种垃圾焚烧厂协同处理餐厨废弃物的系统及方法。垃圾池的沥滤液经三相分离装置之后产生的固渣进入垃圾池而废水分两路进行处理，依据废水流动的方向，在第一路废水处理中，在进入垃圾沥滤液处理系统之前还依次设置混凝装置及气浮装置；在第二路废水处理中，在所述回喷装置之前还设置均质乳化装置和过滤除杂装置。该系统主要能够解决餐厨废弃物协同处理过程中的废水处理油脂较高的问题，同时考虑了利用垃圾发电厂的协同优势，最大限度实现餐厨废弃物资源化，最大程度的减量化、无害化，降低处理成本，实现经济运行。
本发明解决技术问题采用的技术方案是，一种垃圾焚烧厂协同处理餐厨废弃物的系统，包括垃圾池、三相分离装置、垃圾焚烧发电系统，还包括发挥协同作用的垃圾沥滤液处理系统和回喷装置，餐厨垃圾及生活垃圾进入垃圾池，垃圾池的沥滤液经所述三相分离装置之后产生的固渣进入垃圾池而废水分两路进行处理，第一路废水由所述垃圾沥滤液处理系统进行处理而第二路废水通过所述回喷装置回喷到所述垃圾焚烧发电系统的焚烧炉，餐厨垃圾及生活垃圾经所述三相分离装置之后产生的粗油脂进一步提纯或出售，其特征是，依据废水流动的方向，在第一路废水处理中，在进入垃圾沥滤液处理系统之前还依次设置混凝装置及气浮装置；在第二路废水处理中，在所述回喷装置之前还设置均质乳化装置和过滤除杂装置，
所述垃圾焚烧发电系统主要包括垃圾焚烧炉、余热锅炉、汽轮发电机及设置在垃圾焚烧炉、余热锅炉之后的烟气净化系统。
一种垃圾焚烧厂协同处理餐厨废弃物的处理方法，还包括以下步骤：
1.将餐厨垃圾及生活垃圾运输至同一个垃圾池，
2..垃圾在垃圾池中发酵处理3-5天后，被送入垃圾焚烧炉进行焚烧进而驱动所述汽轮机发电机发电，垃圾焚烧炉进行焚烧后产生的烟气进入所述烟气净化系统进行烟气净化，
3.垃圾池产生的沥滤液进入三相分离装置进行固、水、油分离，
4.三相分离产生的固渣进入垃圾池，三相分离产生的废水分两路进行处理，第一路废水由所述垃圾沥滤液处理系统进行处理，经所述垃圾沥滤液处理系统处理之后回用或达标排放；而第二路废水通过所述回喷装置回喷到所述垃圾焚烧发电系统的焚烧炉，而三相分离产生的粗油脂则进一步提纯或出售，
其特征是，在第4步骤之后，第一路废水依次经混凝处理及气浮处理之后进入垃圾沥滤液处理系统，经混凝处理及气浮处理之后产生的固渣及浮渣分别进入垃圾池；第二路废水依次经均质乳化处理及过滤除杂处理之后进入所述回喷装置。
本发明的有益效果：本发明提出了一种垃圾焚烧厂协同处理餐厨废弃物的系统及方法。垃圾池的沥滤液经三相分离装置之后产生的固渣进入垃圾池而废水分两路进行处理，依据废水流动的方向，在第一路废水处理中，在进入垃圾沥滤液处理系统之前还依次设置混凝装置及气浮装置；在第二路废水处理中，在所述回喷装置之前还设置均质乳化装置和过滤除杂装置。该系统主要能够解决餐厨废弃物协同处理过程中的 废水处理油脂较高的问题，同时考虑了利用垃圾发电厂的协同优势，最大限度实现餐厨废弃物资源化，最大程度的减量化、无害化，降低处理成本，实现经济运行。
附图说明
图1及图2分别为本发明提出的第一个实施例的系统布置图及其对应的工艺流程图。
具体实施方式
图1及图2分别为本发明提出的第一个实施例的系统布置图及其对应的工艺流程图。图1中显示，本例中，一种垃圾焚烧厂协同处理餐厨废弃物的系统，包括垃圾池、三相分离装置、垃圾焚烧发电系统，还包括发挥协同作用的垃圾沥滤液处理系统和回喷装置，餐厨垃圾及生活垃圾进入垃圾池，垃圾池的沥滤液经所述三相分离装置之后产生的固渣进入垃圾池而废水分两路进行处理，第一路餐厨废水由所述垃圾沥滤液处理系统进行处理而第二路餐厨废水通过所述回喷装置回喷到所述垃圾焚烧发电系统的焚烧炉，餐厨垃圾经所述餐厨垃圾预处理系统之后产生的粗油脂进一步提纯或出售，其特征是，依据废水流动的方向，在第一路废水处理中，在进入垃圾沥滤液处理系统之前还依次设置混凝装置及气浮装置；在第二路废水处理中，在所述回喷装置之前还设置均质乳化装置和过滤除杂装置，
所述垃圾焚烧发电系统主要包括垃圾焚烧炉、余热锅炉、汽轮发电机及设置在垃圾焚烧炉、余热锅炉之后的烟气净化系统。
图2中显示，一种垃圾焚烧厂协同处理餐厨废弃物的处理方法，还包括以下步骤：
1.将餐厨垃圾及生活垃圾运输至同一个垃圾池，
2.垃圾在垃圾池中发酵处理3-5天后，被送入垃圾焚烧炉进行焚烧进而驱动所述汽轮机发电机发电，垃圾焚烧炉进行焚烧后产生的烟气进入所述烟气净化系统进行烟气净化，
3.垃圾池产生的沥滤液进入三相分离装置进行固、水、油分离，
4.三相分离产生的固渣进入垃圾池，三相分离产生的废水分两路进行处理，第一路餐厨废水由所述垃圾沥滤液处理系统进行处理，经所述垃圾沥滤液处理系统处理之后回用或达标排放；而第二路餐厨废水通过所述回喷装置回喷到所述垃圾焚烧发电系统的焚烧炉，而三相分离产生的粗油脂则进一步提纯或出售，
其特征是，在第4步骤之后，第一路废水依次经所述混凝装置及气浮装置之后进入垃圾沥滤液处理系统，经混凝装置及气浮装置之后产生的固渣分别进入垃圾焚烧发电系统的焚烧炉；第二路废水依次经所述均质乳化装置及过滤除杂装置之后进入所述回喷装置。

Claims (2)

  1. 一种垃圾焚烧厂协同处理餐厨废弃物的系统，包括垃圾池、三相分离装置、垃圾焚烧发电系统，还包括发挥协同作用的垃圾沥滤液处理系统和回喷装置，餐厨垃圾及生活垃圾进入垃圾池，垃圾池的沥滤液经所述三相分离装置之后产生的固渣进入垃圾池而废水分两路进行处理，第一路废水由所述垃圾沥滤液处理系统进行处理而第二路废水通过所述回喷装置回喷到所述垃圾焚烧发电系统的焚烧炉，餐厨垃圾及生活垃圾经所述三相分离装置之后产生的粗油脂进一步提纯或出售，其特征是，依据废水流动的方向，在第一路废水处理中，在进入垃圾沥滤液处理系统之前还依次设置混凝装置及气浮装置；在第二路废水处理中，在所述回喷装置之前还设置均质乳化装置和过滤除杂装置，所述垃圾焚烧发电系统主要包括垃圾焚烧炉、余热锅炉、汽轮发电机及设置在垃圾焚烧炉、余热锅炉之后的烟气净化系统。
  2. 一种垃圾焚烧厂协同处理餐厨废弃物的处理方法，还包括以下步骤：
    1.将餐厨垃圾及生活垃圾运输至同一个垃圾池，
    2.垃圾在垃圾池中发酵处理3-5天后，被送入垃圾焚烧炉进行焚烧进而驱动所述汽轮机发电机发电，垃圾焚烧炉进行焚烧后产生的烟气进入所述烟气净化系统进行烟气净化，
    3.垃圾池产生的沥滤液进入三相分离装置进行固、水、油分离，
    4.三相分离产生的固渣进入垃圾池，三相分离产生的废水分两路进行处理，第一路废水由所述垃圾沥滤液处理系统进行处理，经所述垃圾沥滤液处理系统处理之后回用或达标排放；而第二路废水通过所述回喷装置回喷到所述垃圾焚烧发电系统的焚烧炉，而三相分离产生的粗油脂则进一步提纯或出售，
    其特征是，在第4步骤之后，第一路废水依次经混凝处理及气浮处理之后进入垃圾沥滤液处理系统，经混凝处理及气浮处理之后产生的固渣及浮渣分别进入垃圾池；第二路废水依次经均质乳化处理及过滤除杂处理之后进入所述回喷装置。
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