阅读说明：本技术 一种垃圾焚烧电厂渗滤液处理工艺 (Treatment process for leachate of waste incineration power plant ) 是由 薛凤荣 仇庆东 刘旭东 仇庆林 裴仪成 于 2021-07-26 设计创作，主要内容包括：本发明提供一种垃圾焚烧电厂渗滤液处理工艺,包括以下步骤：S10、渗滤液收集：将垃圾贮坑底部呈浑浊状态的渗滤液进行集中收集至地下收集池中,以待后续处理；S20、渗滤液预处理：对地下收集池中的渗滤液进行预处理,将其中的固体杂质以及大颗粒悬浮物去除,获得清渗滤液；S30、渗滤液集中：利用提升系统将经过预处理后的渗滤液引入渗滤液收集罐中沉淀待用；S40、雾化分解：将渗滤液收集罐中的渗滤液通过雾化装置送入炉膛中,在炉膛中汽化燃烧分解；S50、尾气处理：渗滤液雾化分解后产生的燃烧产物随焚烧炉中垃圾燃烧烟气一同进入烟气处理系统中进行处理后排放。渗滤液处理简单方便,节省投资,占地小,安全性高。(The invention provides a leachate treatment process for a waste incineration power plant, which comprises the following steps: s10, collecting percolate: collecting the percolate in a turbid state at the bottom of the garbage storage pit into an underground collecting tank for subsequent treatment; s20, leachate pretreatment: pretreating percolate in an underground collecting pool, and removing solid impurities and large-particle suspended matters in the percolate to obtain clear percolate; s30, collecting percolate: introducing the pretreated percolate into a percolate collecting tank by using a lifting system for precipitation for later use; s40, atomizing and decomposing: sending the percolate in the percolate collecting tank into a hearth through an atomizing device, and vaporizing, burning and decomposing the percolate in the hearth; s50, tail gas treatment: and combustion products generated after the leachate is atomized and decomposed enter a flue gas treatment system along with the combustion flue gas of the garbage in the incinerator for treatment and then are discharged. The treatment of the percolate is simple and convenient, the investment is saved, the occupied area is small, and the safety is high.)

1. The treatment process of the leachate of the waste incineration power plant is characterized by comprising the following steps of:

s10, collecting percolate: collecting the percolate in a turbid state at the bottom of the garbage storage pit into an underground collecting tank for subsequent treatment;

s20, leachate pretreatment: pretreating percolate in an underground collecting pool, and removing solid impurities and large-particle suspended matters in the percolate to obtain clear percolate;

s30, collecting percolate: introducing the pretreated percolate into a percolate collecting tank by using a lifting system for precipitation for later use;

s40, atomizing and decomposing: sending the percolate in the percolate collecting tank into a hearth through an atomizing device, and vaporizing, burning and decomposing the percolate in the hearth;

s50, tail gas treatment: combustion products generated after the leachate is atomized and decomposed enter a flue gas treatment system along with the waste combustion flue gas in the incinerator for treatment and then are discharged;

wherein atomizing device includes logical liquid pipeline (1), two fluid spray gun (2), sets up the mounting hole at the lateral wall of burning furnace (3), the rifle head of two fluid spray gun (2) stretches into the inside of burning furnace (3) through the mounting hole, leads to liquid pipeline (1) and feeds through filtration liquid collection tank (4) and two fluid spray gun (2), delivery pump (5) are established ties on leading to liquid pipeline (1), under the power effect of delivery pump (5), filtration liquid is sent into two fluid spray gun (2) by filtration liquid collection tank (4), two fluid spray gun (2) still are connected with compressed air source through trachea (6), under compressed air source's effect, filtration liquid in two fluid spray gun (2) becomes the inside that the form jetted into burning furnace (3) of atomizing.

2. The leachate treatment process for the waste incineration power plant according to claim 1, wherein the leachate treatment process comprises the following steps: in step S20, the leachate pretreatment comprises the following steps:

s21, pouring the percolate in a turbid state into a fine filtering net, and intercepting solid impurities and suspended matters on the fine filtering net;

s22, arranging a fine sand box below the fine filtering net, and further filtering the percolate filtered in the step S21 by the fine sand box to remove large-particle impurities;

s23, arranging an activated carbon plate below the fine sand box, and further filtering the percolate filtered in the step S22 by the activated carbon plate to remove small-particle impurities.

3. The leachate treatment process for the waste incineration power plant according to claim 1, wherein the leachate treatment process comprises the following steps: in step S30, when the percolate in the percolate collecting tank reaches two thirds of the volume and the precipitate is kept standing for 2-3h, the next process is carried out.

4. The leachate treatment process for the waste incineration power plant according to claim 1, wherein the leachate treatment process comprises the following steps: in step S40, the port of the compressed air source is proximate the trailing end of the dual fluid spray gun.

Technical Field

The invention relates to the technical field of waste liquid treatment, in particular to a leachate treatment process for a waste incineration power plant.

Background

Waste incineration power plant can pile up fermentation with all kinds of rubbish in the garbage pool, and throw in the rubbish after piling the fermentation to the incinerator, utilize the heat energy of its production to generate electricity, because rubbish piles up the fermentation in-process and can produce a large amount of filtration liquid, after solid rubbish in the garbage pool is emptied, need collect the processing to the filtration liquid in the garbage pool, if directly discharge filtration liquid, will cause serious environmental pollution, therefore, waste incineration power plant also needs effectual good filtration liquid of processing when utilizing rubbish to carry out the electricity generation, involve filtration liquid processing system in the processing procedure.

The leachate of the waste incineration power plant is high-concentration organic wastewater, the conventional treatment process comprises a physical method and a biological method, the treatment process is suitable for large-scale waste landfills, the leachate amount is large, for the waste incineration power plant, the landfill area is small, the produced leachate amount is small, and the existing treatment process is not suitable for the existing working conditions.

Disclosure of Invention

The invention aims to provide a treatment process of leachate of a waste incineration power plant, so as to solve the problems.

In order to achieve the purpose, the invention provides the following technical scheme: a leachate treatment process for a waste incineration power plant comprises the following steps:

s10, collecting percolate: collecting the percolate in a turbid state at the bottom of the garbage storage pit into an underground collecting tank for subsequent treatment;

s20, leachate pretreatment: pretreating percolate in an underground collecting pool, and removing solid impurities and large-particle suspended matters in the percolate to obtain clear percolate;

s30, collecting percolate: introducing the pretreated percolate into a percolate collecting tank by using a lifting system for precipitation for later use;

s40, atomizing and decomposing: sending the percolate in the percolate collecting tank into a hearth through an atomizing device, and vaporizing, burning and decomposing the percolate in the hearth;

s50, tail gas treatment: combustion products generated after the leachate is atomized and decomposed enter a flue gas treatment system along with the waste combustion flue gas in the incinerator for treatment and then are discharged;

wherein atomizing device includes logical liquid pipeline, two fluid spray gun, sets up the mounting hole at the lateral wall of burning furnace, the rifle head of two fluid spray gun stretches into the inside of burning furnace through the mounting hole, leads to the liquid pipeline with filtration liquid collection tank and two fluid spray gun intercommunication, the delivery pump is established ties on leading to the liquid pipeline, under the power action of delivery pump, filtration liquid sends into two fluid spray gun by filtration liquid collection tank, two fluid spray gun still is connected with compressed air source through the trachea, under compressed air source's effect, filtration liquid in the two fluid spray gun becomes the atomizing form and jets into the inside of burning furnace of burning.

As a modification of the present invention, in step S20, the leachate pretreatment includes the following steps:

s21, pouring the percolate in a turbid state into a fine filtering net, and intercepting solid impurities and suspended matters on the fine filtering net;

s22, arranging a fine sand box below the fine filtering net, and further filtering the percolate filtered in the step S21 by the fine sand box to remove large-particle impurities;

s23, arranging an activated carbon plate below the fine sand box, and further filtering the percolate filtered in the step S22 by the activated carbon plate to remove small-particle impurities.

As a modification of the present invention, in step S30, when the volume of the percolate in the percolate collecting tank reaches two thirds of the volume and the precipitate is left standing for 2-3h, the next process is carried out.

As a modification of the present invention, in step S40, the port of the compressed air source is near the trailing end of the two-fluid spray gun.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Detailed Description

The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.

A leachate treatment process for a waste incineration power plant comprises the following steps:

s10, collecting percolate: collecting the percolate in a turbid state at the bottom of the garbage storage pit into an underground collecting tank for subsequent treatment;

s20, leachate pretreatment: pretreating percolate in an underground collecting pool, and removing solid impurities and large-particle suspended matters in the percolate to obtain clear percolate;

s30, collecting percolate: introducing the pretreated percolate into a percolate collecting tank by using a lifting system for precipitation for later use;

s40, atomizing and decomposing: sending the percolate in the percolate collecting tank into a hearth through an atomizing device, and vaporizing, burning and decomposing the percolate in the hearth;

s50, tail gas treatment: combustion products generated after the leachate is atomized and decomposed enter a flue gas treatment system along with the waste combustion flue gas in the incinerator for treatment and then are discharged;

wherein atomizing device includes logical liquid pipeline 1, two fluid spray gun 2, sets up the mounting hole at the lateral wall of burning furnace 3, the rifle head of two fluid spray gun 2 stretches into the inside of burning furnace 3 through the mounting hole, leads to liquid pipeline 1 and communicates filtration liquid collection tank 4 and two fluid spray gun 2, and delivery pump 5 establishes ties on logical liquid pipeline 1, under delivery pump 5's dynamic action, filtration liquid is sent into two fluid spray gun 2 by filtration liquid collection tank 4, and two fluid spray gun 2 still is connected with compressed air source through trachea 6, and under compressed air source's effect, filtration liquid in two fluid spray gun 2 becomes the atomizing form and jets into the inside of burning furnace 3.

As an example of the present invention, a,

in step S20, the leachate pretreatment comprises the following steps:

s21, pouring the percolate in a turbid state into a fine filtering net, and intercepting solid impurities and suspended matters on the fine filtering net;

s22, arranging a fine sand box below the fine filtering net, and further filtering the percolate filtered in the step S21 by the fine sand box to remove large-particle impurities;

s23, arranging an activated carbon plate below the fine sand box, and further filtering the percolate filtered in the step S22 by the activated carbon plate to remove small-particle impurities.

As an example of the present invention, a,

in step S30, when the percolate in the percolate collecting tank reaches two thirds of the volume and the precipitate is kept standing for 2-3h, the next process is carried out.

As an example of the present invention, a,

in step S40, the port of the compressed air source is proximate the trailing end of the dual fluid spray gun.

The working principle and the beneficial effects of the technical scheme are as follows:

the garbage leachate of a garbage incineration power plant is collected by a leachate collecting tank, after reaching a certain capacity, the leachate is conveyed to a boiler area by a leachate conveying pump, a double-fluid spray gun is arranged in a hearth opening of the boiler, the conveyed leachate enters the spray gun and is sprayed into the hearth after being atomized by compressed air, the leachate is vaporized and decomposed in the hearth, combustion products enter a subsequent flue gas treatment process of an incinerator along with flue gas, and the system controls the adding amount of materials in each stage by a corresponding instrument valve and detects the operation condition of the system.

The invention provides a leachate treatment process for a waste incineration power plant, which is simple and convenient in leachate treatment, low in investment, small in occupied area and high in safety.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.