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Combined treatment method and system for food waste, excrement, illegal cooking oil and kitchen waste

A technology for catering waste and kitchen waste, which is applied in the direction of fuel oil system, chemical instruments and methods, filtration treatment, etc., can solve the problems such as difficult to control the stench, and the large area occupied by aerobic composting, so as to save labor, improve profitability, The effect of reducing operating costs

Inactive Publication Date: 2019-10-18
西藏锦瑞环境科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The promotion of aerobic composting as a large-scale food waste (kitchen) waste method is limited due to the large area occupied by aerobic composting, the difficulty in controlling the stench, and the sale of fertilizers.

Method used

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  • Combined treatment method and system for food waste, excrement, illegal cooking oil and kitchen waste
  • Combined treatment method and system for food waste, excrement, illegal cooking oil and kitchen waste
  • Combined treatment method and system for food waste, excrement, illegal cooking oil and kitchen waste

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Experimental program
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Effect test

Embodiment 1

[0041] use as figure 1 The process shown is combined treatment of catering waste, feces, waste oil and kitchen waste, as follows:

[0042] 1. Pre-treat catering waste, gutter oil and kitchen waste, separate out inorganic debris, crush and make pulp, and separate oil, organic solids and concentrated water;

[0043] Such as figure 2 As shown, the pretreatment steps of food waste include sorting out organic solids and liquids from inorganic impurities, sending them into wet thermal hydrolysis and three-phase separation to obtain crude oil, organic solids and concentrated kitchen water;

[0044] The pretreatment of waste oil includes the use of basket filter frames to remove solids with a particle size of at least 8mm;

[0045] The pretreatment steps of the kitchen waste include removing iron and substances larger than 150 mm, and obtaining broken materials, which are organic solids.

[0046] 2. Anaerobic fermentation of organic solids and concentrated water to generate biogas...

Embodiment 2

[0058] Embodiment 2. A system for combined treatment of catering waste, feces, waste oil and kitchen waste

[0059] A combined treatment system for catering waste, feces, gutter oil and kitchen waste includes a pretreatment system, anaerobic fermentation system, solid-liquid separation system, sewage treatment system and deodorization system.

[0060] The pretreatment system is used to separate inorganic debris from food waste, waste oil and kitchen waste, and then crush and pulp, and to separate oil, organic solids and concentrated water; the anaerobic fermentation system is used to separate organic solids and concentrated water Perform anaerobic fermentation to generate biogas, and obtain biogas residue, biogas slurry and odor; solid-liquid separation system is used for solid-liquid separation of feces and biogas residue to obtain garbage, sundries and sewage; sewage treatment system is used for biogas slurry , Sewage is purified; the deodorization system is used to treat th...

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Abstract

The invention discloses a combined treatment method and system for food waste, excrement, illegal cooking oil and kitchen waste. The method comprises the following steps: 1) pretreating the food waste, the illegal cooking oil and the kitchen waste to separate out inorganic impurities, carrying out crushing, carrying out pulping, and separating out grease, organic solid matter and concentrated water; 2) carrying out anaerobic fermentation on the organic solid matter and the concentrated water to generate biogas and obtain biogas residues, biogas slurry and odor, and carrying out deodorization on the odor; 3) carrying out solid-liquid separation on the excrement and the biogas residues to obtain garbage, impurities and sewage; and 4) carrying out sewage purification treatment on the biogas slurry and the sewage to obtain sludge and water meeting an emission standard. The method and system provided by the invention jointly treat the food waste, the excrement, the illegal cooking oil and the kitchen waste, reduce the operation costs, save labor, share related facilities to a maximum extent, and improve the project profit capacity.

Description

technical field [0001] The invention relates to a method and system for combined treatment of catering waste, excrement, waste oil and kitchen waste, and belongs to the field of domestic waste treatment. Background technique [0002] According to different sources, food waste is mainly divided into food waste and kitchen waste. The former is produced from the leftovers of restaurants, canteens and other catering industries, which has the characteristics of large production, relatively concentrated quantity and wide distribution. The latter mainly refers to the leftovers and leftovers discarded in the daily cooking of residents, which come from thousands of households. Huge but relatively scattered, the overall generation exceeds food waste. Kitchen waste, commonly known as swill, also known as swill and swill, is the domestic waste formed by residents in the process of daily consumption. It is easy to rot and deteriorate, emits foul smell, and spreads bacteria and viruses. ...

Claims

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Application Information

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IPC IPC(8): C02F9/10C02F11/04C02F11/14C02F11/16F02B43/10F02B63/04B09B5/00B09B3/00
CPCB09B3/00B09B5/00C02F1/001C02F1/02C02F1/40C02F9/00C02F11/04C02F11/14C02F11/16F02B43/10F02B63/04Y02E50/30Y02T10/30
Inventor 朱艳吴海亮
Owner 西藏锦瑞环境科技有限责任公司
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