Comprehensive pre-treatment method of kitchen garbage and gutter oil

A technology of kitchen waste and gutter oil, which is applied in the direction of recycling fat oil/fatty acid from waste materials, recycling technology, fat generation, etc., can solve the problems of poor overall operation, insufficient estimation of raw material impurities, lack of experience, etc., to achieve realization Effects of harmlessness and resource utilization, reduction of residence time, and improvement of separation accuracy

Inactive Publication Date: 2016-02-03
CECEP BEIJING ENERGY SAVING ENVIRONMENTAL PROTECTION ENG CO LTD
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Most of the projects put into production above have problems such as blindly introducing imp

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  • Comprehensive pre-treatment method of kitchen garbage and gutter oil

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[0034] A comprehensive pretreatment method for food waste and waste oil, which is a method for separating industrial grease and other impurities to be treated from food waste and waste oil, including: material receiving treatment, sorting treatment, and pulping treatment , deoiling treatment and overall deodorization treatment;

[0035] The steps of the receiving process are:

[0036] a. Bag-breaking treatment is first performed on the food waste. After the bag-breaking treatment, the water leached from the food waste is sent to the grit chamber, and the solid components of the waste are sent to sorting treatment;

[0037] b, the waste oil first flows into the storage tank through the vibrating screen, and the grease content data is obtained from the storage tank for reporting, and then the waste oil is sent to the grit chamber, wherein the sieve aperture of the vibrating screen ranges from 3-10mm;

[0038] The steps of the sorting process are:

[0039] a. The solid componen...

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Abstract

The present invention discloses a comprehensive pre-treatment method of kitchen garbage and gutter oil. The method comprises material collection, sorting treatment, pulping treatment, deoiling treatment and overall deodorization treatment. By adopting a multi-step and multi-stage sorting process, the method disclosed by the invention effectively separates non-biomass impurities in kitchen wastes, thereby providing an advantageous condition for a subsequent treatment process. According to the present invention, a two-stage centrifugal manner is used in grease separation and purification for increasing the separation accuracy, reducing the residence time, reducing the energy consumption, and a primary stage horizontal centrifuge is used for solid-liquid separation and a secondary vertical centrifuge is used for oil-water separation. As materials with a high solid content separated by the primary centrifuge no longer enter into the secondary centrifuge, the energy consumption is significantly reduced, the residence time can be shortened, and the separation accuracy is improved. According to the method disclosed by the present invention, the pre-treated materials have an ultra low oil content, can be adaptive to various post-treatment processes of composting, producing biogas by anaerobic fermentation, processing feeds and the like, and can be flexibly applied to subsequent process, thus providing a guarantee for realizing harmlessness and recycle of kitchen wastes.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a comprehensive pretreatment method for kitchen waste and waste oil. Background technique [0002] Catering biomass waste refers to food residues, food processing waste, waste edible oils (including non-edible animals, etc.) Vegetable grease and various oil-water mixtures), waste oil and other garbage. Food and kitchen biomass waste has high water content, high salt content, high pepper / acetic acid content in some areas, high content of organic matter, protein cellulose, starch, fat, etc., pathogenic bacteria and pathogenic microorganisms, and is easy to rot, deteriorate, and develop at room temperature. Stinky and a breeding ground for mosquitoes. [0003] At present, the kitchen biomass waste in my country's cities is in a state of serious disorderly management. The harmless rate of kitchen biomass waste is low, and it has not been properly treated for a long time. "Ga...

Claims

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Application Information

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IPC IPC(8): C11B13/00
CPCY02W30/74
Inventor 吴晓吕刚李荣建乌日娜杜巍胡泊张忠河
Owner CECEP BEIJING ENERGY SAVING ENVIRONMENTAL PROTECTION ENG CO LTD
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