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Process for recycling of kitchen waste and garden waste

A technology for greening waste and kitchen waste, applied in the field of recycling waste, can solve the problems of not being widely used, high treatment cost, micro-benefit, etc., to make up for incomplete nutrition, efficient sterilization and sterilization, and reduce energy loss. Effect

Inactive Publication Date: 2015-05-06
上海申迪园林投资建设有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the widespread use of high-grade energy heating methods such as electric heating, gas, and steam, the thermal efficiency is low and the energy consumption is large, so the processing cost is very high, resulting in economical micro-benefits or even negative benefits
In the first phase of a domestic project, a kitchen waste treatment plant with a daily processing capacity of 200 tons was built. Natural gas is used as a heat source, and the processing cost per ton is more than 1,000 yuan. The company still relies on government financial subsidies to maintain its operation. Obviously, this is not sustainable. mode, so the technology is not widely adopted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The technological steps of recycling kitchen waste and greening waste are as follows:

[0029] 1. Garbage pretreatment

[0030]The collected food waste is classified uniformly, and is mainly divided into two categories: good-quality waste (water has been filtered and has less debris content) and a small number of waste that needs to be pre-treated due to source separation and omissions. The former is directly crushed to increase the follow-up reaction rate, and at the same time eliminate the damage to the equipment by hard objects such as big bones and seafood shells; the latter is first manually assisted sorting to reduce the impurity content or put into the oil-water-solid three-phase separation equipment to reduce the moisture content of the material , and then crush it. The collected large-scale green waste such as branches and vines is crushed through a large crusher, and then put into a small crusher together with other green waste (fallen leaves, weeds, etc.)...

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Abstract

The invention aims at providing an energy-saving and environmentally-friendly efficient process for recycling of kitchen waste and garden waste by using low-grade energy. The process comprises the following steps: firstly preprocessing the waste; uniformly classifying the collected kitchen waste and smashing the kitchen waste; smashing the collected large-size garden waste by a large pulverizer, and putting the large-size garden waste and the other small-size garden waste into a small pulverizer to further smash; proportionally putting the preprocessed kitchen waste and the garden waste into a high-temperature aerobic fermentation reactor, wherein the feeding method is a sequencing batch feeding method, and the moisture content of the reacted product is less than or equal to 30%; sieving the processed initial product to filter out the non-treatable large-particle-size impurities, after mixing, processing the product into a planting soil raw material, a soil conditioner or an organic fertilizer according to different uses.

Description

technical field [0001] The invention belongs to the field of resource disposal of waste, and in particular relates to a process method for resource disposal of kitchen waste and greening waste by using low-grade energy for high-temperature aerobic fermentation. Background technique [0002] With the development of social economy and the improvement of people's living standards, the amount of municipal solid waste is increasing day by day, especially the most rapid growth of kitchen waste. Food waste has a high organic content and is extremely perishable. If it is not disposed of properly, it will cause great pollution to the environment. But on the other hand, the nutrient-rich characteristics of food waste also make it a good resource raw material. If it is used rationally, it will create huge resource utilization value. [0003] Greening waste is also a stubborn disease of urban organic waste treatment, which can neither be incinerated nor landfilled, which is not economi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/00C05F9/04
CPCC05F5/002C05F9/00C05F11/08C05F17/00Y02A40/20Y02W30/40
Inventor 安莹黄亦明杜诚周坤张勇伟何其伦承中良
Owner 上海申迪园林投资建设有限公司
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