Chemical conditioning type deep dehydration method for kitchen waste and dehydration system

Abstract

The invention relates to a chemical conditioning type deep dehydration method for kitchen waste. The process comprises the following steps: treating the kitchen waste with a waste coarse crushing machine and a waste fine crushing machine in sequence to obtain kitchen waste slurry; then enabling aluminum sulfate (Al2(SO4)3), cationic polyacrylamide (PAM) and hydrogen peroxide (H2O2) to be subjectedto a chemical reaction with components in the kitchen waste slurry in a conditioning tank in sequence, so as to damage inner structures between granular cells in the kitchen waste slurry and surfaceadsorption structures of granular cell walls, and decompose inner bound water between the granular cells or on the surfaces of the granular cells; then carrying out a squeezing deep dehydration procedure on the kitchen waste slurry through a plate and frame membrane filter press, so as to obtain the dehydrated kitchen waste with the moisture content lower than 60%. By adopting the chemical conditioning type deep dehydration method for the kitchen waste, the moisture content of dehydrated kitchen waste residues is greatly reduced, and the improvement on the reduction degree of the treatment ofthe kitchen waste and the protection on the balance of a natural ecological environment are facilitated. The dehydration system provided by the invention achieves the aim of reducing the treatment cost.

Description

【Technical field】 [0001] The invention relates to a chemical conditioning deep dehydration method for kitchen waste used in the field of environmental protection and the dehydration system. 【Background technique】 [0002] With the increasing population of the society and consumers generating more and more domestic waste every day, the disposal of domestic waste has become the most serious social primary problem. In order to solve the technical problems of domestic waste disposal, various waste disposal methods appeared subsequently, and most of the waste disposal methods used conventional crushing, pressing, incineration, and landfill methods. In this treatment method, due to the relatively high moisture content of the kitchen waste itself, the moisture content of the garbage residue after crushing and crushing basically reaches more than 80%. If the garbage residue with more than 80% is burned Or landfill treatment, the degree of reduction is not high, it is easy to destro...

AI Technical Summary

Problems solved by technology

In this treatment method, due to the relatively high moisture content of the kitchen waste itself, the moisture content of the garbage residue after crushing and crushing basically reaches more than 80%. If the garbage residue with more than 80% is burned Or landfill treatment, the degree of reduction is not high, it is easy to destroy the ecological balance of the original environment, and the treatment cost is relatively high

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