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Method for making greening fertilizer from kitchen waste

A kitchen waste and fertilizer technology, which is applied in the preparation of organic fertilizers, fertilizers made from biological wastes, organic fertilizers, etc., can solve the problems of inability to improve soil structure, harm to soil and plants, and low promotion value, so as to reduce soil The effect of bulk density, environmental protection and harm reduction

Active Publication Date: 2021-03-16
ZHEJIANG OCEAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The Chinese invention patent of CN 104261959 B discloses a material composition and a preparation method of using food waste to make organic fertilizer. The inventive method uses food waste powder, straw powder, humic acid powder and lactic acid bacteria powder as organic fertilizer combination It has the advantages of simple preparation, low price and environmental protection, but it does not completely ferment and decompose kitchen waste, it is only simply combined into organic fertilizer, and its fermentation process in the soil solution will be very slow, so the fertilizer efficiency is too low , and the salt in the kitchen waste will cause harm to the soil and plants, and this organic fertilizer cannot improve the soil structure, so the promotion value is low

Method used

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  • Method for making greening fertilizer from kitchen waste

Examples

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Effect test

Embodiment 1

[0022] A method for making greening fertilizer from kitchen waste, comprising the following steps:

[0023] 1) Mix food waste powder and water in a weight ratio of 1:2, stir for 10 minutes at 23°C, and take the solid after standing; Cook at high temperature for 60 minutes, after standing still, take the solid matter and dehydrate it at 4000r / min for 8 minutes, and take the solid matter for use; reducing the salt content and oil content of kitchen waste can improve the quality of compost products, not only enhance the activity of microorganisms , improve composting efficiency, and can effectively alleviate soil acidification, reduce the damage to crop roots, and long-term use will not cause soil salinization; 2) Weigh 150 parts of desalted and dehydrated kitchen waste, 90 parts of sawdust, bacteria 20 parts of bran, 30 parts of mushroom dregs, 50 parts of pond sludge, L-(+)-erythrose 0.0636L-(-)-erythrose 0.0064, mix well and pulverize, put the fermented product in a fermenter;...

Embodiment 2

[0025] A method for making greening fertilizer from kitchen waste, comprising: pretreatment, desalination and deoiling, aerobic fermentation, and posttreatment, specifically including the following steps:

[0026] Pretreatment: remove plastics, stones, cigarette butts, waste paper, batteries, metals, wood and other impurities in the kitchen waste, then squeeze it out, squeeze out the excess water, put it into a shredder, and crush it into 1 mm particles for use ;Sort the kitchen waste before composting, remove the non-degradable substances, and the rest is mainly organic biological waste, preparing for the next step;

[0027] Desalination and deoiling: Mix food waste and water at a weight ratio of 1:3, stir for 15 minutes at 28°C, and take the solid after standing; add 2 times distilled water to the solid and mix evenly at 98 Cook at ℃ for 80 minutes, after standing still, take the solid matter and dehydrate it at 5000r / min for 10 minutes, take the solid matter for use; too hi...

Embodiment 3

[0031] Keep adding 0.005 parts of L-(-)-erythrose in the aerobic fermentation step in Example 2, and at the same time change the amount of L-(+)-erythrose to 0.005 parts, 0.01 parts, and 0.015 parts respectively . The weight ratio of erythrose is 1:1, 2:1, 3:1, ..., 19:1, 20:1, and 20 different L-(+)-erythrose and L-(-) -Erythrose weight ratio fertilizer.

[0032] With the quick-acting compound fertilizer purchased from Suqian Dafuyuan Landscaping Co., Ltd. as the control group fertilizer, the control group fertilizer and the kitchen waste greening fertilizer in Examples 1-3 are applied to potted Chlorophytum, and the growth rate of the seedling height and The interrelationship of fertilization time, the experimental result of control group and embodiment 1, embodiment 2 is sorted out as shown in table 1:

[0033] Table 1. Chlorophytum growth height in the control group and embodiment 1-2

[0034] group control group Example 1 Example 2 Fertilization 20...

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Abstract

The invention discloses a method for preparing a greening fertilizer from kitchen garbage, wherein the method includes the steps of pre-treatment, desalting and deoiling, aerobic fermentation and post-treatment and particularly includes the steps: carrying out sorting and impurity removal of the kitchen garbage, desalting and deoiling, then adding a microbial agent, carrying out aerobic fermentation, and carrying out mixed granulation with functional bacteria to obtain the greening fertilizer. The method has the beneficial effects that the amount of waste is reduced, and the fertilizer is alsorich in substances such as organic matters, amino acids, organic-state nitrogen, phosphorus and potassium, medium and trace elements and the like essential for plant growth; moreover, the fertilizerhas the effects of carbon fixation and water retention, and can also increase the retention of soil nutrients, reduce the soil bulk density and increase the porosity. Therefore, the greening fertilizer is a high-efficiency and environmental-protection greening fertilizer.

Description

technical field [0001] The invention relates to the field of fertilizer preparation, in particular to a method for preparing greening fertilizer from kitchen waste. [0002] technical background [0003] Kitchen waste is a general term for waste such as leftovers, expired food, and leftovers formed in the process of processing and consuming food in the catering industry, food processing industry, and households. As an important type of municipal solid waste, kitchen waste accounts for 37-62% of urban domestic waste in my country, and the absolute amount is increasing year by year. Kitchen waste has the characteristics of high water content, high organic matter, high fat, and high salt content. Generally speaking, its water content is 70-90%, oil content is 150-6000mg / L, and salt content is 1.58g / L. In terms of dry matter, its organic matter content reaches 80%-93%. Therefore, using traditional methods such as landfill and incineration to dispose of kitchen waste is not only...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05F17/10C05F17/20C05F17/80C05G3/00C05G3/80
CPCC05D9/00C05G3/00C05F17/50C05G3/80C05F5/00C05F7/00C05F9/00C05F11/00C05F11/08C05F17/20C05F3/00C05F5/002Y02W30/40
Inventor 孙静亚
Owner ZHEJIANG OCEAN UNIV
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