Method for preparing greening fertilizer from kitchen garbage

A kitchen waste and fertilizer technology, which is applied in the preparation of organic fertilizers, fertilizers made from biological waste, organic fertilizers, etc., can solve the problem of secondary pollution sources, emission status and control measures, and there are no related researches, and soil structure cannot be improved , soil and plant hazards, etc., to achieve the effects of reducing soil bulk density, promoting reproductive metabolism, and protecting the environment

Active Publication Date: 2018-05-08
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, domestic and foreign research on the fertilization of kitchen waste is mainly focused on engineering technology, and the fertilization process is continuously optimized from the parameters of composting raw materials and the conditions of the composting process, but the source of secondary pollution in the process of fertilization Intensity, emission status and control measures have no relevant research
[0004] There are many methods about the technology of using kitchen waste to prepare fertilizers. The prior art, such as the Chinese invention patent with the authorized public number CN104261959 B, discloses a material composition and a preparation method for u

Method used

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  • Method for preparing greening fertilizer from kitchen garbage
  • Method for preparing greening fertilizer from kitchen garbage
  • Method for preparing greening fertilizer from kitchen garbage

Examples

Experimental program
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Effect test

Embodiment 1

[0020] A method for making greening fertilizer from kitchen waste, comprising the following steps:

[0021] 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, 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 then pulverize, put the fermented product in a fermenter...

Embodiment 2

[0023] A method for making greening fertilizer from kitchen waste, comprising: pretreatment, desalination and deoiling, aerobic fermentation, and posttreatment, specifically including the following steps:

[0024] 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;

[0025] 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

[0029] Keep adding 0.005 parts of L-(-)-erythrose in the aerobic fermentation step in Example 2, and change the amount of L-(+)-erythrose to 0.005 parts, 0.01 parts, and 0.015 parts respectively , 0.025 parts, ..., 0.095 parts, 0.1 parts, that is to set 20 different L-(+)-erythrose addition amounts, so that L-(+)-erythrose and L-(-)-erythrose 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.

[0030] 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:

[0031] Table 1. Chlorophytum growth hei...

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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. technical background [0002] 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 my country's urban domestic waste, 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 a waste ...

Claims

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Application Information

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IPC IPC(8): C05F17/00C05G3/00C05G3/04C05G3/80
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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