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Method for preparing slow-release nutrient soil based on kitchen waste

A food waste and slow-release technology, which is applied in the field of nutrient soil and the use of food waste to prepare nutrient soil, can solve the problems of harmless food waste, insufficient resource processing capacity and level, and the recovery and utilization rate of food waste. Improvement and other issues, to achieve the effects of sustainable development and utilization, efficient utilization of waste and soil resources, and reduction of production costs

Pending Publication Date: 2021-04-20
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nowadays, the harmless and resourceful treatment capacity and level of food waste are relatively insufficient, and the recycling rate of food waste needs to be improved

Method used

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  • Method for preparing slow-release nutrient soil based on kitchen waste
  • Method for preparing slow-release nutrient soil based on kitchen waste

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Experimental program
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Effect test

Embodiment 1

[0019] The following embodiments will further describe the present invention in detail in conjunction with the flow chart.

[0020] The raw food waste of the present invention is obtained from the storage place of the food waste in the canteen, and the food waste contains nitrogen, phosphorus, potassium and organic components effective for farmland.

[0021] specific process

[0022] according to figure 1 In the flow chart shown, potassium phosphate and bentonite are dried and passed through a 200-mesh sieve. Put 3g of prepared bentonite and 1g of potassium phosphate in a ball mill for 2 hours at 120r / min, and then mix the raw materials and water at 1.15g / ml , then granulate, the particle size is 4-6mm, put it into the muffle furnace to heat up, first preheat to 300°C, keep it warm for 1h, then continue to heat to 600°C, keep it for 2h, then lower it to room temperature and take it out, then put the straw The lignin extracted from the soil is sprayed on the surface of the gr...

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Abstract

The invention provides a method for preparing slow-release nutrient soil based on kitchen waste, and the method comprises the following steps: by using kitchen waste as a basic raw material, grinding the kitchen waste into powder by using N, P, K, organic matters and other nutrient components required by various crops after mixing the kitchen waste and potassium phosphate rich in P and K elements, carrying out ball milling by a ball mill, and after performing sufficient mixing to obtain the slow-release nutrient soil, performing granulating by taking water as an adhesive, and performing calcining at high temperature to prepare nutrient soil particles which are rich in various plant growth nutrient elements and have a slow release function. The method has the comprehensive advantages that the preparation process is simple, industrial production is easy, the environment is protected, and resource reutilization of the kitchen waste is achieved, the kitchen waste is subjected to reduction and resource treatment, the environment is effectively improved, and the preparation cost of the nutrient soil is reduced.

Description

technical field [0001] The invention relates to the utilization of solid waste resources and the preparation of nutrient soil, and specifically belongs to a method for preparing nutrient soil by using kitchen waste. The invention relates to the reuse of solid waste, in particular to the transformation of kitchen waste into nutrient soil with slow release of nutrients. Background technique [0002] Nowadays, the harmless and resourceful treatment capacity and level of food waste are relatively insufficient, and the recycling rate of food waste needs to be improved. Landfill is the most common way to dispose of food waste. The food waste is collected and transported to a designated disposal site for landfill. This technology has the advantages of simple process, convenient operation, and low cost. According to my country's economic and technological level and the composition of food waste, landfill will still be the main method of disposal of urban food waste in my country fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/40C05G5/12C05G5/30
Inventor 朱琦杜宇邢子鹏
Owner HEILONGJIANG UNIV
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