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Kitchen waste treatment biochar soil conditioning agent and preparation method thereof

A technology of soil conditioner and kitchen waste, which is applied to the preparation of organic fertilizers, fertilizers made from biological waste, and the treatment of biological organic parts. It can solve the problems of single utilization, high cost of field application, and low content of biochar nutrients. and other problems, to achieve the effect of enriching sources, inhibiting the growth of pathogens, and increasing the number and activity

Inactive Publication Date: 2018-07-27
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of single utilization mode of urban kitchen waste in my country, low nutrient content in biochar, and high field application cost. The purpose of the present invention is to provide a preparation of biochar soil conditioner for kitchen waste treatment The method uses biochar as the basic material, and at the same time adds additives such as kitchen waste, vermicompost, agricultural beneficial bacteria, wood vinegar, peanut shells and other additives for aerobic composting.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A preparation method of a biochar soil conditioner for kitchen waste treatment, comprising the steps of:

[0022] 1) Carbonize forest waste in a carbonization furnace:

[0023] a) drying forest waste until its water content is 6wt%;

[0024] b) Put the air-dried forest waste into a large-scale biochar carbonization furnace, and conduct closed pyrolysis at 400°C for 5 hours under fully isolated air;

[0025] c) Airtight and anaerobic cooling of the pyrolyzed forest biochar to 25°C to obtain forest biochar;

[0026] 2) Mix 70.80kg of forest biochar, 16.96kg of kitchen waste, 4.60kg of peanut shells, 12.48kg of vermicompost, 4.60kg of wood vinegar, 1kg of humic acid and 0.6kg of agricultural beneficial bacteria in proportion to obtain a fertilizer mixture ;

[0027] 3) adding water to the fertilizer mixture so that its water content reaches 40 wt% of the maximum water holding capacity, putting it into a container, and carrying out aerobic composting and fermentation for...

Embodiment 2

[0034] The present embodiment adopts the preparation method described in Example 1 to prepare the biochar soil conditioner, the difference being:

[0035] In the preparation process of the biochar modifier, the amount of raw materials added per 100kg of biochar-based fertilizer is as follows: 67.80kg of forest biochar, 19.10kg of kitchen waste, 8.45kg of vermicompost, 4.05kg of peanut shells, 0.20kg of wood vinegar liquid and 0.40kg agricultural beneficial bacteria agent.

[0036] In the aerobic composting fermentation, the initial moisture content of the compost was 60wt%, and the composting fermentation time was 90 days.

[0037] The biochar soil conditioner prepared by the above method is used for rapeseed planting.

Embodiment 3

[0039] The present embodiment adopts the preparation method described in Example 1 to prepare the biochar soil conditioner, and apply the obtained biochar soil conditioner to capsicum potted cultivation:

[0040] The cultivation experiment was carried out in a greenhouse in Laoshan District, Qingdao City, Shandong Province, and the soil used for the test was local farmland soil. According to ① 0% blank group, ② 1.5% biochar group, ③ 1.5% biochar mixed with 0.25% wood vinegar dilution group, ④ 1.5% biochar-based conditioner compost group, the same supply Test soil mixture, all are mass fractions (w:w). Put them into plastic flowerpots with a height of 25cm, an upper radius of 35cm, and a lower radius of 20cm. Each flowerpot is filled with 5kg of soil, and the bottom of the plastic basin is supported by a tray. Five replicate samples are set for each group of treatments.

[0041] The test crop is pepper, and the variety is American extra large horn pepper. Pepper seeds are sub...

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Abstract

The invention discloses a kitchen waste treatment biochar soil conditioning agent and a preparation method thereof, and relates to the field of a fertilizer. The preparation method comprises the following steps of (1) uniformly mixing wood biochar, kitchen waste, peanut shell, wormcast, wood vinegar, humic acid and agricultural beneficial agents according to the proportion to obtain a fertilizer mixture; (3) adding water into the fertilizer mixture; charging the materials into a container; performing aerobic compost fermentation to obtain a biochar compost product; (4) drying the biochar compost products in the air; performing screening to obtain the biochar soil conditioning agent. The urban kitchen waste resource utilization can be realized; meanwhile, the economic cost problem of low nutrition substance content of the biochar can be solved; the soil is improved; the characteristics of durability, high efficiency, environment protection, safety, stability, energy saving and environment protection are realized.

Description

technical field [0001] The invention relates to the field of fertilizers, in particular to a biochar soil conditioner for treating kitchen waste and its preparation method and application. Background technique [0002] Kitchen waste, also known as swill, refers to the organic materials produced in the process of food processing and dining in households, enterprises, institutions, school canteens, restaurants and other places. As an important part of urban domestic organic waste, it has a high moisture content, It has the characteristics of high organic matter content, high nutrients and low harmful components. In recent years, the discharge of kitchen waste has increased year by year, and the environmental pollution caused by it has become increasingly prominent. Therefore, how to deal with and utilize kitchen waste reasonably and safely puts forward more requirements for solving urban organic waste pollution in our country. [0003] At present, the existing kitchen waste ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04C05F17/00C05G3/80
CPCC05D9/00C05F17/00C05G3/00C05G3/80C05F3/00C05F5/002C05F9/00C05F11/02C05F11/08Y02W30/40
Inventor 郑浩李锋民
Owner OCEAN UNIV OF CHINA
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