Method for preparing soil conditioner from gelatin solid waste

A soil conditioner and gelatin technology, which is applied in the field of solid waste treatment and disposal in the gelatin industry, can solve the problems of high harm to the atmospheric environment and human health, and easy decay and deterioration during storage and transportation.

Inactive Publication Date: 2018-06-12
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition to bone meal, gelatin solid waste also contains a large amount of easily biodegradable organic substances, which are easy to rot and deteriorate during storage and transportation. If it is not treated in ...

Method used

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  • Method for preparing soil conditioner from gelatin solid waste
  • Method for preparing soil conditioner from gelatin solid waste
  • Method for preparing soil conditioner from gelatin solid waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Material preparation

[0028] The gelatin solid waste was carbonized under the following conditions: carbonization temperature 250 degrees, carbonization time 45min, carrier gas nitrogen flow rate 40ml / min. The obtained carbonized gelatin solid waste is passed through a 0.5mm sieve for later use.

[0029] 2. Soil improvement experiment design

[0030] Two dosages of improvers (20t / hm2, 40t / hm 2 ) was evenly sprinkled on the surface of the soil (soil properties: TOC 11.76g / kg; TN 0.68g / kg; TP 0.39g / kg; TK 17.63g / kg, pH 7.23) on April 6, 2015, and then thoroughly mixed ( The depth is about 15cm). Randomized block design was adopted, with 4 repetitions, each plot area was 1.5x 1.5m, and there was an isolation zone of about 0.5m between the plots. The planted crops are wheat and corn rotation (April 22, 2015-April 10, 2016), and the management measures are the same except for the different dosage of improvers. After harvesting on April 6, 2016, random samples were t...

Embodiment 2

[0036] 1. Material preparation

[0037] Fully mix gelatin solid waste with cow dung (mass ratio 1:1) for carbonization treatment under the following conditions: temperature 220 degrees, carbonization time 60 minutes, carrier gas nitrogen flow rate 50ml / min. Pass the obtained carbonization product-soil conditioner through a 0.5mm sieve for later use.

[0038] The properties of the soil samples used: pH 7.62; organic matter 9.22g / kg; TN 0.72g / kg; AP 48.76mg / kg; AK1345.87mg / kg.

[0039] 2. Soil improvement experiment design

[0040] Pot experiments were used to study the effect of amendments on soil improvement.

[0041]1). Add different amounts of soil amendments (0,5% and 10%) and 20g of compound fertilizer to the soil sample, mix well and put it into the pot. 25 wheat plants were planted in each pot. During the growth period of wheat, the appropriate amount of water should be irrigated according to its growth status to meet the normal growth and development of wheat. Afte...

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Abstract

The invention determines a novel process for preparing an environment-friendly soil conditioner from gelatin solid waste serving as a raw material according to the current domestic situation of low soil fertility, serious soil functional decline and serious pollution and large quantity of solid waste (gelatin solid waste) generated in a gelatin production process. The gelatin solid waste is carbonized under specific conditions or co-treated with other waste biomass to prepare the soil conditioner. By adoption of the gelatin solid waste for preparing the soil conditioner, harmless recycling ofthe gelatin solid waste and soil ecological functional promotion are both realized. In addition, the soil conditioner prepared according to the method has advantages of greenness, environmental friendliness, low cost and the like.

Description

technical field [0001] The invention relates to the treatment and disposal of solid waste in the gelatin industry, and belongs to a new technology for resource utilization of solid waste in the field of environmental protection and resource comprehensive utilization. Background technique [0002] With the wide application of gelatin in various fields, the production of gelatin is increasing day by day. Along with the production of gelatin, a large amount of solid waste is generated (gelatin solid waste). In addition to bone meal, gelatin solid waste also contains a large amount of easily biodegradable organic substances, which are easy to rot and deteriorate during storage and transportation. If it is not treated in time or incorrectly, high-concentration organic waste liquid will be produced, and a large amount of malodorous gas will be released at the same time. It is harmful to water environment, atmospheric environment and human health. At present, the treatment and di...

Claims

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Application Information

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IPC IPC(8): C09K17/40C09K101/00
CPCC09K17/40C09K2101/00
Inventor 刘振刚焦文涛盖超
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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