Harmless Treatment and Composting Safety Evaluation of Discarded Cabbage Based on Microbial Fermentation

doi:10.13961/j.cnki.stbctb.2019.03.027

Home > Archive>Volume 39, Issue 3, 2019 >163-169. DOI:10.13961/j.cnki.stbctb.2019.03.027

Harmless Treatment and Composting Safety Evaluation of Discarded Cabbage Based on Microbial Fermentation
DOI:
                        10.13961/j.cnki.stbctb.2019.03.027
                    
Author:
                        Li RuiqinLi Ruiqin
Agricultural Quality Standards and Testing Technology Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Animal Husbandy, Pasture and Green Agricultural Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Laboratory of Quality & Safety Risk Assessment for Agro-products(Lanzhou), Ministry of Agriculture, Lanzhou, Gansu 730070, China
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Xu RuiXu Rui
Agricultural Quality Standards and Testing Technology Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Animal Husbandy, Pasture and Green Agricultural Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Laboratory of Quality & Safety Risk Assessment for Agro-products(Lanzhou), Ministry of Agriculture, Lanzhou, Gansu 730070, China
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Yu AnfenYu Anfen
Agricultural Quality Standards and Testing Technology Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Animal Husbandy, Pasture and Green Agricultural Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Laboratory of Quality & Safety Risk Assessment for Agro-products(Lanzhou), Ministry of Agriculture, Lanzhou, Gansu 730070, China
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Bai BinBai Bin
Agricultural Quality Standards and Testing Technology Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Animal Husbandy, Pasture and Green Agricultural Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Laboratory of Quality & Safety Risk Assessment for Agro-products(Lanzhou), Ministry of Agriculture, Lanzhou, Gansu 730070, China
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Ding WenjiaoDing Wenjiao
Agricultural Quality Standards and Testing Technology Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Animal Husbandy, Pasture and Green Agricultural Institute, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China;Laboratory of Quality & Safety Risk Assessment for Agro-products(Lanzhou), Ministry of Agriculture, Lanzhou, Gansu 730070, China
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Clc Number:Q938.1+1
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Abstract:

[Objective] This study aims at discussing the harmlessness treatment and maturity safety of waste vegetable leaves with microbial agent, in order to solve the problems of environmental pollution during fermentation, and improve the porosity, ventilation and temperature of fermentation reactor.[Methods] Waste vegetable leaves were used as raw materials, corn straw and cow dung were used as auxiliary materials, and methods such as adjusting the carbon-nitrogen ratio of fermentation raw materials, types of microbial inoculum, moisture and temperature of fermentation stack were adopted.[Results] The optimal ratio of microbial fermentation raw materials for waste vegetable leaves was optimized, and the weight ratio of waste vegetable leaves, corn stalks, cow dung and fermenting agent was 100:4:2:0.25. A set of evaluation system for microbial fermentation maturity index of waste vegetable leaves was established. The temperature of the fermentation reactor was ≥ 50℃, lasts for 3~5 days, pH value was ≤ 8.0, conductivity was ≥ 2.0 mS/cm, E₄/E₆ ratio was ≤ 2.5, C/N ratio was < 20, and germination index GI was >80. The nutrients and safety limit indexes of total nitrogen, organic matter, alkali nitrogen and available potassium of the fermentation products were in line with industry standards.[Conclusion] The pH value, electrical conductivity, E₄/E₆, C/N, GI and other physicochemical and biological indicators of the product of microbial fermentation in the waste cabbage leaves all meet the requirements of the fertility and safety limits of vegetable cultivation matrix.

Key words:waste leaves;microbial fermentation;ratio of raw materials;regulation of fermentation conditions;maturity evaluation index

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李瑞琴,徐瑞,于安芬,白滨,丁文姣.基于微生物发酵的废弃菜叶无害化处理及腐熟安全性评价[J].水土保持通报英文版,2019,39(3):163-169

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Received:May 24,2018
Revised:November 12,2018
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Online: July 04,2019
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