Study on rapid bio-drying technology of cow dung with CaO2

International Symposium on Resource Exploration and Environmental Science

地球科学;生态环境科学

Chen, Xiaotian^1 ; Qu, Guangfei^1 ; Liu, Shugen^1 ; Xie, Ruosong^1 ; He, Yanhua^1

Kunming University of Science and Technology, Kunming

650000, China^1

关键词: Aerobic composting;    Aerobic microorganisms;    Natural ventilation;    Physical characteristics;    Temperature rise;    Thermophilic phase;    Total nitrogen;    Total phosphorus;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/64/1/012112/pdf
DOI  :  10.1088/1755-1315/64/1/012112

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Effect of CaO2on cow dung rapid bio-drying technology was researched. A static aerobic composting system was applied to this experiment which combining natural ventilation with Turing in the process of composting. The physical characteristics of cow dung was observed and the compost temperature, moisture content, organic matter, total nitrogen, total phosphorus, potassium content was determined which in order to study the effect of CaO2on rapid drying of cattle in the compost. In the initial stage of compost, adding CaO2groups compared with the control group, the temperature rise faster, 4-6 days in advance to the thermophilic phase; at the end of composting, the CaO2composition and moisture content decreased significantly to below 30%. The addition of CaO2in fertilizer was shorten the composting time, extend the thermophilic phase, to provide sufficient oxygen meeting the growth needs of aerobic microorganisms. It convinced that the rapid bio-drying of dairy manure has a good effect and provided a new idea for the effective treatment of cow dung.