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青藏高原农村户用旱厕粪污掺青稞秸秆堆肥试验研究
Experimental Study on Composting of Rural Household Dry-toilet Manure Mixed with Highland Barley Straw in Qinghai-Xizang Plateau
【摘要】 厕所粪污有效治理是农村环境卫生整治工作的重要方面。为高效实现青藏高原农村地区旱厕粪污好氧堆肥,基于粪污理化特性,选取青藏高原农村家用旱厕粪污和青稞秸秆作为原料,通过正交试验探讨C/N、堆肥原料(旱厕粪污、青稞秸秆、腐熟料)添加比例、含水率和通风方式4种因素对旱厕粪污好氧堆肥的影响。结果表明:青藏高原农村家用旱厕粪污具有含水率高、有机质含量高、C/N低、重金属含量低以及种子发芽指数低等特点,具有良好的堆肥资源化潜力;各因素对青藏高原农村旱厕粪污好氧堆肥的影响程度为C/N>堆肥原料添加比例>含水率>通风方式;确定最优工艺参数为C/N=30、旱厕粪污∶青稞秸秆∶腐熟料的添加比例为2.0∶0.7∶0.3(以湿基计)、含水率55%及持续通风(通风速率为0.42 L·min-1·kg-1)。本研究可为青藏高原农村地区旱厕粪污及青稞秸秆实现高效资源化利用提供理论依据,对推动当地美丽乡村建设和可持续发展具有重要意义。
【Abstract】 Effective treatment of toilet feces is an important aspect of rural environmental sanitation remediation. In order to efficiently realize the aerobic composting of toilet manure in rural areas of the Qinghai-Xizang Plateau,based on the physical and chemical characteristics of manure,household dry-toilet manure and highland barley straw in rural areas of the Qinghai-Xizang Plateau were selected as compost raw materials,and the effects of four factors,namely C/N,decompose clinker(dry-toilet manure,highland barley straw,mature compost)addition ratio,moisture content,and ventilation mode on aerobic composting of dry-toilet manure were investigated through orthogonal experiments. The results showed that the manure of rural dry-toilet in the Qinghai-Xizang Plateau had the characteristics of high moisture content,high organic matter content,low C/N,low heavy metal content,and low seed germination index,and had good potential for compost recycling. The influence of various factors on the aerobic composting of dry-toilet manure in rural areas of the QinghaiXizang Plateau was C/N > the proportion of decomposing clinker > moisture content > ventilation mode. The optimal process parameters were as follows:the C/N ratio was 30,the proportion of compost raw materials(dry-toilet manure∶highland barley straw∶ mature compost)addition was 2.0∶ 0.7∶ 0.3(in terms of wet weight),the moisture content was55%,and the ventilation mode was continuous ventilation(ventilation rate was 0.42 L·min-1·kg-1). This research work provides a theoretical basis for the efficient resource utilization of household dry-toilet manure and highland barley straw in the rural areas of the Qinghai-Xizang Plateau,and is of great significance for promoting the construction and sustainable development of local beautiful villages.
【Key words】 manure characteristics; aerobic composting; process optimization; orthogonal test;
- 【文献出处】 环境卫生工程 ,Environmental Sanitation Engineering , 编辑部邮箱 ,2026年01期
- 【分类号】S141.4
- 【下载频次】29