钢渣调理剂对污泥好氧堆肥的影响  

Effect of Steel Slag Conditioner on Sludge Aerobic Composting

作　　者：张诗华[1] 葛瑞琦 程东 张新喜[2] ZHANG Shihua;GE Ruiqi;CHENG Dong;ZHANG Xinxi(School of Civil Engineering,Anhui University of Technology,Maanshan 243032,China;Biofilm Water Purification and Utilization Technology Ministry of Education Engineering Research Center,Anhui University of Technology,Maanshan 243032,China)

机构地区：[1]安徽工业大学建筑工程学院,安徽马鞍山243032 [2]安徽工业大学生物膜法水质净化及利用技术教育部工程研究中心,安徽马鞍山243032

出　　处：《安徽工业大学学报（自然科学版）》2021年第3期242-249,共8页Journal of Anhui University of Technology（Natural Science）

基　　金：安徽省自然科学基金项目(2008085ME176)。

摘　　要：以钢渣作为调理剂与污泥进行混合堆肥,研究钢渣对堆肥温度、含水率、有机质及铵态氮含量的影响,通过微生物高通量测序技术分析堆肥过程中细菌群落变化特征,通过冗余分析评估环境因子与细菌群落之间的相关性。结果表明:添加钢渣能够提高堆肥温度,延长高温维持时间并降低含水率,促进污泥中铵态氮的转化,有利于降低氮损失和提高有机质降解率;钢渣影响堆肥中细菌群落结构和多样性,能够提升堆肥后期厚壁菌门和放线菌门的相对丰度,促进堆体内纤维素的分解,含质量分数15%的钢渣堆肥中菌群多样性与丰富度最大;温度、含水率、有机质、铵态氮等因素和细菌群落结构呈正相关,调节上述因素可有效改善堆肥质量。Using steel slag as a conditioner and sludge for mixed composting,the effects of steel slag on composting temperature,moisture content,contents of organic matter and ammonium nitrogen were studied.The variation characteristics of bacterial community during composting were analyzed by microbial high-throughput sequencing technology,and the correlation between environmental factors and bacterial community was evaluated by redundancy analysis.The results show that the addition of steel slag can increase the compost temperature,extend the high temperature maintenance time and reduce the moisture content,promote the conversion of ammonium nitrogen in the sludge,which is beneficial to reduce nitrogen loss and increase the degradation rate of organic matter;steel slag affects the bacterial community structure and diversity in the compost,it can increase the relative abundance of Firmicutes and Actinomycotas in the later stage of composting,and promote the decomposition of cellulose in the pile,the diversity and richness of bacteria in compost containing 15%steel slag are the highest.Temperature,moisture content,organic matter,ammonium nitrogen and other factors were positively correlated with the bacterial community structure,and adjusting the above factors can effectively improve the composting quality.

关 键 词：钢渣 污泥堆肥 调理剂 微生物群落 

分 类 号：TF09[冶金工程—冶金物理化学] TU992.3[建筑科学—市政工程]