调理剂投配比及粒径对污泥堆肥的影响研究  

Study of effects of amount and particle size of new conditioner on sludge composting

作　　者：吴传栋[1] 王科[1] 李伟光[1,2] 吕龙义 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090 [2]城市水资源开发利用<北方>国家工程研究中心,哈尔滨150090

出　　处：《哈尔滨商业大学学报（自然科学版）》2014年第3期275-278,283,共5页Journal of Harbin University of Commerce：Natural Sciences Edition

基　　金：国家自然科学基金(51278146)

摘　　要：为了研究采新型可循环LWK调理剂的用量及粒径对污泥堆肥速率和氮素损失的影响,以城市污泥与新型LWK调理剂为原料进行为期25 d的堆肥试验,分析了堆肥过程中的物料二氧化碳产生速率、有机质含量(VS和DOC)、氨气挥发速率、氮素含量的变化规律.结果表明,m污泥∶m新型调理剂=1∶0.8时,堆体的CO2产生速率最高可达12.44 mg/(kg·VS·d),氨气挥发最少;在调理剂粒径筛选中,采用三个调理剂粒径水平20.0、30.0、40.0 mm的调理剂进行堆肥试验,三组试验氮素损失率分别为15.73%、6.90%、13.19%.使用平均粒径为30.8 mm的调理剂能够明显降低堆体的氮素损失.Sewage sludge and new recyclable LWK conditioner were composted to investigate the effects of the amount and the particle size of the new conditioner on the fermentation effi-ciency and nitrogen loss .The variation of temperature , respiration rate , organic content （VS）, dissolved organic carbon （DOC）, ammonia volatilization rate, nitrogen content and pH was determined during 25 days composting .The result showed that the production rate of CO2 reached a maximum of 12.44 mg/（ kg· VS· d）for the test group（msludge∶mconditioner =1∶0.8）.Three particle sizes conditioners （21,30,40 mm） were used in the sludge compost. The conditioner of 30 mm diameter reached a maximum temperature of 42 ℃.The nitrogen loss rates of the three group were 15.73%,6.90%,13.19%respectively.Using the condi-tioner at average particle size of 30 mm could reduce nitrogen loss obviously .

关 键 词：污泥堆肥 新型调理剂 使用量 粒径 氮素损失 

分 类 号：X703[环境科学与工程—环境工程]