摘要
研究了污泥固体浓度和污泥类型对Cu、Pb和Zn生物沥滤的影响。结果表明,污泥固体浓度越高,重金属沥出效果越差;高固体浓度污泥pH值降低缓慢,其SO42-产生量明显高于低污泥浓度。低固体浓度污泥下,氮磷钾营养物质流失量比高固体浓度污泥明显增多。厌氧消化污泥和生污泥中重金属的生物沥滤效果差异不大,但厌氧消化污泥的肥效流失明显高于生污泥。
The effect of solid concentration and style of sewage sludge on bioleaching of copper, lead and zinc was investigated. It indicated that the removal efficiency of heavy metals and value of the decrease of pH became lower for the sludge with higher solid concentration, while the production of SO42- showed the contrary tendency. The loss of nutrient from the sludge with low concentration was obviously more than that from sludge with high concentration. There wasn't notable difference in the bioleaching efficiency between anaerobically digested sludge and raw sludge; however, the loss of nutrients from the former was higher than the latter.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2006年第12期62-64,共3页
Environmental Science & Technology
基金
浙江省重点科研项目(2004C23024)
浙江省科技计划重点项目(2005C23G2010170)
关键词
污泥
生物沥滤
重金属
固体浓度
肥效
sewage sludge
bioleaching
heavy metals
solid concentration
nutrients
