浓度对组织捣碎机破解剩余污泥的影响研究  

Concentration influence to excess sludge disintegration by tissue triturator

作　　者：李现瑾 苑春莉[1] 潘雅虹[1] 由美雁[1] 谢元华[1] 韩进[1] 朱彤[1] 

机构地区：[1]东北大学机械工程与自动化学院,辽宁沈阳110004

出　　处：《节能》2014年第6期15-18,2,共4页Energy Conservation

基　　金：国家自然科学基金(项目编号:51178089);沈阳市科学技术计划项目(项目编号:F12-277-1-17);高等学校博士学科点专项科研基金(项目编号:20130042110009)

摘　　要：采用组织捣碎机对不同浓度剩余污泥进行了破解研究。研究结果表明:随着污泥浓度的增加,破解时间的延长,溶出COD、肽聚糖、核酸的量均显著增加;浓度为13882mg/L时,破解率较大,可达70%以上,粒径的变化也最大,且当破解时间超过10min时,破解的有机分子有重新化合的现象,污泥破解率增加较慢。因此,合适的破解时间,适当的污泥浓度,可以降低组织捣碎机的破解能耗,提高破解效率。This study considers that tissue triturator can efficiently disintegrate excess sludge,and sludge concentration has a great influence on effect of the disintegration.This results show that as follows:the amount of stripping COD,peptidoglycan and nucleic acid are significant increase with the increase of sludge concentration and the extension of disintegrating time.When the concentration is 8086 mg /L,the disintegrating rate which is more than 70 percent is larger.When the concentration is 18352 mg /L,the change of the grain size is the largest,and when disintegrating time is more than ten minters,sludge disintegrating rate increase lowly because the disintegrated organic molecules have the phenomenon of chemical combination again.As a result,the right disintegrating time and proper sludge concentration can reduce the disintegrating energy consumption of tissue triturator and improve the disintegrating efficiency.

关 键 词：剩余污泥 组织捣碎机 浓度 污泥破解 

分 类 号：X703[环境科学与工程—环境工程]