印染污泥干燥过程中挥发分冷凝液的研究  

RESEARCH ON CONDENSATE DURING DRYING OF PRINTING AND DYEING SLUDGE

作　　者：黄黎明[1] 黄瑞敏[1] 周海滨[1] 刘欣 

机构地区：[1]华南理工大学环境科学与工程学院,广州510006 [2]广州市佳境水处理技术工程有限公司,广州510730

出　　处：《环境工程》2012年第1期79-82,共4页Environmental Engineering

基　　金：广东省节能减排重大专项(2008A080800020);广东省科技厅产学研项目(2007A090302077)

摘　　要：对某印染废水处理厂的污泥进行模拟干燥处理,以产生的挥发分冷凝液为研究对象来考察干燥温度和干燥程度对印染污泥干燥过程中污染物产生的影响。随着干燥温度的升高,挥发分冷凝液COD、NH3-N含量均升高,且在140℃至160℃时升高较快,分别为177～262 mg/L,100～130 mg/L,而pH较稳定。污泥含水率从65%干燥至5%时,挥发分冷凝液的COD、NH3-N含量升高不明显,分别为176～190 mg/L、85～105 mg/L。干燥温度比干燥程度更能影响印染污泥干燥过程中污染物的产生。A simulation drying was carried out for the sludge of a printing and dyeing wastewater treatment plant. Taking the condensate during the sludge drying as research object, it was examined the effect of drying temperature and moisture on pollutants during printing and dyeing sludge drying process. As the drying temperature increased, COD and NH3-N content in the condensate both increased. The increase was the most significant between 140 ℃ and 160 ℃, and respectively was from 177 mg/L to 262 mg/L,and 100 mg/L to 130 mg/L, and pH Was stable. As sludge moisture content from 65% to 5% , COD and NH3-N content in the condensate both increased less, and respectively incrensed from 176 mg/Lto 190 mg/L and 85 mg/L to 105 mg/L. The drying temperature has more influence than the degree of drying on pollutants as printing and dyeing sludge was drying.

关 键 词：印染污泥 干燥 污泥含水率 干燥冷凝液 

分 类 号：X791[环境科学与工程—环境工程]