摘要
以重庆某垃圾填埋场的渗滤液为研究对象,采用空化水射流空化降解垃圾渗滤液中复杂有机物,通过实验研究了泵压、围压、pH值和空化时间对空化处理垃圾渗滤液的影响规律,得出了空化水射流能降解有机物,从而显著提高渗滤液的可生化性的结论,同时确定了最佳空化条件是围压0.6 MPa,pH值9.0,空化处理时间90 min,泵压10 MPa。在最佳条件下空化处理垃圾渗滤液,COD和BOD5分别上升了124.8%和293.3%,BOD5/COD也提高了52.44%,色度降低,SS提高了191.5%,为后续处理创造有利条件。
Cavitating water jets were used to degrade complicated organic compounds sampled from landfill leachate from a sanitary landfill in Chongqing, P. R. China. The law of chemical oxygen demand （COD） and the impact of factors such as pumping pressure, confining pressure, cavitating time and pH were evaluated in the experiment. We concluded that a cavitating water jet can degrade complicated organic compounds. Cavitating water jets therefore can improve biological oxygen demand （BOD）5/COD. The optimal cavitating condition was also obtained： at a pH 9.0, confining pressure 0. 6MPa, cavitating time 90mins and pumping pressure 10MPa,the COD, BOD5 and BODS/COD increase to 124. 8%, 293. 3% and 52.44% respectively. Chromaticity decreases while SS increase to 191. 5%. These changes create good conditions for subsequent treatment.
出处
《重庆建筑大学学报》
EI
CSCD
北大核心
2008年第6期111-115,共5页
Journal of Chongqing Jianzhu University
基金
国家自然科学基金委专项创新研究群体基金项目(50621403)
国家自然科学基金项目(50604019)
新世纪优秀人才支持计划(NCET-06-07677)
关键词
空化水射流
空化
垃圾渗滤液
cavitating water jets
cavitations
landfill leachate
