摘要
在中国沿海一带,海产品废弃物贝壳多数进行废弃处理,成为潜在的环境隐患,对其进行废物资源化利用将是很好的选择。利用贝壳做填料,通过98d的小试研究,考察了厌氧固定膜反应器在18～25℃条件下的运行效果。在水力停留时间分别为4h、8h和12h的条件下,考察了反应器处于酸化段对污染物的处理效能。运行期间获得了较高的TP去除率,水力停留时间4h、8h和12h对应的平均COD去除率分别为55.0%,58.0%和58.9%,平均TP去除率分别为16.90%,25.95%和27.43%。在试验条件下,贝壳释放的碱度足以调节系统的pH值,水力停留时间8h和12h对应的出水pH值较进水增加11.6%和16.5%。试验结果表明,贝壳是一种理想的酸化反应器微生物附着和生长载体,从技术和经济角度,水力停留时间设定为8h较佳。
In China’s coastal area,most of the abandoned shells of seafood are processed as rubbish,which are becoming into potential environmental hazards;Waste utilization is a good choice.An experiment-scale anaerobic fixed film reactor（AFFR）with waste product from mariculture-shell as biomass carrier,treating domestic wastewater was conducted in 98 days at 18-25℃.The characteristics of substrate degradation levels in anaerobic acidogenesis were investigated under hydraulic retention times（HRTs）4 h,8 h and 12 h.Averaged COD removal efficiencies of 55.0%-58.9% were achieved during operation period.Averaged TP removal efficiencies of 16.90%,25.95% and 27.43% were achieved under HRTs 4 h,8 h and 12 h,individually.The alkalinity of shell releasing in anaerobic acidogenesis was sufficient to buffer the pH system.The effluent pH increase associated with the shell was observed obviously,getting averaged 11.6% and 16.5% of pH increasing rate under HRTs 8 h and 12 h.Preliminary technical and economic feasibility analysis indicates that shell is an ideal biomass carrier and 8 h is optimum HRT parameter for anaerobic reactor.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2010年第6期1425-1428,共4页
Journal of Jilin University：Earth Science Edition
基金
国家自然科学基金项目(50978048)
国家科技重大专项(2008ZX07207-009)
关键词
酸化
污水处理
生物膜反应器
除磷
贝壳填料
acidogenesis； wastewater treatment； fixed film reactor； phosphorus removal； shell carrier
