Modification of Grey Water Treatment Using Combination of Cascade Aeration and Biofiltration  

作　　者：Dheyaa Wajid Abbood Ayad Sleibi Mustafa Rasha Azeez Joudah 

机构地区：[1]Department of Civil, College of Engineering, Mustansiriya University, Baghdad 964, Iraq [2]Department of Civil, College of Engineering, Anbar University, Baghdad 964, Iraq [3]Department of Environment, College of Engineering, Mustansiriya University, Baghdad 964, lraq

出　　处：《Journal of Environmental Science and Engineering(B)》2013年第8期473-481,共9页环境科学与工程（B）

摘　　要：A combination of cascade aeration and biofiltration systems is one of the available ecological treatments to reduce the concentration of pollutants in grey water and resolve the problem of acute water crisis supply in Iraq. An experimental constructed grey water treatment system has been installed at AI-Mustansiriya University, College of Engineering during the period from January to December 2012. The performance of the treatment schemes has been evaluated by monitoring the quality of the raw grey water and effluent on these samples which are： pH, COD （chemical oxygen demand）, TSS （total suspended solids）, TDS （total dissolved solids）, PO43 （phosphates）, NO32 （nitrates）, NO （nitrites）, oils ＆ grease, NH3-N （ammonia-nitrogen） and some anions and cations. The average removal rate of COD was more than 60% that of NH3-N, NO3-N, NO2-N, TDS and TSS that were 55%-89%, 59%-74%, 79%-98%, 17%-52% and 51%-87%, respectively. Also the results indicate that the removal efficiency of ions concentrations such as Ca2＋, Mg2＋, Na＋, K＋ were 78%-96%, 73%-97%, 14%-47% and 44%-64%, respectively, while for cations such as SO42, Cl and PO43-, the removal efficiencies were 33%-79%, 27%-61% and 81%-99%, respectively. Finally oils ＆ grease was 79%-88%.

关 键 词：Grey water water rcuse BIOFILTRATION cascade aeration irrigation. 

分 类 号：X703[环境科学与工程—环境工程] TU991.03[建筑科学—市政工程]