我国北方城市污水处理厂二级处理出水的水质特性.pdf

30 4 Vol. 30,No.4 2009 4 ENVIRONMENTAL SCIENCE Apr. ,2009 1 2 1* 3 1 , , , , ( 1, 150090; 2 , 150010; 3. , 150076) :, . , COD COD 782%~ 865%,COD 101%~ 170%,COD 48%;TOC TOC 826%~ 866%;7554%~ 8993%;80%200~ 684 m ; :BODCOD 0195~ 0283, BDOCDOC0156~ 026. GCMS 5 ,58%35%. ,, ,, , . :; ;; : X7031: A: 0250-3301( 2009) 04-1099-06 Analysis of the Secondary Effluent of Municipal Wastewater in North China 1 2 1 3 1 WANG Shu-tao , WANG Hong , MA Jun , ZHANG Guang-de , LIU Hui-ling ( 1School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China; 2 Harbin Drainage Limited Company, Harbin 150010, China; 3Assessment Center of Environmental Engineering of Harbin, Harbin 150076, China) Abstract:The secondary effluent from a municipal sewage treatment plant was fractionated into three parts: the dissolved, the near-colloidal and the suspended. The variation of each composition was investigated individually during winter, spring andsummer. The fractionation study revealedthat the dissolved COD and DOC accounted for 782%-865% of total COD and 826%-866% of TOC, respectively. The molecular weight distribution (MWD) of the secondary effluent indicated that the organics with molecular weight (MW) 1000 accounted for 563%-628% of total organics. The organic components constituted 7554%-8993% ofthe mixture of suspended andnear-colloidalmatter. The size distribution of the particles showed that the particles ranging from 200 to 684 m constituted more than 80% of the total particles. The secondary effluent was relatively poor biodegradablewith only 0195-0283of BODCOD ratio and 0156-026 of BDOCDOC ratio. The 5 GCMS analysis detected 43 and 26 kinds of compound