Author :
Li, Yongchao ; Li, Tielong ; Jin, Zhaohui ; Liu, Da Xi
Author_Institution :
Coll. of Environ. Sci. & Eng., NanKai Univ., Tianjin, China
Abstract :
Characterization of urban stormwater runoff was carried out in commercial, residential and cultural and educational zones during 2009 rainy season in Tianjin. The pH, DO, BOD5, COD, TOC, TSS, TN, TP, NH3-N, As, Pb, Zn, Cd, LAS and fecal coliforms in stormwater runoff were analyzed. The ranges of arithmetic mean concentration of COD, TSS, TN, LAS and fecal coliforms were 67-331 mg/L, 134-480 mg/L, 4.00-4.69 mg/L, 1.53-11.12 mg/L, 3.03×108-6.46×109 cfu/100mL respectively, depending on the type of land using . In conclusion, COD, TSS, TN, LAS and fecal coliforms were the major runoff pollutants. The sequence of surface runoff pollution was in the following order: commercial zone > residential zone > cultural and educational zone in terms of the major pollutants. On the meantime, the results indicated that the urban non-point source pollution played an important part in the decreasing of water quality after analyzing the changes of quality in receiving waters.
Keywords :
ammonia; arsenic; biochemistry; cadmium; floods; lead; nitrogen; oxygen; pH; phosphorus; surfactants; water pollution; water quality; zinc; As; Cd; NH3-N; O2; P; Pb; Zn; ammonia-nitrogen; anionic surfactant; arithmetic mean concentration; biochemical oxygen demand; commercial zone; cultural zone; educational zone; fecal coliforms; land using type; oxygen demand; pH; rainy season; residential zone; runoff pollutants; surface runoff pollution; total nitrogen; total phosphorus; total suspended solids; urban nonpoint source pollution; urban stormwater runoff; water quality; Cultural differences; Environmentally friendly manufacturing techniques; Industrial pollution; Land pollution; Sampling methods; Surface contamination; Surface treatment; Urban pollution; Water pollution; Zinc;
