科研之友
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摘要
Nonpoint pollutant source have influenced more strong than point pollutant source on the water quality of river. Therefore, the government to control nonpoint pollutant source should try to the effort. Long term monitoring is demanded at research on nonpoint pollutant source because the results of nonpoint pollutant source monitoring is very different through meteorological and geography characteristics such as rainfall, rainfall intensity, catchment area, slope of catchment, soil class and so on. Although, many researches on stormwater runoff characteristics of nonpoint pollutant source at the urban and rural area have been conducted, the research which focused on monitoring of vinyl greenhouse area has been insufficiency. This paper reported results of research that finds out stormwater runoff characteristics. At the first stage of stormwater runoff, the concentration of TSS was the highest because of first flush effect. And then the concentration of BOD and COD was increasing. After discharging stormwater runoff 1 and 2 h later, the concentration of TN and TP was increasing. Rainfall intensity has a great effect on outflow of pollutants. At the vinyl greenhouse, after about 15 mm of rainfall, stormwater runoff was observed. Average runoff ratio of monitoring was 0.53.
- 出版日期2017-2
