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通过对养猪场污水中部分化学指标的检测分析,判断养猪场污水排放是否达标,为环境监督管理提供一些参考依据。采集养猪场污水排放点及生活污水排放点共计5个样点的水样,测定水样中化学耗氧量(COD)、氨氮含量、p H值和氯化物含量(TDI)。测定数据与国家污水排放标准进行比较。结果表明,养猪场污水中化学耗氧量(COD)平均为52.0425mg/L>40mg/L(GB),严重超标;氨氮含量平均为5.6525mg/L>2mg/L(GB),严重超标;p H值与氯化物含量(TDI)(p H<8.5,氯化物≤250mg/L)均能达标。
Through the detection and analysis of some chemical indicators in the sewage of pig farms, it is determined whether the sewage discharge in pig farms is up to standard, which provides some reference for environmental supervision and management. A total of 5 sample water samples were collected from wastewater discharge points and domestic wastewater discharge points in pig farms to determine chemical oxygen demand (COD), ammonia nitrogen content, p H value, and chloride content (TDI) in water samples. Measured data and national wastewater discharge standards for comparison. The results showed that the average COD of piggery wastewater was 52.0425mg / L> 40mg / L (GB), which was seriously exceeded the standard. The average ammonia nitrogen content was 5.6525mg / L> 2mg / L (GB) ; p H value and chloride content (TDI) (p H <8.5, chloride ≤ 250 mg / L) can meet the standards.