武汉市青山区城市污水水质特征分析

Analysis on the Characteristics of Contaminants in Municipal Wastewater Discharged from Qingshan District,Wuhan

为了合理确定落步咀污水处理厂的工艺流程和设计参数 ,对武汉市青山区的城市污水水质进行了 7个周期的监测。其结果表明 :CODCr、BOD5、TN和 TP水质指标各月的逐时变化规律具有一定的相似性 ,一般 6 :0 0左右浓度处于低谷 ,14 :0 0左右达到峰值 ;污水中污染物浓度偏低 ;冬季污染物浓度较高 ;污水的可生化性较好 ;有机污染物中非溶解性部分占 70 %左右。根据污水水质特征 ,该厂可采用生物除磷脱氮工艺或化学强化一级后续生态处理单元的工艺。

In order to determine the process and parameters of Luobuzui Wastewater Treatment Plant(LWTP), the municipal wastewater discharged from Qingshan District, Wuhan has been monitored for 7 periods of time. The results show that the curves of the concentrations of COD Cr,BOD 5,TN and TP varied with the time of day. The concentration is generally the lowest at 6 am and the highest at 2 pm, the concentration is lower than the average municipal wastewater and higher in winter, the organics in the wastewater can be degraded easily and insoluble organic substances are about 70% of the total organic substances. According to the characteristics of contaminants in the wastewater, the biological treatment processes of removed nitrogen and phosphorus or the process of CEPT succeeding with stabilization ponds or the construction wetland may be applied to treat the wastewater in the plant.