苏南某工业园印染废水水质特征分析

Characteristics of Printing and Dyeing Wastewater Quality from Industrial Park in the Ssouth Part of Jiangsu

选取苏南某工业园印染废水为研究对象,通过对废水排放量、pH、COD、NH3-N和TP的监测,研究了废水水质水量的变化规律。结果表明:园区印染废水具有COD值高、碱性大等特点,未达到排放标准。污染物浓度月变化:COD最小,TP次之,NH3-N最大。污染物排放量月变化:1～3月COD排放量急速上升,而4～12月COD排放量呈小幅波动、缓慢上升的趋势;1～2月TP排放量急速上升,3～12月TP排放量小幅波动;NH3-N全年的排放量波动较大。

In order to evaluate pollution condition of printing and dyeing wastewater, an industrial park in the south part of Jiangsu was investigated. Characteristic indices of printing and dyeing wastewater, including wastewater flow rate, pH, COD, NH3 - N and TP, were monitored. The results showed that printing and dyeing wastewater with high COD and pH cannot meet the emission standards, and the monthly variations of pollutant concentrations were expressed as NH3 - N 〉 TP 〉 COD. As to monthly pollutant emissions, it increased rapidly during January to March for COD, with an upward trend of slight fluctuations during April to December. It increased rapidly during January to February for TP, and showed slight fluctuations during March to December. It had drastic fluctuations all for NH3 - N over the year.