人工湿地系统处理化机浆废水小试研究

针对某化机浆厂 SBR 生化出水,采用小试规模的模拟人工湿地系统研究了不同基质和有无植物对废水中污染物的去除效果.选取了生物陶粒、无烟煤和页岩三种基质,并且对其进行两两组合,同时利用处理效果最好的基质生物陶粒构建了有无植物(风车草)的对照组湿地.研究表明:(1)三种不同基质对污水有不同的处理效果,其中生物陶粒对 COD...

The small-scale experiments of the utilization of Constructed Wetland in the Treatment of Pulp and Paper Wastewater

The small-scale constructed wetlands with different substrates and plants were built to treat chemimechanical pulping wastewater.The anthracite,shale and biological ceramsite were selected as substrates and they were chosen to have a pairwise testing.Cyperus alternifolius was planted in one wetland with the best substrate as a comparsion.The results show that：（1）the different substrates have the different removal rates for the wastewater：the biological ceramsite is the best one for the COD removal,can reach 27.4%;the anthracite is best for TP removal,is 74.0%;the shale is best for chroma,is 28.9%.（2）comparing to the single substrate,the paiswise testing shows the group of biological ceramsite and anthracite has the best result on COD and TP,the average removal are 31.5% and 77.0%respectively.（3）when Cyperus alternifolius was planted with biological ceramsite,the removal rates for COD、TP and chroma are9.3%、30.0% and 15.9%respectively higher than wetland without plant.The results indicate that plant plays a major role in treating water in these constructed wetlands.