高盐景观水体除磷、除藻药剂优选及复配

淡水盐碱化是全球范围内面临的一个新兴环境问题,其中城镇内人工景观水体表现尤为突出。高盐景观水体盐度大,导致植物不易生长,藻类逐渐成为优势种群,影响观感。通过絮凝法同时除磷、除藻,使景观水体恢复藻类爆发前的状态。研究11种絮凝药剂对TP、Chla(叶绿素a)的去除效率,其中PAC除磷效果很好,CPAM可以有效除藻。经过浓度梯度优选实验,优选出PAC和CPAM的最优投加浓度,并进行复配试验。复配结果为当PAC投加浓度10mg/L、CPAM投加浓度3mg/L时组合除磷、除藻效果最佳,TP平均去除率为92.52%,Chla平均去除率为98.32%。

Optimal selection and compounding of algae and phosphorus removal agents for high salinity landscape water

Freshwater salinization is an emerging environmental problem worldwide.It is especially prominent in the artificial landscape water in urban areas.High salinity landscape water body makes it hard for plants to grow,so that the algae gradually becomes the dominant population,affecting the beauty of the water.In this study,we used the flocculation method to simultaneously remove phosphorus and algae,so as to recover the landscape water body to the state before the algae bloom.In this paper,we studied the removal efficiency of 11 flocculants on TP and Chla (chlorophyll a).Among them,PAC showed good effect on TP removal,and CPAM could effectively remove algae.After the concentration gradient optimization experiment,we selected the optimal dosage of PAC and CPAM,and performed compounding experiment.The results of the compounding were as follows:when PAC was 10 mg/L and CPASM was 3 mg/L,the combination had the best removal effect.The average removal rate of TP was 92-52%,and that of Chla was 98-32%.