Optimal selection and compounding of algae and phosphorus removal agents for high salinity landscape water
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Abstract:
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%.
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