the decline of algal density appeared earlier with the increase of SAP concentration. Under the SAP concentration of 19.3 and 25.8 mg L1, no significant difference in algal density was observed.
the decline of algal density appearedearlier with the increase of SAP concentration. Under theSAP concentration of 19.3 and 25.8 mg L1, no significant differencein algal density was observed.