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This study was aimed to study the effect of solution pH on the aid effect of compound bioflocculant (CBF) in dye wastewater treatment combined with widely used alum coagulants. The color removal performance of aluminum sulfate (AS) and polyaluminum chloride (PAC) was significantly improved with the aid of CBF. In addition, the effective pH range of alum salts was also broadened by CBF. Floc properties...
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