| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an economical and efficient wastewater treatment agent uniformly reducing concentrations of fluorine, boron, arsenic and selenium that are toxic substances contained in wastewater to concentrations less than waste water quality standards, specifically, to provide the wastewater treatment agent capable of insolubilizing the toxic substances in a short time even when the plurality of toxic substances coexist in the wastewater, and suppressing the re-elution of the toxic substances after the insolubilization. <P>SOLUTION: This wastewater treatment agent includes calcium aluminate, aluminum sulphate, lime and an alkali metal phosphate. <P>COPYRIGHT: (C)2013,JPO&INPIT |
