| 摘要 |
PROBLEM TO BE SOLVED: To solve problems of a conventional flocculant that the flocculant does not have sufficient flocculation efficiency in spite of its aim to flocculate and separate suspended solid (SS) in wastewater, that the flocculant has pH dependency to require pH adjustment in some cases for treatment, and accordingly, require pH adjustment again in some cases at the time of releasing the separated water after flocculation treatment of SS in wastewater, and that the sludge left by flocculating and separating SS by the flocculant and dewatering it is easy to be dissolved in water and heavy metals are not immobilized and dissolved again. SOLUTION: This purification agent for turbid wastewater and sludge is an agent containing a crystalline aluminosilicate salt, a sodium salt, an aluminum salt, and a metal oxide, or the purification agent for turned wastewater and sludge is an agent containing a zeolite, aluminum potassium sulfate, sodium carbonate, silicon dioxide, aluminum oxide, calcium oxide, iron oxide and magnesium oxide.
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