Curing agent for heavy-metal polluted bottom sludge

The invention discloses a curing agent for heavy-metal polluted bottom sludge. The curing agent comprises the following components by mass fraction: 20%-50% of cement, 40%-70% of coal ash, 5%-15% of bentonite and 3%-6% of additionally added agent. After the bottom sludge is treated by the curing age...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YAN MING, ZHOU YING, ZENG GUANGMING, HE JIANMIN, CHEN GUIQIU, LI HUANKE, GUAN SONG, SHANG CUI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TREATMENT OF NATURAL STONE TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	The invention discloses a curing agent for heavy-metal polluted bottom sludge. The curing agent comprises the following components by mass fraction: 20%-50% of cement, 40%-70% of coal ash, 5%-15% of bentonite and 3%-6% of additionally added agent. After the bottom sludge is treated by the curing agent, the strength of a cured object is high, and the pH of leaching agent and the leaching concentration of heavy metal are greatly reduced.