Medicament suitable for treating fluorine-containing wastewater in semiconductor industry

The invention belongs to the technical field of wastewater treatment, and particularly relates to an agent suitable for treating fluorine-containing wastewater in the semiconductor industry, which comprises the following components in percentage by weight: 1-50% of calcium compound; 0.1% to 10% of t...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: MING JINYANG, ZENG XIANLEI
Format: Patent
Sprache:chi ; eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The invention belongs to the technical field of wastewater treatment, and particularly relates to an agent suitable for treating fluorine-containing wastewater in the semiconductor industry, which comprises the following components in percentage by weight: 1-50% of calcium compound; 0.1% to 10% of tripolyphosphate; 1%-10% of polyaluminum chloride; 1%-7% of phosphate; 0.1% to 10% of hexametaphosphate; and the balance of water. Compared with the prior art, the suspension liquid is prepared by adopting a novel inorganic dispersion suspension formula on the basis of fully considering the use advantages and disadvantages of lime and calcium chloride. According to the formula, on the premise that an existing process system is not changed in a fluorine-containing wastewater treatment system, calcium oxide and/or calcium hydroxide can be uniformly distributed in an aqueous solution in the form of extremely small particles without generating precipitates, so that the problems of precipitation and scaling caused by usi