RECOVERING AND REMOVING METHOD AND RECOVERING AND REMOVING APPARATUS FOR OBJECT TO BE REMOVED IN WASTEWATER

PROBLEM TO BE SOLVED: To provide a method capable of recovering and removing an object to be removed in wastewater in good purity, and an apparatus used for it.SOLUTION: A method for recovering and removing an object to be removed in wastewater includes steps of: generating a hydroxide ion by immers...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: UMEZAWA HIROYUKI, TACHIKI ETSUJI
Format: Patent
Sprache:eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide a method capable of recovering and removing an object to be removed in wastewater in good purity, and an apparatus used for it.SOLUTION: A method for recovering and removing an object to be removed in wastewater includes steps of: generating a hydroxide ion by immersing at least a pair of electrodes into wastewater or filtered water for applying a voltage to the pair of electrodes; aggregating the object to be removed in the wastewater by bringing the hydroxide ion into contact with the wastewater to be treated containing the object to be removed; and filtering the aggregated object to be removed. An apparatus for recovering and removing an object to be removed in wastewater includes: an electrolytic cell having at least a pair of electrodes for generating an hydroxide ion by electrolyzing wastewater or filtered water; a water injection pump for sending the wastewater or filtered water containing the hydroxide ion to a treatment tank; the treatment tank connected to the water injection pump and capable of storing the wastewater to be treated containing the object to be removed; and a filtration membrane.