FOR WASTE-WATER TREATMENT IN COKE PRODUCTION EQUIPMENT

PROBLEM TO BE SOLVED: To observe regulation value while keeping the cost of waste-water treatment low, by steam stripping a surplus gas liquor to reduce the content of ammonia in total waste water which flows into a waste-water treatment system within a prescribed range. SOLUTION: A surplus gas liqu...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	YAMASHITA TAKESHI, AKAI KAZUTAKA, AKIYAMA MASANORI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To observe regulation value while keeping the cost of waste-water treatment low, by steam stripping a surplus gas liquor to reduce the content of ammonia in total waste water which flows into a waste-water treatment system within a prescribed range. SOLUTION: A surplus gas liquor is supplied through a pipe 1, and a part of the liquor flows into a waste water storage tank 3 through a stripping column 2. Steam is supplied to the stripping column 2, ammonia in surplus gas liquor together with steam flows out from a column top, and waste water flows into a waste water treatment system including an activated sludge method. The concentration of ammonia in the waste water is measured with an azotometer and the ammonia content in the surplus gas liquor is measured with an azotometer and a flow meter. The amount of ammonia which should be removed from the stripping column 2 is calculated from these measured values. Thereby, steam stripping of a required minimum is carried out according to the amount of ammonia which should be removed from the waste water so that the amount of steam can be greatly reduced.