Title:
METHOD AND DEVICE FOR RECOVERING SODIUM SULFIDE FROM LIME PIT TREATMENT CIRCULATING WATER FOR LEATHER TANNING WORK
Document Type and Number:
Japanese Patent JPS59146913
Kind Code:
A
Abstract:
Water from a tannery lime pit, containing sodium sulphide in solution, is purified for reuse by filtering through fossil flour, which is deposited as a filter aid on a rotary filter drum 4 operating under suction. Blade 10 advances to peel off a layer of the flour and retained solids. Tank 6 downstream of the filter drum separates the filtrate from the air. Multi-layer sieve 8 holds back liquid and foam from suction pump 9.
Inventors:
JIYOBUANNI TEIBARUDEI
Application Number:
JP22534483A
Publication Date:
August 23, 1984
Filing Date:
November 28, 1983
Export Citation:
Assignee:
JIYOBUANNI TEIBARUDEI
International Classes:
B01D37/00; C01B17/36; C02F1/28; C14C3/32; B01D33/06; (IPC1-7): B01D33/06; C01B17/36; C02F1/28; C14C3/32
Attorney, Agent or Firm:
Hideo Kodama (3 others)