TREATMENT OF LEATHER BOARD EFFLUENTS BY A COAGULATION FLOCCULATION PROCESS/

Authors
KHWAJA AR SINGH R TANDON SN
Citation
Ar. Khwaja et al., TREATMENT OF LEATHER BOARD EFFLUENTS BY A COAGULATION FLOCCULATION PROCESS/, Environmental technology, 19(8), 1998, pp. 857-860
Citations number
12
Categorie Soggetti
Environmental Sciences
Journal title
Environmental technology → ACNP
ISSN journal
09593330
Volume
19
Issue
8
Year of publication
1998
Pages
857 - 860
Database
ISI
SICI code
0959-3330(1998)19:8<857:TOLBEB>2.0.ZU;2-5
Abstract
A coagulation/flocculation process for the treatment of leather board effluents is described in which ferric chloride in conjunction with li me and alum is used as a coagulating/flocculating agent. The various f actors affecting coagulation/flocculation like coagulant ratio, coagul ant sequence, pH, temperature and retention time have been investigate d. The optimum coagulant dose has been determined. The process reduces the biochemical oxygen demand (BOD) by 80-90% and also chemical oxyge n demand (COD) by 80-85%.