4.8 Article

Efficiency of combined process of ozone and bio-filtration in the treatment of secondary effluent

Journal

BIORESOURCE TECHNOLOGY
Volume 102, Issue 13, Pages 6850-6856

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2011.04.035

Keywords

Biofiltration; Ozonation; Wastewater treatment; Macrophytes; Heavy metal toxicity

Funding

  1. CEST (Centre for Environmental Science and Technology), Banaras Hindu University, Varanasi, India

Ask authors/readers for more resources

The present work was aimed at studying the efficiency of the combined process of biofiltration with ozonation to improve the quality of secondary effluent. The secondary effluent from the Dinapur Sewage Treatment Plant Varanasi, India was used in this work. The process of biofiltration with the plant species of Eichornia crassipes and Lemna minor, at a flow rate of 262 ml min(-1) and plant density of 30 mg L(-1) for 48 h, in combination with the process of ozonation with ozone dose of 10 mg L(-1) and contact time of 5 min was applied. Results revealed that combined process was statistically most suitable for the highest degradation of physico-chemical and microbial parameters with improving BDOC value. The biofiltration process is able to remove highest percentage of toxic heavy metals from the secondary effluent without production of toxicity. This technique is highly recommendable for tropical wastewater where sewage is mixed with industrial effluents. (C) 2011 Elsevier Ltd. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available