Abstract:
: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.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Tripathi S,Tripathi BDdoi
10.1016/j.biortech.2011.04.035subject
Has Abstractpub_date
2011-07-01 00:00:00pages
6850-6issue
13eissn
0960-8524issn
1873-2976pii
S0960-8524(11)00529-3journal_volume
102pub_type
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