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Monitoring efficacy of constructed wetland for treating domestic effluent – microbiological approach

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Relation http://oar.icrisat.org/9496/
http://dx.doi.org/10.18520/cs/v110/i9/1710-1715
10.18520/cs/v110/i9/1710-1715
 
Title Monitoring efficacy of constructed wetland for
treating domestic effluent – microbiological
approach
 
Creator Kaushal, M
Wani, S P
Patil, M D
Datta, A
 
Subject Soil Science
 
Description Water scarcity and elevated potential in wastewater
treatment in the last decades raise attention towards
constructed wetlands (CWs). The present study was
carried out to evaluate the efficacy of CW for faecal
coliform (FC) expulsion and to isolate and characterize
the microbial communities. Significant differences
were observed between influent and effluent microbial
counts of vegetated and control cells (without vegetation)
of wetland. FC reduction ranged from 64% to
81%; however, total bacterial, fungal and actinomycetes
average poll ranged from 66.67 X 105 cfu/g to
142.67 X 105 cfu/g, 1.67 X 102 cfu/g to 10.33 X 102 cfu/g
and 16.00 X 103 cfu/g to 53.33 X 103 cfu/g respectively,
isolated from vegetated and control cells. Results further
indicated that bacteria were most abundant, followed
by actinomycetes, whereas the number of fungi
was least among three groups of microbes, which
could be attributed to wide tolerance to the properties
of CW. Removal of FC was less apparent initially
compared to the later stages of operation, which is of
concern for long-term efficiency and stability of wetland.
Also, diversity of identified bacterial strains is
beneficial for growth and yield enhancement of agriculture crops. The results also demonstrate that CWs
are the key habitats for bioactive actinomycetes with
paramount medical, scientific and economic potential
significance globally in general and developing countries
like India in particular. Overall, backwash imparts
the baseline compilation of CWs for its
management for sustainable agriculture.
 
Publisher Indian Academy of Sciences
 
Date 2016-05-10
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/9496/1/1710.pdf
Kaushal, M and Wani, S P and Patil, M D and Datta, A (2016) Monitoring efficacy of constructed wetland for treating domestic effluent – microbiological approach. Current Science, 110 (09). pp. 1710-1715. ISSN 0011-3891