Record Details

Evaluating wastewater treatment efficiency of two field scale subsurface flow constructed wetlands

OAR@ICRISAT

View Archive Info
 
 
Field Value
 
Relation http://oar.icrisat.org/9500/
http://dx.doi.org/10.18520/cs/v110/i9/1764-1772
10.18520/cs/v110/i9/1764-1772
 
Title Evaluating wastewater treatment efficiency of two field scale subsurface flow constructed wetlands
 
Creator Tilak, A S
Wani, S P
Patil, M D
Datta, A
 
Subject Soil Science
 
Description designed to treat a variety of industrial, domestic and
agricultural waste waters. We study here the efficiency
of domestic waste water treatment by two field scale
subsurface flow CWs under different hydraulic loading
rates (HLRs). Each CW had inlet and outlet
chamber for waste water collection with Pistia stratiotes
(water lettuce), two treatment sections consisting of
sand and gravel media and four plant species Typha
latifolia (Broadleaf cattail) and Cymbopogon citratus
(lemon grass – first CW) and (Pennisetum purpureum
schum and Pennisetum americanum L (Hybrid napier)
and Urochloa mutica (Paragrass – second CW). The
wastewater source was from a residential urban colony.
The HLRs for the first and second CW for a
three-month period averaged 4.45 cm/day and
5.77 cm/day respectively. The CW was monitored for
quality of wastewater inflows and outflows and nutrient
accumulation in plants and sand media. Results
showed that the chemical oxygen demand (COD), total
suspended solids (TSS), total nitrogen and total phosphate
removals in the first and second CW over a
three-month period averaged 42%, 74%, 39% and
41% and 34%, 82%, 14% and 35% respectively. Both
the CWs showed similar rates of TSS removal irrespective
of the type of wetland plant species. Over the
three-month period, average COD, total nitrogen and
the phosphate removals were greater in the first CW
compared to the second CW. These results confirm
the efficacy of field scale subsurface flow CWs to
improve the quality of domestic waste water in rural
communities of developing countries like India.
 
Publisher Indian Academy of Sciences
 
Date 2016-05-10
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/9500/1/1764.pdf
Tilak, A S and Wani, S P and Patil, M D and Datta, A (2016) Evaluating wastewater treatment efficiency of two field scale subsurface flow constructed wetlands. Current Science, 110 (09). pp. 1764-1772. ISSN 0011-3891