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Green-wall based treatment for reclamation of greywater: A new approach

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Title Green-wall based treatment for reclamation of greywater: A new approach
 
Creator R. Pophali, Girish
Bagde, Minakshi
Labhasetwar, Pawan
 
Subject Bio-filtration
Coconut peat
Green-wall based treatment
Greywater
LECA
Reclamation
Wastewater treatment
 
Description 271-280
This paper presents reclamation of greywater using "Green-wall treatment system". A Green-wall of capacity 100 L/d has
been implemented with the aim of greywater reclamation from a bathing water facility. The treatment system comprised of a
degreasing tank of size 0.9 m x 0.9 m x 0.3 m for oil & grease removal, followed by a Green-wall. Removal of oil & grease has
been done along with commonly observed pollutants in greywater, to prevent clogging of filler material. In stage-I studies,
Green-wall pots are filled with 4–10 mm Ø inert filler material LECA and in stage-II, LECA is mixed with locally available
coconut peat in equal proportion. Stage-I studies using LECA indicated that maximum achievable HRT is 12 h and the treated
greywater with respect to BOD does not comply with USEPA (2012) norms for landscape irrigation. In stage-II, the optimized
performance is observed at 16 &18 h HRT at hydraulic loading rate 67–70 L/m2/d, when compared with 14 and 12 h HRT.
Treated greywater quality met the prescribed permissible limits with respect to BOD, TSS and FC and is observed to be
innocuous in terms of the reuse options for agriculture and landscape irrigation. In stage-II, the BOD, COD, TSS and FC reduce
from 48 to 10 mg/L, 58 to 18 mg/L, 96 to 10 mg/L and 400 CFU/ 100 mL to below detectable limits, respectively, at 18 h HRT.
 
Date 2024-03-12T09:14:34Z
2024-03-12T09:14:34Z
2024-03
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/63567
https://doi.org/10.56042/ijct.v31i2.1632
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.31(2) [March 2024]