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Exposure assessment of treated greywater reused for irrigation

Vinnerås, Björn and Potivichayanon, Siraporn and Sittitoon, Nalin (2021). Exposure assessment of treated greywater reused for irrigation. Water Science and Technology: Water Supply. 21 , 4404-4417
[Research article]

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Abstract

The aim of study was to assess the risk of exposure of treated greywater reused for irrigation. It consisted of untreated and treated greywater quality analysis and heavy metal exposure assessment. After treatment with a local conventional stabilization pond, parameters such as BOD, COD, Zn, and Pb dropped to 35.63, 9.95, 0.011, and 0.001 mg/L, respectively. Total coliform and fecal coliform were decreased to 23,417 and 5,666 MPN/100 mL, respectively. These results showed almost all detected contaminants in treated greywater were minimized and did not exceed Thailand's standard and World Health Organization guidelines. After that, treated greywater was reused for irrigation. There were three vegetable plots: treated greywater, tap water with fertilizer, and tap water. There were seven edible plants, four leafy and three fruiting vegetables, cultivated in each plot. Zn, Pb, Cd, Cu, and Hg were detected depending on kind of plant; for example, the maximum concentration was found in leafy vegetables. However, the concentrations of contaminants did not exceed the Codex standard for contaminants and toxins in foods and Thailand's standard. Risk characterization showed no risk with a hazard quotient far less than 1. Therefore, treated greywater reuse could be considered to promote sustainable water management in community.

Authors/Creators:Vinnerås, Björn and Potivichayanon, Siraporn and Sittitoon, Nalin
Title:Exposure assessment of treated greywater reused for irrigation
Series Name/Journal:Water Science and Technology: Water Supply
Year of publishing :2021
Volume:21
Page range:4404-4417
Number of Pages:14
Publisher:IWA PUBLISHING
ISSN:1606-9749
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
Keywords:conventional stabilization pond, exposure assessment, greywater, greywater reuse, plant irrigation
URN:NBN:urn:nbn:se:slu:epsilon-p-113046
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113046
Additional ID:
Type of IDID
DOI10.2166/ws.2021.191
Web of Science (WoS)000663141100001
ID Code:26305
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Energy and Technology
Deposited By: SLUpub Connector
Deposited On:13 Dec 2021 15:25
Metadata Last Modified:13 Dec 2021 15:31

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