Solar powered nanofiltration for drinking water production from fluoride-containing groundwater - A pilot study towards developing a sustainable and low-cost treatment plant.
J Environ Manage
; 231: 1263-1269, 2019 Feb 01.
Article
em En
| MEDLINE
| ID: mdl-30602251
ABSTRACT
The following paper summarizes the findings of a pilot study to develop a simple, low-cost, holistic water concept on fluoride removal from groundwater in rural communities of Tanzania; an ideal representative community for other areas in the world with similar problems. A small photovoltaic powered nanofiltration (NF) pilot plant was installed at a vocational training center in Boma Ng´ombe in northern Tanzania. The groundwater in this region is contaminated with fluoride at very high concentrations of up to 60â¯mg/L. The pilot plant was equipped with a single membrane module containing a spiral wound 4040 membrane NF90 of Dow Water & Process Solutions and was successfully operated over a nine-month period. The membrane removed more than 98% of fluoride. In fact, the fluoride concentration in the permeate was always less than 1â¯mg/L, which is in agreement with the WHO recommended standard (1.5â¯mg/L). Permeate was also used as weekly flush medium, so no chemical cleaning was required. Aside from permeate (drinking water) concentrate was also used for washing and flushing the toilets. In conclusion, the use of solar PV power (2.25 KWP) for approximately 2.5â¯h per day allowed producing about 240â¯L/h of permeate on average. Therefore, the sustainability of the process and suitability for the Tanzanian communities was proved.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
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Água Potável
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Água Subterrânea
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Purificação da Água
Tipo de estudo:
Health_economic_evaluation
País como assunto:
Africa
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article