Drinking water quality assessment and corrosion mitigation in the hospital water supply system of Chacas Village (Peru)

Avaliação de qualidade da água potável e diminuição da corrosão no sistema de fornecimento de água do hospital da vila Chacas (Peru)

Abstracts

Rural hospitals in developing countries often lack appropriate water treatments to assure their water needs. In these facilities, due to water different uses and its use with medical equipment, water quality problems can cause very hazardous situations. In particular, corrosion of water distribution systems is a common issue that can cause unwanted changes in water quality and failures of the distribution system's pipes. These considerations suggest that a complete monitoring program and water treatments to control and guarantee the water quality would be required in each health-care facility. This study assessed the quality of the water at the rural hospital of Chacas (Peru) as measured via specific physical-chemical and microbiological parameters. The results show that the chemical and microbiological qualities of the water generally worsen from catchment to the hospital's taps. Moreover, this work investigated the effects of a dolomite limestone filter installed to adjust the quality of the water distributed at the hospital and thereby mitigate the water's corrosiveness. Corrosion indices were calculated to provide useful information on the water's corrosiveness and positive results were obtained in reducing corrosiveness after the installation of the dolomite filter.

Langelier saturation index (LSI); Ryznar stability index (RSI); dolomia filter

Muitas vezes, os hospitais rurais nos países em desenvolvimento carecem de tratamento adequado de água para assegurar o fornecimento. Nestas instalações, devido aos diferentes usos e aos equipamentos médicos, problemas na qualidade da água podem causar graves situações de risco. Em particular, a corrosão do sistema de distribuição de agua é um problema comum que pode causar alterações indesejadas na qualidade da água e falhas nos tubos do sistema de distribuição. Estas considerações sugerem que um programa de monitoramento completo e de tratamento de água para controlar e garantir a qualidade seria necessário em cada unidade de saúde. Este estudo descreve a avaliação da qualidade da água fornecida e distribuída no hospital rural de Chacas (Peru), com medidas de parâmetros físico‑químicos e microbiológicos específicos. Os resultados mostram que a qualidade química e microbiológica da água geralmente piora da captação às torneiras do hospital. Além disso, este trabalho investigou o efeito do filtro de calcário dolomita instalado para diminuir a corrosividade da água e ajuste da qualidade da água distribuída no hospital. Os índices de corrosão foram calculados para fornecer informações úteis sobre a corrosividade da água e os resultados foram positivos para redução da corrosividade da água após a instalação do filtro dolomia.

índice de saturação Langelier (LSI); índice de estabilidade Ryznar (RSI); filtro dolomita

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Publication Dates

• Publication in this collection
  17 Sept 2014
• Date of issue
  Sept 2014

History

• Accepted
  20 July 2014
• Received
  30 May 2014