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Establishment of Guidelines for Reclaimed Wastewater Quality Criteria

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The Committee on Reclaimed Wastewater Quality Criteria (Chairman: Visiting Prof. Mitsumi Kaneko Ritsumeikan University) established new criteria and considerations for the reuse of treated wastewater for toilet flushing, sprinkling, landscape use and recreational use based on hygienic safety, appeal and acceptance, and risk of facility malfunction. The new criteria and considerations were published as the Guidelines on Reclaimed Wastewater Quality Criteria from the Ministry of Land, Infrastructure and Transport in Japan. In the guidelines, new criteria was established for Escherichia coli (N.D. /100mL) with the exception of reuse as landscape water, thus replacing total coliform established in the former guidelines. New criteria were also established for treatment as well as turbidity, the index used for ensuring effective treatment. In addition, measures against loss of residual chlorine, cross connection, and accidental intake were established as considerations for treated wastewater reuse.

Document Type: Research Article


Publication date: January 1, 2005

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