Case Study of Recycling By-product Salt Generated at the Leachate Desalting Treatment Facility

Ohno Akihisa, Ito Tomoyoshi

doi:10.3985/mcwmr.26.59

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Other Title

浸出水脱塩処理施設から発生する副生塩のリサイクル事例
シンシュツスイダツエンショリシセツカラハッセイスルフクセイエンノリサイクルジレイ

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Abstract

In Matsuyama City, we are currently working on extending the life of a general waste MSW landfill site that has been in service since 2003. Up to now, through recycling landfill waste and bringing in strict criteria for what is accepted, the site was expected to have a significantly long service life. However, now due to an increase in the proportion of incinerated ash found in the landfill waste, calcium and salt of leachate is eluting at higher concentrations than originally planned. The result of this is that the desalting capacity in the leachate desalting facility has been significantly impaired. In response, we plan to renew the leachate desalting facility, change the disposal process and introduce equipment that produces sodium hypochlorite in order to increase the efficiency of salt concentration and enhance the processing capacity of the facility. In addition, we are planning to use the sodium hypochlorite that is produced as a sterilizing agent at the sewer terminal treatment plant.

Journal

Material Cycles and Waste Management Research

Material Cycles and Waste Management Research 26 (1), 59-64, 2015-01-31

Japan Society of Material Cycles and Waste Management

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