包括固定化アナモックス担体による汚泥脱水ろ液の処理特性

概要

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A lab-scale reactor for the anaerobic ammonium-oxidizing (anammox) process was operated for the treatment of digester supernatant. In this study we used gel carriers with entrapped anammox bacteria to obtain a stable and high nitrogen removal performance. In continuous feeding tests, a stable nitrogen removal performance was observed and an average nitrogen conversion rate of 3.9 kg-N · m-3 · d-1 was obtained. A maximum nitrogen removal rate of 13.7 kg-N · m-3 · d-1 was confirmed in the high-loading test. After the stable nitrogen removal performance was observed, the operation of the reactor was stopped for one or three days and then restarted, in order to simulate a temporary process shutdown. The results of this test showed that our process can recover its performance immediately after a restart. The start-up period of this process was also evaluated under digester supernatant treatment. It was clearly shown that the anammox reactor using gel carriers can be started up within two months.
社団法人　日本水環境学会の論文
2009-08-10