磷
厌氧消化
流化床
镁
化学
磷酸盐
播种机
强化生物除磷
废水
制浆造纸工业
磷酸镁
铵
废物管理
活性污泥
环境科学
环境工程
播种
农学
甲烷
工程类
有机化学
生物
作者
Kazuaki Shimamura,Hideyuki Ishikawa,Toshihiro Tanaka,Izumi Hirasawa
标识
DOI:10.2175/106143006x111899
摘要
The authors have been engaged in the development of a phosphorus recovery system capable of maintaining high recovery efficiencies, with the chemical cost suppressed. This time, they conducted demonstration tests of a fluidized bed magnesium ammonium phosphate reactor provided with a seeder reactor for the supernatant from anaerobic digestion using a pilot experimental plant with a wastewater treatment capacity of 20 m3/d. For the digestion supernatant with a phosphorus concentration of approximately 300 mg/L, the treated water phosphorus concentration was 10 to 25 mg/L, and the phosphorus recovery efficiency was more than 90%. Relative to the chemical cost in the case of magnesium chloride, the chemical cost in the case of magnesium hydroxide is approximately 40%. Thus, with the new system, it was possible to reduce the running cost while maintaining high recovery efficiencies.
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