The Performance of a Three Phase Fluidized Bed Biofilm Reactor in Treatment of Sugar Factory Wastewater

Abstract

The performance of a three phase fluidized bed biofilm reactor used to treat cane sugar wastewater has been investigated. Experimental results showed that, the continuous bioprocess treated the real wastewater of sugar cane factories under the condition of maintaining the hydraulic retention time (HRT) at 3~3.5 h, the maximum removal percentage of COD and NH4–N could reach to 91.38% and 92.39% respectively, and the effluent COD and NH4–N were lower than 120 and 10 mg /L for 40 days, which had achieved the national primary discharge standard of PR China. And when the organic loading rate (OLR) was increased from 2.3 kgCOD/m3•d to 5.1kgCOD/m3•d, the reactor can achieve the treatment without affecting its performance, and the reactor had high operation flexibility and the ability to resist shock loading.