厭氧陶粒附著膜膨脹床啟動及運行實驗研究

Investigation on start-up and operation of an anaerobic attached microbial film expanded bed with ceramisites as biofilm carrier

摘要: 采用載體吸附法的固定化方式培養了高活性的厭氧生物膜顆粒,并研究了反應器的啟動運行、工藝特性及污泥特性等規律,探索用生物膜顆粒取代厭氧顆粒污泥的可行性,以緩解國內顆粒污泥供應不足的問題.實驗裝置采用厭氧附著膜膨脹床,投加人工配水,裸載體為陶粒(濕視密度1310kg·m^-3,平均粒徑0.32mm).實驗分初次啟動、二次啟動及穩定運行兩個階段進行,反應器僅需24d就可完成啟動,COD容積負荷最高達到18kg·m^-3·d^-1,相應的COD去除率在70%~80%之間.

Abstract: Anaerobic biofilm particles with high activity were developed by the immobilized method of carrier adsorption. The start-up and operation of the reactor, the processing characteristics and the sludge characteristics were investigated. The feasibility of granular sludge replaced by biofilm particles was discussed to resolve the shortage of granular sludge in China. The equipment was applied an anaerobic attached microbial film expanded bed, whose influent was artificial and whose bare carrier was ceramic media with a wet superficial density of 1 310 kg·m^-3 and an averaged meter of 0.32 mm. The results showed that start-up of the reactor was successful only in 24 d, the COD volumetric loading rate (OLR) was up to 18 kg·m^-3·d^-1 and the COD removal efficiency was 70%~80%.