浮石和碎石填料的厌氧过滤塔对果胶废水处理的比较

Comparison between a Pumice-Packed Anaerobic Filter and Macadam-Packed One for the Treatment of Pectin Waste-water

前言 长期以来,水果加工厂的废水均含有高浓度的BOD。采用生物厌氧过滤塔法进行废水的前处理,可以大大降低废水处理的总费用。 厌氧过滤塔是一种高效率的生物反应器。水中的有机物在反应器内被吸附在填料表面或游离在填料之间的微生物所分解。然而关于厌氧过滤塔填料种类对果胶等有机废水处理效果的影响等问题却很少为人所知。本文对浮石和碎石填料的上层排放式厌氧过滤塔原理、处理方法和能力进行了研究。

Efficiencies of a pumice-packed anaerobic filter and macadam-packed one in the treatment of pectin waste-water were compared in steady states. At 37℃, 1-8g/L of influent TOC,60h of apparent hydraulic retention time (HRT) , both reactors gave almost the same DOC-removal efficiencies. H owever, at 37℃,4g/L of influent TOC,20-30h of apparent HRT, the pumice-packed anaerobic filter gave higher DOC-removal efficiencies than the macadam-packed one. Nevertheless, no significant difference was observed in biomass concentration between both reactors.