Sino Forest Applied Research Center for Pearl River Delta Environment, Hong Kong Baptist University, Hong Kong Special Administrative Region.
Sino Forest Applied Research Center for Pearl River Delta Environment, Hong Kong Baptist University, Hong Kong Special Administrative Region; Department of Environmental Science, Periyar University, Salem 636011, India.
Bioresour Technol. 2016 Oct;217:179-85. doi: 10.1016/j.biortech.2016.02.113. Epub 2016 Mar 3.
Biogenic flocculant produced by Acidithiobacillus ferrooxidans was used for sludge conditioning to improve the dewaterability of anaerobically-digested sludge, and its efficiency was compared with commercial cationic polyacrylamide (PAM). Biogenic flocculant rapidly reduced the pH and increased the oxidation-reduction potential of sludge. Capillary suction time (CST) and specific resistant to filtration (SRF) of sludge was decreased by 74% and 89%, respectively, compared with control; and the reductions were 58% CST and 67% SRF higher when compared with commercial polymer. Biogenic treatment improved the sludge calorific value by 13%, and also reduced the unpleasant odor. The small-scale mechanical filter press study showed that the biogenic flocculant can reduce the moisture content of sludge to 70%, and improve the clarity of the filtrate in terms of removal of total suspended solids and total dissolved solids when compared with synthetic polymer treatment.
由嗜酸氧化亚铁硫杆菌产生的生物絮凝剂用于污泥调理，以改善厌氧消化污泥的脱水性能，并将其效率与商业阳离子聚丙烯酰胺（PAM）进行了比较。生物絮凝剂可迅速降低污泥的 pH 值并增加氧化还原电位。与对照相比，污泥的毛细吸水时间（CST）和比过滤阻力（SRF）分别降低了 74%和 89%；与商业聚合物相比，CST 降低了 58%，SRF 降低了 67%。生物处理可提高污泥热值 13%，还可减少恶臭。小型机械压滤机研究表明，与合成聚合物处理相比，生物絮凝剂可将污泥的含水量降低至 70%，并提高滤液的澄清度，去除总悬浮固体和总溶解固体。
