Centre for Complex Fluid Processing (CCFP), School of Engineering, Swansea University, Talbot building, Singleton Park, Swansea, Wales SA2 8PP, UK.
Water Res. 2011 Nov 15;45(18):5977-86. doi: 10.1016/j.watres.2011.08.062. Epub 2011 Sep 7.
A fish farm sludge high in P (2-6% w/w as dry matter), Fe (5-7%), C (40-50%) and N (0.8-4%) was subjected to a series of acid leaching treatments using HCl, organic acids, and biologically mediated acid production. Additions of biodegradable organic acid solubilized heavy metals better than HCl, while additions of 1.5% w/v glucose followed by 7 day incubation stabilized the sludge releasing 92% P, 100% Fe. The use of homo-lactic Lactobacillus plantarum starter cultures were more effective than hetero-lactic Lactobacillus buchneri, solubilizing 81.9% P, 92.2% Fe, 93.0% Zn and 96.4% Ca in the sludge. The anaerobic sludge-glucose fermentation using L. plantarum produced a leached sludge that has low heavy metal and nutrient content while affording the recovery of nutrients. The potential of these methods for practical application are briefly discussed.
一个高磷（2-6%干物质）、铁（5-7%）、碳（40-50%）和氮（0.8-4%）的鱼塘污泥经过一系列盐酸、有机酸和生物介导的酸生产处理。可生物降解的有机酸的添加比 HCl 更能溶解重金属，而添加 1.5% w/v 葡萄糖并随后进行 7 天孵育可稳定污泥，释放 92%的 P 和 100%的 Fe。同型乳酸乳杆菌（Lactobacillus plantarum）启动培养物的使用比异型乳酸乳杆菌（Lactobacillus buchneri）更有效，可溶解污泥中 81.9%的 P、92.2%的 Fe、93.0%的 Zn 和 96.4%的 Ca。使用 L. plantarum 进行厌氧污泥-葡萄糖发酵产生了一种浸出污泥，其重金属和营养物含量较低，同时还能回收营养物。简要讨论了这些方法在实际应用中的潜力。
