Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
Water Sci Technol. 2010;62(11):2564-70. doi: 10.2166/wst.2010.516.
The Sulfate Reduction, Autotrophic Denitrification, Nitrification Integrated (SANI) process has been specially designed to treat saline wastewater. In the process no biological excess sludge is produced. SANI process also has the added advantages of cost and footprint reduction when compared to traditional activated sludge processes. In the SANI pilot plant, the fecal coliform removal efficiency in the sulfate reducing up-flow sludge bed (SRUSB) was found to be 1.4 log, whereas that in the subsequent anoxic and aerobic reactors it was 0.6 and 0.2 log, respectively, leading to a relatively high overall coliform removal of 2.2 log. Sulfide was confirmed to be toxic to fecal coliform and the contact time between the sulfide produced and coliform in the SRUSB played an important role in the removal.
硫酸盐还原-自养反硝化-硝化一体化（SANI）工艺专门设计用于处理含盐废水。在该工艺中，不会产生生物过量污泥。与传统的活性污泥工艺相比，SANI 工艺还具有降低成本和占地面积的优势。在 SANI 中试厂中，硫酸盐还原上流污泥床（SRUSB）中的粪大肠菌群去除效率为 1.4 个对数，而后续缺氧和好氧反应器中的去除效率分别为 0.6 和 0.2 个对数，导致粪大肠菌群的总去除率相对较高，达到 2.2 个对数。证实了硫化物对粪大肠菌群具有毒性，并且在 SRUSB 中产生的硫化物与大肠菌群之间的接触时间在去除过程中起着重要作用。
