硫酸盐还原上向流污泥床（SRUSB）中厌氧污泥的颗粒化。
Granulation of anaerobic sludge in the sulfate-reducing up-flow sludge bed (SRUSB) of SANI(®) process.
机构信息
Department of Civil and Environmental Engineering, the Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China.
出版信息
Water Sci Technol. 2013;68(3):560-6. doi: 10.2166/wst.2013.182.
This study reports on anaerobic sludge granulation in a laboratory-scale sulfate-reducing up-flow sludge bed (SRUSB) in a novel sulfate reduction, autotrophic denitrification and nitrification integrated (SANI(®)) process for treatment of saline sewage. Granulation occurred in 30 d and reached full development in 90 d. The sulfate-reducing granules grew up to around 1 mm after 90 d with 21 mL/g SVI5 (sludge volume index measured after 5 min) and the biomass concentration reached 29 g/L after 4 months' operation. The reactor removed 89% chemical oxygen demand (COD) and reduced 75% sulfate within 1 h of hydraulic retention time, under a COD loading rate of up to 6.4 kg COD/(m(3) · d).
本研究报告了在一种新型硫酸盐还原自养反硝化硝化一体化（SANI®）工艺中，实验室规模硫酸盐还原上流式污泥床（SRUSB）中厌氧污泥颗粒化的情况，用于处理含盐污水。在 30 天内发生了颗粒化，90 天内达到完全发展。硫酸盐还原颗粒在 90 天后长到约 1 毫米，SVI5（5 分钟后测量的污泥体积指数）达到 21 mL/g，生物量浓度在 4 个月的运行后达到 29 g/L。在水力停留时间为 1 小时的条件下，COD 负荷率高达 6.4 kg COD/（m3·d）时，该反应器可去除 89%的化学需氧量（COD）并将 75%的硫酸盐还原。
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