Goltara A, Martinez J, Mendez R
Chemical Engineering Department, Institute of Technology, Campus Sur, University of Santiago de Compostela, Santiago de Compostela E-15782, Spain.
Water Sci Technol. 2003;48(1):207-14.
A 3.5 L Membrane Sequencing Batch Reactor (MSBR) was used for the treatment of a wastewater coming from the beamhouse section of a tannery. The wastewater, produced after the oxidation of sulphide compounds, contained average COD and ammonium concentrations of 550 and 90 mg/L respectively. The system was operated for a period of 150 days, with no sludge removal during the whole period of operation. The biomass concentration inside the reactor varied considerably, with maximum values close to 10 g/L at the end of operation. Low biomass yield values were achieved probably due to the low feed/microorganisms (F/M) ratio. An important accumulation of organic matter in the reactor was noticed, although the COD effluent was not affected due to the permeation through the membrane. The nature of this organic matter is finally discussed. Removal efficiencies close to 100% in ammonium and 90% in COD were achieved and the TN removal efficiency ranged from 60 to 90%.
一个3.5升的膜序批式反应器（MSBR）用于处理来自制革厂鞣制工段的废水。该废水在硫化物化合物氧化后产生，平均化学需氧量（COD）和铵浓度分别为550毫克/升和90毫克/升。该系统运行了150天，在整个运行期间没有排泥。反应器内的生物量浓度变化很大，运行结束时最大值接近10克/升。可能由于低的进料/微生物（F/M）比，实现了低生物量产率值。尽管由于通过膜的渗透，出水COD未受影响，但注意到反应器中有重要的有机物积累。最后讨论了这种有机物的性质。铵的去除效率接近100%，COD的去除效率为90%，总氮（TN）的去除效率在60%至90%之间。
