Rodríguez L, Villaseñor J, Buendía I M, Fernández F J
University of Castilla-La Mancha, ITQUIMA, Chemical Engineering Department, Avenida Camilo José Cela S/N, 13071 Ciudad Real, Spain.
Water Sci Technol. 2007;56(2):95-102. doi: 10.2166/wst.2007.477.
The aim of this study was to evaluate the feasibility of the re-use of the winery wastewater to enhance the biological nutrient removal (BNR) process. In batch experiments it was observed that the addition of winery wastewater mainly enhanced the nitrogen removal process because of the high denitrification potential (DNP), of about 130 mg N/g COD, of the contained substrates. This value is very similar to that obtained by using pure organic substrates such as acetate. The addition of winery wastewater did not significantly affect either phosphorus or COD removal processes. Based on the experimental results obtained, the optimum dosage to remove each mg of N-NO3 was determined, being a value of 6.7 mg COD/mg N-NO3. Because of the good properties of the winery wastewater to enhance the nitrogen removal, the viability of its continuous addition in an activated sludge pilot-scale plant for BNR was studied. Dosing the winery wastewater to the pilot plant a significant increase in the nitrogen removal was detected, from 58 to 75%. The COD removal was slightly increased, from 89 to 95%, and the phosphorus removal remained constant.
本研究的目的是评估再利用酒厂废水以强化生物营养物去除（BNR）工艺的可行性。在批次实验中观察到，添加酒厂废水主要增强了氮去除过程，这是由于所含底物具有约130 mg N/g COD的高反硝化潜力（DNP）。该值与使用纯有机底物（如乙酸盐）所获得的值非常相似。添加酒厂废水对磷或COD去除过程均无显著影响。基于所获得的实验结果，确定了去除每毫克N-NO₃的最佳投加量，为6.7 mg COD/mg N-NO₃。由于酒厂废水在增强氮去除方面具有良好特性，因此研究了在活性污泥中试规模工厂中连续添加该废水用于BNR的可行性。向中试工厂投加酒厂废水后，检测到氮去除率显著提高，从58%提高到75%。COD去除率略有提高，从89%提高到95%，而磷去除率保持不变。
