pH冲击对磁性微氧活性污泥理化特性的影响

Effect of pH Shock on Physicochemical Characteristics of Magnetic Micro-Aerobic Activated Sludge

研究了pH冲击对处理低负荷葡萄糖废水的磁性微氧活性污泥理化特性的影响。在pH=6.0和9.0的条件下对添加磁粉和无磁粉反应器微氧活性污泥进行15d的冲击,而后调整pH=7.5进行5d的恢复实验。对pH冲击下污泥理化指标SVI(污泥指数)、MLSS(污泥浓度)以及絮凝性能的变化情况进行考察,结果表明有磁粉反应器的各项指标均优于无磁粉反应器。经过5d的恢复实验,添加磁粉反应器污泥的理化指标均能恢复到接近初始值,而无磁粉反应器性能难以恢复到接近初始值。

The effect of pH shock on the physicochemical characteristics of the magnetic micro-aerobic activated sludge used to deal with low load glucose wastewater was studied. The micro-aerobic activated sludges in the reactor with magnetic powder and the reactor without magnetic powder, were shocked under the condition of pH=6.0 and 9.0 for 15 d. Then the recovery experiments were taken at pH = 7.5 for 5 d. After pH shock, SVI, MLSS and the flocculation performance of the sludge were analyzed. And the results showed that all the indicators of the reactors with magnetic powder were su- perior to that of the reactor without magnetic powder. After recovery experiments for 5 d, the physicochemical indicators of the sludge that was in the reactors with magnetic powder could recovered to the original value, but the indicators of the sludge that was in the reactors without magnetic powder could not recovered to the original value. K