One of the most common operating problems in activated sludge wastewater treatment plants is incidence of scum and foaming.

• 在城市污水处理厂活性污泥法工艺的运行中,生物泡沫与浮渣(简称生物浮沫)和活性污泥膨胀一样,是困扰运行管理的重要问题。