老给水厂在进行挖掘供水能力和提高供水水质时,可借助于曝气混凝法。该法是在混和反应时,对加入混凝剂的原水进行曝气,使混凝剂在原水中快速均匀地混和,并增大颗粒的碰撞次数,提高速度梯度G值,创造较好的混凝条件。通常,老给水厂混和反应设施的G值偏低,混凝条件不佳。曝气混凝所需设备十分简单,操作管理很方便,不论是已建的老给水厂,还是新建的给水厂,均可采用。因此,近几年来,此法在苏联得到广泛的使用。曝气混凝法是全苏 The old water supply plant can use the aeration coagulation method when carrying out the mining water supply capacity and improving the water quality. The method is to aerate the raw water added with the coagulant in the mixing reaction, so that the coagulant is quickly and uniformly mixed in the raw water, and the number of collisions of the particles is increased, the velocity gradient G value is increased, and better coagulation is created. condition. Usually, the G value of the mixed reaction facilities in the old water supply plant is low and the coagulation conditions are poor. The equipment required for aeration and coagulation is very simple and the operation and management are very convenient. Both the old water supply plant and the new water supply plant can be used. Therefore, this law has been widely used in the Soviet Union in recent years. Aeration coagulation method is all-S