Experiment was carried out on the static settling and thickening of sludge water from water works, so as to provide basis and direction for the design of inclined plane thickener.

Methods In May and August 2004,collecting water samples from five different water treatment plants and seven different sites of trunks and tributaries in the Three Gorges reservoir;taking intracellular and extracellular microcystins pretreatment and using high performance liqid chromatography (HPLC) with photodiode array to MC-LR concentration d.

For the sludge water treatment project of Meiyuan Water Treatment Plant in Wuxi, the equalzing, thickening, conditioning, buffering polyacrylamine (PAM) dosing, and plate press for solid-liquid separation process was used, and PLC central control was also adopted.

With the water pollution becoming more and more serious, waterworks sludge treatment project has been added up to drinking water treatment system in order to achieve the zero discharge of waste water.

The paper introduces how the system of the automatic control of sludge treatment and the automatic control principles of different units achieve automatic control under PLC central control,which provides a useful basis and parameters for the design of the sys-tem in water plants.

Preparation and application of a novel environmentally friendly flocculant in tap water treatment;