The water treatment field involves a very wide range of applications, constituting a huge industrial application. There is many key equipment involved in the water treatment system. If a failure occurs, it will directly affect normal production, bring direct losses to water treatment enterprises, and indirect losses to related users.

Water treatment equipment can be divided into sewage treatment equipment, raw water treatment equipment, water purification equipment, filtration equipment, ultra-pure water equipment, etc., involving clean water transfer pumps, vertical surface aerators, aeration tank induced fans, sludge pumps, sewage pumps, sludge mixers, sludge discharge pumps, reverse osmosis high-pressure pumps, reverse osmosis circulating pumps and other moving equipment.

The above equipment is prone to failures such as bearing damage, rotor misalignment, rotor imbalance, impeller wear, gear damage, etc. Long-term and accurate condition monitoring and predictive maintenance of key equipment in the water treatment system are of great significance to improve the safety and stability of the water treatment system.