The monitoring and control system of wastewater treatment process consists of four parts: model, sensor, local regulator and upper monitoring strategy. Among them, the sensor is the weakest, but also the most important and basic part of the monitoring and control system of the wastewater treatment plant. Increasingly stringent sewage discharge standards have led to the complexity of sewage treatment processes and equipment, the performance of sensors used for monitoring and control of sewage treatment processes has also put forward higher requirements, promoting the development of sensor technology in the field of wastewater treatment, and a number of new types of sensors suitable for wastewater treatment processes have been introduced. Wastewater treatment process is a complex biochemical reaction process, involving a wide range of instrumentation, most of the sensors are unique to the sewage treatment process, were applied to different occasions, reflecting one or more specific variables in the state of information changes.
Shanghai Yuko electromechanical sewage treatment process is generally designed from the mechanical treatment, biochemical treatment and chemical treatment of three aspects, which involves the liquid phase, solid phase, gas phase of the three material components. Monitoring these phases of the instrument can be simply divided into two categories of general-purpose and special.
The general-purpose measuring instruments include sensors for temperature, pressure, level, flow, PH meter value, conductivity, suspended solids, and so on.