Design and Implementation of Sewage Treatment Control System

The performance of the sewage treatment as one of the important equipments in ships has a direct impact on the entire power installation and ship performance. The performance of the sewage treatment is a kind of Ship antipollution devices which can treat sewage such as bath water, hygienic-water and cooking water. In this way, it could make the wastewater reach the discharge standard. This paper describes the optimized design of the new disposal equipment of domestic sewage. In the further research of liquid level control and automatic control program, it posed the new disposal equipment of domestic sewage which takes SIEMENS S7-200 as the control core, integrated liquid level difference sensor, engine room extended alarm combination of monitoring and alarm means, and used PROFIBUS-DP network to achieve real-time communication between modules combined with existing equipment. The experiments show that the performance is steady, and the operation control is more easy and simple, so it reaches the expected purpose