Sewage treatment process control based on material balance based scheduling strong continuity slow process. Use in the sewage treatment process to a large number of valves, pumps, fans, and other mechanical equipment scraper, they are often timed to open based on certain procedures, time and logic, stop. The main control object is: between the grid, with a total pumping stations, grit chamber, biological reaction tank, sedimentation tank, chlorination, sludge treatment equipment, generator room.

Therefore, based on the entire factory automation field devices integrated automation of the main objectives focus not only deal with quality assurance of production, but more realistic is to reduce labor intensity, easy production management, improve the utilization of facilities and equipment, energy saving, increasing attrition effect. Urban sewage treatment plants in some developed countries are all exceptions are equipped with a high level of automation technology increasingly integrated plant-wide automation and control systems, and its effect is to significantly reduce significantly the number of its operating personnel and cost savings.

It is understood that the construction of the sewage treatment plant automation system, the cost usually accounts for 10% of the equipment, including control instrumentation, flowmeters, etc. These are included. The original sewage treatment plant management control is coarse control, after the automatic control system has been able to achieve precise control, to avoid a lot of mistakes, and can reduce energy consumption and reduce costs. Automation products in the field of wastewater treatment market prospects.

Due to the size of a modern sewage treatment plant is growing, so the degree of automation increasingly demanding. Sewage treatment automation control system should have automatic logic control, in-line process status display and recording parameters, run troubleshooting records, production report shows the records and other functions. Long cycle safety system can trouble-free operation with high reliability.

Sewage automation status quo

Our sewage treatment automation control late start after entering the 1990s, the sewage treatment plant began to introduce an automatic control system, but more direct introduction of foreign sets of automation equipment, automatic control system of domestic sewage treatment plant rarely used. Back in the 1970s, China's water industry began to apply automation technology, to the 1990s, automation, information technology in the water industry has been widespread attention. The past 20 years, China's water industry in automation technology and information technology applications has been considerable development and create a good economic and social benefits. Over the past two decades, automation technology and information technology has been widely used in the water industry. Especially in automation technology for gate automation of pumping stations, water and wastewater treatment plant SCADA system, city water supply dispatch system. As wireless communication technology, Internet technology and video technology, the development and popularization of the water industry has been basically achieved visualization. However, compared with international standards, China's automation and information technology has lagged behind, still in the overall level of 80-90 years abroad. Mainly reflected in the imbalance of development and application levels. Intelligent decision-making as the goal of information technology is relatively slow, information island phenomenon is still serious, automation technology and the lack of integration of information technology, a large number of process data are lying quietly scene, but did not play its due role.