Efficient automatic control method for sludge deep dehydration

Abstract

The invention discloses an efficient automatic control method for sludge deep dehydration. The method comprises the following steps: a sludge preconcentration control step, a sludge hardening and tempering control step, a filter press control step and a mud cake transmission control step. The system is provided with two modes, namely automatic control and manual control. Under automatic control, the system operates automatically according to preset parameters. Under manual control, various links can be controlled and adjusted. Dehydrated sludge processed by the system is shaped as solidified clumps, has no percolate, has no obvious foul smell and is beneficial to further disposal such as landfill, burning, land utilization and the like. According to the invention, treatment efficiency and safety of the sludge dehydration system are enhanced, and manpower is saved.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to an automatic control system for the whole process of sludge deep dehydration. Background technique [0002] With the acceleration of urbanization and increasingly stringent environmental standards, investment in environmental governance has been greatly enhanced. In recent years, a large number of sewage treatment plants have been built in China, and the amount of sludge produced has increased year by year. By the end of 2011, 3,135 sewage treatment plants had been built nationwide, with a sewage treatment capacity of 136 million m 3 d -1 ; It is estimated that in the next five years, 27 million tons of sludge with a water content of 80% will be produced every year. Sludge is a kind of solid waste with complex composition. If it is not properly treated and disposed of, it will cause great environmental hazards. Since the sludge with high moisture content is difficult ...

AI Technical Summary

Problems solved by technology

This method incorporates parameter measurement into the control system in order to correct the dosing amount and running time. After the detection and feedback to the control system, and this method requires the establishment of a database for many complex parameters such as sludge properties and settling time, chemical dosage and sludge dewatering performance, equipment power consumption and chemical cost, which itself is a long time time and a large amount of data to support, but in actual operation, the sludge continuously enters the treatment system, and the physical and chemical properties of the sludge entering each section may be different. Real-time measurement and real-time adjustment may never have stable parameters. Even if it can be realized, the configuration The equipment requirements are also very high, and the damage to the equipment during operation is also very large

This method seems reasonable and feasible, but in fact it is less operable

Images