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Automatic control system of sludge deep dewatering overall process and treatment method

An automatic control system, deep dewatering technology, applied in dewatering/drying/concentrating sludge treatment, comprehensive factory control, comprehensive factory control, etc. cost, stable and continuous optimized operation effect

Active Publication Date: 2013-02-20
SHENYANG INST OF AUTOMATION GUANGZHOU CHINESE ACAD OF SCI
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  • Abstract
  • Description
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Problems solved by technology

Affected by the raw water and the treatment process, the feed sludge is in a state of constant change, which makes the system operate in a poor working condition, resulting in an increase in the moisture content of the mud cake and a large consumption of chemicals. Therefore, a sludge dehydration method is urgently needed. The process control system ensures that the process is always running under optimal conditions

Method used

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  • Automatic control system of sludge deep dewatering overall process and treatment method
  • Automatic control system of sludge deep dewatering overall process and treatment method
  • Automatic control system of sludge deep dewatering overall process and treatment method

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Embodiment

[0030] The sludge deep dehydration treatment process of the present invention is as Figure 1.a , Figure 1.b As shown, it includes sludge pre-thickening part, sludge conditioning part, sludge deep dehydration part and mud cake conveying part. Process route description: The sludge from the secondary settling tank 1 is transported by the first sludge pump 2 into the gravity concentration tanks 3 and 4, and after 2-7 hours of precipitation in the gravity concentration tank, the sludge and water are separated. The actual liquid level detected by the liquid level gauge is compared with the set value to control the opening and closing of the water outlet electric valves 14~16, 17~19. The concentrated sludge is transported into the sludge conditioning tanks 5 and 6 by the second sludge pump 9, and the electric valves 20 and 21 control the discharge and transportation of the concentrated sludge, and the sludge pipes entering the conditioning tanks are installed with sludge Density m...

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Abstract

The invention discloses an automatic control system of a sludge deep dewatering overall process and a treatment method. The automatic control system comprises a sludge pre-concentration control system, a sludge tempering control system, a sludge deep dewatering control system and a mud cake transmitting control part. According to the invention, the whole sludge deep dewatering process is controlled on the basis of an optimization algorithm. The design concept of the automatic control system is as follows: the operation cost in a boundary range set by a user is always lowest and the total property is maintained optimal. The automatic control system has the advantages of providing the real-time monitoring for a sludge conditioning and deep dewatering integrated process, ensuring the lowest dose quantity and the maximum treating capacity in a set target range, enabling a mud cake to accord with the set requirement, and guaranteeing the stable and continuous optimal operation.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to an automatic control system and treatment method for the whole process of deep dewatering of sludge based on an optimization algorithm. Background technique [0002] With the improvement of the interception rate of urban sewage and industrial sewage and the improvement of sewage treatment efficiency, the total amount of sludge has increased rapidly. my country has built 1,214 sewage treatment plants in 2009, the sewage treatment rate reached 75.25%, and the total output of dry sludge was about 9 million tons. Domestic urban sewage plants generally use mechanical methods to dewater sludge, and the moisture content of filter cakes is generally 75-85%, which is far from meeting the latest environmental protection requirements. Sludge landfill and composting must have a moisture content of less than 60%. If the sewage plant transports sludge to the factory for storage purpo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12G05B19/418
CPCY02P90/02
Inventor 于广平唐嘉丽郭高飞苑明哲刘坚岳秀
Owner SHENYANG INST OF AUTOMATION GUANGZHOU CHINESE ACAD OF SCI
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