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Sewage treatment system

A sewage treatment system and secondary treatment technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve the problems of large proportion of final treatment volume and large cost burden

Inactive Publication Date: 2006-03-15
YASKAWA DENKI KK
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  • Claims
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Problems solved by technology

The amount of final disposal of such sludge accounts for a large proportion of the final disposal amount of waste in the entire industry. In Japan, the residual capacity of the final disposal site may be extremely small, and it becomes a large cost burden.

Method used

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Embodiment Construction

[0039] In order to solve the above-mentioned problems, the present invention is constituted as follows.

[0040] The invention described in Scheme 1 is the following sewage treatment system, which includes a primary treatment process, a secondary treatment process, an oxygen supply blower, a sludge reforming device, a control device, a water quality simulator, and a data accumulation device; The process consists of an initial sedimentation tank that separates solids by simple physical operations such as sedimentation; the secondary treatment process consists of a biological reaction tank that uses microorganisms to adsorb and separate soluble dirty substances, and a final sedimentation tank that settles and separates activated sludge 1. A part of the sludge after sedimentation and separation is sent back to the sludge return line of the secondary biological reaction tank; the oxygen supply blower is used to supply oxygen to the biological reaction tank; the sludge reforming dev...

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Abstract

The invention obtains a sewage treatment system which can be automatically operated while properly setting the operation condition of reducing surplus sludge according to the condition change of water quality, water quantity, water temperature, and the like with improving water quality of treated water or without deteriorating the water quality, and optimizing the driving operation amount of an oxygen supply blower. The sewage treatment system comprises a water quality simulator 8 that calculates water quality by using an activated sludge model representing microorganism reactions in a biological reaction tank 2, a control device 9, and a data storage device 10. Easily biodegradable organic matter data of a sludge improvement device 7 are fetched into the water quality simulator 8, and the driving operation amount of the sludge improvement device 7 and the driving operation amount of the oxygen supply blower 3 for the biological reaction tank 2 are controlled from the results of water quality calculation by the water quality simulator 8.

Description

technical field [0001] The invention relates to a sewage treatment system, which can improve the quality of treated water or reduce the amount of excess sludge without reducing the quality of treated water in sewage treatment such as public sewage and industrial drainage, and can optimize the system at the same time Use, reduce processing costs, but also help reduce carbon dioxide emissions. Background technique [0002] Among the sewage treatment methods, the activated sludge method has high treatment performance, so it is widely used in various fields such as sewage treatment. Its purification principle utilizes the function of microorganisms to decompose and eliminate organic matter in sewage as food, so the microorganisms proliferate, and the result of this treatment is to produce excess sludge. The final disposal amount of such sludge accounts for a large proportion of the final disposal amount of industrial waste, and in Japan, the residual capacity of the final dispo...

Claims

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Application Information

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IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 池英昭平林和也德永一成
Owner YASKAWA DENKI KK
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