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Control device and method for treating sludge digestion liquid through sludge-fermentation-coupled denitrification

A sludge digestion liquid and control device technology, applied in water/sludge/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., to improve control efficiency, avoid insufficient aeration, and simple settings Effect

Active Publication Date: 2013-11-06
彭永臻
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Optimize the control means to ensure the denitrification effect of the system and solve the limitations of the existing process capacity

Method used

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  • Control device and method for treating sludge digestion liquid through sludge-fermentation-coupled denitrification
  • Control device and method for treating sludge digestion liquid through sludge-fermentation-coupled denitrification

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Embodiment Construction

[0022] In conjunction with the accompanying drawings and embodiments, the patent application is further described: as figure 1As shown, the sludge fermentation coupled denitrification device of the present invention comprises a raw water tank 1 for sludge dehydration liquid, a nitrification reactor, a sedimentation tank 8, and sludge fermentation coupled denitrification reactors 9-10. Raw water tank 1 is 400L, and the nitrification reactor is a single corridor reactor with plexiglass texture, with an effective volume of 36L, of which the volume of the anoxic reactor is 4L, and the volume of the aerobic reactor is 8L. The aerobic reactor provides aeration through an air compressor, and the aeration head adopts a gravel aeration head. In order to avoid back mixing between the aerobic reactors, each reactor is separated by a partition, and a connecting pipe is arranged at a suitable position on the partition. The effective volume of the reaction zone 9 of the sludge fermentation...

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Abstract

The invention discloses a control method and a control method for treating sludge digestion liquid through sludge-fermentation-coupled denitrification, and belongs to the technical fields of high-ammonia-nitrogenous wastewater treatment and primary sludge biochemical treatment. The device is provided with a raw water tank, a sludge-fermentation-coupled denitrification reactor, a sedimentation tank and a sludge storage tank; and through oxide resume power (ORP) / pH sensors arranged in an aerobic reaction area and a fermentation-coupled denitrification reaction area, the aeration amount supply, the effluent backflow ratio and the dosing frequency and quality of primary sludge are optimally controlled. The invention is suitable for optimally controlling the treatment of the sludge digestion liquid by dosing the primary sludge serving as a denitrification carbon source, and can save carbon sources and improve denitrification efficiency. In addition, the control strategy has the advantages of simple operation and obvious effect.

Description

technical field [0001] The invention relates to an optimization control technology of a digested sludge dehydration liquid treatment process, and belongs to the technical field of high ammonia nitrogen wastewater treatment and primary sludge biochemical treatment. The reaction system uses primary sludge from urban sewage plants as a substrate, and the volatile organic acids produced by hydrolysis and acidification serve as electron donors for denitrifying bacteria to remove nitrate nitrogen. Nitrogen removal and initial stabilization of primary sludge. By monitoring the values ​​and changes of pH and ORP during the treatment process, the operating conditions are optimized and the treatment effect is enhanced. Background technique [0002] my country's "Urban Sewage Treatment Plant Pollutant Discharge Standard" (GB18918-2002) promulgated in 2002 requires that the effluent quality of all sewage units should be less than 5mg / L for ammonia nitrogen and less than 15mg / L for tota...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 彭永臻张亮张树军王淑莹吴程程
Owner 彭永臻
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