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Treatment method and special equipment for sludge reduction, resource utilization and activity improvement

A treatment equipment and treatment method technology, applied in the direction of sludge treatment, biological sludge treatment, chemical instruments and methods, etc., can solve the problems of poor operation effect and unsatisfactory comprehensive treatment effect, so as to alleviate the lysis effect and overcome negative effects effect, lysis effect, continuous and stable effect

Active Publication Date: 2022-04-15
河北冠星环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a treatment method for sludge reduction, resource utilization and activity improvement and its special equipment to solve the problems of poor operating effect and unsatisfactory comprehensive treatment effect of existing sludge reduction methods and equipment

Method used

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  • Treatment method and special equipment for sludge reduction, resource utilization and activity improvement
  • Treatment method and special equipment for sludge reduction, resource utilization and activity improvement
  • Treatment method and special equipment for sludge reduction, resource utilization and activity improvement

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Effect test

Embodiment 1

[0059] The treatment equipment of the present invention is connected with the biochemical inversion A / A / O system (hereinafter referred to as the simulated biochemical treatment system) of the simulated urban sewage treatment plant in stable operation. The simulated biochemical treatment system includes anoxic pool, anaerobic pool, aerobic pool, In the secondary sedimentation tank, denitrification is achieved through the process of nitrification in the aerobic tank - denitrification in the anoxic tank (the aerobic tank is returned to the anoxic tank at a ratio of 300%), and phosphorus removal is realized through the process of releasing phosphorus in the anaerobic tank - phosphorus accumulation in the aerobic tank , organic pollutants are removed in the anoxic tank, anaerobic tank, and aerobic tank, and the activated sludge mixture in the aerobic tank is separated from the mud and water in the secondary settling tank. Part of the sludge is returned to the front of the simulation ...

Embodiment 2

[0064] The treatment equipment of the present invention is connected with a biochemical inversion A / A / O system of a simulated urban sewage treatment plant in stable operation, and the structure and operation of the simulated biochemical treatment system are the same as in Embodiment 1.

[0065] The excess sludge of the simulated biochemical treatment system is sent into the sludge regulating tank of the equipment of the present invention, and the sludge concentration is adjusted to stabilize to 14000mg / L (in SS) in the sludge regulating tank, and then pumped into the electrochemical / pyrolysis solution Cell reaction device, adjust the amount of sludge circulation to make the sludge treatment time reach 6h, when the DC output voltage of the electrochemical / pyrolysis cell reaction device is 90V, and the current output is 6A, the pyrolysis temperature of the reactor is stable at 55°C, Under this working condition, the treated sludge concentration is reduced to 7000mg / L (calculated ...

Embodiment 3

[0069] The treatment equipment of the present invention is connected with a biochemical inversion A / A / O system of a simulated urban sewage treatment plant in stable operation, and the structure and operation of the simulated biochemical treatment system are the same as in Embodiment 1.

[0070] Send the excess sludge of the simulated biochemical treatment system into the sludge regulating tank of the equipment of the present invention, adjust the sludge concentration in the sludge regulating tank to stabilize to 6000mg / L (in SS), and then pump it into the electrochemical / pyrolysis solution Cell reaction device, adjust the amount of sludge circulation to make the sludge treatment time reach 2h, when the DC output voltage of the electrochemical / pyrolysis cell reaction device is 40V, and the current output is 4A, the pyrolysis temperature of the reactor is stable at 45°C. Under this working condition, the sludge concentration after treatment is reduced to 3100mg / L (calculated as S...

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Abstract

The invention provides a sludge reduction, resource recovery and activity-improving treatment method and its special equipment. The method of the invention includes electrochemical / pyrolysis lysis, bioenhanced hidden growth, and chemical precipitation of inorganic nitrogen and phosphorus effect and other processes. The equipment includes an electrochemical / pyrolysis lysis reaction device, a biological recessive growth pool, a mud-water separator and an inorganic nitrogen and phosphorus recovery pool. The sludge volume reduction efficiency after cell lysis is over 30%, and the sludge volume reduction efficiency after recessive growth can be increased by 25%~30%, and the VSS / SS ratio of the original wastewater biochemical treatment equipment is increased to above 0.7 , Sludge activity increased by 30%, sludge reduction and activity increase can increase sludge load by 60%, at the same time, the recovery efficiency of inorganic phosphorus resources is over 95%, and the recovery efficiency of inorganic nitrogen resources is over 30%. To sum up, the treatment method and equipment of the present invention simultaneously have the functions of sludge reduction, resource utilization and improvement of sludge activity performance.

Description

technical field [0001] The invention relates to the technical field of sludge reduction, in particular to a treatment method for sludge reduction, recycling and activity improvement and special equipment thereof. Background technique [0002] The sewage biological purification process is that microorganisms degrade and metabolize organic pollutants, and at the same time assimilate and synthesize cellular substances, thereby causing the proliferation of microorganisms. In order to maintain the normal operation of the sewage biological treatment system, the proliferating microorganisms need to be discharged from the system in the form of excess sludge. [0003] The current treatment methods for physical reduction of excess sludge in my country mainly include concentration-dehydration-stabilization-drying. The sludge disposal methods for dehydration and stabilization include sanitary landfill and land utilization, among which sanitary landfill is the most commonly used method....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C02F11/04C02F11/13C02F1/52
CPCC02F11/006C02F11/13C02F11/04C02F1/5245C02F2303/06
Inventor 董瑞山刘春罗湘
Owner 河北冠星环保科技有限公司
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