A low-carbon source sewage autotrophic denitrification deep denitrification device and method

Active Publication Date: 2022-04-19
ZHENGZHOU UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] On the other hand, a deep denitrification method of autotrophic denitrification is provided to solve the problems of long start-up time, high concentration of sulfate radicals in the effluent, easy blockage, and easy outflow of sulfur in the process of treating low-carbon source sewage in the existing autotrophic denitrification technology. question

Method used

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  • A low-carbon source sewage autotrophic denitrification deep denitrification device and method
  • A low-carbon source sewage autotrophic denitrification deep denitrification device and method
  • A low-carbon source sewage autotrophic denitrification deep denitrification device and method

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Embodiment 1

[0043] figure 1 A schematic structural diagram of the low-carbon source sewage autotrophic denitrification deep denitrification device of this embodiment is shown. The device includes a regulating tank 1, a reactor 16, and a sedimentation tank 12. The regulating tank 1 is provided with a pH probe 3 and a dissolved oxygen probe 4. The pH probe 3 is connected to the pH automatic control system 2, and the dissolved oxygen probe 4 Connected to the dissolved oxygen automatic control system 5, the pH automatic control system 2 is used to monitor the pH of the sewage in the adjustment tank 1, and the dissolved oxygen automatic control system 5 is used to monitor the dissolved oxygen concentration of the sewage in the adjustment tank 1.

[0044] The bottom of the regulating tank 1 is provided with a water outlet, and the bottom of the reactor 16 is provided with a water inlet. The water outlet of the regulating tank 1 and the water inlet of the reactor 16 are connected by a pipeline, ...

Embodiment 2

[0056] On the basis of the low-carbon source sewage autotrophic denitrification device in Example 1, this embodiment is a low-carbon source sewage autotrophic denitrification method. The method includes a start-up phase and an operation phase. The specific steps are as follows: :

[0057] Startup phase:

[0058] S101: Sewage enters the adjustment tank 1 from the water inlet of the adjustment tank 1, adjusts the water quality and water volume of the system, adjusts the pH of the inlet water by the pH automatic control system 2 to maintain it at 7.0-8.0, and adjusts the dissolved oxygen automatic control system 5 to adjust the dissolution of the inlet water The oxygen concentration is 0.5-1.5 mg / L, and an appropriate amount of trace element solution that is beneficial to the reproduction of autotrophic denitrifying bacteria is added. By creating an environment conducive to the growth and reproduction of autotrophic denitrifying bacteria, the film can be formed faster and the sy...

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Abstract

The invention provides an autotrophic denitrification deep denitrification device, which belongs to the technical field of waste water deep denitrification. The device includes a regulating tank, a reactor, and a sedimentation tank. A mud discharge area is provided at the bottom of the reactor, and a water distribution pipe is provided above the mud discharge area. There is a filter screen between the mud discharge area and the water distribution pipe. The water distribution pipe There is a reaction zone above the reaction zone, and a gas collection zone above the reaction zone. The device constructs an autotrophic denitrification biological filter bed, and optimizes the type and ratio of fillers in the reaction zone. The invention also discloses an autotrophic denitrification deep denitrification method. The method optimizes the operation mode and operating conditions, improves the biological activity and denitrification ability of the autotrophic denitrification bacteria in the system, thereby reducing the start-up time and enhancing the denitrification capacity. The denitrification effect of the system is improved, and it has the characteristics of low energy consumption, fast response, and no secondary pollution. It solves the problems of long start-up time, high sulfate concentration in effluent, Easy to block, easy to flow out of sulfur and other problems.

Description

technical field [0001] The invention relates to the technical field of sewage purification treatment, more precisely, belongs to the technical field of deep denitrification of wastewater. In particular, it belongs to a low-carbon source sewage autotrophic denitrification deep denitrification device and method. Background technique [0002] With the development of my country's industry and the improvement of people's living standards, the nitrogen emissions in production and life have also increased sharply. At present, my country's various water environment quality standards and water treatment pollutant discharge standards only stipulate the limits of ammonia nitrogen and total nitrogen, but do not implement restrictive regulations on nitrate nitrogen. For example, in the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB 18918-2002), the maximum allowable discharge standards for ammonia nitrogen and total nitrogen grade A are 5 (8) and 15 mg / L, respecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/28C02F3/34C02F101/16
CPCC02F3/28C02F3/2866C02F3/34C02F9/00C02F2101/163C02F2101/16C02F2001/007C02F2305/06C02F2209/06C02F2209/22C02F1/66
Inventor 高镜清朱桐豆张敬申陈少华郭晗
Owner ZHENGZHOU UNIV
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