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Method for strengthening short-cut nitrification reactor by embedded cathode dynamic membrane

A short-range nitrification and reactor technology, applied in chemical instruments and methods, electrochemical biological combination treatment, sustainable biological treatment, etc., can solve the problems of slow growth and restriction of engineering application, increase the content of bacteria, solve the problem of microbial Loss, overcoming the effect of fast membrane fouling rate

Active Publication Date: 2021-08-13
福建省环境科学研究院福建省排污权储备和技术中心
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Problems solved by technology

However, cultivating short-path nitrifying bacteria in a dynamic membrane bioreactor can effectively alleviate the problem of sludge loss, but the problem of slow growth of short-path nitrifying bacteria as an autotrophic bacteria is still the key to restricting the further engineering application of this process

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  • Method for strengthening short-cut nitrification reactor by embedded cathode dynamic membrane
  • Method for strengthening short-cut nitrification reactor by embedded cathode dynamic membrane
  • Method for strengthening short-cut nitrification reactor by embedded cathode dynamic membrane

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] This embodiment provides a method for a short-path nitrification reactor with an embedded cathode dynamic membrane, which includes the following steps:

[0026] Prepare continuous flow reactor, domesticated short-range nitrification sludge, dynamic membrane module, iron plate, electrochemical workstation, water inlet tank, peristaltic pump, aeration pump, differential pressure gauge and outlet pump.

[0027] The dynamic membrane module is installed in the continuous flow reactor, the stainless steel lining is used as the cathode in the dynamic membrane module, the iron plate is used as the anode, and the cathode and the anode are respectively connected to the electrochemical workstation.

[0028] The aeration pump is set in the continuous flow reactor, and the prepared short-path nitrification sludge is added to make the concen...

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Abstract

The invention relates to a method for strengthening a short-cut nitrification reactor by an embedded cathode dynamic membrane. The method comprises the following steps: preparing a continuous flow reactor, successfully domesticated short-cut nitrification sludge, a dynamic membrane assembly, an iron plate, an electrochemical workstation, a water inlet tank, a peristaltic pump, an aeration pump, a differential pressure gauge and a water outlet pump; installing the dynamic membrane assembly in the continuous flow reactor, adopting a stainless steel lining as a cathode in the dynamic membrane assembly, adopting the iron plate as an anode, and respectively connecting the cathode and the anode with the electrochemical workstation; arranging the aeration pump in the continuous flow reactor, and adding the short-cut nitrification sludge; enabling the continuous flow reactor to operate in a continuous water inlet mode, controlling high ammonia nitrogen load and low dissolved oxygen concentration of inlet water, performing intermittent aeration in different periods, and controlling the aeration intensity; and enhancing the operation effect of the reactor by combining an electrochemical means of controlling current and electrifying time, increasing the content of bacteria related to short-cut nitrification, and reducing the membrane pollution rate. The method is beneficial to reducing the membrane pollution rate and prolonging the membrane operation cycle.

Description

technical field [0001] The invention belongs to the technical field of wastewater biological treatment, and in particular relates to a method for strengthening a short-range nitrification reactor with a built-in cathode dynamic membrane. Background technique [0002] The traditional biological denitrification process has problems such as high construction cost, large amount of sludge production, high operating costs such as aeration and chemicals, so the new and efficient biological denitrification sewage treatment technology is currently a hot spot in research and development. As a new type of autotrophic biological denitrification technology, short-range nitrification has the advantages of small land occupation, small amount of sludge production, small amount of aeration and chemical dosage, etc., but the functional bacteria of this technology are nitrous bacteria. , the growth and reproduction are relatively slow, and the loss of sludge limits its further development and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/10C02F3/34
CPCC02F3/005C02F3/34C02F3/10Y02W10/10
Inventor 张健陈益明刘文贵张新颖张伟亮
Owner 福建省环境科学研究院福建省排污权储备和技术中心
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