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IEM-UF nitrogen enrichment-nitrosation-denitrification nitrogen removal method and device

A nitrification and denitrification technology, applied in chemical instruments and methods, anaerobic digestion treatment, multi-stage water treatment, etc., can solve the problems of low wastewater treatment efficiency, save denitrification time, improve total nitrogen removal rate, The effect of high operating efficiency

Active Publication Date: 2016-11-30
BEIJING UNIV OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for the enrichment and removal of ammonia nitrogen using a combined membrane bioreaction system for the problem that the existing low C / N ratio wastewater treatment efficiency is not high. Organic matter and denitrification function, especially to provide a treatment method for wastewater with insufficient carbon source

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  • IEM-UF nitrogen enrichment-nitrosation-denitrification nitrogen removal method and device
  • IEM-UF nitrogen enrichment-nitrosation-denitrification nitrogen removal method and device

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Embodiment Construction

[0028] Attached below figure 1 And embodiment is described in detail, to further understand the present invention.

[0029] The present invention uses an IEM-UF composite membrane to treat domestic sewage, which includes: an ammonia nitrogen separator, a nitrosation reactor, and a short-range denitrification reactor. The ammonia nitrogen separator is in the shape of a cuboid with an effective volume of 20L. Wherein the membrane assembly C is made up of cation exchange membrane 30, ultrafiltration membrane (or microfiltration membrane) 31 and support plate 32 with diversion groove 33 and hole 34; cation exchange membrane 30 and ultrafiltration membrane (or microfiltration membrane) Membranes) 31 are respectively fixed on both sides of the support plate 32, and the electrode plates are mesh iron electrodes. The short-range denitrification reactor and nitrosation reactor are made of cylindrical plexiglass with an effective volume of 2.0L. The nitrosation reactor is an open con...

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Abstract

The invention provides an IEM-UF nitrogen enrichment-nitrosation-denitrification nitrogen removal method and device and belongs to the technical field of sewage treatment. The method for waste water treatment includes enriching NH<4+> in waste water and separating organic matters by a membrane assembly IEM-UF, performing an aerobic nitrosation reaction, performing anoxic short-distance denitrification combining the organic matters separated in advance, and discharging water in order. To perform the steps of the method, the device specially for performing the method is provided. The method and the device have a good organic matter removing capability and a good nitrogen removing function, and especially provide a treating manner for waste water having insufficient treating carbon sources and high-concentration organic matter high-ammonia-nitrogen waste water. In addition, the method and the device can effectively reduce the aerobic aeration rate, shorten denitrification time and reduce the running cost.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a nitrogen enrichment and removal method and device using a combined membrane biological reaction system. Background technique [0002] Low C / N ratio is a typical water quality characteristic of urban domestic sewage in my country. The traditional sewage treatment process mainly converts ammonia nitrogen into nitrite through nitrification and denitrification, and then converts nitrite into nitrogen through reduction to achieve the purpose of denitrification. However, the carbon source content in domestic sewage is usually insufficient, and the traditional treatment process needs to add carbon source to the denitrification stage, resulting in increased operating costs. [0003] For the denitrification of low C / N domestic sewage, the applicant invented "a method and device for nitrogen enrichment and removal using a combined membrane bioreaction system" (paten...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F3/1263C02F3/28C02F3/305C02F1/444C02F1/469C02F2301/08C02F2001/425Y02W10/10
Inventor 张岩郭威邢金良马翔山张博康
Owner BEIJING UNIV OF TECH
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