Method for efficiently enriching ammonia nitrogen ions in water based on membrane and electrode

Abstract

The invention relates to a method for efficiently enriching ammonia nitrogen ions in water based on a membrane and an electrode, and belongs to the technical field of water treatment. The method for efficiently enriching ammonia nitrogen in wastewater is characterized by comprising the following steps: introducing raw water; connecting a membrane assembly C, setting the flow and stirring; connecting a power supply and setting the current; setting an electrode submerging form and the shape and thickness of the electrode; setting an extraction stopping time ratio and cleaning a membrane assembly; putting into running once again. By adopting the method, ammonia nitrogen in water can be enriched efficiently and organic matters can be separated in a single treatment unit, the defect of insufficient denitrification carbon source in the existing nitrification / denitrification process and a deformation process thereof (such as an oxidation ditch and a BAF (Biological Aerated Filter)) for treating low C / N wastewater and the defect of poor existing NH4<+1> separating and enriching efficiency are overcome, and the problems of oxidation of organic matters in an electrochemical treatment system and insufficient denitrification carbon source are solved. Moreover, the device structure is simple, and convenience is brought to practical operation and running.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method for efficiently enriching ammonia nitrogen ions in water based on membranes and electrodes. Background technique [0002] C / N is an important factor affecting the nitrification and denitrification process. Theoretically, the stoichiometric C / N required in the denitrification process is 2.86, but the C / N required in the reported denitrification process system is much greater than 2.86, even reaching 11 or more. In wastewater treatment, the actual operating nitrification / denitrification process and its modified processes (such as oxidation ditch process, SBR process, BAF process, etc.) often add organic carbon sources or develop new carbon sources due to insufficient carbon sources, so as to increase C / N achieves the denitrification effect, which virtually increases the operating cost. Moreover, in the electrochemical system, not all organic matter is...

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Problems solved by technology

[0005] The purpose of the present invention is to deal with the problem of insufficient carbon source for denitrification of low C / N waste water in the existing nitrification / denitrification process and its modified process (such as oxidation ditch, BAF, etc.) for treating waste water, and existing NH 4 + Insufficiency and defects of the separation and enrichment method, as well as the problem of carbon source reduction caused by the oxidation of organic matter by the electrolysis product of the electrochemical system, provides a method for the efficient enrichment of ammonia nitrogen ions in water based on membranes and electrodes, which can fully separate organic matter and enrich Ammonia nitrogen, so that the ammonia nitrogen in the effluent is concentrated and the organic matter is separated, thereby realizing the enrichment of ammonia nitrogen and the separation of organic matter, and the device is a single treatment device with a simple structure and easy operation

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