Method of enriching ammonia and nitrogen in water and device thereof

Abstract

The invention relates to a method of enriching ammonia and nitrogen in water and a device thereof, and belongs to the technology field of water processing. The method of enriching ammonia and nitrogen is characterized by comprising following steps: introducing raw water, connecting membrane module C, setting the flow, stirring, connecting a power supply and setting the current, setting absorbing / stopping time ratio and washing membrane module C, and re-operating. In order to complete the steps mentioned above, a specific application device is arranged. The method and device can respectively separate and enrich organics, ammonia and nitrogen in the water in a single processing unit, so the insufficiency of carbon source of denitrification in the waste water processing nitration / denitrification technology and derivation technologies such as oxidation ditch and BAF, and the defect of NH4+ separation and enrichment method in the prior art are overcome, furthermore, the device has a simple structure and is convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a method and device for enriching ammonia nitrogen in water. Background technique [0002] C / N is an important factor affecting the nitrification and denitrification process. Theoretically, the stoichiometrically required C / N in the denitrification process is 2.86 (COD / NO 3 - -N), however, it is reported that the actual required C / N in the nitrification / denitrification system is far greater than 2.86, often at 7 or even above 11. In the process of 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 (such as methanol, ethanol, etc.) or Develop new carbon sources to increase the C / N value to achieve denitrification effect, which virtually increases the operating cost. [0003] During my research on biological denitrif...

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Problems solved by technology

[0005] The purpose of the present invention is to address the problem of insufficient denitrification carbon sources in the existing nitrification / denitrification process for wastewater treatment and its deformation process (such as oxidation ditch, BAF, etc.), and the existing NH 4 + Insufficiencies and defects of the separation and enrichment method provide a method and device for enriching ammonia nitrogen in water. The method and device can separate and enrich organic matter and ammonia nitrogen in water in a single treatment unit. The system effluent contains NH 4 + The concentration is high and the content of organic matter is low, thereby realizing the enrichment of ammonia nitrogen and the separation of organic matter, and the structure of the device is simple, which is convenient for actual operation

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