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Method for removing ammonia nitrogen from sewage in subzone

A technology for removing ammonia nitrogen and sewage, applied in chemical instruments and methods, adsorption water/sewage treatment, oxidized water/sewage treatment, etc. The effect of low ground area

Inactive Publication Date: 2005-10-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for removing ammonia nitrogen from community sewage, so as to overcome many shortcomings of the traditional nitrification and denitrification biological ammonia nitrogen removal process, such as large investment, large floor area, and difficulty in completely removing ammonia nitrogen.

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  • Method for removing ammonia nitrogen from sewage in subzone
  • Method for removing ammonia nitrogen from sewage in subzone

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specific Embodiment approach 1

[0010] Specific Embodiment 1: In this embodiment, the deammonization nitrogen treatment is carried out to the sewage of the community in this way: after the sewage is treated by the anaerobic filter, the contact oxidation tank and the sedimentation tank, the core is: (1) the effluent of the sedimentation tank enters the granular modified In the modified zeolite adsorption regeneration unit of zeolite, the modified zeolite adsorption regeneration unit includes parallel two-stage modified zeolite adsorption regeneration columns, and the effluent from the sedimentation tank enters the one-stage modified zeolite adsorption regeneration column in the upward flow mode, and the zeolite As an ion exchanger to adsorb ammonia nitrogen in sewage, the nitrifying bacteria biofilm adhering to the surface of zeolite absorbs free ammonia in water; (2) The modified zeolite in this level of modified zeolite adsorption regeneration column stops water inflow after ammonia nitrogen adsorption is sat...

specific Embodiment approach 2

[0011] Specific implementation mode two: see figure 1 and figure 2 , the modified zeolite adsorption regeneration unit of the present embodiment is composed of a modified zeolite adsorption regeneration column 4 and a modified zeolite adsorption regeneration column 5 in parallel with two poles, between the modified zeolite adsorption regeneration column 4 and the modified zeolite adsorption regeneration column 5 Equipped with an automatic transfer switch 6, a backwash device 8 is installed at the bottom of the modified zeolite adsorption regeneration column, and a bicarbonate regeneration liquid storage tank 9 is installed on one side of the modified zeolite adsorption regeneration column. A regenerated liquid reflux device 10 is installed between the liquid storage tanks 9, and an aeration device 7 is installed at the bottom of the regeneration column. The process of using it to treat ammonia nitrogen in the sewage is as follows: (1) The sewage passes through the anaerobic f...

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Abstract

The present invention relates to a method for deamination and denitrification of residential quarter sewage, belonging to the field of sewage treatment technology. It is characterized by that after the sewage is passed through anaerobic filter tank, contact oxidation tank and precipitation tank to obtain treatment, then sewage can upwards flow and be fed into two parallel modified zeolite adsorption regeneration columns to implement ammonia and nitrogen adsorption at twice successively, so that said invention can obtain high ammonia and nitrogen treatment efficiency. Said invention also provides the regeneration method of the above-mentioned zeolite adsorption regeneration column by using backflush process.

Description

Technical field: [0001] The invention belongs to the technical field of sewage treatment and relates to a method for removing ammonia nitrogen from community sewage. Background technique: [0002] In recent years, with the rapid development of urban construction and industry, as well as the continuous expansion of urban population, the size and number of urban communities are also increasing sharply. Although cities across the country are actively building, rebuilding and expanding urban sewage treatment plants, there are still a large number of substandard community sewage that is directly discharged into receiving water bodies. The discharge of this part of sewage not only pollutes the environment and water sources, but also worsens the increasing shortage of water resources and the deterioration of water quality, thus leading to a vicious cycle of the ecological environment. Therefore, how to solve the standard discharge of nitrogen, phosphorus and other pollution indica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 张兵张学洪崔福义魏彩春
Owner HARBIN INST OF TECH
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