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A method to quickly start the whole process of autotrophic denitrification

A technology of autotrophic denitrification in the whole process and rapid start-up. It is used in the treatment of wastewater containing ammonia nitrogen and low C/N ratio, and in the field of rapid start-up in the field of autotrophic denitrification in the whole process. and other problems, to achieve the effect of improving the application field, reducing the cost of startup and operation, and saving energy consumption.

Active Publication Date: 2019-07-26
SHENYANG INST OF AUTOMATION GUANGZHOU CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The main purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and provide a method for quickly starting the whole process of autotrophic denitrification, which can alleviate the problems of long start-up period and difficult start-up existing in the current full-range autotrophic denitrification technology , while alleviating the technology's lack of operational stability during start-up

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  • A method to quickly start the whole process of autotrophic denitrification
  • A method to quickly start the whole process of autotrophic denitrification
  • A method to quickly start the whole process of autotrophic denitrification

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Embodiment

[0029] The water quality parameters of a wastewater containing ammonia nitrogen are as follows: pH 8.04-8.28, COD cr 0.0-7.0mg / L, NH 4 + -N82.5-113.5mg / L, NO 2 - -N 0.0mg / L, NO 3 - -N 2.0-2.3mg / L.

[0030] Such as figure 1 Shown, technological process of the present invention is:

[0031] (1) Seed mud preparation. Ordinary activated sludge from the secondary sedimentation tank of urban sewage treatment plant is used as the seed sludge, the color is light yellowish brown, the pH is in the range of 7.0-7.2, and the MLSS is in the range of 3000-4000mg / L. After 12 hours of precipitation, MLSS is in the range of 14000-14500mg / L, and MLVSS is in the range of 8000-8500mg / L;

[0032] (2) Inoculate seed mud. After the seed sludge in step (1) is aerated with air for 72 hours, the sludge concentration is adjusted within the range of 14000-14500 mg / L. Get 2.5L of this sludge and pour it into a submerged biofilter (SBAF) reactor that is suspended with combined filler and has an...

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Abstract

The invention belongs to the field of ammonia nitrogen-containing wastewater treatment, and discloses a method for rapidly starting completely autotrophic ammonia removal. The method is a wastewater treatment method, and comprises the following steps: 1, seed sludge preparation; 2, seed sludge inoculation; 3, biofilm colonization; and 4, running starting. The method for rapidly starting completely autotrophic ammonia removal has the advantages of shortened starting period, reduction of the aeration rate and the hydraulic retention time, improvement of the adaptability of microbes in sludge in a large water temperature change range, reduction of the investment cost of nutrient demands in the domestication process of sludge, substantial saving of the starting period, and improvement of the running stability of a system.

Description

technical field [0001] The invention belongs to the field of wastewater treatment containing ammonia nitrogen, and in particular relates to a method for quickly starting the whole process of autotrophic denitrification, which is mainly used for treating wastewater containing ammonia nitrogen and a low C / N ratio. Background technique [0002] Pharmaceutical, chemical, fertilizer, petrochemical, coking, smelting, slaughtering and other industries are major industrial players in the discharge of ammonia nitrogen-containing wastewater in my country. The ammonia nitrogen-containing wastewater discharged by them has the characteristics of low C / N ratio and is one of the main industrial wastewater that is difficult to treat. Traditional biological denitrification mainly adopts nitrification-denitrification denitrification technology. In the actual operation process of this technology, there are situations where ammonia nitrogen nitrification effect is good, but denitrification capac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F101/16
CPCC02F3/302C02F2101/16C02F2203/004C02F2305/06
Inventor 岳秀于广平刘竹寒吉世明唐嘉丽
Owner SHENYANG INST OF AUTOMATION GUANGZHOU CHINESE ACAD OF SCI
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