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Sequencing batch completely autotrophic ammonia removal technology running method

A technology of full autotrophic denitrification and operation method, applied in the field of sequencing batch full autotrophic denitrification CANON process, which can solve the problems of long startup time and harsh operating conditions of the autotrophic denitrification CANON process, and save the startup time. , ending a simple, effective, easy-to-control effect

Inactive Publication Date: 2013-06-26
BEIJING UNIV OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of long start-up time and harsh operating conditions of the whole autotrophic denitrification CANON process

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  • Sequencing batch completely autotrophic ammonia removal technology running method
  • Sequencing batch completely autotrophic ammonia removal technology running method
  • Sequencing batch completely autotrophic ammonia removal technology running method

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specific Embodiment

[0031] Sequence batch CANON process to treat artificial high ammonia nitrogen distribution water, add appropriate amount (NH 4 ) 2 SO 4 , NaHCO 3 、KH 2 PO 4 formulated without organic carbon sources. The specific water quality is as follows:

[0032] The mass concentration of ammonia nitrogen is 380-420mg / L; the mass concentration of nitrite nitrogen is 0-5mg / L; the mass concentration of phosphate is 0.5-2mg / L; the mass concentration of alkalinity (as CaCO 3 ) is 1600-1800mg / L.

[0033] The reactor is a biological reaction tank made of plexiglass, with an inner diameter of 250mm, a height of 250mm, a total volume of 12L, and an effective volume of 10L. It adopts the sequence batch operation mode, with a stirring device inside and an aeration device at the bottom, and the aeration volume is controlled by a rotameter.

[0034] In the normal operation stage, the water exchange ratio is 0.7, the aeration rate is 0.2L / min, the temperature is 17-25°C, the pH is 8.0-8.2, and ...

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Abstract

A sequencing batch completely autotrophic ammonia removal (CANON) technology running method belongs to the technical field of high-ammonia-nitrogen wastewater processing. The method comprises the following steps: 1, directly inoculating volcanic CANON biofilter backwash sludge for saving a long starting time; 2, determining the running DO value of the technology, and improving the dissolved oxygen when the DO value is 0-0.5, and most preferably 0.4, to improve the reaction rate; and 3, carrying out appropriate extended aeration to completely remove ammonia nitrogen in a reaction system without influencing the stable running of the system. The running method successfully solves a long starting time problem of the CANON technology, has the advantages of simplicity, obvious effect, and convenience for subsequent technological treatment because of the complete removal of ammonia nitrogen, and is a feasible and effective method for the running of the sequencing batch CANON technology.

Description

technical field [0001] The invention relates to the field of high-ammonia-nitrogen wastewater treatment, in particular to an operation method for solving the problem of sequence-batch full-scale autotrophic denitrification CANON process under the condition of high-ammonia-nitrogen wastewater. Background technique [0002] With the intensification of economic development and human activities, water pollution is increasing day by day, among which nitrogen pollution will lead to a series of problems such as eutrophication of water, isolation of atmospheric oxygen enrichment, generation of toxic substances, and increase of water treatment costs. The sludge digestion liquid of the sewage plant and various industrial wastewater (fertilizer production, food processing, printing and dyeing industry, landfill and landfill leachate, etc.) discharge a large amount of ammonia nitrogen, which has the characteristics of high ammonia nitrogen concentration and low C / N. Therefore, it is diff...

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Application Information

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IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 李冬崔少明梁瑜海杨卓苏庆岭吴青何永平张翠丹张玉龙周元正门绚杨胤范丹曾辉平张杰
Owner BEIJING UNIV OF TECH
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