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A method for rapidly forming anaerobic ammonium oxidation granular sludge

A technology of anaerobic ammonium oxidation and granular sludge, applied in anaerobic digestion treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve difficult large-scale application, low cell yield, anaerobic ammonium Slow growth of oxidative bacteria and other problems

Inactive Publication Date: 2016-01-13
SHENYANG JIANZHU UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Anammox bacteria grow slowly, have low cell yield, and are extremely sensitive to the environment, making it difficult to apply them on a large scale in engineering practice

Method used

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  • A method for rapidly forming anaerobic ammonium oxidation granular sludge
  • A method for rapidly forming anaerobic ammonium oxidation granular sludge
  • A method for rapidly forming anaerobic ammonium oxidation granular sludge

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Embodiment Construction

[0016] Carrying out steps and processing conditions of the present invention are:

[0017] 1) Introduce nitrogen into the reactor to remove oxygen in the feed water, control the temperature of the outer layer of the reactor at 32+1°C, and control the pH at 7.8 to 8.2 with an inorganic carbon source;

[0018] 2) The material of the UASB reactor is plexiglass, which is divided into three parts: sludge reaction zone, sludge sedimentation zone, and mud-water separation zone. The sludge reaction zone has an inner and outer two-layer structure: the inner layer is the reaction zone with an inner diameter of 10cm and a total height of 200cm. The volume of the reaction zone is 11L, and the volume of the sedimentation zone is 4L. The outer layer is a constant temperature water bath area, and the temperature of the circulating water bath is controlled by a thermostat. In order to ensure that the anammox bacteria have a suitable growth environment, the reactor is protected from light.

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Abstract

The invention discloses a method for quickly forming anaerobic-ammonia oxidation and granulation sludge and belongs to the field of biological treatment of waste water. The method comprises the following steps: a reactor carries out inoculation on a UASB reactor by adopting digested sludge of a sewage treatment plant as inoculated sludge; for the reactor, MLSS is 3672mg / L, MLVSS is 2398mg / L, and MLVSS / MLSS is 65.3%; the outer-layer temperature of the reactor is controlled to be 32+1 DEG C, pH is controlled to be 7.8-8.2 by using an inorganic carbon source; the conditions of temperature and pH and the like of the reactor are maintained; by continuous nitrogen-gas aeration and addition of a metal cation composite reagent, and after stable operation for a period of time, the red anaerobic-ammonia oxidation and granulation sludge is obtained. The method disclosed by the invention has the advantages of simple operation condition and short time for oxidation and granulation of anaerobic ammonia and the like and can be widely applied in granulation of anaerobic-ammonia oxidation sludge.

Description

technical field [0001] The invention relates to ANAMMOX sludge granulation technology and belongs to the field of wastewater biological treatment. The invention aims to disclose a method for rapidly forming ANAMMOX granular sludge. Background technique [0002] Anaerobic ammonium oxidation is an efficient biological denitrification technology developed in recent years. Compared with the traditional nitrification and denitrification process, it does not need an external organic carbon source for denitrification, and the sludge output is less; it does not require oxygen at all, saving A lot of operating costs; no need for acid-base neutralizers to avoid secondary pollution. Anaerobic ammonium oxidation is especially suitable for the treatment of low-carbon and high-ammonia-nitrogen wastewater, so exploring the process of anaerobic ammonium oxidation is of great significance for the efficient treatment of ammonia-nitrogen wastewater. [0003] Anammox bacteria grow slowly, hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28C02F101/16
CPCC02F3/28C02F2101/16C02F2101/166
Inventor 于鹏飞苏杨赵鹤谦高子平
Owner SHENYANG JIANZHU UNIVERSITY