Method for rapidly realizing partial nitrification of municipal sewage through aerobic starvation

A technology for urban sewage and short-range nitrification, which is applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of destroying short-range nitrification, instability, etc. The effect of sedimentation performance and strong hunger sustaining ability

Active Publication Date: 2014-11-26
BEIJING UNIV OF TECH
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Problems solved by technology

However, the system is not stable during this stage, and once the environment that strictly inhibits NOB is lost, or NOB adapts to the previously inhibited environment, NOB can start to grow rapidly, disrupting the achievement of short-range nitrification

Method used

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  • Method for rapidly realizing partial nitrification of municipal sewage through aerobic starvation
  • Method for rapidly realizing partial nitrification of municipal sewage through aerobic starvation
  • Method for rapidly realizing partial nitrification of municipal sewage through aerobic starvation

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and technical solutions, but the present invention is not limited to the following examples.

[0024] refer to figure 1 Shown is a schematic structural diagram of a test device for quickly realizing short-range nitrification of urban sewage through aerobic starvation, in which the 3L SBR main device (12) is stirred and mixed by a magnetic rotor stirrer (6), and a 6cm long rotor is built in (7); Water inlet system (5), water outlet system (1), dosing system (2), aeration system (3) and sampling system (4) are set on the top of the reactor, wherein water inlet system, water outlet system and The medicine system uses a peristaltic pump to run regularly, and the aeration system is formed by connecting the air pump and the sticky sand block (8) through a silicone tube; the overflow pipe (13) and the mud discharge pipe (14) are set on the side wall of the reactor; the...

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Abstract

The invention discloses a method for rapidly realizing partial nitrification of municipal sewage through aerobic starvation and belongs to the technical field of sewage treatment. The method comprises the following steps: 1, closing a water inlet and outlet system, and continuously stirring and aerating, so that the sludge is positioned in an aerobic starvation state; 2, performing aerobic starvation for 5-14 days; and 3, restoring the sludge activity. According to the method, by utilizing different starvation sensitivities of ammonia oxidizing bacteria and nitrite-oxidizing bacteria on the aerobic starvation environment and high NOB aerobic attenuation rate, lots of NOB decays. Meanwhile, AOB has high starvation maintenance capacity, and when the environment is suitable for cell growth, the AOB is positioned in a dominant bacteria place due to a high activity recovery rate. Due to control of the aeration time and sludge age, long-term maintenance of the AOB dominant bacteria place is further realized. The method disclosed by the invention has the advantages of simplicity in operation, low economic investment, rapid realization of partial nitrification and stable short-term effect.

Description

technical field [0001] The invention relates to a method for quickly realizing short-range nitrification of urban sewage by using aerobic starvation to treat activated sludge, and belongs to the field of sewage treatment. Background technique [0002] Due to the variability and uncertainty of the natural environment, the microorganisms growing in it will inevitably face a starvation period of nutrient shortage. The harsh starvation environment tests the survival of various microorganisms in the region, and also creates opportunities for changes in the microbial population. conditions. In order to ensure the long-term maintenance of cells, microorganisms have evolved various starvation coping mechanisms, mainly including changing cell structure, reducing cell size, reducing energy requirements for cell maintenance, forming intracellular energy particles, changing cell metabolic pathways, and so on. [0003] Nitrifying bacteria are a kind of chemotrophic bacteria, mainly incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F3/34
CPCY02W10/10
Inventor 彭永臻刘文龙苗圆圆王淑莹
Owner BEIJING UNIV OF TECH
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