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Rapid preparation method of denitrification phosphorus-accumulating bacteria granule sludge

A technology for denitrifying phosphorus-accumulating bacteria and granular sludge, which is applied in chemical instruments and methods, sludge treatment, biological sludge treatment, etc. quick effect

Inactive Publication Date: 2014-08-27
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problem that the cultivation of existing denitrifying phosphorus accumulating bacteria still stays at the stage of flocculent sludge, and it is difficult to form granules; and provides a rapid preparation method of denitrifying phosphorus accumulating bacteria granular sludge

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  • Rapid preparation method of denitrification phosphorus-accumulating bacteria granule sludge
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  • Rapid preparation method of denitrification phosphorus-accumulating bacteria granule sludge

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specific Embodiment approach 1

[0015] Specific embodiment 1: A rapid preparation method of denitrifying phosphorus accumulating bacteria granular sludge in this embodiment is to inoculate the flocculent sludge with biological phosphorus removal function discharged from sewage treatment plants into the SBR reaction In the container, the inoculation amount is 3000mg / L~3200mg / L, and the cultivation is completed in three stages:

[0016] The first stage is carried out in the anaerobic / aerobic mode of operation. The COD, total nitrogen, and total phosphorus concentrations of the influent are 300mg / L-400mg / L, 10mg / L, and 10mg / L respectively. A cycle, the anaerobic time in the unit cycle is 150min, the aerobic time is 270min, the amount of dissolved oxygen in the aerobic section is 4-5mg / L; dissolved oxygen plays an important role in the formation and stability of aerobic granular sludge, However, phosphorus accumulating bacteria must go through two stages of anaerobic phosphorus release and aerobic phosphorus upt...

specific Embodiment approach 2

[0023] Embodiment 2: This embodiment differs from Embodiment 1 in that: the amount of dissolved oxygen in the aerobic section in the first stage is 4.5 mg / L. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Specific implementation mode 3: What is the difference between this implementation mode and specific implementation mode 2? : The dissolved oxygen in the anoxic section of the second stage is 0.6mg / L. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention relates to a rapid preparation method of denitrification phosphorus-accumulating bacteria granule sludge, belongs to the field of sewage treatment and is used for solving the problems that the existing denitrification phosphorus-accumulating bacteria can only be cultured into flocculent sludge and cannot form granule sludge. The method comprises the following steps that the flocculent sludge serving as inoculated sludge is inoculated in an SBR reactor (Batch Reactor), wherein the flocculent sludge is discharged from a sewage treatment plant and has the biological phosphorus-removing function; and the inoculating volume is from 3000mg / L to 3200mg / L. The culturing operation is finished in three phases: performing the first phase in an anaerobic / aerobic running manner; performing the second phase in an anaerobic / anoxic / aerobic running manner; and performing the third phase in an anaerobic / anoxic manner, wherein the sludge ages during the three phases are respectively 8 days. The method provided by the invention is applied to the field of the water treatment.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a rapid preparation method of denitrifying phosphorus accumulating bacteria granular sludge. Background technique [0002] Denitrification and polyphosphorus are considered as a sustainable wastewater treatment process. This process uses denitrifying phosphorus-accumulating bacteria to complete the two processes of denitrification and phosphorus removal at the same time. The combination of phosphorus removal and denitrification not only reduces the need for carbon sources for denitrification, but also completes phosphorus removal under anoxic conditions, which can save a lot of energy. Energy and tank capacity required for oxypolyphosphorus aeration. At present, the cultivation of denitrifying phosphorus accumulating bacteria is still in the stage of flocculent sludge. Because denitrification has a low demand for oxygen, denitrifying phosphorus accumulating bacteria ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/02C02F3/34
CPCY02W10/20
Inventor 高大文何理
Owner NORTHEAST FORESTRY UNIVERSITY