A kind of microbe maintenance method without water for baf

A technology of microorganisms and biological aerated filters, applied in biological treatment devices, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of huge environmental pollution damage and failure to meet normal standards, so as to avoid inhibition and maintain The effect of normal growth metabolism and reducing energy consumption

Active Publication Date: 2022-04-15
AWS ENVIRONMENT TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During this period, the normal water production cannot meet the standard, which will cause great damage to environmental pollution

Method used

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  • A kind of microbe maintenance method without water for baf
  • A kind of microbe maintenance method without water for baf
  • A kind of microbe maintenance method without water for baf

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of BAF water cut off microbial maintenance method, comprises the following steps:

[0042] 1) Filling: The microorganisms of the biological aerated filter are upward-flowing biological aerated filters, and the bottom is connected with the water inlet and the upper part of the inlet water distribution pipe, and pebbles with a height of 0.2 meters and a particle size of 15-20mm are laid as a supporting layer ; The upper part of the supporting layer is filled with 4.5 meters of activated zeolite as a packing layer for nitrifying bacteria. A clear water area is provided between the packing layer and the upper water outlet of the biological aerated filter, and the height of the clear water area is 0.5m. Among them, the particle size of the activated zeolite is 3-5mm, the porosity is 65%, and the specific surface area is 120m 2 / g; SiO 2 / Al 2 o 3 The molar ratio is less than 4.5, and the cation exchange capacity is 250mmol / g.

[0043] 2) supplement nutrients and ...

Embodiment 2

[0049] A kind of BAF water cut off microbial maintenance method, comprises the following steps:

[0050] 1) Filling: The microorganisms of the biological aerated filter are upward-flowing biological aerated filters, and the bottom is connected with the water inlet and the upper part of the inlet water distribution pipe, and pebbles with a height of 0.2 meters and a particle size of 15-20mm are laid as a supporting layer ; The upper part of the supporting layer is filled with 5.0 meters of activated zeolite as a packing layer for nitrifying bacteria. A clear water area is provided between the packing layer and the upper water outlet of the biological aerated filter, and the height of the clear water area is 1m. Among them, the particle size of the activated zeolite is 3-5mm, the porosity is 75%, and the specific surface area is 160m 2 / g; SiO 2 / Al 2 o 3 It is 4.2, and the cation exchange capacity is 300mmol / g.

[0051] 2) supplement nutrients and trace elements: add nutri...

Embodiment 3

[0057] A kind of BAF water cut off microbial maintenance method, comprises the following steps:

[0058] 1) Filling: The microorganisms in the biological aerated filter are upward-flowing biological aerated filters, and pebbles with a height of 0.2 meters and a particle size of 15-20 mm are laid on the bottom of the water inlet and the inlet water distribution pipe as a supporting layer ; The upper part of the supporting layer is filled with 4.5 meters of activated zeolite as a packing layer for nitrifying bacteria. A clear water area is provided between the packing layer and the upper water outlet of the biological aerated filter, and the height of the clear water area is 0.6m. Among them, the particle size of the activated zeolite is 3-5mm, the porosity is 75%, and the specific surface area is 200m 2 / g; SiO 2 / Al 2 o 3 is 4.0, and the cation exchange capacity is 400 mmol / g.

[0059] 2) supplement nutrients and trace elements: in the clear water area of ​​the biological...

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Abstract

The invention discloses a method for maintaining microorganisms without water for BAF, which includes enriching and cultivating nitrifying bacteria by using nutrients and trace elements, and changing dissolved oxygen concentration, pH, ammonia nitrogen concentration and supplementing carbon sources during nitrifying BAF without water The parameters enable the nitrosation reaction, nitrification reaction and denitrification reaction to be carried out in a cycle, which can effectively maintain the normal growth and metabolism of nitrosifying bacteria and nitrifying bacteria, and keep the number of bacteria not reduced, so that the BAF pool can immediately reach the ammonia nitrogen standard when the water is restored.

Description

technical field [0001] The invention relates to a biological aerated filter water treatment technology in water treatment, in particular to a BAF water cut off microbial maintenance method. Background technique [0002] According to survey statistics, ammonia nitrogen has been included in the binding control indicators for major water pollution discharges in the country. Biological aerated filter, referred to as BAF, is a water treatment device that integrates sewage biological oxidation treatment and deep filtration. It is mainly used for advanced treatment of low-concentration sewage and pretreatment of slightly polluted source water, such as urban domestic sewage and low Advanced treatment of concentrated industrial sewage, pretreatment of source water for water supply, etc. As an effective sewage treatment process, the biological aerated filter has been valued for its good water discharge effect, stable operation, convenient management, and small footprint. [0003] Us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F3/30
CPCC02F3/34C02F3/302C02F2203/006C02F2305/06C02F2209/22C02F2209/06C02F2209/14
Inventor 赵皓翰倪康祥
Owner AWS ENVIRONMENT TECH LTD
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