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Method for repairing and regenerating aged suspended biological membrane filler

A technology of restoration regeneration and biological filler, which is applied in the field of environmental biotechnology and water treatment, can solve the problems of low biofilm activity, poor treatment effect, and non-renewal of biofilm, and achieve convenient operation, low price, efficient renewal and reuse Effect

Inactive Publication Date: 2015-03-04
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Biofilms containing dead or aging microorganisms cannot fall off, new active microbial films cannot grow, biofilms cannot be renewed, the activity of biofilms is getting smaller and smaller, and the treatment effect is getting worse

Method used

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  • Method for repairing and regenerating aged suspended biological membrane filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The method for repairing and renewing biofilm in a bioreactor for wastewater treatment comprises the following steps: the method comprises the following steps:

[0035] 1) taking out the aging biofilm of the suspended biofiller in the biofilm reactor and drying it;

[0036] 2) Start the vibrating screen stripping treatment device, the suspended filler is covered with biofilm, and the vibrating screen regularly vibrates the biofilm to make the aging and loose biofilm and the waste water sludge accumulated here fall off and then discharge;

[0037] 3) Acid-base chemical elution; use 5% acid wash first, then 5% alkali wash;

[0038] 4) The enzyme preparation is further eluted; the enzyme preparation is a protease;

[0039] 5) dry the filler after step 4), and put the filler back into the biofilm reactor;

[0040] 6) Regeneration of biofilm; continue to feed air or oxygen, and add trace element nutrient solution to realize the final renewal of biofilm; the formula of sai...

Embodiment 2

[0049] A method for repairing and renewing biofilm in a bioreactor for wastewater treatment, comprising the following steps:

[0050] 1) A vibrating sieve is set in the bioreactor, including a sieve body, a base, a shelf, several springs, vibration power, and a transmission rod. Biofilm, several springs are set between the base and the shelf, the transmission rod is connected between the vibrating power and the shelf, and the vibrating screen is connected with the electric control system. The vibration power is turned on through the electronic control system, and the vibration power drives the transmission rod to start the vibrating screen. The vibrating screen vibrates the biofilm regularly and continuously, so that the aging and loose biofilm and the waste water sludge accumulated here will fall off and then discharged. ;

[0051] 2) Add anaerobic and / or aerobic strains to the above-mentioned vibrating screen where the suspended packing is placed, and continue to feed air or ...

Embodiment 3

[0058] A method for repairing and renewing biofilm in a bioreactor for wastewater treatment, comprising the following steps:

[0059] 1) A vibrating sieve is set in the bioreactor, including a sieve body, a base, a shelf, several springs, vibration power, and a transmission rod. Biofilm, several springs are set between the base and the shelf, the transmission rod is connected between the vibrating power and the shelf, and the vibrating screen is connected with the electric control system. The vibration power is turned on through the electronic control system, and the vibration power drives the transmission rod to start the vibrating screen. The vibrating screen vibrates the biofilm regularly and continuously, so that the aging and loose biofilm and the waste water sludge accumulated here will fall off and then discharged. ;

[0060] 2) Add anaerobic and / or aerobic strains to the above-mentioned vibrating screen where the suspended packing is placed, and continue to feed air o...

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Abstract

The invention relates to a method for repairing and regenerating an aged suspended biological membrane filler. The biological membrane filler is used for a biological reactor for waste water treatment. The method comprises the following steps of: (1) taking the aged biological membrane suspended biological filler inside a biological membrane rector out, and airing; (2) starting a vibrating screen so that an aged and loose biological membrane and sludge accumulated on the aged and loose biological membrane are drooped and then discharged; (3) carrying out acid-alkaline chemical elution: firstly adopting mixed acid elution, and then adopting alkaline elution; (4) further eluting by using an enzyme preparation, wherein the enzyme preparation is a proteolytic enzyme; (5) airing the filler treated in the step (4), and placing the filler back to the biological membrane reactor; (6) regenerating the biological membrane: introducing air or oxygen, and adding a trace element nutrient solution to realize the final updating of the biological membrane. The method disclosed by the invention can be used for removing the aged and scaled biological membrane positioned on the surface of the suspended filler and effectively and fast realizing the updating reutilization of the biological filler.

Description

technical field [0001] The invention relates to the fields of environmental biotechnology and water treatment technology, in particular to a method for repairing and regenerating biofilm fillers. Background technique [0002] The increasingly serious environmental pollution is threatening the water sources and water bodies that human beings rely on for survival. In the face of the current situation of my country's water resources, the country has introduced more practical measures and regulations related to pollution control and emission reduction, and the restoration of polluted or facing polluted water resources is even more important. At present, when biofilm reactors are used to treat wastewater, because the wastewater may contain high salinity and various harmful substances, they not only accumulate in large quantities in the biofilm microorganisms on the filler, but also adhere to the surface of the filler in the form of microcrystals. , so that the biofilm is firmly ...

Claims

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Application Information

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IPC IPC(8): C02F3/10C02F3/00
CPCC02F3/00C02F3/10C02F2203/004C02F2303/20Y02W10/10
Inventor 耿金菊任洪强许柯丁丽丽黄辉
Owner NANJING UNIV
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