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Method and equipment for treatment of polluted fluid

A treatment method and fluid treatment technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve unstable effluent water quality, serious membrane pollution, large floor area, etc. problems, to achieve the effect of good water quality, good water quality, and small footprint

Inactive Publication Date: 2005-01-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a treatment method and equipment for polluted fluid, so as to solve the shortcomings of serious membrane pollution, large floor area, high cost and unstable effluent quality in the current technology.

Method used

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  • Method and equipment for treatment of polluted fluid
  • Method and equipment for treatment of polluted fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Starch wastewater is treated in the following ways:

[0025] (1) Ferrous sulfate is added in the bioreactor, and the concentration of the solution in the reactor is 700mg / L, domesticated to form bio-iron sludge, and the pollutants are condensed into particles;

[0026] (2) Use the activated sludge in the bioreactor to carry out biochemical action to remove the pollutants in the polluted fluid. The hydraulic retention time of the operation is 10 hours, the sludge age is 20 days, and the sludge concentration is stable at 7g / L;

[0027] (3) Use polyvinylidene fluoride 0.2 μm hollow fiber membrane module for filtration;

[0028] (4) Recycled cleaning fluid is obtained.

[0029] project

[0030]

Embodiment 2

[0032] Use the following methods to treat printing and dyeing wastewater (alkali-containing waste water):

[0033] (1) Ferric hydroxide is added in the bioreactor, the concentration of the solution in the reactor is 175mg / L, domesticated to form bio-iron sludge, and the pollutants are condensed into particles;

[0034] (2) Use the activated sludge in the bioreactor for biochemical action to remove the pollutants in the polluted fluid. The hydraulic retention time of the operation is 15 hours, the sludge age is 20 days, and the sludge concentration is stable at 3.5g / L;

[0035] (3) Use polyvinylidene fluoride 0.2 μm hollow fiber membrane module for filtration;

[0036] (4) Recycled cleaning fluid is obtained.

[0037]

Embodiment 3

[0039] Domestic sewage is treated in the following ways:

[0040] (1) Ferric chloride is added in the bioreactor, the concentration of the reactor is 40mg / L, domesticated to form biological iron sludge, and the pollutants are condensed into particles;

[0041] (2) Use the activated sludge in the bioreactor to carry out biochemical action to remove the pollutants in the polluted fluid. The hydraulic retention time of the operation is 6 hours, the sludge age is 100 days, and the sludge concentration is stable at 4g / L;

[0042] (3) The membrane module adopts polyvinylidene fluoride 0.2μm hollow fiber membrane module;

[0043] (4) Recycled cleaning fluid is obtained.

[0044]

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Abstract

The invention relates to an apparatus and process for disposing waste water containing organics, nitrogen and phosphor, wherein the apparatus comprises, an anaerobic rotting tank for separating solid substance from the sewage water and waste water, a flow capacity adjustment tank for controlling the load variation of flowing-in waste water, a first, second and third intermittent aeration reaction tank for treating organics, nitrogen and phosphor, a sediment concentration tank for concentrating the solid body and microorganism in the backwashed exhaust, and a drainage tank for sterilizing and draining the water treated by the reaction tank.

Description

technical field [0001] The invention relates to a treatment method and equipment for polluted fluid, in particular to a treatment method and equipment for polluted fluid by biological iron method-membrane bioreactor. Background technique [0002] Although the biochemical and physical chemical methods commonly used at present have proved to be an effective method, due to the use of gravity sedimentation tanks as a solid-liquid separation method for treating water and sludge, the quality of the effluent is often unstable, and three-stage treatment is required to achieve Water reuse standards, and the new membrane bioreactor combination process has shown strong advantages, but because membrane fouling and energy consumption are common problems encountered in the application and promotion of membrane bioreactors, seeking membrane fouling prevention and control technology has become a An important direction of current membrane bioreactor research. [0003] In order to solve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F9/14
CPCY02W10/10
Inventor 奚旦立冀世锋陈季华茹临锋
Owner DONGHUA UNIV
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