Coupling technology for microelectrolysis-pressurized biofiltration treatment of industrial wastewater biochemical tail water

A technology for biological filtration and industrial wastewater, applied in filtration treatment, biological water/sewage treatment, sedimentation treatment, etc., can solve the problems of easy peeling off of the coating, uneven mud cake coating, complicated operation, etc., and achieve the improvement of microorganisms The effect of activity, small footprint and low operating cost

Active Publication Date: 2018-07-03
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this process is that ① it is necessary to use the activated sludge mixture added with diatomite powder or zeolite powder to form a pre-coated dynamic film on the surface of stainless steel mesh, nylon mesh or non-woven fabric, and the operation is more complicated; The mud cake coating is uneven and the coating is easy to fall off, resulting in unstable effluent water quality; ③ Excessive sludge will be generated during the coating regeneration process

Method used

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  • Coupling technology for microelectrolysis-pressurized biofiltration treatment of industrial wastewater biochemical tail water
  • Coupling technology for microelectrolysis-pressurized biofiltration treatment of industrial wastewater biochemical tail water
  • Coupling technology for microelectrolysis-pressurized biofiltration treatment of industrial wastewater biochemical tail water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: Micro-electrolysis-pressurized biological filtration coupling technology deeply treats the biochemical tail water of printing and dyeing wastewater. Using the biochemical tail water of an industrial park as the treatment object, the specific steps are as follows:

[0045] (1) Pretreatment of micro-electrolysis reactor:

[0046] Adjust the pH of the printing and dyeing wastewater biochemical tail water (taken from a printing and dyeing wastewater plant in Zhongshan City, Guangdong) to 3.5, and then send it to a micro-electrolysis reactor filled with new micro-electrolysis fillers, and control the dissolved oxygen concentration in the reactor to 1.5~2.5 mg / L, the hydraulic retention time is 1 hour. The pH of the effluent is adjusted to 7.8. After precipitation, the effluent enters the subsequent pressurized biological filter for processing;

[0047] The new micro-electrolytic filler is composed of the following components in parts by weight: iron powder 45, activate...

Embodiment 2

[0056] Example 2: Micro-electrolysis-pressurized biological filtration coupling technology deeply treats the biochemical tail water of the industrial park. Using the biochemical tail water of an industrial park as the treatment object, the specific steps are as follows:

[0057] (1) Pretreatment of micro-electrolysis reactor:

[0058] Adjust the pH of the biochemical tail water of the industrial park (taken from a sewage plant in an industrial park in Zhongshan, Guangdong) to 5.5 and send it to a micro-electrolysis reactor filled with new micro-electrolysis fillers, and control the dissolved oxygen concentration in the reactor to 2.5 mg / L, the hydraulic retention time is 2 hours. The pH of the effluent is adjusted to 8.8. After precipitation, the effluent enters the subsequent pressurized biological filter for treatment; among them:

[0059] The new micro-electrolytic filler is composed of the following components in parts by weight: iron powder 35, activated carbon 25, chalcopyri...

Embodiment 3

[0068] Example 3: Micro-electrolysis-pressurized biological filtration coupling technology deeply treats the biochemical tail water of the industrial park. Using the biochemical tail water of an industrial park as the treatment object, the specific steps are as follows:

[0069] (1) Pretreatment of micro-electrolysis reactor:

[0070] Adjust the pH of the biochemical tail water of the industrial park (taken from a sewage plant in an industrial park in Zhongshan, Guangdong) to 4.0 and send it to a micro-electrolysis reactor filled with new micro-electrolysis fillers, and control the dissolved oxygen concentration in the reactor to 1.5~ 2.5mg / L, hydraulic retention time is 1.5 hours. The pH of the effluent is adjusted to 8.3, and after precipitation, the effluent enters the subsequent pressurized biological filter for treatment; among them:

[0071] The new micro-electrolytic filler is composed of the following components in parts by weight: iron powder 38, activated carbon 15, chalc...

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Abstract

The invention discloses a coupling technology for microelectrolysis-pressurized biofiltration treatment of industrial wastewater biochemical tail water. The technology comprises the following steps: (1) pretreatment by using a microelectrolysis reactor: adjusting pH of the industrial wastewater biochemical tail water to 3.5-5.5, and feeding into the microelectrolysis reactor filled with microelectrolysis filler for pretreatment; and (2) pressurized biofiltration treatment: treating the yielding water pretreated by the microelectrolysis reactor in the step (1) by using a pressurized biofilter,wherein the pressurized biofilter is filled with microbial magnetic filler. According to the invention, the effect of removing pollutants is enhanced by improving the components, structure and shape of the microelectrolysis filler and by using the degradation effect of microelectrolysis, the activation effect of the pressurized bio-ferric and magnetic field on microorganisms, and the synergistic effect of the microelectrolysis and the pressurized biofilter. The coupling technology disclosed by the invention has the advantages of small floor space, low operation cost, high quality of yielding water, small sludge quantity and the like, and is suitable for advanced treatment of various industrial wastewater biochemical tail water.

Description

Technical field [0001] The invention belongs to the field of industrial wastewater treatment, and particularly relates to a coupling process of micro-electrolysis-pressurized biological filtration to treat industrial wastewater biochemical tail water. Background technique [0002] With the acceleration of our country’s industrialization process, the resulting industrial wastewater tail water puts greater pressure on the water environment. Although these biochemical tail waters have been subjected to physical and secondary biochemical treatments to remove a large amount of pollutants, they still remain A large number of difficult-to-degrade pollutants cause the secondary biochemical effluent to fail to meet the standard stably. At the same time, the need to improve the quality of the water environment in the river basin puts more stringent requirements on the drainage of wastewater treatment plants. Therefore, realizing the stable discharge of industrial wastewater treatment plan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/281C02F1/461C02F1/66C02F3/34C02F9/00C02F2001/007
Inventor 潘涌璋汤培炜
Owner JINAN UNIVERSITY
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