An online chemical oxidation dynamic membrane wastewater treatment system

A treatment system and dynamic membrane technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., to achieve low operating costs, simplified process units, and simple operations

Inactive Publication Date: 2017-06-30
BINZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Other similar patents are biofilm technology, that is, a biofilm reactor system similar in structure, but the core principle of this technology is: use solid-phase membrane separation technology to intercept and separate the remaining sludge to be discharged from the system, replacing the original two Settling tanks and other separation equipment, while the treatment of pollutants in sewage is still based on the biodegradation of activated sludge, and does not involve dynamic membranes, which is different from the present invention

Method used

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  • An online chemical oxidation dynamic membrane wastewater treatment system
  • An online chemical oxidation dynamic membrane wastewater treatment system
  • An online chemical oxidation dynamic membrane wastewater treatment system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First add hydrogen peroxide in the hydrogen peroxide head tank (1), keep the pH value of 3.0-5.0, to prevent the device from decomposing before operation; add 2000 mesh hematite powder (basement membrane aperture is 0.5-3.0 microns), add 10% caustic soda (wastewater is pesticide waste water, acid concentration is higher, COD Cr Higher), and then dosing in proportion to the circulation tank (4) where the pesticide wastewater has been stored. After the liquid level reaches the operating conditions, start the circulation pump (5) to supply liquid to the membrane and membrane module (6), and start the circulation filtration operation , the membrane used is a 19-channel ceramic microfiltration membrane with a pore size of 0.5-3.0 microns. The ceramic membrane in the module is placed vertically, the water enters the bottom of the circulation side, and the water exits the upper part. Every 19 membrane tubes form a module, and the circulation return valve is opened. And accordi...

Embodiment 2

[0023]Add hydrogen peroxide and an appropriate amount of acid in the hydrogen peroxide head tank (1), keep the pH value at 3.0-5.0, so as not to decompose the hydrogen peroxide; add ferric oxide ( basement membrane pore size is 0.05-0.5 micron), add 10% hydrochloric acid (treatment of flax production wastewater, strong alkalinity) in the pH adjustment head tank (3), and then add in proportion to the circulation tank that has stored the flax production wastewater ( 4), start the circulating pump (5), supply liquid to the membrane and the membrane module (6), and start the circulating filtration operation. The membrane used is a plate-type ceramic microfiltration membrane with a pore size of 0.05-0.5 microns, and the ceramic membrane in the module is placed horizontally. The sheet ceramic membrane is a unit, and the circulation return valve is opened, and the parameters are controlled and adjusted by the detection and control device (8) of flow (L), temperature (T), pressure (P),...

Embodiment 3

[0025] Add hydrogen peroxide and an appropriate amount of hydrochloric acid in the hydrogen peroxide head tank (1), keep the pH value at 3.0-5.0, and prevent the hydrogen peroxide from decomposing; Membrane pore size is 0.01-0.05 micron), add 10% hydrochloric acid (the raw material wastewater is printing and dyeing wastewater, alkaline) into the pH adjustment head tank (3), and then add in proportion to the circulation tank (4) where the printing and dyeing wastewater has been stored , start the slurry pump (5), supply liquid to the ceramic ultrafiltration membrane module (6), and start circulating filtration operation. The membrane used is a 37-channel ceramic ultrafiltration membrane with a pore size of 0.01-0.05 microns, and every 19 ceramic membrane tubes form one Unit, open the circulation return valve, and according to the operating parameters, the parameters are controlled and adjusted by the detection and control device (8) of flow (L), temperature (T), pressure (P), pH...

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Abstract

The invention discloses an on-line chemical oxidation dynamic membrane system that can be used for the treatment of refractory biodegradable wastewater, and is characterized in that the system includes a hydrogen peroxide head tank (1), an iron-containing ore powder mixing tank (2), and a pH adjustment head tank (3), circulation tank (4), circulation pump (5), membrane and membrane and components (6), recovery tank (7) and parameters such as flow (L) / temperature (T) / pressure (P) / pH Detection control device (8). The outlets of the hydrogen peroxide head tank, the iron-containing ore powder mixing tank and the pH adjustment head tank are all connected to the circulation tank, the outlet of the circulation tank is connected to the circulation pump, the outlet of the circulation pump is connected to the circulation side of the membrane and the membrane module, and the outlet of the circulation pump The temperature (T) / pressure (P) / flow (L) / pH and other parameters detection and control devices are installed on the pipeline, the outlet of the circulation side of the membrane and the membrane module is connected to the circulation tank, and the bottom of the circulation side of the membrane and the membrane module is provided with a sewage outlet , the sewage outlet is connected to the recovery tank, and the water produced on the water production side of the membrane and membrane modules is sent out of the system. The invention can greatly improve the quality of water produced by the basement membrane, simplify the treatment process, increase the removal rate of indicators such as chroma, TSS, CODCr, BOD5, and benzene series, significantly reduce the total amount of residual pollutants on the circulation side, and reduce the cost of sewage treatment.

Description

technical field [0001] The invention belongs to the technical field of refractory biodegradable wastewater treatment, and relates to the dynamic membrane technology in the membrane water treatment technology, in particular to a dynamic membrane filtration system with online formation, continuous transformation, catalytic reaction and adsorption, which is a dynamic membrane and A deeply coupled system of two technologies for Fenton oxidation. Background technique [0002] my country's per capita fresh water possession is low and the pollution of fresh water resources is becoming more and more prominent. Some of them are polluted by N and P and become eutrophic, or heavy metals are severely exceeded by industrial pollution, and even the pollutants are carcinogenic, teratogenic, and mutagenic substances. Dozens of pollutants are involved, posing a serious threat to water safety. The conventional water treatment process involves multiple units such as coagulation, sedimentation,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04
Inventor 刘学文李长海贾冬梅刘娟娟
Owner BINZHOU UNIV
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