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Catalytic oxidation treatment method of reverse-osmosis strong brine

A treatment method and catalytic oxidation technology, applied in the directions of oxidized water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of poor catalytic effect of ozone oxidation catalysts, and achieve the effect of improving catalytic efficiency

Inactive Publication Date: 2016-07-06
POTEN ENVIRONMENT GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the invention discloses a catalytic oxidation treatment method for reverse osmosis concentrated brine, which is used to solve the problem of poor catalytic effect of the ozone oxidation catalyst

Method used

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  • Catalytic oxidation treatment method of reverse-osmosis strong brine
  • Catalytic oxidation treatment method of reverse-osmosis strong brine

Examples

Experimental program
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Effect test

Embodiment 1

[0039] The waste water comes from the reverse osmosis concentrated brine of a refinery project of Poten Environment Group Co., Ltd. Wastewater initial water quality index: COD Cr (Using potassium dichromate (K 2 Cr 2 o 7 ) measured as an oxidizing agent (ChemicalOxygenDemand)) is 303.7mg / L, the chromaticity is 64 times, and the turbidity is 1.285NTU.

[0040] Take 1L of waste water, measure the pH value of the waste water, the pH value is 7.4. In the ozone contact oxidation tower, add 0.3g of granular fruit shell activated carbon with a particle size of 0.3mm, which is loaded with manganese and nickel ozone oxidation catalysts. Ozone is introduced into the bottom of the ozone contact oxidation tower for continuous aeration. The ozone flow rate is 0.80L / min, the dosage is 360mg, in this case, the ozone oxidation catalyst presents a stable flow state. 100mg of hydrogen peroxide is divided into four equal parts, and evenly dosed at the same time in the four dosing ports wher...

Embodiment 2

[0043] The waste water comes from the reverse osmosis concentrated brine of a refinery project of Poten Environment Group Co., Ltd. Wastewater initial water quality index: COD Cr It is 298.4mg / L, the color is 64 times, and the turbidity is 1.296NTU.

[0044] Take 2L of waste water, measure the pH value of the waste water, and the pH value is 6.5. In the ozone contact oxidation tower, add 1g of ozone oxidation catalyst with a particle size of 0.5mm on the granular porous ceramics loaded with iron, nickel, and copper, and pass ozone into the bottom of the ozone contact oxidation tower for continuous aeration, and the ozone flow rate is 1.20 L / min, the dosage is 474mg, in this case, the ozone oxidation catalyst presents a stable flow state. 400mg of sodium hypochlorite is divided into four equal parts, and is uniformly added to the four dosing ports on the outer wall of the ozone contact oxidation tower at the same time. for 45min.

[0045] After the reaction, collect the eff...

Embodiment 3

[0047] The waste water comes from the reverse osmosis concentrated brine of a refinery project of Poten Environment Group Co., Ltd. Wastewater initial water quality index: COD Cr It is 289.4mg / L, the color is 64 times, and the turbidity is 1.289NTU.

[0048] Take 1L of waste water, measure the pH value of the waste water, the pH value is 8.8. In the ozone contact oxidation tower, 0.9g of coal-based columnar activated carbon with a particle size of 0.4mm is loaded with an ozone oxidation catalyst of iron, cerium, cobalt, and copper, and ozone is continuously aerated at the bottom of the ozone contact oxidation tower. The flow rate is 1.30L / min, and the dosage is 200mg. In this case, the ozone oxidation catalyst presents a stable flow state. 260mg of sodium hypochlorite is divided into four equal parts, and is uniformly added to the four dosing ports on the outer wall of the ozone contact oxidation tower at the same time. It is 55min.

[0049] After the reaction, collect the...

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Abstract

The embodiment of the invention discloses a catalytic oxidation treatment method of reverse-osmosis strong brine. The method includes the following steps of measuring the pH value of reverse-osmosis strong brine, introducing reverse-osmosis strong brine into an ozone contact oxidation tower when the pH value of reverse-osmosis strong brine is 2 to 10, adding compound multi-element oxidant into the tower, and conducting sufficient contact reaction on reverse-osmosis strong brine, continuous aeration ozone, a liquid ozone oxide catalyst and compound multi-element oxidant in the ozone contact oxidation tower for 10-80 minutes. The ozone contact oxidation tower is designed vertically, a water inlet is formed in the upper portion of the tower, a water outlet is formed in the lower portion of the tower, an ozone aeration head is arranged at the bottom of the tower, a bearing layer is arranged in the tower and filled with an ozone oxidation catalyst, and an addition opening of compound multi-element oxidant is formed in the outer wall of the tower. By means of the method, the mass transfer effect of gas, liquid and solid is enhanced, and the catalysis efficiency of the ozone oxidation catalyst is greatly improved.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a catalytic oxidation treatment method for reverse osmosis concentrated brine. Background technique [0002] Reverse osmosis technology uses the characteristics of selective permeability of reverse osmosis membrane to filter and concentrate surface water or advanced treated sewage, filter out salt, organic matter and other particulate impurities in water, and realize water purification or reclaimed water reuse. Purpose. In the process of reverse osmosis treatment, a large amount of concentrated brine will be produced, and the water volume of concentrated brine usually accounts for 1 / 3 of the reused water. Direct discharge without treatment will cause waste of water resources, and will also pollute the surrounding environment. Therefore, it is particularly urgent to recycle the concentrated brine of reverse osmosis. [0003] Ozone technology is the mainstream wastew...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78C02F1/72
CPCC02F1/725C02F1/78C02F2201/78C02F2201/784
Inventor 乔瑞平耿翠玉陈广升蒋玮
Owner POTEN ENVIRONMENT GRP
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