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Reverse osmosis concentrated water treatment process for Fenton reagent oxidation enhanced adsorption

A technology of reverse osmosis concentrated water and oxidation enhancement, which is applied in special compound water treatment, water/sewage treatment, water/sewage multi-stage treatment, etc. It can solve the problems of complex process flow, difficult operation, and large project investment, and achieve Efficient oxidation treatment, high operating cost, and large specific surface area

Inactive Publication Date: 2021-09-21
SHANGHAI HONESS ENVIRONMENTAL TECH CORP
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Problems solved by technology

[0037] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide the reverse osmosis concentrated water treatment process of Fenton reagent oxidation enhanced adsorption: by combining the Fenton reagent oxidation technology and activated carbon adsorption technology, fully utilizing the adsorption capacity of activated carbon, the reverse osmosis concentrated water The organic matter in the water diffuses and adsorbs into the micropore structure of activated carbon, and then the hydroxyl radicals generated by the oxidation of Fenton's reagent can be adsorbed into the micropore structure channels of activated carbon with low salinity to enrich and efficiently degrade organic pollutants, solving the problem of The existing methods for removing organic pollutants in reverse osmosis concentrated water generally have the disadvantages of relatively complicated process flow, large engineering investment, high energy consumption, difficult operation, low degradation efficiency, and high operating cost.

Method used

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  • Reverse osmosis concentrated water treatment process for Fenton reagent oxidation enhanced adsorption
  • Reverse osmosis concentrated water treatment process for Fenton reagent oxidation enhanced adsorption
  • Reverse osmosis concentrated water treatment process for Fenton reagent oxidation enhanced adsorption

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Embodiment 1

[0063] refer to figure 1 As shown, this embodiment is the reverse osmosis concentrated water treatment process of Fenton reagent oxidation enhanced adsorption. Cr The content is 82.16mg / L, the TDS content is 3250mg / L, and the salts included are mainly sodium chloride and sodium sulfate;

[0064] A1, Fenton reagent oxidation enhanced activated carbon adsorption: take nine 2000ml beakers, start the mechanical stirring, add 1000ml reverse osmosis concentrated water for experiment, add powdered activated carbon to the reverse osmosis concentrated water respectively, the dosage is 1.0g / L, Add ferrous sulfate at the same time, the dosage is 60mg / L, and then add different amounts of H to 9 reverse osmosis concentrated water samples 2 o 2 , H 2 o 2 The dosages are 0mg / L, 5mg / L, 10mg / L, 15mg / L, 20mg / L, 30mg / L, 40mg / L, 50mg / L, 60mg / L, and the reaction starts, and the reaction time is 30min respectively;

[0065] After the reaction, take the supernatant to measure COD Cr value, see...

Embodiment 2

[0070] refer to figure 1 As shown, this embodiment is the reverse osmosis concentrated water treatment process of Fenton reagent oxidation enhanced adsorption. Cr The content is 84.56mg / L, the TDS content is 4230mg / L, and the salts included are mainly sodium chloride and sodium sulfate.

[0071] Including the following steps:

[0072] B1, Fenton reagent oxidation enhanced activated carbon adsorption: take 10 2000ml beakers, start the mechanical stirring, add 1000ml of reverse osmosis concentrated water for experiment, add powdered activated coke amount of 0.6g and powdered activated carbon amount to the reverse osmosis concentrated water respectively 0.5g, while adding 27% H 2 o 2 solution, the dosage is 33ml, and different amounts of FeSO with a mass fraction of 10% are added to 10 reverse osmosis concentrated water samples. 4 ·7H 2 O solution, where FeSO 4 ·7H 2 The dosage of O is 10mg / L, 20mg / L, 30mg / L, 40mg / L, 50mg / L, 60mg / L, 70mg / L, 80mg / L, 90mg / L, 100mg / L, and the...

Embodiment 3

[0078] This embodiment is a reverse osmosis concentrated water treatment process with Fenton reagent oxidation enhanced adsorption. This embodiment is an engineering scale-up test with continuous water inflow and a test period of 48 hours. The size of the activated carbon oxidation adsorption pool is 8500×8500×5000mm, the effective water depth is 4200mm, and the effective volume is 300m 3 Calculated, the activated carbon oxidation adsorption tank is stirred by aeration; the size of the coagulation sedimentation tank is 8500×8500×5000mm, the effective water depth is 4200mm, and the effective volume is 300m 3 Calculation; regeneration reaction adopts PE tank with a volume of 20m 3 ;The size of catalyst A and oxidant B dosing pools are both 2200×2200×5000mm, with a total volume of 20m 3 . Both flocculant C and coagulant D are made of PE tanks with a volume of 1.0m 3 ;Water inflow rate is 80~150m 3 / h, the residence time of the activated carbon oxidation adsorption pool is 120...

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Abstract

The invention discloses a reverse osmosis concentrated water treatment process for Fenton reagent oxidation enhanced adsorption, and relates to the technical field of industrial wastewater treatment. An activated carbon adsorption technology can effectively adsorb organic matters in reverse osmosis concentrated water, and a Fenton reagent oxidation technology utilizes high-activity free radicals to attack macromolecular organic matters and react with the macromolecular organic matters, so that organic matter molecular structures are destroyed; According to the process, Fenton reagent oxidation and activated carbon adsorption technologies are combined, the organic matters in reverse osmosis concentrated water are diffused and adsorbed into a microporous structure of activated carbon by the activated carbon, and then the hydroxyl radicals generated by Fenton reagent oxidation can efficiently degrade organic pollutants in the microporous structure of the activated carbon. The Fenton reagent oxidation enhanced activated carbon adsorption can achieve a good synergistic effect, the saturated adsorption capacity and the adsorption efficiency of the activated carbon are improved, and the deep treatment efficiency of the reverse osmosis concentrated water is improved.

Description

technical field [0001] The present invention relates to the technical field of industrial wastewater treatment, in particular to the treatment of concentrated water produced in industrial enterprises using nanofiltration or reverse osmosis to produce recycled water, in particular to a process for treating reverse osmosis concentrated water, more specifically A reverse osmosis concentrated water treatment process involving oxidation-enhanced adsorption of Fenton's reagent. Background technique [0002] In recent years, due to the rapid construction and development of coal chemical projects and some other industrial projects, water consumption and wastewater discharge have also increased rapidly, especially where most of the coal chemical projects are short of water and the ecological environment is very fragile. Therefore, the recycling of water resources The problem of waste water discharge is very prominent, and the problem of zero discharge of saline concentrated water has...

Claims

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Application Information

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IPC IPC(8): C02F9/04
CPCC02F9/00C02F1/283C02F1/725C02F1/722C02F1/5245C02F1/56C02F2305/026C02F2303/16
Inventor 乔瑞平王文标
Owner SHANGHAI HONESS ENVIRONMENTAL TECH CORP
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