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A high-efficiency catalytic sodium hypochlorite reclaimed water treatment process based on a composite catalytic bed

A technology for catalyzing sodium hypochlorite and composite catalytic bed, which is applied in the directions of oxidized water/sewage treatment, water/sewage treatment, water/sludge/sewage treatment, etc. Achieve the effect of improving applicability, improving catalytic activity and reducing loss

Active Publication Date: 2018-12-04
HUANENG JIAXIANG POWER GENERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reclaimed water is usually the effluent of the biological pool, which meets the secondary discharge standard. There will still be certain pollutants in the reclaimed water. These pollutants are usually mainly organic substances that are difficult to biodegrade, and such organic substances will affect the subsequent use of reclaimed water. At present, due to the lack of efficient and cheap removal methods, it will have a certain impact on the reuse of reclaimed water

Method used

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  • A high-efficiency catalytic sodium hypochlorite reclaimed water treatment process based on a composite catalytic bed
  • A high-efficiency catalytic sodium hypochlorite reclaimed water treatment process based on a composite catalytic bed
  • A high-efficiency catalytic sodium hypochlorite reclaimed water treatment process based on a composite catalytic bed

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Effect test

Embodiment 1

[0028] Example 1 A high-efficiency catalytic sodium hypochlorite water treatment system based on a composite catalytic bed

[0029] Such as figure 1 As shown, the present invention provides a kind of high-efficiency catalytic sodium hypochlorite reclaimed water treatment system based on composite catalytic bed, comprising oxidation tower 1, activated carbon catalyst bed 2, reclaimed water storage tank 3, reclaimed water inlet 4, molecular sieve catalyst bed 5, Reclaimed water outlet 6, liquid mixer 7, outlet water storage tank 8, sodium hypochlorite storage tank 9, lift pump 10, oxidation tower sealing port 11.

[0030] Described reclaimed water storage tank 3 is used for storing reclaimed water, and described sodium hypochlorite storage tank 9 is used for storing sodium hypochlorite solution, and described reclaimed water storage tank 3 is communicated with liquid mixer 7 by lift pump 10, and described sodium hypochlorite storage tank 9 is lifted Pump 10 communicates with li...

Embodiment 2

[0036] Embodiment 2 A kind of high-efficiency catalytic sodium hypochlorite water treatment process based on composite catalytic bed, comprises the following steps:

[0037] (1) Catalyst preparation: Put the powders of nickel nitrate, iron nitrate and magnesium nitrate into a ball mill to grind and mix them evenly, then prepare the mixed powder into two parts of 5% aqueous solution, put molecular sieve and activated carbon into it respectively, soak for 12 hours, Drying, then calcining in a muffle furnace, and cooling to obtain activated carbon catalysts and molecular sieve catalysts;

[0038] Wherein, the mass ratio of nickel nitrate, ferric nitrate, magnesium nitrate is 5:2:1;

[0039] MCM41 type molecular sieves are used for molecular screening, and the specific surface area of ​​specific molecular sieves exceeds 1000m 2 / g, the relative crystallinity exceeds 90%, the loss on ignition does not exceed 5%, and the pore size is distributed within the range of 2-5nm.

[0040]...

Embodiment 3

[0059] Example 3 A kind of application of water treatment in high-efficiency catalytic sodium hypochlorite based on composite catalytic bed

[0060] The present invention is described in detail below according to the facts, and the implementation effect of the present invention is as follows.

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Abstract

The invention discloses a composite catalyst bed layer based efficient catalytic sodium hypochlorite reclaimed water treatment system. The system comprises an oxidation tower internally provided withan activated carbon catalyst bed layer and a molecular sieve catalyst bed layer. The invention further discloses a composite catalyst bed layer based efficient catalytic sodium hypochlorite reclaimedwater treatment process. A sodium hypochlorite activating effect of a catalyst bed layer is realized, the content of refractory organics in reclaimed water is effectively decreased, and deep treatmentof reclaimed water is realized. Catalyst utilization efficiency is greatly improved, sodium hypochlorite oxidation effects are remarkably improved, mechanical strength and surface antifouling performance are both improved effectively, catalyst loss in a utilization process is avoided, and stability of the process is effectively improved. By adoption of the process, catalyst utilization efficiencyis completely guaranteed, the catalyst bed layer can be used for treatment of various types of urban reclaimed water, a catalyst utilization period is prolonged, and applicability of the process is greatly improved.

Description

technical field [0001] The invention relates to a sodium hypochlorite reclaimed water treatment system, in particular to a high-efficiency catalytic sodium hypochlorite reclaimed water treatment system based on a composite catalytic bed layer and a process thereof, belonging to the technical field of reclaimed water treatment. Background technique [0002] As more and more water bodies are polluted, and society's demand for water is increasing, therefore, reuse of reclaimed water has become an important way to solve the current problem of water use. However, the reclaimed water is usually the effluent of the biological pool, which meets the secondary discharge standard. There will still be certain pollutants in the reclaimed water. These pollutants are usually mainly organic substances that are difficult to biodegrade, and such organic substances will affect the subsequent use of reclaimed water. At present, due to the lack of efficient and cheap removal methods, it will hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/76
CPCC02F1/725C02F1/766
Inventor 岳增刚王钢李进宏
Owner HUANENG JIAXIANG POWER GENERATION CO LTD
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