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Dynamic preparation method of nascent-state nanometer layered manganese catalyst and application in enhanced oxidation filtration

A nano-layered, manganese catalyst technology, applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of difficult to meet the removal of various types of heavy metal pollution, poor removal of heavy metals, long aging cycle, etc. Achieve the effect of simple and easy construction process, considerable economic benefits and little impact

Active Publication Date: 2021-09-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that the existing manganese removal technology is difficult to meet the needs of removing various types of heavy metal pollution, and the aging period is long, the amount of chlorine input is large, the catalytic activity is low and the effect of removing heavy metals is poor, and a nano-layered Preparation method and application of manganese catalyst

Method used

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  • Dynamic preparation method of nascent-state nanometer layered manganese catalyst and application in enhanced oxidation filtration
  • Dynamic preparation method of nascent-state nanometer layered manganese catalyst and application in enhanced oxidation filtration
  • Dynamic preparation method of nascent-state nanometer layered manganese catalyst and application in enhanced oxidation filtration

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specific Embodiment approach 1

[0032] Specific embodiment one: the dynamic preparation method of a kind of new ecological nano-layered manganese catalyst in this embodiment is completed according to the following steps:

[0033] 1. Adsorption:

[0034] The porous zeolite particles were immersed in the divalent manganese solution under the condition of reciprocating vibration to adsorb Mn 2+ , after the adsorption is completed, the divalent manganese solution is discarded, and the adsorbed Mn 2+ zeolite particles;

[0035] 2. Preparation of manganese-loaded zeolite particles:

[0036] will be adsorbed with Mn 2+ The zeolite particles were immersed in the mixed solution of potassium permanganate and alkali for adsorption, rinsed after the adsorption was completed, and then dried naturally to obtain manganese-loaded zeolite particles;

[0037] 3. Construct manganese-loaded zeolite filter column, manganese-loaded zeolite filter tank or manganese-loaded zeolite filter pool:

[0038] Manganese-loaded zeolite...

specific Embodiment approach 2

[0046] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the particle diameter of the porous zeolite particles described in step one is 0.01mm~10mm, the porosity is 30%~75%, and the pore diameter is 0.3nm~1nm ; The speed of the reciprocating oscillation described in step 1 is 50 rpm to 500 rpm, and the amplitude is 10 mm to 30 mm. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0047] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the divalent manganese solution described in step one is one of manganese sulfate solution, manganese nitrate solution and manganese chloride solution or one of them Several mixed solutions; the concentration of the divalent manganese solution described in step 1 is 0.01mol / L-1mol / L; the adsorption time described in step 1 is 0.1h-72h. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a dynamic preparation method and an application in enhanced oxidation filtration, and relates to a preparation method and enhanced oxidation filtration application of a catalyst. The invention aims to solve the problems that the existing manganese removal technology is difficult to meet the requirement of removing various heavy metal pollution, and is long in curing period, large in chlorine feeding amount, low in catalytic activity and poor in heavy metal removal effect. The method comprises: 1, performing adsorption; 2, preparing manganese-loaded zeolite particles; 3, constructing a manganese-loaded zeolite filter column, a manganese-loaded zeolite filter tank or a manganese-loaded zeolite filter tank; 4, dynamically constructing a zeolite filter column, a zeolite filter tank or a zeolite filter tank containing the nascent nano layered manganese catalyst. The nano layered manganese catalyst is used to remove heavy metals from heavy metal-containing water. The removal rate of the prepared nascent-state nanometer layered manganese catalyst on iron, arsenic, thallium, molybdenum and lead reaches 95% or above, and it can be guaranteed that effluent stably reaches the standard for a long time. The invention can produce the nascent-state nanometer layered manganese catalyst.

Description

technical field [0001] The invention relates to a preparation method of a catalyst and an application of enhanced oxidation filtration. Background technique [0002] Soluble manganese (Mn 2+ ) Exceeding the standard is a common problem in groundwater. In recent years, due to economic development, surface water such as rivers, rivers, lakes, and reservoirs has become severely eutrophicated, resulting in the release of soluble manganese in the sediment, and seasonal manganese exceeding the standard. On the other hand, due to groundwater The problem of recharge, Mn in surface water 2+ It is easy to seep into groundwater, causing manganese pollution in groundwater; heavy metals such as iron and arsenic coexisting in surface water and groundwater further aggravate the complexity of manganese pollution. The interactive manganese pollution of surface water and groundwater leads to excessive manganese in factory water, which has been a major problem faced by drinking water plants ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/00B01J20/16C02F9/04C02F1/72C02F1/00C02F1/28C02F101/20C02F103/06
CPCB01J29/00B01J20/16C02F9/00C02F1/725C02F1/001C02F1/281C02F2101/20C02F2101/203C02F2103/001C02F2103/06C02F2101/206B01J2229/18
Inventor 王盼盼马军王晗刘晴靓张云飞伊俊达
Owner HARBIN INST OF TECH
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