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Compound manganese sand deironing and manganese-removing filter material and preparation method thereof

The technology of manganese sand and filter material is applied in the field of composite manganese sand for iron and manganese removal filter material and its preparation. , the effect of reducing the specific gravity and increasing the running time

Inactive Publication Date: 2017-05-24
云南沃润特环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a composite manganese sand filter material for removing iron and manganese and its preparation method, which solves the problem that the existing filter materials such as manganese sand, quartz sand, anthracite filter material have general effects in removing iron and manganese, and are difficult to backwash and regenerate. question

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  • Compound manganese sand deironing and manganese-removing filter material and preparation method thereof
  • Compound manganese sand deironing and manganese-removing filter material and preparation method thereof

Examples

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Embodiment 1

[0038] A composite manganese sand iron and manganese removal filter material, in parts by weight, comprising 35 parts of manganese sand, 10 parts of modified medical stone, 30 parts of modified quartz sand, 60 parts of modified anthracite filter material, and 15 parts of modified activated carbon parts, 10 parts of kaolin.

[0039] The preparation method of described modified medical stone:

[0040] (1) crush the medical stone to 80-100 mesh, set aside;

[0041] (2) heat-treat the pulverized medical stone at 250 degrees for 2 hours, and then cool it;

[0042] (3) the medical stone after cooling is soaked 4h with the sulfuric acid solution of 2mol / L;

[0043](4) Washing and drying the acid-soaked medical stone granules to obtain the modified medical stone.

[0044] The preparation method of described modified quartz sand:

[0045] (1) Soak the quartz sand with a particle size of 80-100 mesh in a NaOH solution with a mass concentration of 10%, and shake it in a constant temp...

Embodiment 2

[0062] A composite manganese sand filter material for removing iron and manganese, comprising 30 parts by weight of manganese sand, 13 parts of modified medical stone, 25 parts of modified quartz sand, 50 parts of modified anthracite filter material, and 18 parts of modified activated carbon parts, 9 parts of kaolin.

[0063] The preparation method of described modified medical stone:

[0064] (1) crush the medical stone to 80-100 mesh, set aside;

[0065] (2) heat-treat the pulverized medical stone at 280 degrees for 1.8 hours, and then cool it;

[0066] (3) the medical stone after cooling is soaked 4h with the sulfuric acid solution of 3mol / L;

[0067] (4) Washing and drying the acid-soaked medical stone granules to obtain the modified medical stone.

[0068] The preparation method of modified quartz sand:

[0069] (1) Soak quartz sand with a particle size of 80-100 mesh in NaOH solution with a mass concentration of 8%, and shake in a constant temperature shaking shaker ...

Embodiment 3

[0086] A composite manganese sand iron and manganese removal filter material, in parts by weight, comprising 35 parts of manganese sand, 14 parts of modified medical stone, 20 parts of modified quartz sand, 55 parts of modified anthracite filter material, and 15 parts of modified activated carbon parts, 10 parts of kaolin.

[0087] The preparation method of described modified medical stone:

[0088] (1) crush the medical stone to 80-100 mesh, set aside;

[0089] (2) The medical stone after pulverizing is carried out heat treatment at 300 degree, time 1.5, then cooling;

[0090] (3) the medical stone after cooling is soaked 5h with the sulfuric acid solution of 2.5mol / L;

[0091] (4) Washing and drying the acid-soaked medical stone granules to obtain the modified medical stone.

[0092] The preparation method of modified quartz sand:

[0093] (1) Soak the quartz sand with a particle size of 80-100 mesh in a NaOH solution with a mass concentration of 9%, and shake it in a co...

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Abstract

The invention relates to a compound manganese sand deironing and manganese-removing filter material and a preparation method thereof. The filter material comprises 30-40 parts of manganese sand, 10-15 parts of modified medical stone, 20-30 parts of modified quartz sand, 50-60 parts of modified anthracite filter material, 10-15 parts of modified activated carbon and 8-10 parts of kaolin. The medical stone, the quartz sand, the modified activated carbon and the modified anthracite filter material are adopted as raw materials; through a special modification process, the superficial area of the medical stone, the quartz sand, the anthracite and the activated carbon is expanded, and the adsorption rate is effectively improved; on one hand, the limitation of the manganese sand by a conventional deironing and manganese-removing processor is changed, and the water treatment cost is effectively reduced; on the other hand, due to the adoption of the compound material, the proportion of the filter material can be effectively reduced, and the backwash water consumption and regeneration difficulty are effectively reduced; compared with a manganese sand filter material and a quartz sand filter material, the compound manganese sand deironing and manganese-removing filter material greatly improves adsorbing capacity, and the running time is greatly prolonged.

Description

technical field [0001] The invention relates to a filter material for water treatment, in particular to a composite manganese sand filter material for removing iron and manganese and a preparation method thereof. Background technique [0002] Groundwater is generally weakly acidic and in an anoxic state. When groundwater flows through soil, minerals, and rocks, due to physical and chemical effects, groundwater often contains iron and manganese. In 2013, there were 835 centralized drinking water sources in 309 prefecture-level and above cities across the country to collect water statistics. The main indicators of groundwater sources exceeding the standard were iron, manganese and ammonia nitrogen. The survey found that my country's iron-manganese groundwater accounts for 20% of the total groundwater. The sources of iron and manganese in groundwater are generally divided into anthropogenic and natural sources. Man-made sources are generally that iron and manganese produced b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/20
CPCB01J20/20B01J20/0222B01J20/103B01J20/16C02F1/281C02F2101/203C02F2101/206
Inventor 岳桂存李树琼
Owner 云南沃润特环境工程有限公司