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Iron-removing and manganese-removing suspended filter material and preparation method thereof

A technology for suspending filter material and manganese sand, applied in chemical instruments and methods, sustainable biological treatment, water/sludge/sewage treatment, etc., can solve the problems of increasing operating costs, wasting water resources, and high density of manganese sand, etc. To achieve the effect of reducing equipment cost, reducing equipment pressure and improving backwashing

Active Publication Date: 2014-11-19
海南甘泉实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing filter media for removing iron and manganese relatively has the following defects in the process of water treatment system: (1) due to the high density of manganese sand, it cannot be suspended in the water of the manganese sand tank, but piled up and precipitated in the manganese sand The bottom of the tank reduces the contact area of ​​manganese sand per unit volume with water, which affects its working efficiency
(2) Due to the large specificity of manganese sand, the equipment needs a very firm support and a supporting material with sufficient hardness. The requirements for the manufacture and installation of the equipment are high, and the cost also increases accordingly
(3) At the same time, a large amount of high-pressure water is required for backwashing, which increases the operating requirements of the equipment, increases operating costs, reduces the proportion of water production, and wastes water resources

Method used

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  • Iron-removing and manganese-removing suspended filter material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 A suspension filter material for removing iron and manganese, which is composed of the following components in parts by weight:

[0025] Manganese sand 650 parts;

[0026] 80 parts of expanded perlite;

[0027] 20 parts of plastic particles.

[0028] The preparation method of the suspension filter material for removing iron and manganese is as follows:

[0029] a. Weigh raw materials

[0030] Weigh 650 grams of manganese sand with a particle size of 1-3mm and a manganese content greater than 40% by weight; ②a particle size of 1-3mm and a specific gravity of less than 200kg / m 3 80 grams of expanded perlite, ③ 20 grams of plastic particles (PE particles) with a melting point of less than 125 ° C and a particle size of 1-3 mm;

[0031] b. smash

[0032] Put the three raw materials into the pulverizer independently and pulverize them fully so that the particle size is 0.5mm;

[0033] c. Mix well

[0034] Feed manganese sand, expanded perlite and crushed pla...

Embodiment 2

[0039] Example 2 A suspension filter material for removing iron and manganese, which is composed of the following components in parts by weight:

[0040] Manganese sand 680 parts;

[0041] 85 parts of expanded perlite;

[0042] 30 parts of plastic particles.

[0043] The preparation method of the suspension filter material for removing iron and manganese is as follows:

[0044] a. Weigh raw materials

[0045] Weigh 680 grams of manganese sand with a particle size of 1-3mm and a manganese content greater than 40% by weight; ②a particle size of 1-3mm and a specific gravity of less than 200kg / m 3 85 grams of expanded perlite, ③ 30 grams of plastic particles (PE particles) with a melting point of less than 125 °C and a particle size of 1-3 mm;

[0046] b. smash

[0047] Put the three raw materials into the pulverizer independently and pulverize them fully so that the particle size is 0.8mm;

[0048] c. Mix well

[0049] Feed manganese sand, expanded perlite and crushed plas...

Embodiment 3

[0054] Example 3 A suspension filter material for removing iron and manganese, which is composed of the following components by weight:

[0055] Manganese sand 700 parts;

[0056] 90 parts of expanded perlite;

[0057] 40 parts of plastic particles.

[0058] The preparation method of the suspension filter material for removing iron and manganese is as follows:

[0059] a. Weigh raw materials

[0060] Weigh 700 grams of manganese sand with a particle size of 3mm and a manganese content greater than 40% by weight, and ②a particle size of 3mm and a specific gravity of less than 200kg / m 3 90 grams of expanded perlite, ③ 40 grams of plastic particles (PE particles) with a melting point of less than 120 ° C and a particle size of 3 mm;

[0061] b. smash

[0062] Put the three raw materials into the pulverizer independently and pulverize them fully so that the particle size is 1mm;

[0063] c. Mix well

[0064] Feed manganese sand, expanded perlite and crushed plastic particle...

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Abstract

The invention discloses an iron-removing and manganese-removing suspended filter material. The iron-removing and manganese-removing suspended filter material is characterized by comprising the following components in parts by weight: 650-700 parts of manganese sand, 80-90 parts of expanded perlite and 20-40 parts of plastic particles; the suspended filter material is prepared by weighing, crushing, uniformly mixing, melting, extruding, granulating and cooling. The iron-removing and manganese-removing suspended filter material has the advantages as follows: (1) the suspended filter material is low in specific weight, is suspended in water, and is conducive to direct exchange contact of water and the manganese sand for sufficient reaction; (2) the expanded perlite is very large in grain space, so that formation of a biofilm is facilitated, and oxidation reaction of iron ions and manganese ions is improved; (3) the iron-removing and manganese-removing suspended filter material improves the backwashing capability and saves water resources; (4) a supporting material is not needed, so that pressure on equipment is reduced and the equipment cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of iron and manganese removal filter materials for water treatment systems, in particular to a suspension filter material for iron and manganese removal and a preparation method thereof, which are widely used in drinking water treatment. Background technique [0002] At present, the domestic and foreign water treatment industry has developed very mature. Iron and manganese removal filter media are commonly used materials in water treatment systems and are widely used in drinking water treatment. In the iron and manganese removal filter materials are all mineral materials mainly natural manganese sand, the specific gravity is greater than silicon (2.4g / cm 3 ), mainly using the manganese dioxide in the manganese sand as the function of the oxidation catalyst to oxidize and precipitate the iron and manganese in the water to achieve the purpose of reducing the iron and manganese content in the water. However, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C02F3/00
CPCY02W10/10
Inventor 刘朝南袁晓雄
Owner 海南甘泉实业有限公司
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