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Porous calcium silicate filter material for water treatment

A porous calcium silicate and water treatment technology, which is applied in the fields of application, filtration and separation, household appliances, etc., can solve the problems of high cost and affecting the promotion and use of equipment

Inactive Publication Date: 2007-08-15
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the formula of the porous calcium silicate filter material used in the imported equipment is not disclosed to the public at present, after the equipment is introduced, it is still necessary to order regularly from foreign manufacturers, which not only costs a lot, but also greatly affects the popularization and use of the equipment

Method used

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  • Porous calcium silicate filter material for water treatment
  • Porous calcium silicate filter material for water treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Filter material formula is as follows (by weight):

[0019] Powdered Quartz (SiO 2 )--50

[0020] Ordinary Portland cement (label 425 or 425R)--10~26

[0021] Powdered calcium oxide (CaO)--5~26

[0022] Powdered gypsum (CaSO 4 )--5

[0023] Aluminum (Al) powder--0.15~0.22

[0024] water - appropriate amount

[0025] Powdered Quartz (SiO 2 ) can use domestic powdered thymite or weathered quartz, diatomaceous earth, etc.; calcium oxide (CaO) can also be Ca(OH) obtained by first dissolving quicklime with water 2 substitute.

[0026] a. Coagulation

[0027] powdered quartz (SiO 2 ), ordinary Portland cement (label 425 or 425R), gypsum (CaSO 4 ), calcium oxide (CaO) and aluminum (Al) powder mixing;

[0028] Add water and stir quickly and then pour it into the mold.

[0029] b. Steam foam curing

[0030] Move the mold and semi-finished products to a 60°C steamer for foaming, curing, and curing for about 8 hours.

[0031] c. High temperature and high pressure st...

Embodiment 2

[0043] Tests have shown that adding an appropriate amount of seed crystals to the formula can quickly crystallize Tobermorite and inhibit the formation of Xonotlite. The finished product has better filtration performance, and at the same time, it can be used for waste and save costs. Therefore, 1-5% by weight of seed crystals can be added into the formula.

[0044] After crushing the finished sawing scraps obtained in Example 1, use them as seed crystals. After adding 1 to 5% by weight of seed crystals in the formula, the tobermorite (Tobermorite) in the finished product increases by 3 to 6 %.

[0045] The method of adding crystal seeds to increase the proportion of tobermorite in the finished product is only effective for the formula with pyrymite as raw material, and the effect is not obvious or basically ineffective for the formula with weathered quartz or diatomite as raw material, but it can still reach The purpose of waste utilization and cost saving.

[0046] Compared...

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Abstract

A porous calcium silicate filter material used in water treatment is made from coagulation, steam foaming and high-temperature high-pressure steam treatment, characterized in that it uses domestic powder quartz (SiO2), general silicate cement, powder calcium oxide (CaO), power calcium sulfate (CaSO4), and aluminum powder (Al). The inventive product has strong adsorption and decomposition on organic, phosphor, and nitrogen, to be used in small life sewage treatment system.

Description

1. Technical field [0001] The invention belongs to the filter material manufacturing technology in the technical field of waste water and sewage treatment. 2. Background technology [0002] With the improvement of industrial and agricultural production and people's living standards, the discharge of industrial sewage and domestic sewage in my country is increasing, and the total discharge of domestic sewage has exceeded the discharge of industrial sewage. According to the statistics of 2005, the domestic The total discharge of sewage is 28.14 billion tons, and the total discharge of industrial sewage is 24.31 billion tons. [0003] The pollution sources in domestic sewage are mainly organic matter, phosphorus, nitrogen, etc., which have become the leading factors of eutrophication in rivers and lakes. With the development of the economy, the amount of sewage will increase. If it is not treated, it will be difficult to achieve the goal of environmental governance to build a b...

Claims

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Application Information

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IPC IPC(8): B01D39/20B01J20/10C04B38/00
Inventor 黄标史学正陆长青孙维侠赵永存殷晓红
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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