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Treatment agent for life drinking water, preparation and application thereof

A technology of domestic drinking water and treatment agent, applied in the direction of non-polluted water treatment, water softening, etc., can solve the problems of inconvenient water treatment, poor scale inhibition effect, slow dissolution, etc., achieve excellent scale inhibition, simplify equipment and Production process, the effect of simplifying the production process

Inactive Publication Date: 2010-07-21
北京洁利尼水处理工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solid water treatment agent obtained in this way is in the form of glass, has slow solubility in water, and can inhibit the effect on metal corrosion, but its scale inhibition effect is not good, so it has not been popularized in industry.
In order to improve, Zheng Pingfang et al. (CN89100899) disclosed a technology for producing polyphosphate in August, 1989, which is characterized in that the main raw material is changed, and sodium phosphate is changed into phosphoric acid, so that the basic oxide If the dosage is increased, such as calcium oxide, sodium carbonate, zinc oxide, etc., a reaction process for generating phosphate should be installed in the system to discharge waste liquid, which may constitute an environmental problem
In addition, this production technology uses amorphous crystal blocks as the product shape, which is very inconvenient for water treatment
Probably because of these reasons, the production technology of polyphosphate has not been promoted and applied in industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take the raw materials by the following weight: sodium hexametaphosphate 19.5kg, calcium hydrogen phosphate 7.18kg;

[0039] In the V-shaped mixer (the V-shaped mixer can be purchased from commercial sources, what the present invention used is the pharmaceutical production equipment, VHT type, is produced by Tianjin Traditional Chinese Medicine Machinery Factory), the above-mentioned raw materials were mixed for 30 minutes, and then transferred to Reaction furnace lined with high-temperature-resistant quartz (the reaction furnace lined with high-temperature-resistant quartz is unshaped equipment, and the core component of the reactor is an ark made of sintered quartz, with a size of 960x460x260 mm and an inner cavity of 950x450x250 mm, with a volume of about 100 liters. The reactor is surrounded by high-silicon bricks for insulation, and silicon carbide rods are used as heating elements in the middle. The size of the entire reaction furnace is 1450x1100x800 mm) for melti...

Embodiment 2

[0050] Weigh the raw materials according to the following weight: sodium tripolyphosphate 60kg, calcium hydrogen phosphate 40kg; divide the above raw materials into a VHT V-shaped mixer (Tianjin Traditional Chinese Medicine Machinery Factory) and mix them for 30 minutes in 2 times. The reaction furnace of lining (the structure of reaction furnace and its material are with embodiment 1), control melting temperature 900-950 ℃, reaction temperature 1100-1200 ℃, total heating time 1-2 hour. After the reaction, pour into the mold (the mold is the same as in Example 1), and when the mold is cooled to 500° C., the mold can be demoulded, and the finished product can be obtained after annealing.

[0051] The properties of the product obtained are as follows:

[0052] Appearance: colorless transparent or microstrip blue balls, 18-20 mm in diameter;

[0053] Solubility: 3.5-5.5 mg / g / day;

[0054] Chemical composition: P 2 o 5 66.7% (wt)

[0055] CaO 13.6% ...

Embodiment 3

[0061] Take the raw materials by the following weight: sodium hexametaphosphate 72.2kg, calcium hydrogen phosphate 27.8kg; the above-mentioned raw materials were mixed for 30 minutes in the V-shaped mixer (same as Example 1) twice, and transferred to the The reaction furnace of lining (furnace structure and its material are the same as embodiment 1) controls melting temperature 900-950 ℃, reaction temperature 1100-1200 ℃, and total heating time 1-2 hour. After the reaction, pour into the mold (the mold is the same as in Example 1), and when the mold is cooled to 500° C., the mold can be demoulded, and the finished product can be obtained after annealing.

[0062] The properties of the product obtained are as follows:

[0063] Appearance: colorless transparent or microstrip blue balls, 18-20 mm in diameter;

[0064] Solubility: 1.5-2.8 mg / g / day;

[0065] Chemical composition: P 2 o 5 62.8% (wt)

[0066] CaO 13-14% (wt)

[0067] SiO 2...

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Abstract

The invention discloses a domestic drinking water treating agent and a method for the production thereof. The water treating agent of the invention is made by the following materials by weight: 60 to 80 parts of sodium tripolyphosphate or sodium hexametaphosphate and 20 to 40 parts of bicalcium phosphate. The experiment proves that the water treating agent of the invention has excellent scale inhibition and anti-corrosive properties, and can be widely applied to the scale inhibition and anti-corrosive treatment of domestic drinking water.

Description

technical field [0001] The invention relates to a water treatment agent, in particular to a drinking water treatment agent and a preparation method thereof, belonging to the field of water treatment engineering. Background technique [0002] In the middle of the twentieth century, people discovered that polyphosphate has the characteristics of chelating calcium and magnesium salts in water, so that calcium carbonate and magnesium carbonate in water can be suspended in water with the help of polyphosphate ions without precipitation, thus avoiding scale. This is the mechanism by which polyphosphates have antiscalant properties. On the other hand, polyphosphate is hydrolyzed to produce orthophosphate, which can form calcium iron phosphate [Ca 2 Fe(PO 4 ) 2 〕, it can be attached to the surface of metal pipes to prevent the corrosion of dissolved oxygen in water. Therefore, polyphosphate can not only inhibit scale, but also play a role in anticorrosion. It is a multifunctiona...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/06C02F5/04C23F11/08C02F103/02
Inventor 吴金城袁刚
Owner 北京洁利尼水处理工程有限公司