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A flocculant for purifying landscape water and its preparation method

A flocculant and landscape technology, applied in the field of new flocculants, can solve the problems of difficult large-scale production, poor water quality adaptability, large quantities, etc., and achieve the effect of high efficiency of turbidity and algae removal, not harsh water conditions, and simple process flow

Inactive Publication Date: 2016-01-06
江苏立能环保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

[0004] At the present stage, flocculants are widely used in the primary treatment of drinking water sources, but are rarely used in landscape water, and currently mainly use aluminum salts and iron salts inorganic polymer flocculants, but each of them has certain limitations. The disadvantages of aluminum salt flocculants, especially active aluminum, are highly toxic. At the same time, the preparation method of polyaluminum is not perfect, resulting in more fine particles of hydrolyzed aluminum in the solution. If they flow into the human body through various channels and interfere with the human body The physiological function of iron salt flocculants has poor adaptability to low temperature and low turbidity water quality, low turbidity removal rate, residual chroma and rapid hydrolysis
Provide a kind of polyaluminium chloride and its preparation method and its method for treating sewage as No. CNIO141256O patent application, disclose a kind of method that takes bauxite and aluminum chloride as a kind of coagulant of raw material, its The disadvantage is: the flocculant has a large amount of aluminum ions, and the water entering the human body will cause harm to the human body
The CN1935684A patent application provides a preparation method of polyaluminum ferric chloride flocculant. Although the flocculant has the advantages of aluminum salt and iron salt, the source of raw materials is wide and cheap, but its process requires high temperature reflux and suction filtration, which is cumbersome and complicated. Not easy to mass produce

Method used

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  • A flocculant for purifying landscape water and its preparation method
  • A flocculant for purifying landscape water and its preparation method
  • A flocculant for purifying landscape water and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The mass percent of each raw material in the PSFZn in this example is: industrial water glass 30%, ferric chloride 1%, zinc sulfate 2%, dilute hydrochloric acid is 10%, sodium bicarbonate 10%, surplus is deionized water.

[0030] Concrete preparation method is as follows:

[0031] (1) After diluting the water glass with deionized water, slowly add it to part (half) of dilute hydrochloric acid under magnetic stirring at a speed of 500r / min, and adjust the pH value to 4 with the remaining (half) hydrochloric acid, at 20 The polysilicic acid solution was obtained after activation at ℃ for 30 minutes.

[0032] (2) Put FeCl at a speed of 300r / min 3 , ZnSO 4 Added to the polysilicic acid solution mentioned above one after another, after stirring for 25min. Sodium bicarbonate was added, and stirring was continued for 10 min to obtain PSFZn.

Embodiment 2

[0038] In the PSFZn in this example, each raw material is by mass percentage: industrial water glass 25%, ferric chloride 4%, zinc sulfate 4%, dilute hydrochloric acid is 20%, sodium bicarbonate 10%, surplus is deionized water.

[0039] Concrete preparation method is as follows:

[0040] (1) After diluting the water glass with deionized water, slowly add it to some dilute hydrochloric acid under magnetic stirring at a speed of 400r / min, adjust the pH value to 5 with the remaining hydrochloric acid, and activate at 40°C for 20 minutes After that, polysilicic acid solution is obtained.

[0041] (2) Put FeCl at a speed of 300r / min 3 , ZnSO 4 Added to the polysilicic acid solution mentioned above one after another, after stirring for 45min. Sodium bicarbonate was added, and stirring was continued for 15 min to obtain PSFZn.

Embodiment 3

[0047] The raw materials in PSFZn in this example are by mass percentage: industrial water glass 21%, ferric chloride 8%, zinc sulfate 4%, dilute hydrochloric acid is 20%, sodium bicarbonate 5%, surplus is deionized water.

[0048] Concrete preparation method is as follows:

[0049] (1) After diluting the water glass with deionized water, slowly add it to part (such as 2 / 3) of dilute hydrochloric acid under magnetic stirring at a speed of 600r / min, and then use the remaining (such as 1 / 3) The pH value was adjusted to 6 with hydrochloric acid, and the polysilicic acid solution was obtained after activation at 28° C. for 30 minutes.

[0050] (2) Put FeCl at a speed of 400r / min 3 , ZnSO 4 Add it to the polysilicic acid solution mentioned above, and stir for 60 minutes. Sodium bicarbonate was added, and stirring was continued for 20 min to obtain PSFZn.

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Abstract

The invention provides a flocculant for purifying landscape water and a preparation method of the flocculant. The flocculant is used for improving the quality of landscape water in cities, parks, residential districts and the like, and the flocculant disclosed by the invention is a flocculant PSFZn which is low in preparation raw material, simple in process, safe and efficient. The flocculant is prepared from the following raw materials in percentage by weight: 15-30% of sodium silicate, 1-8% of ferric chloride, 2-4% of zinc sulfate, 10-20% of a dilute hydrochloric acid, 1-10% of sodium bicarbonate and the balance of deionized water, wherein the mass concentration of the dilute hydrochloric acid is 10%, and the silica content of sodium silicate is 21-25%.

Description

Technical field: [0001] The invention relates to a new type of flocculant, which is suitable for landscape water with low temperature and low turbidity, and can also be used for primary treatment of drinking water sources, belonging to the technical field of water treatment. Background technique: [0002] With the development of the economy and the continuous improvement of people's living standards, people's requirements for the surrounding water environment are also getting higher and higher. Landscape pools have become an indispensable part of urban green space, park construction, living quarters and other places. However, due to the poor circulation of landscape water and inadequate management measures, water bodies are easily polluted and affect transparency during use. In severe cases, peculiar smells will appear, which not only does not play a role in beautifying the environment, but also affects people's quality of life. In some places where the water quality change...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52
Inventor 郭照冰陈姝马蓉葛鑫魏英祝胜男
Owner 江苏立能环保水处理工程有限公司
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