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Water treatment method and apparatus

A kind of equipment and pretreatment technology, applied in water/sewage treatment equipment, water/sewage treatment, flotation water/sewage treatment, etc., can solve the problems of cumbersome installation methods and a large amount of space

Inactive Publication Date: 2015-10-07
NW TEKNIIKKA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One disadvantage with existing water purification arrangements is that they require a large amount of space and their installation methods can be cumbersome

Method used

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  • Water treatment method and apparatus

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Embodiment Construction

[0010] The present invention relates to a method and apparatus for purifying water containing impurities by utilizing flotation and filtration,

[0011] The method and equipment of the invention are applicable to the purification of various industrial waste waters, as well as municipal drinking water and waste water. The method can also be applied to surface water, ground water, and natural mineral water and spring water.

[0012] The method and apparatus of the present invention have been shown to be effective in removing, for example, manganese, iron, arsenic which are generally considered problematic in the field of water purification.

[0013] method

[0014] The method of the present invention uses a substantially cylindrical vessel (1) comprising,

[0015] At least three coaxially arranged vertical flow channels (2, 3, 4), comprising a tubular inner channel (2), an annular intermediate channel (3) and an annular outer channel (4), the outer channel (4 ) contains filte...

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PUM

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Abstract

The invention relates to a water purification method and apparatus utilizing flotation filtration. Especially, the invention relates to a water purification method based on dissolved air flotation combined with filtration. The invention also relates to an apparatus for implementing the method. The method and apparatus of the invention may be applied to the purification of various industrial waste waters as well as municipal drink waters and waste waters. The method can also be applied to surface waters, groundwaters as well as natural mineral waters and spring waters.

Description

technical field [0001] The present invention relates to a method of water purification involving flotation. In particular, the present invention relates to a water purification method based on dissolved air flotation combined with filtration. The invention also relates to a device for carrying out the method. Background technique [0002] Flotation is widely used in the purification of industrial and municipal wastewater to remove impurities such as fats, oils, grease and suspended solids. Prior to flotation, the wastewater to be purified is generally treated with flocculation chemicals of inorganic compounds or organic short-chain polymers. Flotation can be performed as so-called dissolved air flotation. The process utilizes so-called dispersion water, which is produced by dissolving air in water under pressure. Air is then released from the dispersed water in the flotation tank or pond containing the wastewater at atmospheric pressure. The released air forms small air...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/00C02F1/24C02F1/52B01D21/00B03D1/14B03D1/24B01D24/00
CPCB03D1/1475B03D1/1431B03D1/247C02F1/004C02F1/24C02F1/56C02F1/66C02F2103/06C02F2201/003C02F2301/024C02F2303/16B01D21/0084B03D1/14C02F1/52B01D24/10C02F9/20
Inventor 海基·拉蒂宁
Owner NW TEKNIIKKA
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