Drinking water treatment methods for stabilizing water quality

A drinking water treatment and drinking water technology, applied in the field of water treatment, can solve the problems of low alkalinity and hardness

Inactive Publication Date: 2011-12-14
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method that can effectively improve the alkalinity and hardness of drinking water and stabilize drinking water in view of the defects in the prior art that the alkalinity and hardness of factory water are too low a

Method used

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  • Drinking water treatment methods for stabilizing water quality
  • Drinking water treatment methods for stabilizing water quality
  • Drinking water treatment methods for stabilizing water quality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, a kind of drinking water treatment method for stabilizing water quality, comprises the following steps:

[0026] (1) Carbon dioxide aeration is performed on the drinking water for many times. Carbon dioxide aeration is to release high-pressure carbon dioxide gas into the drinking water through the aeration head. After multiple carbon dioxide aeration, the carbon dioxide content in the drinking water is 40mg / L.

[0027] (2) The drinking water after aeration flows through a contact bed composed of limestone particles for contact treatment, and the contact time is 40 minutes; the limestone particles are made of heavy calcium carbonate with a particle size of 0.71-1.25mm. Ground calcium carbonate particles outside this particle size range do not exceed 10%.

[0028] (3) Finally, the drinking water treated with limestone is degassed with carbon dioxide by means of blast degassing to remove excess carbon dioxide in the water. Specifically, the drinking water ...

Embodiment 2

[0034] Embodiment 2, a kind of drinking water treatment method for stabilizing water quality, comprises the following steps:

[0035] (1) Carbon dioxide aeration is performed on the drinking water for many times. Carbon dioxide aeration is to release high-pressure carbon dioxide gas into the drinking water through the aeration head. After multiple carbon dioxide aeration, the carbon dioxide content in the drinking water is 70mg / L.

[0036] (2) The aerated drinking water is then passed through a contact bed composed of limestone particles for contact treatment. The contact time is 20 minutes; The ground calcium carbonate particles outside this particle size range shall not exceed 10%.

[0037] (3) Finally, the drinking water treated with limestone is degassed with carbon dioxide by means of blast degassing to remove excess carbon dioxide in the water. Specifically, the drinking water flows through the packing layer from top to bottom, and the water containing carbon dioxide ...

Embodiment 3

[0038] Embodiment 3, a kind of drinking water treatment method for stabilizing water quality, comprises the following steps:

[0039] (1) Carbon dioxide aeration is performed on the drinking water for many times. Carbon dioxide aeration is to release high-pressure carbon dioxide gas into the drinking water through the aeration head. After multiple carbon dioxide aerations, the carbon dioxide content in the drinking water is 50mg / L.

[0040] (2) The aerated drinking water flows through a contact bed composed of limestone particles for contact treatment, and the contact time is 60 minutes; the limestone particles are made of heavy calcium carbonate with a particle size of 0.71-1.25 mm. Ground calcium carbonate particles outside this particle size range do not exceed 10%.

[0041] Limestone-treated drinking water then flows through a filter to remove tiny limestone particles.

[0042] (3) Finally, the drinking water treated with limestone is degassed with carbon dioxide by mea...

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Abstract

The invention discloses a drinking water treatment method for stabilizing water quality. The treatment method comprises the following steps of: (1) performing carbon dioxide aeration on drinking water; (2) allowing the aerated drinking water to flow through limestone and contacting; and (3) performing carbon dioxide degassing on the drinking water to remove redundant carbon dioxide. By the treatment method, the alkalinity and hardness of the drinking water can be improved effectively, the pH value of the drinking water can be stabilized, the chemical stability of the water quality can be improved, and heavy metal such as lead, copper, manganese and the like in the water can be removed.

Description

technical field [0001] The technical field of water treatment of the present invention relates to a water treatment method, in particular to a drinking water treatment method for stabilizing water quality. Background technique [0002] The surface water in the southern region has low hardness and low alkalinity, which is highly corrosive to the water supply network. The erosion and corrosion of the pipe network will reduce the effective cross-sectional area of ​​the pipe and reduce the conveying capacity of the pipe. At the same time, when the water flow speed or direction in the water supply pipe network changes suddenly, the corrosion products on the inner wall of the pipe are likely to fall off and be released into the tap water, causing cadmium, chromium, cobalt, copper, iron, lead, manganese, nickel in the water to The concentration of other metal elements increases. The common "yellow water" phenomenon in urban water supply systems is caused by the release of iron co...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F5/08C02F1/68C02F1/28C02F1/66C02F1/20
Inventor 许仕荣王煜邦
Owner HUNAN UNIV
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