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Drinking water treatment method 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: 2013-03-20
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 and the water supply pipe network has strong corrosion. It is a drinking water treatment method for stabilizing water quality and shortening treatment time by improving pH value, improving water quality and chemical stability, and removing heavy metals such as lead, copper, and manganese in water.

Method used

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  • Drinking water treatment method for stabilizing water quality
  • Drinking water treatment method for stabilizing water quality
  • Drinking water treatment method for stabilizing water quality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1. A drinking water treatment method for stabilizing water quality, comprising the following steps:

[0026] (1) First, carry out several carbon dioxide aeration on the drinking water. Carbon dioxide aeration is to release high-pressure carbon dioxide gas into the drinking water through the aeration head. After several carbon dioxide aeration, the carbon dioxide content in the drinking water is 40mg. / L.

[0027] (2) The aerated drinking water flows through the contact bed composed of limestone particles for contact treatment, and the contact time is 40min; the limestone particles are made of heavy calcium carbonate, and the particle size is 0.71-1.25mm. No more than 10% of ground calcium carbonate particles exceed this particle size range.

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

Embodiment 2

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

[0035] (1) First, carry out several carbon dioxide aeration on the drinking water. Carbon dioxide aeration is to release high-pressure carbon dioxide gas into the drinking water through the aeration head. After several carbon dioxide aeration, the carbon dioxide content in the drinking water is 70mg. / L.

[0036] (2) The aerated drinking water flows through the contact bed composed of limestone particles for contact treatment, and the contact time is 20min; the limestone particles are made of heavy calcium carbonate, and the particle size is 0.71-1.25mm. No more than 10% of ground calcium carbonate particles exceed this particle size range.

[0037] (3) Finally, the drinking water treated with limestone is subjected to carbon dioxide degassing treatment by means of blast degassing to remove excess carbon dioxide in the water. Specifically, the drinking wate...

Embodiment 3

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

[0039] (1) First, carry out multiple carbon dioxide aeration on the drinking water. 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 50mg. / L.

[0040] (2) The aerated drinking water is then subjected to contact treatment through a contact bed composed of limestone particles, and the contact time is 60 minutes; the limestone particles are made of heavy calcium carbonate, and the particle size is 0.71-1.25mm. No more than 10% of ground calcium carbonate particles exceed this particle size range.

[0041] The limestone-treated drinking water then flows through a filter device to filter out tiny limestone particles.

[0042] (3) Finally, the drinking water treated with limestone is subjected to car...

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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 present invention relates to the technical field of water treatment, and 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, low alkalinity and strong corrosiveness to the water supply network. The erosion and corrosion of the pipe network will reduce the effective cross-sectional area of ​​the pipeline and reduce the transmission capacity of the pipeline. At the same time, when the water flow speed or water flow direction in the water supply pipe network suddenly changes, 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. The concentration of other metal elements increases. The common phenomenon of "yellow water" in urban water supply systems is c...

Claims

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Application Information

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