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Aeration device and underground water treatment process

An aeration device and groundwater technology, which is applied in the field of groundwater treatment and groundwater treatment technology, can solve the problems of anions with total hardness exceeding the standard, affect the taste of drinking water, and have a lot of scale in boiled water, etc., and achieve excellent aeration effect and excellent water output effect , the effect of reducing the workload

Inactive Publication Date: 2017-09-01
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acid-base balance aeration method refers to adding a strong acid-based scale inhibitor to the water to convert the bicarbonate that produces scale in the water into carbon dioxide, and to restore the pH by blowing off carbon dioxide through aeration, which can effectively remove scale without reducing the total Hardness, and will introduce a large amount of anions into the water, which may affect the taste of drinking water
[0004] For groundwater with high total hardness even exceeding 450mg / L and alkalinity exceeding 200mg / L, the total hardness exceeds the standard, and there is a lot of scale in the boiled water. Although the air method can remove scale well, it is difficult to solve the problems of excessive total hardness and the introduction of a large amount of anions

Method used

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  • Aeration device and underground water treatment process
  • Aeration device and underground water treatment process
  • Aeration device and underground water treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The depth of the aeration device in this embodiment is 3.5-4.5m, which can be adjusted according to the amount of water to be aerated during specific use.

[0035] This embodiment provides an aeration device, in which a first vertical partition 1 and a second vertical partition 2 are arranged, the first vertical partition 1 and the second vertical partition 2 are vertically connected to each other, and the second One vertical partition 1 is not in contact with the bottom of the device for passing water, and the second vertical partition 2 is in contact with the bottom of the device to separate the aeration area. If the second vertical partition 2 is in the first vertical partition 1 On the central axis, it plays the role of evenly distributing the water; the second vertical partition 2 is surrounded by the second vertical partition 2 with a ventilation main pipe 3, and the second vertical partition 2 and the device form The space is provided with a ventilation branch pi...

Embodiment 2

[0041] This embodiment provides a groundwater treatment process. After the groundwater to be treated enters the hydrogen ion exchanger 10, it is mixed with the original groundwater to be treated at a volume ratio of 1:5 through the mixer 11, and then enters the aeration device for aeration.

[0042] The hydraulic retention time of the water to be treated through the water inlet 6 of the aeration device is 3 minutes, and the hydraulic retention time in the space formed by the second vertical partition 2 and the device is 45 minutes. The air-water ratio of the aeration device is B / 10, where B represents the temporary hardness of the groundwater to be treated.

[0043] Present embodiment technological process is:

[0044] After being treated by the ion exchanger, the water to be treated is mixed with the raw water by a static mixer at a volume ratio of 1:5, and after being fully mixed, it enters the water inlet area of ​​the aeration device, and then enters the aeration device fr...

Embodiment 3

[0048] This example takes groundwater somewhere in Xi'an City, Shaanxi Province as an example. The air-to-water ratio of the aeration device is 1:5. The effect of Example 2 is verified, and the total hardness of the reactor effluent is monitored in the laboratory.

[0049] Adopt the method described in the present invention, i.e. "replacement+mixing+aeration", each index is as follows:

[0050]

[0051] After several test runs, it can be seen that when the mixing ratio of treated water and raw water is 1:5, the pH of the effluent is stable and then maintained at about 6.55, the hardness of the aeration is basically unchanged before and after aeration, and the total hardness of the effluent is maintained at about 3 / 4 of the raw water , The effluent water is clear after boiling, without precipitation and floating matter, and solves the problems of pH and water hardness at the same time, which meets the relevant standards.

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Abstract

The invention provides an aeration device. A first vertical separation plate and a second vertical separation plate are arranged in the aeration device, and are vertically connected with each other; the first vertical separation plate is not in contact with the bottom of the device; the second vertical separation plate is in contact with the bottom of the device; a ventilation main pipe is lapped on the second vertical separation plate around the second vertical separation plate; a ventilation branch pipe is arranged in a space formed by the second vertical separation plate and the device; the ventilation main pipe communicates with the ventilation branch pipe; a plurality of vertical aeration pipes communicate with the ventilation branch pipe. The invention also provides an underground water processing process. The underground water part to be treated enters a hydrogen ion exchanger and is then mixed with the original underground water to be treated according to the proportion; after the mixing, the water enters the aeration device. The aeration device can realize the bottom water inlet and the upper part water outlet; the aeration is sufficient; the outlet water total hardness is about 3 / 4 of the total hardness; the water scale can be reduced under the condition of maintaining the hardness required by the human body; the pH value is 6 to 7.

Description

technical field [0001] The invention belongs to the technical field of water treatment and relates to groundwater treatment, in particular to an aeration device and a groundwater treatment process for removing scale and reducing total hardness. Background technique [0002] Groundwater is an important and high-quality drinking water source for Chinese residents. However, groundwater generally has high hardness and temporary hardness (scale). [0003] At present, the technologies for treating high hardness water and removing scale mainly include lime softening method, membrane softening method, ion exchange method and acid-base balance aeration method. The lime softening method can fundamentally reduce the total hardness, but it will produce a large amount of sludge, and the treatment process is complicated. During the operation of the membrane softening method, the power consumption is large, the water production cost is high, and in order to reduce the pollution of the mem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/20C02F1/66C02F9/04
CPCC02F1/20C02F1/42C02F1/66C02F2303/22
Inventor 卢金锁薛福举周传黄廷林
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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