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Method for adding carbonic acid by adopting carbonic acid solution adding system

A technology of carbonic acid and solution, which is applied in the field of water treatment, can solve the problems of low reaction efficiency, long reaction time, and low utilization rate of carbon dioxide gas, and achieve the effect of accelerating the reaction speed and shortening the reaction time

Pending Publication Date: 2021-12-24
哈维(上海)环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These gas dosing systems all have the defects of easy escape of small CO2 bubbles, low reaction efficiency, low utilization rate of carbon dioxide gas, and long reaction time

Method used

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  • Method for adding carbonic acid by adopting carbonic acid solution adding system
  • Method for adding carbonic acid by adopting carbonic acid solution adding system
  • Method for adding carbonic acid by adopting carbonic acid solution adding system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] In this embodiment, a method for adding carbonic acid by using a carbonic acid solution dosing system for adjusting the pH value of water comprises the following steps:

[0067] (1) set up a kind of carbonic acid solution dosing system; figure 1 As shown, the carbonic acid solution dosing system includes a liquid carbon dioxide storage tank 1, an electronic vaporizer 2, a gas heater 3, a mixer 5 and a diffuser 6 connected in sequence, and also includes a water pump 4 connected to the mixer 5 inlet; An annular coil 14 and a long-distance pipeline 17 (straight pipe) are arranged between the mixer 5 and the diffuser 6; it is vaporized by the electronic vaporizer 2 and heated by the gas heater 3 to a temperature above 30°C and a pressure above 3bar The carbon dioxide gas and the pressurized reaction water pressurized by the water pump 4 to a pressure above 3 bar form a gas-water mixture in the mixer 5; the gas-water mixture initially forms a saturated carbonic acid solution...

Embodiment 2

[0089] like figure 2 As shown, the method for adding carbonic acid by using a small-scale carbonic acid solution dosing system in this embodiment is basically the same as the method for adding carbonic acid by using a small-scale carbonic acid solution dosing system in Example 1; the difference is that the diffuser 6 is set In the pool to be treated without water flow, multiple channels for releasing the carbonic acid solution are opened on the double side walls of the diffuser 6; the channels for releasing the carbonic acid solution are a combination of small holes and narrow gaps.

[0090] like figure 2 Shown, diffuser 6 is arranged in the pool that does not have water flow to be treated, has many circles of small holes and narrow slits (a row of small holes 9, a row of narrow slits 8) on the whole cylindrical side wall of diffuser 6 staggered arrangement) to achieve 360° delivery.

[0091] The channel (small hole 9 and narrow gap 8) for releasing the carbonic acid solut...

Embodiment 3

[0095] The method for adding carbonic acid by using the carbonic acid solution dosing system in this embodiment is basically the same as the method for adding carbonic acid by using the carbonic acid solution dosing system in Example 1; the difference is that between the mixer 5 and the diffuser 6 Liquid storage tank 15 and long-distance pipeline 17 (straight pipe) are arranged between. The long-distance pipeline 17 is a large-diameter pipeline greater than DN25, and the channel for releasing the carbonic acid solution is a narrow slit 8 with a row of narrow slits 8 in the middle and a row of narrow slits 8 on both sides.

[0096] The pressure gas-water mixture enters the liquid storage tank 15, and the pressure generated by the gas-water mixture continuously acts on the tank wall and the reaction force of the tank wall dissolves the carbon dioxide bubbles in the water, finally forming a supersaturated carbonic acid solution. The supersaturated carbonic acid solution is sent t...

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Abstract

The invention discloses a method for adding carbonic acid by adopting a carbonic acid solution adding system. The method comprises the following steps of 1) establishing a carbonic acid solution adding system which comprises a mixer and a diffuser, arranging an annular coil pipe or a liquid storage tank and a long-distance pipeline between the mixer and the diffuser, arranging the diffuser in water to be treated, enabling the side wall of the diffuser to be provided with a channel for releasing a carbonic acid solution, namely a small hole or a narrow gap or a combination of the small hole and the narrow gap, and enabling the channel to generate a certain back pressure and enabling the supersaturated carbonic acid solution to be sprayed into water to be treated at a certain pressure, 2) heating and regulating the pressure of the carbon dioxide gas to a certain temperature and a certain pressure, and feeding the carbon dioxide gas into the mixer, 3) pressurizing reaction water to a certain pressure through a water pump, and feeding into the mixer, and 4) arranging a water quality on-line detector in the raw water, and controlling the flow of the carbon dioxide gas through the connection of a signal receiver and a PLC. According to the method, the water quality can be accurately adjusted, meanwhile, bubbles can be greatly reduced, and the utilization rate of carbon dioxide gas is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a method for adding carbonic acid by using a carbonic acid solution dosing system for applications such as adjusting the pH value of water, remineralization or lime softening. Background technique [0002] In surface water, reservoir water, wastewater, and manufacturing process water, there may be too high pH, ​​exceeding pH 8.0 or even above 9. Excessively high and unstable pH of water will seriously affect subsequent chemical treatment and product quality . For example, the pH of the effluent at the wastewater terminal should be controlled at 6-9; during the coagulation and disinfection process of the tap water plant, due to the excessively high and unstable pH, excessive chemical agents are added and excessive chemical by-products are produced. As a result, the relevant national standards cannot be reached; in the textile printing and dyeing industry, the pH of the prin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/66
CPCC02F1/66
Inventor 林峡
Owner 哈维(上海)环境科技有限公司
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