Process for adjusting pH value and alkalinity of primary ion exchange compound bed by adding salt

A technology of ion exchange and PH value, which is applied in water/sewage multi-stage treatment, water treatment parameter control, water/sludge/sewage treatment, etc. It can solve problems such as disability, skin and mucous membrane injury, major safety hazards and environmental protection. , to achieve the effect of small civil construction investment, low investment cost, and small floor space

Pending Publication Date: 2021-07-09
GUANGDONG HUIZHONG WATER TREATMENT EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Using the above two dosing methods can effectively alleviate the phenomenon of too low pH, but there are large safety hazards and environmental protection problems.
First of all, ammonia gas will cause damage to the breathing and skin mucous membranes of operating and management personnel, and high-concentration ammonia gas has a safety hazard of explosion in a closed environment; caustic soda is a highly corrosive liquid, and improper operation and management will burn the skin, seriously It will cause disability. In addition, the liquid is a strong alkali substance with a very high pH, ​​which is limited by the ranking of environmental protection. In view of the particularity of the above-mentioned equipment, equipment protection measures must be strict, and the cost of equipment and liquid medicine is also high. There is a need for alternatives in the market. A permanent process to meet the requirements of boiler feed water and other desalinated water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The primary ion exchange retriea of ​​this embodiment is added to the salt adjustment pH and the alkalinity process mainly include the steps of:

[0021] Step 1: Exchange the raw water through the cation exchange to obtain a weakly acidic raw water;

[0022] Step 2: Remove the contrast of the weakly acidic raw water to the water tank;

[0023] Step 3: Insert the salt fluid in the salt liquid reservoir in the water tank by the salt fluid vapor pump;

[0024] Step 4: Transfer the weakly acidic raw water in the water tank to the anion exchanger by lifting the pumping, and passes through the online pH monitoring meter to obtain the sufficient water.

[0025] Step When the medium water enters the cationic exchanger, it is necessary to remove impurities and dirt by the filter device.

[0026] The way to remove carbon dioxide in step II is blown out.

[0027] The blowout method is specifically to form a weak acid water spray surface by a spray device, and the air is blown from the...

Embodiment 2

[0033] The primary ion exchange retriea of ​​this embodiment is added to the salt adjustment pH and the alkalinity process mainly include the steps of:

[0034] Step 1: Exchange the raw water through the cation exchange to obtain a weakly acidic raw water;

[0035] Step 2: Remove the contrast of the weakly acidic raw water to the water tank;

[0036] Step 3: Remove the acidic raw water of carbon dioxide in the water tank through anion exchanger to obtain a desalination;

[0037] Step 4: Adding an alkaline substance to the alkaline water to adjust the pH to the segmentation range to obtain water.

[0038] Step When the medium water enters the cationic exchanger, it is necessary to remove impurities and dirt by the filter device.

[0039] The method of removing carbon dioxide in step two is blown out, and the blowout method is specifically to form a weakly acidic water spray surface by a sprinkler device, and the air blowing surface is blown from the spray surface by the blower.

[...

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Abstract

The invention relates to the technical field of primary ion exchange compound bed water treatment, in particular to a process for adjusting the pH value and alkalinity of a primary ion exchange compound bed by adding salt. The process mainly comprises the following steps of: exchanging raw water through a cation exchanger to obtain weakly acidic raw water; removing carbon dioxide from the weakly acidic raw water, and then transferring the weakly acidic raw water into a water tank; feeding salt liquid in a salt liquid storage tank into the water tank through a salt liquid feeding pump; and transferring weakly acidic raw water in the water tank into an anion exchanger for exchange through a lifting pump, and obtaining later-stage water after the weakly acidic raw water is detected to be qualified through an online PH monitoring instrument. According to the method, the cost of an existing process for adjusting the PH value and the alkalinity of a first-stage ion exchange compound bed is effectively reduced, the safety of raw materials is higher when the PH value and the alkalinity are adjusted, and the problems of waste water and waste gas are solved.

Description

Technical field [0001] The present invention relates to the field of primary ion exchange researry water treatment, in particular, involving primary ion exchange researry to adjust the pH and an alkalinity process. Background technique [0002] At present, the chemical dehydration of the present-existing ion exchange is generally used as the boiler supply water, and the pH adjustment of the an ammonia device or the boar alkali-dosing device ensures that the water alkalin is in line with the national standard requirements of the boiler supply water, usually pH control at 8.2 Between ~ 9.5, the pH range can effectively avoid the phenomenon of boiler furnace aqueous alkaline, which is a rigid indicator that must satisfy the boiler supply water. [0003] The above two pharmaceutical methods can effectively alleviate the phenomenon of pH, but there is a large safety hazard and environmental issues. First, ammonia gas will damage the breathing and skin mucosa of the operation managemen...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C02F9/04
CPCC02F9/00C02F2001/425C02F2001/422C02F1/20C02F1/66C02F2209/06
Inventor朱湛
OwnerGUANGDONG HUIZHONG WATER TREATMENT EQUIP CO LTD