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Method for improving treatment effect of activated carbon filter tank and prolonging service life of activated carbon

A technology of activated carbon filter and treatment effect, applied in the fields of filtration treatment, chemical instruments and methods, separation methods, etc., can solve the problems of low efficiency, little removal effect of activated carbon filter, and high energy consumption, so as to reduce production costs, Solve the effect of frequent carbon change or activated carbon regeneration and improve adsorption index

Pending Publication Date: 2022-02-18
北京市自来水集团有限责任公司技术研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main purpose of this conventional backwash is to prevent the clogging of the activated carbon filter and the leakage of pathogenic microorganisms, and has little effect on improving the removal capacity of the activated carbon filter for organic matter.
Therefore, based on the fact that the traditional regeneration methods are forced to change carbon or chemical regeneration when the effluent quality of the activated carbon filter is unqualified, there are problems of low efficiency and high energy consumption, the applicant proposes an active repair method that strengthens daily maintenance

Method used

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  • Method for improving treatment effect of activated carbon filter tank and prolonging service life of activated carbon
  • Method for improving treatment effect of activated carbon filter tank and prolonging service life of activated carbon
  • Method for improving treatment effect of activated carbon filter tank and prolonging service life of activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Pack activated carbon 7 with a carbon age of 4-5 years (such as 4.5 years) in the carbon filter column 1, such as figure 1 , wherein the carbon filter column is a cylinder with a height of 2250mm; a perforated filter plate is provided at the bottom of the carbon filter column, and a 100mm support layer is filled above the filter plate, and activated carbon from the carbon filter of the waterworks is filled above the support layer. The height is 800mm, forming a carbon filter layer, simulating the activated carbon filter to treat tap water; then installing an ultrasonic vibration rod 8 on the top of the carbon filter layer (that is, from the surface of the carbon filter layer to the carbon filter layer 500mm (usually the depth of the ultrasonic vibration rod embedded in the carbon layer) 40-60% or more) is equipped with an ultrasonic vibration rod with a diameter of DN100mm in the middle); the ultrasonic power is 0-800W (adjustable), and the ultrasonic frequency is 36.4KH...

Embodiment 1A

[0124] Activated carbon with a carbon age of 5 years is loaded and filtered according to the method of Example 1.

[0125] 1. Monitor the quality of influent and effluent water before and after activated carbon filtration

[0126] Measured according to the monitoring method of Example 1, the results are shown in Table 5. Table 5 shows the monitoring data of influent and effluent water quality from the 9th to 17th day of normal operation.

[0127] Table 5 Example 1A water quality monitoring results before and after activated carbon filtration

[0128]

[0129]

[0130] 2. Calculate the CS coefficient, the first individual ratio, and the second individual ratio

[0131] 2-1) According to the measured COD of the effluent Mn Value, according to the formula (4) to calculate the first single ratio that is COD Mn Ratio, the measurement results are shown in Table 6;

[0132] 2-2) According to the chloroform concentration value of the effluent measured, calculate the second ...

Embodiment 1B

[0143] Activated carbon with a carbon age of 5 years is loaded and filtered according to the method of Example 1.

[0144] 1. Monitor the quality of influent and effluent water before and after activated carbon filtration

[0145] Measured according to the monitoring method of Example 1, the results are shown in Table 7. Table 7 shows the monitoring data of influent and effluent water quality on the 13th-22nd day of normal operation.

[0146] Table 7 Water quality monitoring results before and after activated carbon filtration of embodiment 1B

[0147]

[0148] 2. Calculate the CS coefficient, the first individual ratio, and the second individual ratio

[0149] 2-1) According to the measured COD of the effluent Mn Value, according to the formula (4) to calculate the first single ratio that is COD Mn Ratio, the measurement results are shown in Table 8;

[0150] 2-2) According to the chloroform concentration value of the effluent measured, calculate the second single ite...

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Abstract

The invention relates to a method for improving the treatment effect of an activated carbon filter tank and prolonging the service life of activated carbon, which comprises the following steps: firstly, measuring the water quality of inlet and outlet water of the filter tank, and then measuring a first single specific value, a second single specific value, a CS coefficient and a TU coefficient of water quality parameters; when CS is larger than 1.5 or any one of the first single specific value and the second single specific value is larger than or equal to 0.9, repairing and flushing the activated carbon; and when the CS coefficient is less than or equal to 1.5 and the first and second single specific values are less than 0.9, according to the calculated TU coefficient, and when TU is greater than or equal to 0.1, repairing and flushing the activated carbon. The activated carbon filter tank operated by adopting the method can periodically recover the adsorption performance of activated carbon in a drinking water purification process and improve the removal capacity of the activated carbon on organic matters; and the problem that carbon is frequently replaced or regenerated in the application process of the activated carbon filter is effectively solved, and the method has important significance on improving the quality of drinking water, saving energy and reducing consumption.

Description

technical field [0001] The invention relates to a method for treating source water, in particular to a method for improving the effect of an activated carbon filter to remove organic matter in a water body, and at the same time a method for prolonging the service life of the activated carbon. Background technique [0002] With the rapid development of society, the shortage of water resources and the pollution of water environment are becoming more and more serious. People's requirements for water quality are constantly escalating. The safety of drinking water quality has become a major issue affecting human health and economic development. Except for heavy metals, most of the toxic and harmful substances in tap water are organic substances, and there are many kinds of organic substances in tap water. The traditional conventional water supply treatment process can no longer meet the needs of production and life in terms of effluent water quality. Activated carbon is widely us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02B01J20/34B01J20/20C02F101/30
CPCC02F1/281C02F1/001B01J20/3441B01J20/20C02F2101/30C02F2303/16
Inventor 韩梅
Owner 北京市自来水集团有限责任公司技术研究院
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