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Method for removing atrazine from drinking water

An atrazine and drinking water technology, applied in chemical instruments and methods, water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problems of slow adsorption speed of powder activated carbon, complicated treatment process, etc., to prevent adverse effects, Ease of operation and the effect of reducing dosage

Inactive Publication Date: 2009-06-03
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages of the existing powdered activated carbon treatment process such as complicated process and slow adsorption speed of powdered activated carbon, the present invention proposes a method for removing atrazine in drinking water with fast adsorption speed and high removal rate of atrazine

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The tap water containing 200 μg / L atrazine was filtered through polypropylene cotton to obtain clear tap water. The 2.0g model is filled into the activated carbon fiber of ST-1300 in the adsorption column ( 15×90mm), the activated carbon fiber filling volume is 12.5cm 3 . Tap water containing 200 μg / L atrazine flows through the activated carbon fiber packed bed at room temperature at a flow rate of 1.25 L / h. The tap water treatment capacity is 875 L. The concentration of atrazine in the effluent is 0.2 μg / L. The removal rate is 99.9%.

Embodiment 2

[0025] The adsorbent activated carbon fibers in Example 1 were changed to models ST-1000, ST-1500, ST-1600, A10 and A12, and other treatment methods were the same as in Example 1. As a result, the removal rate of atrazine remained basically the same except that the treatment volume of each batch of tap water was changed.

Embodiment 3

[0027] Change the concentration of atrazine in the tap water in Example 1 to 50 μg / L, and other treatment methods are the same as in Example 1. The treatment capacity of tap water reaches 2190 L, the concentration of atrazine in the effluent is 0.1 μg / L, and the removal rate of atrazine 99.8%.

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PUM

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Abstract

The invention discloses a method for removing atrazine from drinking water. The method is characterized in that tap water or source water is primarily filtered to remove the suspended substance in water; under the condition at the temperature of 1 to 40 DEG C, the tap water or the source water with insignificant amounts of the atrazin flows through an adsorption column filled with activated carbon fiber or modified activated carbon fiber at the flow rate of 30 to 400BV / h; the atrazin is absorbed on the activated carbon fiber or the modified activated carbon fiber and is removed from the water. The method has the advantages that the removal rate of the atrazin is close to 100% after the drinking water with insignificant amounts of the atrazin is treated in the method, and the concentration of the atrazin is far less than the concentration limit value of the atrazin in Sanitary Standard for Drinking Water (GB 5749-2006).

Description

technical field [0001] The invention relates to the field of deep purification of drinking water, in particular to a purification method using an activated carbon adsorbent. Background technique [0002] Atrazine, also known as Atrazine, is a synthetic chemical herbicide belonging to the triazine pesticides. Atrazine is a persistent dryland broad-spectrum herbicide that inhibits photosynthesis. It can control annual grass weeds and broad-leaved weeds. It also has a certain inhibitory effect on some perennial weeds. It is mainly used in corn, sorghum, Sugarcane, tea and orchard weeding. Atrazine has a long half-life and has soil leaching properties. It is easily leached into deeper soil layers by rainwater and irrigation water, or enters rivers and lakes with surface runoff, causing pollution to surface water and groundwater. Atrazine has been detected in the surface waters of Taihu Lake, Huangpu River, Yangtze River, Songhua River, Liaohe River, Guanting Reservoir and grou...

Claims

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Application Information

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IPC IPC(8): C02F1/58C02F1/28
Inventor 唐登勇陈敏东郑有飞郭照冰付晓茹李俊
Owner NANJING UNIV OF INFORMATION SCI & TECH
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