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Method for removing alachlor in water body

A technology of alachlor and water body, applied in the field of environmental treatment, can solve the problems of small adsorption capacity and low specific surface area, and achieve the effects of reducing alkalinity, large specific surface area and increasing specific surface area

Active Publication Date: 2020-12-18
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the smooth surface of steel slag, the specific surface area is not high, so the adsorption capacity is small

Method used

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  • Method for removing alachlor in water body
  • Method for removing alachlor in water body
  • Method for removing alachlor in water body

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A kind of method of removing alachlor in water body of the present invention, processing flow is as figure 1 shown, including the following steps:

[0033](1) The converter steel slag was subjected to high temperature treatment at 700°C for 4 hours and then cooled for later use. Take 100 g of the high temperature treated converter steel slag and 1 L of acetic acid solution with a volume concentration of 5% and mix and react for 2 hours to obtain modified converter steel slag.

[0034] (2) Get 2 parts of alachlor solution that volume is 1L, concentration is 100mg / L, add respectively 10g unmodified converter steel slag, the modified converter steel slag in 10g step (1), carry out shock adsorption at normal temperature, Complete treatment of the alachlor solution.

[0035] Samples were taken from the system after 0.5h, 1h, 2h, 3h, and 4h of the shock adsorption reaction, and the content of alachlor in the solution was detected by high performance liquid chromatography. Th...

Embodiment 2

[0043] A kind of method of removing alachlor in water body of the present invention, processing flow is as figure 1 shown, including the following steps:

[0044] (1) Treat the converter steel slag at 700° C. for 4 hours and then cool it for later use. Take 100 g of the converter steel slag after the high temperature treatment and 1 L of acetic acid solution with a volume concentration of 5% for a shock reaction for 2 hours to obtain the modified converter steel slag.

[0045] (2) Take 6 parts of alachlor solution with a volume of 1L, the concentration is 50mg / L, 60mg / L, 70mg / L, 80mg / L, 90mg / L, 100mg / L respectively, and add 10g each to step (1) The modified converter steel slag was shaken and adsorbed at room temperature for 1 hour to complete the treatment of alachlor solution.

[0046] Sampling from the system uses high-performance liquid chromatography to detect the content of alachlor in the solution, and the measurement results are shown in Figure 4 . Figure 4 It is ...

Embodiment 3

[0048] A kind of method of removing alachlor in water body of the present invention, processing flow is as figure 1 shown, including the following steps:

[0049] (1) Treat the converter steel slag at 700° C. for 4 hours and then cool it for later use. Take 100 g of the converter steel slag after the high temperature treatment and 1 L of acetic acid solution with a volume concentration of 5% for a shock reaction for 2 hours to obtain the modified converter steel slag.

[0050] (2) Get 6 parts of alachlor solutions that have a volume of 1L and a concentration of 70mg / L, add 10g of the modified converter steel slag in step (1) respectively, carry out shock adsorption at normal temperature for 1h, and after filtering, obtain the alachlor solution adsorbed with formazan. Modified converter slag with oxalamine.

[0051] (3) The modified converter steel slag that absorbs alachlor obtained in step (2) is added to 20mL respectively, and the volume concentration is 0%, 1%, 3%, 5%, 7%,...

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Abstract

The invention discloses a method for removing alachlor in a water body. The method comprises the following steps: mixing modified steel slag with alachlor waste water, and carrying out oscillation adsorption to finish the treatment on the alachlor waste water, wherein the modified steel slag is prepared by carrying out high-temperature treatment and treatment by an acetic acid solution on steel slag. According to the method provided the invention, the modified steel slag with large specific surface area, large adsorption capacity and many adsorption sites are adopted to adsorb the alachlor, sothat the waste reutilization of the metallurgical furnace slag is realized, and the alachlor in the water body can be effectively removed. The method has the advantages of low cost, high treatment efficiency, good treatment effect, good reuse effect, small usage amount of added chemical reagents, environmental friendliness and the like.

Description

technical field [0001] The invention belongs to the field of environmental management, and in particular relates to a method for removing alachlor in water bodies. Background technique [0002] Herbicides are widely used in agriculture, forestry, animal husbandry, urban planning management and other fields, and play an important role in people's daily life. The extensive use of pesticides also has its disadvantages, which are mainly reflected in the negative impact on the environment and the harm to human health. Alachlor, whose chemical name is 2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamide, is widely used in the weed control of crops such as corn, sorghum and soybean . However, alachlor is stable and difficult to biodegrade, and has bioaccumulation, which has a serious interference effect on the endocrine of humans and animals. At the same time of extensive and long-term use, a large amount of alachlor enters the water body, making the water a source of pollu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F9/04B01J20/10C02F101/38
CPCB01J20/06B01J20/08B01J20/103C02F1/281C02F1/722C02F1/725C02F2101/306C02F2101/38C02F2305/026
Inventor 程敏袁玉洁曾光明黄丹莲赖萃许飘张辰刘洋万佳龚小敏薛文静
Owner HUNAN UNIV
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