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A method for removing trace glyphosate in drinking water source water

A glyphosate and source water technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of increased secondary pollution, difficult effective promotion, difficult deep purification, etc. , to achieve the effects of improving the flow state, reducing the possibility of secondary pollution, and reducing operating costs

Active Publication Date: 2021-08-10
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the potassium permanganate oxidation method can obtain a better effect of removing glyphosate and can significantly reduce the content of glyphosate in water, due to the introduction of potassium permanganate as an oxidant, the oxidation products of potassium permanganate and glyphosate It is still possible to remain in the water, the risk of secondary pollution is significantly increased, and the highest removal rate reported in the literature is 91.82%, and some glyphosate remains in the source water
Adsorption is the most commonly used treatment method at present, and the adsorbents used include activated carbon, iron-aluminum mud, natural pyrite and magnetic carbon-based adsorbents, etc., but these methods are either expensive to operate, difficult to effectively promote, or difficult to deep purification

Method used

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  • A method for removing trace glyphosate in drinking water source water
  • A method for removing trace glyphosate in drinking water source water

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0034] 1.0g of Fe(NO 3 ) 3 9H 2 O, 1.0g Ni(NO 3 ) 2 ·6H 2 O and 1.0 g ZrCl 4 After mixing, add 5.0mL of 0.1mol / L hydrochloric acid and 80mL of DMF and stir to dissolve, then add 2.0g of 2-aminoterephthalic acid, mix well and transfer to a 250mL pressure-resistant airtight reaction kettle. Under the conditions of reaction for 20 hours, after cooling, transfer it to a 100mL centrifuge tube and centrifuge at 3000rpm to obtain the crude product, rinse twice with 20mL DMF and 20mL ethanol respectively, and place the product powder in a stoppered 50mL colorimetric tube with anhydrous Soak in ethanol for 72 hours, and finally vacuum dry at room temperature to obtain Fe / Zr / Ni-MOFs material, the SEM image of which is shown in figure 1 . Mix the prepared Fe / Zr / Ni-MOFs material with quartz sand with a particle size of 0.05 mm to 0.1 mm at a weight ratio of 2:1 and fill it evenly in the chromatography filter column. A 2 μm microporous membrane was inserted to prevent the loss of t...

specific Embodiment 2

[0036] 1.0g of Fe(NO 3 ) 3 9H 2 O, 2.0g of Ni(NO 3 ) 2 ·6H 2 O and 1.5 g ZrCl 4 After mixing, add 5.0mL of 0.1mol / L hydrochloric acid and 80mL of DMF and stir to dissolve, then add 2.5g of 2-aminoterephthalic acid, mix well and transfer to a 250mL pressure-resistant airtight reaction kettle. Under the conditions of reaction for 15 hours, after cooling, transfer to a 100mL centrifuge tube and centrifuge at 3000rpm to obtain the crude product, rinse twice with 20mL DMF and 20mL ethanol respectively, and place the product powder in a stoppered 50mL colorimetric tube with anhydrous Soaked in ethanol for 72 hours, and finally vacuum dried at room temperature to obtain Fe / Zr / Ni-MOFs material. Mix the obtained Fe / Zr / Ni-MOFs material with quartz sand with a particle size of 0.1mm to 0.5mm in a weight ratio of 3:1 and fill it evenly in the chromatography filter column, and at the same time put 2μm The microporous membrane prevents the loss of the adsorbent, and a chromatography ...

specific Embodiment 3

[0038] 1.0g of Fe(NO 3 ) 3 9H 2 O, 2.5g of Ni(NO 3 ) 2 ·6H 2 O and 0.5 g ZrCl 4 After mixing, add 5.0mL of 0.1mol / L hydrochloric acid and 80mL of DMF and stir to dissolve, then add 1.5g of 2-aminoterephthalic acid, mix well and transfer to a 250mL pressure-resistant airtight reaction kettle. Under the conditions of reaction for 18 hours, after cooling, transfer it to a 100mL centrifuge tube and centrifuge at 3000rpm to obtain the crude product, rinse twice with 20mL DMF and 20mL ethanol respectively, and place the product powder in a stoppered 50mL colorimetric tube with anhydrous Soaked in ethanol for 72 hours, and finally vacuum dried at room temperature to obtain Fe / Zr / Ni-MOFs material. Mix the obtained Fe / Zr / Ni-MOFs material with quartz sand with a particle size of 0.05mm to 0.1mm in a weight ratio of 4:1 and fill it evenly in the chromatographic filtration column. At the same time, put 2μm The microporous membrane prevents the loss of the adsorbent, and a chromatog...

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Abstract

The invention provides a method for removing trace glyphosate in drinking water source water, and the specific steps include: material preparation, column packing, removal and regeneration; the invention not only has simple process, convenient and quick operation, and low price, but also the material can be recycled Utilization, the treatment effect is remarkable, it is suitable for the removal of glyphosate in slightly polluted water, and has good economic and environmental benefits.

Description

technical field [0001] The invention relates to the technical field of drinking water purification treatment, more specifically, it relates to a method for removing trace glyphosate in drinking water source water. Background technique [0002] Glyphosate is the most widely used and the largest output herbicide in the world, and it is also the systemic, conductive, and destructive broad-spectrum herbicide used in my country. It has the advantages of high efficiency, low toxicity, and wide herbicidal spectrum. It has been widely used It is used in fields such as non-farmland, orchard, road and forestry. With the increasing use of glyphosate, it has become one of the important pollution sources of drinking water source water. Glyphosate production wastewater can be treated by adsorption method, coagulation sedimentation method or coagulation sedimentation combined with Fenton method, but these methods are mainly used for the removal of high content glyphosate in wastewater, not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30B01J20/22C02F1/28C02F101/30
Inventor 蔡美强胡建强李开春王倩潜浩杰金米聪宋志军
Owner ZHEJIANG GONGSHANG UNIVERSITY