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A method for efficiently treating deltamethrin wastewater

A deltamethrin and wastewater technology, which is applied in the field of efficient treatment of deltamethrin wastewater, can solve the problems of high cost of chemical treatment, secondary pollution of the environment, and the stability of the repeated use of adsorbents, etc.

Active Publication Date: 2020-11-06
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Description
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  • Application Information

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Problems solved by technology

Although the physical method is relatively simple, there are problems such as repeated use of the adsorbent and poor stability; the chemical method is expensive and often causes secondary pollution to the environment; although the biological method is low in cost and does not cause secondary pollution, the treatment cycle is long and Microorganisms are susceptible to environmental conditions

Method used

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  • A method for efficiently treating deltamethrin wastewater
  • A method for efficiently treating deltamethrin wastewater
  • A method for efficiently treating deltamethrin wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The influence of embodiment 1 deltamethrin initial concentration

[0033] The deltamethrin solutions with initial concentrations of 50, 100, 200, and 300 mg / L were treated with 125W high-pressure fluorescent mercury lamps, and the effects of initial concentrations on the removal rate of deltamethrin were investigated. Experimental conditions: reaction time 240 min, Zn 0.99 f 0.01 The concentration of the O catalyst was 0.5 g / L, the temperature was 30 °C, and the pH was neutral. After the reaction, the reaction solution was taken out, centrifuged at a speed of 6000r / min for 20 min, and the concentration of deltamethrin in the supernatant was determined. When the initial concentration was 50 and 100 mg / L, the removal effect of deltamethrin was better, and the removal rates were 61.4% and 56.2%, respectively.

Embodiment 2

[0034] Example 2 Zn 0.99 Fe 0.01 The influence of O dosage

[0035] A 125 W high-pressure fluorescent mercury lamp was used to treat deltamethrin solution with a concentration of 100 mg / L, and the effect of catalyst dosage on the removal rate of deltamethrin was investigated, and Zn 0.99 Fe 0.01 The concentration of O is 0.0, 0.1, 0.5, 1.0, 2.0 g / L respectively, and other experimental conditions are the same as above (suspension treatment method and measurement method are the same as in Example 1, the same below), and the concentration of deltamethrin in the supernatant is measured . When Zn 0.99 Fe 0.01 The mass concentration of O was 1.0 g / L, and the removal rate reached the highest, which was 69.6%.

Embodiment 3

[0036] The influence of embodiment 3 temperature

[0037] A 125W high-pressure fluorescent mercury lamp was used as a light source to treat deltamethrin solution with a concentration of 100 mg / L, and the effect of reaction temperature on the removal rate of deltamethrin in wastewater was investigated. The photocatalytic degradation temperatures were set at 20, 30, 40 , 50°C. Other experimental conditions: reaction time 240 min, Zn 0.99 Fe 0.01 The concentration of the O catalyst was 1.0 g / L, the temperature was 30 °C, and the pH was neutral. Considering the removal rate and energy consumption comprehensively, 30°C was selected as the optimal reaction temperature in this experiment, and the removal rate was 70.4%.

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Abstract

A method for efficiently treating deltamethrin wastewater, relating to a method for treating chemical wastewater, Zn 0.99 Fe 0.01 The preparation of O photocatalytic materials uses zinc nitrate hexahydrate, ferric chloride hexahydrate, citric acid, sodium citrate and potassium hydroxide as materials by co-precipitation method, and undergoes a process of stirring and mixing, precipitation, washing, drying, grinding and calcination Steps to prepare. Photocatalyst Zn 0.99 Fe 0.01 O can significantly increase the photodegradation rate of deltamethrin. Under the irradiation of 125W high-pressure fluorescent mercury lamp, when the initial concentration of deltamethrin is 100 mg / L, Zn 0.99 Fe 0.01 When the mass concentration of O was 1.0g / L, the reaction temperature was 30℃, the pH value was 7.38, and the reaction time was 6h, the removal rate of deltamethrin wastewater was over 90%. The method has the advantages of simple process, no secondary pollution to the environment, wide source of raw materials, cheap price, easy industrialization, and easy and rapid conversion and application.

Description

technical field [0001] The invention relates to a method for treating chemical wastewater, in particular to a method for efficiently treating deltamethrin wastewater. Background technique [0002] my country is a large agricultural country, and pesticides have always been the pillar industry of my country's agricultural economy, making outstanding contributions to the development of the national economy. Pyrethroid pesticides have become the main varieties produced in large quantities and widely used at home and abroad because of their economical, efficient, and convenient features in the control of agricultural pests. As a synthetic third-generation pyrethroid insecticide, deltamethrin has the characteristics of high activity, low dosage and light stability, and has become the main species for preventing and controlling insect pests in agriculture, animal husbandry, fishery and forestry. However, with the rapid development of the pesticide industry, the expansion of produc...

Claims

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Application Information

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IPC IPC(8): C02F1/30B01J23/80C02F101/30
Inventor 臧淑艳于波单华旭党璐一
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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