Preparation method and application of parathion-methyl adsorption material
A technology of methyl parathion and adsorption materials, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, and can solve problems such as increased sludge production, inability to balance sulfur and phosphorus adsorption effects with cost, etc. , to achieve the effect of low chemical consumption, solving the incompatibility between removal effect and operating cost, and high removal efficiency
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Embodiment 1
[0023] A kind of methyl parathion adsorption material, including iron manganese oxide modified simultaneously with ethylenediaminetetraacetic acid and cetyltrimethylammonium bromide; the modified iron manganese oxide is coated on On the surface of the filter material, methyl parathion is removed by filtration, which solves the problem of increased sludge production caused by direct addition to water, and has the advantages of high removal efficiency and low cost.
[0024] A preparation method for preparing the above-mentioned methyl parathion adsorption material, comprising preparing iron oxide, preparing manganese oxide, and mixing and modifying; wherein the mixing and modifying step is mixing iron oxide and manganese oxide and adding ethylenediamine Modified with tetraacetic acid and cetyltrimethylammonium bromide. Specifically include the following steps:
[0025] (1) Accurately weigh 6.50g FeSO 4 ·7H 2 O, and dissolved in 500mL deionized water, configured as a solution....
Embodiment 2
[0031] Steps (1)~(4) are identical with embodiment 1;
[0032] Step (5) is filling the obtained iron-manganese-based modified filter material in the filter reactor. The filter tank is cylindrical, with an inner diameter of 3.5 cm and a height of 15 cm. The filtration flow rate of the filter is 3.5m / h, the influent methyl parathion concentration is 0.125mg / L, the effluent concentration is 0.008mg / L, and the removal rate is 93.6%.
[0033] pass figure 1 It can be seen that the removal effect of the iron-manganese-based modified filter material prepared by the present invention on the filtration and removal of methyl parathion is that the concentration gradient of methyl parathion in the influent changes between 0.04~0.155 mg / L, and the filtration rate is 3.5 mg / L. m / L, its removal rate ranges from 90 to 98%; figure 2 It can be seen that when using non-modified conventional quartz sand, manganese sand, and zeolite filter materials, the concentration gradient of methyl parathi...
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