Multifunctional composite water purification filter element and preparation method and application thereof
A water purification filter element and multi-functional technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., to achieve the effect of promoting catalytic decomposition, prolonging service life, and improving speed
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Embodiment 1
[0042] Embodiment 1: Preparation of multifunctional composite filter element
[0043] Take 3g of activated carbon fibers with an average length / diameter of 1cm / 8μm and an average specific surface area / porosity of 1000m 2 / g / 0.35, limit the activated carbon to the hydrothermal reactor.
[0044] Weigh 0.053g of copper acetate and dissolve it in 200ml of deionized water, add ammonia water dropwise while stirring at room temperature until the solution pH=7, and then continue stirring for 30min. The solution was quickly poured into a hydrothermal reaction kettle and mixed evenly with activated carbon fibers, and reacted at 190° C. for 2 hours. After the reaction is completed, cool to room temperature, wash the product with water, and dry thoroughly at 60° C. to obtain CuO-loaded activated carbon fibers.
[0045] The activated carbon fiber raw materials and the resulting CuO-loaded activated carbon fibers were observed with an electron microscope, as figure 1 shown. It can be ob...
Embodiment 2
[0048] Example 2: Test residual chlorine and heavy metal removal rate in the laboratory
[0049] Configure the test solution containing HClO and metal ions, make the test solution pass through the filter element of embodiment 1, adjust the flow rate to be 4L / min, and run continuously. After the total effluent is 13t, test the residual chlorine and heavy metal concentration in the filter element product water, and carry out with the test solution For comparison, the results are shown in Table 1.
[0050] Among them, the residual chlorine is tested by the national standard DPD method and an ultraviolet spectrophotometer. In the present invention, residual chlorine refers to free residual chlorine in water, including HClO, ClO - The total concentration of Cl in the Heavy metal ions were tested by ion chromatography.
[0051] Table 1 Water quality test (mg / L) after the composite filter element has a total water output of 13t
[0052] Chlorine Hg 2+
[0053] It ...
Embodiment 3
[0054] Example 3: On-the-spot testing of residual chlorine and heavy metal removal rates
[0055] Carry out identically with the test of embodiment 2, influent is untreated tap water in a certain place, regularly measure the quality of produced water, and compare with influent water quality, the results are shown in Table 2 and figure 2 .
[0056] Table 2 Water quality test (mg / L) of the composite filter element after 10 tons of total effluent
[0057] Chlorine Hg 2+
[0058] It can be seen that after the composite filter element of Example 1 treats 10 tons of water, the concentrations of various pollution indicators in the produced water are all less than 0.001 mg / L. In addition, through repeated sampling and monitoring, it was found that during the operation process of 0-10t produced water, the quality of the effluent was stable, and there was no phenomenon of exceeding the standard, which met the drinking water standard.
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