Water treatment method of nano zero-valent iron-nickel activated persulfate
A nano-zero-valent iron and persulfate technology, applied in the field of water treatment, can solve the problems of reducing the removal efficiency of organic pollutants, reducing the utilization rate, etc., achieving high activation efficiency, low production cost, and solving the effect of agglomeration and passivation
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Embodiment 1
[0092] This embodiment provides a method for preparing a nanometer zero-valent iron-nickel composite material, comprising the following steps:
[0093] 1.1 Crush and screen the laterite nickel ore to obtain granular materials with a particle size of <0.0374mm;
[0094] 1.2 Add 8mmol of granular material into a three-necked flask, add 100mL of 90% ethanol solution into the three-necked flask and stir for 20h-24h, then filter and centrifuge, wash with deionized water for 2-4 times, then place it in an oven to dry Dry to obtain the laterite nickel ore powder; then add 80mL of 1mol / L-20mol / L potassium borohydride or sodium borohydride solution to the laterite nickel ore powder into the three-necked flask, stir for 2h-10h, and then suction filter to obtain the precipitate , the obtained precipitates were washed with absolute ethanol, then sucked dry, and placed in a vacuum drying oven to dry to obtain nanometer zero-valent iron-nickel composite materials.
Embodiment 2
[0096] In this example, the nanometer zero-valent iron-nickel composite material prepared in Example 1 is used as the catalyst to catalyze persulfate, and the organic wastewater W1 containing acid orange two dyes, the organic wastewater W2 containing bisphenol A, and the organic wastewater containing 2-4- The organic wastewater W3 of dichlorophenol, six groups of control groups are set at the same time, the conditions of each control group and the experimental group are specifically shown in Table 1, wherein the concentration of organic wastewater W1 is 50mg / L-2000mg / L, and the pH value is 2-11; The concentration of organic wastewater W2 is 10mg / L-2000mg / L, and the pH value is 2-11; the concentration of organic wastewater W3 is 10mg / L-2000mg / L, and the pH value is 2-11. Organic wastewater W1, organic wastewater W2 and The amount of organic wastewater W3 is taken as 1L. The dosages of organic wastewater W1, organic wastewater W2 and organic wastewater W3 are all taken as 1L.
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