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With the rapid economic development of society around me, not by the people concerned had arsenic pollution has become increasingly serious. As arsenide have greater toxicity and is widely used in industrial and agricultural production, arsenic pollution to the environment particularly on issues such as water pollution, causing widespread concern workers worldwide environmental disciplines. Therefore, the search for a thorough removal of arsenic, simple and inexpensive method for removing arsenic water. For arsenic wastewater treatment and water purification has practical significance. In this paper, magnesium slag and red mud preparation of the new ceramic filter balls as adsorption material, namely magnesium slag ceramic filter balls (MPB) and red mud-based eco-ceramic filter balls (RPB), utilization of its resources, and will load in TiO2 modified ceramic filter balls, namely magnesium slag TiO2 loaded TiO2 loaded ceramic filter balls with red mud-based eco-ceramic filter balls magnesium slag carried out its removal of arsenic in water law and mechanism. Through this research the following conclusions. (1) This experiment studied the MPB-Ti to As (V) ions removal is studied and that, for a concentration of 2mg / L of the solution, the optimum adsorption conditions: Solution pH = 2, adsorption time 240min, filter ball dosage of 20g / L, its arsenic removal efficiency of 95.96%. The L9 (34) orthogonal test step closer analysis, the removal of As (V) The optimum conditions of temperature, time, dosage, pH was 323K, 6h, 6g, 2 时, MPB-Ti of As ( V) adsorption effect of up to 99%. (2) MPB-Ti on As (V) adsorption kinetics followed pseudo two adsorption kinetics model, and in different concentrations and under the influence of different temperatures were calculated its adsorption rate constant and the adsorption reached equilibrium half time, the activation energy absorption 10.517kJ/mol; studied MPB-Ti to go to (V) adsorption thermodynamics, adsorption found MPB-Ti As (V) can be better described Freundlich equation, calculate the entropy of adsorption (? ) S = 16.48J / (k-mol). Adsorption enthalpy (?) H = 36.609kJ-mol. What adsorption free energy G is less than zero, indicating that the adsorption is a spontaneous process. (3) Comparison of four kinds of absorbent material in the range of pH3-11 adsorbed As (Ⅲ) of the law, found that MPB-Ti adsorption effect than other absorbent material; studies show, MPB-Ti adsorbed As (Ⅲ) in the neutral and weakly alkaline conditions to achieve the best. (4) The L16 (45) orthogonal experiment, the types of materials on the removal of As (Ⅲ) the most significant impact. With MPB-Ti is the best. When a fetch 0.1, the adsorbent material F = 2.838 gt; F0.1 (3,15) = 2.49, significant difference adsorbent material time performance significantly. L9 (34) orthogonal test showed MPB-Ti Adsorption of As (Ⅲ) optimum conditions: temperature, time, dosage, pH was 313K, 3h, 4g, 8 时, MPB-Ti on As (Ⅲ) Adsorption effect of up to 85%; (5) in pH = 2, the dosage is 4g, 4h adsorption time under the conditions studied MPB-Ti photocatalytic oxidation of adsorbed simultaneously removing As (Ⅲ), adsorption removal Increases of 11%.
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