Bromate Formation Characteristics of UV Irradiation, Hydrogen Peroxide Addition, Ozonation, and Their Combination Processes

<table>Changes in concentrations of <svg height="11.6125" id="M111" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 23.9 11.6125" width="23.9" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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<g transform="matrix(.017,0,0,-.017,.062,11.55)"><path d="M372 352v-2q176 -27 176 -159q0 -99 -95 -151q-73 -40 -196 -40h-221v28q65 5 78.5 19t13.5 76v404q0 63 -12 77t-72 18v28h257q102 0 150 -34q26 -18 41 -48.5t15 -65.5q0 -111 -135 -150zM213 362h47q80 0 117.5 32t37.5 96q0 56 -33 92t-100 36q-41 0 -56 -10
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<g transform="matrix(.012,0,0,-.012,28.925,15.638)"><path d="M285 378v-2q65 -13 102 -54.5t37 -97.5q0 -57 -30.5 -104.5t-74 -75t-85.5 -42t-72 -14.5q-31 0 -59.5 11t-40.5 23q-19 18 -16 36q1 16 23 33q13 10 24 0q58 -51 124 -51q55 0 88 40t33 112q0 64 -39 96.5t-88 32.5q-29 0 -64 -11l-6 29q77 25 118 57.5t41 84.5
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</svg>, and 4-CBA during O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> at various H<sub>2</sub>O<sub>2</sub> doses. The concentrations in the legend mean the H<sub>2</sub>O<sub>2</sub> dose. The symbols in the bracket mean O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> at neutral pH without 4-CBA (N-1), O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> at neutral pH with 4-CBA (N-2), O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> at acidic pH without 4-CBA (A-1), and O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> at acidic pH with 4-CBA (A-2).</table>

International Journal of Photoenergy

fig5

Figure 5

Figure 5: Bromate Formation Characteristics of UV Irradiation, Hydrogen Peroxide Addition, Ozonation, and Their Combination Processes 