Double-tank oxidation pond reactor for evaluating ozone catalytic oxidation efficiency

#This application is the National Stage Application of PCT/CN2018/071342, filed on Jan. 4, 2018, which claims priority to Chinese Patent Application No. 201711445606.6, filed on Dec. 27, 2017, which is incorporated by reference for all purposes as if fully set forth herein.

#The invention relates to an oxidation pond, in particular to a double-tank oxidation pond for evaluating catalytic ozonation efficiency.

#Catalytic ozonation, as an effective method for removing organic matter from wastewater, is widely used in wastewater treatment. In the process of sewage treatment, catalytic ozonation is a three-phase reaction of gas-liquid-solid (ozone, sewage and catalyst), which is a relatively complicated process, and thus the effect of catalytic ozonation of sewage is determined by various factors, such as ozone flow rate, aeration method, bubble size, catalyst size, filling volume, sewage flow rate, etc. For large sewage treatment plants, some data are needed to guide production. Since it is not possible to collect data experimentally in large and medium-sized equipment, some small test equipment is needed to evaluate the efficiency of catalytic ozonation of sewage.

#FIG. 1 is a schematic view of the double-tank oxidation pond for evaluating catalytic ozonation efficiency according to the present invention;

#FIG. 2 is a schematic view showing the connection of the sampling hole and the sampling needle according to the present invention;

#FIG. 3 shows the distribution of the sampling holes in the middle portion of the front face of the tank body A and in the left edge and the middle portion of the front face of the tank body B according to the present invention;

#The invention will be further illustrated in more detail with reference to the accompanying drawings and embodiments. It is noted that, the following embodiments only are intended for purposes of illustration, but are not intended to limit the scope of the present invention.

#Example: A double-tank oxidation pond for evaluating catalytic ozonation efficiency comprises a tank body A 100 and a tank body B 200, a base 16, water inlets 2, water inlet pipes 1, water outlets 17, water outlet pipes 40, sampling needles 19, ozone aeration pipes 9 and a communication pipe 6. The tank body A and the tank body B are independent from each other, they are fixed and spaced on the base side by side. The water inlets are provided on the tank body A, and the water inlet pipes are detachably connected to the water inlets. The water outlets are provided on the tank body B, and the water outlet pipes are connected to the water outlets. The tank body A and the tank body B both are provided with sampling holes 14, the sampling needles are removably plugged to the sampling holes. Gas inlet pipe openings 31 are opened on walls of the tank body A and the tank body B respectively, ozone aeration pipes are detachably inserted to the gas inlet pipe openings. A communication pipe is connected between the tank body A and the tank body B, and the tank body A and the tank body B are respectively provided with a filler supported overflow sieve plate 7 at inner lower ends thereof.

#The tank body A is formed by connecting three tank body sections in the vertical direction by a first flange 13, and the tank body B is formed by connecting three tank body sections in the vertical direction by a second flange 12. The tank body A has a cross-sectional area as twice as that of the tank body B, the tank body A and the tank body B has the same height and are connected by an upper beam 11 and a lower beam 11.