Particulate filtering device with a multi-layer water distribution and collection structure and method for using the same

A particulate filtering device with a multi-layer water distribution and collection structure, comprising:

• a tank, wherein a filtering space is formed in a lower portion of the tank and a back flushing expansion space is formed in an upper portion of the tank;
• particle filtering material filled in the filtering space;
• a plurality of water distribution and collection pipes arranged on a layer basis in the filtering space, wherein each of water distribution and collection pipes is arranged horizontally, and each of the water distribution and collection pipes is provided with filtering sticks;
• an upper water distribution pipe arranged in the back flushing expansion space, wherein the plurality of water distribution and collection pipes and the upper water distribution pipe each extends out the tank at one end in a sealing manner;
• a water inlet manifold connected in parallel with an extending end of each of one or more of the water distribution and collection pipes via a pipe,
• a filtered water outlet manifold connected in parallel with an extending end of each of the rest of the water distribution and collection pipes, wherein valves are respectively arranged between the water distribution and collection pipe and the water inlet manifold and between the water distribution and collection pipe and the filtered water outlet manifold, an extending end of the upper water distribution pipe is connected with the water inlet manifold and the filtered water outlet manifold via a tee pipe, a valve is arranged between the upper water distribution pipe and the water inlet manifold;
• an ozone gas-water mixing pipe connected between the upper water distribution pipe and the water inlet manifold, wherein a valve is arranged between the upper water distribution pipe and the filtered water outlet manifold;
• a back flushing and flushing drain-pipe connected between the upper water distribution pipe and the filtered water outlet manifold;
• and
• a water pump connected with the water inlet manifold, wherein
• an air outlet is arranged on a top of the tank, and an automatic air valve is arranged at the air outlet.