A kind of air-lifting rapid circulation filter cloth filter tank and its filtering method

Abstract

The invention relates to an air-lift rapid circulating type cloth media filter mainly comprising a filter chamber. The air-lift rapid circulating type cloth media filter is characterized in that the filter chamber is provided with a water distributing zone, a clean water zone and a water inlet zone; the water distributing zone is arranged below the clean water zone; separator plates are arranged in the water distributing zone and the clean water zone; the water inlet zone is arranged at one side of the filter chamber; a water inlet manifold is connected to the upper side of the water inlet zone; the water inlet zone is communicated with the water distributing zone through a water inlet branch pipe; a perforating air distributing pipe and a perforating water distributing pipe are arranged inside the water distributing zone; and a filter element and an air-lift accessory are arranged on the stainless steel plate. Compared with the other type cloth media filter chambers, the air-lift rapid circulating type cloth media filter chamber disclosed by the invention has the biggest advantages that an independent back-flushing device is not needed; few power plants are needed; and a back-flushing period is long.

Description

Technical field [0001] The invention relates to the technical field of water treatment devices, in particular to an air lift fast circulating filter cloth filter used in advanced sewage treatment and reclaimed water reuse and a filtering method thereof. Background technique [0002] Cloth filter technology is a new type of surface filtration technology developed in recent years, which can replace traditional deep-bed filtration equipment. Due to its compact structure, small head loss, small footprint, and low processing cost, it has been It has emerged in advanced sewage treatment. At present, there are two main types of filter cloth filters on the market, rotating disc filters and plate filters. [0003] Rotary disc filter is a relatively mature filter cloth filter process. The Aqua disk provided by Aqua-Aerobic Systems in the United States is widely used. The direction of the filtered water flow is from outside to inside, and the reverse suction method is reversed through the ro...

AI Technical Summary

Problems solved by technology

The disadvantage is: the backwashing water tank is set in the upper part of the filter disc, and the sediment in the lower part of the filter disc cannot be discharged from the pool

The disadvantages are: multiple electric valves are required to control the backwashing operation, the investment cost increases and the electric valves are not easy to control and are easily damaged; the vertical sheet filter invented by Shanghai Andingji Water Treatment Technology Co., Ltd. adopts the filtering form from the outside to the inside , the backwash adopts the backsuction method that the driving drives the suction cup to move and the filter is fixed. The main advantages are: there is no power equipment under the water in the pool, easy to wash, and less water consumption

The main disadvantages are: the backwash needs to contact the filter cloth, which is easy to cause wear on the surface of the filter cloth, and the filter cloth assembly is fixed at the bottom, making it difficult to replace

[0005] At present, the research on the filter cloth filter is focused on the selection of the backwashing method. The backwashing methods of the above two forms of the filter cloth filter can achieve a good flushing effect, but the flushing equipment is complicated and requires high installation accuracy. Exploring a new type of operation mode that reduces power equipment is very beneficial to the development of filter cloth filters

Images