Water filter unit and filter method thereof

Abstract

The invention discloses a water filter unit and a filter method thereof, the water filter unit comprises a first filter tank and a second filter tank, wherein a first water discharging hole of the first filter tank is connected with a three-way valve and then respectively communicated with a washing hole and a water discharging pipe of the second filter tank, a first water discharging hole of thesecond filter tank is connected with the three-way valve and then respectively communicated with a washing hole and a water discharging pipe of the first filter tank, second water discharging holes oftwo filter tanks are communicated with the water discharging pipes, water feeding holes of two filter tanks are communicated with each other and then communicated with a water feeding pipeline, and sewage draining exits of two filter tanks are communicated with each other and then communicated with a sewage draining pipeline; two filter tanks of the water filter unit can complete the filter independently and can also backwash the filter element of the other at the same time of filter, and the backwashing is simple and the filter efficiency is greatly enhanced.

Description

technical field [0001] The invention belongs to the field of water supply and drainage, in particular to a water filtering unit and a filtering method using the unit. Background technique [0002] Water is a precious natural resource. With the rapid development of industry and agriculture in our country, water resources have been used unrestrainedly, resulting in a large amount of domestic and industrial sewage, which is finally discharged into natural water bodies, forming a vicious circle and seriously endangering human health. The natural environment, and have adverse effects on human health, the protection of water resources is urgent. At present, with the continuous advancement of technology, China has also made great progress in water treatment, including the introduction of technical cooperation from Japan, Germany, the United States and other countries, which is of great help to China's water treatment. Currently, membrane treatment has achieved Large practical spac...

AI Technical Summary

Problems solved by technology

Although the membrane has the above-mentioned advantages that it can be used to filter industrial and domestic sewage, there are still many problems. We know that the membrane is treated by micropore interception, but the pores will eventually be blocked, and cleaning the membrane becomes the user's responsibility. biggest problem

Although the manufacturers of filter equipment advertise that the membrane can be cleaned by backwashing or adding chemicals, the actual effect is not ideal, because no one has the same water discharge, and the discharge standards are different every day, resulting in It is difficult to grasp the starting point of cleaning. Once the starting point of cleaning is passed, it will cause serious blockage. At this time, the difficulty of backwashing will increase, the cleaning cost will inevitably increase, and even cause problems such as membrane burst. It will cause secondary pollution, which is contrary to the theme of environmental protection. However, once the membrane bursts, it will cost a lot to replace it. For many companies, it is a decoration that many companies can afford but cannot afford.

At the same time, since the filtration products currently on the market are only used for small-scale filtration operations and cannot be used for large-scale filtration operations according to customer needs, the benefits of water treatment are not obvious

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