Shallow sand filter_Aite(Henan) environmental protection equipment Co.

Product introduction

The fully automatic shallow filter is composed of multiple standard high-speed sand tank units. It is equipped with a water distributor and a water collector, and has a two-way automatic flush valve, which can realize multiple standard high-speed sand tanks one by one during normal system operation. The backwash, fully automatic program control. It has the advantages of small backwash water consumption, convenient equipment installation and easy operation. The device has a high flow rate and requires no maintenance. According to different user requirements, there are vertical and horizontal two series. It is suitable for water quality treatment of industrial and civil circulating water systems.

Working principle

Positive washing filtration state: When the system is in the filtration state, the unfiltered water passes through the self (refined uniform-grained quartz sand/garnet). When water flows through the packing layer, impurities are trapped within the packing layer. There are a plurality of evenly distributed water collectors at the bottom of the filter, the filtered water is evenly collected and drawn out, and the advective filtration can make the filter filter at a high flow rate, and still achieve a better filtering effect.

Backwash state: As impurities continue to accumulate in the packing layer, the internal head loss will continue to increase. When the head loss of the inlet and outlet water reaches the set value, the system will automatically activate the constant pressure device to switch to the backwashing state. When the backwashing of this unit is completed, the hydraulic valve changes the direction of the water supply to realize the backwashing one by one, which is more convenient Clean up accumulated impurities.

When the system is in the state of backwashing, the filtration continues, and the standard unit sand tank to be backwashed is not filtered.