Automatic shallow sand filter for clean water

Product introduction

The clean water automatic shallow sand 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 in normal system operation. Individual backwashing one by one, 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 and filtering state: When the system is in the filtering state, the unfiltered water is evenly distributed through the self-developed water distributor, and the water passes through the packing layer (refined uniform-grained quartz sand/garnet) in the filter in a laminar flow state. 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.

Applications

1. Filtration of industrial water has corresponding system requirements for water quality. Such as: steel mill oxygen lance water, boiler, heat exchanger water supply filtration, etc,can filter out impurities in the water and avoid blockage of pipelines and nozzles.

2. Filtration system of industrial circulating water.

3. The treatment of raw water can filter the surface river water, lake water, sea water, reservoir water, well water and urban tap water as the water source for urban districts with differentiated water supply, etc., to remove sand particles, suspended solids, algae, etc. in the water.

4. Agricultural irrigation, especially suitable for water sources with high flow and good impurity content, such as farmland irrigation, lawn irrigation in parks and golf courses, etc.

Product Details