High-speed shallow sand filter

Product description

The high-speed shallow sand filter has a large amount of filtration water, good filtration effect, and fast filtration flow rate. The normal filtration rate can be about 40m/h, and it can reach 60m/h according to the water quality; product water is used for filter backwashing, and no booster pump and Backwash pump; the backwashing lasts 2-3min, and the backwashing water volume is less than 3m³. High filtration accuracy, impurity filtration accuracy can be below 0.10mm, effluent turbidity can be less than 0.5NTU.

Backwash status

The filtration system consists of a standard unit sand tank, and the filtration flow can be increased from 30.6 cubic meters per hour to 2500 cubic meters per hour. Automatic backwashing: The backwashing of the equipment is automatically identified and controlled by the intelligent control system without manual intervention. Even if the suspended matter in the water fluctuates, the equipment may automatically adapt. The water supply to the shallow sand filter is uninterrupted; when the equipment is backwashed, the filtration process is carried out at the same time, and the system supplies water as usual. The cloth and water collecting devices are adopted. Due to the water distribution system and the water collectors with very uniform distribution of the filtration system, the water flow is layered during the whole filtration process, the plane of the filter sand bed is always flat during the filtration process, and the water quality of the effluent is stable. The system has an automatic backwash valve. The backwash of the sand filter tank is not carried out at the same time, but in the normal operation of the system, it is backwashed one by one in turn, and there is no need to consider setting up a backwash pump.

Scope of application

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 the blockage of several nozzles in the pipeline.

2. It is used for industrial water, domestic water and municipal water supply systems that require effluent turbidity ≤5mg/L to meet drinking water quality standards;

3. Removal of suspended solids and solids in industrial sewage;

4. It can be used as pretreatment equipment in ion exchange softening and desalination systems, rough filtration equipment for industrial water supply that does not require high water quality; and used in swimming pool circulation treatment systems, cooling circulating water purification systems, etc.;

5. Raw water treatment --- It can filter surface river water, lake water, sea water, reservoir water, well water and urban tap water as the water source for urban subdivision water supply, etc., to remove sand particles, suspended solids, algae, etc. in the water.

Product Details