Shallow Sand Filter

Filter status: when the system is in the filter state, the pressure water from the filter tank inlet into the cloth water system, uniform to the filter material layer, when the water flow through the filter media layer, the suspended material is suspended. The collector at the bottom of the filter with precision gap, the filtered water is uniform collection, and filter out. The collector on the precision of the gap can effectively prevent the loss of filter media.

Backwash status: pressure loss increases with the impurities in the filter layer of the continuous accumulation, when the pressure increases to a certain set value (or reach a set time value), the system will automatically convert to backflushing state. Pressurized water catchment device through the bottom of the filter into the filter layer, the erosion, the closure of the pollutants off and discharge filter.

Using the full automatic control and filtering system, using the modular design, according to the size of the flow, select a number of filter units. Can use the time, pressure and other ways to automatically start the anti - washing system, the filter unit in turn for the anti - flush, other units are still filtering. Anti washing efficiency, anti washing time is short, the water saving. Filter material has better resistance to bacterial contamination, and the effect of anti - washing is better.