It is intended for operation in systems for treatment of water from underground and surface sources; in the systems for polishing of wastewaters; in the reverse osmosis systems.
The basic element of the plant is the filter module «Crystall-DF» which is a non-pressure continuous filter, where the filtration process and flushing of filtering layer occur continuously and simultaneously.
The filters are characterized with absence of running gears, which can be worn down and a low energy consumption. The breaks in operation (in a routine mode) for filter’s flushing are excluded owing to the system of continuous flushing of the filtering layer at the same time with the filtering process.
Plant’s operation technology
Water is treated in accordance with the principle of contraflow filtration. Feed water is supplied to the bottom part of the filter and is evenly distributed in the bed layer. Afterwards the water goes through the bed layer bottom-upwards. The treated filtrate is taken from the upper part of the filter through the clean water pipe. Polluted filtration layer from the bottom part of the filter is transported by means of the airlift into the flushing labyrinth.
The flushing of the bed is carried out with a clean filtrate, which comes from the bottom to the flushing labyrinth. Separation of polluted grains from the filter bed because of turbulence starts already in the transport pipe and a final treatment occurs in the flushing labyrinth.
Water after flushing is taken to the production sewage system or to the flushing water treatment unit. The treated filter bed is sedimented in the upper part of the filtering layer. Through this, the filtering load is in constant downward movement and the water treatment and flushing processes are simultaneous, continuous and do not require any adjustment.