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Self-flushing filter-module of continuous operation «Crystall-DF»
- Low energy consumption
- Absence of flushing pumps
- Does not have wearing running gears
- Losses of sand are not more than 2% annually
- Solid and easy automation
- Minimum of shut-off and control valves
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.
Main characteristics
Video
How it works
Documents
Completed projects
News & publications
Main characteristics
Advantages
Technical specifications
- Minimum of shut-off and control valves and absence of difficult control systems
- Small building footprint
- Small energy consumption: electrical energy is needed only for the compressor, provides the airlifts operation
- Low operational costs. A standard version of the filter is manufactured of stainless steel and doesn’t have wearing running gears
- Minimal technical maintenance: simplicity of the process reduces the time of presence of the maintenance personnel up to a few minutes a day
- Absence of idle periods in operation while flushing: simultaneous filtration and flushing excludes the necessity of periodical work of the filter
- Absence of a separate flushing unit, absence of additional flushing filters
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Productivity
3 m/h to 100 thousand m3/h
Water losses on filter regeneration (together with "Crystal L")
1-2 % of capacity
Dimensions of basic filters
D, mm - from 640 to 2500
H, mm - from 3300 to 7700
H, mm - from 3300 to 7700
How it works
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.
Documents for download
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Questionary XLSX | 41.49 KB
Completed projects
All projectsMUE «Teplovodokanal» — Bodaibo city, Irkutsk region, Russia
MCU "SMZ" — BUI, KOSTROMA REGION, RUSSIA
Water services company of the Leningrad region — Issad Village, Leningrad Region, Russia
AO “Promenergo” — Sortavala, the Republic of Karelia, Russia
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