Reverse Osmosis Plants for Brackish Water, Sea Water Reverse Osmosis Plants
Reverse Osmosis is an excellent system for the desalination of brackish and sea water with low investment and running costs. Our company offers both systems for brackish and sea water desalination plants: Skid and or container mounted plants. Our production range varies from 50 m3/d up to 500 m3/d (13210 gpd - 132100 gpd) as container plants and skit mounted plants up to 1200 m3/d ( 317000 gpd). Off course several plants can run in parallel for higher need of water. Our systems are complete with pre and post treatment. We always try to find the best solution for each customer and his individual wishes and requirements.
Technicians
Our highly qualified technicians with their team resolve water problems.
Pre – treatment for RO plants
Our calculations are based on 3 years running time. Life time of RO elements can be much longer by well designed Pre – treatment. Therefore BKG applies proper filtration systems with low speed, disinfection before conducting the water to the RO plant to avoid membrane fouling because of Scaling, Colloids, Suspended and dissolved organics and Biological matters.
Technical Features
Dosing Systems
For RO plants we equip our dosing systems with: low level switches, pre alarm for refilling dosing tank flow controller, if chemicals are not metered plants are stopping automatically. Dosing systems are used for metering of: Flocculation, Chlorine, Antiscaling, Destroying free Chlorine, Disinfection, pH Adjustment
Filtration
To protect the membranes from suspended matters we are offering Multi Media and Activated Carbon filters with low speed. The backwash of the systems is differential pressure controlled. The valves are single compressed air commanded diaphragm or butterfly valves with or without position indicator switches. 5 micron cartridge filters are made from reinforced PP, with high quality Puro melt cartridges with dual filtration rates for long cartridges life, 20 – 5 micron.
Racks with membrane vessels
Our racks are made from SS and colourless painting against highest corrosion protection.
Piping
Low pressure piping is PVC or PP and high pressure piping 316 L for brackish water and 1.4539 or duplex SS for seawater plants. Membrane vessels from high corrosion resistant GRP with PP liner for high UV protection of membranes. PP liner is highly chemicals resistant for chemical membrane cleaning.
Pumps for high pressure
- Smaller plants up to 100 m3/d with piston pumps
- Medium plants with Grundfos BMET with and without energy recovery systems
- Larger sizes with duplex SS with energy recovery systems
Membranes
Membranes are from well known manufactures like DOW and Torray up to 84 bar (1200 psi) working pressure for highest salt contents.
PLC control and instrumentation
For the controlling of brackish and sea water plants we are using PLC controller and we offer all necessary measurement equipment to run a plant save, such as: pH, conductivity, free chlorine, turbidity, flow, temperature and pressure control with transmitters with 4-20 mA signals. The switch board panels can be equipped as well with modems for transmitting of disturbing or requested maintenance signals, such as cartridge changing, refilling dosing tanks to Mobil or normal phone.
Measurement Instruments
pH, conductivity, free Chlorine, turbidity, Rhedox,
Permeate pump stations
Permeate pumps station can be single pump, duplex or multi pump station with or without frequency control.
Membrane permeate and cleaning stations
For smaller plants we offer a duplex system which can be used for permeate flushing of the complete system to protect plant against corrosion and scaling. Same system can be used as well for chemical cleaning of the membranes. For larger systems we are offering single membrane cleaning system with pump, temperature control, flow control, fine filter.
Process Operation
Operation of PLC controlled RO plants is easy, because the plants are self controlled. All eventual disturbing will be indicated on the OP (operation panel) or on the touch screen. The service operator should carefully follow the maintenance and service instruction for a longer membrane life. For this reason we offer qualified training to the service operators.
Fields of Application
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Drinking water for one or several houses, villages, hotels, restaurants, holyday villages irrigation water, industrial use etc.
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Process water for many applications such as boiler feed, pharmaceutical use, cosmetically, steel production.
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Water bottling, soft drink industry and many other uses.
