Method
Method Principle
Brackish Water Desalination with the application of reverse osmosis process is by now a tested and recognized technology that can provide high quality potable water at an economically feasible and reliable way.
The method is based on the flow of highly pressurized brackish water across membranes that separate the intake in two fractions. The permeate water, which is water that is allowed to pass through the membrane (50 – 85% of the intake water), and the concentrate that is retained on the pressurized side of the membrane, (15 – 50% of the intake water). The concentrate contains 99.7% of the permeate water salts. The permeate water has a significantly low content of salts making it suitable for drinking, irrigation, and most industrial applications.
The advanced brackish water desalination systems constitute a tested solution for resolving water quality and shortage issues in communities, industry, hotels and resorts.
Technology
Advanced Desalination Systems
The term “advanced” systems refers to the integration of a series of traits that attribute to the system a reliable and economical operation with the use of modern equipment and technologies.
These traits include the following:
Special piping network constructed entirely of stainless steel seawater type 904L
- Design includes 2 high pressure pumps
- Smart electronic control with the use of a PLC and digital touch screen
- Remote control and monitoring
- Provision for integration of energy recovery system (large capacity units) for minimization of energy consumption.
- Minimal use of dispensable chemicals.
- Integrated automatic chemical cleaning system (Clean-In-Place CIP system)
- Frequency inverters for the optimum and easy adjustment to the variations of the intake water salinity (salt content).
- Mechanical equipment by world-wide recognized manufacturers (Grundfos, Danfoss Demnark, Siemens Buerkert, TecSis Germany, Dow Filmtec U.S.A., Hydranautics U.S.A., Pentair Water, Praher Austria).
SYCHEM is one of the few international, and the single company in Greece, that after years of experience in energy recovery systems combined with seawater desalination systems, provides the opportunity to integrate these systems on large capacity brackish water desalination systems.
Furthermore, SYCHEM’s SYRO BW units incorporate superior ergonomics in 316L stainless steel design with special corrosion protection coating and adjustable base or fully installed inside steel containers.
Installation
Installation and Design
The successful installation of a desalination system requires an experienced engineering design process that is an essential prerequisite for the uninterrupted and smooth operation of the system.
Indicative critical design parameters are presented below:
- Method and materials used for seawater suction.
- Tanks and water treatment prior to the desalination system inlet and after production (resolution of biofouling control issues, corrosion control, etc).
- Piping network arrangement and water management.
Technical Data
Typical Technical Characteristics
Brackish water desalination systems can operate with total dissolved solids (TDS) ranging from 500 to 15.000mg/L and can produce potable water with a maximum TDS concentration of 500mg/L.
By applying innovative design concepts, SYCHEM provides desalination systems for high salinity brackish water by incorporating pumps made out of titanium (Grundfos CRT), series SYRO BW H.
All SYRO BW units (>2m3/h) incorporate the following:
- Touch screen that allows monitoring and easy control of the system operation. The same screen provides a programming capability of the system regarding all the critical operating parameters (pressure, flow, etc).
- 316L Stainless steel frame with special corrosion protection coating and adjustable base.
- High pressure durable piping networks consisting entirely of stainless steel seawater type 904L/duplex.
- Capability of immediate disassembly of the high pressure network without the use of special tools for easy maintenance operations.
- DOW Membranes – Filmtech / Hydranautics U.S.A.
- Special type membrane pressure vessels for easy maintenance and membrane replacement.
- Integrated chemical cleaning system with automated control capabilities from the PLC.
- Electrical panel with PLC and digital touch screen panel, in addition to capability for supervision and control of a series of parameters via graphic environment.
- High quality specification and capabilities digital measuring instruments, fully connected to the PLC and with displays on the touch screen.
- Full automation (alarm for all critical parameters, connection to tank level switches, control of auxiliary pumps and post-treatment systems, etc).
- Operation & Maintenance manual including coding system for all equipment on valves and appurtenances with permanent marking.
Technical Support
Technical Support
In addition to sound design and construction, the proper and smooth operation of a desalination system depends on technical support, as well as monitoring. SYCHEM owns a well equipped laboratory in which the quality of produced water is validated with a series of analyses, in addition to a well-organized electronic system for monitoring all the installed seawater desalination units.
The above mentioned services, including routine and emergency maintenance operations, may be included within the contractual responsibilities for monitoring and maintenance, in order to ensure the quality and quantity of the water production.
SYCHEM owns and operates a manufacturing facility for the assembly and maintenance of desalination units, located at the industrial park in Heraklion, Crete. SYCHEM also permanently employs trained and specialized technicians in Athens as well as in Crete. By providing these services, SYCHEM can ensure the immediate intervention and service for any potential failure, as well as the resources for continuous and organized staff training at each installation during the operation of the system.
Warranty / Assurance
Warranty
SYCHEM systems’ high quality of design and construction, along with the expertise relating to each application allows for the provision of comprehensive warranties, and specifically:
- 2-year warranty on all the mechanical equipment with immediate and on-site replacement of potential defective parts.
- 3-year warranty on the membranes
- 5-year warranty on the piping network and the electrical equipment
