IDE’s chemical-free desalination technology is designed to produce clean water from standard seawater without the use of any chemicals. This technology is based on two concepts: Contact Media Coagulation and Direct Osmosis Cleaning.
Contact Media Coagulation
Standard RO desalination uses chlorine to eliminate bacteria before filtration. In addition to the chemicals introduced at the start of the process, additional chemicals are required to neutralize the chlorine. Furthermore, this process does not eliminate all bacteria.
Contact Media Coagulation allows the bacteria to grow and gather together with other suspended matter into flocs that are then filtered out of the water by multi-media filtration. IDE has developed unique technology that harnesses this process so that it’s consistent and thorough, eliminating all bacteria present.
DOC – Direct Osmosis Cleaning
is a patented, automated process designed to keep the membranes constantly clean. By equalizing the external pressures for a short period, the DOC allows the osmosis process to flush the membranes with permeate water, thus eliminating the need for chemicals in the RO process. The results are reduced energy consumption and maintenance requirements, as well as cost savings.
Utilizing Available Coldness from Liquefied Natural Gas LNG Regasification Process for Seawater Desalination
In this article a case study was considered, in which an LNG regasification plant can supply 1750 ton/hr of water-glycol solution at -15°C to be utilized for seawater desalination. The main challenge in this evaluation is being able to provide a desalination solution able to compete with the commonly used RO plants.
Recovery of Osmotic Power in SWRO Plants
The paper analyzes the ways that different researchers have selected to overcome the phenomenon of CP, and presents an overview of the existing RO membranes from the point of view of their suitability for use in Forward Osmosis power generation.
Design Challenges and Operational Experience of a Mega MED Seawater Desalination Plant in Tianjin
This article is a continuation of the article "Sliding Pressure Turbine Integrated with Seawater Desalination Facility (MED)" presented at the IDA 2011 World Congress.
Three Pressure Retarded Osmosis PRO Processes
Pressure retarded osmosis (PRO) can be implemented on a number of water types, using different technologies and achieving various power outcomes. This paper presents the three most practical options.
Implementation of Build Operate Transfer Schemes: Obstacles and Solutions
This paper focuses on these cases, addressing the main causes of the failure of suggested/initiated BOT scheme offerings and what prevented their successful implementation. The paper analyses the main constraints and obstacles characterizing these setbacks, and presents different solutions and alternatives to by-pass and/or overcome these obstacles that, if adopted, could enhance the possibilities of successful implementation of the projects.
Steam Driven Large Multi Effect MVC (SD MVC) Desalination Process for Lower Energy Consumption and Desalination Costs
This paper will also describe the thermodynamic advantages, the specific investment and desalination costs comparison, and the resulting desalination cost reduction potential of the steam-driven multi effect MVC process.