This invention is a process and equipment that can be applied to general water treatment and purification. It is especially useful for treating high salinity wastewater with high total organic carbon (TOC). The process tracks three types of unit operation (electrocoagulation, membrane filtration and membrane distillation). The membrane filtration process is applied by using submerged ceramic membranes. The membrane distillation (MD) cell contains three layers of separation barriers (a hydrophilic membrane, a supporting nonwoven sheet, and a hydrophobic membrane). This invention uses a unique membrane cell, which can treat extremely high TDS brine streams in the presence of polar and non-polar organic compounds, surfactants and other low surface energy compounds. The membrane is easy to regenerate by chemical and physical cleaning. Problem Addressed by Claimed Invention Water consumption has increased tremendously, and there is a severe shortage of water throughout the world. Reliable and efficient methods of water purification are in high demand since wastewater is still a great resource to sustain a clean water supply. In this respect, wastewater needs to be purified and reused, which has become a widely accepted approach to sustain a clean water supply and support economic development. Membrane distillation (MD) is an attractive membrane technology that can reduce the worldwide water-energy stress in a sustainable way. MD is promising due to enhanced water recovery and decreased concentrate requiring disposal as opposed to other separation techniques such as reverse osmosis (RO), electrodialysis (ED), crystallization, and bioreactors. MD also provides a unique market opportunity and driver for the commercialization of the technology as a process that can potentially achieve zero liquid discharge.
Name: Technology Ventures