PURPOSE OF THE INNOVATION
As one of the best ZLD suppliers, it is a dire need to develop systems like Zero Liquid Discharge System due to rapid industrialization and urbanization that are tapping rising demands on freshwater supplies around the globe. It is considered as one of the world’s most significant problems, compromising the quality of the water, water security, economic expansion, and ecosystems. As a result of the increased demand for fresh water in industries, huge quantities of wastewater is being produced. When wastewater is dumped into bodies of water without even being properly treated, this can lead to serious contaminants, which negatively impact marine ecosystems and human health. Hence it was a need of the hour. This wastewater recovery system minimizes the incidence of contamination of water from untreated wastewater while simultaneously increasing water efficiency.
MAJOR ZLD SYSTEMS
Some major zero liquid discharge systems are discussed below:
ZLD Thermal Systems
In the ZLD system, pre-treatment of wastewater, management inside a brine crystallizer as well as brine concentrator, evaporation, and solids recovering are the main components. To reduce the maximum extent possible of water, wastewater undertakes pre-treatment operations like filtering, de-aeration, anti-scaling, and pH modification. Following that, a brine concentrator and a brine crystallizer are used to concentrate the water in zero discharge systems. Distillates are used again as safe water, whereas solids either are collected as economic residues or disposed of in evaporation ponds upon further treatment.
Thermal ZLD Systems with RO Integrated
RO, a pressure-compelled desalination technique, is integrated with thermal ZLD systems inside this system to reduce the amount of brine sludge reaching the brine crystallizer and concentrator, cutting energy usage. RO uses about 2 kW/m3 of product water with 50 percent recovering in saltwater desalination which is substantially lesser energy than brine crystallizers and concentrators. If RO-fed waste has a reduced salinity often up to 70,000 mg/L then this sort of system is cost beneficial, whereas the advent of freshly developed filters signals further potential to use RO in treating wastewater. Fore details visit: https://watermanaustralia.com/zero-liquid-discharge-system-zld/
