The One-step ZLD system uses the patented mechanical vapor recompression (MVR) system. The MVR system is the center of numerous water treatment solutions involving evaporative concentration, crystallization and zero liquid discharge (ZLD) efforts. This system is used in applications including solid waste, chemical and manufacturing industries and high-content desalinization projects including maximum water recovery associated with oil and gas production.
Description :
The Vacom One-step ZLD system operates as a concentrator and/or a crystallizer depending on the specific heat exchanger and blower designs.
Heavy industrial processes can generate oily wastewaters containing a variety of other toxic contaminants such as heavy metals, surfactants and ammines. The system can concentrate the oily contaminants into a high BTU waste fuel recovering clean water.
Because the Vacom One-step ZLD can be used in a variety of heavy industrial processes utilizing wastewaters of varying chemical consistencies and levels of corrosiveness, the materials with which to design and manufacture each system must be chosen carefully.
Material selection :
Material selection is critical. The system has operated under chloride concentrations exceeding 300,000 ppm while at pH levels ranging from 1 to 14. Additionally, the system can be used to concentrate wastewater without any pretreatment. This means there are often high levels of abrasive suspended solids. The system handles corrosion, abrasion and pitting by ensuring that the right metals have been selected for the application.