Evaporation/crystallization:
After the concentration step is complete, the next step is generating a solid, which is done through thermal processes or evaporation, where you evaporate all the water off, collect it, and reuse it.
Recycled water distribution/solid waste treatment
If the treated water is being reused in an industrial process, it’s typically pumped into a holding tank where it can be used based on the demands of the facility. The ZLD treatment system should have purified the water enough to be reused safely in your process.
Carbon Sand Filtration
The most common filters are filled with granular media such as sand/anthracite.
Filters are completely enclosed to use the line water pressure to push the influent through the media.
WTB offers a wide range of filters of different types and dimensions. Some of them are made entirely of Stainless Steel and can be operated either manually or automatically.
Membrane Bio-Reactor (MBR)
The term ‘membrane bioreactor’ (MBR) is generally used to define wastewater treatment processes where a perm-selective membrane eg; microfiltration or ultrafiltration is integrated with a biological process – a suspended growth bioreactor. Water Technology BD Ltd (WTB) is a renewed Company that working with Membrane Bio-Reactor (MBR).
MBRs differ from ‘polishing’ processes where the membrane is employed as a discrete tertiary treatment step with no return of the active biomass to the biological process.
Ultrafiltration (UF)
Water Technology BD Ltd (WTB) successfully working withUltrafiltration (UF) that is a separation process using membranes with pore sizes in the range of 0.1 to 0.001 micron. Typically, UF membranes will remove high molecular-weight substances, colloidal materials, and organic and inorganic polymeric molecules. Low molecular-weight organics and ions such as sodium, calcium, magnesium chloride, and sulfate are not removed by UF Membranes. Because only high-molecular weight species are removed, the osmotic pressure differential across the UF Membrane surface is negligible. Low applied pressures are therefore sufficient to achieve high flux rates from an Ultrafiltration membrane. Flux of a membrane is defined as the amount of permeate produced per unit area of membrane surface per unit time. Generally flux is expressed as gallons per square foot per day (GFD) or as cubic meters per square meters per day.