Zero liquid discharge is an environmental treatment method designed to eliminate all the excess liquid waste out of a system without affecting the performance of the entire system. The main focus of this is to minimize wastage of water, eliminate the harmful effects of runoff and generate clean, safe water for reuse by humans and animals, thus saving money. In short, iy reduces the amount of water used for irrigation, produces water free from lime, and makes the use of demineralized water a thing of the past. It also promotes reuse of water and its use as food and for other purposes. Furthermore, the environmental treatment of Zero Liquid Discharge also ensures that the water produced does not enter the aquatic system and is consumed by the fish in the water.
To begin with, a solute is put into the ZLD tank. The solute serves as a carrier of the sludge and other solid materials that are present in the water. The solid wastes are then conveyed through piping to be disposed of. After this, the treated water is discharged into an exit pipe that is connected to an intake manifold that collects the liquid sludge. The Zero Liquid Discharge treatment process is extremely economical since the solids do not have to be transported any further and are therefore easily disposed of. Furthermore, since the solids do not remain in the tank, the water in the tank is cleaner and free from lime.
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