Scarcity of water has become a matter of concern lately. Though our planet has an abundance of saltwater, it can be pretty useless most of the time. Humankind needs freshwater to sustain. And, the increase in population has driven freshwater reserves to an all-time low.
That is why the preservation and reuse of water have been a necessary thing for us for quite some time. To meet the stringent water conservation laws, plants are installing Zero Liquid Discharge technology. This way, they not only save a lot of water by reusing the existing water over and over but also they recover lots of valuable products from wastewater.
Purpose:
The ZLD process is not only beneficial to the industrial sector by reducing water needs but also beneficial to the environment of our planet. It helps us to preserve fresh water for our future generation. ZLD plants employ a state-of-the-art wastewater management technology that purifies and recycles almost all the droplets of wastewater produced.
The main purposes of deploying ZLD technology in an industrial space is:
- To meet the strict water discharge regulations
- To collect valuable materials from wastewater
- To minimize the freshwater requirement
Methodology
The ZLD plants convert large quantities of liquid wastes to reusable distilled water. In this process, these plants also produce solid salts which are later used in the chemical industry or for landfilling purposes.
Zero Liquid Discharge technology includes treatment and evaporation of industry effluents until the dissolved particles precipitate in the form of crystal. These crystals then dewatered by applying heat and water vapours are collected by condensing the vapour.
- Strong and sturdy design
- Low maintenance cost
- Fast installation process
- Integrates perfectly with the existing water treatment system without much effort
- Compact design for zero water loss
- Factory tested equipment
- Recovers valuable materials from wastewater
- Reduces wastewater disposal costs
- Meets environment safety regulations
- The robust and reliable design which lasts for a couple of decades without heavy repair
- Produces a high volume of fresh water for both drinking and industrial use
- Minimalistics daily maintenance procedures
- Reduces freshwater extraction by upto 90%
ZLD has a wide range of applications in many different industries. Here is a list of places where ZLD is compulsory. Apart from these below-mentioned industries, other manufacturing units have also started using ZLD in their plants.
- Edible oil refinery
- Paper Industry
- Distilleries
- Dye producing intermediaries
- Electroplating industry
- Tannery industry
- Pharmaceuticals industry
- Chemical industry
- Iron & Steel industries
- Food and beverage industries