Freshwater scarcity is one of the most pressing issues facing the world today, posing a serious danger to ecosystem, health, water security, and economic growth. Providing enough and clean drinking water is hampered further by climate change, economic pressures, and industrialization. Both the public and industrial sectors use a lot of freshwater, while generating a lot of wastewater. Severe pollution brought on by wastewater discharge, into the aquatic environment, has a negative effect on aquatic ecosystems and human health. As a result, with growing advancements, the technologies used in Zero Liquid Discharge Plants have alsoevolved.
Causes and effects caused by wastewaters
Wastewater is produced in vast quantities by industries like textile, chemical, tanneries, power, oil & gas, and pharmaceutical. These industries produce more harmful chemicals, solid waste, and organic waste in their effluent, all of which have a negative impact on the environment.
One of India's largest rivers, the Ganga, is severely polluted as a result of the various factories that are located along its banks. The wastewater produced by these businesses, is directly discharged into the river and its tributaries. It is the only source of drinking water for the villages on its banks,which do not have a link to a potable water supply at their residence. People in these settlements are compelled to consume water, which contains harmful chemicals and substances.
What technologies are used in Zero Liquid Discharge Plants?
Providing complete solutions for water treatment, industrial wastewater treatment, sewage treatment, desalination, and Zero Liquid Discharge (ZLD) solutions at affordable prices, Netsol Water Solutions is a leading global provider of water management services. We have knowledge of designing low-cost treatments for difficult-to-treat wastewater. Our area of expertise is integrating our teams for the project's smooth implementation. We strive to implement innovative technology, lessen our environmental impact, conserve energy, and provide a cutting-edge water treatment facility.
In this regards, we provide various technologies for ZLD. Some of them include:
· Mechanical Vapour Recompression Evaporators or MVRE
A low-pressure vapour is compressed by an energy recovery evaporator, called MVRE, which then produces a small amount of high-pressure, high-temperature vapour. In MVRE, the influent is heated with steam, and the resulting vapour is compressed before being transferred to a heat exchanger, where it is condensed to produce pure water. It is typically used before MEE, to lower the influent's TDS concentration.
It is possible to use this method with polymeric film technology. In order to remove highly volatile chemicals, not removed during the preceding operation, RO effluent is fed into MVRE. About 80% of the water used in this process is recovered.
· Multi-effect Evaporators or MEEs
Sequences of vessels are utilized in MEEs. As the boiling temperature of the water drops with the pressure rise, water is cooked in these vessels, while being held at progressively decreasing pressures. Only the first vessel (at the maximum pressure) necessitates an external heat source, because the vapour that was boiled off in one vessel can be utilized to heat the next. The type of effluent put into the MEE has extremely high TDS. Around 95% of the water used in this procedure is recovered.
A cutting-edge method of water treatment, called zero liquid discharge, cleans and recycles the wastewater at the end of the industrial process, leaving no liquid waste behind. Zero liquid discharge is performed at Netsol Water, using the most energy-efficient methodology possible, which saves about 80% energy.
Services for treating wastewater
With more than 10 years of experience, Netsol Water is a world-renowned provider of wastewater treatment services. Our company uses a variety of techniques, to treat industrial and commercial wastewater. By using the most up-to-date tools & technology and qualified engineers, we preserve customer satisfaction.