SED Partners Gradiant India to Deploy Zero Liquid Discharge System at Gujarat Solar Plant

Spray Engineering Devices (SED) has bagged an order from Gradiant India, the Indian arm of Boston-headquartered Gradiant, a  water and wastewater solution company. As India races to become a global leader in solar energy, the ‘green’ industry is facing a hidden challenge: massive water consumption. To tackle this, SED has officially teamed up with Gradiant India to install a high-tech water recovery system at a major new Solar PV manufacturing plant in Gujarat.

The project involves deploying a 340 KLD Zero Liquid Discharge (ZLD) system at Inlet TDS of 170000 ppm - a process that ensures not a single drop of industrial waste leaves the facility. By using SED’s patented Low-Temperature Evaporation (LTE) technology, the plant will be able to provide Volumetric recovery upto 94 percent and Mass Recovery upto 78 percent of its wastewater, turning it back into ultra-clean water for reuse. This move is particularly critical in water-stressed regions like Gujarat, where industrial groundwater use is under heavy scrutiny.

Vimarsh Verma, Director at SED said “Industrial water reuse is no longer just a ‘nice to have’- it is the backbone of modern manufacturing. Our technology allows factories to go ‘Zero Waste’ without skyrocketing their energy bills. By partnering with a global EPC leader like Gradiant, we are proving that Indian engineering can meet the world’s toughest environmental standards while keeping operational costs low.”

Unlike traditional systems that require massive amounts of external steam, SED’s solution recycles its own energy to run. For the solar facility, this means a significant reduction in carbon emissions and a reliable source of clean water that doesn’t depend on local municipal supplies or rainfall.

The Gujarat project will enable recovery of high-quality water (TDS less than 250 ppm), which will be fully reused across utilities and process applications under a Zero Liquid Discharge (ZLD) framework. The system is expected to significantly reduce freshwater consumption while supporting circular water management in a water-intensive manufacturing segment. SED will execute the project on a turnkey basis, encompassing design, engineering, supply, installation and commissioning, with an emphasis on timely delivery and operational efficiency.

This order comes at a time when the Indian government is tightening norms for ‘Red Category’ industries, making ZLD a mandatory requirement for new large-scale manufacturing units. By delivering this project end-to-end, SED is positioning itself as the go-to partner for the renewable energy supply chain, which is expected to grow by over 30 percent annually in India. 

India’s solar manufacturing sector is expanding rapidly under ‘Make in India’ and renewable energy targets, and this project directly supports those national goals. In water-stressed Gujarat, advanced ZLD systems not only ease pressure on local resources but also ensure compliance with Pollution Control Board guidelines. By combining Gradiant’s global expertise with SED’s indigenous technology, the partnership showcases international innovation meeting Indian engineering and sets a benchmark for other solar PV facilities nationwide to adopt sustainable manufacturing practices.