Spray Engineering Devices Limited (SED) has secured a significant order from Gradiant India, the local subsidiary of Boston-based Gradiant, to deploy an advanced water recovery system at a large solar PV manufacturing facility in Gujarat.
The partnership comes at a time when India's rapidly expanding solar manufacturing sector is facing an often-overlooked challenge of high water consumption. The project aims to address this by integrating sustainable water management into one of the country's key renewable energy hubs.
As part of the order, SED will install a 340 KLD Zero Liquid Discharge (ZLD) system, designed to ensure that no industrial wastewater is discharged from the plant. The system will operate at an inlet Total Dissolved Solids (TDS) level of 170,000 ppm and is expected to deliver up to 94% volumetric recovery and 78% mass recovery, enabling extensive reuse of treated water.
At the core of the solution is SED's proprietary Low-Temperature Evaporation (LTE®) technology, which enables efficient water recovery while minimising energy consumption. Unlike conventional systems that rely heavily on external steam, the LTE-based system recycles its own energy, reducing both operational costs and carbon emissions.
The recovered water treated to TDS levels below 250 ppm will be reused across utilities and process applications within the facility. This is particularly relevant for Gujarat, a region where industrial water usage is under increasing regulatory and environmental scrutiny.
Commenting on the development, Vimarsh Verma, Director at SED, said that industrial water reuse has become a critical requirement rather than an optional sustainability measure. He noted that the company's technology enables manufacturing units to achieve zero liquid discharge without significantly increasing energy costs, while also meeting stringent environmental standards.
SED will execute the project on a turnkey basis, covering design, engineering, supply, installation, and commissioning, with a focus on timely delivery and operational efficiency.
The order also aligns with tightening environmental regulations in India, where ‘Red Category' industries are increasingly being mandated to adopt ZLD systems for new large-scale projects. Against this backdrop, the partnership positions SED as a key player in enabling sustainable infrastructure for the renewable energy supply chain.
With India's solar manufacturing sector expected to grow at over 30% annually under national initiatives such as "Make in India," the project highlights the growing importance of integrating resource efficiency into industrial expansion.
By combining Gradiant's global expertise with SED's indigenous technology, the initiative sets a precedent for sustainable manufacturing practices in solar PV production, particularly in water-stressed regions.
