Water - Spray Engineering Devices Ltd

What We Do

SED has transformed the wastewater challenge with our innovative Mechanical Vapour Recompression (MVR) based Low Temperature Evaporator (LTE®). A boiler-free technology that recovers 100% clean water, achieves zero-liquid discharge (ZLD), and delivers quick return on investment (ROI). Driving cost-optimization, efficiency, and circular economy for a cleaner, greener and sustainable future.

What Is Zero Liquid Discharge (ZLD)

Zero Liquid Discharge (ZLD) solution is an advanced wastewater treatment process designed to eliminate the discharge of liquid waste.

It maximizes clean water recovery for reuse and converts the remaining concentrate into dry solid. SED is equipped to handle even the most challenging effluents & leachate with higher efficiency.

About Our ZLD Process

Pre-Filtration Stage

In this stage, oil, grease, and suspended solids are effectively removed, followed by pH neutralization for further treatment.

Pre-Heating Stage

The condensate heat is recovered in the pre-heating of feed stream through a Plate Heat Exchanger (PHE).

Evaporation Stage

The pre-heated wastewater is fed into the MVR Based Low-Temperature Evaporator (LTE®), to achieve maximum clean water recovery through efficient evaporation.

Concentration Stage

The concentrate from the LTE® is transferred to Forced Circulation Evaporator (FCE) for maximum concentration. This process reduces further dryer load and size that ultimately minimizes operating cost.

Drying Stage

In the final stage, the slurry is fed into the dryer, where all remaining moisture is evaporated, resulting in a dry powder as the final output.

Benefits of MVR based LTE®

A sustainable, energy-efficient, and cost-effective alternative.

Wide Range of MOCs
Comprehensive range of material of construction (MOCs) from SS304, SS316, Super Duplex, Titanium etc.

Higher Turndown Ratio
Automated system with variable frequency drives (VFDs) ensuring no shutdowns or efficiency losses even at low-capacity operation.

75% Lower Operating Cost
Delivers up to one-fourth the OPEX compared to alternative solutions.

Electricity Driven
Fast, responsive operation driven by electricity results in minimal downtime and dramatically reduced carbon footprint, especially with renewable power.

Our Equipment for Water Refineries

MVR Based LTE®

SED’s patented MVR-based Low-Temperature Evaporator uses vacuum technology to boil fluids below normal temperatures. It operates without continuous external steam, recovers clean water from wastewater, reduces volume significantly, and provides a sustainable, cost-effective solution for plant reuse.

Forced Circulation Evaporator

The Forced Circulation Evaporator (FCE) is ideal for handling liquids that tend to scale or crystallize, especially during final evaporation stages. It ensures continuous flow,prevents fouling, and maintains heat transfer efficiency for consistent and reliable processing performance.

Paddle Dryer

SED’s paddle dryer uses indirect conduction heating, ideal for drying thermally stable materials like pastes, powders, and granules. It ensures uniform drying with efficient heat transfer and minimal energy loss.

Stripper Column

SED’s advanced stripper columns operate efficiently at low delta pressure, supporting solvent recovery, pollutant removal, and ZLD, offering high performance in resource recovery and environmental compliance across industrial applications.

Leading Companies Rely on SED

Awards &Recognition

AWARDS

National Award for Excellence in Water Management 2019

September 19, 2019, Spray Engineering Devices won the 2019 National Award for Excellence in Water Management for its Low Temperature Evaporation Technology.