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Spray Engineering Devices Limited bags National Energy Efficiency Innovation Award-2021.

Chandigarh 21 Dec 2021The Bureau of Energy Efficiency, Ministry of Power, Government of India recognized Vivek Verma, Managing Director, Spray Engineering Devices Limited (SED) Mohali, Punjab with first prize in Industries Category for its innovation entitled “Low Temperature Evaporation Technology” for National Energy Efficiency Innovation Award-2021 held as part of Azadi ka Amrit Mahotsav celebrations.

Spray Engineering Devices Limited (SED), Mohali, Punjab is a multidisciplinary engineering company with a mission “Dedicated for Sustainable Environment Development to Unlock Perpetual Food and Energy Resources”. To accomplish this, the company is driving the change forward by adopting novel thermal energy recycling technology to deliver clean and green solutions. One of its key   innovations is patented Low Temperature Evaporator (LTE®) which has brought an evolutionary change in biofuel, water recycling, and agro-processing sectors. Company aims to demonstrate our capabilities by utilizing non-food biomass of agriculture as a renewable source of green chemicals and polymers.The prestigious award ceremony was held on the occasion of “National Energy Conservation Day” to honor organizations and researchers adding substantially to the nation’s low carbon footprint strategy at Vigyan Bhawan, New Delhi wherein Chief Guest Shri R.K. Singh, Hon’ble Union Minister for Power and New & Renewable Energy along with Shri Krishan Pal, Hon’ble Union Minister of state for Power and Heavy Industries felicitated the award winners. The event also witnessed the presence of other high level dignitaries.

“Low Temperature Evaporation Technology” is based on Mechanical Vapour Compression system under the vacuum for the recovery upto 99% of high-quality clean water (lowest TDS, COD and BOD) from the industrial effluents/ wastewater/ sewerage etc. The above technology is without the use of any external heat source like Boiler, Turbines or heat rejection source like condensers, cooling tower as used in conventional systems. Nearly 100 projects are running globally, and this technology has wide applications in industrial, commercial and domestic sectors, thus achieving not only Zero Liquid Discharge (ZLD) but also making it Zero Liquid Intake (ZLI) during various processes.

SED has also been recognised by Technology Management Directorates- Industry Interface, Council of Scientific and Industrial Research (CSIR), Ministry of Science and Technology, Government of India for its innovation entitled “Low Temperature Evaporation Technology” with CSIR Diamond Jubilee Technology Award- 2020 along with a cash prize of Rs. 10 Lakh. This award was announced at the 80th CSIR Foundation Day Celebration at New Delhi where Shri M. Venkaiah Naidu, Vice President of India was the Guest of Honor.

Commenting on the occasion, Vivek Verma , MD said that SED strongly believes in making environment sustainable and hence its Low Temperature Evaporation Technology is based on Mechanical Vapour Compression system under vacuum for the recovery of up to 99% of high-quality clean water from any type of wastewater/ Industrial Effluents/ leachate etc.

Extraordinary Features of the Technological Innovation includes

·        No Heat generator  and Rejector

·        No Reverse Osmosis

·        Water Recovery upto 99%

·        Lowest Water Recovery Cost

·        Lowest Carbon Footprint

·        Most effective water Management Solution

·        Minimized Sludge Handling

·        Direct Wastewater to clean water in single step

·        No Chemical Treatment in Process

·        Closed loop Robust & Automatic


The low temperature evaporation comprises plate type heat exchanger and mechanical vapour compression system. The evaporative liquids or industrial effluents or wastewater is fed in single or multiple effect heat exchanger arranged in horizontal or vertical manner and evaporated vapours are compressed with mechanical vapour compression system under vacuum. Initially the plate heat exchanger was heated by a very small amount of electric energy or available steam to start up the system. The feed is maintained the certain level in the distribution assembly and is sprayed on the plate packs or plate heat exchanger arranged in horizontal or vertical manner with the help of recirculation pump and then evaporation phenomena take place due to temperature difference in the feed and inlet compressed vapours which is coming from the compression suction and delivery arrangement after re-compression by booster or blower. The concentrated liquid is collected at the bottom of the low temperature evaporator and re circulated and partially transferred to the next effect for further concentration as per process requirements. After the desired concentration, concentrate is collected at the bottom of the evaporator and transferred to the rejection tank to paddle vacuum dryer for solidification per above schematic process flow diagram. The compressed vapours or non-condensate gas or both have been used as a heating media for evaporation and concentration in the direct contact heater. The generated water vapours are passed through the demister pad assembly for separation of vapours and liquids. After condensation of water vapours, crystal clear clean water is collected at the bottom of each plate pack of low temperature evaporator taken out through the condensate outlet into the condensate tank by condensate pump. 

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