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It was in 1998 when I joined MACS Agharkar Research Institute in Pune, Maharashtra, India, for my doctoral research. I was fortunate to have got a very promising topic “Bioremediation of arsenic contaminated groundwater” to work upon under the able guidance of Dr. K.M. Paknikar, a renowned scientist in Nano-biotechnology.

ARSENIC the deadly slow poison had created havoc in nine districts of west Bengal then with more than 42 million people drinking arsenic contaminated groundwater, unknowingly! The urge was to find a solution applicable in field for removal of arsenic.


In April 2004, we came up with an integrated bio technological process with successful pilot scale and later scale up process for arsenic removal!! This was later applied by installing treatment plants in the affected areas of Chhattisgarh by DST, Govt of India.

Since then working on “Water” became my subject of interest and the journey continued through a water testing laboratory “Aquatech Solutions”; Multiple experimentation on grey water treatment and wastewater recycling…It was in 2008 when I received Indian Patent for the invention,” A process for recycling domestic wastewater”.

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This was the trigger to start my start up Cerulean Enviro Tech Pvt Ltd. – “Treating and Recycling water”. Today this is promising start up in the water treatment Industry!

Author- Dr. Sonali Mokashi

About Company

70 +
No. of Clients
9 +
Years Experience
350 +
Projects and services offered



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Dr. Sonali Mokashi


Ph.D. in Microbiology, with 17 years of rich experience in research on arsenic bioremediation from groundwater and water treatment and recycling at large. Established track record as innovator and scientist (holding Indian Patent 261355) with long standing association with esteemed institutions in various capacities and author of thought leadership articles in renowned publications.

Mr. Indrajit Rau


Director, Trinity Material Handling solutions (MHS) and Trinity Mahalasa Durga Sales and Services (TMDSS), Indrajit has extensive experience in business development and management.

TMDSS is the authorized dealers for Cummins India and TMHS for Kion India Pvt Ltd.

A High Quality Industrial Services