Hello Durga
Below are mentioned a few names of Private polytechnic for Environmental Engineering
Digambar Jain polytechnic ,Baraut , fees 65.52 k
Maa Bhuddha National institute of engineering and technology , Dhuripur, Uttar pradesh
Mahatma Gandhi Labour Institute,  Ahmedabad , fees 21 k
Mansarovar Global university,  Sehore , Bhopal, Madhya pradesh
MET's school of engineering,  Thrissur,  kerala
RB Gautam polytechnic, Hathras  uttar pradesh
Shanti polytechnic meerut
Sri KJ polytechnic Bharuch
Singhania university,  Rajasthan
SNIT, Adoor ,kerala