Syed Azizul Haq, PEng served as Additional Chief Engineer of Public Works Department in Bangladesh. He is now a registered professional engineer in the field of environmental engineering for more than 40 years. Concomitantly, an author published two technical books of international repute, and a patent holder of Mechanical seal trap. He is an Editorial board member for JournalsPub, India and a Training facilitator: Advanced Plumbing, Sewage Treatment Plant, Rainwater harvesting, Fire safety in Buildings.

ORCID iD: 0000-0001-6437-4026