Seyyed Alireza Ebrahimzadeh Zonouzian
PhD in Applied Chemistry
Specialist in Water Disinfection & Treatment
Specialist in Chlorination Systems, Chlorine Safety & Security

My professional path has been shaped by over two decades in the drinking-water sector and by my academic background in applied chemistry. This experience spans water disinfection and chlorination, treatment processes, and related technical and operational issues. Years of work in chlorine safety, security, risk management, and emergency preparedness have also become an important part of my professional focus.
My work in chlorination includes the design, evaluation, optimization, and troubleshooting of chlorination systems, as well as their safety and security aspects. In water treatment, I work on process evaluation, the selection and application of treatment chemicals, plant performance assessment, the investigation and analysis of complex technical and operational issues, and technical evaluation of complex water, wastewater, and chemical effluent treatment projects.
Professional Focus
Chlorination Systems
Design, evaluation, optimization, and troubleshooting of chlorine gas, sodium hypochlorite, and calcium hypochlorite dosing systems, as well as on-site generation (OSG) systems for sodium hypochlorite, including the investigation and resolution of complex technical and operational problems.
Water Treatment
Evaluation of treatment processes and plant performance, selection and application of treatment chemicals, and investigation of operational issues in water treatment plants.
Chlorine Safety, Security & Emergency Response
Risk assessment, design of preventive and protective measures, development of security measures and considerations, emergency planning, and response to chlorine-related incidents.
Specialized Technical Training
Specialized technical training and theoretical and practical workshops on chlorine and chlorination have been a continuous part of my professional work over the years.
Selected Highlights
My professional work includes contributions to national standards and technical guidelines, authorship of books and technical publications, and presentations at major professional events.
National Standards & Technical Guidelines
Contribution to national standards and technical documents, including Publication No. 673: Guidelines for the Construction of Chlorination Systems in Water and Wastewater Treatment Plants.
Books & Technical Publications
Authorship and contribution to specialized books and technical publications, including Operation of Chlorination Systems and Response to Related Incidents.
Professional Presentations
Presentation of technical work at professional events, including the IWA World Water Congress.
chlorine.ir
Founder, Owner, and Manager of chlorine.ir, an independent specialized platform focused on chlorine, its applications, and related technical and safety topics.
Why zonouzian.com?
I created zonouzian.com as an independent professional space to bring together my technical work, publications, experience, ideas, and future professional activities.
It is separate from my formal organizational responsibilities.
For Collaboration
If you are working on a project or facing a technical issue in chlorination, water treatment, or chlorine safety and security, or if you need technical evaluation or specialized training, I would be glad to discuss whether my experience could be useful.
A collaboration may begin with an independent review of a project before implementation and, where needed, extend to technical evaluation, investigation of complex issues in operating facilities, and support in developing an appropriate solution.
I am also open to collaboration on standards, technical guidelines, and related professional documents.
International collaboration may include remote technical review, design, evaluation, and project work in the areas outlined above under Professional Focus.