Hazard assessment of Zargandeh waste water treatment plant using PHA & JSA

For the purpose of assessing Zargandeh waste water treatment risks، preliminary risk assessment and evaluation of safety were conducted. For this purpose air pollution and visual impact were assessed and scored after identifying the activities and various water treatment processes، equipment، and staff positions and the amount of pollution due to wastewater treatment plant. Values were measured in the treatment facilities ‘drainage (Summer 2011) conforms to the standard sat by Iran’s Environmental Protection Ministry. Results of this investigation (using PHA & JSA methods) showed those 58 environmental risks for three dangerous occupations and 30 precarious situations in the plant dividing into 16 risks with an acceptable level without appeal، 10 the risk with an acceptable level with the revised management and 4 unacceptable level of risk 28 with undesirable level of risk. In addition، 30 dangerous situations separated to unacceptable and poor category that the six cases applying for unacceptable situation and 24 cases applying for poor (undesirable) situation. Hence this study، public health and safety training for all personnel، monitoring the behavior of individual employees، especially during maintenance، establishing appropriate procedures for waste collection and disposal of various waste water treatment process، developing safety standards and guidelines، and their implementation in all areas seem to be essential to protect both staff and environment.