Arya Ayoubi - Graduated Student, Civil-Structural Engineering, Anzali Branch, Islamic Azad University, Anzali, Iran
Hamidreza Ansari Joveini - University Lecturer, Department of Civil Engineering, Rahbord Shomal University, Rasht, Iran

The paper aims to provide sanitary conditions, keep the environment clean, recovery wastewater and increase the quality of the water treatment structure using the standardization of components used in the production and assembly. The scope of this paper is to determine the required performance for the wastewater treatment using anaerobic bacteria in removing the sewage sludge. Wastewater treatment or refinement is usually divided into three steps.First step: The preliminary treatment is a physical treatment which includes waste absorption, grain absorption, sedimentation of suspended solids and finally disposal of sludge.Second step: Secondary treatment is a biological treatment which is done using different anaerobic bacteria existing in the wastewater and providing their growth and reproduction.Third step: Advanced or final treatment which includes the clarification of wastewater using one of the methods of denitrification, activated carbon, desalination, ion exchange, etc.If components of a wastewater treatment system work correctly, the wastewater pollution can be reduced to 90% in the second step. The reason is that today in wastewater treatment plants, the third step of treatment is not used, on the one hand and advanced treatment facilities (third step of treatment) are very costly, on the other hand. This paper provides fundamental information about prefabricated concrete water treatment systems with anaerobic technology and aims to determine and investigate other existing systems.

Environment, wastewater treatment system, anaerobic, standard, prefabricated concrete, physical treatment, biological treatment and clarification.