Study on Selection Criteria of Unconventional Sanitary Sewer Networks in Small communities (Case Study: Bandar Taheri of Boushehr Province)

In selecting type of sanitary sewer network by a designer engineer، at first after surveying the region، the same of usages and results of the selected type of network shall be studied. Nowadays، gravity sanitary sewer network (conventional network) is designed and established extensively across the country in small communities which causes high costs. Therefore، investigation of usages of different unconventional sanitary networks including pressure sewer system (PSS)، vacuum sewer system (VSS)، small diameter gravity sewer system (SDGS) and simplified sewer system (SS)، is necessary due to lower costs. In the current research، the data are collected from books، consulting engineering companies’ reports، and national and international standards of sewer network systems and analyzed. And each type of sewer network and their usage are studied and discussed and then different options sanitary sewer networks are designed for Bandar Taheri of Boushehr Province as the case study using Arc Map، Arc GIS، Auto CAD، and Sewer CAD and then economically analyzed and estimated based on price lists. The results indicate the priority of option simplified sewer network which in accordance with specific circumstances of a region and criteria lowers administrative، operation and maintenance costs.