Development and Completion of Bojnourd Sewage Treatment Plant

Project Description:

Services:Studies of First and Second Stages and Implementation supervision

Plan duration :       First : 2006 End : 2031

Population :        First : 178000 End : 219200 people

Population density :    First of all,51.5 people per hectare, at the end 88.6 people per hectare 

Sewage production per day:  first 154 lit/day, end  180 lit/day
Covered area the network (feasibility studies): 2500 hec
Pipes in the collection network (feasibility studies) : 200-1000 mm
Length of the collecting network (development) : 390 km
Pipes used: double – wall corrugated polyethylene
Description of the development plan for the wastewater treatment plant
Process method: Activated sludge- extended aeration expandable to complete mix nitrate removal ability for 2 independent operating periods of 5 years (2006-2011), and 20 years (2011-2031)
Project capacity: The construction of meet the needs of the first 5 years of the project period (1383- 1383) and its enhancement to the complete mixing process up to 38500 m3/day capacity for the final development of the treatment plant by the end of the year plan
Modulation: The total capacity of the treatment plant is in the form of a modulus and with upgrade conditions for future design needs.
Design elements: pre-treatment facilities (Rubbing, Grazing), flow measurement, biological picker (selector),aeration and settling pools, reciprocating and surplus sludge pump pumping stations, mechanical sludge dewatering facilities, anaerobic digestion and disinfection facilities (perchlorin)
Start date of studies: 2001
Start date of Operation: 2011