Sede Lenjan Wastewater Treatment Plant



Isfahan Province Water and Wastewater organization as the employer notified this project to our company on 10/07/2012. the contract period is 30 months and the completion date will be 10/01/2015. The site of this project is in Sedelenjan one of Isfahan Province cites. The capacity of this wastewater treatment is 4800 m3/day .

The services which are done by abangan Sanat co. are Doing  all the design and engineering including: basic design, detail design and Preparation executive drawing, local and foreign procurement, transportation and shipment, , Construction, installation and commissioning of all equipment, training, Operation , preparation 2 years commissioning and operation spare parts .

extended aeration method is used in this Sanitary wastewater treatment. Raw sewage after crossing the screen enters to grit removal unit and after that by submersible pumps goes to anoxic tank and then is directed to Aeration tanks .aeration is done by blowers and disk diffusers in Aeration tanks. The part of mixed ligour is returned to anoxic tank for denitrification reactions and it is mixed with raw sewage by submersible mixers. Effluent of the aeration tanks is driven to circular sedimentation tanks and settled solids are directed to center of sedimentation tank by sludge scraper. Clarified wastewater is by a liquid chlorination system.  Excess sludge produced at the treatment plant is dewatered by a belt filter press and then is mixed with lime to achieve Class B sludge .

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