growing the water consuming and shortage of available fresh water resources, make “effluent reuse” an unavoidable issue in industry for supplying a part of needs for required water. on the other hand, increment in the production of paper products from wood and recycling their consumed products which release pollutants to the environment has increased the environmental concerns. thus, in present...

To investigate if decentralized wastewater treatment systems impact on the environment performance can be improved, a Field Bio-tower Tank Septic system was designed, installed an existing 1,500-gal (5678 l) system. The started up during 14-day start-up phase, followed by 130-day test phase. operated at average hydraulic retention time of 16.7 days based 90 gal (204.4 daily influent flow.
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One of the industrial areas in the south of Iran is Bandar Imam Petrochemical Economic Zone which has a lot of petrochemical complex, Farabi Petrochemical complex is one of those places. Coagulation/flocculation could be a typical methodology in water and wastewater treatment that a number of chemicals are added to assist the coagulation/flocculation and causes to the sedimentation. In this pap...

BACKGROUND Using treated wastewater in agriculture irrigation could be a realistic solution for the shortage of fresh water in Iran, however, it is associated with environmental and health threats; therefore, effluent quality assessment is quite necessary before use. The present study aimed to evaluate the physicochemical and microbial quality of Shiraz wastewater treatment plant effluent for b...

Moving bed biofilm reactor (MBBR) is a process in which attached growth is utilized for wastewater treatment. This process does not require sludge recycling or backwash. Activated sludge processes can be promoted to an MBBR by adding media to an aeration tank. Rapid sand filter is a physical method for the removal of total suspended solids (TSS) in advanced wastewater treatment. The purpose of ...