The mechanical-biological waste treatment plants (MBTP), which include the municipal biogas plants, have an important role in sustainable urban development. Some are equipped with a sewage pre-treatment plant, is then directed to sewerage system and plant. Others, on other hand, only non-drainage tank. parameters of technological (TS) or processing technology could reduce contamination rates. I...

Iron is an important element for modern sewage treatment, inter alia to remove phosphorus from sewage. However, phosphorus recovery from iron phosphorus containing sewage sludge, without incineration, is not yet economical. We believe, increasing the knowledge about iron-phosphorus speciation in sewage sludge can help to identify new routes for phosphorus recovery. Surplus and digested sludge o...

because of the establishment of a sewage treatment plant in the city of isfahan in recent years, a study was undertaken to investigate the effect of this system in reducing the high prevalence of helminthiases. samples obtained from various parts of the plant and at different stages of processing were examined and it was found that the eggs of ascaris, trichostrongylus spp. and trichuris are fo...

sewage stabilization pond is recommended as one of the economical methods for sewage treatment particularly in dry areas of the world and those places which are in shortage of water and income deficit, this method can be used for treatment of sewage in rural areas, small towns and even large cities. sewage stabilization pond system does not require technical equipment and specialists, and efflu...

The fate and behavior of estrogenic substances in various biological wastewater treatment processes and several advanced sewage treatment processes were examined. The removal of 17beta-estradiol (E2), estrone (E1) and estriol (E3) was investigated by using a pilot-scale activated sludge plant supplied with domestic sewage. Several sewage treatment plants adopting the activated sludge process we...

background sewage sludge (biosolids) is a byproduct of wastewater treatment that accumulates in large quantities. effective stabilization and disinfection of sewage sludge prior to land application are necessary to not only protect human health, but also to induce the public its benefits and safety. currently, many wastewater treatment plants in iran dispose great amounts of untreated sewage sl...