conclusions with the proper operation of wastewater the treatment plant and increasing the retention time, the removal efficiency of the detergents increased. in addition, according to the environmental standards for bod5, cod and the detergents, the results of the present study indicated that the outputs of these parameters from the sbr system were appropriate for agricultural irrigation. resu...

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A study was carried out to investigate the effects of municipal wastewater treatments on physical and chemical properties of saline soil. Recently, the amounts of wastewater are sharply increasing and the kinds of pollutants are also varied as the world wide industry is being developed incessantly. Soil samplings of 0-20 cm depth were from Segzi plain in Isfahan province (the center of Iran). T...

Most tanneries use conventional systems for treatment of the mixture of all production effluents. Such an approach makes it possible to meet environmental regulations, but because of the high cost of the treatment facilities, its implementation has been scarce, especially in developing countries. With the waste reduction-elimination concept in view, an alternative strategy for water management ...

Carbon dioxide is a green house gas that exists in earth’s atmosphere. In recent decade’s due to increment of population and rapid industrialization, the amount of CO2 has increased significantly and has caused global warming and other problems. Different methods are used for reduction of CO2 concentration in air one method is storing CO2 gas below the ground, but this manner doesn’t provide a ...

The paper provides a critical comparison between mesophilic and thermophilic anaerobic treatment of PTA wastewater through diagnosis of a case study. Aspects covered are bioavailability, biodegradability, microbial population, thermodynamics, kinetics involved and bioreactor design for PTA wastewater treatment. The results of the case study suggests that onestage thermophilic anaerobic reactor ...