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Low concentration of chlorinates maybe found in wastewater, contaminated soils and air due to different industrial sources. Low level of Volatile Organic Compounds (VOC)’s could be removed by adsorption, incineration and biofiltration methods. These methods have some disadvantages such as removal efficiency or high operation cost. Chlorine has been removed from the chlorinated aliphatic compounds under anaerobic conditions. The aim of this study was to investigate biological treatment of DCM and CT in high flow ...

This paper describes removal of Pb(II) ions from aqueous solutions using NaOH modified pine barks (Pinus nigra). Chemical modification and its enhancement effect on adsorption capacity for heavy metal treatment process have been investigated in this article. Changes of the surface properties after modification were examined by the FT-IR analysis. Maximum adsorption capacity was 49 mg/g at pH 8 and during about 180 min contact time (for 35 mg/L initial concentration with 2.5 g/L solid-to-liquid ratio) These modific...

Wastewater treatment plant design calculation is complex and time-consuming task. The person who is in charge of calculations should be sure about the criterias about the unit to be sized and should use appropriate inputs. Vital point of design is generally using the best input within the range to have more sensible results. Web based design calculations of wastewater treatment plant software has been coded. PHP and JavaScript languages have been used to achieve these advantages. With the aid of error checking, th...

At present, there is a lot of interest in the use of dynamic simulation for optimization and operation of wastewater treatment plants. For this purpose, different mathematical models are used. Development of these models requires a complicated conceptual approach. It involves identification of all carbonaceous and nitrogenous components. The Activated Sludge Model No.1 (ASM1) presented by the IAWQ Task Group on Mathematical Modelling for Design and Operation of Biological Wastewater Treatment Processes is generall...

In this article, pollution of ecological systems with heavy metals and their hazardous effects were investigated as a view of waste management. Several industries from mining to electroplating produce large volumes of wastewater containing heavy metals. These wastewater cause accumulation of heavy metals through ecological circle in soil, plants and animals which directly enter human food chains presenting a high hazardous effect on consumers. They may cause severe damage of the kidney, reproductive system, liver,...

Low concentration of chlorinated aliphatic compounds may be found in wastewater and contaminated soils from different industrial sources and in the air arisen from these type sources. Low levels of Volatile Organic Compounds (VOC)’s could be removed by adsorption, incineration or biofiltration methods. These methods have some disadvantages with low removal efficiency or high operation cost. Chlorine has been removed from the chlorinated aliphatic compounds by biological methods at anaerobic conditions. The aim o...