for social and cultural condition of country using weakest and returned water in different uses especially in agricultural consumption is not public and also is faced social opposition. in this study, it is tried to investigate several products in different levels of consumption according to consumer’s views who reside in tehran by mean of willingness to use concept. data are collected in 2012 ...

the purpose of this research was to investigate the attitude of vegetable growers towards sources of soil pollution in ray county. the study consisted of all vegetable growers (n=700) in ray county, located in tehran province, from which 70 vegetable growers were selected through random sampling technique. a planned questionnaire was used as the main instrument to collect data. the content vali...

The results of research on physical and chemical methods for the preliminary treatment wastewater a cardboard paper factory in Khmelnytskyi region are presented. At factory, is treated at sewage plant, which includes sand traps, primary radial sedimentation tanks, aeration tanks with activated sludge regenerators, secondary bioponds. use coagulation chlorination before biological was proposed. ...

Using microbubble ozonation (MO) technique to disintegrate sludge is a promising treatment process. To enhance the lysis and reduction of sludge, catalytic consisting MO sewage derived char (SC) were combined. Total solids (TS), volatile (VS), total nitrogen phosphate (TN TP) selected as main parameters for evaluating performance both in supernatant. With utilization MO, ozone largely improved....

Heavy metals are an important class of pollutants which can produce considerable harm to the environment when they are above certain concentration [1]. In these days, heavy metals pollution are detected in the rivers, lakes, soils and atmosphere environment of the world, where have relatively much more man-made pollutions, such as mining area, factory parks, busy ports and gulfs, and sewage irr...