Investigating the principles of water treatment and industrial wastewater

This article examines the principles of water treatment and industrial wastewater. The increasing expansion of human societies and advances in industrial fields, although they have brought special benefits, have also brought many problems to communities. One of these problems is sewage from residential areas and the activities of industrial units. Due to improper disposal of domestic and industrial wastewater has adverse effects on the environment, the more complete wastewater treatment becomes more important. Domestic wastewater and more importantly industrial wastewater due to the presence of organic and mineral materials, if discharged into the environment causes pollution of surface and groundwater and as a result reuse of water for its best use is difficult. The volume of wastewater in an industrial unit depends on factors such as the type of product, production method, tools and equipment, etc. Cattle and sheep slaughter units are among the industrial units that have a relatively high volume of sewage and very severe pollution. At present, in most cities of Iran, there is a slaughterhouse for slaughtering cattle and sheep. Sewage from these slaughterhouses is mostly discharged to wells, rivers, abandoned canals without the slightest treatment, and in the best case, the sewage is discharged into the environment after passing through a simple sedimentation pond. In addition to mineral and organic pollution occurring in this way, there is the spread of common diseases between humans and livestock through the disposal of sewage from slaughterhouses due to non-compliance with health issues.