Wastewater reclamation plants – treatment plants that use additional processes to purify sewage – are already in operation. They produce water to irrigate crops highway landscaping golf courses and parks as well as to be reintroduced into the ground for groundwater recharge which ultimately could end up in drinking-water supplies.
Caustic treating is a refining process that uses an aqueous solution of NaOH to absorb acid gas compounds like H2S CO2 and mercaptans found in natural gas or liquid hydrocarbon streams. Crude oil fractions that exit from the vapor stream in a distillation tower contain sulfur- based compounds which are odiferous and corrosive.
Sewage treatment is the process of removing contaminants from domestic and municipal wastewater containing mainly household sewage plus some industrial wastewater.Physical chemical and biological processes are used to remove contaminants and produce treated wastewater (or treated effluent) that is safe enough for release into the environment.
Other chemicals used in other applications in this process are alum and ferric sulfate and ferric chloride aluminum sulfate among others. A second use of chemicals in wastewater treatment is to adjust the pH level. Almost every industrial manufacturing company and wastewater treatment operation deals with pH Adjustment on some level.
Hori H. Oils and Fats Product The Best Treatment of Food Figure 3 -5- 131Schematic flow of milk and dairy products Figure 3 -5- 333Schematic flow of wastewater treatment of milk and dairy product factory -5- 2 .2In spite of the pollutant concentrations in the wastewater being lower than the design figure the BOD in the effluent sometimes .
The use of cactus for water treatment represents a major advance in sustainable environmental technology . It’s a vital effort in line with the global initiatives. The coagulation ability of the cactus is highlighted and the different species of Opuntia are used in human food fodder medicine cosmetics and bio-coagulant .
Chemical treatment is now considered as a tertiary treatment that can be more broadly defined as “treatment of wastewater by a process involving chemical treatment”. The mostly implemented chemical treatment processes are: chemical precipitation neutralization adsorption disinfection (chlorine ozone ultraviolet light) and ion exchange.