What is wastewater treatment?
Wastewater treatment is the process of wastewater use and causing it suitable for discharge back to the environment. Waste water can be created by a number of activities, including washing, bathing and using the toilet. Rainwater drain is also considered waste water. Regardless of where it comes from, this water is full of bacteria, chemicals and other contaminants. Wastewater cleaning reduces contaminants to acceptable levels to be safe for the environment. Most households and businesses create waste that can be divided by natural means. Biological treatment plants use bacteria and other biological mass to decompose waste. Industrial waste water may contain chemicals that can damage the environment, so a chemical plant is required to treat this waste. Physical/chemical sewage treatment plants use bophysical processes and chemical reactions to waste water treatment.
Biological wastewater treatment plant such as urbanThe treatment plant, uses several tanks to clean the waste water that comes into it. First, the waste water is proven to remove easily removed objects, some of which could destroy the dry cleaning machine. Furthermore, the waste water is transported to the primary settling pan, where it can float or decrease in the tank. The remaining water is then sent to the secondary treatment tank, where biological matter, such as bacteria, removes most of the remaining suspended matter.
substances that are removed during water treatment are called sludge. This sludge is treated and can be used as fertilizer or when reclamation of the soil or will be sent for filling or combustion of the soil. To treat sludge, waste management experts can use anaerobic digestion, aerobic digestion or composting. The difference between anaerobic and aerobic digestion is that aerobic digestion occurs in the presence of oxygen where as anaerobic grassNot. In composting, the sludge is mixed with carbon before the introduction of digestion bacteria.
After secondary treatment, the water is then sent by tertiary treatment. This treatment is the last phase before the water can be released into the environment and usually ends with a disinfectant step. This step is actually a chemical processing in biological processing. Treated water, called drain , is then destroyed in the environment. This regenerated water can also be used in fountains and water lawns.
Physical/chemical wastewater treatment begins with removal of suspended solids from waste water. The water is pumped into large tanks where the mass settles or decreases, as in the biological treatment plant. As in the biological treatment plant, this process can be helping that mix water and cause small particles to connect to larger particles. In a physical/chemical plant, this process can also be supported by the addition of flocculants, chemicals,that make up larger particles. Dissolved air can also be used to help remove particles.
Chemical processes include added chemicals to precipitate dissolved materials. Chemicals, such as chlorine, can also be used to convert cyanides into carbon dioxide and nitrogen. Organic chemicals can also be oxidized by adding ozone or hydrogen peroxide. Chemicals in waste water can also be divided using ultraviolet light. City treatment plants can also use chemical treatment to remove materials such as phosphorus from waste water.