Why waste water treatment is important for our environment | Chokhavatia Associates

The surrounding of our houses and workplaces are our environment.

We have to take the responsibility to keep our environment safe and prevent it from pollution. Our environment can be in great danger if we are not taking proper precautions through wastewater treatment before it can be released back into the environment. Drastic efforts like depletion of fishes, water habitat and eradication of species are some of the common hazards caused due to environmental pollution. Let’s see some of the waste water treatment in India and how it can be safely released back to the environment for a healthy habitat.

What is waste water?

If you are curious about how the waste water is treated, before that, you might actually need to know what this waste water is really. Waste water is the water that drains from the kitchen sinks, baths, showers, toilet and industrial waste. This waste water is collected in big tanks for the process of segregating waste materials. Once the water is collected in huge tanks, the solids and waste substances settle down in the bottom, while the oil and fat substances float on top of the water.

Waste Water Treatment

The waste water goes through a series of steps before the harmful substances are completely removed from them. Sludge is formed after the waste water is left to remain in huge tanks. This sludge is removed for further treatment to make it harmless to the environment. The water is moved to secondary waste water treatment process for further processes.

During the next process, micro organisms are introduced into the tanks to decompose small elements that remain in the base of the waste water. It is also aerated with oxygen for cleansing process. The sludge that remains in the bottom is scraped and removed while the left over waste water is moved to tertiary treatment.

During the last level of waste water treatment harmful chemical substance like nitrogen and other are removed from the waste water. Once the waste water is designated to be environmentally safe it is then drained into rivers, water irrigation and agricultural lands.

Environmental Hazards

Talking about the environmental hazards, if the waste water is not treated properly it can lead to dissolved oxygen levels that affect the habitat of fishes and other aquatic life.

• Excessive levels of chemical substances like nitrogen or phosphorus can be poisonous, deplete oxygen level and affect marine life.
•  Further, chemicals like chlorine can be harmful to invertebrates like algae and fish.
•  Bacteria and viruses can cause severe damage to life inside water, reduce human recreation, water consumption & consuming shell fish.
•  Certain metals like mercury, cadmium and lead can have high degree of toxic effects to water species. 
•  Pharmaceutical and daily use personal products that enter into the environment can cause human health effects, threats to aquatic life and wildlife
• The wastewater treatment in India successfully removes the contaminants through a series of process. The end process consists of water that is free from chemical and microorganisms and is considered to be environmentally safe. The water is drained into water bodies like rivers, irrigation or agricultural lands for use.

We are at Chokhavatia Associates Waste water Management company. We mainly offers Common Effluent Treatment Plant (CETPs), Sewage treatment plant (STP) ,Effluent treatment plant (ETP) design & development Services. You need more information about our projects and plant please visit here: chokhavatia.com 

Sewage Water Treatment Process | Chokhavatia Associates

Sewage water needs to be treated in the sewage plant before it can be drained into the environment. Careful measures need to be taken. If not, it can lead to harmful effects in the environment. Health issues, water pollution are some of the problems that are caused by the sewage water if not treated properly.

The sewage is the waste water that is collected from wash basins, toilets, baths, washing machines and industrial waste. They are treated through a series of steps until it’s treated and finally drained back into environment when it’s considered to be safe.

Screening

Screening is the initial process in sewage water treatment. The sewage system makes use of the septic tank that collects and stores the sewage water. The solids settle down and the remaining water is sent downstream for processing through 6 inch to 4 inch pipeline. Such a process is called a decentralized system where every house’s sewage is treated in separate septic tanks.

During the screening process, large objects like diapers, tampons, sanitary items, face wipes, plastics and rags are removed to prevent from any blockage in the downstream to the sewage plant. Items like grit are removed using special equipment that gets washed away into the sewer.

The sewage water treatment can use the gravitational force to get to the sewage treatment plant. In-case if the pipeline excavation is not possible due to hard rocks or any other reason, the sewage water need to be pumped into the pipeline right to the sewage treatment plant. The pipeline measurements range from 6 inches up-to 30 feet of well built concrete tunnels.

Primary Treatment

During the primary treatment, solid waste (human waste) is separated from the waste water and sent to be treated. The wastewater is collected in large settlement tanks, where the solid waste gets settled leaving the water on the surface level. There is also fat that rises to the top and form a crust. The liquid in-between the solids and crust is sent to secondary treatment whereas the solids and the top layer of crust are sent for further treatment periodically.

Secondary Treatment

The water from the primary treatment is placed on large rectangular tanks. Now, oxygen is supplied into this process to encourage the growth of bacteria. The bacteria break the tiny bits of sludge that might have escaped during the previous treatment. It also reduces other pollutant and detergents that might still be mixed with the waste water.

Final Treatment

In this process, the waste water is passed into a settlement tank. Excess sludge is formed again due to the bacterial action. This sludge is repeatedly scraped to remove from the water. Once the sludge is removed, the water is free from pollutants. The water at this stage is completely free from any kind of harmful physical or chemical substance, and it is free to be drained into the river.

The waste water goes through several stages in the sewage treatment plant to make it safe for the environment. The water is thoroughly treated until they make sure that it is clean and pollutant-free before discharging it to the water bodies. One more important factor for screening the sewage water is to prevent any diseases that may be caused due to bacteria, virus or any organisms.