Frequently Asked Questions About Sewage Treatment | Chokhavatia Associates

People have many question about Sewage treatment and its plant ,because they don’t have total knowledge about this and you never know when you might have to deal with this treatment in future. There are some FAQs given below which often discuss.

1.What is the major difference between Sewage treatment plant, septic tank and CESS pit? What can I use septic tank or sewage treatment plant? 

->There are three types of treatment system in use: Sewage Treatment Plant:-Higher level of treatment than septic tanks and provides Consent of Discharge is in place. Purified water is reusable .Modern Plants are preferred for this treatment. Septic Tank:-It provides minimum treatment. It is a system that flows effluents out and retained solid waste in tank, until not doing the tank empty. It clears water from chemical effluents and makes better environment and water also. It is used for small domestic developments. Cess Pit:-It is also called Cesspools.

It simply holds tank which is emptied by tanker basically. There is no treatment in this. It has large structure and not suitable due to operating cost. It is the least useful plant. 

2.What is the custom designed plants of sewage treatment?

 ->The plants which are design as we want ,they don’t have particular plant pattern called custom designed plants. If we want purified water we make wastewater treatment plant, sometime biological treatment plants are useful. Many Eco water systems make their own sewage treatment plants. 

 3.Why my Sewage treatment plant is smell? Is there any issue about it?

 ->Sometimes the arrangement goes improper ,and it is a septic tank ,it has drain pipes. The pipes must be sealed and connected to correct location. Disposal of Septic tanks must have right intervals. How to forget it is a biological aeration plant, so it integrates an aeration process. So if smell detect than go through the manufacturer’s guidance. 

4.What is “Consent to Discharge”? and how long does it take to get it?In India is there any legal document ? 

-> Consent to Discharge is a legal document or No objection certificate which is provided by local environmental agency. They have authority to measure parameters of treated sewage which satisfy their rules and reuse water to other system.

->They set specific time period for particular sewage treatment plant by its performance.

 ->In India individual homes are not require NOC or CTD. But Industries and other organization require legal document for further process. 

 5.What is BOD5?

BOD means “Biological Oxygen Demand”, and ‘5’ stands for 5 days long test to carry out. First of all it measures the pollutant’s strength and organic value of an effluent. Then after it goes for incubation and measuring oxygen level. The sample is incubated at 20̊C for 5 days. This process is done many times until oxygen level is not set. It represents microorganisms’ level of activity which are present in the effluent. The activity level should match the level of pollutant’s strength and organic value of an effluent. So it is directly proportional to each other. In some process oxygen will be depleted if an effluent is strong for aquatic environment.

These are some FAQs related to Sewage Treatment Plant .Hope these are useful.

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.

Treatment of Wastewater Plant How is it Beneficial

In urban settings or in municipal areas, Treatment of Wastewater comes under the wings of the Public Works Department. This administrative agency is entrusted in managing solid waste and sewage treatment that includes human waste along with storm water drainage etc. Treatment plants meant for wastewater in these stretches handle adulterated water besides the by-products and even the effluents from wastewater; and these effluents and garbage includes sewage sludge, stones, pebbles and screenings. In this set-up the waste water collected is mostly from households and industries located within the boundaries of the urban set-up; so the treatment can be referred as ‘sewage Treatment”, although in handful of cities the septic tanks can also contain large amount of manufacturing effluents and in addition to it one can find storm water too.

And so, sewage treatment mainly comprises of the practice of getting rid of noxious waste through a complete blend of procedures that consists of physical, biological and chemical processes. Principally, after competition of entire process, it is ensured that the end product in form of water is environmentally safe, and it is fit or suitable for all type of usages. Almost all set of Treatment Plants have ‘centralized systems’, which implies it has a vast and extensive set up of aerobic systems, bio filters along with septic tanks.

In most of the realms today, the term ‘waste water treatment ‘has been switched to the ‘sewage treatment’. Waste water treatments located Urbanized regions treat mainly effluents and polluted waste disposed from residential zones as well as from business places. Polluted and adulterated waste discharged from industrial and manufacturing units, refineries and related regions is being handled onsite through related setups and facilities to guarantee that polluted waste are treated prior to releasing them to the local environment. Keeping in mind the purpose behind such processes and the procedure adopted one can say that it is a complex action. Initial stages, wastewater passes through cool machines and the boiler system before undertaking a second platform of treatment, and being utilized for other purposes. It is undeniably important that all dirt should be eradicated before releasing the water in to nature as it is unlawful to let out untreated solution to lakes, ponds and other water reservoirs. As an entrepreneur if you are careless regarding this, you can invite harsh punishment and trial too.

Benefits of Installing Such wastewater Treatment Plants

After cleaning polluted water from primary practices, subsequent steps consist of secondary treatments, and later on bio-solid hand lings, along with tertiary treatment. Besides, disinfection and sludge treatment is also given in due course. Such practices provide a number of benefits to the environment, by preventing water pollution. It ensures that environment does not deteriorates further, and maximum usage of water a natural resource is done. This technology, offers alternative water resource to industrial set ups, and by keeping a check, outbreak of water borne diseases can be prevented. On the other hand, adequate water allocation for agricultural and irrigation purposes is maintained.