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Treating Wastewater – STP

Sewage_Treatment_Plant

Treating Wastewater – STP

Water is one of the most essential necessities of life. As we all are aware, one of the most significant issues faced by the society now is the shortage of fresh water, thus, increasing the price of water, and limiting the usage of water to bare minimum and basic needs. With the rapid speed of urbanization in the country, the need for water also increased rapidly, but without the resources to meet the need. As of now, around 80 percent of the water used for domestic purposes, comes out as wastewater. But sadly, most of the wastewater is left untreated which results in pollution. This, if treated, could be used for flushing toilets and watering plants and several other uses. With today’s ever-evolving technology there are some of the ways water could be treated, helping us regain as much as reusable water as possible. One such process for treating water is STP- Sewage treatment plant.

Sewage treatment is the process of removing contaminants from wastewater and household sewage water. The sewage treatment plant, in short STP, processes are of two types – Anaerobic sewage treatment and Aerobic sewage treatment. But the most convenient process for small-scale treatment is the Aerobic sewage treatment. In this treatment process, aerobic bacteria are important, as they digest the pollutants. There must be a constant supply of air for the bacteria to colonize which could be achieved by surface or diffused aeration. The most modern aerobic sewage system uses natural air currents that do not need electricity or petrol or diesel to run motors for aeration.

Sewage treatment plant involves four stages – the preliminary treatment, the primary treatment, the secondary treatment, and the tertiary treatment. The conventional diagram of STP includes screening and grit removal from the wastewater in the preliminary stage. Sedimentation in the primary treatment follows the previous stage. In the secondary stage, activation of sludge or the trickling filter takes place. And in the last stage, the disinfection, nutrient removal, and solids removal occur. The whole process at the end results in treated water which is reusable.

Wastewater treatment should be highly emphasized not only in apartments but also hospitals, malls, restaurants, etc as it not only saves water by making water eligible to reuse but also stops the damage caused when wastewater is directly released into the environment. It is affordable and simple. It also increases the standard of living of the society. Sewage treatment is a one-time investment. It may cost around maybe fourteen lakh rupees for a 100 apartment community but it just takes 25 rupees per family per month to keep it running. The efforts, as well as the money, are all worth it, in the end.

At the moment it is necessary for all communities to think seriously and act on wastewater as the crises of water shortage is not going away anytime soon. Before we know it, India may become the next Flint (USA) or Cape Town. It is absolutely important to keep the future generations in mind while we progress.

Reference- http://www.crystaltanks.com/sewage_treatment_explained.html
https://economictimes.indiatimes.com/treating-wastewater-with-the-help-of-modern-technology/toshibashow_dp/55050324.cms

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Housing societies take it upon themselves to recycle

Recycling_of_Waste

Housing societies take it upon themselves to recycle

JK Rowling once said, “We are only as strong as we are united, as weak as we are divided.” The famous quote, along with other such phrases and idioms on unity, stand true in the world we live in. When people come together for or against a cause, the results are otherworldly. An excellent example of the effect is Matoshree Pearl Housing Society.

The 22-storied apartment complex in Mumbai houses 65 flats that come together to recycle and reuse the wastes from each home. Wherein the wet wastes, then, is used as manure for the 4,000 square feet terrace vegetable and ornamental garden.

The housing society’s green movement started three years ago when a collective decision was made by the management committee of Matoshree Pearl to use LED lighting instead of tube lights and CFL bulbs. A member of the group, Satish Kini shared, in an interview with The Better India, how he did not wish to stop there. Instead, he went on to find a solution for the friction between the society’s housekeeping staffs and local corporation workers by finding out the root cause—waste management. In a quest to find a way to be less dependent on the BMC (Brihanmumbai Municipal Corporation) for the disposal of garbage, Kini approached RUR Green Life—a social environment enterprise.

With RUR’s help along with support from the management committee, Kini launched a Go Green Campaign in October 2017, the aim of which was to educate the residents about segregating their kitchen wet wastes and turning them into compost. Despite the difficulties the society had to face in terms of infrastructure and implementing their Green plans, the inhabitants came together to fund the terrace garden. Utilizing RUR’s proprietary Bio-Composters and multi-level segregation of dry, recyclable, and non-recyclable wastes from each house, they have created a system that runs like a well-oiled machine.

Everyone in society has his or her part to play in the maintenance of the terrace garden. Children have the responsibility of individual patches distributed among them, and homemakers and the elderly help them with their task. To irrigate the plants effectively, the housing society utilized drip irrigation. The first phase of the terrace garden, however, was creating the manure out of the composters. Approximately, 60-70 kg of manure was produced in a month from 700-800 kg of kitchen waste. Once the compost was ready, the society started planting saplings of decorative plants. It was only later that Matoshree planted vegetables like tomatoes, cucumbers, etc.

All the hard work of the residents and housekeeping staffs, who were in charge of segregating the wastes, paid off when the society started harvesting a variety of vegetables. These veggies are, today, used by the inhabitants; saving money on groceries. However, their hard work benefits the BMC more, for they observed a reduction of 1000-1200 kg of wastes sent to the landfills around Mumbai. With other eco-friendly projects like solar energy production and sewage water treatment in the pipeline, Matoshree Pearl Housing society shows that unity can overcome any number of hurdles and achieve a greater effect.

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Ground-breaking technology for saving the environment in India

Rain_Water_Harvesting_01

Ground-breaking technology for saving the environment in India

Innovation and technology have made life easier for us humans today. But the question is, can technology also save our environment? Today with the growth of population, urbanization is increasing rapidly. And with the humdrum of busy lifestyles, people often become careless about the environment. In India, pollution is an enormous threat to the environment. But the good thing is, numerous housing societies and even our government have opened their eyes to this threat. With the usage of innovative technology today, we are moving towards a better future.

New technologies and initiatives in India for saving the Environment

With the Swachh Bharat Abhiyan initiated by prime minister Shri Narendra Modi, our government has taken a huge step. This all-India cleanliness campaign has so far been successful in spreading awareness about clean water and sanitation. Other than our government, even Indian entrepreneurs, start-ups and societies are coming forward to help. According to a recent report in Times Of India, the Roseland Residency is one among those societies in Pune.

Rainwater harvesting project in Roseland Residency

With the rainwater harvesting project implemented by the Roseland Residency, their dependency on water tankers has lessened. The project that started in 2009 with six buildings, now has rainwater harvesting in eight to nine buildings. This project is extremely environment-friendly and reduces the money spent on tankers too. With the success of this project, Roseland residency won the Swachh Bharat Abhiyan award in RWA category.
According to the article published on TOI, chairman Santosh Maskar spoke about receiving less water from PCMC. With 1000 flats in 30 buildings the demand of water supply is constantly increasing. Today, with the help of their rainwater harvesting project, the groundwater levels have increased sufficiently. Now they can draw water from the borewells and don’t have to depend on the water tanks.
The best part is, many other societies have started to implement rainwater harvesting techniques too, the reason behind this being the success of the project in societies like Roseland residency. Societies like Kunal Icon Housing Society and Rosewood Apartment in Pune have implemented it too. Maskar has said that he is looking forward to helping other societies too.

Future of waste management and sewage recycle

Recycling sewage waste, providing high-tech biogas technology to managing solid waste, technology has made everything possible today. Today, the latest technologies gaining popularity are:

  • Reverse osmosis membrane technology is used by the industries today which provides zero discharge while recycling.
  • High-Tech technological products provided by Green Nerds has brought solutions for waste management.
  • Vermiculture biotechnology provided by Vermigold company today helps to recycle organic waste hands-free.

In conclusion, it’s high time that we all take our environmental issues seriously. Fortunately, with awareness and technological advancement, we can still bring a change. Nagpur is soon going to become the first city in India to recycle 90% of sewage water. And with the right resources, all the other cities can too. But first, let’s start the change with our own societies.

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An Awe-inspiring and Eco-friendly Feat of a Mulund Society

Solar_Energy

An Awe-inspiring and Eco-friendly Feat of a Mulund Society

It is not news that global warming is on the rise. There is nothing new about the climatic effects that the phenomenon has, over the past few years. With increasing carbon footprints and widespread pollution, global warming levels have gone up, if that were possible. So much so, that the Paris accord was signed by nations across the globe to control and reduce the emission of harmful greenhouse gases.
With so much effort put in to stave away the effects of global warming at an international level, there are societies within India, that are doing their bit in conserving the environment. One such being Grace Co-operative Housing Society in Mulund West, who switched to solar energy, saving up to five lakhs yearly, and 41,000 rupees monthly on electricity bills.
With around 160 apartments, Grace Co-operative society installed over 94 solar panels to power lifts and common areas spanning across its five building complexes. The 29.4 KiloWatt power setup can generate up to 45,000 and 120 units of electricity yearly and monthly, respectively. The entire setup cost the residents, collectively, around 18.5 lakh rupees.
Despite the installation cost, the residents remain positive about the outcomes of their step to using renewable energy. In an interview with the Hindustan Times, a resident was quoted saying, “We expect to recover the cost of installation over the next three years. We will also be recovering Rs 5 lakh through a subsidy provided by Maharashtra State Electricity Board (MSEB) as per government rules.”
The residents also divulged in the interview that they currently use a net-metering system, that sends the excess power generated by the solar back to the grid. Any deficiency in electricity is imported from the panels as well. The system, in the end, not only benefits the residents of the society but also people in the city who experience daily power cuts. For the surplus current can be used to supply electricity to them.
Aside from adopting solar-powered electricity, Grace Co-operative Housing Society also segregates its garbage and recycles the same. They have been following this practice for four to five years now, and have recycled over 3.28 lakh kg organic wastes. Daily, every house segregates its dry, plastic, and organic wastes. The former is picked up by the civic body’s dumper truck, while the latter is dumped in the compost drums.
Inside these four drums, the organic wastes turn in to manure, which is, then, used to supplement the growth of over 100 trees planted within the society. Through this, they generate up to 30 kg of manure for the plants in one month alone. In the interview with the newspaper, a resident said, “We are following a zero-waste concept as there is 100% waste segregation in the society.”
In a world where the US has exited the Paris Accord, what Grace Co-operative Housing Society has achieved with a united wish to reduce their carbon footprints, is awe-inspiring. They, most definitely, set an example that every society should follow for years to come.

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Reduce, Reuse, Recycle!

Degradable&Non-degradable_waste

Reduce, Reuse, Recycle!

In the initial days of economic and industrial development, there existed a common notion that for such development to occur, the environmental interests have to be set aside. With the development of ground-breaking technology over the years, the environment does not need to be in jeopardy anymore for the sake of economic or industrial development. The sustainable model of development has been discovered for this purpose. This mode of development protects the interests of the environment and promotes economic and industrial growth at the same time. It revolves around the golden principle of Reduce, Reuse and Recycle and includes procedures such as rain-water harvesting, sewage recycle, effective waste-management, usage of renewable sources of energy and the like.

Let us take a look at some of the remarkable residential societies in India who have successfully implemented these procedures for the sake of a brighter and greener future:

Houses in Muttukkadu:

While sewage recycling is still a problem in most parts of India, in Muttukkadu, almost all the houses are built over a sewage treatment plant. In these sewage treatment plants, the waste is treated by using German technology. The wastewater goes through a precise sequence of aeration, sedimentation and, the removal of clear water. What is special is that the entire procedure does not lead to the production of any kind of odor.

For more information, visit:
https://www.thehindu.com/features/homes-and-gardens/design/a-sewage-treatment-plant-for-every-home/article4749698.ece

Garden Estate in Gurugram:

This housing complex has set out a remarkable example for housing societies all across India in the field of waste management. With a setup that cost them only Rs. 50000, this society processes almost 240 kilos of waste everyday originating from almost 2000 residents. There are three different bins for waste- the green one is for kitchen waste, the red one for non-degradable disposables and the white one for the recyclable materials. Moreover, the sewage treatment plant of this society generates around 75,000 litres of water every day and the weekly surplus water is donated to a nearby biodiversity park.

For more information, visit:
https://www.youtube.com/watch?v=zd4D43KUyxk

Roseland Residency in Pune

In the Pimple Saudagar region of Pune, the housing societies often end up spending lakhs of rupees for the construction and maintenance of tankers to store water. The Roseland Residency has successfully cut off such unnecessary expenditures by investing in an effective rain-water harvesting system that serves around 1000 flats in 30 buildings. The other housing societies, like Kunal Icon housing society, have adopted the same procedure.

For more information, visit:
https://timesofindia.indiatimes.com/city/pune/pimple-saudagar-society-uses-rainwater-harvesting-to-beat-water-woes/articleshow/57696782.cms

These housing societies or communities have set forward an excellent example for India by adopting sustainable modes of development. Such methods make these societies independent, self-sufficient and eco-friendly at the same time. Moreover, such methods have proven to reduce expenditures in a significant manner too. It is high time that we protect the environment and adopting sustainable development methods in your very own housing societies or communities is the best place to start with. As they say, charity always begins at home.

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