Biological Aeration

Nualgi - Biological Aeration

Aeration is one of the most critical and expensive processes in Wastewater Treatment. Sewage Treatment Plants and Effluent Treatment Plants that use aerobic process have to provide the oxygen required by the aerobic bacteria to enable them to breakdown the organic matter in sewage.

Aeration is conventionally done using mechanical electric powered aerators. The power consumption by the aerators is very high and accounts for upto 50% of the operating cost of the STP / ETP. In addition it leads to emission of CO2 at the power generation plants.

Diatom Algae are a specie of beneficial algae (unlike Green Algae and Blue Green Algae) that can grow rapidly and these are microscopic aquatic plants that release oxygen during photosynthesis.

These however require iron, silica and other minerals to grow rapidly. Nualgi is a plant nutrient that provides all the nutrients required by diatoms and this results in a rapid bloom of diatoms within minutes of dissolving Nualgi in the water body.

1 kg of Nualgi results in release of about 100 kgs of oxygen over 5 days, this increases the DO level of the water to about 6 mg / litre. Regular use of Nualgi will maintain the DO level.

The aerobic bacteria breakdown the organic matter into base constituents and this becomes food for the diatoms. Thus diatoms and aerobic bacteria have a symbiotic relationship – Diatoms provide the oxygen required by bacteria and the bacteria provide the food required by the diatoms.

The cost of 1 kg of Nualgi is just Rs. 275/- and this treats about 4 million litres of water, thus cost of aeration is just Rs. 0.07 per kilo litre.

Use of electric powered aerators also results in emission of Carbon dioxide by the power plants. Whereas use of biological aeration results in absorption of Carbon dioxide by the diatoms.

NUALGI - SOLUTION TO POLLUTION

Nualgi
Solution to Pollution
Solution to human waste treatment (Water pollution)
Solution to Carbon dioxide emissions and Global Warming (Air pollution)
By product – fish (increase in food availability)
www.nualgi.com/new and www.kadambari.net
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Key Words – Phyto-remediation, bio-remediation, wastewater treatment, sewage
treatment, lake remediation, aeration, diatom algae, water pollution, polluted lakes.
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All of us contribute to sewage and pollution.

We generate waste and flush it down the drain and it flows out as sewage.
In Indian cities one person generates about 100 litres of sewage per day.

We burn fossil fuel -
for conveyance – two wheelers, cars, buses, trains and aeroplanes,
LPG for cooking, and
electricity at home and office.
50 litres of petrol releases 150 kgs of carbon dioxide and 1 kWh of electricity from coal fired thermal power plants results in 0.8 kgs (Avg) of carbon dioxide emission.

The Problem:
Disposal of human waste is becoming a great challenge day by day. Rapid urbanization has increased the amount of sewage and higher population density has reduced the space available to set up STPs. Pumping and treatment of sewage is very expensive and lack of adequate sewage treatment facilities is resulting in pollution of lakes and rivers.

Higher CO2 in the atmosphere is leading to global warming.

The Solution :
Now there is a simple and effective solution within the reach of everyone to contribute directly to the cleaning up of sewage and to reduce CO2 in the atmosphere – NUALGI.

You are aware that aforestation leads to cleaner air, similar results can be achieved by growing algae in water. Algae are aquatic plants that also use photosynthesis to absorb CO2 and release oxygen.

Higher oxygen levels in water enable aerobic bacteria to grow and these breakdown organics in sewage into the base constituents, these are consumed by plankton or become harmless sludge.

What is Nualgi?

Nualgi is a plant nutrient in Nano particle size and this is used to grow diatom algae in any water including water polluted with sewage. It has micronutrients (P, Ca, Mg, Fe, Mn, Zn, Cu, B, S, Co, Mo, Si) in nano form (20 nano meters to 150 nano meters in size) and these are easily absorbed by the microscopic diatom algae (0.05 to 0.5 mm in size).

Diatom algae are aquatic plants that undergo photosynthesis and absorb carbon and release oxygen and they also consume nutrients like nitrates and phosphates, thus removing them from the water body.

Diatoms have a silica body and are eaten by zooplankton, these are in turn consumed by fishes, higher fish population attracts birds, thus polluted lakes and rivers are restored to their original glory.

Green and Blue Green Algae have a cellulose body and hence cannot be consumed by Zooplankton. Thus when these proliferate in polluted lakes the lakes become green in colour and smell due to the decaying organics and algae.

Nualgi dispersed in water looks like a solution but has very fine particles of the size estimated to be 20 to 150 nanometers. The particles are not visible to the naked eye or under compound microscope.

Nualgi is made by a complex process. The product has been patented, Indian patent no. 209364 dated 27/08/2007. PCT Patent has been also been granted.