3. Pan from electricity junction box to street light
4. Various of street lights
5. VOXPOP: (Tamil) Housing Colony Resident:
"The benefits of the biogas plant are that we can run the street lights and electricity is saved. The electricity generated is enough to light five mercury lamps and ten strip lights."."
6. VOXPOP: (Tamil) Housing Colony Resident:
"Although my house is located quite close to the biogas plant, there is no bad smell or pollution because of it. We live here just like before. It is a very good scheme to implement especially in rural areas as they are more spacious than towns and cities."
7. Wide of board saying, 'Thiruneer Malai Town Panchayat'
8. Wide of pipe going from digester to generation room
9. Electricity generation room
10. Electricity generator
11. Methane gas cylinder
12. Pipe carrying methane gas
13. Fan of electricity generator
14. Various of switch board controlling electricity production
15. Wide of pipes carrying methane
16. SOUNDBITE: (Tamil) P Balraj, Secretary, Thiruneermalai Housing Colony:
"The government can minimise the problems of defaulting consumers and the shortage of electricity in towns and cities by going in for biogas generated electricity."
17. Wide of rubbish truck unloading waste at dump
18. Various of rubbish collection site
19. SOUNDBITE: (English) A Mohan, Manufacturer, Bio-Gas Plant:
"Yes it is mainly used in flat systems (apartment blocks). In flat systems, there are minimum 200 to 300 houses. All the septic night soil collected is directly connected to sewerage or drainage. It will be polluting the surroundings. If you do bio gas plant, it not polluting. The outlet slurry from the bio gas plant is free from bad smell. That way it is useful. At the meantime the methane gas is used for lighting or any purpose or heating purpose also we use that."
20. Crane loading garbage in truck
21. Various of garbage-laden trucks leaving
Residents on a housing estate near Chennai in India are making use of their own human waste to power their streetlights.
The town administration in Thiruneermalai, Tamil Nadu, has set up a bio-gas plant that generates 3000 watts of electricity daily, enough to light five sodium vapour lamps and five strip lights for five hours a day.
Under this latest energy project, night soil collected from 240 houses of the Thiruneermalai housing estate is collected in a sump.
25 cubic metres of methane gas generated from the sludge is used to operate a generator.
The slurry obtained from the plant is odourless, thus posing no inconvenience to the residents.
When asked, residents said they were happy to generate their own electricity rather than depending on the local authorities.
While generators in the villages run on dual fuel - 80 per cent gas and 20 per cent diesel, the one in Thiruneermalai runs exclusively on bio-gas.
The town administration is now also considering the use of animal waste.
the bio-gas plant was designed by A Mohan who explains that the system is best suited for apartment blocks which can provide a captive source of raw material for the plant. It also helps provides an eco-friendly solution to the problem of sewage disposal.
Mohan is currently working on solid waste management for the town's rubbish dump.
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