Central Leather Research Institute (CLRI) has developed an indigenous technology to treat waste water from textile and leather industries, said G. Sekaran, Chief Scientist and Head, Environmental Technology Division, CLRI-CSIR, Chennai.
Speaking on `Advanced Industrial Waste Water Treatment’ at a workshop on nano-materials, he said most of the areas around textile and leather industries have been contaminated with dyes and cleaning chemicals.
The workshop was organised by the Department of Physics and Abraham Panampara Research Centre of Sacred Heart College, Tirupattur, in view of National Science Day. It was sponsored by Council of Scientific and Industrial Research (CSIR), New Delhi. At the workshop, he shed light on effective methods to overcome the problem to help in achieving clean and healthy environment.
During his presentation, Mr. Sekaran explained the features of Chemo-Autotrophic Activated Carbon Oxidation (CAACO) System for treatment of waste water. The technology had bagged the national technology award.
Developed by CLRI, it is an indigenous technology with all its components available in the country and required less land as it involves operation of three units against the conventional technology, he said . It also had less electrical and mechanical equipment – two transfer pumps and an air blower for supplying air.
The other advantages of the technology was that it required one hour while conventional technology needed 24 to 36 hours and also had less power consumption, he said in his presentation.
In addition, the system was inbuilt with micro and macro nutrients and had no biomass production. The treated waste water met standards prescribed by the pollution control authorities and hence, tertiary treatment was not required, he observed.
Nanomaterials and their potential applications were elaborately discussed at the multi-disciplinary workshop on ‘The Role and Importance of Nanomaterials in Energy and Environmental Sectors’ held on Thursday.
In his presentation on Fuel Cells in Alternate Energy, B. Viswanathan, Director of National Centre for Catalysis Research, Indian Institute of Technology-Madras said, “Nanomaterials is not new. We are talking about it today as we are able to see it.”
He traced the dimensions of energy problem from the international economic and strategic problem during 1930-1970, security problem with the Arab Embargo and Iranian revolution in 1970’s to environmental problems, acid rain, coal burning and climate change in 1990’s.
He noted that the technology for oil and gas production have improved immensely in the last 20 years. “Natural gas is emerging as an internationally traded commodity,” he added. Speaking about energy security in India, he said, “Commercial energy demand will grow 4.5 per cent per annum till 2020. Hence, there will be growing gap between demand and supply of commercial energy with increasing dependence on imported oil.”