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Kanpur leather sector gets world's first green technology
21 Jun '11
2 min read
In a wake to conserve River Ganga against pollution, Union Minister of State for Environment and Forests Jairam Ramesh last week introduced green technology method at Common Effluent Treatment Plant in Jajmau in Kanpur.
The new technique is a mode of conversation of hides without use of salt through lyophilisation, and hence helps in preventing the water that the leather processing units emit from polluting the river. Kanpur is the world's first city where this technology has been launched.
The Minister while launching the new technology informed that, tanneries situated along the Ganga river basin at Unnao, UP, Jajmau, Banthat and West Bengal each day process about 2,500 metres of hides while using around 1,500 mt of salt. Around 90 percent of this 1,500 mt salt that is 1,350 mt makes its way into Ganga and groundwater, and thus pollutes and contaminates the river, he added.
Environment Ministry's Central Pollution Control Board (CPCB) has patented Lyophilisation which is an innovative technique which facilitates conservation of biodegradable material without use of salt. It works on the principle of sublimation, under which the water substance in the hide is sublimated into vaporized form under vacuum condition so as to make it stable and hence appropriate for storing at room temperature.
The tanneries included in the list of 17 segments of the industrial sector which generate maximum pollution and the conventional technique of hide preservation with use of common salt, emit high TDS during the process, which is a cause of concern. High TDS adversely affects the performance of the effluent treatment system and reduces efficiency of the effluent treatment as it gets degenerated.
The Minister said that with adoption of the lyophilisation technology the tanneries can choose to preserve hides without use of salt which would radically bring down the salinity levels in effluents.
The new technique is a mode of conversation of hides without use of salt through lyophilisation, and hence helps in preventing the water that the leather processing units emit from polluting the river. Kanpur is the world's first city where this technology has been launched.
The Minister while launching the new technology informed that, tanneries situated along the Ganga river basin at Unnao, UP, Jajmau, Banthat and West Bengal each day process about 2,500 metres of hides while using around 1,500 mt of salt. Around 90 percent of this 1,500 mt salt that is 1,350 mt makes its way into Ganga and groundwater, and thus pollutes and contaminates the river, he added.
Environment Ministry's Central Pollution Control Board (CPCB) has patented Lyophilisation which is an innovative technique which facilitates conservation of biodegradable material without use of salt. It works on the principle of sublimation, under which the water substance in the hide is sublimated into vaporized form under vacuum condition so as to make it stable and hence appropriate for storing at room temperature.
The tanneries included in the list of 17 segments of the industrial sector which generate maximum pollution and the conventional technique of hide preservation with use of common salt, emit high TDS during the process, which is a cause of concern. High TDS adversely affects the performance of the effluent treatment system and reduces efficiency of the effluent treatment as it gets degenerated.
The Minister said that with adoption of the lyophilisation technology the tanneries can choose to preserve hides without use of salt which would radically bring down the salinity levels in effluents.
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