16.6.5 Some Developed Techniques for Treatment of Tannery
Effluents
In recent time, some techniques have been proposed for effective treatment of
tannery effluent. Some of them are as follows:
• Application of low-cost absorbent for mitigation of pollution caused by tannery
effluents in water (Mottalib et al. 2014).
• Treatment of tannery effluents must be simple and effective (Alvarez et al. 2004).
• Characterization of tannery effluents (beam house) and study of chromium
recovery by water hyacinth (Panov et al. 2003).
• Exhausted chrome tanning solution regeneration method (Usha et al. 2017).
• Application of gamma radiation for treatment of wastewater from leather industry
(Fettig et al. 2017).
• Use of membrane bioreactor for treatment of wastewater from leather industry
(Yusuf 2018).
• Nonconventional application of basic chromium sulphate for wet blue production
(Muralidhara et al. 1982).
16.6.6 Tannery Byproduct
Apart from principal product, if we are able to produce some product which has
utility to us, it is known as byproduct. In case of tannery some solid waste are
produced during processing of skins, as well as in trimming and fleshing process are
termed as tannery byproducts.
16.7 Conclusion
Tannery operation is growing rapidly due to its application in the leather manufacturing which acts as a source of foreign exchange. But at the same time, it is imparting a
huge burden on environmental agencies to treat them due to its potential to pollute
the environment and its belongings. Complex characteristics, such as COD, BOD,
chromium, sulphide, suspended matters, and heavy metals, are the main reasons
because of which there is difficulty in treating waste associated with tanneries. A
series of different methods have been used worldwide, but only few of them have
given fruitful results. Efficiency of these methods can be improved by using them in
combination of one another, as compared with the application of individual method.
To stop tannery operation for the sake of our environment is not the solution. As it
is possible to reduce the pollution potential of the waste effluent below a level so that
it can’t create a disastrous situation for its inhabitants and provide a safe
16 Environmental Impact and Treatment of Tannery Waste
591
Effluents
In recent time, some techniques have been proposed for effective treatment of
tannery effluent. Some of them are as follows:
• Application of low-cost absorbent for mitigation of pollution caused by tannery
effluents in water (Mottalib et al. 2014).
• Treatment of tannery effluents must be simple and effective (Alvarez et al. 2004).
• Characterization of tannery effluents (beam house) and study of chromium
recovery by water hyacinth (Panov et al. 2003).
• Exhausted chrome tanning solution regeneration method (Usha et al. 2017).
• Application of gamma radiation for treatment of wastewater from leather industry
(Fettig et al. 2017).
• Use of membrane bioreactor for treatment of wastewater from leather industry
(Yusuf 2018).
• Nonconventional application of basic chromium sulphate for wet blue production
(Muralidhara et al. 1982).
16.6.6 Tannery Byproduct
Apart from principal product, if we are able to produce some product which has
utility to us, it is known as byproduct. In case of tannery some solid waste are
produced during processing of skins, as well as in trimming and fleshing process are
termed as tannery byproducts.
16.7 Conclusion
Tannery operation is growing rapidly due to its application in the leather manufacturing which acts as a source of foreign exchange. But at the same time, it is imparting a
huge burden on environmental agencies to treat them due to its potential to pollute
the environment and its belongings. Complex characteristics, such as COD, BOD,
chromium, sulphide, suspended matters, and heavy metals, are the main reasons
because of which there is difficulty in treating waste associated with tanneries. A
series of different methods have been used worldwide, but only few of them have
given fruitful results. Efficiency of these methods can be improved by using them in
combination of one another, as compared with the application of individual method.
To stop tannery operation for the sake of our environment is not the solution. As it
is possible to reduce the pollution potential of the waste effluent below a level so that
it can’t create a disastrous situation for its inhabitants and provide a safe
16 Environmental Impact and Treatment of Tannery Waste
591