If we manage our household waste and industrial waste, we can save our

1.	If we manage our household waste and industrial waste, we can save ourselves from pollution to considerable extent. By doing so, we will not only save our self from pollution but in a number of cases, these wastes can be used for productive purposes. (i) How should we manage our house hold waste so that it causes no pollution and also some of it can be put to useful purposes? (ii) Industrial waste should not be thrown into the river,sea,etc.as it cause water pollution Suggest two method s to dispose industrial waste so that it causes no pollution and instead it becomes useful. (iii) How the biological waste of the hospitals should be handled which runs into tonnes? Give the merits and demerits of the method used. (iv) Give at least three examples where industrial waste is being utilized for productive purposes.
Answer» (i) we should keep garbage bins in our house, one for recyclables waste and other for non recyclable waste. The recyclable waste like plastic, broken glass, scrap iron, used paper, etc.should be sold to the vendor who in return tell of the factory for reproduction. The non recyclable waste should be picked up by the municipal van which in turn should dump the biodegradables waste into pits so that it is converted into manure. (ii)(a) Burning and incineration: The combustable industrial waste should be burnt at a far off place so that it is reduced to ash which can be used as a land filling material. (b) Dumping: The biodegradable waste including sewage sludge and waste of chemical industries containing compounds of nitrogen and phosphorous should be dumped into the land so that with the passage of time, it is converted into manure. (iii) The best method to decompose the hospital waste is burning and incineration as the hospital waste contains a number of chemical compounds like polychlorinated diphenyls which at high temp. Breaks into simple harmless products. The disadvantages of this method is that if the combustion is incomplete, the products formed may be toxic (iv) (a) Fly ashes produced by combustion of industrial waste is used in the cement industry. (b) The plastic waste is being converted into fuel which has high octane number. It does not contain any lead. It is known as green fuel. (c) The biodegradable waste can be used for production of electricity. For this purpose, the waste is cultured with suitable bacteria, As a result, methane gas is produced, called bio gas. The bio gas is producing electricity whereas the left out material is used as manure.

If we manage our household waste and industrial waste, we can save ourselves from pollution to considerable extent. By doing so, we will not only save our self from pollution but in a number of cases, these wastes can be used for productive purposes. (i) How should we manage our house hold waste so that it causes no pollution and also some of it can be put to useful purposes? (ii) Industrial waste should not be thrown into the river,sea,etc.as it cause water pollution Suggest two method s to dispose industrial waste so that it causes no pollution and instead it becomes useful. (iii) How the biological waste of the hospitals should be handled which runs into tonnes? Give the merits and demerits of the method used. (iv) Give at least three examples where industrial waste is being utilized for productive purposes.

Answer»

(i) we should keep garbage bins in our house, one for recyclables waste and other for non recyclable waste. The recyclable waste like plastic, broken glass, scrap iron, used paper, etc.should be sold to the vendor who in return tell of the factory for reproduction. The non recyclable waste should be picked up by the municipal van which in turn should dump the biodegradables waste into pits so that it is converted into manure.

(ii)(a) Burning and incineration: The combustable industrial waste should be burnt at a far off place so that it is reduced to ash which can be used as a land filling material.

(b) Dumping: The biodegradable waste including sewage sludge and waste of chemical industries containing compounds of nitrogen and phosphorous should be dumped into the land so that with the passage of time, it is converted into manure.

(iii) The best method to decompose the hospital waste is burning and incineration as the hospital waste contains a number of chemical compounds like polychlorinated diphenyls which at high temp. Breaks into simple harmless products. The disadvantages of this method is that if the combustion is incomplete, the products formed may be toxic

(iv) (a) Fly ashes produced by combustion of industrial waste is used in the cement industry.

(b) The plastic waste is being converted into fuel which has high octane number. It does not contain any lead. It is known as green fuel.

(c) The biodegradable waste can be used for production of electricity. For this purpose, the waste is cultured with suitable bacteria, As a result, methane gas is produced, called bio gas. The bio gas is producing electricity whereas the left out material is used as manure.

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