Page 105 - Materials Chemistry, Second Edition

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Sustainable Industrial Design and Waste Management
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Planned for changes:
• Reforming the collecting coil system from the insert valve to the
proportion valve thus reducing oil discharges.
• Replacing the burners with ones operating on oils or gases.

Cost/benefit analysis
The changes done to the factory revealed huge changes in the gas emissions
3
as 50.48 million m of the waste gas was reduced and there was a decrease of
45 tons in the discharge amount of wastewater. The changes that were imple-
mented directly in the short term would yield a decrease in waste gas “by
3
43.52 million m per year accounting for 9.53% of total waste gas emissions
and decrease waste water by 126 tons a year accounting for 12.1% of total waste
water discharges. If the mill would carry out the long-term options, the mill
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would decrease waste gas of 60 million m per year accounting for 13.3% of
annual total emissions and reduce waste water of 169 tons a year accounting
for 11.44% of annual total discharges” (Cleaner Production in China 2006).

Questions
1. Discuss the main obstacles for implementing cleaner production tech-
niques, and the methodology to remove such obstacles.
2. Does cleaner production always pay? Why? And how?
3. What is the difference between good housekeeping and better process
control as two major techniques for cleaner production?
4. What is the role of the government to promote cleaner production?
5. Discuss different mechanisms to encourage/enforce the general manager/
investor to implement CP within their facilities.
6. What is the difference between cleaner production and end-of-pipe
treatment?
7. Does cleaner production require high technology? Explain.