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a case study of municipal solid waste management in the ... - lumes

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Page 39rest <strong>of</strong> sewerage water, which means <strong>the</strong> dean standard <strong>of</strong>water<strong>waste</strong> water treatment plant is just reach <strong>the</strong> gray water's.after be<strong>in</strong>g treated <strong>in</strong>Therefore, if Ch<strong>in</strong>a had separately designed and built <strong>the</strong> collection systemspecifically for storm water, gray water and black water, <strong>the</strong> both <strong>in</strong>vestment andoperation costs <strong>of</strong><strong>waste</strong> water treatment would have been remarkable saved. But now,it seems too late to change <strong>the</strong> all system, <strong>the</strong> whole follow<strong>in</strong>g solutions have to basedon <strong>the</strong> exist<strong>in</strong>g system. From this lesson, Olle<strong>in</strong>spiration could be obta<strong>in</strong>ed that is<strong>municipal</strong> <strong>solid</strong> <strong>waste</strong> treatment should not repeat <strong>the</strong> history <strong>of</strong> <strong>municipal</strong> <strong>solid</strong> <strong>waste</strong>treatment. Do not to mix <strong>the</strong> all k<strong>in</strong>ds <strong>of</strong> <strong>waste</strong> or to f<strong>in</strong>d <strong>the</strong> solution for <strong>the</strong> mixed<strong>waste</strong>! The wise choices are to separate <strong>waste</strong> at source and f<strong>in</strong>d solutions for everyspecific <strong>waste</strong>. These would avoid leav<strong>in</strong>g countless troubles for future generations.9.3 The Significant Mean<strong>in</strong>g <strong>of</strong> Energy Recover <strong>in</strong> Ch<strong>in</strong>aIn Ch<strong>in</strong>a, coal rema<strong>in</strong>s <strong>the</strong> dom<strong>in</strong>ant position <strong>in</strong> <strong>the</strong> primary energy supply andconsumption <strong>of</strong> Ch<strong>in</strong>a. Coal consumption accounted for approximate 70% <strong>of</strong> totalenergy consumption <strong>in</strong> 1996 (Ch<strong>in</strong>a Statistical Yearbook, 1997). So, energy recoverfrom <strong>waste</strong> does not only mean to save natural resource but to replace coal by us<strong>in</strong>gbiogas as energy source and to avoid <strong>the</strong> coal relevant environmental pollution,especially greenhouse effect produced by COz.10. CONCLUSIONSThe <strong>municipal</strong> <strong>solid</strong> <strong>waste</strong> <strong>management</strong> situation <strong>in</strong> J<strong>in</strong>gshan is critical. To reconstructcrude dump<strong>in</strong>g <strong>in</strong>to sanitary landfill and to <strong>in</strong>stall biogas <strong>waste</strong> treatment plant mightbe suitable technical solutions for J<strong>in</strong>gshan based on this prelim<strong>in</strong>ary <strong>study</strong>. Thesuggested <strong>in</strong>tegrated approach is necessary and should be implemented step by step.Although, <strong>the</strong> obstades <strong>of</strong> shortages <strong>of</strong> f<strong>in</strong>ance and environmental awareness areexist<strong>in</strong>g, this approach still have chance to be carried out <strong>in</strong> J<strong>in</strong>gshan.

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