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태임 차
7 years ago
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1 北地区青少年境研会 Международный детский симпозиум по проблемам экологии региона Северо-Восточной Азии.

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15 . (Nature) % % , 500 2kg

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24 . COD COD., KMnO4.. COD mg/l....? (a) COD(mg/Lppm) (b) (a)(b)

25 COD 1ppm 3ppm 5ppm 10ppm.,.,.,.,. ph., ph=7,,.,..,,. COD ph. 20. ph. ph ph 23 ph ph ph ph 68, 29

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27 Water as a Resource

28 Water as a Resource When we need, Where we need, The necessary quantity of water and The necessary quality of water is required.

29 Today s Lecture Water Quantity Water Quality

30 Water Quantity Water Planet (Total quantity of water on the earth) km 3 (1.4billion km 3 ) (Sea water) (Water supply by precipitation) km 3 / (0.11million km 3 /year) (Evaporation) km 3 / (Available Water) km 3 /

31 Available water is based on the water quantity of precipitation minus that of evaporation. (World average) /person/day /person/day (Plenty of water)

32 Available water /person/day (Serious water),,,, (Shandong) (Jiangsu) /person/day (Chronic water shortage),,, (Liaoning) /person/day (Partial water shortage could happen),,, /person/day (Plenty of water),,,,. (In many regions, sufficient water can not be utilized.

33 (Available water)

34 (Precipitation) Korea) (Seoul) (China) ) (Japan) (Toyama)

35 Current Status of Water Resources and Usage in Japan (Home use) (Industrial water) (Agricultural water) TOTAL (86 billion m 3 )

36 Current Status of Water Resources and Usage in Japan (Home use) /person/day (Industrial water) /person/day (Agricultural water) /person/day TOTAL /person/day Available water) /person/day

37 Concept of Indirect Water (Water necessary for producing import food) (Corn) (Wheat) (Beef)

38 (Import of the indirect water in Japan from the world) 74.4billion m 3 /year

39 Water Import).

40 Quantity of the Direct Usage and the Indirect Usage of Water (Direct usage) /person/day (Indirect usage) /person/day (Total) /person/day

41 (Our modern life is supported by enormous amount of water.) /person/day for drinking water Thousand-fold quantity of water is required for our lives.

42 Global Circulation of Water Rain Forest River Sea Evaporation Rain

43 A role of the forest: To smooth the flow in a flood.

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45 Water Quality) COD (Chemical Oxygen Demand) : SS (Suspended Solid) : T-N (Total Nitrogen) T-P (Total Phosphate) Eutrophication

46 Eutrophication led to a red tide in Japan.

47 (The concentrations of pollutants from our life.)

48 (The performance of the sewage treatment system)

50 Purifying chamber

51 (Biological treatment process) Microorganisms working in the sewage treatment system.

52 (What should we do for preserving water quality?) No leftovers. Do not pour the garbage away into the sewage. Clean net Use a clean net.

53 ( ) Do not use a garbage-disposal. Do not pour oil away to the sewage.

54 , Proper use of detergent and shampoo.

55 The effect of the actions.

56 Think globally Act locally

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