(Manajemen TL) What? Environmental Indices Why? Environmental Indices. Benefit?

Transkripsi

1 Environmental Indices (Manajemen TL) What? Environmental Indices Why? Environmental Indices Benefit?

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3 Role of Index (Water Quality) WQI numerically summarizes the information from multiple water quality parameters into a single value The single value can be used to comparedata from several sites It can be used to look at trends over time on a single site

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8 Quadrant Analysis 15 Nitrate-N Conce entration (Normalize ed) Quad 2 Quad 3 PRIORITY? -10 Quad 1 Quad 4-15 Flow (Normalized)

9 Impact Population Size Sub Catchment-1 (SC-1) SC-2 WWTP WQ? River SC-3 SC-3 NEW

10 Impact Population Size 5 DO Concentratio on (mg/l) DO Population size (x1000)

11 Total Maximum Daily Load (TMDL) When a lake or stream does not meet WQ Standard, a study must be completed to determine the amount of a pollutant that can be put in a waterbody from point sources and nonpoint sources and still meet WQS. A TMDL is used as a short hand acronym to describe the process used to determine how much pollutant load a lake or stream can assimilate

12 TMDL (continued) A TMDL is a written, quantitative assessment of WQ problems and contributing pollutant sources. It specifies the amount of pollutant reduction necessary to meet WQ Standards, allocates the necessary pollutant limits among the various sources in the watershed and It provides a basis for taking actions needed to restore waterbody.

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22 Parts of the Water Quality Index Q-Value-indication of water quality relative to 100 of one parameter Weighting Factor-sets the relative importance of the parameter to overall water quality

23 Q Value The Q-Value is an indication of how good (or bad) the water quality is relative to one parameter. 100 = Very Good Q = 50 Medium Q = 25 Q = 75 Very Very Good 1 = Very Bad Q = 0 Bad Q = 100

24 ph Q-Graph and Q-Table ph Q-Value Q-Value ph Q-Values ph

25 E.coli Q-Graph & Q-Table E. coli Q-Value Q-Value E. coli Q-Values E. coli (CFU/100 ml)

26 Weighting Factors DO 0.17 ph 0.11 E. coli 0.16 Turbidity NO3 T Phos DO E. coli Temp 0.10 Turbidity 0.08 T Phos 0.10 NO Temp BOD ph BOD 0.11 Total Solid 0.07 Total 1.00

27 WQI Interpretation Water Quality Index Range Water Quality Rating Excellent Good Medium Bad 0-24 Very Bad

28 Example WQI Calculation Parameter Units Result Q-Value Weight Factor Parameter Index DO % Sat % ph ph units E. Coli CFU/100 ml Temp deg C Turbidity NTU T Phos mg/l P NO3 mg/l N BOD mg/l Total Solid 0.7 Total (?) Quality Rating = WQI = 69.2 MEDIUM

29 Example WQI Calculation Parameter Units Result Q-Value Weight Factor Parameter Index DO % Sat % ph ph units E. Coli CFU/100 ml Temp deg C Turbidity NTU T Phos NO3 BOD Total Solid mg/l P mg/l N mg/l Total WQI = Quality Rating =

30 Adjusting for Missing Data When a parameter is missing, the sum of the weighting factors that have data can be used to adjust the WQI Sum of the Parametric Index Values is divided by the sum of the weighting factors that have data.

31 Calculation with Missing Parameter Parameter Units Result Q-Value Weight Factor Parameter Index DO % Sat % ph ph units E. coli CFU/100 ml Temp deg C Turbidity NTU T Phos mg/l P NM Missing data NO3 mg/l N BOD mg/l Total Quality Rating = WQI = 71.6 GOOD

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33 Environmental Indices (Manajemen TL) N T S Structure of Environmental Indices Mathematical structure A Two-step Calculation Sub-Index calculation Agregation C O N T E NTwo general forms: increasing & decreasing index

34 Environmental Indices (Manajemen TL)

35 Environmental Indices (Manajemen TL) N T S Sub-Index - Linear Function: Increasing & Decreasing, Segmented - Non-linear Function: Implicit & Explicit, Exponential, Segmented - Step-by-step Function C O N T E N- Linear Function:

36 Environmental Indices (Manajemen TL) C O N T E N T S 1. Penjumlahan tanpa pembobotan 2. Penjumlahan dengan pembobotan 3. Root-Sum-Power 4. Root-Mean-Square 5. Operator Maksimum 6. Perkalian dengan Pembobotan 7. Operator Minimum

37 Environmental Indices (Manajemen TL) S1. Penjumlahan tanpa pembobotan C O N T E N T 2. Penjumlahan dengan pembobotan 3. Root-Sum-Power 4. Root-Mean-Square 5. Operator Maksimum 6. Perkalian dengan Pembobotan dimana atau dimana 7. Operator Minimum

38 Function Curves Linear (Increasing) Linear (Decreasing) C O N T E N T S Segmented Linear Non-linear (Explicit) Non-linear (Implicit) Non-linear (Exponential) Non-linear (Segmented) Step-by-step Function

39 Environmental Indices (Manajemen TL) 1. Penjumlahan tanpa pembobotan C O N T E N T S

40 Environmental Indices (Manajemen TL) 1. Penjumlahan tanpa pembobotan C O N T E N T S

41 Environmental Indices (Manajemen TL) 1. Penjumlahan dengan pembobotan C O N T E N T S

42 Environmental Indices (Manajemen TL) 3. Root-Sum-Power C O N T E N T S

43 Environmental Indices (Manajemen TL) 4. Root-Mean-Square C O N T E N T S

44 Environmental Indices (Manajemen TL) 5. Operator Maksimum C O N T E N T S

45 Environmental Indices (Manajemen TL) 6. Perkalian dengan Pembobotan C O N T E N T S

46 7. Operator Minimum Environmental Indices (Manajemen TL) C O N T E N T S

47 Environmental Indices (Manajemen TL) S1. Penjumlahan tanpa pembobotan C O N T E N T 2. Penjumlahan dengan pembobotan 3. Root-Sum-Power 4. Root-Mean-Square 5. Operator Maksimum 6. Perkalian dengan Pembobotan dimana atau dimana 7. Operator Minimum

48 Indeks Standar Kualitas Udara (ISPU) (Air Pollution Standard Index - ISPU) The use of Environmental Index in Air Pollution C O N T E N T S

49 Number and Category of ISPU C O N T E N T S Indeks Standar Kualitas Udara (ISPU) (Air Pollution Standard Index - ISPU)

50 Indeks Standar Kualitas Udara (ISPU) (Air Pollution Standard Index - ISPU) C O N T E N T S Number and Category of ISPU

51 Indeks Standar Kualitas Udara (ISPU) (Air Pollution Standard Index - ISPU) N T S C O N T E N Functional Curve

52 Environmental Index The use of Environmental Index in Water Pollution C O N T E N T S

53 Environmental Index The use of Environmental Index in Water Pollution C O N T E N T S

54 Environmental Index The use of Environmental Index in Water Pollution C O N T E N T S

55 Environmental Index The use of Environmental Index in Water Pollution C O N T E N T S

56 Environmental Index The use of Environmental Index in Water Pollution C O N T E N T S

57 Environmental Index The use of Environmental Index in Water Pollution C O N T E N T S

58 Environmental Index The use of Environmental Index in Water Pollution C O N T E N T S Parameter Konsentrasi (Ci) Bakumutu (Lix) TSS DO 2 6 ph Fecal coli BOD 8 2 Se 0,07 0,01 Ci/Lix (Ci/Lix)baru