Question

L EQU'AR ondacton 44 wene rae of beat trasder (V4) -the theal condactivary [W(m-K - the surtce ama perpendcutar to tasdet ( Coavection New. 25. A water sample has the following analvsis: Concentration (mg/L) 80 Atomicionic weight 40 Ca Mg Na K 30 72 24.4 23 39 35.5 6 100 201 162 SO, HCO, 96 61 Total hardness of this water is most nearly (as mg/L as CaCO): 22 mg/L mg/L mg/L mg/L mg/L 479 344 a b 223 c. d. 186 110 e, other, write your answer f Total carbonate hardness is most nearly (as mg/L as CaCO): 23. mg/L mg/L mg/L mg/L mg/L other, write your answer 479 344 a. b. 223 c. 186 133 e. f. 24-25. A rural community of 20,000 persons generates solid waste at an average rate of 7 lbs per person per day. A 20-acre landfill site (fill area) is available. Compacted density of solid waste: 1,200 lb/yd Uncompacted density of solid waste: 200 Ib/yd Cover-to-waste ratio: I to 4 1 acre 43.560 ft I yard 3 ft 24. Compaction ratio of the waste is: a b. 4 3 c. 0.33 0.17 other, write your answer e. f. Air space available is 0.5 million cubic yards for filling after liner and cap is accounted for. Estimated useful life of the landfill (in years) if the cover:waste ratio is 1:4 25. 41.5 24.2 a. b. 12.0 9,4 3.5 c. d. e. f. other, write your answe r

Answer 1

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TO1a haudness O Nater 22 TOHau tIudness is cloe t6 Caiciom & Magnes [equivaient HIOanesS Neig ob caa eqvalent noeight Ob Ca2 Caco 3 equvate n Neignt Caco3 equiralent noerght ob 4 30 SO =322asglL Ob Cacor 0 equivalent. A1Omic ei Neight eight LAcase Naiency Bicaubonaie Auralinity weight 23 =>AIcauinity concentrotion oh Bicarbonate equivare ent Neign equivalent weight ob Bicaubonate cacoz 162 xS6 6 1 133 MgIL ob Caco3 13238 91& eH Caubonate hauolnes AIKaunit4 n AI6Cui niy7 T01au Handness Carbona+e hardnesS TO 10u HOudness

Here oukalinity TOHau HCuaness FHence aurauiniY Caub0nate HCudness 133 Mg8 O Caco3 Compaction Roatio Compacte d alensHY Ob 40ua aste ncompaciecl aiensty 12C0 Option a) is the aniwer. 2s) 1eauly 3aste Produ ction: 20,G00 メマ×365 = S.IY1Ob Caver o aste Ratio- Height ob Cover Height Ob waste Cuuspace arau lable TOIau =0SAIOYO lacie- 43S60 ft anea= u3560 KO L 1 acue 48 3S16 ya 20 acre 96303 2ya3 Hence

11eit ot Citt +Cover = N01ume ob ace ir Area ob tana biu 0.5X106 96703 2 SIRYaud Height ob aste x(Heighi Ob f Cove) ht sing Ranio = KS-1 NolLUme for h aste TOTar auea x 9o 44 801 003517C compacied NON u2503 33ya3 S11XI07 Ob Naste- 1eaus tiU i+ i be havia CapacHy to acid hOaste NO1ome toroasto yecnly volume 400 35) 42503 33 e 9.u4e u