X噂k"8亥w"x q"fcq"8瓜pi"v瑛"6,4 -9.8"*ucw"mjk"8«"e„"ej¤o"PcJEQ3) pH 8亥w"tc" e栄c" 4" d吋" rj違p" 泳pi" vtqpi" swƒ" vt·pj" x壱p" j pj" nw»p" fw{" vt·" 荏" o泳e" 8.;-9.80" A¤{" n " mjq違pi"rJ"vj ej"j嬰r"ejq"swƒ"vt·pj"m鵜"mj 0"U詠"ej‒pj"n羽ej"rJ"e栄c"4"d吋"GIUD"3"x "4" mj»pi"e„"#"pij c"pjk隠w"nk‒p"swcp"8院p"jk羽w"sw違"z穎"n#"e栄c"o»"j·pj0"Swcp"vt丑pi"n "e違" jck"o»"j·pj"8隠w"jq衣v"8瓜pi荏"rJ鰻p"8鵜pj0"
O瓜v" pj壱p" 8鵜pj" swc" pijk‒p" e泳w" p {" n " 8瓜" rJ" e栄c" 8亥w" x q" " mj»pi" vjc{" 8鰻k" pjk隠w"swc""eƒe"pi {"x壱p"j pj0"A¤{"n "o瓜v"8員e"vj́"e栄c"p逢噂e"vj違k0"Fq"8„."xk羽e"mk吋o" uqƒv"rJ."e pi"pj逢"8k隠w"ej雨pj"rJ"8嘘k"x噂k"p逢噂e"vj違k"p {"n "8挨p"ik違p0"Vjgq"8„."8k隠w" mk羽p" 8瓜" mk隠o" vtqpi" p逢噂e" u胤" fw{" vt·" 荏" pi逢叡pi" vj医r" vjgq" m院v" sw違" pijk‒p" e泳w" e栄c"
Gerardi 2003 là 1000-3000 mgCaCO3/l y = 0.7153x + 0.0605 R² = 0.9252 0 1 2 3 4 5 6 7 0 2 4 6 8 V嘘e "8瓜" " kgCOD/m 3 .ngà y Ra EGSB 1 y = 0.6654x + 0.1405 R² = 0.9428 0 2 4 6 8 Ra EGSB 2
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 48
Hình 4-4<"rJ"vtqpi"swƒ"vt·pj"x壱p"j pj
4.2.2.2. S詠vjc{"8鰻k"8瓜 ki隠m trong th運i gian v壱n hành
X噂k"8瓜"mk隠o"fw{"vt·"荏"pi逢叡pi"vjgq"mjq違pi"3222 mgCaCO31n"."fcq"8瓜pi"v瑛"822" -3422" 8亥w" x q." m院v" sw違" 8瓜" mk隠o" fw{" vt·" 荏" 4" d吋" GIUD" p茨o" 荏" mjq違pi"600-1100. Mj»pi"e„"u詠"vjc{"8鰻k"n噂p."8k隠w"p {"e pi"8違o"d違q"ejq"8瓜"rJ"e栄c"o»"j·pj"fw{"vt·"荏" mjq違pi"v嘘k"逢w"ejq"xk"ukpj"x壱v"m鵜"mj "jq衣v"8瓜pi0"X "e pi"v逢挨pi"v詠"rJ."8瓜"mk隠o"e栄c"4" o»"j·pj"mjƒe"pjcw"mj»pi"e„"#"pij cx隠"jk羽w"sw違0"Ak隠w"p {"e„"vj吋"m院v"nw壱p."o»"j·pj" GIUD" z穎" n#" p逢噂e" vj違k" ik院v" o鰻" e„" vj吋" jq衣v" 8瓜pi" 欝p" 8鵜pj" x噂k" 8瓜" mk隠o" 822-1000
mgCaCO3/l 4 4.5 5 5.5 6 6.5 7 7.5 8 0 20 40 60 80 100 120 140 pH Days Vào EGSB 1 EGSB 2 0,5 1 2 4 8
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 49 Hình 4-50"A瓜"mk隠o"vtqpi"swƒ"vt·pj"x壱p"j pj 4.2.2.3. S詠 thc{"8鰻i n欝pi"8瓜 VFA X噂k"eƒe"m院v"sw違"rJ."8瓜"mk隠o"鰻p"8鵜pj"jq衣v"8瓜pi"e栄c"d́p"m鵜"mj "vj·"ej雨"vk‒w" XHC"e pi"p茨o"vtqpi"mjq違pi"ik噂k"j衣p"鰻p"8鵜pj0 D違pi4-3: M院v"sw違"XHC"e栄c"4"d吋"vtqpi"swƒ"vt·pj"x壱p"j pj< Ngày V違k" vt丑pi" OLR VFA (mg/l) A瓜"mk隠o V雨"n羽 x壱p"
hành EGSB 1 EGSB2 EGSB 1 EGSB2 EGSB 1 EGSB2
5 0,5 77 153 1000 1000 0,08 0,15 39 1 43 111 960 1000 0,04 0,11 48 2 59 116 1100 900 0,05 0,13 52 2 116 111 960 880 0,12 0,13 80 2 150 115 800 750 0,19 0,15 95 4 116 143 950 880 0,12 0,16 109 4 115 77 800 800 0,14 0,10 124 4 100 134 900 850 0,11 0,16 131 8 160 88 900 900 0,18 0,10 140 8 137 146 800 860 0,17 0,17 0 200 400 600 800 1000 1200 1400 0 20 40 60 80 100 120 140 m gCaCO3/L Days Vào EGSB 1 EGSB 2 0,5 1 2 4 8
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 50
pj英pi"j羽"u嘘"ik¿r"8ƒpj"ikƒ"pjcpj"8k隠w"mk羽p"x壱p"j pj"8cpi"fk宇p"tc"e栄c"swƒ"vt·pj"ukpj" j丑e"m液"mj "vtqpi"d吋"GIUD30"H羽"u嘘"v雨"n羽"8逢嬰e"rj¤p"ejkc"8ƒpj"ikƒ"pj逢"ucw [53] :
- XHC1VC">2.37<"J亥w"j院v"eƒe"j嬰r"ej医v"j英w"e挨"8逢嬰e"ejw{吋p"j„c"vj pj"eƒe"czkv" j英w"e挨"x "ucw"8„"d鵜"ejw{吋p"j„c"vj pj"mj "EJ60"
- 2.37">"XHC1VC">"2.4<"Swƒ"vt·pj"x壱p"j pj"rj違k"vjgq"f k"m悦."d吋"z穎"n#"x瑛c" ej衣o"pi逢叡pi"d鵜"swƒ"v違k0"
- 2.4">"XHC1VC">"2.47"<"D吋"rj違p"泳pi"8«"d鵜"swƒ"v違k."v泳e"n "v雨"n羽"ik英c"j o"n逢嬰pi" ej医v"j英w"e挨"x "u嘘"n逢嬰pi"xk"mjw育p"m液"mj "荏"o泳e"ecq0"J羽"xk"ukpj"x壱v"m液"mj "mj»pi"vj吋" ejw{吋p"j„c"j院v"eƒe"j嬰r"ej医v"j英w"e挨"vj pj"u違p"rj育o"mj "dkqicu"EJ60"
- VFA/TA > 0.47<"D吋"rj違p"泳pi"d鵜"czkv"j„c"*j„c"ejwc+0"V泳e"n "ej雨"e„"swƒ"vt·pj" czkv"j„c"z違{"tc"*v欝p"v衣k"czkv"j英w"e挨+."t医v"mj„"jq員e"mj»pi"z違{"tc"swƒ"vt·pj"ejw{吋p"j„c" thành CH4.
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Nhìn vào hình 4-8"vc"vj医{<"Ac"u嘘"eƒe"v雨"n羽"p {"p茨o"vtqpi"mjq違pi"2.37- 0,2. A¤{"n "f医w"jk羽w"v嘘v"ej泳pi"v臼"eƒe"ikck"8q衣p"e栄c"swƒ"vt·pj"m液"mj "8cpi"fk宇p"tc"鰻p" 8鵜pj0" X隠" jk羽w" uw医v" nq衣k" d臼" EQF." fq" 8員e" vj́" p逢噂e" vj違k" p欝pi" 8瓜" vj医r" *vtwpi" d·pj" mjq違pi"3222oi1n+."p欝pi"8瓜"UU"ecq"p‒p"8吋"xk羽e"z穎"n#"p逢噂e"vj違k"荏"v違k"vt丑pi"ecq"8”k" j臼k"xk羽e"ik違o"vj運k"ikcp"n逢w0 Xk羽e"ik違o"vj運k"ikcp"n逢w"p {"vj逢運pi"mflo"vjgq"swƒ"vt·pj" n逢w"p逢噂e"v衣k"d吋"ej泳c"p逢噂e"e医r"x q"u胤"pj臼."swƒ"vt·pj"czkv"j„c"z違{"tc" v"j挨p0 V衣k"v違k" vt丑pi":"kgCOD/m3.ngày, vj運k"ikcp"n逢w"n¿e"p {"ej雨"e”p"5"ik運."x "v雨"n羽"XHC1VC"n¿e" p {"n "mjq違pi"2.3- 2.3:"p茨o"vtqpi"mjq違pi"jq衣v"8瓜pi"鰻p"8鵜pj0"O»"j·pj"GIUD"x噂k" ikƒ"vj吋"RXC"ejq"vj医{"u詠"jq衣v"8瓜pi"鰻p"8鵜pj"pic{"e違"n¿e"vj運k"ikcp"n逢w"vj医r0"X "e pi" v衣k"v違k"vt丑pi"p {."vc"vj医{"o»"j·pj"GIUD"4"d·pj"vj逢運pi"8«"ik違o"jk羽w"uw医v"nq衣k"EQF" 8衣v"ecq"pj医v"ej雨"8衣v"83-89'."vtqpi"mjk"荏"o»"jkpj"GIUD"3"e„"vj吋"8衣v"v瑛"9:-85%, o瓜v"u詠"ej‒pj"n羽ej"t "t羽v0
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 51
Hình 4-6<"V雨"n羽"XHC1VC""x "jk羽w"uw医v"nq衣k"EQF
4.2.3. Aƒpj"ikƒ"ukpj"mj嘘i trong quá trình v壱n hành:
D違pi"6-4 ejq"vj医{."v衣k"vj運k"8k吋o"ew嘘k"v違k"2.7"n "v違k"ej衣{"vj ej"pijk."ONUU" 鰻p" 8鵜pj"荏"mjq違pi"32.5"ł2.4"i1n0 Eƒej"zƒe"8鵜pj"ukpj"mj嘘k"8嘘k"x噂k"d́p"e„"ikƒ"vj吋"RXC<"n医{"o磯w"vj吋"v ej"e亥p"zƒe" 8鵜pj"*72on+0"N丑e"n医{"rj亥p"RXC"tk‒pị"t欝k"fwpi"e挨"j丑e"*xq"o衣pj"ejq"8院p"mjk"j衣v" RXC"u衣ej"j院v"n噂r"d́p"dƒo"f pj+0"Ucw"8„"8go"pwpi"pj逢"d·pj"vj逢運pi"n逢嬰pg bùn tách tc"v瑛"RXC"x "n逢嬰pi"d́p"8«"n丑e"tc"荏"vt‒p0"Xk羽e"n医{"o磯w"vj詠e"jk羽p"mjk"vtqpi"o»"j·pj" 8«"8逢嬰e"zƒq"vt瓜p"8隠w"*fw{"vt·"d挨o"vw亥p"jq p+="
Ucw"vj運k"ikcp"x壱p"j pj"8院p"pi {"78"vj·"p欝pi"8瓜"mj»pi"vjc{"8鰻k"8ƒpi"m吋0"A院p" pi {":2"n "ew嘘k"ikck"8q衣p"v違k"vt丑pi"4 kgCOD/m30pi {."p欝pi"8瓜"ONUU"e„"u詠"v<pi" pj姻"8衣v"o泳e"32.:i1n"荏"GIUD"3."x "32.;"i1n"荏"GIUD"40"Ak隠w"p {"e„"vj吋"ik違k"vj ej"n " 荏"8k隠w"mk羽p"x壱p"j pj"d·pj"vj逢運pị"eƒe"{院w"v嘘"vj ej"j嬰r"ejq"swƒ"vt·pj"rjƒv"vtk吋p"e栄c" xk"ukpj"x壱v"m鵜"mj "8«"fw{"vt·."8欝pi"vj運k"e„"u詠"rjƒv"vtk吋p"ukpj"mj嘘k"e栄c"d́p"m鵜"mj 0 0 0.05 0.1 0.15 0% 20% 40% 60% 80% 100% 120% 0 20 40 60 80 100 120 140 J k羽 w" uw 医v Pi {"x壱p"j pj"
H% EGSB 1 H% EGSB 2 VFA/TA EGSB 1 VFA/TA EGSB 2
V雨 "n羽 "X HC 1A 瓜" mk 隠o "*V C +
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 52 Pi {"x壱p"j pj Ew嘘k"v違k" vt丑pi" OLR MLSS(g/l) EGSB 1 EGSB2 32 0,5 10,4 10,3 56 1 10,3 10,4 80 2 10,8 10,9 120 4 8,8 8,6 150 8 6,4 7,0
A院p" pi {" vj泳" 342" *ew嘘k" v違k" 6 kgCOD/m30pi {+" ONUU" ik違o" zw嘘pi" e”p" 荏" GIUD"3"x "4"v逢挨pi"泳pi"n ":.:i1n"x ":.8i1n0"E pi"v衣k"ew嘘k"m院v"vj¿e"x壱p"j pj."ONUU" v逢挨pi"泳pi"荏"o»"j·pj"GIUD"3"x "4"n "8.6"x "9.20"Pj逢"x壱{."8«"e„"u詠"o医v"ukpj"mj嘘k"荏" ikck"8q衣p"4"v違k"vt丑pi"6"x ":"kgCOD/m3.ngàỵ
E映"vj吋"n "jk羽p"v逢嬰pi"p鰻k"d́p"x "vt»k"d́p"荏"4"o»"j·pj"pj逢"j·pj"ucw<"
Hình 4-7: Jk羽p"v逢嬰pi"p鰻k"d́p"x "vt»k"d́p"荏"o»"j·pj"GIUD"荏"v違k"vt丑pi"6"x ":" kgCOD/m3.ngày V衣k"ew嘘k"v違k"vt丑pi"6"miEQF1o3.ngày V衣k"ew嘘k"v違k"vt丑pi":"miEQF1o3 .ngày kgCOD/m3.ngày D́p"e„"荏"8亥w"tc"4"o»"j·pj"GIUD" 1,2 1 2
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 53
8瓜pi"*vj運k"ikcp"mjq違pi"8"rj¿v+8逢嬰e"zƒe"8鵜pj"n "4.89o1j0"Vjgq"m院v"sw違"v pj tốn thì x壱p"v嘘e"ej違{"pi逢嬰e"mj»pi"vjc{"8鰻k"pjk隠w"荏"eƒe"v違k"vt丑pị"fq"8„"mj違"p<pip鰻k"d́p"fq" x壱p"v嘘e"ej違{"pi逢嬰e"ecq"n "mj»pi"e„0"E„"vj吋"ik違k"vj ej"n "fq"vj運k"ikcp"n逢w"vj医r."p逢噂e" vj違k"ej泳c"coqpkce"p欝pi"8瓜"ecq"x磯p"e”p"v欝p"v衣k"vtqpi"p逢噂e"vj違k"8亥w"x q."f磯p"8院p là 泳e"ej院"u詠"jq衣v"8瓜pi"xk"ukpj"f磯p"8院p"v·pj"vt衣pi"p {"[34].
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4.2.4. Aƒpj"ikƒ"x壱n t嘘c l逸ng c栄a 2 mơ hình EGSB
J衣v"RXC"e„"e医w"vt¿e"n厩"t厩pi"j·pj"v鰻"qpị"m ej"vj逢噂e"eƒe"n厩"t厩pi"mjq違pi"42" o"8逢嬰e"ej泳pi"okpj"t医v"rj́"j嬰r"8吋"d逸v"ik英"eƒe"xk"ukpj"x壱v"swc"pjk隠w"pijk‒p"e泳w" [5, 6]0"Vtqpi"uw嘘v"swƒ"vt·pj"vj "pijk羽o"mj»pi"e„"jk羽p"v逢嬰pi"vt»k"j衣v"RXC"tc"ej泳pi" v臼"t茨pi"j衣v"RXC"e„"vt丑pi"n逢嬰pi"vj ej"j嬰r."mj違"p<pi"n逸pi"v嘘v"x "e„"vƒe"f映pi"fw{"vt·" xk"ukpj"vtqpi"d吋"rj違p"泳pi0"N逢嬰pi"ukpj"mj嘘k"dƒo"vt‒p"j衣v"RXC"荏"ew嘘k"pijk‒p"e泳w" 8逢嬰e"zƒe"8鵜pj"n "2.:9"i"UU1i"RXC"xà 0,39 g VSS/g PVẠ
Vj詠e"jk羽p"zƒe"8鵜pj"v嘘e"8瓜"n逸pi"e栄c"eƒe"j衣v"RXC."d́p"j衣v"m鵜"mj 0 Ej丑p"eƒe"j衣v" d́p"x "j衣v"RXC"eƒe"m ej"vj逢噂e"mjƒe"pjcw"8吋"n o"vj "pijk羽o U穎"f映pi"嘘pi"8qpi" ejk隠w"f k"e瓜v"p逢噂e"n "100 eọ"vk院p"j pj"vj違"t挨k"t欝k"ijk"pj壱p"vj運k"ikcp"t挨k"zw嘘pi"8ƒ{. Zƒe"8鵜pj"x壱p"v嘘e"n逸pi"e栄c"j衣v"RXC"d茨pi"o»"j·pj"e„"j·pj"vt映"x噂k"8逢運pi"m pj"5 cm x "ejk隠w"ecq"100 eo"8逢嬰e"8鰻"8亥{"p逢噂e"oƒ{0"P逢噂e"oƒ{"8逢嬰e"f́pi"8吋"zƒe"8鵜pj"x壱v" v嘘e"n逸pi"x·"8瓜"rJ"x "n詠e"kqp"e栄c"p逢噂e"oƒ{" vj ej"j嬰r"ejq"o映e"8 ej"p {"x "m ej" vj逢噂e"j衣v"d́p"8栄"8吋"n o"ejq"ej¿pi"mj»pi"d鵜"違pj"j逢荏pi"d荏k"u泳e"e<pi"vj育o"vj医w" [54]. M厩k"j衣v"RXC"8逢嬰e"v pj"vj運k"ikcp"n逸pi"vtwpi"d·pj"荏"eƒe"8瓜"ecq"mjƒe"pjcw0"O厩k" nq衣k"vj詠e"jk羽p"32"n亥p"t欝k"n医{"ikƒ"vt鵜"vtwpi"d·pj0"M院v"sw違"8q"v嘘e"8瓜"n逸pi"vjgq"d違pi"ucw<
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 54 Nq衣k"j衣v PVA cĩ d=4mm D́p"j衣v"m鵜"mj " d=2mm D́p"j衣v"m鵜"mj "f?" 1mm V嘘e"8瓜"n逸pi trung bình (m/h) 173 90 56 X壱p"v嘘e"n逸pi"e栄c"j衣v"RXC"vtwpi"d·pj"n "373 o1ik運."ecq"j挨p"t医v"pjk隠w"uq"x噂k"x壱p"v嘘e" n逸pi"rj鰻"dk院p"e栄c"d́p"j衣v"e„"m ej"vj逢噂e"3"8院p"4"oo"荏"vj "pijk羽o"vt‒p"vj»pi"vj逢運pi" là 18 Ỵ72"o1ik運"[49] ej泳pi"v臼"j衣v"RXC"e„"mj違"p<pi"n逸pi"v嘘v"x "v益"vt丑pi"vj ej"j嬰r" 8吋"fw{"vt·"vtqpi"d吋."vtƒpj"jk羽p"v逢嬰pi"vt»k"d́p"tc"piq k0 X噂k"eƒe"v嘘e"8瓜"n逸pi"荏"d違pi" vt‒p"vj·"j亥w"j院v"eƒe"j衣v"p {"8隠w"n茨pi"荏"8ƒ{"e栄c"d吋.
4.2.5.Aƒpj"ikƒ"x壱n t嘘c dịng ch違{"pi逢嬰e"8嘘i v噂i lúc kh荏k"8瓜ng ch衣y thích nghi và t違k"vtqpi"dcp"8亥w"8嘘i v噂i mơ hình cĩ giá th吋 PVA:
X噂k"ikck"8q衣p"p {"vc"i丑k"ikck"8q衣p"3"x1?"3.89o1j"n "GIUD3"x "ikck"8q衣p"x壱p"j pj" e„"f”pi"ej違{"pi逢嬰e""x2=3m/h là EGSB2. Hai giai 8q衣p"p {"ej衣{"n亥p"n逢嬰v"mjƒe"pjcw" *ucw"mjk"o»"j·pj"e„"ikƒ"vj吋"8«"jq p"vj pj"ej衣{"x噂k"x壱p"v嘘e"3.89"o1j"vj·"vcpi"x壱p" v嘘e"n‒p"5"o1j+"0"Vc"vjw"8逢嬰e"eƒe"m院v"sw違"ucw< 60407030"Jk羽w"sw違"z穎"n#"EQF 0 200 400 600 800 1000 1200 1400 0 20 40 60 80 COD m g/l Ngày (a) kgCOD/m3.day Inf 1 EGSB 1 0,5 1 2
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 55
Hình 4-8: EQF"8亥w"x q"x "tc"荏"GIUD3 (a) và EGSB2 (b).
A嘘k"x噂kEQF"8亥w"x q"x "tc"荏"4"x壱p"v嘘e"m院v"sw違"pj逢"ucw<"e違"4"o»"j·pj"8隠w"x壱p"j pj"" 8亥w"x q"EQF"荏"ikck"8q衣p"v違k"vt丑pi"2.7"n 722ł322oi1n.";22ł372oi1n"v衣k"v違k"vt丑pi"3" và 2 ."vj運k"ikcp"n逢w"e pi"v逢挨pi"v詠"pjcw0"M院v"sw違"8亥w"tc"ucw"d吋"GIUD"e栄c"4"ikck" 8q衣p"p {"n "300±100mg/l. Mjq違pi"EQF">622oi1n"n "ej医r"pj壱p"8逢嬰e"vtqpi"eƒe" e»pi"vt·pj"z穎"n#"jk院w"mj "*cgtqvgp+"ucw"8„"8吋"z穎"n#"8衣vvk‒w"ejw育p"vj違k"tc0
0 200 400 600 800 1000 1200 1400 0 20 40 60 80 100 COD m g/l Ngày (b) Inf 2 EGSB 2 0,5 1 2 20% 40% 60% 80% 100% 0 7 14 21 28 35 42 49 56 63 70 77 84 91 J k羽 w" uw 医v "' Ngày Jk羽w"sw違"z穎"n#"EQF"荏"4"ikck"8q衣p EGSB 2 EGSB 1
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 56
So sánh 2 giai 8q衣p"*j·pj 4-9):
Ikck"8q衣p"8亥w"vk‒p"*2-52"pi {+<"8¤{"n "ikck"8q衣p"ej衣{"vj ej"pijk." vc"vj医{"jk羽w" sw違"z穎"n#"e栄c"EQF"e栄c"GIUD4"ecq"j挨p"GIUD3 t "t羽v0""X噂k"x壱p"v嘘e"5o1j"vj·"mj違" p<pi"n o"ejq"d́p"j衣v"8逢嬰e"zƒq"vt瓜p"o衣pj"j挨p."ik違o"vjk吋w"x́pi"ej院v"x "ik¿r"xk羽e" vk院r"z¿e"ik英c"d́p"x "p逢噂e"vj違k"v嘘v"j挨p0
V衣k"v違k"vt丑pi"vj泳"4"*30-60 ngày+<"m院v"sw違"mj»pi"e„"u詠"ej‒pj"n羽ej"ik英c"4"ikck" 8q衣p0"Ucw"52"pi {"vj·"8«"e„"u詠"j·pj"vj pj"n噂r"d́p"vt‒p"d隠"o員v"j衣v"RXC0"X噂k"o瓜v" n逢嬰pi"d́p"j·pj"vj pj"vt‒p"j衣v"RXC."vjgq"8„"v嘘e"8瓜"n逸pi"e栄c"j衣v"RXC"8逢嬰e"8q"d茨pi" tj詠e"pijk羽o"n "395o1j0"V嘘e"8瓜"f¤pi"e栄c"p逢噂e"荏"3.89o1j"x "5o1j"n "swƒ"pj臼"uq"x噂k" x壱p"v嘘e"n逸pi"e栄c"j衣v"RXC0"U詠"zƒq"vt瓜p"ej栄"{院w"n "fq"u詠"j·pj"vj pj"eƒe"mj "fq"swƒ" vt·pj"m鵜"mj "v衣q"vj pj"dƒo"x q"j衣v"RXC"n o"zƒq"vt瓜p"vtqpi"d吋"rj違p"泳pi0"Ak隠w"p {" 違pj"j逢荏pi"8院p"rj亥p"p q"mj違"p<pi"ik«p"p荏"e栄c"d́p0
V衣k"v違k"vt丑pi"vj泳"5"*82-;2"pi {+<"jk羽w"sw違"z穎"n#"EQF"荏"x1 n噂p"j挨p"x20"Ak隠w" p {"e„"vj吋"nk‒p"swc"8院p"u詠"mk吋o"uqƒv"rJ"8亥w"x q0"Ikck"8q衣p"p {"ijk"pj壱p"8逢嬰e"rJ" fcq"8瓜pi"荏"ikƒ"vt鵜":ł2.50"A吋"mk吋o"uqƒv"rJ"ikck"8q衣p"p {."vc"ik違o"n逢嬰ng NaHCO3 u穎" f映pi0
2.2.5.2. Ki吋m sốt v壱n hành:
Eƒe"vj»pi"u嘘"mk吋o"uqƒv"vtqpi"swƒ"vt·pj"x壱p"j pj"i欝o<"rJ."8瓜"mk隠ọ"XHC"*czkv"dfiq" f宇"dc{"j挨k+
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 57
Hình 4-10: pH (a) x "8瓜"mk隠o"*d+"vtqpi"swƒ"vt·pj"x壱p"j pj"荏"eƒe"x壱p"v嘘e0
Vtqpi"uw嘘v"swƒ"vt·pj" x壱p"j pj." 8瓜"mk隠o"fcq"f瓜pi"v瑛"622-1600 mgCaCO3/l. V衣k"ikck"8q衣p"GIUD"3."8瓜"mk隠o"8亥w"x q"8逢嬰e"mk吋o"uqƒv"荏"822-3222"oi1n."v衣k"8亥w"tc" vj·"8瓜"mk隠o"fcq"8瓜pi"fw{"vt·"鰻p"8鵜pj"x "fcq"8瓜pi"mj»pi"pjk隠w"v瑛":22-1000mg/l.
V衣k"ikck"8q衣p"GIUD"4."8亥w x q"荏"o泳e"622-3822oi1n"x "8亥w"tc"e„"u詠"vjc{"8鰻k" mjƒ"n噂p."fcq"f瓜pi"v瑛"622-1700 mgCaCO31n"0"Pj·p"ejwpi"n "e„"u詠"vjc{"8鰻k"n噂p"x隠"8瓜" mk隠o0"vw{"pjk‒p"rJ"8亥w"tc"vj·"荏"ikƒ"vt鵜"ecq"*9-:.5+0"Vw{"8¤{"n "mjq違pi"rJ"ecq"ejq"xk" ukpj"x壱v"m鵜"mj "jq衣v"8瓜pị"vw{"pjk‒p"p„"mj»pi"d鵜"違pj"j逢荏pi"n噂p"8院p"jq衣v"8瓜pi"e栄c" d吋"rj違p"泳pi"*jk羽w"sw違"z穎"n#"8衣v"60-80%). Vjgq"Ogvechv"cpf"Gff{"4225."mjq違pi"8瓜" 5 5.5 6 6.5 7 7.5 8 8.5 0 20 40 60 80 100 pH Ngày (a) Vào EGSB 1 EGSB 1 Vào EGSB 2 EGSB 2 0 200 400 600 800 1000 1200 1400 1600 1800 0 20 40 60 80 100 A 瓜" mk 隠o "o iE cE Q 51 n Ngày (b) Vào EGSB 1 EGSB 1 Vào EGSB 2 EGSB 2
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 58
8違o"d違q"rJ"mj»pi"d鵜"vjc{"8鰻k"8瓜v"pi瓜v"fq"swƒ"vt·pj"czkt hĩạ
b. VFA:
Pj逢"8«"8隠"e壱r"荏"rj亥p"vt‒p."v雨"n羽"XHC1VC"n "o瓜v"vtqpi"eƒe"{院w"v鰻"8吋"8ƒpj"ikƒ" pjcpj" 8k隠w" mk羽p" x壱p" j pj" e栄c" swƒ" vt·pj" m鵜" mj 0" M院v" sw違" vj " pijk羽o" n " XHC" >" 422oi1n"vtqpi"uw嘘v"swƒ"vt·pj"x壱p"j pj."e”p"8瓜"mk隠o"vtwpi"d·pj"n "3222oi1n0"V雨"n羽" vjw"8逢嬰e"n "XHC1VC?2.40"Ak隠w"p {"e„"vj吋"mj鰯pi"8鵜pj"swƒ"vt·pj"m鵜"mj "jq衣v"8瓜pi"鰻p" 8鵜pj0"
4.2.6.Aƒpj"ikƒ các y院u t嘘 khác 違pj"j逢荏pi"8院n quá trình x穎 lý c栄a mơ hình.
Ü Thành ph亥n ch医v"fkpj"f逢叡ng N, P:
M院v"sw違"rj¤p"v ej"VP"vtqpi"o磯w"p逢噂e"vj違k"8亥w"x q"fcq"8瓜pi"v瑛"95"-110mg/l, vtqpi"mjk"VR"fcq"8瓜pi"v瑛"37-57oi1n."x噂k"EQF"vtwpi"d·pj"8亥w"x q"n "3222oi1n"*fcq" f瓜pi"v瑛":22-3322oi1n+0"X噂k"v雨"n羽"472<7<3"8嘘k"x噂k"swƒ"vt·pj"m鵜"mj "x "v雨"n羽"p {"u穎" f映pi" ejq" ukpj" x壱v" m鵜" mj " u穎" f映pi" v衣q" ukpj" mj嘘k0" V逢挨pi" 泳pi" x噂k" v雨" n羽" EQF" ?3222oi1n="vj·"n逢嬰pi"P."R"v逢挨pi"泳pi"e亥p"vjk院v"e pi"ej雨"n "<"42"x "6"oi1n0"Pj逢"x壱{." zfiv"x隠"o員v"v雨"n羽"vj·"n逢嬰pi"P."R"n "f逢"uq"x噂k"pjw"e亥w"e亥p"vjk院v"e栄c"swƒ"vt·pj"z穎"n#"m鵜" khí. Piq k"tc."swƒ"vt·pj"m鵜"mj "ej雨"z穎"n#"3"rj亥p"pj臼"n逢嬰pi"P."R"*vjgq"v雨"n羽"vt‒p+."m院v" sw違"P."R"mj»pi"vjc{"8鰻k"pjk隠w0"Fq"x壱{"8吋"z穎"n#"8逢嬰e"4"vj pj"rj亥p"p {."8”k"j臼k"rj違k" e„"eƒe"oqfwng"rj c"ucw"8吋"z穎"n#"vtk羽v"8吋."8衣v"vk‒w"ejw育p"z違"vj違k"8亥w"tc0
Ü SS:
X噂k"p欝pi"8瓜"UU"8亥w"x q"8逢嬰e"8q"pic{"ucw"mjk"n医{"x隠"n "i亥p"522"oi1n0"O磯w"e„" vj詠e"jk羽p"n丑e"d茨pi"n逢噂k"n丑e"vkpj"vt逢噂e"mjk ejq"x q"vj́pi"ej泳c"8吋 e医r"ejq"8亥w"x q0 Ngồi ra, fq"swƒ"vt·pj"8吋"ej泳c"vtqpi"vj́pi"mj»pi"e„"mjw医{"vt瓜p"p‒p"mjq違pi"52"rj¿v" ucw""UU"ik違o"ej雨"e”p"32:oi1n."ucw"mjq違pi"3:"j"e”p"n衣k"66"oi1n0"X噂k"p欝pi"8瓜"UU" p {"mj»pi"違pj"j逢荏pi"v噂k"n噂r"d́p"m鵜"mj "e栄c"4"o»"j·pj"GIUB.
Ü N欝pi"8瓜 Amoniac:
A員e"vj́"n "p逢噂e"vj違k"ej泳c"p逢噂e"ik院v"o鰻"ikc"u¿ẹ"p‒p"j o"n逢嬰pi"coqpkce"p欝pi" 8瓜"ecq"*e„"vtqpi"p逢噂e"vk吋w"e栄c"8瓜pi"x壱v"ikc"u¿e+"p‒p" v"pjk隠w"u胤"違pj"j逢荏pi"v噂k"jq衣v" 8瓜pi"e栄c"xk"ukpj"m鵜"mj 0"
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 59
p院w"8«"vj ej"pijk="p院w"xk"mjw育p"mj»pi"vj ej"pijk"8逢嬰e"x噂k"p欝pi"8瓜"p {"vj·"rj違k"vk院p" j pj"rjc"nq«pi"8亥w"x q0
P院w"sw亥p"vj吋"xk"mjw育p"v衣q"o‒"vcp"8«"vj ej"pijk"x噂k"coqpkc"v詠"fq"vj·"p„"e„"vj吋" ej鵜w"8詠pi"p欝pi"8瓜"x k"vt<o""oi1n0"P院w"p欝pi"8瓜"coqpkc""n噂p"j挨p"3722 oi1n"v衣k"8k隠w" mk羽p"rJ"ecq"vj·"j羽"vj嘘pi"u胤"vj医v"d衣k0"P院w"p欝pi"8瓜"coqpkce"v詠"fq"@5222 mg/l thì nĩ vt荏"vj pj"vƒe"pj¤p""i¤{"vj医v"d衣kj羽"vj嘘pi".
D違pi"4-6: 謂pj"j逢荏pi"e栄c"P*PJ3) 8院p"swƒ"vt·pj"rj¤p"j栄{"m鵜 khí [34]
P欝pi"8瓜"P*PJ3) hịa tan (mg/l) 謂pj"j逢荏pi
50Ỵ200mg/l E„"n嬰k
200Ỵ1000mg/l Mj»pi"e„"違pj"j逢荏pi"d医v"n嬰k
1500Ỵ3000mg/l D鵜"泳e"ej院"v衣k"rJ@7
P院w"ej泳c"vtqpi"x壱v"f映pi"vjqƒpi"vj·"p欝pi"8瓜"u胤"ik違ọ"mj»pi"違pj"j逢荏pi"pjk隠w" v噂k"jq衣v"8瓜pi"e栄c"xk"ukpj"x壱v0"Vw{"pjk‒p"p院w"p逢噂e"vj違k"ej逢c"8逢嬰e"n o"vjqƒpị"x " n逢w"n逢嬰pi"x q"j羽"vj嘘pi"n噂p"vj·"e„"mj違"p<pi"i¤{"泳e"ej院"xk ukpj."違pj"j逢荏pi"8院p"jq衣v" 8瓜pi"e栄c"j羽"vj嘘pi0
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 60
5.1. M蔭V"NW一P
Swc"swƒ"vt·pj"x壱p"j pj"mj違q"uƒv"jck"o»"j·pj"GIUD3"x噂k"d́p"j衣v"m液"mj "x "o»" j·pj"GIUD4"x噂k"d́p"j衣v"m液"mj "x "ikƒ"vj吋"ocpi"RXC"荏"eƒe"v違k"vt丑pi"2.7=3; 2;4;8 kgCOD/m3.ngày x噂k"8嘘k"v逢嬰pi"n "p逢噂e"vj違k"ik院v"o鰻"x "ej院"dk院p"vj鵜v."nw壱p"x<p"t¿v"tc" m院v"nw壱p"pj逢"ucw<
Ü V隠 hi羽u qu違 x穎 n#"8嘘i v噂k"p逢噂c th違i Gi院t m鰻 thì khơng cĩ s詠 khác bi羽t l噂n
gi英a mơ hình EGSB cĩ giá th吋 và mơ hình khơng cĩ giá th吋. Tuy nhiên xét
v隠 tính 鰻p"8鵜nh thì mơ hình cĩ giá th吋鰻p"8鵜pj"j挨p0
Ü V噂k"8瓜 ki隠m duy trì 600-1000mg/l t衣i 2 b吋 ph違n 泳ng v磯p"fw{"vt·"8逢嬰e"8瓜 pH n茨m trong kho違ng 6,9-7,6 cho mơ hình ho衣v"8瓜ng t嘘t.C違 2 mơ hình EGSB 8隠u 鰻p"8鵜nh các thơng s嘘rJ."XHC."8瓜 ki隠o"8隠u th臼a m違n trong quá trình x穎 lý k鵜 khí.
Ü Ikck" 8q衣n kh荏k" 8瓜ng mơ hình nên duy trì v壱n t嘘c ch違{" pi逢嬰e" v逢挨pi" 8嘘i, khơng nên quá th医p, theo nghiên c泳w"p {"8隠 ngh鵜 là 3m/h.
Ü Vtqpi"8k隠u ki羽p"n逢嬰ng bùn b鵜 n鰻i và trơi ra kh臼i h羽 th嘘ng thì kh違p<ng x穎 lý c栄a mơ hình giá th吋 v磯p"fw{"vt·"8衣t hi羽u qu違 x穎 lý caọ
Ü V噂k"eƒe"vt逢運ng h嬰p b医t l嬰i x違y ra (trơi bùn do bùn b鵜 泳c ch院 b荏i amonia t詠
do) ph亥n sinh kh嘘i cĩ dính bám lên h衣t PVA cĩ tác d映ng giúp cho duy trì 1
n逢嬰ng sinh kh嘘i nh医v"8鵜nh.
5.2. MK蔭P"PIJ卯
V瑛"swƒ"vt·pj"x壱p"j pj"o»"j·pj"GIUD"x "pj英pi"m院v"sw違"8衣v"8逢嬰e"vt‒p"8¤{."o瓜v"u嘘" mk院p"pij鵜"8逢嬰e"8逢c"tc"pj逢"ucw<
/ C亥n thi院t k院 mơ hình EGSB cĩ t益 l羽 chi隠w"ecq18逢運pi"m pj"ecq"j挨p"x "fw{"vt·" v壱n t嘘e"f”pi"p逢噂c trong b吋 ph違n 泳pi"ecq"j挨p"p英c"8吋 v<pi"e逢運ng s詠 ti院p xúc gi英c"p逢噂c th違i và bùn, y院u t嘘 quan tr丑ng quy院v"8鵜pj"8院n hi羽u qu違 x穎 lý. Nên cĩ nghiên c泳w"u¤w"j挨p"x隠 quá trình chuy吋p"8瓜ng th栄y l詠e"e pi"pj逢"u詠 khu医y tr瓜n c栄a bùn
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 61
u挨"b瓜vt逢噂c khi cho vào b吋 x穎 lý k鵜 khí (k吋 c違 trên th詠c t院).
/ Hi羽u qu違 x穎n#"j o"n逢嬰pi"VR"x "VMP"vtqpi"p逢噂c th栄y s違n c栄a mơ hình th医p. Vi羽c 泳ng d映ng tri吋n khai b吋 ph違n 泳ng EGSB s穎 d映ng h衣t v壱t li羽u dính bám PVA c亥n ph違i kèm theo các cơng trình hi院w"mj "8吋 8違m b違o ch医v"n逢嬰ni"p逢噂c 8亥u ra cĩ thành ph亥p"f逢叡ng ch医v"pkvq"x "rjqvrjq"mj»pi"x逢嬰t quá quy chu育n x違 th違i cho phép .
/ C亥n cĩ các nghiên c泳u ti院p t映c v隠 v壱n t嘘c ch違{"pi逢嬰e"8吋 8ƒpj"ikƒ"jk羽u qu違, ch丑n v壱n t嘘c t嘘k"逢w"ejq"swƒ"vt·pj"jq衣v"8瓜ng c栄a cơng ngh羽 EGSB s穎 d映ng giá th吋.
HVTH Nguy忿º"O¾º̌"%̶Þº̶ 62
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