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HOI NGHI KHOA HQC CONG NGHt SINH HUU I UAN UU6C20t3- B A N H GlA HIEUQUA XO L t CHAT THAI CUA HAM tl KHi SII^H HQC K-T2 NguySn Vd Chau Ngan* vk Phan T r u n g Hieu Trubng Dgi hgc Cin Tha T6M TAT Ham iJ biogas kieu KT2 £ diitrc trien kliai khuon Idid dv in "Xliiiong trinh Khi siiih boc cho nganh chin nu6i Vi^t Nam" d€ xi^ 1^ chat thai chin nuoi ta$ gia dinh b dong bang sdng Cihi Long N^iiea ciru n&y md ph6ng su phan buy sinh hoc cua ham i KT2 nhim danh gii miic dg giam flii^ chit huu co, duong cliit vii vi sinh vat chi thj d nhilm phan vdi d le pha loSng phan : nubc khic d dieu Id^n phing thi nghidm 30 vi 40 KSt qui iM nghi$m clio thay iiam iu5jng chit hiiu co, n6ng d? duong cbit va sh lu?ng vi sinh v$I cik cdc nglii^m thuc giam ti 1@ thu|a v6i thU gian tSn luu nhimg khong hoin loan lo^ b6 M|c dil c6 th£ri gian xii 1^ keo dii, nhimg voi ti 1| ptidi trgn phan : au6c d ^ d$c nSn chat hioiig cik niroc &ii d4u la cik ham ii chua dat chuim gii tri nude xi M i mdi tmong C ^ cin nhic l^i cac thdng s5 v ^ hinh cik him ii KT2 vg thai gian iSn luu v i ti 1$ ph6i tron phin : nabc de lang hi|u qui sinh vi giim nhieu hon cic vi sinh v$t nhiem phin Tir khoa: him ii biogas JCT2, hi@u qui xit 1^ chit thii, sinh hgC, nhilm vi sinh, phin huy y^m MdoAu H^m ij khf sinh h^e da dugc gibi thieu a nubc ta tCr nhOng nam 60 cua t h ^ ky I n j ^ c nhung bSt dliu k h ^ sSc tCr sau Chwcng trinh NSng lu-png tki tgo quoc gia 52C du-pc t h ^ c h i ^ T i r nh(rng nam 90 tr6 v ^ sau, mOt s6 chu-ong trinh qu6c gia va d y kn hgp tie qu6e t^ da h5 In? n h i l u hb gia flinh xay di/ng hkm biogas glOp xi> i'if chk thki chkn nufli, dong Ih&i thu h6i lipfrng gas s i n sinh phvc vg dc nhu cSu sO dgng n i n g lirpng nhu dun nSu, I h l p sdng, phdt di$n Cflng ngh$ sinh hQC p h i t titkn c i v l sd i u p n g vk da d^ng c ^ k i l u h4rn iJ, eg the cr d6ng b^ng sdng COu Long (DBSCL) hi$n dang t r i l n khai ckc k i l u till u PE, h i m Ci T G - BP KT2, E Q , EQ2, composite, VACVINA Thflng Ihirdrng mfli mOl dg i n h i trg cd xu hw^ng t r i l n khai chl mfit k l l u h i m iJ / ti3i biogas d i n hb d i n d l don g i i n cflng t i c q u i n I'if dhb chu'a quan t i m d i n h i f u q u i xir \'j ehat thSi ho^c kha nSng khai thkc gas cho c i c nhu c l u si> dgng n i n g lirpng (Nguyen Vo Chau Ngan et al., 2012) Tinh den cu6l n i m 2012, ' C h i r o n g trinh Khl slnh hpc cho ngdnh chdn nufli Vi#t N a m ' l i 6g i n hfi t r p x i y dpng h i m iJ biogas vo^i quy mfl Icrn n h i t t^l Vi$t Nam v d i b^n 125.000 l||im Trong s6 cac k i l u h i m ii dirpc t r i l n khai d p i n n i y , h i m ii KT2 6ugc ch^n t r i l n khai eho hO gia dinh b BBSCL d o chieu sSu Sko d i p thdp phCi hpp vbi nhirng khu v y c cfl mge nubc n g i m eao H i m ii K T l i phiSn ban cai t i l n tt> mfl hinh h i m TG-BP du'pc gidi thi§u b&i Dal hoc c I n Ther vfl'l m$t s l thay doi n h u thay d i lfa'1$ nap riirfl'c : p h i n , k i o d i i ho'n thfl'i gian l l n liru c^^a hfin hpp h i m , sCr dgng toan bO gach I n g d l x i y dpng thay vl sir dgng gach thi nhu h i m TG-BP, khflng si> dgng Idp vQ-a tam hpp d l l f l m$t v i m^t n g o i i vflm chi>a kh(, lo^i bfl han k l l d u dai o i n g v i dai m i m tnang t h i n h i m Q Trong s6 dd, vi$c thay doifa'1$ p h l i IrOn phfin: nird'c v i kdo d i i thdi gian t i n luu cua h i n hpp cd i n h hufl'ng trpc t i l p d i n c h i t l u p n g nu&c t h i l d l u cGa ham i!i, q u y l t djnh d i n mi>c d$ n h i l m cua n g u i n t i l p n h | n Bing So s i n h c i c thdng s i k f thuat cila c i c ham u ^ ^ " ^ Tl i§ pha ioSng phan: nuoc • • - Thdi gian luu (ngSy) Lirpno phan luoi ngp loi da v i o him (kg/m ngiy) 15:5? 1.5 - 20 5,56 \ ^ 1:1 1:2 • 30 ; - 40 1:1-11.5 t:2-B,S • Sau h i m u TG-BP flupc gidi fiil$u v i trien khai v i o n i m 1992 da cd n h i l u nghiSn ciru v l h i f u q u i xi> 1^ c h l l I h i i cCIa' - kieu h i m n i y H I U h i t dc nghiSn cO'u cho t h i y chi k h o i n g SO - 60% nhu c l u o-xy hda hpc (COD) - % chai r^n l o l i m g ^ggj gg ggo^ ,gng Collfonn, 30 - 35% t i n g ni-tcr v i t i n g phlt-pho cd I h l d u p c loai bd sau q u i b'inh phan hOy Irong h i m Ci TG-BP; chinh vl v f y nu&c ttiii sau h i m Cl biogas dupc k h u y i n c i o t i l p tuc xO-1^ tru&c t h i i moi tru&ng Trong dd mfl hlnh KT2 ehO trpng v i o g i i m I h l tich x i y dpng e^a h i m d p a trgn lupng c h i t t h i i d n xir ly, giSmfa'I f pha loang p h i n : nu&c nhung l^i t i n g Ih&i gian ton luu v&i ty le chua t u c n g xO-ng D i l u n i y dat c i u hdi v e h i f u qua xi> 1;^ chat t h i i e h i n nufli cua k i l u h i m u n i y M | c dii chua c nhirng t h i n g k§ eg t h l s l l u p n g c i c ham u biogas flupc x i y dpng & DBSCL, s d l u p n g c i c h i m KT2 u&c tinh c h i l m khoing'3/4 long s l h i m biogas da x i y dpng V&i s i lupng e h i l m da s l , h i f u qua x u ly c h l l thSi cOa kieu h i m ii K72 r i t quan trpng fa^ng cflng t i c quan ly chat thai hO c h i n nufli heo, b i o vf'infli fav&ng s i n g cCiacfng d i n g xung quanh NghlSn cuu nky d u p c thpc h i f n n h i m d i n h gia h i f u q u i xd t]^ chat thii cua kieu h i m Ci KT2 d i l u l u f n i p dgng & DBSCL C i c Ihflng so ly hpc, hoa hoc v i sinh hpc cOa c h l l ttiai dau v i o v i flau cOa qua trinh i!i se dirpc thu t h f p p h i n tich K i t q u i cOa nghiSn cuu cd t h l giOp cai t h i f n d i l u k i f n v f n h i n h cua k i l u h i m G KT2 t^o c u hfli cho n g i n h c h i n nuoi p h i t triln b i n vO'ng NGUY6N L i e u VA PHU'ONG P H A P Nguyen l i f u M l u p h i n t u o i I l y t u h f e h i n nudi cua anh Nguyen V i n Nam ngu lgi x i Long Hfla, h u y f n Phong D i l n , t h i n h p h i C i n Tho v&l s l l u p n g dan heo & th&i d i l m lay m l u l i heo n i i v i 20 heo eon ' H Q I N G H ! K H O A H ( ? C C O N G N G H £ S I N H HQC T O A N Q U O C 2013 Phuomg p h i p H a i t i I f pha Thi nghifm d u p c thpc h i f n b phflng thi nghifm mfl phdng qua trinh phan huy yem cua h i m " f ^ ^ Y * ^ ^ nioi m f t loang p h i n v i nu&c k h i c g i m : v i : Tien h i n h thi nghiem v&i c i c b f tfii n g h i f ni u P"*"• " ^ ^.^^^^ L thOb f gom ed m f l binh L noi l i l p v&i hai binh L Binh L l i binh se flupc nap hfln hpp P " f " \ \ " ^ i ' ^ binh L phit chira nubc, hai binh nky noi v&l b i n g I n g m i m thdng qua m i f n g binh Binh L thu naiiien Ke thu n h i t phia d i y binh d l n h f n lupng nude flIy qua h i n g n g i y khl sinh tir blnh u L cniem cno ^ Blnh dupc bao k(n b i n g bii ni-Bng flen fa^ng su6l tti&i gian l i m Ihi nghifm d l t ^ h ^"^^ " f " " j , ^ ' ? J ' ' ^ | " c S ) , v i o dung dich T h l lich sinh d u p e m6l n g i y s u i t q u i trinh (thfing qua t h l tich n u d e chiem Doi v&i nguyen Hfu ngp H y mSu phSn t u o i dem v l pha loang v&i nu&c m i y cho hai n g h i f m lhi>c sau: N g h i f m Ihuc t h u theo fi I f : nap v i o blnh 2,5 kg p h i n v&i 2,5 L nu&c, k h u i y d l u v i d f y kin n i p WNghifm lhi>c t h u I h K , I! I f 12 nap v i o binh 1,67 kg p h i n v i 3.33 L nu&c, k h u i y d l u r l i d f y kin n i p lgiDo c i c t i i l i f u liSn quan d i n talu h i m u KT2 khflng d l d p ^ t " ' T ? ^^^S* " ^ TJomtti i f o h a l o t S K khflng d i o c h i t n S D l S i m b i o d f t n c f y eua thl nghifm, cfl b f binh u d u p c b l In cho m l i fl I? pha loang pna nu&c k h i c N h u v f y t i n g c f n g b f binh flupc t i l n h i n h Irong Ihi nghigm Hlnh I B I tri thl nghifm - T i l n h i n h I l y m l u dung djeh d l u v i o v i p h i n tich de cht fafiu mfli Iru&ng (SS, COD, BODs Ni-tu, P t6ng, E eoli) Sau dd ifiti lupt b n g i y Ihir 30 v i 40 tiln h i n h Ihu m l u v i p h i n tich c i c chl tigu mfli I n k i n g m l u fliu v&i d c c h i lieu tuong tg T i t d c i c m l u thu Uifp dupc p h i n Kch theo Standards Methods (1992) tgi Phdng tht nghiem KJ t h u f t mfli hu&ng - Khoa Mffl tru&ng v i T i i nguySn thifin hhign, D f l hpc Can T h u K i t q u i p h i n tich c i c chl ti6u moi fa-u&ng cua m l u nu&c t h i i d l u v i o v i d l u lir m f u d u p c so skrih fli flinh g i i h i f u q u i xu ly i i n g v&i lirng tl I f pha ioang p h i n : nu&c k h i e K ^ QUA VA T H A O LUAN H i f u qua x u 1;^ K i t q u i p h i n lleh m l u hfin hpp fliu v i o v i fliu cOa h i m G biogas d u p c trinh b i y fa-ong Bang N l u so s i n h & hal ti If ph& t r f n , fi I f phfii t r f n p h i n : nu&c l i : cho h i f u qua xii lif c h i t t h i i cao hon so v&i fi Jf p h l i t r f n p h i n : n u d e l i : n if phfii t i f n : cd lupng v f t c h i t r i n n h i l u hern, d n n h i l u th&i gian d l xi> ij h o n Theo Nguyen Duy T h i f n (2001), s p hogt flfng binh thir&ng d a vl k h u i n mfl-lan d n k h o i n g 90% nu&c de ISn men v f t l i i u thai v i d i n % vat c h i t khd P h i n heo t u o i thflng thudng cd h i m lugng v f t c h i t khfl v i o khoang 30 den 35% N h u v f y , v l f c p h l i trOn tl I f : chua dua-flupe hfin hpp ii v l I m flf phCi hpp cho m f Ci y I m Bing Hifu s u i t xir ty c h i t thai ciJa m i u thl nghifm sau 30 ngiy^vi 40 Til^pha Hlfu q u i Xu l * BODs COD Nling Pling •'°^- ; ;1 30 ngdy 25,7% 59,7% 3.4% 6.2% 11 : 40 ngAy 30,5% 60,4% 7,5% 21.5% 30 ngiy 40 44.0% 69.7% 18.2% 8,0% 56,0% 71,B% 29.6% 33,1% d d hai S If p h l i t r f n thpi gian t i n luu c i n g k i o d i i se cho h i f u q u i xxr ly cao h o n Tuy nhiSn, h i f u q u i XCP | I ^ C O D khflng the h i f n rd sp k h i c bift Iheo Ih&i gian phan hCiy Iwlf c dO h l f u qua xir Ij COD cao hom n h i l u so v&i h i f u quS xir ij B O D S , flilu n i y cho I h l y cd sg c h u y i n hfla hda hgc d i l n fa-ong m f ii l i m cho cac tiianh p h l n hda hpc fa-ong c h i t h&u eo bj p h i n hdy n h i l u h o n D & v o i c i c d u o n g c h i t N v i P h i f u q u i xO ij cOa d hai fi I f p h l i t r f n khdng cao e h u n g tfl vi slnh v f t y I m khl Wiflng h i p ttig ngufin d u o n g c h i t nguyfin l i f u N h u v f y , nhOng b i o c i o v l xi> ly du&ng c h i t h i f u q u i cao eOa c i c ham cd till xem l i 'xir ij i o ' lupng d u o n g c h i t g i i m fli khdng p h i i q u i fa-inh c h u y i n hda h a hgc hay sinh hpe m i q u i fa-inh Ij hgc - du&ng c h i t fa-ong hfin h p p u lang xufing d i y h i m ii l i n g trpng Ipc 1194 HOI NGH! KHOA HQC C O N G NGHg SINH HOC TOAN QUOC 2013 -Cin cu vao-10 TCN 492=2002 quy djnh me jii yIm cd him lupng chat hOu co dlu giim trf n^50% so v&i djch^ phin ban fliu (Sg Ndng nghifp v i PTNT 2002) Nhu vfy, kit quS phin lich cho thiy chifaeuCOD v i cht tiguBODs cua ti If - sau ngiy thu 40 l i d^t yfiu d u Tuy nhiin, v&i kit qua phan lich tnang thi nghifm nay.tfle ngp 1:1 v i : cfl gii bi BODs dlu sau 40 ngiy l i 5800 v i 3300 mg/L, giifaiCOD l i 25333 v i 12000 mg/L, Tit d cic giifa-jv l du&ng iMt b dau d a me u hoan toin chua fl^t quy djnh xa thii cua nu&c thii cong nghifp theo QCVN 40:2011/BTNMT (Bf Tai nguygn v i Mflifauong.2011) Nguon x i thii niy d n phii dupc lar Ijfalpfav&ckhi thii vio nguin sip nhf n._ Gii tr} pH Gii tri pH thfch hpp cho quifa-inhsin xuit khl sinh hgc ICr 6,5 din 7,5, flfl gii tri tir 6,8 flln 7,2 l i khoing phij hpp nhll cho vl khuin sinh khl mf-tan lln Uii vf ho^l dfng (Gerardi, 2003) Trong dilu kifn niy sp sinh tni&ng v i phit failn cua vi khuan slnh mS-tan flgt gii trj-cpc dgi, pH nhfl hon 6,4 cfl nghTa l i mfli tru&ng a-xit ylu chua vupt qui gl&l han hoat fling c^a vi khuin sinh mS-tan, nlu pHtilpfa^cgiim sf inh hu&ng trpc filp flln sinhfiir&ngv i phit triln d a loai vi khuin rfiy.^Tnang mf ii sinh hgc, giifaipH b| inh huong five liep boi CO2faxingthinh phln khl sinh ra: Kll q d flo dgc pH thl nghifm niy cho thiy gii tri pH d a nguygn lifu dau vio giam sau 30 ngiy v i sau fld ting din lln o ngiy tiiir 40, dilu niy phis hpp v&i diln biln cOa mf D yem khl Thdng thu&ngfawigglai floan fliu d a qui fainh ylm khi, gii-tri pH cd xu hu&ng giim sp phin hdy d a cic a-xit bay hoi Ch? nio vi khuin slnh khl mg-lan phit bien mgnh, cic a-xit bay hoi se bi nhdm vi khuin niy fiiu tiig lim cho gia tri pH cCia mf ting dIn.-Cic gii In dupc efln t h ^ hon nguong pH phO hg^ nhit cho vi khuin sinh Idii m@-lan boat dfng ch&ng td mf u vln eflnfa-onggiai dogn smh a-xit, nguygn llfu ngp nhilu qui chua flupc phin huy hoin tointiigmchi sau 40 ngiy ii h Gii bj pH dlu vio, sau 30 ngiy v i 40 ngiy iJ Hinh Eco/i dau vio, sau 30 ngiy vi sau 40 ngiy d Hlfu qui xir Ij vl slnh cda mf u Mfc dil khfing d sp khic bift v l gif fai Ecoft' fliu vio nhin chung gii tri E.cdi ciia cic thf nghifm fliu giam theo th&i gian xir 1^ Thf nghifm vfli U If ngp : cd hifu qui xu Iv vi sinh cao hon thi nghifm v&i tl If ngp :1 d d n g khdng th&i gian tfin luu Vifc pha loang hSn hpp nguygn lifu flau vio cung giup pha loing mfl df vi sinh vfltakingm i i] v i giup cho qua blnh xO ly vi sinh vfl nhilm phin diln tfit hon, neu ip 6\jng dupc tl If phit trfn phin : nu&c l i : cua him TG-BP thl ning x^ I;^ vrstnh vft sd d n eao hon nfiuflambao flupc thdi gian tin luuflOdii Nlu xit v l th&i gian tin luu, sau 30 ngiy ii thf nghifm ngp H If : va : giim tu 94,76 din 99,5% lupng E cdi V i din 40 ngiy ii muc df xO* 1;^ ting len 99,5 din 99,9% cho hai fi If ngp Theo mft nghign cuu tuong d a Vo Thi Yen-Phi et d (2009) dfii v&i lulu Wi PE khflng chi gii trj E.cdl giim tiieo th&i gian xO' ly mi mgl s l chi tigu vi slnh khic nhu Salmonella Senftenberg, Entemcoccus faecalis Somatic coliphage, MS2 phage cung giim theo quffa-lnhCi ylm khl chit Uiai Tuy nhien, mft vi sinh cdn igi chit tiiii fliu ^^n chua datfaeuchuan nu&e lu&i Ugu cOa WHO (2006) Va cung theo khuyin cio d a Nguyen Vo Chau Ngan (2012), nu&c thii dau ciia him fl biogas khflng ngn x i Ihii favc filp vio ngufin tilp nhfn v i khflng su dgng fli bfln cho logi ciy trfing eho rau qui i n tnjrc tilp Thdi gian ton luu v i lupng khl slnh Th&i gLan tfin luu a dfiy dupc hllu l i th&i glan ciia hfin hpp phin vf nude flupc giijfaxingmf hay cdn gpi l i thfli gian tfin luu thuy Ipc (HRT) Nlu nhu him TG-BP cd fi If ngp nguygn lifu phan : nu&e l i : v i HRT l i 20 ngiy, him Ci KT2 cd ti If ngp nguyin lifu phfin : nu&c l i :1 hofc 1:2 v i HRT Ii 30 hofc 40 ngiy luong t>ng IQIU him KT2 d fi If ngp phin : nu&c glimfa>2,5 din 5,0 lln, nhiin sfi ngiy ton luu chi cao gip 1,5 hogc gip 2,0 lln so vdi him Ci TG-BP Theo "Gerardi (2003), HRT dupc xerp l i ylu t l vfn hinh chinh anh hu&ng din wfc chuyin hda a-xit bay hoi thinh khl sinh hgc Nlu th&i gian tfin luu ngin se khflng thl chuyin hfla het lupng a-xft bay hoi tiiinh sinh hpc, lupng-d nhilm vln efln tri chit tiiii dlu Inh hu&ng din mfli tru&ngtiepnhgn b i tiiii Kll qui flo dgc hrpng sinh hing ngiy cho thiy, Irong luin dlu me ii ngp 1:1 cfl lupng khl slnh cao hon mf Ci ngp 1:2 lupng Wii tl(^ IQy & culi tuin tiii cOafiIf ngp :1 v i 1:2 l i 3.26 L v i 2.71 L luong Cmg TCr ngiy ttiu 21 lr& di sin lupng khl smh ctia mf u 1: Igl cao hom mf ii 1:1, xu hu&ng niy keo dai flln ngiyttii>37 Sau flfl lupng sinh d a fi If ngp :1 Igi cao hon ti If ngp : Trong tuin dau, hfln hpp u cfl him lupng vfy chit hOu co cao, hf vi sinh vft phit triln nhanh d ltifiuttigdflng thbi sinh lupng gas l&n Cf fajin tilp tiieo mf Ci tf If :2 ;• HQl NGH! KHOA HQC C O N G N G H $ SINH HQC T O A N Q U Q C fli c h u y i n sang giai doan tgo mS-tan tiii m f tf I f : v l n dang Irong qua fainh a-xit hda ^/ii^a " ^ ' ° " ^., , [gi eo g i y u c c h l hoai d f r i g ciia vi k h u i n sinh mg lan Tuy nhidn, d i n t u i n t h u l u p n g khf smh t u T ^ " " f niai dogn tang cao h o n m f i i nap : ch&ng Id m f d ngp : luc n i y da k i t thuc giai dogn a-xit hda vfi chuyen sa a ^ ^ ^ ^^^^ sinh mg-tan V i voi h i m luomg v f t c h i t hu'u c o ngp v i o cao hon m f Ci : , m f u : sg smh ^yv^a ^^ ^ g ^ v i dOy b i tinh b^gng n i y cho d f n d hai m f Ci h i t sinh khl Tuy nhiSn ttii n g h i f m chl dung lgi o khflng cfl s l l i f u dgc aJia chuiA th&i gian sau d d N l u x d l flln tti&i gian tfin luu d a m f 0, & n g i y thi> 30 l u p n g tich IQy d afa'I f ngp : va : l i ^ v , , v i & n g i y ttiu l u p n g khf tich luy cOa tf I f ngp : v i : l i 12,69 L v i 11.94 L Tfnh trung blnh lirpng KP ^^ ^ ^^ hfing n g i y fa^ong 30 n g i y cOa fi I f ngp : v i : l i 0,2 L v i 0,26 L v i frong 40 ngfiy cua H I f nap i • ' ^'a • L v i 0,3 L Th&i glan t i n luu cfing d i i , lupng khl tnjng binh sinh c i n g cao I R ;^ K !^ ^ E DiM glin'O (ng^) Hlnh Trung blnh s i n lupng khf sinh h i n g n g i y cda m3l nghifm thuc Nhin v i o dfi tiii k i t q u i trung binh lupng khf slnh h i n g n g i y , m f fl d tl I f ngp : fla cfl x u h u & n g g i i m l u p n g k h l d n sinh sau l u i n , farong flfl m f Ci cd ti I f ngp : v i n cdn sinh tfit tiifm chl d i n n g i y thu' 40 Dieu n i y chCrng lfl m f u cd fi I f ngp phfin fajwng d u o n g v&l nu&c (1 : ) nen d u p c kdo dfii tfi&i gian l l n l u u d l vi k h u i n y l m khf d th&I gian l i l p fa,ic phfin hfly n h i i u c h i t hQ-u c o hon vfi slnh me-tan, fling Ih&l giOp g i i m U i i l u n i n g d f hO'u c o 6- b i thSI d l u m i K^T LUAN v A KI^N NGHj Thi nghifm mfl phflng q u i trinh phfin h f y yem c h i t I h i i cQa k i l u h i m u KT2 cho I h l y c i c Ihflng sfi v f n hkrih cua k l l u h i m u n i y chua flgt d f fin c f y cao 6/ d hal Ih&i glan t i n l u u d u p c fli nghj l i 30 v i 40 n g i y , cac chi figu v l n f i n g ' d f c h l l hOu CO, du&ng c h i L vi smh v f t & d l u cQa q u i fa-lnh Ci m f c dCi cfl g l i m so v&i fliu v i o nhung v l n efln cao so v&i ygu c l u x i ttiil five t i l p d a QCVN 40 : 2011/BTNMT TT I f phfii fa-fn cua hfin h p p ll : v f i : cho p h i n : n u o c ehO y l u l i m g i i m till fich h i m d n x i y dpng chi> khflng c i i t h i f n d u p e h i f u q u i xir l y - c h l t t h i l so v&i k i l u h i m Q T G BP nguygn b i n Lupng khf sinh h i n g n g i y eua fi I f ngp : v l n cdn eao cho O i l y q u i trinh ii ehua t f n d y n g tfit ngufin h&u co fa-ong nguygn l i f u ngp d l c h u y i n hda t h i n h sinh hgc Cln-cfl nhung nghidn cuu ifing hpp d l flinh g i i h i f u q u i xi> 1;^ eOa h i m li KT2 fa-ong d i l u k i f n v f n h i n h thpc l l l i m ccr s& cho nhirng c i i tiln v l ttiflng sfi v f n h i n h bong l u o n g lai T A I L I ^ U THAM K H A O American Public HeafUi Association /American Water Worka Assoaalion /Waler Environment Federation (1992) Standard Methods for the Examination ot Water and Wastewater (18th edition) American Water Works Assn i/Vashington, DC B$ NOng nghifp v i PTNT (2002) Quy^t i^nh sd 21 V l vifc ban hinh li'Su chuin nginh vk linh vpc mdi tnr&ng, Bf Tii nguy§n v i Mfii inr&ng (2011) Thfing l u sfi 47 Quy d|nh quy chuin k? Ihuf I qu6c gia vS m3i Iruerng Dp i n Chuong trinti Ithf sinh hoc dio ngSnh chin nufli Viel Nam (2013) Gidi thlf u dp i n Tmy cfp Igl Irang web hap://www biogas.org vn/vlelnam/Gioi-thieu-du-an.aspx Ngiy tmy cfip 20/6/2013 Gerardi M H (2003) The Micnabiology of Anaerobic Digester A John Wiley & Sons Inc., Publicadon Nguyfin Duy Thifn (2001) Ky thuft si> dgng ning lupng mft tr&i NXB Xky dgng Nguyen Vo Chau Ngan (2012) Pnamolron of biogas plant in the Mekong delta of Vietnam PhD dissertation Leichtweia-lnstitute for HydraulicEngmegnngend Water Resources TU Braunschweig Germany Nguyen Vo Chau Ngan, Phan Tmng Hieu and Vo Hoang Nam (2012) Review on the most popular anaerobic digester models in the Mekong Delia J Viet Env 2012, Vol No pp 8-19 Vo Thi Yen-Phi, Joachim aemens, Andrea Rechenburg, Bjom Vinneras, ChrisSna LenBen and Thomas Kistomann (2009) Hygienic effects and gas producBon of plastic bktdigesters undertropical conditions J Water Health 7(4): 590-596 HOI NGHI KHOA HQC C O N G NGHE SINH HOC T O A N Q U C 2013 EVALUATION ONTREATMENT^FFICIENCYOF 1^2 BIOGAS PLANT" - Nguyen Vo Chau Ngan*, Phan Trung Hieu Can Tho University SUMMARY KT2 biogas plant have been promoted in project "Biogas program for the animal liusbandiy sector in Vietnam" to treat for household husbandry waste in die Mekong delta This batch scale study replicates KT2 digester conditions to evaluate the reduction of organic matters, nutnents and mdicator microorganism at two different dilute ratios in the anaerobic treatmenl of pig manures at 30 and ' days Results' Showed tliat orgamc matters, nubients and indicator micFOoiganism were more reduced due to high hydrauhc retention time but none was completely eliminated A l t h o u ^ treated wilh higih hydraulic retention time, but by dense ratio of pig manure and water, the efQuent quality does not meet required quality values for national technical regulation on industrial wastewater Il should be considering on operation parameters such as hydraulic retention time, dilute ratio to increase gas production and minimize indicator microorganism Keywords: biogas, KT2 biogas plant, micro-organism pollutant, waste treatment efficiency, anaerobic fermentation "Author for corresspondence Tel +84-710-3831068; EmaB: nvcn9an@ctu.edu.vn ... quifa-inhsin xuit khl sinh hgc ICr 6,5 din 7,5, flfl gii tri tir 6,8 flln 7,2 l i khoing phij hpp nhll cho vl khuin sinh khl mf-tan lln Uii vf ho^l dfng (Gerardi, 2003) Trong dilu kifn niy sp sinh tni&ng... qui gl&l han hoat fling c^a vi khuin sinh mS-tan, nlu pHtilpfa^cgiim sf inh hu&ng trpc filp flln sinhfiir&ngv i phit triln d a loai vi khuin rfiy.^Tnang mf ii sinh hgc, giifaipH b| inh huong five... Sau flfl lupng sinh d a fi If ngp :1 Igi cao hon ti If ngp : Trong tuin dau, hfln hpp u cfl him lupng vfy chit hOu co cao, hf vi sinh vft phit triln nhanh d ltifiuttigdflng thbi sinh lupng gas