Dang T H6ng Phuong va Dig Tgp chf KHOA HQC & CONG NGH$ 95(07) 21 26 NGHIEN ClTU ANH HU''''OfNG CUA CHE DO SUC KHI DEN QUA TRINH XUT LY Nlf6C THAI CHAN NUOI LQN BANG PHU''''ONG PHAP SEQUENCING BATCH REATOR ([.]
Dang T H6ng Phuong va Dig Tgp chf KHOA HQC & CONG NGH$ 95(07): 21 - 26 NGHIEN ClTU ANH HU'OfNG CUA CHE DO SUC KHI DEN QUA T R I N H XUT LY Nlf6C THAI CHAN NUOI LQN BANG PHU'ONG P H A P SEQUENCING BATCH REATOR (SBR) D?ng Thj H6ng Phuong', Phgm Thj Hdi Thjnh', VD Thj Thu Hui' 'Tnrdng Dgi hgc Nong Idm - DH Thai Ngu Vi4n Khoa hgc Cong nghe Viet N TOM TAT Nghien cim anh hudng ciia chi dp sgc khf din qud trinh xu ly nudc thdi chSn nuoi Ipn sau qud trinh xii ly yem bang phuong phdp sequencing batch reator (bim hoat tinh theo me) cho thdy che dp sgc khong dnh hudng nhilu din hi?u qud xii ly COD, d cd che dp nghien cim, hipu qua xii ly COD tuong d6i cao, dgt khodng 90% M^t mi M nghidm thyc hi§n 12 gid Thdi gian thyc hi$n qud trinli nitrat hda mdt md thf nghidm Id gid, hi^u qud oxy h6a amoni dgt khodng 90 - 99% Chi d^ sgc gid/1 ni^ gim hai chu trinh thilu - hilu cho hifu qud xu 1^ COD, T-N cao vd In dinh nh^t Tir khda: nu&c thdi chdn nuoi Ign, SBR, thiiu - hiiu DAT VAN DE Dgc frung ciia nudc thai chdn nudi thugc logi gidu SS, COD, N, P Vi vay, dl xu ly nudc thai chdn nudi, kT thuat yem ludn la su lira chpn dau tien Tuy nhien, logi nudc thdi rat khd xir ly, bdi vi ndng dg hiiu ca ciing nhu nita nudc thai rat cao, neu chi xu ly bdng cac qud frinh sinh hgc yim thudng khdng friet de, vfin cdn mdt lugng ldn cac chat hiiu ca, chii yeu la N, P Do vgy, sau qud trinh xir ly yem khi, budc tiep theo Id qua trinh sinh hgc hieu - thieu ket hgp cudi ciing cd thl la budc xii ly bd sung nham giam thieu tdi da thdnh phan dinh duang Mpt cdc qua trinh hieu va thieu ca ban thudng dugc nghien cdu dng dung nhilu frong xu ly nudc thai chan nudi Ign Id phuang phap sequencing batch reator (SBR) (biin hoat tfnh theo me) Nghien cdu trinh bay mgt sd ket qud dat dugc thay ddi che syc din qua trinh xu ly nudc thai chan nudi Ign sau xu ly yem bdng phuang phap phdp SBR NOI DUNG VA PHUONG PHAP NGHIEN CUU Boi tugng nghien cdu Ddi tugng nudc thdi dugc chgn Id nudc thai tir hg chan nudi Ign quy md nhd Nudc thdi Idy tgi hd gia dinh chan nudi nhd le, d Gia Lam (Ha Ngi) Hp gia dinh chdn nudi khodng Email: hongphui 20 Ign, rua chudng lan/ngdy, vdo miia he rda lan/ngdy Lugng nudc diing khodng , - mVngay, cd mgt bl Biogas vdi thl tich m^, cd mpt be chdy tran 1,5 m^ Npi dung nghien ciru Ddnh gia anh hudng ciia che sue (lien tuc, gian doan) hieu qud xu ly COD, N Phuong phap nghien cuu - Phuang phap lay mdu: Lay mau theo TCVN 5999:1995 - Phuang phdp phan tich: Phdn tich COD, Amoni, Nitrat, Nitrit, tdng N, P theo QCVN hien hdnh - Phucmg phdp thu thfip va xu ly sd lieu: Tiln hdnh theo doi hang va ghi Igi cdc sd lieu frong qua frinh ldm viec, xu Iy bdng Excel Tfnh toan cac thdng sd tai lugng COD, hieu sudt xd ly vd ty Ip C/N theo cac cdng thuc sau [I] + Tinh tai lugng COD, T-N: LCOD = Ccoovao (mg/L) * Qvio (L/ngay) / (V * 1000); LT-N = CT-NV^O (mg/L) * Qv,o (L/ngay) / (V * 1000); vdi Q^io= Q (L/me) *2 (me/ngay) + Tinh hipu suit xd ly: COD, N H / , T-N: H = (Cvao- Cra)*100/Cvao; Thdi gian luu: T = V / Qvio + Tinh ty lp: C/N = CCODvao/Cj-N vao LcoD, LT-N : Tai lugng COD, N (kg/mV ngdy); Q: Luu lugng (5 L/me); T: Thdi gian luu nudc thai (ngdy), V: The tich nudc bl phan ung SBR (20L) 21 D^ng T Hing Phuang vd Dig Tgp chi KHOA HQC & C N G N G H $ H: Hipu suit xu ly ( %); Cva,,: Nong dp COD, N H / hodc T-N diu vao (mg/L) Cr„; Nong dp COD, Nil.,' ho^c T-N diu (mg/L); 1000: hp so quy doi KET QUA NGI IlKN CUU VA T H A O LUAN 95(07) 21-26 Mo hlnh thih bl thi nghidm Cdi tgo hp thiit bj biin hogt tinh hp thiet bj SBR, ldm vipc gidn dogn nhu hinh Cdc chS dp thi nghidm - Chi dp I: Chi dg syc gidn dogn chu Thuc nghipm trinh, syc khI gid, ldng gid, xa gid, Dac tnmg nin'rc thdi nghien ciru khuay trgn gid Ddc trung ciia nudc thdi nghidn cuu Ca sd lya chgn chi dg i: Nudc thdi nghien dugc the hipn Bdng 1: cuu cd d$c tinh hdm lugng N (amoni) cao nen BdngI; Ddc iruiig IUMC thdi chdn nudi ign sau xic chgn thdi gian syc khf k6o ddi de dam bdo i: vim Ihio^asl [2] qud trinh nitrat hda xdy hodn toan Hdm lu'png Thdng Sd - Chi dg 2: Che dp sgc gidn dogn chu pH 6,8 ' 7,4 trinh thyc hipn xu ly \it/m6, bam vdo I COD mg/L 450 - 800 gid, khuay trgn gid, syc gid, Idng N-NH,' mg/L 246 - 460 gid, xd gid N-NO,' mg/L 0,5 - 4,4 Tong N mg/L Ca sd chuyen td che dg thi nghifm sang che 250-463 TongP mg/L dg thi nghipm 2: Tdng thdi gian thieu de 5,6-10,4 TSS mg/L khd nitrat dd tgo 1500-3000 - Chi dg 3: La che dg syc gian dogn chu Dac trung cua nudc thdi chan nudi Ign cd trinh hilu - thilu khi, bam vdo gid, chua chdt hiru ca cao, ham lugng amoni cao khuiy trgn gid (bdt diu cung liic bam vao), va chat ran la lOmg tuang ddi cao Tuy nhien, syc khf gid, ldng gid, khuiy frgn gid, hdm lugng COD khdng cao nen phai bo sung them ca chdt de tang COD cho phii hgp vdi syc tiep gid, lang gid vd xd ! gid Luu tnuc di^h t.ghien ;du lugng 51it/me -Or a Mdy tfnh Bam nirdc thdi £0 khuay ^ [p5nI ORF I- Thiing dyng nudc Liru lupng kh[ Thiing chUa nudc S9ch m-^ Mdy thil Hinh Sa h? thiet bi thi nghidm SBR [3] D|ng T Hong Phuong vd Dtg Tgp chi KHOA HQC & CONG NGHg 95(07): 21 - 26 Anh hudng cua chi dp sue den hieu qua xir Iy COD, N Hieu qua xd' ly COD Hieu qua xd ly COD tai cdc chi dp thi nghipm khac thl hien tren hinh • C O D vAo - C O D ^ Hi§u su^t xii 1^ C O D 2000 '^,j(AAs!i!^^^soi^,ai^ ^^£«aS '^ , ^ ^ A ^'^w^i^aJ^^'toOf'^^w^fAvA^AAi^^ 1600 - / 1200 • • •••• * / v ô ã ã - ã , V-**"••••*•**•'>-^ • • • • ** 800 CDI CDI CD ,.^ " ' '• to 20 • 30 40 50 ' ' 60 Th6i gian, ng&y Hinh 2, Anh hu&ng cua che sue din hiiu sudt xir ly COD Chi dd sue dnh hudng khdng ldn din hieu suit xu ly COD d ca che dp deu cho hieu suit xd ly dat 85 - 90% va tuang doi dn dinh Nong dp dau thap, hau het khoang 150 mg/L (dgt QCVN40:2011/BTNMT, cot B) Tuy nhien chi van cho kit qua dn djnh hon ca Hieu qud xu ly Nita Hieu qud xir ly N-NHf Anh hudng ciia thdi gian syc khi/ngdng syc den hieu suat sd ly NH4^ tuang ddi rd ret, the hien d hinh • NH4-1- vAo HiĐu suat x a 1^ N H + >?ằ'''^"ằ^'.,^rfôMVl '- ^i"^ '^ / * ^^ *•••*• *• •• • • ***.**• • "*• • * • CDI CD '.•'^>"-V.i\y>> 80 v^ 60 Z 40 ^ CDS • "r Th6'i g i a n , n g d y Hinh Anh hu&ng cUa chi sue den hi^u qud xif ly NH4* - Tgi chi I, sue khf gid thi hidu qua xu Iy dat khoang 80%, ndng NHi^ < 100 mg/L; Dang T H6ng Phucmg vd fl(g T?p chi KHOA HQC & C N NOHg 95(07): 21-26 - Tai che dp va che dp 3, hi?u qud xir ly d^it tirang doi cao tren 90 - 99%, nong dp NHj* < 20 mg/L Sir chuyen hoa NOi Anh hirdng cua che dp syc den s\r chuyen h6a NO2' thi hi?n trSn hinh • N - v&o 100 • N O - CD CDI CD 80 f 60 40 " « • ' •-•X ^/-."-'-' nT 20 •'^Th.V.rt.'wJhV.i*^ 10 20 > 30 40 50 60 70 Th6'i gian ngiy Hinh Anh hudng aia thdi gian sjjc khi/ngitng sue den su chuyen hda NOi Sir chuyen hoa NOi Anh huong cua thoi gian sue khi/ngung sue dupfc th6 hipn hinh • N03- vao • N03- 250 • 200 150 s • • • • ma • • GDI CO CD 100 ^^^^ 50 •M,.T ••^V-**.-**-'^,^ 30 40 50 60 70 80 Thtri gian, ng&y Hlnh Anh hudng cua Ihdi gian sue khi/ngimg siic den sif chuyin hoa N03Anh huang cua thoi gian syc khi/ngimg sue khi ro rpt den qua trinh chuyin hoa Nitrat Thdi gian ngimg syc it thi qua trinh khCr nitrat khong dii de thyrc hien hit, vi the tji che dO NO3" dau tuong doi cao Tuy nhien d8n che dp 2, thi v6i thdi gian ngirng syc 18n toi gid thi kha nang khir nitrat la rSt tot CJ ch6 dp nong dp mlijc diu hSu h6t d&t dudi 30 mg/L Ding T Hong Phuimg vd Dig T?p chi KHOA HQC & CONO NGHE 95(07): 21-26 Hieu qua xir ly T-N • T-N v^o, mg/l - T-N ra, m&a A Hi^u su^t XLT y- T-N, % 600 100.0 500 * '^ A A^toew ^^ ^ 80.0 N- ^^ 400 60.0 t ^ 40.0 "1 300 20.0 * 200 0.0 too ) ( 10 20 30 40 50 Th6i gian, ng&y 60 70 80 Hlnh Anh hu&ng ciia che dg si^c den hiiu qud xit /)5 T-N Tai chi dp thi hi?u su4t ciia h§ thdng chi dgt - Hi?u qua xd Iy T-N tai che thdi gian sue gid/I me 12 gid bao gdm hai chu trinh khoang 20 - 30%, tdi chi dp thi hieu suat thieu khf - hieu khf la cao nhat, dat han 80% da len tdi khdang 70% Va sang che dp thi - Ket qua nghien cuu cho thay che dp sue hi?u suit xu ly T-N da dgt tdi khoang 75 gid/I me, me la 12 gid, gdm hai chu 80% Nhu vgy cd thl nhgn thSy, ty 1| thdi trinh thieu khf - hieu cho hieu qua xu Iy gian syc va ngdng syc la I : 1, va COD, T-N cao va dn dinh nhat mpt me thi nghiem xay hai chu trinh thieu - hieu khf la dgt hieu qua xd Iy nita TAI LIEU THAM K H A O cao nhit [1] Luong Due Phlm (2002), Gido trinh cdng KET LUAN ngh4 xu ly nu&c thdi bdng bi^n phdp sinh hgc, Nh& xudt bin Gido due, Ha N5i - Che dp sue khdng anh hudng nhieu din [2] Le Cong Nhit Phuong (2007), Nghien ciiu hieu qua xd ly COD, d ca chi dp nghien Uiln khai iing dung xd Iy ammonium nudc cuu, hieu qua xd ly COD tuang ddi cao, dgt thai nuoi heo vdi cong suat 20 m3/ngiiy vd nuoi khoang 90% dudng sinh khdi c6 nhdm vi khuan Anammox [3] Nguyen HiJu Trung (2010), Bio cdo de tdi cap Thdi gian th\rc hi?n qua trinh nitrat hda CO sd chpn lgc Vien Cdng nghe moi trudng mdt me thi nghiem 12 gid la gid, "Nghign cihi xir l^ ddng thdi thdnh phan hihi co vd hieu qua oxy hda amoni dat khoang dmh dudng nudc thdi chdn nudi Ign bdng 90 - 99% phuong phdp SBR" D^ng T Hong Phirong va Dtg Tgp chi KHOA HQC & C N G NGHf 95(07): 21 - 26 SUMMARY STUDY ON THE EFFECT OF REGIME AERATION PROCESS TO PIG LIVESTOC K WASTE WATER TREATMENT PROCESS AFTER ANAERATION TREATMENT BY SBR Dang Thi Hong Phuong'', Pham Thi Hai Thinh^ Vu Thi Thu Hue' 'College of Agriculture and Forestry - TNU, ^Vietnam Institute of.Science and Technolog To study the effect of aeration mode to the wastewater treatment process for pig breeding process afiter process treatment anaerobic by means of SBR (Sequencing Batch Reactor) indicated that aeration mode did not affect to the COD removal efficiency, in all research modes COD removal efficiency is relatively high, reaching about 90% Time for the nitrification performance of the tests is 12 hours However, the effect of this stage is hours Ammonium oxidation efficiency reached in about 90-99%, Aeration mode hours for one batch, a batch of 12 hours which includes luo anoxic cycles- the aerobic showed high efficiency and stable with COD and T-N Keyword: pig livestock wa.\iL' waler, SBR, anaerobic - aerobic Ngdy nhdn bdi: 28/6/2012, ngdy phdn bien-20/7/2012, ngdy duy^t ddng:27/7/2012 26 ... treatment process for pig breeding process afiter process treatment anaerobic by means of SBR (Sequencing Batch Reactor) indicated that aeration mode did not affect to the COD removal efficiency,... is hours Ammonium oxidation efficiency reached in about 90-99%, Aeration mode hours for one batch, a batch of 12 hours which includes luo anoxic cycles- the aerobic showed high efficiency and