Nghiên cứu khả năng xử lý nước thải chế biến mắm châu đốc bằng công nghệ oxi hóa nâng cao ozone UV

TRtfONG BAI HOC AN GIANG KHOA KY THU^T - CONG NGHI^ - MOI TRtfONG HO VAN THANG NGHIEN CUtJ KHA NANG X& LY Nl/6C THAI CHE BIEN MAM CHAU DOC BANG CONG NGHE OXIHOA NANG CAO (OZONE + UV) TRU^NG B^lHQC AN GIANG THlJVIEN KHOA LUAN TOT NGHIEP GVHD: Th.S Truong Kien Tho An Giang, 05/2013 LOI CAM ON is.Ga.es- Trong khoang thai gian hoc tap tai Truang Dai Hoc An Giang, toi da dugc quy Thay co tan tinh hudng dan, giang day tvr nhung mon hoc dai cuang, chuyen nganh den nhttng ky nang, dao diic cuoc song Dae biet suot qua trinh thuc hien de tai khoa luan tot nghiep ciia minh la Ian dau tien co ca hoi tiep can cong viec nghien curu khoa hoc nen gap khong it kho khan, nhung dugc su dong vien giup da nhiet tinh cua quy Thay co, gia dinh va ban be da giup toi hoan khoa lu^n tot nghiep Trong khoang thai gian giup toi nang cao dugc kien thiic chuyen mon, tong ket dugc nhung kinh nghiem thuc tiSn Bnh vuc moi truong Day se la nhung kien thiic b6 ich, la hanh trang quy gia cho cong viec cua toi tuang lai Thong qua bai bao cao khoa luan tot nghiep nay, toi xin chan cam an den: Ban giam hieu Nha Truang, Khoa Ky thuat - Cong nghe - M6i truang, quy Thiy co Bo mon Moi truang va Phat triSn b^n vung da trang bi ki^n thuc cho toi suot qua trinh hpc tap Thay Truang Kien Thp da tan tinh hudng dan va dong gop nhung y kien quy bau cho toi suot qua trinh thuc hien de tai khoa luan tot nghiep Thay NguySn Trung Thanh, co Nguyln H6ng Nhat can bo phu trach phong thi nghiem Khoa Ky thuat - Cong nghe - Moi truang da cung cap tai lieu va giup da toi qua trinh thi nghiem Ngoai toi xin gui lai cam an den tat ca nhung nguai ban cua toi, nhung nguai da gan bo, cung hoc tap va giup d9 chung toi nhung nam qua cung nhu suot qua trinh thuc hien de tai khoa luan tot nghiep Mac du da co nhieu co g^ng, no luc nhung vai kiSn thuc va thai gian nghien cuu h^n che nen noi dung d^ tai khong thi tranh nhung thilu sot Rat mong nhan dugc su gop y cua quy Thly co Toi xin chan cam an! Long Xuyen, thang nam 2013 Sinh vien thuc hien H6 Van Thing NHAN XET CUA GIANG VIEN HtfONG DAN Long Xuyen, 17 thang nam 2013 Th.S Truong Kiln Tho NHN XET CUA GIANG VIEN PHAN BIENI Long Xuyen, 17 thang nam 2013 TS Nguyln Trung Thanh NHAN XET CUA GIANG VIEN PHAN BIEN II Long Xuyen, 17 thang nam 2013 Th.S Truong Khanh Nhat Thao Kltda luqn tdt nghepLop DH10MT MUC LUC CHUONG I: GIO1THIEU1 CHUONG II: LUOC KHAO TAI LIEU3 2.1 Tong quan v6 nude thai ch bi&i mim Chau D6c3 2.1.1 Vdinetve che Men mam ChduDdc3 '2.1.2 Ngudn goc phdt sinh nude thai che biin mam.•4 2.1.3 Phuongphdp xic ly nude thai che Men mam Men nay4 2.3.Tong quan ve phuong phap oxihoanang cao5 2.3.1.Nhung hqn che cua qua trinh oxi hda hda hoc bang ede tdc nhdn oxihoa thong thudng5 2.3.2.Nhung uu viet cua qua trinh phdn huy oxi hda bang goc tu hydroxyl (*OH)6 2.3.3.Cdc qua trinh tqo goc hydroxyl (*OH)9 2.3.4.Phdn loqi cdc qua trinh oxi hda ndng cao10 2.4.Mot so qua trinh oxi hoa nang cao da duoc nghien ciiu12 2.4.1.Qua trinh oxi hda ndng cao khdng nhd tdc nhdn dnh sang12 2.4.2.Qua trinh oxi hda ndng cao nhd tdc nhdn dnh sang14 CHUONG ni: NOI DUNG VA PHUONG PHAP NGHIEN CUU18 3.1.Boi tuong nghien cuu18 3.2.Thai gian nghien ciiu18 3.3.Muctieu nghien cuu 18 3.3.1.Muc tieu chung18 3.3.2.Muc tieu cu thh18 3.4.Npi dung nghien cuu19 3.5.Phuang tien va vat lieu nghien cuu19 3.6.Phuang phap nghien ciiu19 3.6.1 Phuong phdp phdn tich cdc thong so nhiem19 GVHD: ThS TruongKiin TitoTrang i SVTH: Hd Van Thang Khoa lu&n tit nghepLop DH10MT 3.6.2.Phucrngphdp xic ly so lieu22 3.6.3.B6trimo hlnh22 3.7 Thai gian hru 6ng24 CHlTONG IV: KET QUA THAO LUAN25 4.1.Ket qua cac chi tieu ciia mau nude thai theo thai gian26 4.1.1.Kit qua cac chi tieu ciia mo hlnh sic dung ozone :26 4.1.2.Kit qua cac chi tieu cua mo hlnh sic dung ozone vd UV31 4.2.Ket qua cac chi tieu cua mau nude thai theo he so pha loang36 4.2.1.Kit qua cac chi tieu cua mo hlnh sic dung ozone36 4.2.2.Kit qua cac chi tieu cua mo hlnh sic dung ozone va UV41 CHUONG V: KET LUAN VA KIEN NGHI48 5.1.K6tluan48 5.2 Kiln nghi49 TAI LIEU THAM KHAO50 GVHD: ThS Truong Klin ThpTrangii SVTH: Hd Van Thdng Kitoa luan tit ngh^pLop DH10MT DANHSACHHINH Hinh 2.1: Quy trinh ch bidn mint3 Hinh 3.1: Su dung ozone d xu: ly nude thai che bien mini23 BQnh 3.2: Sil dung ozone kit hop vdi den UV de xu.Iy nude thai che bien mam23 Hinh 4.1: Bidu dd bieu diln su thay d6i pH theo thai gian cua mo hinh su dung ozone25 •H inh 4.2: Bilu dd bilu didn su thay ddi SS theo thdi gian cua mo hinh su dung ozone26 Hinh 4.3: Bilu dd bieu diln su thay ddi COD theo thdi gian cua mo hinh su dung ozone27 Hinh 4.4: Bilu dd bilu dien su thay ddi NH4+ theo thdi gian cua mo hinh su dung ozone28 Hinh 4.5: Mo hinh xu ly nude thai chS bifin mim b^ng qua trinh ozone29 Hinh 4.6: Mo hinh xu ly nude thai che bien mam bang qua trinh ozone dang hoatdpng29 Hinh 4.7: Mau thu dugc sau sue ozone thdi gian 240 phut30 Hinh 4.8: BiSu dd bieu diln su thay ddi pH theo thdi gian cua mo hinh su dung ozone va UV31 Hinh 4.9: BiSu dd bieu diln su thay ddi SS theo thdi gian cua md hinh su dung ozone va UV32 Hinh 4.10: Bidu dd bieu diln su thay ddi COD theo thdi gian cua md hinh su dung ozone va UV33 Hinh 4.11: Bieu dd bieu dien sir thay ddi NH4+ theo thdi gian cua md hinh su dung ozone vaUV'.34 Hinh 4.12: Md hinh xd ly nude thai che bien m^m bang qua trinh ozone va UVr35 Hinh 4.13: Mau thu dugc sau sue ozone va UV thdi gian 240 phut35 GVHD: ThS Truong Kien TlwTrang Hi SVTH: Hd Van Thing Khoa limn tdt nghepL&p DH10MT Hinh 4.14: Bieu bieu dien su thay doi pH theo he so pha loang cua mo hinh su dung ozone36 Hinh 4.15: Bieu bieu dien su thay doi SS theo he so pha loang cua mo hinh su dung ozone37 Hinh 4.16: Bieu bieu dien su thay doi COD theo he so pha loang cua mo hinh sur dung ozone38 Hinh 4.17: Bilu d6 bilu diln su thay dli NH4+ theo he s6 pha loang cua mo hinh su dung ozone40 Hinh 4.18: Mau thu dugc sau sue ozone thai gian 240 phut theo he s6 pha loang41 Hinh 4.19: Bieu bieu dien su thay doi pH theo he so pha loang cua mo hinh sudung ozone vaUV42 Hinh 4.20: Bilu d6 bilu diin su thay d6i SS theo he s6 pha loang cua mo hinh su dung ozone vaUV43 Hinh 4.21: Bieu d6 bilu diln su thay d6i COD theo he s6 pha loang cua mo hinh su dung ozone va UV44 Hinh 4.22: Bilu d6 bilu diln su thay d6i NH4+ theo he s6 pha loang cua mo hinh su dung ozone va UV46 Hinh 4.23: Mau thu dugc sau sue ozone va UV thai gian 240 phut theo he so pha loang47 GVHD: ThS Truong Kim ThpTrmig iv SVTH: Ho Van Thing Klwa luan tdt nghepL&p DH10MT DANH SACH BANG Bang 2.1: Kha nang oxi hoa cua mot so tac nhan oxi hoa6 Bang 2.2: Cac hop chit hilu ca bi oxi hoa boi g6c hydroxyl (*OH) da dugc nghienciiu9 Bang 2.4: Cdc qua trinh oxi hoa nang cao khong nha tac nhan anh sang10 Bang 2.5: Cac qua trinh oxi hoa nang cao nhd tac nhan anh sang11 Bang 2.6: D^c trung bile xa dien tu cua anh sang14 Bang 3.1: Ti&i dp thirc hien &b tai18 Bang 4.1: K6t qua cac chi tieu cua mlu nuac thai dau vao25 Bang 4.2: KSt qua pH sau sue ozone theo thai gian25 Bang 4.3: Ket qua SS sau sue ozone theo thai gian26 Bang 4.4: KSt qua COD sau sue ozone theo thai gian27 Bang 4.5: Ket qua NH/ sau sue ozone theo thai gian28 Bang 4.6: K8t qua pH sau sue ozone vaUV theo thai gian31 Bang 4.7: Ket qua SS sau sue ozone va UV theo thai gian32 Bang 4.8: Ket qua COD sau sue ozone theo thai gian33 Bang 4.9: KSt qua NH4+ sau sue ozone va UV theo thai gian34 Bang 4.10: Ket qua pH sau sue ozone theo he so pha loang36 Bang 4.11: Ket qua SS sau sue ozone theo he so pha loang37 Bang 4.12: Ket qua COD sau sue ozone theo he so pha loang38 Bang 4.13: Ket qua NH,^ sau sue ozone theo he s6 pha loang 39 Bang 4.14: Ket qua pH sau sue ozone va UV theo he s6 pha loang 41 Bang 4.15: Ket qua SS sau sue ozone va UV theo he s6 pha loang 42 Bang 4.16: Ket qua COD sau sue ozone va UV theo he so pha loang44 Bang 4.17: Ket qua NH4+ sau sue ozone va UV theo he so pha loang45 GVHD: ThS Truomg KiSn TitoTrang v SVTH- mVatiTMng Khoa hum tdt nghep Lop DH10MT 4.2 Ket qua cac chi tieu cua mau niroc thai theo he so pha Ioang 4.2.1 Kit qua cac chi tieu cua mo hinh sir dung ozone a Chi tieu pH Bang 4.10: Kit qua dopHsau sue ozone theo he so pha Ioang Thdi gian (phut) 240 Ioang (%) 100% NT 75% NT 50% NT 25% NT 100% NT pH 6.39 6.52 6.65 6.79 8.19 He so pha 75% •NT 50% NT 25% NT 7.89 8.01 8.21 Bieu bieu dien pH 9.0 8.5 8.21 8.19 8.01 7.89 8.0 00 phut D 240 phut 7.0 6.65 6.5 6.39 6.79 6.52 6.0 100%NT 75%NT 50%NT 25%NT He so pha Ioang (%) Hinh 4.14: Bieu bieu dien sic thay doipHtheo he so pha Ioang cua mo hinh sic dung ozone Qua bieu cung nhu bang a tren, ta thdy pH tang qua cac lln pha Ioang sau sue ozone 240 phut Trong do, pH thip nhdt a he so pha Ioang 75% nude thai vdigia tri pH = 7.89 va cao nhit d he sd pha Ioang 25% nude thai vdi gia tri pH = 8.21 GVHD: ThS TneffngKiin Tho SVTH: Ho Van Thdng Trang 36 Khda limit tdt ngliep L&p DH10MT b Chi tieu SS Bang 4.11: Kit qua SS sau sue ozone theo he so pha loang Thoi gian (phut) 240 loang (%) 100% NT 75% NT 50% NT 25% NT 100% NT 75% NT 50% NT 25% NT SS (mg/1) 430 393 345 297 243 217 180 133 He so pha Bieu biiu dien SS 500 450 430 400 P| a- 300 243 MM I1 250 CO CO 200 150 100 50 11 i 350 M 1i _ 345 ni WrA iiisn if HO phut O240 phut 297 W ':A if 133 — ^-V p} M 100%NT 75%NT 50%NT 25%NT He so pha loang (%) Hinh 4.15: Biiu biiu diin su thay doi SS theo hi so pha loang cua mo hinh sic dung ozone - Qua bang 4.11 va hinh 4.15 ta thiy, luang SS luon giam theo he so pha loang sau,khi sue ozone 240 phut, hrong SS giam dao dpng khoang 164 - 187 SS mg/1 Trong do, sue ozone a he s6 pha loang 25% nude thai thi hiong SS giam thip nh^t (giam 164 SS mg/1), lugng SS giam cao nhat d he so 100% nude thai (giam 187 SS mg/1) Qua cac Ian pha loang va sau sue ozone 240 phut thi SS giam: GVHD: ThS Tmong Kiin Thq SVTH: H6 Van Thdng Trang37 Khda ludn tdt nghep L&p DH10MT + he s6 100% nude thai dat 43.5% + d he s6 pha loang 75% nude thai dat 44.8% + he s6 pha loang 50% nude thai dat 47.8% + he s6 pha loang 25% nude thai dat 55.2% - Theo k6t qua phan tich thi khong hop ly vi qua trinh xu ly ozone lam tang SS Su giam co thl la anh hudng cua tam luge can c Chi tieu COD Bang 4.12: Kit qua COD sau sue ozone theo he so pha loang- Thoi gian (phut) 240 loang (%) 100% NT 75% NT 50% NT 25% NT 100% NT 75% NT 50% NT 25% NT COD 5048 4693 3982 3270 2915 2541 1866 1306 He s6 pha (rag/1) Bieu bieu dien.'COD 100%NT 75%NT 50%NT 25%NT He so pha loang (%) Hinh 4.16: Bieu bieu dien su thay doi COD theo he so pha loang cua mo hinh su dung ozone GVHD: ThS Tritffng Kien Tlw SVTH: Hd Van Thing Trang 38 Khoa luan tdt nghep L&pDHlOMT - Qua bang 4.12 va hinh 4.16 ta thiy, luong COD luon giam theo he so pha loang sau sue ozone 240 phut, luong COD giam dao dong khoang 1964 - 2152 COD mg/1 Trong do, sue ozone a he so pha loang 25% nude thai thi luong COD giam thdp nhlt (giam 1964 COD mg/1), luong COD giam cao nhfit a hS s6 pha loang 75% nude thai (giam 2152 COD mg/1) Qua cac Ian pha loang va sau sue ozone 240 phut thi COD giam: + CJ he s6 100% nude thai dat 42.3% + CJ he s6 pha loang 75% nude thai dat 45.9% + d he s6 pha loang 50% nude thai dat 53.1% + CJ he s6 pha loang 25% nude thai dat 60.1% d Chi tieu NH/ Bang 4.13: Ket qua NH^ sau sue ozone theo he so pha loang Thdi gian (Phut) He so pha loang (%) NH4+ 240 100% NT 75% NT 50% NT 25% NT 100% NT 75% NT 50% NT 25% NT 28.5 27.8 26.4 25.5 24.3 23.6 21.3 18.7 (mg/1) GVHD: TltS TmongKien Thp SVTH: Ho Van Tlidng Trang39 Khoa Inan tdt nghep Lop DH10MT Bieu bieu dien NH4+ 40 35 30 6J) s 28.5 27.8 •24.3 BI23.6 ^4 25 25.5 i H'* 100%NT 75%NT 50%NT 25%NT' He so pha loang (%) 20 15 10 ih ? 240 phut —I Hinh 4.17: Bieu bieu dien su thay doiNH/ theo he so pha lodng cua mo hinh sic dung ozone - Qua bang 4.13 va hinh 4.17 ta thly, lugng NH4+ luon giam theo he s6 pha loang sau sue ozone 240 phut, lugng Nil^ giam dao (long khoang 4.2 - 6.8 NH4+ mg/1 Trong do, sue ozone a he s6 100% nuac thai va 75% nuac thai thi lugng NH4+ giam thdp nhit (giam 4.2 NHLi+ mg/1), lugng NH4+ giam cao nhat a he so pha loang 25% nuoc thai (giam 6.8 NfLi+ mg/1) Qua cac Ian pha loang va sau sue ozone 240 phut thi NH4+ giam: + he s6 100% nude thai dat 14.7% + he so pha loang 75% nude thai dat 15.1% + he s6 pha loang 50% nude thai dat 19.3% + he s6 pha loang 25% nude thai dat 26.7% GVHD: ThS Truffng Kiin Tito SVTH: H6 Van Thdng Trang 40 Khda lufin tdt hghep Lop DH10MT Bieu bieu dien pH 9.0 8.38 8.5 8.34 8.15 7.93 8.0 D 240 phut 7.5 7.0 6.65 6.79 6.52 6.5 6.0 100%NT 75%NT 50%NT 25%NT He so pha loang (%) Hinh 4.19: Bieu bieu dien su thay doipH theo he so pha loang cua mo hinh sic dung ozone vd UV Qua bi^u cung nhu bang a tren, ta thay pH tang qua cac Ian pha loang sau sue ozone va UV 240 phut Trong do, pH thdp nhdt a he s6 75% nuac thai vdi gia tri pH = 7.93 va cao nhat a he so 100% nude thai vdi giatripH=8.38 b Chi tieu SS Bang 4.15: Kit qua SS sau sue ozone vd UV theo he so pha loang Thoi gian (phiit) 240 loang (%) 100% NT 75% NT 50% NT 25% NT 100% NT 75% NT 50% NT 25% NT SS (rag/1) 430 393 345 297 220 193 157 107 He s6 pha GVHD: ThS TrmmgKiin Tlip SVTH: Hd Van Thang Trang 42 Khoa Iiitjn tdt nghep L&p DH10MT Bieu biiu dign SS 500 450 400 350 300 250 200 so 150 100 50 47 n Kl 393 mm in m m 297 m ——1||— i If "I u 345 SO phut 0240 phut ^157 ^ I i I^ m ^B 107 11in 100%NT 75%NT 50%NT 25%NT He s6 pha loang (%) Hinh 4.20: Bieu biiu diin su thay doi SS theo he so pha lodng cua mo hinh sic dung ozone va UV - Qua bang 4.11 va hinh 4.20 ta thay, lugng SS luon giam theo he s6 pha loang sau sue ozone va UV 240 phut, lugng SS giam dao dpng khoang 188 - 210 SS mg/1 Trong do, sue ozone va UV a he s6 pha loang 50% nude thai thi lugng SS giam thip nh^t (giam 188 SS mg/1), lugng SS giam cao nhit a he s6 100% nude thai (giam 210 SS mg/1) Qua cac lln pha loang va sau sue ozone + UV 240 phut thi SS giam: + O he so 100% nude thai dat 48.8% so vdi mo hinh sue bang ozone thi hieu qua cao hon Hieu suat giam tot hon 5.3% + O he so pha loang 75% nude thai dat 50.1% so vdi mo hinh sue bang ozone thi hieu qua cao hon Hieu suat giam tot hon 5.3% + CJ he s6 pha loang 50% nude thai dat 54.5% so vdi mo hinh sue bdng ozone thi hieu qua cao hon Hieu suit giam t6t hon 6.7% GVHD: ThS Tntmig KiSn Tho SVTH: Hd Van Thing Trang 43 Khoa limn tdt ngliep L&p DHJOMT + d he s6 pha loang 25% nude thai dat 64% so voi mo hinh sue bing ozone thi hieu qua cao hon Hieu suat giam tot hon 8.8% - Theo ket qua phan tich thi khong hop ly vi qua trinh xu ly ozone va UV lam tang SS Str giam co the la anh huong ciia tam luge can c Chi tieu COD Bang 4.16: Kit qua COD sau sue ozone va UV theo hi so pha loang Thoi gian (phut) He s6 pha loang (%) COD (mg/1) 240 100% NT 75% NT 50% NT 25% NT 100% NT 75% NT 50% NT 25% NT 5048 4693 3982 3270 2479 2079 1493 1075 Bieu biiu dien COD 100%NT 75%NT 50%NT 25%NT He so pha loang (%) Hinh 4.21: Biiu biiu dien su thay doi COD theo hi so pha loang cua mo hinh sic dving ozone va UV GVHD: ThS TruffngKien Tho SVTH: Hd Van Thdng Trang 44 Khoa hum tdt nghepLop DH10MT - Qua bang 4.12 va hinh 4.21 ta My, hrpng COD ludn giam theo he sd pha loang sau sue ozone va UV 240 phut, lupng COD giam dao ddng khoang 2195 - 2614 COD mg/1 Trong do, sue ozone va UV d he s6 pha loang 25% nude thai thi lupng COD giam thlp nhit (giam 2195 COD mg/1), lupng COD giam cao nhdt d he sd pha loang 75% nude thai (giam 2614 COD mg/1) Qua cac lln pha loang va sau sue ozone + UV 240 phut thi COD giam: + Ci hd so 100% nude thai dat 50.9% so vdi mo hinh sue bang ozone thi hieu qua cao hon Hieu suit giam tdt horn 8.6% + d hd sd pha loang 75% nude thai dat 55.7% so vdi mo hinh sue bing ozone thi hieu qua cao hon Hieu suat giam tdt hon 9.8% + he sd pha loang 50% nude thai dat 62.6% so vdi md hinh sue bang ozone thi hieu qua cao hon Hieu suat giam tdt hon 9.5% + d he sd pha loang 25% nude thai dat 67.1% so vdi md hinh sue bang ozone thi hieu qua cao hon Hieu suat giam tdt hon 7% d Chi tieu NH4+ Bang 4.17: Kit qua NH^ sau sue ozone va UV theo hi so pha loang Thdi gian (phut) 240 loang (%) 100% NT 75% NT 50% NT 25% NT 100% NT 75% NT 50% NT 25% NT NH4+ 28.5 27.8 26.4 25.5 22.9 21.9 19.2 17.3 He so pha (mg/I) GVHD: ThS Truffng Kien ThpTrang 45 SVTH: Hd Van Thang Khoa lunn tdt nghep L6p DH10MT Bieu bieu dien NH4+ 100%NT 75%NT 50%NT 25%NT He so pha losing (%) Hinh 4.22: Bieu bieu dien su thay doi NH/ theo he so pha loang cua mo hinh sic dung ozone vd UV - Qua bang 4.13 va hinh 4.22 ta thiy, hrgng NH4+ ludn giam theo he s6 pha loang sau sue ozone va UV 240 phut, lugng NH4+ giam dao ddng khoang 5.6 - 7.2 NH4+ mg/1 Trong do, sue ozone va UV d he s6 100% nude thai thi lugng NH4+ giam thdp nhdt (giam 5.6 NH4+ mg/1), lugng NH4+ giam cao nhlt a he so pha loang 50% nude thai (giam 7.2 NH4+ mg/1) Qua cac Ian pha loang va sau sue ozone + UV 240 phut thi NH/ giam: + CS he so 100% nude thai dat 14.7% so vdi mo hinh sue bing ozone thi hieu qua cao hon Hieu sudt giam tot hon 4.9% + Ci he so pha loang 75% nude thai dat 15.1% so vdi mo hinh sue bang ozone thi hieu qua cao hon Hieu suit giam tdt hon 6.1% + CS he so pha loang 50% nude thai dat 19.3% so vdi mo hinh sue bang ozone thi hieu qua cao hon Hieu suat giam tot hon 8% + he so pha loang 25% nude thai dat 26.7% so vdi md hinh sue bang ozone thi hieu qua cao hon Hieu suat giam tdt hon 5.5% GVHD: ThS Trirong Kien Tito SVTH: Hd Van Thing Trang 46 Khoa ludn tdt nghepLop DH10MT CHITONG V: MET LUAN VA KIEN NGHI 5.1 Kit luan - Tu kit qua nghien cuu kha nang xii ly nude thai che biln mam cua mo hinh sur dung ozone va mo hinh sir dung he ozone + den UV thong qua cac chi tieu pH, SS, COD, NH4+, dugc kit qua nhu sau: + Chi tieu pH sau khoang thdi gian xu ly cua hai mo hinh deu tang theo thai gian va he so pha loang Nhung d mo hinh su dung ozone pH luon thap han a mo hinh su: dung ozone va UV + Hieu suat xii ly cac chi tieu cua mo hinh sir dung ozone: •Theo thai gian: SS dat 43.5%, COD dat 42.3%, NH4+dat 14.7% •Theo he so pha loang: VHe si pha loang 75% nude thai: SS dat 44.8%, COD dat 45.9%, NH4+dat 15.1% ^He sd pha loang 50% nude thai: SS dat 47.8%, COD dat 53.1%,NH4+datl9.3% ^He si pha loang 25% nude thai: SS dat 55.2%, COD dat 60.1%, NH4+dat 26.7% + Hieu suat xii ly cac chi tieu cua mo hinh su dung ozone va den UV: •Theo thai gian: SS dat 48.8%, COD dat 50.9%, NH4+ dat 19.7% •Theo he sd pha loang: VHe sd pha loang 75% nude thai: SS dat 50.1%, COD dat 55.7%, NH4+dat 21.2% VHe si pha loang 50% nude thai: SS dat 54.1%, COD dat 62.6%, NH,+ dat 27.3% • VHe sd pha loang 25% nude thai: SS dat 64%, COD dat 67.1%, NH4+ dat 32.2% + Chi tieu SS sau khoang thai gian xu ly cua hai mo hinh did giam theo thai gian va he so pha loang Nhung theo cong nghe oxi hoa nang cao thi SS tang, deu chiing to la anh hudng cua tarn luge can GVHD: ThS Truong Kien ThpTrang 48 SVTH: H6 Van Thdng Klwa limn tdt ng/tepL&p DH10MT + Chi tieu NH4+ sau khoang thai gian xu ly cua hai mo hinh deu giam theo thai gian va he so pha loang nhung khong dat hieu cao nen viec xu ly NH4+ b!ng vi sinh la thich hap han -Bilu do, cho ta kit luan xii ly nude thai chi biln mim bang mo hinh ozone va UV d^it hieu qua cao han so vdi mo hinh bang ozone -Qua kit qua phan tich ta thiy, cong nghe oxi hoa nang cao (ozone + UV) la cong nghe dat hieu qua cho viec xu ^^ nude thai che bien m^m cu th^ d day la chi tieu COD 5.2 Kiln nghi -Cung tu qua trinh thuc hien de tai, toi nhan thay cd mot so van de cln phai tilp tuc nghien cuu sau them de cd the danh gia toan dien ve qua trinh oxi hoa nang cao ma cu thl d day la.su dung he ozone va UV de xu ly nude thai ch! biln m^m nh^m muc dich dua cong nghe vao ap dung cong thuc te: + Can xu ly sa bo nude thai che bien mam nham loai bo mot so tap chat anh hudng den hieu qua xu ly cua he ozone va UV + Can thuc hien nhieu Ian tren cung mot loai nude thai de tim hieu qua xu ly t6t nhlt + Can nghien cuu nhieu han nOa cho tat ca cac loai nude thai (thuy san, keo dvra, con, ), khong gidi han chi la nude thai che bien mam -C8n tilp tuc nghien cuu tren mot so he oxi hoa bac cao khac nhu O3AJV/H2O2, nh^m tim phuang phap hieu qua dl xu ly nude thai chi bien mim GVHD: ThS TruongKien TitoTrang 49 SVTH: Ho Van Thing Khoa limn idt nghepLop DH10MT TAl LIEU THAM KHAO Adam, Cook et Rattagool 1985 Quality and quality changes of fresh fish Food and agriculture organizaion of the United Nations Cokay E 2002 Removal of Refractory Organic Substances with Chemical Oxidation Dokuz Eyliil University graduate of natural and applied sciences Gurol, M D., and Vatistas, R 1987 "Oxidation of Phenolic Compounds by Ozone and Ozone + UV Radiation: A ComparativeStudy" Water Research 21, 8, 895 - 900 Lai et al 1995 Oxidation of simazine: ozone, ultraviolet and combine ozone/ultraviolet oxidation, Water Environ Res, pp 340 - 346 Lam Minh TriSt 2006 Xfr ly nude thai thi va cong nghiep - Tinh toan thiSt ki cong trinh NXB Dai h