Nghiên cứu đánh giá hiệu quả xử lý nước thải nhà máy thuốc bảo vệ thực vật bằng hệ oxy hóa nâng cao o3 UV h2o2

TRU^NG B^I HOC AN GIANG KY THUAT - CONG NGHE - MOITRUO HO THI TRUC LIA NGHIEN ClTU DANH GIA HIEU QUA Xf LY NU'6C THAI NHA MAY THUOC BAO VE THUC VAT BANG HE OXY HOA NANG CAO (O3/UV/H2O2) TRIJONG DAI HQC AN GIANG THUVIEN KHOA LUAN TOT NGHIEP GVHD: ThS TRlTONG KlEN THO GVPB: ThS NGUYEN THANH HUNG ThS LE THI CAM CHI An Giang, 05/2013 LOT CAM ON Trong qua trinh hoc tap tai Truang Dai hoc An Giang, dugc quy Thay Co true tiep giang day, truydn dat nhung kidn thuc bo ich, chinh la nhung nen tang ca ban, la nhung hanh trang vo ciing quy gia Dae biet, qua trinh thuc hien dd tai khoa luSn t6t nghiep iin dau tien dugc tidp can vai viec nghien ciiu de tai thuc nghiem nen gap khong it kho khan nhung nhd dugc sir giup da tan tinh va nhilng lcri dong vien quy gia cua moi nguai da giup toi hoan bai khoa luan t6t nghiep Qua day, toi xin dugc gai lefi cam on den ho: Cam an Ban giam hieu Truang Dai hoc An Giang, Khoa Ky thuat - Cong nghe - Moi truang, quy Thay Co Bo mon Moi truang va Phat trien Ben vung da trang bi kien thuc cho toi suot qua trinh hoc tap Toi chan cam an thay Truang Kidn Tho, du rat ban ron vai cong viec nhung thay van danh thai gian chi bao, huang dan, tao didu kien de toi co the hoan bai khoa luan Ben canh do, toi cung xin dugc g&i loi cam an tai cac c6j chu, anh, chi Trung tarn ting dung Tien bo Khoa hoc va Cong nghe, Xin cam an chu An, chi Trinh, anh Han, a Quoc Cam on moi nguai da giup da, dong gop ^kien cho toi qua trinh thuc hien de tai Cam an thay Nguyen Trung Thanh, co Nguyen Hong Nhat, can bo phu trach phong thi nghiem Khoa Ky thuat - Cong nghe - Moi truang da giup da va ho trg toi qua trinh thi nghiem Cam an Ban Giam d6c nha may thudc bao ve thuc vat huyen Chau Thanh va a Tam da nhiet tinh giup d& qua trinh lay mau nuac thai Ngoai ra, toi xin gai lai cam an rlt muc chan dSn cac ban cua toi Cam an cac ban nhung nam qua cung gin bo, cimg hoc tap, da giup da toi qua trinh thuc hien mo hinh nghien cuu, da co vu, dong vien tinh thin toi nghien cuu gijp vin d^ Trong qua trinh nghien cuu de tai va viSt bai khoa luan vai kiSn thuc va thai gian han chS nen noi dung khdng tranh khoi nhung thiSu sot Kinh mong nhan dugc sir gop y, nhan xet tir phia quy Thiy, Co! Toi xin chan cam an! LongXuyen, thang nam 2013 Sink vien thvic Men H6 Thi True Lia NHAN XET CUA GIANG VIEN Hl/OfNG DAN Long Xnyen, thang nam 2013 Th.S Trirong Kiin Tho NHAN XET CUA GIANG VIEN PHAN BIEN LongXuyen, ngayftfT thang ^ nam 2013 Th.S Nguyln Thanh Hung NHAN XET CUA GIANG VIEN PHAN BIEN LongXuyen, thang nam 2013 Th.S Le Thi Cam Chi NGHIEN CUtT BANH GIAHIEU QUA XU"LY NUOC THAI NHA MAY THUOC BAO VE THlTC VAT BANG HE OXY HOA NANG CAO (O3/UV/H2O2) Tom tat: Nghien criu sir dung cac qua trinh oxy hoa bac cao la: O3/UV va O3/UV/H2O2 nham danh gia hieu qua xir ly COD, TSS va anh huong cua pH den qua trinh xir ly, tir so sanh hieu qui xir ly cua he O3AJV/H2O2 doi vdi he O3/UV Hieu qua loai bo COD va TSS dugc khao sat bang each thay d6i n6ng dp nuoc thai theo he so pha loang va lidu lupng H2O2 thai gian gia, ham luong ozone sri dung la g/h va cong suat den UV la 30W KSt qua nghien ciru cho thay, xri ly nuac thai thuoc BVTV bang qua trinh oxy hoa bac cao dung O3/UV/H2O2 dat hieu qua cao han chi dung O3/UV vai hieu suit xir ly COD va TSS cao han tuang ring la 23% va 58,32% Dong thai, qua trinh nghien ciiu cac gia tri pH chenh lech khong Ian nen khong anh huong nhieu den ket qua phan tich Qua trinh oxy hoa bac cao dung O3AJV/H2O2 co the ring dung nhu mot phuang phap hieu qua de xir ly nude thai thuoc BVTV RESEARCH OF EVALUATION EFFICIENCY WASTEWATER TREATMENT OF COMPANY DRUG PLANT PROTECTION BY SYSTEM ADVANCED OXIDATION (OZONE COMBINATION WITH HYDROGEN PEROXIDE AND UV-RADLATION) Abstract: This research application of advanced oxidation processes including: O3/UV and O3/UV/H2O2to evaluate treatment efficiency of COD, TSS and pH influence to treatment process, which compare efficiency treatment of O3/UV/H2O2 with of O3/UV The efficiency of COD and TSS removal is investigated by changing concentration wastewaters dilution coefficent and dose of H2O2 in time hour, content ozone use is 4g/h and lamp power is 30W The research results showed that wastewater treatment of drug plant protection by advanced oxidation process use O3/UV/H2O2 to get efficiency higher when only used O3/UV with efficiency treatment COD and TSS higher corresponding is 53% and 58,32% Beside, this research process about pH different don't large, so don't more influence to analysis result Advanced oxidation process using O3/UV/H2O2 is applied as a possible method for drug plant protection wastewaters treatment Khda ludn tdt nghiepL&pDHlOMT MUC LUC Trang MUC LUCi DANH MUC fflNHiii DANHMUCBANGiv DANH MUC TlTNGU'VlfiTTATv CHl/ONG 1: MO flAU1 CHLfOfNG 2: LU"0C KHAo TAl LIEU3 2.1.T6ng quan vSthu^c BVTV3 2.1.1.ThuSc BVTV la gl?3 2.1.2.Phan loai thudc BVTV3 2.1.3.Tdc hqi cua thudc BVTV.3 2.2.T6ng quan v cong nghe xu ly nuac thai thu6c BVTV4 2.3.Tong quan ve qua trinh oxy hoa nang cao nuac thai5 2.3.1.Binh nghia ve qua trinh oxy hoa nang cao5 2.3.2.Nhiing hqn che cua qua trinh oxy hoa hoa hoc bang cdc tdc nhan oxy hoa thong thuang5 2.3.3.Cdc qua trinh tqo gdc Hydroxyl (*OH)6 2.3.4.Nhiing im viet cua qua trinh phan huy oxy hoa bang gdc tu Hyroxyl(*OH)7 2.3.5.Phan loai cdc qua trinh oxy hoa nang cao10 2.3.6.Cdc qua trinh oxy hoa nang cao tren caso ozone11 2.3.7.Cdc qua trinh oxy hoa nang-cao nhd tdc nhan dnh sang13 CHUONG 3: PHUONG TIEN VA PHlTONG PHAP NGHIEN CUtf17 3.1.Doi tugng nghien cuu17 3.2.Thai gian nghien cuu17 3.3.Muctieu nghien cuu17 3.3.1.Muc tieuchung.17 3.3.2.Muc tieu cu thi18 GVHD: Ths TruongKien ThoTrang i SVTH: Hd Thi True Lia Khoa ludn tdt nghiepLapDHlOMT 3.4.Noi dung nghien ciiu18 3.5.Phircrng tien va vat lieu nghien cuu18 3.6.Phircrng phap nghien cuu18 3.6.1.Phuongphap tham khao tai lieu18 3.6.2.Phuong phap lay mau18 3.6.3.Phuangphapphdn tich19 3.6.4.Phuangphdp bo trimohinh thucnghiem20 CHtTONG 4: KET QUA THAO LUAN24 4.1.Mo hinh xur ly nude thai thudc BVTV blng he O3/UV24 4.1.1.Chi tieupH "24 4.1.2.ChitieuCOD25 4.1.3.ChitieuTSS:26 4.2.Mo hinh xu ly nude thai thudc BVTV bing he O3/UV/H2O229 4.2.1.ChitieupH.29 4.2.2.ChitieuCOD30 4.2.3.ChitieuTSS31 CHlTONG 5: KET LUAN VA KIEN NGHI34 5.1 K^t luan34 5.2.KiSnnghj34 TAI LIEU THAM KHAO36 GVHD: Ths TruongKien ThoTrangii SVTH: H6 Thi True Lia Khoa luqn tdt nghiipLdpDHWMT DANH MUC HINH Trang Hlnh 3.1 Mo hinh he ozone + tia cue tim (O^UV)22 Hinh 3.2 Mo hlnh he ozone + lia cue tim (UV) + H2O2 (O3/UV/H2O2)23 Hlnh 4.1 Bleu bleu dien su thay ddipHtheo he so pha hang24 Hlnh 4.2 Biiu dS biiu diin su thay ddi ndng COD trudc vd sau xu ly theo he so pha hang25 Hlnh 4.3 Biiu biiu dien su thay ddi nong TSS trudc vd sau xit ly theo he so pha hang27 Hlnh 4.4 Mdu nude thai thudc BVTV sau gid xu ly bdng he O3/UV theo he sd pha hang28 Hinh 4.5 Mo hinh xit ly mtdc thai bang he O3/UV dang hoat dong28 Hinh 4.6 Biiu bieu dien su thay ddi chisopH theo lieu luong H2O229 Hinh 4.7 Biiu dd biiu diin su thay ddi ndng COD theo liiu luongH2O2 30 Hinh 4.8 Biiu dd biiu diin su thay ddi ndng TSS theo liiu luong H2O232 Hinh 4.9 Mdu nude thai sau qua trinh xu ly bdng hi O3/UV/H2O2 thai gian gid33 Hinh 4.10 Md hinh thuc nghiim xu ly nude thai thudc BVTV33 GVHD: Ths TruongKiin ThoTrang in SVTH: H6 Thi True Lia Khoa ludn tot nghiep LdpDHlOMT - Thu m^ll nude thai sau gicr xis ly va phan tich cac chi tieu a phong thi nghiem flen TTV F.iertnr May ozone p |=| Van H2O2 ,— I^T^ a"' r - _ i h =5^ May bom Hlnh 3.2 Mo hlnh he ozone + tia cue tim (UV) + H2O2 GVHD: Ths TruangKien Thq SVTRH6 Thi Trite Lia Trang 23 LopDHlOMT Khoa lugn tot nghiep CHlTONG 4: KET QUA THAO LUAN 4.1 Mo hinh xu- ly nirdc thai thu6c BVTV bang he O3/UV 4.1.1 ChltieupH Bang 4.1 Chi so pH ddu vao vd sau qua trinh xu ly theo he so pha bang Daura He s6 pha loang (% ) Dfiu vao 100% NT 8,29 7,77 pH 75% NT 50% NT 8,09 25% NT 7,88 7,83 10 8,29 8,09 7,88 7,83 100% NT 75% NT 50% NT 25% NT 7.77 O Dauvao He s6 pha loang (%) Hinh 4.1 Biiu 3d biiu diin su thay dSipH theo he sSpha bang Qua hinh va bang 4.1 ta thay chi so pH cteu giam qua cac lln pha loang Gia tri pH chi tang sau duoc dua vao xu ly, tang cao nhfit xu ly d nong nude thai 100% la 0,52 so vdi pH dSu vao D6ng thai, gia tri pH cao GVHD: Ths TruangKien Tho SVTH: Hd Thi True Lia Trang 24 L&pDHlOMT Khda ludn tot nghiep nhit a nOng dp 100% nude thai (pH = 8,29) va gia tri pH tMp nMt d ndng dp nude thai pha loang 25% (pH = 7,83) Khoang chenh lech giifa cac gia tri pH la khdng ldn lam qua trinh xu ly 4.1.2 CM lieu COD Bang 4.2 Ndng COD ddu vdo va sau qua trinh xti'ly theo he so pha loang He s6 pha loang (%) DSuvao 100% NT 75% NT 50% NT 25% NT COD trirdc xu ly 1600156014401089 (mgO2/l) 1600 COD sau xu ly 10881040 (mgO2/l) 1800160014001200- Q 1000- O 800- O 6004002000- 1600 1560 ^^ 1440 fl • • fl fl ^r^i I^Bm •Li •• LM \ 536 864 1089 fl BD_536 • 100% NT g i 75% NT 50% NT 25% NT He so pha loang (%) | • COD trudc xu ly ? COD sau xu ly | Hinh 4.2 Bieu bieu dien su thay doi ndng COD trudc va sau xu ly theo he so pha loang GVHD: Ths TruangKien Thq SVTH: Hd Thi True Liq Trang 25 Khoa lugn tdt nghiepLap DH10MT Qua bang va hinh 4.2 ta thay nong dp COD cung deu giam qua cac Ian pha loang Nong COD giam tuong umg vdi ti le pha loang va hieu suat sau xu ly d mdi nong dp mrdc thai pha loang nhir sau: -6 ndng dp 100% nude thai, hieu suit dat 32% (COD giam 512 mgO2/l) -Khi pha loang 75% nude thai, hieu suit dat 33,33% (COD giam 520 mgO2/l) -Khi pha loang 50% nude thai, hieu suit dat 40% (COD giam 576 mgO2/l) -Khi pha loang 25% nude thai, hieu suit dat 50,8% (COD giam 553 mgO2/l) Qua tinh toan tren, ta co thi thay hieu suat xu ly COD tang pha loang nude thai d nong dp cang thap, so vdi hieu suat xu ly khdng pha loang thi hieu suat: -Pha loang 75% nude thai cao hon 1,33% -Pha loang 50% nude thai cao hon 8% -Pha loang 25% nude thai cao hon 18,8% 4.1.3 Chi MuTSS Bang 4.3 Nong TSS ddu veto vet sau qua trlnh xu ly theo he so pha loang He s6 pha loang (%) Diuvao 100% NT 75% NT 50% NT 25% NT TSStru-dckhixuly (mg/1) 1100 TSSsaukhixu-ly^ ^ (mg/1) GVHD: Ths Truang Kiin ThoTrang 26 SVTH.-Hd Thi True Lia LapDHlOMT Khoa luan tot nghiep i 100% NT 75% NT50% NT25% NT He si pha loang (%) Ml TSS trade xu ly D TSS sau xu ly | Hinh 4.3 Bieu bieu dien su thay doi nong TSS trudcva sau xu ly theo he so pha loang Qua bang va hinh 4.3 ta thay, nong TSS giam tuong ling vdi ti le pha loang va hieu suat sau xil ly a moi nong nude thai pha loang nhu sau: -6 n6ng 100% nude thai, hieu suit dat 18,18% (TSS giam 200 mg/1) -Khi pha loang 75% nude thai, hieu suit dat 22,7% (TSS giam 245 mg/1) -Khi pha loang 50% nude thai, hieu suit dat 28,8% (TSS giam 284 mg/1) -Khi pha loang 25% nude thai, hieu suit dat 32% (TSS giam 263 mg/1) Qua tinh toan tren, ta cd the thay hieu suat xu ly TSS tang pha loang nude thai d nong cang thap, so vdi hieu suat xu ly khong pha loang thi hieu suat: -Pha loang 75% nude thai cao hon 4,52% -Pha loang 50% nude thai cao han 10,62% -Pha loang 25% nude thai cao hem 13,82% GVHD: Ths TrumgKien Tho SVTH: Hd Thi True Lia Trang27 LapDHlOMT Khoa lugn tot nghiep 4.2 Mo hinh xu ly nude thai thuoc BVTV b3ng he O3/UV/H2O2 4.2.1 ChitieupH Bang 4.4 Chi so pH ddu veto vd sail qua trinh xic ly theo lieu luqng H2O2 Daura Lieu Iuung H2O2 pH Dau vao ~ 7,782 ml ml 12 ml 8,17 7,92 7,72 16 ml ' 7,44 Lieu lup-ng H2O2 (ml) Hinh 4.6 Bieu bieu dien su thay doi chisopHtheo lieu luqngH2O2 Qua bang 4.4 va hinh 4.6 ta thiy, tang ligu luong H2O2 len thi pH cang giam din, pH dao dpng khoang 0,2 — 0,388 Xxt ly nuac thai theo he O3AJV/H2O2 thai gian gid thi gia tri pH cao nhit la 8,17 a li^u luang GVHD: Ths TrumgKien Thq SVTH: H6 Thi Trite Lia Trang 29 LapDHlOMT Khoa lugn tot nghiep ml H2O2 va gia tri pH thlp nhit la 7,44 a liiu lupng 16 ml H2O2 Gia tri pH thay doi khong dang ke qua trinh xii ly 4.2.2 ChitieuCOD Bang 4.5 Chi so COD tfdu vao va sau qua trinh xit ly theo lieu luang H2O2 Ddura Lieu Iupng H2O2 COD (mgO2/l) Dau vao 1000 ml ml 12 ml 16 ml 900 850 750 450 1200 1000 1000 e^