Tính toán thiết kế hệ thống xử lý nước thải sinh hoạt cho thành phố long xuyên đến năm 2020

TRlTCXNG DAI HOC AN GIANG KHOA KY THUAT - CONG NGHE - MOITRUCING VO HUX HUYEN TRAM TINH TO AN THIET KE HE THONG XU" LY NlTdC THAI SINH HO AT CHO THANH PHO LONG XUYEN DEN NAM 2020 TRUCiNG D^I HOC AN GIANG THtfVIEN KHOA LUAN TOT NGHIEP GVHD: Th.S Nguyen Thanh Hung An Giang, 05/ 2013 LOT CAM ON Trudc tien toi xin chan cam cm Ban Giam hieu Truang Dai hoc An Giang, Ban Chii nhiem Khoa Ky Thuat - Cong nghe - Moi Tnrang da tan tinh giup d9 toi suot qua trinh hoc tap va thirc hien khoa luan tot nghiep Toi xin chSn cam on quy thay co cimg cac'anh chi Khoa da nhiet tinh giup da, dqng vien va chia se kinh nghiem giup em hoan tot bai khoa luan tot nghiep Xin chan cam an quy thay Nguyen Thanh Hung da nhiet tinh giang day, hmmg dan phuong phap nghien civu, cung cap tai lieu nghien ciiu, kien thirc thirc te, chia se kinh nghiem va giup toi hoan de tai Cuoi ciing xin cam an gia dinh, ban be da luon ben canh giup da, dong vien toi! NHAN XET CUA GlAo VIEN HU^fNG DAN Long Xuyen, ngay.^thang.^^nam 2013 Giao vien huang dan Ths Nguyen Thanh Hung NHAN XET CUA GIAO VIEN PHAN BIEN Long Xuy^n, ngayi^thang.^nam 2013 Giao vien phan bien Than^ NHAN XET CUA GIAO VIEN PHAN BIEN Long Xuyen, ngay/^^.thangA^nam 2013 Giao vien phan bien TOM TAT Thanh ph6 Long Xuyen la ph6 trung tam cua tinh An Giang, la mot ph6 tre nang (long vdi toe dp thi hda nhanh Tuy nhien, hien nay, nude thai sinh hoat cua dupe xa thai true tiep song, kenh rach ma chua cd he thong xu ly nude nen ngudi dan phai doi mat vdi van de nhiem cang nghiem trpng Noi dung thuc hien cua de tai la udc tinh ddn so Long Xuyen, tinh toan luu lupng nude thai, xac dinh phan nude thai den nam 2020 Tir toi dua cac phuong an xu ly, tinh toan thiet kl vdi chuan nude thai dau theo QCVN 24:2009/BTNMT, cot A va du toan kinh phi cho cac phuong an Tren co sd do, phuong an hieu qua nhlt dupe lua chpn va the hien chi tiet tren ban ve kT thuat Ket qua cua de tai la udc tinh dupe dan so Long Xuyen den nam 2020 la 284.534 ngudi va luu lupng nude thai trung binh den thdi diem la 37.182 m3/ngay De tai xac dinh dupe phan nude thai gom cac thong so quan trpng nhu BOD5, SS, Nitp Tir cac so lieu ban dau, hai phuong an dupe dua de xu ly nude thai Long Xuyen den nam 2020 la cong nghe be hoat dpng gian doan theo me (SBR) va cong nghe thiSu khi, hiu kill ket hop (AO) Sau tinh toan thidt kd va du toan kinh phi cho hai phuong an tren, phuong an cong nghe hoat dpng gian doan theo me (SBR) dupe lira chpn dat tieu chuan de va cd hieu qua kinh te hern vdi tong chi phi xay dung la 171.370.580.000 VND, chi phi van hanh la 19.772.373 VND/ngay va chi phi cho xu ly nude thai la 1.184 VND/m3 nude thai Cuoi cirng de tai the hien dupe cac ban ve chi tiet cong trinh xii ly nude thai cho Long Xuyen theo phuong an chpn gom: ban ve quy trinh cong nghe, ban ve mat bang tong the, ban ve mat cat theo nude, ban ve chi tiet cac cong trinh don vi ABSTRACT Long Xuyen city is the economic center of An Giang province, a dynamic, young city with high-speed urbanization However, domestic sewage of the city is still discharged directly into rivers, canals without wastewater treatment system Therefore, citizens are facing pollution which gets worse The aims of this research are calculating domestic sewage flow of Long Xuyen city up to 2020, determining the compositions of wastewater, producing options of wastewater treatment system, designing and estimating the cost for each option then selecting the best option The effluent has to meet columns A in QCVN 24:2009/BTNMT The best option is described with the technical drawings The results of this research showed that domestic sewage flow of Long Xuyen city up to 2020 was 37.182 mVday The research also determined some important constituents of wastewater such as BOD5, SS, Nitrogen From preliminary data, sequecing batch reactor (SBR) and Anoxic/Aerobic (AO) were proposed as two methods to treat domestic wastewater of Long Xuyen city up to 2020 After designing and estimating cost for the two options, SBR were selected because of effective treatment and economization The costs to use SBR as followed: the total construction cost was 171.370.580.000 VND, the operating cost was 19.772.373 VND/day and the wastewater treatment cost was 1.184 VND/m3 Finally, this research demonstrated teaniqual drawings of wastewater treatment system for Long Xuyen city to 2020 base on selected methods (SBR) It included technology process drawing, master plan drawing, level drawing and detailed designed drawings for each unit MUC LUC LCSICAmONi TOM TAT.'ii DANHSACHBANGvii DANH SACH HINHvii DANH SACH CAC TIT VIET TATx Chuang 1: M