Đánh giá chất lượng nước sông sài gòn phục vụ cấp nước an toàn thành phố hồ chí minh

Đại Học Quốc Gia Tp Hồ Chí Minh TRƯỜNG ĐẠI HỌC BÁCH KHOA - NGUYỄN THỊ TUYẾT NAM LUẬN VĂN THẠC SĨ Chuyên ngành: QUẢN LÝ MÔI TRƯỜNG ĐÁNH GIÁ CHẤT LƯỢNG NƯỚC SƠNG SÀI GỊN PHỤC VỤ CẤP NƯỚC AN TỒN THÀNH PHỐ HỒ CHÍ MINH T H Ch Minh Tháng 12 năm 2010 : ……………………………………………………………………………………… ……………………………………………………………………………………… ……………………………………………………………………………………… 1: PGS.TS ……………………………………………………………………………………… ……………………………………………………………………………………… ……………………………………………………………………………………… 2: PGS.TS ……………………………………………………………………………………… ……………………………………………………………………………………… ……………………………………………………………………………………… , 14 p 2011 H : G G G H TS H ) H HQG p.H M TRƯỜNG ĐẠI HỌC BÁCH KHOA KHOA M I T NG CỘNG HOÀ XÃ HỘI CHỦ NGHIÃ VIỆT NAM Độc Lập - Tự Do - Hạnh Phúc -oOo Tp HCM, ngày 14 tháng năm 2011 NHIỆM VỤ LUẬN VĂN THẠC SĨ Họ tên học viên: NGU Ngày, tháng, năm sinh: 02/04/1985 Chuyên ngành: Q n 1- TÊN ĐỀ TÀI: Đ nh i ch t toàn thành ph H Ch Minh N TH TU T NAM Phái: N Nơi sinh: Tp HCM it n n n MSHV: 02608638 c n ài G n ph c v c p n c n 2- NHIỆM VỤ LUẬN VĂN: - Kh o t theo ộ - Đ nh i ch t - Đ n ph n t ch n n nh i ch t c ph c v n n c tiê c p n t ột i n ph p nh h i th c ài G n ph c v cho c p n c 01/2010 4- NGÀ HOÀN THÀNH NHIỆM VỤ: 12/2010 5- HỌ VÀ TÊN CÁN BỘ H ỚNG DẪN: TS NGU c ơn L ận văn thạc ĩ ã c Hội CÁN BỘ H ỚNG DẪN CHỦ NHIỆM BỘ M N Họ tên ch ) QUẢN LÝ CHU ÊN NGÀNH Họ tên ch ) n ài G n theo c n toàn v ch t o v ch t 3- NGÀY GIAO NHIỆM VỤ: Nội d n c n ch n n n ) nn c N TH V N HÀ ên ngành thông qua KHOA QL CHUYÊN NGÀNH Họ tên ch ) – , , – – , cho , – sông , , ) : : 2: , -i- 3: – 4: 5: 6: Abstract Saigon River is the important source for water supply in Hochiminh City (HCMC) However, its water quality is degrading gradually This study was conducted in the dry and rainy season of 2010 in order to assess its pollution standard polluted patterns and risk from these pollutants Results from this study could be used as the scientific bases to propose mitigation measures and management strategies for the river There were nineteen water samples along the Saigon River and its canals as well as the influent and effluent water supply samples from the Tan Hiep water supply treatment plant (WTP) were collected Monitoring water quality parameters include physical, chemical and microbiological parameters such as pH, Conductivity, COD, BOD5, DO, E.Coli, Total Coliforms, NDMA, pharmaceuticals and some selected metals The results show that downstream Saigon River was more polluted than upstream Total Coliform, E.Coli, organic matter, Fe, Mn and Cd had medium to high risk level, causing adverse effects to health of users as well as water safety supply Concentrations of NDMA and pharmaceuticals in the Saigon River and effluent sample of Tan Hiep WTP reached the maximum concentration limitation of WHO and had no adverse effects to human health Water after treatment of Tan Hiep WTP is quite good and safe to consumers - ii - Hình 3.1 Bả đồ hạ l s S Gò ò S đồ 3.5 C l l s S Gò l l s đ s S Gò đ đ đ đ SS ò S Gò , TDS s s S Gò S Gò c 4.5 đ s S Gò c 4.6 đ s S Gò c 4.7 s S Gò 4.8 s 4.11 4.12 c s S Gò S Gò s 2008 S Gị sơng S Gị s c s c S Gò c 4.13 s S Gò s 4.15 s l s s 4.19 s 4.21 l ả s s S Gò s S Gò s S Gò s s ò s đ l đ s ả s ò Fe s S Gò s đ l ò l s l l ò S Gò s l đ s l ò l s S Gò s đ l S Gò l l ò l s s ò ò sôn S Gò s đ s l đ s S Gò s đ c 4.22 4.25 S Gò s ò S Gò s s ò l S Gò l đ S Gò l l đ ò đ s S Gò 4.28 ả s l s l S Gò ò l s đ l s 4.31 Cu đ đ S Gò s ) l ạ ả s l l s đ s Hình 4.34 Nồ l l s s, ò l s s l s, Cu, N S Gò ò s l ò l s , Pb, Ag S Gò đ l S Gò s S Gò đ Cd, Pb Ag hòa tan v trí khảo sát sơng Sài Gịn s s s S Gò s s h 4.35 s s S Gò 4.33 ả s ò ả s 4.32 ò đ d, Pb ò s , V, Ba ò s ả s S Gò 4.38 l l ả s s l l S Gò 4.40 ò s 5.1 S Gò s ả s S Gò đ s 5.2 ò s s l S Gò s 1.1 B ng c sơng Sài Gịn B ng 3.2 : Nhu cầ c cung c 3.3: Vị trí quan trắ B ng 3.4 Vị ì D i v i sơng Sài Gịn c m t S TN&MT t nh Tây Ninh th c hi n ểm quan trắc n S TN&MT c hi n 3.5: Vị trí tr m quan trắ c m t th y ă c b o v môi ờng TP.HCM th c hi n 3.6 4.1 4.2 N y ị y ) – TKN(mg/l) V SG21 SG20 SG19 SG18 SG17 SG16 SG15 SG9 DT vào Mean mùa khô mùa mưa 4.6 3.6 3.4 2.8 3.3 3.1 2.1 1.7 3.4 2.1 4.3 2.2 3.7 3.9 1.4 2.5 5.6 3.2 V SG21 SG20 SG19 SG18 SG17 SG16 SG15 SG9 DT vào Mean mùa khô mùa mưa 6.96 6.62 6.88 6.25 6.34 6.68 6.94 6.51 6.85 6.26 6.39 5.58 6.22 5.43 6.14 5.34 7.84 6.28 7.37 6.86 7.53 6.89 V SG21 SG20 SG19 SG18 SG17 SG16 SG15 SG9 DT vào Mean mùa khô mùa mưa 89 134 112 143 89 205 48 54 50 12 30 32 26 24 87 61 18 34 V SG21 SG20 SG19 SG18 SG17 SG16 SG15 SG9 DT vào Mean mùa khô mùa mưa 0.143 0.046 0.141 0.073 0.113 0.040 0.077 0.138 0.053 0.135 0.040 0.144 0.026 0.173 0.137 0.205 0.023 0.214 0.036 0.285 0.099 0.099 Đ cứng (mg/l) Std.Dev Mean khô mưa mùa khô mùa mưa 1.1 0.5 852 338.0 0.8 0.5 785.3 349.3 1.5 0.5 671.3 303.3 0.9 1.2 536.7 153.3 0.6 0.2 348 127.3 0.2 0.8 32 34.7 0.5 0.3 21.3 25.9 0.9 1.4 16 14.5 0.6 1.1 14 13 64 52.4 68 54 pH Đ DO (mg/l) Std.Dev Mean khô mưa mùa khô mùa mưa 0.09 0.09 4.80 6.97 0.13 0.65 2.91 6.47 1.00 0.13 4.70 5.87 0.12 0.08 4.43 5.97 0.06 0.04 4.50 2.87 0.07 0.18 4.57 4.77 0.07 0.06 4.23 5.33 0.08 0.07 4.90 6.33 0.16 0.08 6.20 6.15 2.60 5.00 4.60 6.00 c (NTU) Tổng phospho (mg/l) khô 1.2166 0.44 1.04 0.85 0.82 0.85 0.90 0.53 0.14 TSS (mg/l) Std.Dev Mean khô mưa mùa khô mùa mưa 30 73 159.7 127.0 27 15 233.7 140.3 66 49 251.3 147.0 24 30 129.7 40.0 31 83.7 17.0 18 44.3 34.0 10 45.3 28.3 96.3 58.0 62.0 83.5 135.0 28.0 2.0 2.0 mưa 13.7 59.8 6.9 38.4 13.7 14.3 16.5 3.2 15.5 Đ kiềm (mg/l) mưa Mean 0.7024 mùa khô mùa mưa 0.21 1.67 0.52 0.64 4.00 0.48 0.75 5.33 0.57 0.67 7.67 0.57 2.34 7.00 0.83 0.59 3.00 0.16 0.25 5.67 0.11 0.07 2.67 0.09 0.50 0.00 0.00 Std.Dev khô mưa 2.89 0.01 3.00 0.01 4.73 0.04 3.51 0.05 6.25 0.37 2.65 0.04 9.82 0.01 3.79 0.04 0.71 E.Coli (CFU/100ml) Std.Dev Mean Std.Dev khô mưa mùa khô mùa mưa QCVN 08 QCVN 02 58.1 65.8 6,667 2,571 20 61.1 26.5 4,800 20 159.9 114.5 3,367 1,768 20 58.9 29.8 3,033 2,270 20 22.1 5.3 1,003 1,700 20 5.7 16.5 590 870 20 10.3 13.3 923 887 20 6.4 7.9 2,907 459 20 56.6 67.2 20 0 20 0 20 Nitrate (mg/l) Std.Dev Mean khô mưa mùa khô mùa mưa 0.087 0.032 0.1179 0.1130 0.043 0.058 0.1793 0.1267 0.063 0.010 0.2774 0.1020 0.015 0.080 0.3936 0.1097 0.016 0.031 0.3014 0.0920 0.019 0.062 0.1292 0.0670 0.005 0.018 0.0841 0.1290 0.043 0.018 0.0562 0.1550 0.0284 0.0626 0.0107 0.1272 0.0231 0.0428 0.0208 0.1071 COD (mg/l) Std.Dev Mean Std.Dev khô mưa mùa khô mùa mưa khô 48.5 3.5 66.7 82.3 30.6 16.2 1.2 120.0 109.7 34.6 16 20.8 66.7 61.3 11.5 15.3 3.1 66.7 70.4 64.3 7.2 4.2 64.0 68.6 16.0 3.5 1.2 37.3 52.6 24.4 6.4 0.6 26.7 43.0 9.2 5.3 21.3 29.3 9.2 1.4 24.0 43.9 11.3 32 44 16 14 Ammonia (mg/l) Std.Dev Mean Std.Dev khô mưa mùa khô mùa mưa khô mưa 0.0383 0.0211 0.0522 0.1553 0.0256 0.0979 0.0711 0.0180 0.0232 0.0402 0.0116 0.0120 0.0623 0.0137 0.0508 0.0584 0.0487 0.0377 0.1117 0.0247 0.1613 0.1243 0.0431 0.0763 0.1534 0.0341 0.1819 0.1165 0.0172 0.0685 0.0453 0.0070 0.0422 0.0496 0.0212 0.0041 0.0711 0.0356 0.0128 0.0478 0.0183 0.0146 0.0318 0.0676 0.0448 0.0852 0.0120 0.0025 0.0150 0.0284 0.0300 0.0535 0.0036 0.0137 0.0922 0.0616 0.0024 0.0515 Ti (ug/L) V SG21 SG20 SG19 SG18 SG17 SG16 SG15 SG9 DT V (ug/l) 75.877 94.023 98.910 64.400 40.490 11.410 11.416 50.360 3.172 157.213 134.733 111.570 21.293 10.622 14.556 17.800 16.073 2.312 31.523 33.287 16.714 38.471 9.928 4.289 5.852 7.349 1.658 101.996 35.559 75.356 14.784 4.767 6.237 6.475 0.365 0.775 6.647 8.800 8.343 6.413 4.694 3.860 2.955 7.325 1.047 Cr (ug/l) V SG21 SG20 SG19 SG18 SG17 SG16 SG15 SG9 DT 164.5 261.1 248.0 268.8 269.3 106.0 84.0 49.0 18.9 342.9 281.3 246.5 320.5 318.9 132.1 93.7 72.7 40.7 85.3 85.5 57.1 82.7 43.0 45.7 34.4 12.4 3.0 227.6 137.2 122.6 38.8 30.4 11.8 6.4 7.0 1.6 4965.6 6804.0 6467.3 4744.9 2913.4 1822.7 1356.4 3061.5 325.0 12.164 6.010 7.905 1.366 0.353 1.241 1.515 0.963 0.031 8.121 9.243 10.168 8.248 5.141 3.696 4.829 11.328 7.376 25.267 18.767 15.850 3.792 3.789 5.776 5.388 5.797 3.436 4.218 3.487 4.824 1.995 1.486 0.261 1.488 2.774 0.991 13.040 7.502 11.077 2.426 1.107 1.272 2.558 1.440 2.465 Co (ug/l) 14501.0 9633.5 9411.0 1549.7 914.1 1932.1 2378.1 2161.8 641.0 3282.0 3781.1 3641.1 3448.2 1688.3 301.1 544.5 1143.2 178.0 9678.0 2.1029 6.198 1.1974 4.1 4459.4 2.8327 4.702 1.226 2.43E+00 7243.2 2.527 3.4051 1.0016 2.2724 934.5 2.04E+00 1.3607 1.12E+00 0.207 401.7 1.70E+00 1.25E+00 0.4396 0.2018 908.8 1.4089 1.395 0.4401 0.1049 992.3 1.1247 1.362 0.1189 0.0225 303.4 1.63E+00 1.749 3.47E-01 0.185 351.6 0.2077 0.1354 0.0346 5.73E-03 Zn (ug/l) As (ug/l) Mean Std.Dev Mean Std.Dev Mean Std.Dev mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa 11.647 10.446 9.046 8.748 8.062 5.149 3.342 8.799 4.830 20.655 15.150 11.554 5.092 6.312 6.539 4.687 5.405 3.099 8.082 5.130 3.901 4.651 4.113 0.341 1.391 2.123 2.417 12.421 8.695 7.208 2.169 1.516 2.462 0.404 1.848 1.786 22.940 25.530 27.480 26.567 83.027 287.233 283.467 368.500 354.400 49.687 41.210 34.607 118.027 144.558 87.537 118.533 131.025 70.625 9.675 7.096 5.902 12.160 90.936 187.170 92.110 78.651 103.238 29.226 20.654 19.375 76.123 53.505 10.682 46.033 45.128 3.613 1.908 2.337 2.133 1.870 1.519 1.253 1.125 0.854 0.697 Ba (ug/l) 4.320 3.271 2.392 1.142 1.235 1.093 1.142 0.843 0.506 0.984 0.783 0.569 0.614 0.221 0.595 0.336 0.178 0.217 2.130 1.541 1.392 0.305 0.140 0.073 0.237 0.179 0.244 Pb (ug/l) Mean Std.Dev Mean Std.Dev Mean Std.Dev mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa 0.360 0.092 0.089 0.172 5.641 2.830 5.161 2.114 2.793 1.109 0.664 0.351 0.267 0.735 2.960 0.315 0.607 2.571 0.175 0.005 0.029 0.128 9.690 1.036 4.871 1.686 3.074 1.602 1.008 0.471 0.078 0.613 1.811 0.016 0.437 1.595 28.647 35.317 38.637 39.087 46.087 41.850 39.117 44.070 44.970 Cu (ug/l) V SG21 SG20 SG19 SG18 SG17 SG16 SG15 SG9 DT 3.352 3.341 3.020 3.219 1.082 1.186 0.800 1.334 1.019 Fe (ug/l) Ag (ug/l) V SG21 SG20 SG19 SG18 SG17 SG16 SG15 SG9 DT 18.570 14.417 11.114 2.397 2.608 3.244 4.410 6.388 0.311 Mean Std.Dev Mean Std.Dev Mean Std.Dev mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa Ni (ug/l) V SG21 SG20 SG19 SG18 SG17 SG16 SG15 SG9 DT Cr (ug/L) Mean Std.Dev Mean Std.Dev Mean Std.Dev mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa 31.450 29.290 20.719 43.820 53.027 33.673 32.883 135.290 24.400 7.297 3.508 2.731 8.949 6.797 16.489 13.684 22.597 26.799 12.902 6.038 9.649 20.341 38.030 13.076 16.783 179.525 2.630 3.010 3.256 4.032 3.357 2.931 9.530 12.700 11.577 6.662 Cd (ug/l) 7.038 5.718 4.306 3.101 3.456 4.275 4.470 3.260 2.766 1.464 1.367 1.922 0.880 1.770 5.581 5.862 2.577 3.553 4.763 2.474 2.977 3.239 2.571 1.793 2.573 0.660 0.984 Al (ug/l) Mean Std.Dev Mean Std.Dev Mean Std.Dev mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa mùa khô mùa mưa 8.881 7.254 7.854 10.606 9.513 9.889 6.207 6.972 4.561 14.703 11.787 7.996 8.167 44.005 43.190 17.693 22.882 49.305 6.479 3.091 3.418 3.599 6.727 4.655 2.742 2.349 2.162 6.830 7.762 2.693 5.149 58.598 31.060 6.033 15.345 45.403 0.792 0.651 0.701 0.820 8.971 157.367 872.753 67.453 53.085 0.586 0.182 0.437 0.054 0.419 0.308 22.574 0.256 6.792 14.124 86.657 76.006 70.289 1374.728 4.545 71.204 217.180 8.238 0.497 0.102 0.341 36.551 9.267 135.619 114.353 3.162 281.881 4901.6 5574.7 5182.7 3140.4 2573.0 1368.4 808.2 4678.7 98.6 14713.6 10654.9 11576.7 2308.6 1208.1 2991.9 3713.7 2730.1 321.8 3008.9 3164.8 2283.2 1882.1 1331.0 637.6 178.4 2330.5 139.5 9786.1 2534.3 8449.6 963.2 507.5 1111.1 1561.2 269.9 154.6 – a Al Ba Cd Cr Co Mn Mo Ni Se Ag Tl V Zn Kim As Be ại m Đố ượ p ễ C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh Cw WIR FI ABS (µg/l) (lít/ngày) (%) ( 215.565 0.2 215.565 0.2 215.565 0.2 70.980 0.2 70.980 0.2 70.980 0.2 0.094 0.2 0.094 0.2 0.094 0.2 4.374 0.2 4.374 0.2 4.374 0.2 0.839 0.2 0.839 0.2 0.839 0.2 33.180 0.2 33.180 0.2 33.180 0.2 0.924 0.2 0.924 0.2 0.924 0.2 1.700 0.2 1.700 0.2 1.700 0.2 0.116 0.2 0.116 0.2 0.116 0.2 0.255 0.2 0.255 0.2 0.255 0.2 0.325 0.2 0.325 0.2 0.325 0.2 0.918 0.2 0.918 0.2 0.918 0.2 86.530 0.2 86.530 0.2 86.530 0.2 EF ED BW AT CDI RfD HI y/ ă ) ( ă ) (kg) (ngày) (mg/kg/ngày) (mg/kg/ngày) 330 10 1096 7.789E-03 1.0E+00 7.79E-03 330 20 2190 3.898E-03 1.0E+00 3.90E-03 330 58 50 21170 1.559E-03 1.0E+00 1.56E-03 330 10 1096 2.565E-03 7.0E-03 3.7E-01 330 20 2190 1.283E-03 7.0E-03 1.8E-01 330 58 50 21170 5.134E-04 7.0E-03 7.3E-02 330 10 1096 3.396E-06 5.0E-03 6.8E-04 330 20 2190 1.700E-06 5.0E-03 3.4E-04 330 58 50 21170 6.799E-07 5.0E-03 1.4E-04 330 10 1096 1.580E-04 1.0E+00 1.6E-04 330 20 2190 7.909E-05 1.0E+00 7.9E-05 330 58 50 21170 3.164E-05 1.0E+00 3.2E-05 330 10 1096 3.030E-05 2.9E-03 1.0E-02 330 20 2190 1.517E-05 2.9E-03 5.2E-03 330 58 50 21170 6.066E-06 2.9E-03 2.1E-03 330 10 1096 1.199E-03 5.0E-03 2.4E-01 330 20 2190 6.000E-04 5.0E-03 1.2E-01 330 58 50 21170 2.400E-04 5.0E-03 4.8E-02 330 10 1096 3.338E-05 5.0E-03 6.7E-03 330 20 2190 1.671E-05 5.0E-03 3.3E-03 330 58 50 21170 6.682E-06 5.0E-03 1.3E-03 330 10 1096 6.142E-05 2.0E-02 3.07E-03 330 20 2190 3.074E-05 2.0E-02 1.54E-03 330 58 50 21170 1.230E-05 2.0E-02 6.15E-04 330 10 1096 4.191E-06 5.0E-03 8.38E-04 330 20 2190 2.098E-06 5.0E-03 4.20E-04 330 58 50 21170 8.390E-07 5.0E-03 1.68E-04 330 10 1096 9.203E-06 5.0E-03 1.84E-03 330 20 2190 4.606E-06 5.0E-03 9.21E-04 330 58 50 21170 1.842E-06 5.0E-03 3.68E-04 330 10 1096 1.173E-05 8.0E-05 1.47E-01 330 20 2190 5.869E-06 8.0E-05 7.34E-02 330 58 50 21170 2.348E-06 8.0E-05 2.93E-02 330 10 1096 3.318E-05 7.0E-03 4.7E-03 330 20 2190 1.661E-05 7.0E-03 2.4E-03 330 58 50 21170 6.643E-06 7.0E-03 9.5E-04 330 10 1096 3.126E-03 3.0E-01 1.0E-02 330 20 2190 1.565E-03 3.0E-01 5.2E-03 330 58 50 21170 6.259E-04 3.0E-01 2.1E-03 Đố ượ p ễ C (1-6) C (6-12) trưởng t nh C (1-6) C (6-12) trưởng t nh Cw (µg/l) EF ED BW AT CDI SF y/ ă ) ( ă ) (kg) (ngày) (mg/kg/ngày) (mg/kg/ngày) C (1-6) NDMA (ng/l) C (6-12) trưởng t nh 0.680 0.680 0.680 0.298 0.298 0.298 4.200 4.200 4.200 WIR FI ABS (lít/ngày) (%) ( 2 2 2 2 1 1 1 1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 330 330 330 330 330 330 330 330 330 58 58 58 10 20 50 10 20 50 10 20 50 25550 25550 25550 25550 25550 25550 25550 25550 25550 1.054E-06 1.054E-06 4.076E-06 4.617E-07 4.617E-07 1.785E-06 6.51E-09 6.51E-09 2.52E-08 1.75 1.75 1.75 4.3 4.3 4.3 0.51 0.51 0.51 Risk 1.8E-06 1.8E-06 7.1E-06 2.0E-06 2.0E-06 7.7E-06 3.3E-09 3.3E-09 1.3E-08 t Al Ba Cd Cr Co Mn Hg Mo Ni Se Ag Tl V Zn Đố ượ p ễ C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t C (1-6) C (6-12) rưở t Cw (µg/l) 5357.06 5357.06 5357.06 342.5 342.5 342.5 2459 2459 2459 14.22 14.22 14.22 2.004 2.004 2.004 150.555 150.555 150.555 Đố ượ p ễ Cw (µg/l) As C (1-6) C (6-12) Be C (1-6) C (6-12) rưở rưở t t C (1-6) NDMA (ng/l) C (6-12) rưở t 1.466 1.466 1.466 10.32 10.32 10.32 1.465 1.465 1.465 10.55 10.55 10.55 0.09063 0.09063 0.09063 8.755 8.755 8.755 458 458 458 1.907 1.907 1.907 0.2412 0.2412 0.2412 3.7 3.7 3.7 Cw WIR (mg/l) (lít/ngày) 5.35706 5.35706 5.35706 0.3425 0.3425 0.3425 2.459 2.459 2.459 0.01422 0.01422 0.01422 0.002 0.002 0.002 0.15056 0.15056 0.15056 2 2 0.00147 0.00147 0.00147 0.01032 0.01032 0.01032 0.00147 0.00147 0.00147 0.01055 0.01055 0.01055 9.1E-05 9.1E-05 9.1E-05 0.00876 0.00876 0.00876 0.458 0.458 0.458 FI WIR (lít/ngày) FI 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ABS (%) ( 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 EF ED y/ ă ) ( ă ) 330 330 330 58 330 330 330 58 330 330 330 58 330 330 330 58 330 330 330 58 330 330 330 58 330 330 330 58 330 330 330 58 330 330 330 58 330 330 330 58 330 330 330 58 330 330 330 58 330 330 330 58 330 330 330 58 BW (kg) 10 20 50 10 20 50 10 20 50 10 20 50 10 20 50 10 20 50 10 20 50 10 20 50 10 20 50 10 20 50 10 20 50 10 20 50 10 20 50 10 20 50 AT CDI RfD HI (ngày) (mg/kg/ngày) (mg/kg/ngày) 1096 1.94E-01 1.0E+00 1.94E-01 2190 9.69E-02 1.0E+00 9.69E-02 21170 3.87E-02 1.0E+00 3.87E-02 1096 1.24E-02 7.0E-03 1.77E+00 2190 6.19E-03 7.0E-03 8.85E-01 21170 2.48E-03 7.0E-03 3.54E-01 1096 8.88E-02 5.0E-03 1.78E+01 2190 4.45E-02 5.0E-03 8.89E+00 21170 1.78E-02 5.0E-03 3.56E+00 1096 5.14E-04 1.0E+00 5.14E-04 2190 2.57E-04 1.0E+00 2.57E-04 21170 1.03E-04 1.0E+00 1.03E-04 1096 7.24E-05 2.9E-03 2.50E-02 2190 3.62E-05 2.9E-03 1.25E-02 21170 1.45E-05 2.9E-03 5.00E-03 1096 5.44E-03 5.0E-03 1.09E+00 2190 2.72E-03 5.0E-03 5.44E-01 21170 1.09E-03 5.0E-03 2.18E-01 1096 0.00E+00 3.0E-04 0.00E+00 2190 0.00E+00 3.0E-04 0.00E+00 21170 0.00E+00 3.0E-04 0.00E+00 1096 5.30E-05 5.0E-03 1.06E-02 2190 2.65E-05 5.0E-03 5.30E-03 21170 1.06E-05 5.0E-03 2.12E-03 1096 3.73E-04 2.0E-02 1.86E-02 2190 1.87E-04 2.0E-02 9.33E-03 21170 7.46E-05 2.0E-02 3.73E-03 1096 5.29E-05 5.0E-03 1.06E-02 2190 2.65E-05 5.0E-03 5.30E-03 21170 1.06E-05 5.0E-03 2.12E-03 1096 3.81E-04 5.0E-03 7.62E-02 2190 1.91E-04 5.0E-03 3.82E-02 21170 7.63E-05 5.0E-03 1.53E-02 1096 3.27E-06 8.0E-05 4.09E-02 2190 1.64E-06 8.0E-05 2.05E-02 21170 6.56E-07 8.0E-05 8.19E-03 1096 3.16E-04 7.0E-03 4.52E-02 2190 1.58E-04 7.0E-03 2.26E-02 21170 6.33E-05 7.0E-03 9.05E-03 1096 1.65E-02 3.0E-01 5.52E-02 2190 8.28E-03 3.0E-01 2.76E-02 21170 3.31E-03 3.0E-01 1.10E-02 ABS (%) ( EF ED y/ ă ) ( ă ) BW (kg) AT (ngày) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 330 330 330 330 330 330 330 330 330 58 58 58 10 20 50 10 20 50 10 20 50 25550 25550 25550 25550 25550 25550 25550 25550 25550 CDI SF (mg/kg/ngày) (mg/kg/ngày) 2.96E-06 2.96E-06 1.14E-05 3.74E-07 3.74E-07 1.45E-06 5.73E-09 5.73E-09 2.22E-08 1.75 1.75 1.75 4.3 4.3 4.3 0.51 0.51 0.51 Risk 5.17E-06 5.17E-06 2.00E-05 1.61E-06 1.61E-06 6.22E-06 2.92E-09 2.92E-09 1.13E-08 Results of water quality monitoring in Vietnam Nguyen Thi Tuyet Nam, Nguyen Thi Van Ha, Nguyen Cong Thanh Abstract Saigon River is the important source for water supply in Hochiminh City (HCMC) However, its water quality is degrading gradually This study was conducted in order to assess its pollution standard polluted patterns Results from this study could be used as the scientific bases to propose mitigation measures and management strategies for the river There were nine water samples along the Saigon collected, of which one sample was at water intake of Tan Hiep Water Treatment Plant (WTP) and one from the Dau Tieng Reservoir Monitoring water quality parameters include physical, chemical and microbiological parameters such as pH, Conductivity, COD, BOD5, DO, E.Coli, Total Coliforms and metals The results show that downstream Saigon River was more polluted than upstream Introduction The Saigon River is the second largest river supplying water to HCMC It rises in Cambodia, flows south and south-southeast for about 225 km and then confluences with Nha Be River before flows to the East Sea The total length of the Saigon River is about 280 km, of which 106 km passes through HCMC It plays an important role to HCMC, as it is the main water supply and the host of Saigon Port, which is a hub for export – import of goods in South Vietnam as well as in HCMC Objective The study is aimed to understand the water quality variation along the Saigon River in the rainy and dry seasons Methodology There are sampling locations along the Saigon River from the upstream Dau Tieng Reservoir to the downstream Saigon River (Table and Figure 1) and sample will be taken at Tan Hiep Water Treatment Plant (influent before treatment) on March 31, 2010 175 Table 1: Water sampling locations in the Saigon River System No Code - VHD10 DT7 VHD9 SG9 VHD8 SG15 VHD7 SG16 (WS1) SG17 (WS2) SG18 SG19 - Longitude 106o35‘16‖ Latitude 10o54‘40‖ 106o20‘41‖ 11o19‘74‖ 106025‘13‖ 11010‘21‖ 106037‘07‖ 10059‘14‖ VHD6 Locations Tan Hiep Water Treatment Plant Main gate – Fish cage village Boundary between Tay Ninh and HCM City Hoa Phu Intakes (Tan Hiep water treatment plant) Phu Cuong Bridge 106038‘30‖ 10058‘48‖ VHD5 Binh Phuoc Bridge 106041‘23‖ 10052‘52‖ VHD4 VHD3 VHD2 Bình Trieu Bridge Saigon Bridge Thu Thiem Bridge 106042‘50‖ 106043‘36‖ 106042‘34‖ 10049‘15‖ 10047‘55‖ 10046‘16‖ 106042‘31‖ 10045‘15‖ Noted: sample coded as VHD10 was influent at Tan Hiep water treatment plant after preliminary treatment at the pumping station 10 SG20 VHD1 Thu Thiem Port Figure 1: Water sampling sites in the Saigon River 176 For each trip, duplicate sample, filed blank sample and trip blank sample will be prepared A field blank is a blank can be prepared by exposing the blank solution (DI water) to individual pieces of the collection and the processing equipment A trip blank is a sample of analyze –free water (DI water) that is prepared in the laboratory and is transported, unopened, to the field with other sample containers and is shipped to the laboratory for analysis with the collected sample Surface water samples will be collected at each location (at right and left banks and middle river) Water samples will be collected at the minimum distance from bank should be 20m and sampling water at the 50 cm depth from the river surface The physical parameters will be measured on-site The chemical parameters and total and dissolved metals will be analyzed in the laboratory Samples will be taken into the plastic bottles, adjusted to pH