Tham khảo tài liệu 'water conservation part 9', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Water Management in the Petroleum Refining Industry 111 Parameter Oily discharge D1 Oily discharge D2 Efluent from API discharge 1 Efluent from API discharge 2 Efluent from the final CPS Flow L s 116 55 108 72 113 46 107 69 220 109 Temperature C 44 7 32 2 41 4 32 1 38 3 O G mg L 624 728 474 464 55 54 40 21 48 40 COD mg L 586 212 591 214 311 73 318 56 314 61 CODsoluble mg L 217 63 159 48 192 52 141 45 167 46 BOD5 mg L 144 54 146 84 108 26 102 60 105 52 TSS mg L 185 65 195 64 24 2 42 24 33 6 TDS mg L 1 583 250 828 167 1 076 155 733 109 883 165 Sulphates mg L 111 8 253 52 98 14 214 88 164 77 Chlorides mg L 782 39 241 86 545 83 222 89 388 85 Sulphides mg L 50 37 18 9 40 33 14 5 27 18 Fluorides mg L Phenols mg L NH4-N mg L 28 22 35 32 25 21 33 36 29 23 TKN mg L 49 25 67 29 36 24 58 38 46 31 Ptotal mg L Alkalinity mg L 123 21 102 30 105 38 100 25 104 40 Hardness mg CaCOa L 389 126 224 35 249 38 207 45 225 34 pH Conductivity iS cm 2 570 419 1 340 436 1 840 151 1 170 240 1 790 110 Table 3. Characteristics of the oily effluents in refinery R2 112 Water Conservation attributed basically to desorption. The evaluation indicated that the API separators were correctly designed there was 40 additional capacity for safety reasons. However the oil recollection and recovery as well as the sludge extraction were deficient and reengineering project of the pretreatment facilities was developed based on the wastewater characterizations and on the results of the performed treatability tests. The existing CPS did not provide any O G COD and TSS removal. The plate modules after a complete cleaning got saturated with oily sludge in few months. The constant cleaning and sludge extraction was too complicated operationally. The obtained characterizations and the pretreatment performance evaluation
