9. COMPARISON OF MEDIA CHARACTERISTIC NAME SIZE SURFACE AREA VOID RATIO WEIGHT Fujino Spirals 50 mm 350 Sq.m/Cu.m 92 % 110 gm/L Enzotech Bioball 28 mm 550 Sq.m/Cu.m 95 % 27 gm/L
14. Comparison of MBR and Enzotech FRP Defining Parameters MBR Enzotech - FRP Type Raw sewage parameters TSS,mg/l 200 to 250 300 to 350 BOD,mg/l 300 to 400 400 to 500 COD/mg/l 500 to 600 800 to 1000 Treated water parameters TSS,mg/l Nil 5 to 10 BOD,mg/l <3 < 10 to<3 COD/mg/l <50 50 to 100
15. Comparison of MBR and Enzotech FRP Defining Parameters MBR Enzotech - FRP Type Sludge handling system requirement Sludge production is more. It needs Belt press or centrifugal sludge removal equipment. Sludge removed by gravity on sludge bed Advantages Membrane process with extra pure outlet water quality for special use, smaller area requirement. Classical treatment improved for higher efficiency to give better treated water for reuse, less space and less power requirement. Disadvantage Continuous maintenance of high MLSS, high membrane replacement cost, huge power requirement, highly trained operator required. Chemical cost, mechanical maintenance are high
16. Comparison of MBR and Enzotech FRP Both have 6 hours total retention time Defining Parameters MBR Enzotech - FRP Type Installation Electromechanical 6 to 8 weeks Easy installation 1 to 2 weeks Below 150 KLD MSEP / RCC FRP Above 150 KLD RCC RCC Equalization Min. 8 Hrs Retention Time Min. 12Hrs Retention Time Biological Tank Min. 6 Hrs Retention Time, since high MLSS is maintained Min. 1 to1.5 Hrs Retention Time Secondary Settlers NA Min 2 Hrs Retention time Filter Feed Tank NA Min 15 minutes Retention time Treated water Tank As per required 12 hrs Aerobic Digester NA NA Sand Filter, m3/m2/hr NA 15 to 20 Activated Carbon filter,m3/m2/hr NA 12 to 15 Softener Input Hardness/ OBR NA MLSS 8000 mg/l to 12000 mg/l Not required
17. Comparison of MBR and Enzotech FRP Defining Parameters MBR Enzotech - FRP Type Operation Fully automated for critical operations Easy system operates on its own with periodical checks Manpower Skilled, not on continuous basis Semi skilled, and not on continuous basis Energy Efficiency Selection of energy efficient equipment required Energy efficient Typical cost in Rs.100 per KLD sewage treatment Depends upon membrane selection 22.5 lakhs Operating cost per KLD sewage treatment (power, chemicals etc. Rs.22 to24 Rs.10 to15 land requirement per 100 KLD sewage treatment 50 to 65 m2 50 to 65 m2
18. Comparison of MBR and Enzotech FRP Defining Parameters MBR Enzotech - FRP Type Recommended Application Municipal corp., SEZ, Hotels, IT parks ,Residential projects, ETP etc Township, Residential projects, SEZ, Hotels, Hospital ,IT parks, ETP etc Design life of media/Membrane 3 to 7 years 15 to 20 years Automation PLC based operation Not required Minimum and Maximum capacities up to 6 MLD STP 10000 liter per day to all size Availability of spare components for maintenance Not readily, involves membranes and automation Easy
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