Am I Surface Water Scientist ? Specific to Hydrology, water shed, pollution but not limnology Specific to Hydrology, water shed, pollution but not limnology Skill towards Environmental Innovations & contribution to this emerging science Skill towards Environmental Innovations & contribution to this emerging science Water quality to aquatic life, agricultural use and recreation & aesthetic purpose Water quality to aquatic life, agricultural use and recreation & aesthetic purpose

Aerobic Submerged Attached Growth Bioreactor: A Suitable Device for Intermediary Wastewater Treatment

Specific Objectives: To assess the organic matter degradation efficiency under different solids and salinity proportions in wastewater. To assess the organic matter degradation efficiency under different solids and salinity proportions in wastewater. To evaluate ammonia nitrogen removal capability under submerged condition of bioreactor. To evaluate ammonia nitrogen removal capability under submerged condition of bioreactor. To find out relation between bacterial intensity and the degree of waste removal. To find out relation between bacterial intensity and the degree of waste removal.

Experimental setup for the different particle size experiments

Experimental setup for the material comparison experiments

: Initial conditions of MCE (stone, glass & tire) experiment Experiment-1Experiment-2Experiment-3 COD (mg/L) BOD (mg/L) NH 3 -N (mg/L) Packed bed depth (cm)7590 Bacterial Density (cfu/ml)2.3 * * * 10 4 Total solids (mg/L) Total suspended solids (mg/L) Electrical Conductivity (  S/m) Hydraulic loading (m 3 m -2 d -1 )2.04.0

Measuring parameters and instruments Measured parametersMeasuring instruments Dissolved oxygenDO meter of model OM-51 Chemical oxygen demand COD vial and Lambda 20 Spectrometer Ammonia-nitrogenNH 3 -N electrode ( C) with multi-meter model D-53 Total dissolved solidOven Total Suspended solidVacuum extractor and Oven Electrical conductivityConductivity meter of model ES-51 pHpH p H electrode ( C) with multi-meter Biomass weightElectronic balance Bio-film thicknessDigital caliper Air flow supply Aerator Wastewater flow supplySmall submergible pump

Sample of prepared agar for culturing bacteria

CFU sample collection

Bio-oxidation of organic matters in recirculation process

Nitrification trends in recirculation process

Bacterial performance in recirculation process

Overall performance in Third Cycle experiments COD%BOD%NH3-N%HC%TS%CFU 10 4 EC Initial value Mixed tire Large tire Medium tire Small tire Crumb tire Mean STDEV Stone Glass Tire Mean STDEV

Conclusion Aerobic submerged bioreactor has been proved to be a potential device for secondary treatment of wastewater. Aerobic submerged bioreactor has been proved to be a potential device for secondary treatment of wastewater. The rate of remediation of wastewater depends on the intensity of bacterial growth. The rate of remediation of wastewater depends on the intensity of bacterial growth. High salinity retards the remediation process i.e. the bacterial growth. High salinity retards the remediation process i.e. the bacterial growth.

Conclusion The experimental results indicate that spherical shaped. i.e. the small size tire chips are better for bio- remediation for landfill leachate treatment than rectangular shape. The experimental results indicate that spherical shaped. i.e. the small size tire chips are better for bio- remediation for landfill leachate treatment than rectangular shape. In submergence bioreactor clogging rate is slower than trickling filter and clogging can be eliminated through backwashing. In submergence bioreactor clogging rate is slower than trickling filter and clogging can be eliminated through backwashing.