Aerobic treatment is an alternative to the slower anaerobic treatment processes for concentrated ... more Aerobic treatment is an alternative to the slower anaerobic treatment processes for concentrated wastewaters such as one from food processing industries. This paper reviews the performance of various aerobic treatment methods for the treatment of food processing wastewaters. It was noted that the total chemical oxygen demand (TCOD) removal efficiencies and process capacities were affected by the variations in organic loading rates (OLR). The review shows that most suspended growth bioreactors are effective at low organic loading rates for treating food processing wastewaters. All biofilm reactors have a similar level of COD removal, but the highest COD removal efficiency at a high organic loading rate was observed in flexible fibre biofilm reactor (FFBR). Attached growth processes exhibited better performance for treating high strength food processing wastewater effectively, compared with conventional suspended methods. The high specific surface area and low sludge production of flexible fibre biofilm reactors are other advantages, compared with other attached growth biofilm systems. A flexible fibre biofilm reactor is a sound alternative from a process and economic perspective.
The present investigation deals with the assessment of the physico-chemical parameters andcorrela... more The present investigation deals with the assessment of the physico-chemical parameters andcorrelation coefficient of the Lake HussainSagar, Hyderabad, Telangana. Seasonal variations of 11 physico-chemical parameters were observed at five different sampling stations. The physico-chemical characteristics and correlation coefficient were studied and analyzed during February 2010- October 2012.Correlation coefficient indicates showed high significant positive and negative relationship (p <0.01 level) and also show significant positive and negative relationship (p < 0.05 level). 11 physico-chemical parameters were taken in consideration for the analysis of the lake water quality such as pH, Temperature, Total dissolved solids (TDS), Total suspended solids (TSS), dissolved oxygen(DO), Nitrates (as N), Ammonical Nitrogen (as N), Total Nitrogen, Total Phosphorus, Chemical oxygen demand(COD), Carbonaceous Biological oxygen demand(cBOD or BOD5).
Sewage sludge is usually considered as treatment residue that needs expensive treatment forremova... more Sewage sludge is usually considered as treatment residue that needs expensive treatment forremoval. Sludge volumes will continue to grow worldwide with increasing population and country wealth. The Main objective of sludge treatment is to reduce its volume and moisture content. The cost of handling and treating sludge generated from a wastewatertreatment facility can range from 20 to 50 % of total operation and maintenance costs. In a sustainable society, sludge should rather be seen as asource of energy, phosphorus and other products. Wastewater treatment facilities are exploring technologies to utilize these values worldwide. Technologies on extracting minerals fromsludge would either help offset treatment facility’s costs or even turn a profit. First step inturning sludge from a costly waste material into a profitable revenue stream should be amaterial balance.
The Wastewater treatment plant considered in this Study is located across picket nala, one of the influent stream and a pollution point source to HussainSagar Lake. The Plant is of 30MLDcapacity and is designed with Biological Nitrogen Removal (BNR) by A2/O Process with an integrated phosphorous removal mechanism.Phosphorus balance in various treatment steps was studied and potential technologies forExtracting phosphorus was reviewed.
A Cost-effective and Efficient method for Municipal Wastewater Treatment using an Upflow Anaerobi... more A Cost-effective and Efficient method for Municipal Wastewater Treatment using an Upflow Anaerobic Sludge Blanket (UASB) reactor followed by Flash Aeration (FA) as the post-treatment, without implementing aerobic biological processes is examined in this paper. The UASB reactor was operated without recycle, at Hydraulic Retention Time (HRT) of 8 h and achieved consistent removal of BOD, COD and TSS of 60–70% for more than 12 months. The effect of Flash Aeration (FA) on UASB effluent post-treatment was studied at different HRT (15, 30 and 60 min) and dissolved oxygen (DO) concentrations (low DO = 1–2 mg/L and high DO = 5–6 mg/L). The optimum conditions for BOD, COD and sulfide removal were 30–60 min HRT and high DO concentration inside the FA tank. The Final Effluent after clarification was characterized by BOD and COD values of 28–35 and 50–58 mg/L, respectively. Sulfides were removed by more than 80%, but the fecal coliform only by ~2 log. The UASB followed by FA is a simple and efficient process for municipal wastewater treatment, except for fecal coliform, enabling water and nutrients recycling to agriculture.
Aerobic treatment is an alternative to the slower anaerobic treatment processes for concentrated ... more Aerobic treatment is an alternative to the slower anaerobic treatment processes for concentrated wastewaters such as one from food processing industries. This paper reviews the performance of various aerobic treatment methods for the treatment of food processing wastewaters. It was noted that the total chemical oxygen demand (TCOD) removal efficiencies and process capacities were affected by the variations in organic loading rates (OLR). The review shows that most suspended growth bioreactors are effective at low organic loading rates for treating food processing wastewaters. All biofilm reactors have a similar level of COD removal, but the highest COD removal efficiency at a high organic loading rate was observed in flexible fibre biofilm reactor (FFBR). Attached growth processes exhibited better performance for treating high strength food processing wastewater effectively, compared with conventional suspended methods. The high specific surface area and low sludge production of flexible fibre biofilm reactors are other advantages, compared with other attached growth biofilm systems. A flexible fibre biofilm reactor is a sound alternative from a process and economic perspective.
The present investigation deals with the assessment of the physico-chemical parameters andcorrela... more The present investigation deals with the assessment of the physico-chemical parameters andcorrelation coefficient of the Lake HussainSagar, Hyderabad, Telangana. Seasonal variations of 11 physico-chemical parameters were observed at five different sampling stations. The physico-chemical characteristics and correlation coefficient were studied and analyzed during February 2010- October 2012.Correlation coefficient indicates showed high significant positive and negative relationship (p <0.01 level) and also show significant positive and negative relationship (p < 0.05 level). 11 physico-chemical parameters were taken in consideration for the analysis of the lake water quality such as pH, Temperature, Total dissolved solids (TDS), Total suspended solids (TSS), dissolved oxygen(DO), Nitrates (as N), Ammonical Nitrogen (as N), Total Nitrogen, Total Phosphorus, Chemical oxygen demand(COD), Carbonaceous Biological oxygen demand(cBOD or BOD5).
Sewage sludge is usually considered as treatment residue that needs expensive treatment forremova... more Sewage sludge is usually considered as treatment residue that needs expensive treatment forremoval. Sludge volumes will continue to grow worldwide with increasing population and country wealth. The Main objective of sludge treatment is to reduce its volume and moisture content. The cost of handling and treating sludge generated from a wastewatertreatment facility can range from 20 to 50 % of total operation and maintenance costs. In a sustainable society, sludge should rather be seen as asource of energy, phosphorus and other products. Wastewater treatment facilities are exploring technologies to utilize these values worldwide. Technologies on extracting minerals fromsludge would either help offset treatment facility’s costs or even turn a profit. First step inturning sludge from a costly waste material into a profitable revenue stream should be amaterial balance.
The Wastewater treatment plant considered in this Study is located across picket nala, one of the influent stream and a pollution point source to HussainSagar Lake. The Plant is of 30MLDcapacity and is designed with Biological Nitrogen Removal (BNR) by A2/O Process with an integrated phosphorous removal mechanism.Phosphorus balance in various treatment steps was studied and potential technologies forExtracting phosphorus was reviewed.
A Cost-effective and Efficient method for Municipal Wastewater Treatment using an Upflow Anaerobi... more A Cost-effective and Efficient method for Municipal Wastewater Treatment using an Upflow Anaerobic Sludge Blanket (UASB) reactor followed by Flash Aeration (FA) as the post-treatment, without implementing aerobic biological processes is examined in this paper. The UASB reactor was operated without recycle, at Hydraulic Retention Time (HRT) of 8 h and achieved consistent removal of BOD, COD and TSS of 60–70% for more than 12 months. The effect of Flash Aeration (FA) on UASB effluent post-treatment was studied at different HRT (15, 30 and 60 min) and dissolved oxygen (DO) concentrations (low DO = 1–2 mg/L and high DO = 5–6 mg/L). The optimum conditions for BOD, COD and sulfide removal were 30–60 min HRT and high DO concentration inside the FA tank. The Final Effluent after clarification was characterized by BOD and COD values of 28–35 and 50–58 mg/L, respectively. Sulfides were removed by more than 80%, but the fecal coliform only by ~2 log. The UASB followed by FA is a simple and efficient process for municipal wastewater treatment, except for fecal coliform, enabling water and nutrients recycling to agriculture.
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Papers by Shiva Kumar
positive and negative relationship (p < 0.05 level). 11 physico-chemical parameters were taken in consideration for the analysis of the lake water quality such as pH, Temperature, Total dissolved solids (TDS), Total suspended solids (TSS), dissolved oxygen(DO), Nitrates (as N), Ammonical Nitrogen (as N), Total Nitrogen, Total Phosphorus, Chemical oxygen demand(COD), Carbonaceous Biological oxygen demand(cBOD or BOD5).
The Wastewater treatment plant considered in this Study is located across picket nala, one of the influent stream and a pollution point source to HussainSagar Lake. The Plant is of 30MLDcapacity and is designed with Biological Nitrogen Removal (BNR) by A2/O Process with an integrated phosphorous removal mechanism.Phosphorus balance in various treatment steps was studied and potential technologies forExtracting phosphorus was reviewed.
positive and negative relationship (p < 0.05 level). 11 physico-chemical parameters were taken in consideration for the analysis of the lake water quality such as pH, Temperature, Total dissolved solids (TDS), Total suspended solids (TSS), dissolved oxygen(DO), Nitrates (as N), Ammonical Nitrogen (as N), Total Nitrogen, Total Phosphorus, Chemical oxygen demand(COD), Carbonaceous Biological oxygen demand(cBOD or BOD5).
The Wastewater treatment plant considered in this Study is located across picket nala, one of the influent stream and a pollution point source to HussainSagar Lake. The Plant is of 30MLDcapacity and is designed with Biological Nitrogen Removal (BNR) by A2/O Process with an integrated phosphorous removal mechanism.Phosphorus balance in various treatment steps was studied and potential technologies forExtracting phosphorus was reviewed.