Abstract

Sewage sludge is a good source of energetically desirable compounds and green algae in developing country like India. In this work, the combustion characteristics of sewage sludge and green algae are described. The calorific value (CV) of dried sewage sludge (n = 7) and green algae (n = 11) was ranged from 1800 to 6250 and 3700 to 6280 kcal/kg with mean value of 3999 ± 1347 and 4428 ± 547 kcal/kg, respectively. The effect of proximate variables and water quality parameters in the CV of sludge and algae are discussed.

Highlights

  • Sewage sludge includes black and grey water and semi-solid precipitates released at the household levels

  • The caloric value of the sewage and algae was reported by many researchers [2]-[11]

  • Algae are among the fastest-growing plants in the world and have much faster growth-rates than terrestrial crops

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Summary

Introduction

Sewage sludge includes black and grey water and semi-solid precipitates released at the household levels. Total sewage generated from urban centres in India is ≈4.0 × 1010 L/day. The sewage sludge is a source of nutrients and pathogenic microbes. The sewage sludge is covered by the algal bloom in urban sectors of India. Algal bloom causes tastes and odors in the water. Some algae produce an aromatic odor resembling to that of particular flowers or vegetables. Sewage is a source of biomass energy that is very similar to the animal wastes. The caloric value of the sewage and algae was reported by many researchers [2]-[11]. The caloric value of sludge and algal bloom of sewage reservoirs of Raipur city, CG, India is described for their further uses in energy generation.

Study Area
Sample Collection
Analysis
Results and Discussion
Water Quality
Combustion Characteristics of Sewage Sludge
Combustion Characteristics of Algae
Conclusion
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