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Wastewater Treatment

Furthering the Course of Water: Best Practices for Effluent Treament

| Author / Editor: Umesh Ulavi / Dominik Stephan

Up-flow anaerobic Bio-reactor (UASB)
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Up-flow anaerobic Bio-reactor (UASB) (Picture: Vogel Business Media India)

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Water is the source of all life. This article explains various technologies to recycle and reuse water / wastewater – with experiences, hints and best practices to further the course of your water treatment – essentially, making this scarce resource go the extra mile...

The importance of water in all aspects of life is not lost on anyone, least of all, on India’s rapidly developing industry. This has in turn affected the growth of the water industry. Growing urbanization and industria-lization, coupled with over-exploitation of water resources is expected to push growth in the water and wastewater management market in the years to come, but industry participants are worried that existing poor infrastructure and pricing mechanisms may hamper the path.

A growing population has also contributed to the need to create a strong and sustainable water and wastewater infrastructure for the country. It is thus obvious that supply of clean water and effective treatment of wastewater generated across India are crucial for sustainable development in the country. The water and waste water management industry encompasses multiple techniques for the treatment of water and to overcome water scarcity and conserve water resources. Some of these technologies are listed here under:

Water treatment technologies

  • Conventional system Conventional treatment consists of coagulation, flocculation, clarification, and filtration, followed by disinfection at the pre and post stage of treatment. Conventional treatment is often preceded by presedimentation tank. The benefit of using conventional systems is that it reduces the concentration of particulate matter including suspended particles, parasites, bacteria, algae, viruses, fungi; and a range of dissolved and particulate material derived from surfaces water sources.
  • Tube settler / Lamella settler system Tube settlers are used for clarification purposes. This increases the settling capacity of circular clarifiers and/or rectangular sedimentation basins by reducing the vertical distance - a floc particle must settle before agglomerating to form larger particles. Clarifiers equipped with tube settlers can operate at 2–4 times the normal rate of clarifiers without tube settlers.

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