Sewage/Wastewater Treatment

We at Palava believe in recycling and reusing valuable natural resources like water. To ensure water sustainability in our townships, we have partnered with GE Power & Water, Water & Process Technologies, the Global Leader in water and wastewater treatment technologies.

By using GE's state-of-the-art ZeeWeed Membrane Bioreactor (MBR) technology, for sewage/wastewater treatment and reuse, the Developers shall provide Palava township residents the ability to recover and reuse a significant quantity of water for applications such as gardening, flushing, floor and car washing, water landscapes and HVAC. GE's MBR technology not only ensures regulatory compliance but also provides other benefits such as safe, automated, odor-free operations, the best quality of treated water, space savings and lowest lifecycle costs.

Combined with rain water harvesting, wastewater reuse would reduce dependency on external sources and make the townships self-sustainable for water needs. GE's MBR technology shall be used initially for two Sewage Treatment Plants (STPs): Casa Bella Gold (3 MLD or 3 Million Liters per Day) and Casa Rio (6.1 MLD). These plants are designed with modular capability such that the capacity can be increased in discrete units after commissioning in 2012-13.

Excerpts from interview with Hoshang Subawalla, Business Leader, for GE's Water & Process Technologies, India on the same:

1. Why is sewage treatment necessary and what are the benefits of reusing sewage?
   Sewage or wastewater treatment is the use of appropriate treatment technologies and methods to treat municipal or industrial wastewater for safe discharge and/or reuse. Untreated sewage poses a grave risk to public health and is the leading cause of water-borne diseases and pollution of surface and ground water. Sewage treatment and reuse could reduce fresh (groundwater or surface water) consumption by up to 60%-70% while producing water for discharge that is cleaner and environmentally compatible. Urban India faces severe water crisis today and it is imperative we use water conservation measures such as reuse and rain-water harvesting to minimize consumption and waste.
2. What is the quality of water than can be achieved using MBR and what are the possible end uses?
   ZeeWeed MBRs are equipped with reinforced hollow-fiber ultrafiltration membranes that typically provide reuse quality water with turbidity <1 NTU, Total Suspended Solids (TSS) <2 ppm, Biological Oxygen Demand (BOD) < 5 ppm1, Total Nitrogen (TN) <5 ppm. This high quality water can be directly reused for non-potable uses and with suitable post-treatment can also be employed for Indirect Potable Reuse (IPR). Cities around the world including Singapore, Sydney, Brisbane, San Diego and Phoenix increasingly use reused / recycled water for both non-potable and indirect potable reuse.
3. What makes GE's Water & Process Technologies one of the most trusted brands in sewage treatment today?
   GE aligns the best people globally with the most advanced technology, products and services to solve the toughest water, wastewater or process challenges of our Customers. With more than 650 installations globally in wastewater treatment and reuse, ranging from compact packaged systems to 100+ MLD large municipal installations, GE has demonstrated leadership in reuse technologies.