The Times of India 06.08.2012
Sewage treatment plants to be upgraded for cleaner sewage
NOIDA: The Noida Authority has decided to upgrade the two sewage treatment plants in the city to improve the quality of treated sewage and reduce the amount of pollutants discharged. The plants, which now use the UASB (up flow anaerobic sludge blanket)
technology, will shift to the new sequential batch reactor (SBR)
technology, approved by IIT Roorkee. The board of the Noida Authority
has also given the go-ahead in a recent meeting.
The upgradation of the plants — one of 34MLD capacity at Sector 50 and the other of 27MLD at Sector 54 — will cost around Rs 100 crore and the budget allocation for the project has already been approved by Authority CEO Sanjiv Saran.
Noida generates 100MLD of sewage from domestic waste water every day, besides about 18MLD of industrial waste. The plants can now treat around 75MLD. According to Authority officials, the upgradation will not only guarantee a clean environment and ensure better quality of treated water but also stop the use of groundwater for irrigation as the treated waste water will be diverted for such purposes. The plants will also be able to treat more waste.
Earlier last year, the SBR technology was introduced at the Sector 54 plant on a trial basis. It was found that the technology had led to a significant difference in water quality. The biological oxygen demand (BOD), one of the most common measures of pollutant organic material in water levels, had also almost halved.
"Tests done by the pollution control board revealed that levels of organic pollutants in water had gone down drastically with the introduction of the new technology. Thus, we have decided to upgrade both the plants to the SBR technology," Saran said. "The SBR plant requires one-ninth of the space required by the UASB system and its latest technology allows removal of phosphorous and nitrogen, besides the odour," he added.
The upgradation of the plants — one of 34MLD capacity at Sector 50 and the other of 27MLD at Sector 54 — will cost around Rs 100 crore and the budget allocation for the project has already been approved by Authority CEO Sanjiv Saran.
Noida generates 100MLD of sewage from domestic waste water every day, besides about 18MLD of industrial waste. The plants can now treat around 75MLD. According to Authority officials, the upgradation will not only guarantee a clean environment and ensure better quality of treated water but also stop the use of groundwater for irrigation as the treated waste water will be diverted for such purposes. The plants will also be able to treat more waste.
Earlier last year, the SBR technology was introduced at the Sector 54 plant on a trial basis. It was found that the technology had led to a significant difference in water quality. The biological oxygen demand (BOD), one of the most common measures of pollutant organic material in water levels, had also almost halved.
"Tests done by the pollution control board revealed that levels of organic pollutants in water had gone down drastically with the introduction of the new technology. Thus, we have decided to upgrade both the plants to the SBR technology," Saran said. "The SBR plant requires one-ninth of the space required by the UASB system and its latest technology allows removal of phosphorous and nitrogen, besides the odour," he added.
