Research Papers

Review of MBBR models for treatment of municipal and industrial wastewater

Manuja Sourabh, Tripathi Raj Deep, Siddiqui Faisal Zia
| 2016

The conventional waste water treatment technologies are based on processes like Activated sludge process, Extended aeration, Submerged aerobic fixed film reactor, Trickling filter or Rotating Biological Contactor. However, in the recent years there has been a shift towards adoption of Sequential batch reactor (SBR) and Moving bed biological reactor (MBBR). This paper reviews various MBBR models available in the Indian market for the treatment of municipal and industrial wastewater and their effect on reactor volume and media quantity.

Variation in air quality at Filling Stations, Delhi, India, International Journal of Environmental Studies

Sehgal, M, Suresh R, Sharma VP, and Gautam SK
| 2012

The air was monitored for two consecutive periods, in the dry and the rainy seasons (2009–2010) at 40 petroleum-filling stations in the Indian capital, Delhi, to assess variations in carbon monoxide, nitrogen dioxide, PM10, PM2.5, benzene, toluene and xylene content. PM10 and PM2.5 concentrations exceeded the national ambient air quality standards at all the monitoring locations with maximum values of 1105 and 625 micro gm_3, respectively, in the dry season.