The septic tank is commonly accepted as sewage treatment unit in isolated areas even if its performance is not consistent. The methods employed for disposal of such effluent are unsafe and needs careful attention to avoid risk to the public health. Constructed Wetland Treatment Systems (CWTS) have been used extensively now-a-days in some parts of the world for wastewater treatment.

Experiments were carried out in laboratory using small reed bed to treat municipal sewage.

Laboratory studies were conducted to assess the influence of media related factors such as particle size, porosity, pore size and specific surface area on performance of upflow anaerobic biofilters (AnBFs). Three simple models of 8 litres capacity upflow anaerobic biofilters packed with support media granite of size 40 mm, 20 mm and 10 mm respectively were installed.

Ultraviolet light kills bacteria in wastewater without the use of chemicals. This reliable and environment friendly method was used in the project Clean Isar in Germany.

The aim of this work was to evaluate the performance of UASB reactor for treating municipal wastewater.

One of the most pervasive problems afflicting people throughout the world is inadequate access to clean water and sanitation.

Membranes are key components in the majority of plants treating waste water for recycle. These days there are not only relatively small scale plants recycling waste water in factories but also large scale plants treating waste water from cities for recycle. Oct-Dec 2007