The disinfection of potable water and wastewater guarantees a degree of protection from contact with pathogenic organisms as i.e. those causing cholera, typhoid, hepatitis, polio and a number of many bacterial, viral and parasitic diseases.  Disinfection is a process where a significant percentage of pathogenic organisms are killed or controlled.  The most common indicator organism used in the evaluation of drinking water is Total Coliform (TC), unless there is a reason to focus on a specific pathogen.  The most common indicator organism for wastewater evaluation is fecal coliform or Escherichia coli (E. coli) or Total Coliform.  As domestic wastewater contains approximately 1,000 times more indicator organisms than typical surface water, is a waste water requiring a disinfection.

Disinfection is usually considered the final stage in the water treatment process in order to limit the effects of organic material, suspended solids and other contaminants before to be used.  Like the disinfection of wastewater, the primary methods used for the disinfection of water in very small (25-500 people) and small (501-3,300 people) treatment systems are ozone, ultraviolet irradiation (UV) and chlorine.  There are numerous alternative disinfection processes which can be used in small water treatment systems, including chlorine dioxide, potassium permanganate, chloramines etc.


These plants treat (in successfully way if well designed) the waste originating from domestic, industrial, agricultural, and medical or transport activities. Used water becomes wastewater upon the change of its quality, composition and/or temperature.

Wastewater can be divided into two major groups:

Sewage water include all wastewater used in houses (e.g. originating from toilets, showers or sinks).
Industrial wastewater originates from production, industrial and commercial activities, and has a different chemical composition as the industry’s activity.

Municipal wastewater originating from municipalities. It has different ratio of sewage water, industrial wastewater and unabsorbed rain water flowing through the public sewers.

Our plants can be of different typology as the water type, client’s available space, etc, so include Extended Aeration, MBR, SBR, Rotating Disks and others. Our plants can be also modular type for an easy installation and can have big capacity.



BNC Engineering

"The water is condescending, mobile, transparent, tasteless. One easily has the impression that, in comparison with the rest of reality, it is in some way otherworldly."