BIONICS ENVIRO TECH

Each person uses an average of 120 litres of water per day.   This is used for a wide variety of purposes (body cleansing, cooking, flushing toilets, etc.). But what actually happens to the dirty water / waste water when it leaves our area of application? Waste water is drained through pipe systems and thus enters the public sewerage system. Here we differentiate between two types of drainage. In the  combined sewer system , domestic and commercial wastewater is fed into a sewer together with rainwater that accumulates on sealed surfaces (e.g. streets and roofs). The separate sewer system divides the media. Dirty water is fed into one sewer, surface water into another. Because of the low dirt load, the collected surface water is usually discharged into neighbouring waters (lakes or rivers). The wastewater and the combined sewer both end up at the treatment plant. Of course, in the case of combined sewer systems, the sewage treatment plant has more work to do, as all the surfac...

No new water is ever created on earth. Humans are just   reusing the same water   that has been on the planet for millions of years. Since fresh water is a finite and limited resource, steps must be taken to insure that any water used by homes or industry is cleaned up, or treated before it is returned to the environment. Most sewage and wastewater goes through a three stage treatment process: primary treatment, secondary treatment, and tertiary treatment. This guide is intended to serve as an introduction to the different stages of wastewater treatment. Primary treatment After a pre-treatment phase where larger pieces of debris such as trash and tree branches are removed, wastewater goes through the primary treatment stage. In this stage, water flows through settling tanks where lower density substances such as oils, grease and some solid wastes are allowed to rise to the surface. Devices such as skimmers go across the surface of the water to remove the oils and solids that h...