Naslov
Natural Wastewater Treatment: Land Treatment Systems

Autori
Obradović, Dino

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), stručni

Izvornik
Conference Proceedings, Uniting Europe for Clean Water / Feierabend, Maryna ; Novytska, Olha ; Bakos, Vince - Budimpešta, 2017, 476-482

Skup
9th Eastern European Young Water Professionals Conference, Uniting Europe for Clean Water

Mjesto i datum
Budimpešta, Mađarska, 24.05.2017. - 27.05.2017

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
land treatment ; overland flow ; rapid infiltration ; slow rate ; soil aquifer treatment ; wastewater

Sažetak
Natural wastewater treatment methods attempt to mimic the natural degradation of pollutants by using systems that rely primarily on the biological processes of plants and bacteria. One of the most cost effective way of wastewater treatment is land treatment. Land treatment is defined as the controlled application of wastewater to the soil at a controlled rate in a designed and engineered setting where physical, chemical, and biological processes treat the wastewater as it passes across or through the soil. Soil aquifer treatment (SAT) also known as rapid infiltration (RI), slow rate (SR) and overland flow (OF) are three land application methods currently used. The objective of land treatment of wastewater is to utilise the physical, chemical, and biological properties of the soil-plant system to assimilate the waste components. All three methods require minimal effort for operation and maintenance. In rapid infiltration (RI) systems, wastewater is applied to shallow basins constructed in deep and permeable deposits of highly porous soils. Wastewater application can be by flooding, or occasionally by sprinklers. Slow rate application (SR), usually in the form of spray irrigation, is the most widely used form of land application at the present time. In the SR process, wastewater infiltrates and percolates from the vegetated soil surface and flows through the plant root zone and soil matrix. Irrigation methods are: flood irrigation, furrow irrigation, sprinkler irrigation, sub irrigation and localized irrigation. In overland flow (OF) effluent is spread evenly along the top of a vegetated slope. The overland flow process differs from other land treatment processes in that treatment of the effluent occurs on or above the land surface, rather than in the subsurface. Heavy clay soils are well suited to the overland flow process.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

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