A pilot study for wastewater treatment using horizontal flow wetland in Basrah city

الملخص EN

Constructed wetland is engineering systems used for wastewater treatment, whose objective is to reuse water, under the condition controlled, the mechanisms of treatment that occur in natural environments, through the development and get better the process that includes the porous media, plants, and gathering microbial.

In this paper explains horizontal flow in constructed wetland treatment.

the horizontal flow is moving through the gravel media bed and vegetation which permits the wastewater flow through roots and has contact with the biofilm created generated in the subsurface wetland.

To estimate the quality of treated water, some physical, chemical and biological parameters were measured.

Treated wastewater from fieldwork showed removal efficiency was increased with time and showed the average removal after detention time of 3, 4, and 6 days, respectively, (47.7 %, 53.2 %, 77.5%) removal of chemical oxygen demand (COD), (45.1%, 52.8%, 64.4%) removal of total nitrogen (TN), (55.4%, 58.8%, 72.2%) removal of NH4, (57%, 55%, 75%) removal of total suspended solids (TSS), also average removal of Nitrate was (19.41%) after 3 days.

The results showed that the system was effective in removing target pollutants.

The treatment water can be use for irrigation.

Index Terms- Wetland treatment, Experimental work, horizontal subsurface flow