Survey of Abbandan's bioremediation effect on input nitrogen and phosphorus (case study)

Abbandans are constructed wetland which are made up of excavation an area and creating borders of soil around it. They have significant contributions on Mazandaran province farmland irrigation but like other types of constructed wetland, are they able to bioremediat input contaminants? For a period of 9 months and on a monthly basis from Dec 2012 to Aug 2013, 54 samples were collected from inlet and outlet water of three abbandans named Nobbor and Lalle-marz utilized for fish culture and Sar-abbandan, located in north of Sari city. The temperature and pH were measured in-situ and concentration of nitrate, nitride, ammonia and total phosphorus, were measured by Atomic Absorption Apparatus in the laboratory and total nitrogen was calculated from the sum of the nitrogen data. Significant difference was observed on input-output concentration (0.083-0.016 ppm) of total phosphorus of Sar-abbandan (P = 0.016) and fish farming had no bioremediating or polluting effect on outlet parameters (α = 0.05).