Document Type : Original research


Department of Food Technology, College of Abouraihan, University of Tehran, Pakdasht, Iran


Rivers can be contaminated with different pollutants such as trout farms. Evaluation of the effect of trout farm on water quality is important to give new permission for trout farm construction. In current work, the effect of constructed trout farms near the Deinachal River on some physicochemical properties namely chemical oxygen demand (COD), biological oxygen demand (BOD5), dissolved oxygen (DO), pH, temperature, turbidity, nitrate, nitrite, phosphate, heavy metals, total hardness, total alkalinity, calcium, magnesium, electrical conductivity, fecal coliform and ammonium were studied and the water quality was classified using Iran Water Quality Index (IRQWI). Results showed that except nitrite, ammonium, chromium, nickel, lead, cadmium and mercury, other parameters affected by both trout farms and domestic wastewater. However, assimilative capacity of Deinachal River due to entrance the branches into the river can improve the water quality.


APHA, (1989) Standards methods for the examination of water and wastewater. 17th Edn., Washington, D.C.: APHA, AWWA, WPFC.
Ardakani, S. S., Mehrabi, Z., & Ehteshami, M. (2014). Effect of aquaculture farms wastewater on physicochemical parameters of Kabkian River, 2011-12. Journal of Mazandaran University of Medical Sciences24(113), 140-149.
Bagherian Kalat A, Lashkaripour G, Ghafoori M, Hafezi Moghaddas N, Gazanchian G, Ghafoorian R (2014) Considering the time and local changes of water quality Artkand River caused by trout farm. Journal of Watershed Engineering and Management, 5(4):243-253.
Bergheim A, Selmer-Olsen AR (1978) River pollution from a large trout farm in Norway. Aquaculture 14:267-270.
IRWQI, (2017). Instruction for calculation of Iran Water Quality Index, Department of environment of Iran, Islamic Republic of Iran. Accessed 11 March 2017.
Kırkagaç MU, Pulatsu S, Topcu A (2009) Trout farm effluent effects on water sediment quality and benthos. Clean 37 (4–5):386 – 391.
Zivic, I., Markovic, Z., Filipovic‐Rojka, Z., & Zivic, M. (2009). Influence of a trout farm on water quality and macrozoobenthos communities of the receiving stream (Trešnjica River, Serbia). International Review of Hydrobiology94(6), 673-687.