Water Quality Trading Using Tradable Permit in Biodiversity of River and Assessment of Efficiency of Expense

Background & Aims of the Study: Due to one-way flow of water in rivers Guilan,pollution trade theory and the system of Ratio-Trade (TRS) and Streeter - Phelps equationhas been used. This system, with a view of the river self- purification and how thedistribution and transport of pollutants, determined Ratio-Trade system (TRS) between theunits and using this method offers optimal pattern of pollution trade between emissionsunits.Materials & Methods: Generally implementation of pollution trading plan was performedusing transmission coefficient in the study area in 5 stages: zonation of the study area,qualitative changes in the dissolved oxygen (DO) and biochemical oxygen demand (BOD5)along the Langeroud river, defining the standard total output load for each region and theinitial allocation between the emission sources, defining the transmission coefficientsbetween the emission sources and different regions, trading ratio model (TRS)Results: Proving the implementation of pollution trading implementation in the urban andindustrail units wastewaters in Langeroud and offering the buy and selling plan amongthese units, traditional livestock laughter unit will produce 30 m3/day, Langeroud urbansewage produces 15705 m3/day and the tanning unit produces 18 m3/day waste water daily.Conclusions: The cost of Emissions trading differs between countries because theMarginal Abatement Cost Curve (MAC) — the cost of eliminating an additional unit ofpollution — differs by country. It is expected that trade can only function and contribute tothe improvement of water quality when it is considered a cheaper option, i.e. cheaper thanthe violation of a permit limit.

Keywords:

pollution trade , River QualityManagement , Streeter -Phelps equation , Ratio-Tradesystem (TRS) , LangroodRiver , Chalcalburnuschalcoides