Investigation of the effect of removal of precuticle with different concentrations using continuous biological aeration process

Introduction: One of the important issues to achieve sustainable development is to pay attention to environmental management. On the other hand, one of the important issues that threaten the health of the environment are resistant and toxic compounds that enter the environment through industrial wastewater. Among the various pollutants, phenol and its derivatives (cuticle) are of special importance. The aim of this study was to investigate the removal of pre-cuticles with concentrations (5, 10 and 25 ml) using the biological process of continuous aeration and considering the hydraulic retention time and organic charge concentration.Methods: The present study is an experimental-laboratory study in which the effect of variables of initial concentration of pericticol (5,10,25,75,100 mg / l), hydraulic retention time (2,5,8,24 hours) concentration Input load (100,150,200) mg / L was investigated for pericardial removal in a continuous aeration biological reactor.Results: The results showed that the removal efficiency of pericticol at the input concentration of 25 mg / l, the hydraulic retention time of 8 hours and in BOD5 the input at 150 mg / l in the aeration reactor was the highest and the hydraulic retention time was 5 hours at the concentration of 100%. Is . However, at a concentration of 100 mg, a time of 8 hours in BOD 150 mg / l is the highest value.The results show that with increasing the input BOD, the removal percentage increases and with increasing the input cuticle concentration, the removal percentage decreases. Discussion & Conclusion: The results of this study indicate that the process of biodegradation of continuous aeration can have a good efficiency in removing the pericarp and the results showed that the removal efficiency can be 99%.