The Efficiency of a Novel Cycling Flow Baffled Reactor Performance for the Removal of Nitrogen and Organic Matter from Wastewater
Journal Title: UNKNOWN - Year 2018, Vol 10, Issue 2
Abstract
Background and Objectives: Nitrogen is a potential pollutant of water resources. They penetrate in water resources through insufficiently treated wastewater that is rich in nitrogen. The present study aimed at evaluating the efficiency of an anoxic/aerobic cycling reactor (AACR) with continuous flow in removing nitrogen and organic matter from wastewater. Methods: Experiments were performed using a reactor with continuous intermittent influent and effluent. In this reactor, 4 phases with aeration and mixing cycles were designed and efficiency of each phase in removing nitrogen compounds was evaluated at 600 mg/L chemical oxygen demand (COD) concentration, 40 mg/L ammonia concentration, and 18- to 30-hour hydraulic retention times (HRT). Results: Results demonstrated that all cycles had great performance in removal of COD. Average COD removal efficiencies in phases 1, 2, 3, and 4 were 93%, 96.3%, 96%, and 94%, respectively. In phase 2, removal efficiency of 98.7% was obtained at hydraulic retention time of 24 hours, COD concentration of 600 mg/L, and ammonia concentration of 40 mg/L. Conclusions: Phase 2 showed great efficiency in removal of nitrogen compounds. Combination of anoxic aeration stages and short cycles in anoxic/aerobic cycling reactor resulted in great performance of this reactor in removing nitrogen from wastewater. As a result, continuous influent and effluent flow, and not needing external carbon resulted in AACR good performance in removing nitrogen compounds and organic materials.
Authors and Affiliations
Leila Abbasi, Abooalfazl Azhdarpoor, Mohammad Reza Samaei
Keywords
Related Articles
- EP ID EP292521
- DOI 10.5812/jjhs.58927
- Views 48
- Downloads 0
Validation of Environmental Stress Index by Measuring Infrared Radiation as a Substitute for Solar Radiation in Indoor Workplaces
Background: The exposure of individuals to heat at different jobs warrants the use of heat stress evaluation indices. Objectives: The aim of this study was to validate environmental stress index using an infrared radiat...
Isobologram Curve of Leishmanicidal Effects of Amiodarone and Ketoconazole
Background: Leishmaniasis is a zoonotic parasitic infection with a worldwide distribution. Ergosterol and stigmasterol, equivalent to mammalian cholesterol, are the key sterols in Leishmania species, and thus can be used...
Operation of Moving Bed Biofilm Reactor in Terms of Organic Matter and Triethylene Glycol from Simulated Petrochemical Wastewater
Background: Triethylene glycol (TEG) is an organic compound of the two-factor or di-alcohol alcohols and is used as a vinyl plasticizer. TEG has high toxicity and is classified in the chemical and polymer production grou...
Fraud Identification of Cow’s Milk in Buffalo’s Milk and It’s Products Using the Polymerase Chain Reaction
Background: In the dairy industry, protection against species substitution or admixture is important for several reasons, including frequent human adverse reactions toward some species milk proteins, and trade and govern...
Assessment and Design of Illumination in a Steel Manufacturing Company in Ahvaz, Iran
Background: Illumination is a physical factor in workspaces. This factor is an important risk factor for vision health, employees comfort, preventing accidents etc. and should be standardized. Objectives: The current st...