Enhancing Biological Nutrient Removal from Real Domestic Wastewater by Using Iron Shavings

Abstract:

Feasibility of enhancing nutrient removal in municipal sewage plant by using iron shavings in conventional biological treatment reactor was evaluated. Results of 209-days bench-scale test indicate that this method is feasible in practice. Compared to control test, TN and TP removal was increased 8.72 % and 57.83 %, respectively，by adding 400 g iron shavings in 75 L biological reactor. Effluent TP concentration could attain level 1A (0.5 mg L-1) of China's urban sewage treatment plants discharge standards; Total iron concentration in effluent was 0.249 mg L-1 and iron consumption rate was 762.7 mg d-1 during stable period. The enhancing effect of iron shaving on nutrient removal is easy to achieve and low-cost. It is worth investigating in a deep-going way.

• Periodical: Applied Mechanics and Materials (Volume 164)
• Pages: 517-520
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.164.517
• Online since: April 2012
• Authors: Zi Wang, Zhe Chen, Hong Wu Wang, Lu Ming Ma
• Keywords: Biological Treatment, Enhancement, Iron Shavings, Real Domestic Wastewater

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