[Optimization Study on the Nitrogen and Phosphorus Removal of Modified Two- sludge System Under the Condition of Low Carbon Source].
Huan Jing Ke Xue
; 37(4): 1492-8, 2016 Apr 15.
Article
em Zh
| MEDLINE
| ID: mdl-27548974
ABSTRACT
This paper explored the method of resolving insufficient carbon source in urban sewage by comparing and analyzing denitrification and phosphorus removal (NPR) effect between modified two-sludge system and traditional anaerobic-aerobic-anoxic process under the condition of low carbon source wastewater. The modified two-sludge system was the experimental reactor, which was optimized by adding two stages of micro-aeration (aeration rate 0.5 L · mm⻹) in the anoxic period of the original two-sludge system, and multi-stage anaerobic-aerobic-anoxic SBR was the control reactor. When the influent COD, ammonia nitrogen, SOP concentration were respectively 200, 35, 10 mg · L⻹, the NPR effect of the experimental reactor was hetter than that of thecontrol reactor with the removal efficiency of TN being 94.8% vs 60.9%, and TP removal being 96.5% vs 75%, respectively. The effluent SOP, ammonia, TN concentration of the experimental reactor were 0.35, 0.50, 1.82 mg · L⻹, respectively, which could fully meet the first class of A standard of the Pollutants Emission Standard of Urban Wastewater Treatment Firm (GB 18918-2002). Using the optimized treatment process, the largest amounts of nitrogen and phosphorus removal per unit carbon source (as COD) were 0.17 g · g⻹ and 0.048 g · g⻹ respectively, which could furthest solve the lower carbon concentration in current municipal wastewater.
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Base de dados:
MEDLINE
Assunto principal:
Fósforo
/
Esgotos
/
Carbono
/
Purificação da Água
/
Desnitrificação
/
Nitrogênio
Idioma:
Zh
Ano de publicação:
2016
Tipo de documento:
Article