Application of Inhibition Model to Prevent Nitrification Upset in Petrochemical Wastewater Treatment Plant

Ariff, Idzham F. M.

doi:10.1007/978-981-33-6311-3_10

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Nitrifying bacteria belong to the most sensitive group of microorganisms involved in the wastewater treatment process [32,33]. The rate of oxidation of ammonium nitrogen during nitrification is influenced by: dissolved oxygen concentration, pH, total alkalinity, ammonia concentration [34][35][36], C/N ratio [37][38][39], temperature and the presence of inhibitors [40][41][42]. Moreover, in order to prevent the removal of nitrifying bacteria from the system and to maintain a constant effect of NH 4 -N oxidation, a sufficiently long age of the activated sludge and biomass reserve should be ensured [43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Toxic Effect of Ammonium Nitrogen on the Nitrification Process and Acclimatisation of Nitrifying Bacteria to High Concentrations of NH4-N in Wastewater

et al. 2021

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The aim of the conducted research was to assess the effectiveness of the nitrification process, at different concentrations of ammonium nitrogen, in biologically treated wastewater in one of the largest municipal and industrial wastewater treatment plants in Poland. The studies also attempted to acclimate nitrifying bacteria to the limited concentration of ammonium nitrogen and determined the efficiency of nitrification under the influence of acclimated activated sludge in the biological wastewater treatment system. The obtained results indicate that the concentration of ammonium nitrogen above 60.00 mg·dm−3 inhibits nitrification, even after increasing the biomass of nitrifiers. The increase in the efficiency of the nitrification process in the tested system can be obtained by using the activated sludge inoculated with nitrifiers. For this purpose, nitrifiers should be preacclimated, at least for a period of time, allowing them to colonize the activated sludge. The acclimated activated sludge allows reducing the amount of ammonium nitrogen in treated sewage by approx. 35.0%. The process of stable nitrification in the biological treatment system was observed nine days after introducing the acclimated activated sludge into the aeration chamber.

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Section: Introductionmentioning

confidence: 99%

Toxic Effect of Ammonium Nitrogen on the Nitrification Process and Acclimatisation of Nitrifying Bacteria to High Concentrations of NH4-N in Wastewater

et al. 2021

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“…Abbasi, et al (2021) have modeled three WWTP based on conventional activated sludge, contact stabilization, and step aeration and assessed them technically and economically using the Zargandeh treatment plant data in Tehran with GPS-X software [16]. Ariff (2021) used WWTP simulation software to simulate an industrial wastewater treatment plant at a petrochemical complex in Terengganu, Malaysia [17].…”

Section: Introductionmentioning

confidence: 99%

Simulating the dispersion of poisonous organic chemical compounds in wastewater treatment process through the active sludge method using the TOXChem model

Masoomi¹,

Azizi²,

Aghlmand³

et al. 2021

Ann Biomed Sci Eng

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Naturally, microorganisms decompose the organic material existing in nature, both in the presence or absence of oxygen. The majority of materials such as poisonous chemical compounds, heavy metals, would prevent the treatment process from taking place, lead to the entry of these contaminants into the environment results in the emergence of numerous diseases. In the present study, using the TOXChem4.1 simulation model, attempts were made to simulate a wastewater treatment plant and then assess the dispersions of contaminants including 1,2-Dimethylnaphthalene, 1,3-Dinitropyrene, 1,6-Dimethylnaphthalene, 1,6-Dinitropyrene, and 17a-ethinylestradiol (EE2) in concentrations of a common scenario. The results of computer simulations showed that the EE2 contaminant is of the highest percentage of decomposition among others, due to its wider chemical structure. Consequently, it is clear that such contaminant is of the highest mass in the sludge exiting the treatment plant. In addition, the results of the simulations demonstrated that the highest volumes of gaseous pollutants take place in the modulation and initial sedimentation units.

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Application of Inhibition Model to Prevent Nitrification Upset in Petrochemical Wastewater Treatment Plant

Cited by 2 publications

References 5 publications

Toxic Effect of Ammonium Nitrogen on the Nitrification Process and Acclimatisation of Nitrifying Bacteria to High Concentrations of NH4-N in Wastewater

Toxic Effect of Ammonium Nitrogen on the Nitrification Process and Acclimatisation of Nitrifying Bacteria to High Concentrations of NH4-N in Wastewater

Simulating the dispersion of poisonous organic chemical compounds in wastewater treatment process through the active sludge method using the TOXChem model

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