Model-Based Control of the Ammonia Nitrogen Removal Process in a Wastewater Treatment Plant

Vrečko, Darko; Hvala, Nadja

doi:10.1007/978-1-4471-5176-0_5

Cited by 2 publications

(1 citation statement)

References 23 publications

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“…Moreover, the ammonia free fraction was increased exponentially until a pH of 11 was reached. Also, results by Vrečko and Hvala [42] studied the ammonia removal from wastewater and described ammonia stripping through exponential function under aerobic reactors.…”

Section: Effect Of Temperature and Initial Alkalinity On The Dynamicsmentioning

confidence: 99%

The Influence of Alkalization and Temperature on Ammonia Recovery from Cow Manure and the Chemical Properties of the Effluents

2019

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Manure is a substantial source of ammonia volatilization into the atmosphere before and after soil application. The purpose of the study was to investigate the effects of temperature and alkalization treatments on the release of ammonia and ammonia recovery (AR) from cow manure and to characterize the chemical properties of the resultant effluents. In a closed glass reactor, 100 g of fresh cow manure was mixed with 100 mL of deionized water and the mixture was treated with various volume of KOH to increase the manure pH to 7, 9, and 12. Ammonia was distilled from the mixture at temperatures of 75, 85, 95, and 100 °C for a maximum of 5 h. Ammonia was received as diluted boric and sulfuric acids. Results indicated that the highest ammonia recovery was 86.3% and 90.2%, which were achieved at a pH of 12 and temperatures of 100 and 95 °C, respectively. The recovered ammonia in boric acid was higher than in sulfuric acid, except at a pH of 12 and temperatures of 95 and 100 °C. The effluents, after ammonia was removed, showed that the variation in pH ranged between 6.30 and 9.38. The electrical conductivity ranged between 4.5 and 9. (dS m−1) and total potassium ranged between 9.4 and 57.2 mg kg−1.

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Section: Effect Of Temperature and Initial Alkalinity On The Dynamicsmentioning

confidence: 99%

The Influence of Alkalization and Temperature on Ammonia Recovery from Cow Manure and the Chemical Properties of the Effluents

2019

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Improving total nitrogen removal using a neural network ammonia-based aeration control in activated sludge process

Husin

Rahmat

Wahab

et al. 2021

International Journal on Smart Sensing and Intelligent Systems

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Aeration control is a way to have a wastewater treatment plant (WWTP) that uses less energy and produces higher effluent quality to meet state and federal regulations. The goal of this research is to develop a neural network (NN) ammonia-based aeration control (ABAC) that focuses on reducing total nitrogen and ammonia concentration violations by regulating dissolved oxygen (DO) concentration based on the ammonia concentration in the final tank, rather than maintaining the DO concentration at a set elevated value, as most studies do. Simulation platform used in this study is Benchmark Simulation Model No. 1, and the NN ABAC is compared to the Proportional-Integral (PI) ABAC and PI controller. In comparison to the PI controller, the simulation results showed that the proposed controller has a significant improvement in reducing the AECI up to 23.86%, improving the EQCI up to 1.94%, and reducing the overall OCI up to 4.61%. The results of the study show that the NN ABAC can be utilized to improve the performance of a WWTP's activated sludge system.

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Model-Based Control of the Ammonia Nitrogen Removal Process in a Wastewater Treatment Plant

Cited by 2 publications

References 23 publications

The Influence of Alkalization and Temperature on Ammonia Recovery from Cow Manure and the Chemical Properties of the Effluents

The Influence of Alkalization and Temperature on Ammonia Recovery from Cow Manure and the Chemical Properties of the Effluents

Improving total nitrogen removal using a neural network ammonia-based aeration control in activated sludge process

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