Magnetic Field Application and its Potential in Water and Wastewater Treatment Systems

2013 ◽  
Vol 43 (3) ◽  
pp. 206-240 ◽  
Author(s):  
Nur Syamimi Zaidi ◽  
Johan Sohaili ◽  
Khalida Muda ◽  
Mika Sillanpää
Keyword(s):  
Magnetic Field ◽  
Wastewater Treatment ◽  
Field Application ◽  
Water And Wastewater Treatment ◽  
Water And Wastewater ◽  
Wastewater Treatment Systems ◽  
Magnetic Field Application

scholarly journals SOFTWARE DEVELOPMENT FOR HYDRODYNAMIC STUDY IN WATER AND WASTEWATER TREATMENT SYSTEMS

2009 ◽  
Vol 9 (1) ◽  
pp. 31
Author(s):  
Rodrigo Braga Moruzzi ◽  
Marco Antonio Penalva Reali
Keyword(s):  
Wastewater Treatment ◽  
Software Development ◽  
Acoustic Doppler Velocimeter ◽  
Water And Wastewater Treatment ◽  
Hydrodynamic Study ◽  
Water And Wastewater ◽  
Wastewater Treatment Systems

Este artigo apresenta o desenvolvimento de um programa computacional para tratamento dos dados de estudos hidrodinâmicos empregando uma sonda acústica denominada Acoustic Doppler Velocimeter (ADV). O programa desenvolvido foi utilizado em uma unidade piloto de flotação por ar dissolvido (FAD) empregada para tratamento de água e água residuária. Estudos com equipamentos que empregam o princípio Doppler são amplamente empregados para diferentes aplicações, entretanto os dados de saída são apresentados em forma tabular tornando a interpretação difícil e imprecisa. Assim, o programa computacional desenvolvido foi concebido para tratar estatisticamente os dados, calcular e plotar os vetores resultantes bem como produzir gráficos de superfície (3D). Adicionalmente, pode-se gerar cortes em qualquer seção de interesse, criando visualizações em duas dimensões dos vetores resultantes. O programa apresentou-se como uma poderosa ferramenta para incremento de sistemas de tratamento e pode contribuir no estudo hidrodinâmico de reatores em qualquer escala.

A new wastewater treatment system recovering magnetically immobilized microorganisms under strong magnetic field

2004 ◽  
Vol 4 (1) ◽  
pp. 47-54
Author(s):  
H. Ozaki ◽  
S. Kurinobu ◽  
T. Watanabe ◽  
S. Nishijima ◽  
T. Sumino
Keyword(s):  
Magnetic Field ◽  
Wastewater Treatment ◽  
Magnetic Particles ◽  
High Efficiency ◽  
Nitrifying Bacteria ◽  
Water And Wastewater Treatment ◽  
Magnetic Separator ◽  
Gel Particles ◽  
Water And Wastewater ◽  
Immobilized Microorganisms

A new generation of high gradient magnetic separation (HGMS) has recently received attention again, especially for its applications in the field of water and wastewater treatment. The reason for this attention is that a newly developed superconducting magnet can be used to easily generate a high magnetic field, under which even weakly paramagnetic materials can be separated at high efficiency. We have developed a new wastewater treatment process using magnetic gel particles containing immobilized microorganisms and magnetic particles. The magnetic gel particles are separated and recovered from the effluent in water and wastewater treatment processes, and are then recycled to a bioreactor directly or reused after storing. In this research, a novel type of magnetic separator without a filter matrix was designed for the separation and recovery of magnetic gel particles with different magnetic characteristics. No backwashing is required for this new type of separator. By using the separator, polyethylene glycol (PEG) gel particles with 2% magnetite were continuously separated and recovered from the PEG gel particles with 0.04% magnetite at an efficiency of around 90%. The PEG gel particles containing nitrifying bacteria and magnetic particles were available for the oxidation of ammonia solution at a slightly lower nitrification rate than the PEG gel particles with nitrifying bacteria but without magnetite.

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