Utilization of created wetlands to upgrade small municipal wastewater treatment systems

1990 ◽  
Vol 50 (3-4) ◽  
pp. 371-385 ◽  
Author(s):  
Robert E. Pride ◽  
J. Steve Nohrstedt ◽  
Larry D. Benefield
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Created Wetlands ◽  
Municipal Wastewater Treatment ◽  
Wastewater Treatment Systems

Application of Biotechnology to Municipal Wastewater Treatment

1991 ◽  
Vol 23 (10-12) ◽  
pp. 1723-1732 ◽  
Author(s):  
T. Matsui ◽  
S. Kyosai ◽  
M. Takahashi
Keyword(s):  
Wastewater Treatment ◽  
Genetic Engineering ◽  
Municipal Wastewater ◽  
Engineering Application ◽  
Municipal Wastewater Treatment ◽  
Sludge Treatment ◽  
National Project ◽  
Wastewater Treatment Systems ◽  
Raw Wastewater

Application of biotechnology to wastewater treatment for its improvement and greater understanding was investigated in the Japanese national project named Biofocus WT as to a microorganism bank, genetic engineering application, immobilization of microorganisms, bioreactors for wastewater treatment, bioreactors for sludge treatment, SS separators for raw wastewater, biosensors and new wastewater treatment systems.

15 years of practical sewage treatment in Venezuela

1996 ◽  
Vol 33 (3) ◽  
pp. 39-46 ◽  
Author(s):  
M. Lansdell
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Sewage Treatment ◽  
Spare Parts ◽  
Years Of Experience ◽  
Municipal Wastewater Treatment ◽  
And Performance ◽  
Simple Systems ◽  
Wastewater Treatment Systems

A summary of fifteen years of experience of the design, operation and performance several Venezuelan municipal wastewater treatment systems to serve a population of 5 million is presented. Technical and institutional problems which occurred during construction and operation are described and some of the solutions are presented. It was found that the most simple systems were the most effective and that it was important to develop solutions appropriate to local needs and avoid the technological dependance on imported spare parts.

scholarly journals Biofoam formation and defoamation in global wastewater treatment systems

2020 ◽  
Author(s):  
Cynthia Dlangamandla ◽  
Moses Basitere ◽  
Benjamin Ifeoluwa Okeleye ◽  
Boredi Silas Chidi ◽  
Seteno Karabo Obed Ntwampe
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Foam Stability ◽  
Oxygen Demand ◽  
Foam Formation ◽  
Municipal Wastewater Treatment ◽  
Factors Affecting ◽  
Review Reports ◽  
Foam Forming ◽  
Wastewater Treatment Systems

Abstract Municipal wastewater treatment is largely based on activated sludge (AS) systems due to their ability to reduce biological and chemical oxygen demand (BOD/COD). They are similarly efficient in nitrification and denitrification. However, major drawbacks such as foaming associated with the prevalence of lipids (fats, oil, grease (FOG)) and proteinaceous material arise, which reduces AS efficiency – a focus of this review. Many strategies are employed for foam reduction in AS systems, where proliferation of foam-forming microorganisms can be challenging. To understand foam formation, prevention and deterioration, including destabilization, a multidisciplinary mitigation approach is required, in which some bioprocess aspects such as foam destabilization kinetics should be understood and quantified. This review reports on biological foam formation and source in wastewater treatment, defoaming strategies, and biofoam destabilisation kinetics as well as factors affecting foam stability.

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