Optimization of Flocculation/Flotation in Chemical Wastewater Treatment

1987 ◽  
Vol 19 (7) ◽  
pp. 1233-1236
Author(s):  
H. Ødegaard
Keyword(s):  
Experimental Investigation ◽  
Wastewater Treatment ◽  
Design Criteria

An experimental investigation on flocculation/flotation for wastewater treatment was performed. It was demonstrated that flocculation units which are before flotation units in treatment trains must be designed and operated differently to those before sedimentation units. Recommendations regarding design criteria for both flocculation and flotation units are given.

Optimization of flocculation/flotation in chemical wastewater treatment

1995 ◽  
Vol 31 (3-4) ◽  
pp. 73-82 ◽  
Author(s):  
Hallvard Ødegaard
Keyword(s):  
Experimental Investigation ◽  
Wastewater Treatment ◽  
Chemical Treatment ◽  
Municipal Wastewater ◽  
Design Criteria

An experimental investigation on flocculation/flotation for direct chemical treatment of municipal wastewater was carried out. It was demonstrated that flocculation units prior to flotation must be designed and operated differently to those used prior to sedimentation. Recommendations regarding design criteria both for the flocculation unit and the flotation unit are given.

Kinetics of organic matter and ammonia removal in horizontal reed beds treating wastewater in Nepal

2015 ◽  
Vol 72 (11) ◽  
pp. 1981-1987
Author(s):  
Keshav Raj Bista ◽  
Nawa Raj Khatiwada ◽  
Srijana Khyaju
Keyword(s):  
Organic Matter ◽  
Wastewater Treatment ◽  
Rate Constant ◽  
Rational Design ◽  
Reaction Rate ◽  
Subsurface Flow ◽  
Reaction Rate Constant ◽  
Climatic Conditions ◽  
Ammonia Removal ◽  
Design Criteria

In Nepal, both horizontal bed and vertical bed subsurface flow constructed wetlands have been used for wastewater treatment. However, these units were designed based on the empirical findings from other countries. The rational design criteria developed so far has some limitations as the performance of the units is sensitive to the behaviour of the microorganisms, climatic conditions and other attributes pertaining to the local contexts. Secondly, only limited numbers of studies have been carried out to assess the performance of these systems leading to the development of rationale design criteria. Considering these facts, the major objectives of the study were set to: (1) evaluate the performance of the subsurface flow reed bed system in terms of organic matter and ammonia removal; (2) estimate the reaction rate constant and effective specific surface area; (3) assess the relationship between performance and age of the system; and (4) investigate the dynamic behaviour of the reaction rate constant. The study was carried on three full-scale domestic wastewater treatment units and one pilot-scale ranging the age of horizontal beds from 1 to 5 years.

An experimental investigation of wastewater treatment using electron beam irradiation

2016 ◽  
Vol 125 ◽  
pp. 82-87 ◽  
Author(s):  
M. Emami-Meibodi ◽  
M.R. Parsaeian ◽  
R. Amraei ◽  
M. Banaei ◽  
F. Anvari ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Wastewater Treatment ◽  
Electron Beam ◽  
Electron Beam Irradiation ◽  
Beam Irradiation
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