Duluth Co-Disposal Facility

1981 ◽  
Vol 103 (4) ◽  
pp. 262-264
Author(s):  
W. C. Huang ◽  
D. L. Nelson
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Lake Superior ◽  
Waste Water Treatment ◽  
Fluidized Bed Reactor ◽  
Design Criteria ◽  
Basic Design ◽  
System Description ◽  
Disposal Facility ◽  
Western Lake

The world’s first full-scale fluidized bed reactor co-disposal facility located at the Western Lake Superior Sanitary District’s (WLSSD) central waste-water treatment complex in Duluth, Minnesota, began its shakedown operation in the fall of 1979. The authors present herein basic design criteria, a system description, November 1979 system status, and areas of operational concern.

A fluidized-bed reactor: the biolift process

1994 ◽  
Vol 29 (10-11) ◽  
pp. 329-338 ◽  
Author(s):  
R. Badot ◽  
T. Coulom ◽  
N. de Longeaux ◽  
M. Badard ◽  
J. Sibony
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Fluidized Bed ◽  
Waste Water Treatment ◽  
Fluidized Bed Reactor ◽  
Tight Control ◽  
Pilot Plant Scale ◽  
Secondary Air ◽  
Air Lift ◽  
Original Feature

Biological reactors using a culture fixed on a fluidized bed are suitable for many applications in waste water treatment. A large number of studies have been carried out at the pilot-plant scale but none exists at the industrial scale for municipal waste water treatment. Examples are: - Dorr Oliver (Sutton + Mishra) (1) - The Biolex process developed by EBARA (2) - The reactor described by Heijnen (Holland) (3) In the latter two processes, fluidization and aeration are provided by an air-lift system inside the reactor. This article describes the Biolift process whose original feature is that the air-lift system is outside the reactor and is assisted by a system to inject secondary air (process air) into the reactor. This combination allows tight control of fluidization and aeration factors.

Simple design criteria and efficiency of hydrodynamic vortex separators

2014 ◽  
Vol 70 (3) ◽  
pp. 457-463 ◽  
Author(s):  
M. A. Gronowska-Szneler ◽  
J. M. Sawicki
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Laboratory Test ◽  
Positive Feedback ◽  
Waste Water Treatment ◽  
Test Stand ◽  
Design Criteria ◽  
Fish Ponds ◽  
Simple Design ◽  
Test Results

Vortex separators still draw attention from specialists investigating the process of removing particles suspended in liquids. The devices are locally applied for waste water treatment in different systems – from storm waste water sewerage to water circulation in fish ponds. However, the methods for separator design presented in the literature are questionable. The paper presents two simple and functional criteria that were employed to construct a laboratory test stand. The test results gave positive feedback on the efficiency of vortex separators.

scholarly journals Design of Microwave Vitrification Systems for Radioactive Waste

1996 ◽  
Vol 430 ◽  
Author(s):  
T. L. White ◽  
W. D. Bostick ◽  
C. T. Wilson ◽  
C. R. Schaich
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Radioactive Waste ◽  
Research And Development ◽  
National Laboratory ◽  
Waste Water Treatment ◽  
Department Of Energy ◽  
Design Criteria ◽  
Heating Systems ◽  
Oak Ridge

AbstractOak Ridge National Laboratory (ORNL) is involved in the research and development of highpower microwave heating systems for the vitrification of Department of Energy (DOE) radioactive sludges. Design criteria for a continuous microwave vitrification system capable of processing a surrogate filtercake sludge representative of a typical waste-water treatment operation are discussed. A prototype 915-MHz, 75-kW microwave vitrification system or “microwave melter” is described along with some early experimental results that demonstrate a 4 to I volume reduction of a surrogate ORNL filtercake sludge.

The new technology of waste water treatment by using bioreactors with bio membranous movable bed – biochips

2020 ◽  
Vol 10 (3) ◽  
pp. 276-292
Author(s):  
Maria Y. Savostyanova ◽  
◽  
Lidia А. Norina ◽  
Arina V. Nikolaeva ◽  
◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Water Resources ◽  
Waste Water Treatment ◽  
Combined Treatment ◽  
Research Work ◽  
Pollution Level ◽  
Waste Waters ◽  
Treatment Facilities ◽  
Movable Bed

Retaining of water resources quality is one of the global ecological problems of the modern time. The most promising direction in solving the problem of water resources protection is the reduction of negative environmental influence of waste water from production facilities by upgrading the existing water treatment technologies. To treat utility water, technical and rain water from site facilities of Transneft system entities, the specialists developed and approved standard technological diagrams, which are used in producing treatment facilities. The standard technological diagrams provide for all necessary stages of waste water treatment ensures the reduction of pollution level to normal values. However, during operation of treatment facilities it was established, that to ensure the required quality of waste water treatment with initially high levels of pollution, the new technological solutions are necessary. The author presents the results of scientific-research work, in the context of which the best affordable technologies were identified in the area of the treatment of waste water with increased content of pollutants and non-uniform ingress pattern. On the basis of the research results the technical solutions were developed for optimization of operation of existing waste water treatment facilities by means of using combined treatment of technical and rain waters and utility waste waters and applying bioreactor with movable bed – biochips. The use of bioreactor with movable bed allows the increase in the area of active surface, which facilitates increase and retention of biomass. Biochips are completely immersed into waste waters, and biofilm is formed on the entire volume of immersion area, facilitating retention of biomass and preventing formation of sediments. Due to mixing the floating device with biofilm constantly moves along the whole area of bioreactor, and, in doing so, speeds up biochemical processes and uniformity of treatment. The advantages of a bioreactor with movable bed – its active sludge durability against increased and changing pollutant concentrations, change of waste water temperature and simplicity of application – ensured the possibility of its use for blending utility waters, technical and rain waters.

REVIEWS OF ELECTROCOAGULATION PROCESS ON WASTE WATER TREATMENT TECHNOLOGY

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Taty Hernaningsih
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Removal Efficiency ◽  
Industrial Waste ◽  
Waste Water Treatment ◽  
Treatment Technique ◽  
Industrial Waste Water ◽  
Strong Current ◽  
Current Voltage ◽  
Electrocoagulation Process

Waste water treatment by industry usually uses chemicals that may lead to additional environmental pollution load. On the other hand, water demand increases and environmental regulations regarding waste water disposal requirements that apply more stringent. It is necessary for waste treatment technique that accommodate this requirement. Electrocoagulation process is a technique of wastewater treatment that has been chosen because the technique is environmentally friendly. This paper will review some of the research or application electrocoagulation process which is conducted on industrial waste water. Types of industrial waste water that is to be reviewed include: industries batik, sarongs, textiles, palm oil, slaughterhouses, food, leather tanning, laundry, pulp and paper. Overview reviewed in this research include the waste water treatment process in several processing variations such as: change in time, electricity and kind of electrodes. The results of the research with electrocoagulation process in the industry are the removal efficiency of TSS, COD, BOD5, Chrome, phosphate, surfactants, color turbidity influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. The results of the study with electrocoagulation process in the industry is the removal efficiency of TSS, COD, BOD5, chromium, phosphate, surfactant, turbidity color that are influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. It is hoped the information presented in this article can be a reference for similar research for the improvement of research on the process ektrokoagulasi.Key words: elektrocoagulation, removal eficiency, environmental friendly

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