Upgrade for evaporation unit for wastewater

World Pumps ◽  
2018 ◽  
Vol 2018 (12) ◽  
pp. 4
Keyword(s):  
2015 ◽  
Vol 5 (3) ◽  
pp. 392-401 ◽  
Author(s):  
David N. Bethune ◽  
Angus Chu ◽  
M. Cathryn Ryan

A prototype urine evaporation unit (UEU) that removes water from human urine produced from a urine-diverting dry toilet using passive solar evaporation was designed and field-tested at a meteorological station. Municipal water was evaporated on vertically stacked plastic cafeteria-style trays that create a large evaporation surface with a small land-area footprint. The trays were located inside a Plexiglas® enclosure exposed to UV light while passively heating the UEU like a solar oven. A metal black chimney also heated up in the sun, causing air to enter the UEU at the front of the UEU through a louvered vent, flow across each tray, and then exit at the back up through the chimney. The UEU was field-tested in a semi-arid temperate climate (Calgary, Canada) from 22 August to 5 November 2013. The average UEU evaporation rate was 3.2 L/day (0.66 mm), varying from 0.4 L/day (0.08 mm/day) on a cloudy day to 8.8 L/day (1.82 mm) on a sunny day. A multiple-regression analysis indicates that 63% of the UEU evaporation rate can be explained by changes in air temperature, wind speed and incoming solar radiation, thus allowing for predictions of the UEU's relative evaporation potential in other climates.


2011 ◽  
Vol 47 (5-6) ◽  
pp. 301-304
Author(s):  
Yu. V. Kartovskii ◽  
V. B. Chernozubov ◽  
K. V. Glushko ◽  
V. A. Chemezov ◽  
D. S. Tretyakov ◽  
...  

Vacuum ◽  
1968 ◽  
Vol 18 (8) ◽  
pp. 477-484
Keyword(s):  

1999 ◽  
Vol 581 ◽  
Author(s):  
A. Hoel ◽  
L.B. Kish ◽  
R. Vajtai ◽  
G.A. Niklasson ◽  
C.G. Granqvist ◽  
...  

ABSTRACTTungsten oxide is a material of significant interest for applications in several areas. It can, for example, be used as the electrochromic film in smart windows. Tungsten trioxide nanoparticles were produced using an advanced gas evaporation unit in which the tungsten was oxidized in low pressure ambient air. The tungsten trioxide particles were formed via vapor condensation and were deposited by gas deposition technique to avoid coagulation effects. The average size of the primary particles was around 5 nm, depending on the heating power and the pressure. The particles exhibited a body centred cubic structure. The impedance spectrum of particle deposits showed resonance and negative capacitance effects. The correlation between fabrication conditions, structure and impedance spectrum is discussed.


Author(s):  
A. V. Fominykh ◽  
V. G. Chyumakov ◽  
N. A. Kovshova ◽  
D. P. Ezdin ◽  
M. N. Kostomakhin

Humic drugs have a wide range of biological activity, affecting the metabolic processes in the body of animals and humans. Humins play a vital role in protecting the intestine from infections and favorably affect its functions, have the potential to suppress mold and bacterial growth, and reduce the level of toxins. When goats received humic substances they had higher milk yields, while significantly reducing total blood cholesterol. Sodium humate administered to broiler chickens increases the live weight by an average of 5–7 % and the livability of poultry by 3–5 %. The influence of humic acid on the quality of laying and egg quality in Japanese quails has been studied. The implementation of socio-economic and environmental programs of the agro-industrial complex provides for the improvement of technologies and technical means for the production of compound feed and protein-mineral vitamin additives for farm animals and poultry. The purpose of the research was to select a vacuum evaporation plant to increase the concentration of humic gel. It has been found that to increase the concentration of humic gel, it is advisable to use a vacuum evaporation plant with an ejector and a steam condenser. Methods for calculating the parameters of the ejector and the pressure reduction process in a vacuum evaporation unit have been developed. The dependences obtained to study the correlation between the area and the diameter of the nozzle water-air ejector, mass flow inject air, water pressure before the working nozzle, pressure inject air, density of the working water, pressure after the ejector, pressure of saturated steam, working temperature of water, temperature inject air, pressure reduction time.


2011 ◽  
pp. 69-73
Author(s):  
C. Satish Kumar ◽  
Tonmoy Banerjee ◽  
Uttam Giri ◽  
Rosalin Pradhan ◽  
Ramu Saha ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document