Membrane Bioreactors for Wastewater Treatment Wastewater reclamation is gaining popularity worldwide as a means of conserving natural resources used for drinking water supply. The use of membrane bioreactor (MBR) technology, which combines conventional activated sludge treatment with low-pressure membrane filtration, has been proven to be a feasible and efficient method of producing reclaimed water. This…
Introduction to Valves This course provides a detailed review of the various types of valves, their construction, and their primary functions. The training material provides information about the main types of valves in common use: the globe, gate, plug, ball, needle, butterfly, diaphragm, pinch, check, safety/relief, and reducing valve. Also presented is a general discussion…
Fuel Cells Hydrogen fuel cells present great promise for the future, and have significant advantages over the internal combustion engine or even hybrid power technologies for automobile use. There is, however, a need for infrastructure development for hydrogen production, storage and delivery, as well as for development of the fuel cells themselves. This course provides…
Introduction to Biofuels This course provides information about the Biomass Research and Development Board’s seven point Action Plan for biofuels. Biofuels include ethanol from grain or sugar, diesel fuel from soybeans, ethanol from cellulosic feedstock, and several other feedstock/fuel combinations. The training material includes information about the wide variety of possible biofuels, with greatest emphasis…
Carbon Adsorption for VOCs Activated carbon adsorption is considered a best available control technology by the USEPA and other regulatory agencies. It is widely used in air pollution control applications to remove volatile organic compounds (VOCs) from low to medium concentration gas streams. Carbon adsorption is especially effective when strict discharge concentrations must be met…
Roadway Vertical Alignments Author: Gregory Taylor Roadway vertical alignments are a combination of parabolic curves and connecting tangent grades. Along with the roadway cross section (lanes and shoulders, curbs, medians, roadside slopes and ditches, sidewalks) and horizontal alignment (tangents and curves), the vertical alignment (grades and vertical curves) helps provide a three-dimensional roadway model. Its…