Make-up water Water that is added to the tower to replenish water losses due to
evaporation, drift, blow-down, and other miscellaneous water losses.
Marina dredging It is an operation for maintaining the depth of a marina, whether
private or public, is vital to both marina owners and the customers they serve.
Adequate channel depths allow boaters to safely move in and out while protecting
vessels from damage.
Masking agents Substances used to cover up or disguise unpleasant odors. Liquid
masking agents are dripped into the wastewater, sprayed into the air, or evaporated (using heat) with the unpleasant fumes or odors and then discharged into the
air by blowers to make an undesirable odor less noticeable.
Mason bee (Osmia cobaltina) This bee nests in the ground or in natural cavities in
wood. Mason bees lack the pollen baskets on their tibiae. They carry their pollen
in a “pollen brush” on the underside of the abdomen. They are natural bees of
wild species, not affecting humans.
Mathematical modeling The process of developing a mathematical model is
termed mathematical modeling.
Mathematical models A mathematical model is a description of a system using
mathematical concepts and language. A model may help to explain a system and
to study the effects of different components, and to make predictions about costs,
impact, population, behavior, frequency, etc.
Mechanical aeration The use of machinery to mix air and water so that oxygen can
be absorbed into the water.
Mechanical dredging It is an operation for removing debris or compressed hardened elements from below the water using a clamshell type bucket or heavy-duty
excavator. This method is preferred when both dredging and placing elements
nearby onshore or onto a barge for further transport to a designated disposal
location.
Megacities Cities with populations over ten million.
Melliferous It is a situation of yielding or having to do with honey.
Membrane bioreactor (MBR) Currently it is one of suspended growth biological
processes (such as activated sludge process) involving the use of a bioreactor
(such as an aeration tank) for carbonaceous oxidation, nitrification and/or denitrification, and the use of membrane filtration for subsequent bioreactor effluent
treatment. The membrane filter discharges the membrane filter effluent (as the
product water), recycles certain amount of activated sludge to the bioreactor, and
wastes the excess amount of activated sludge. It the future, an MBR may also be a
combination of an attached growth bioreactor and a membrane filter.
Metadata It is the information about a data set. It may include the source of the
data; its creation date and format; its projection, scale, resolution, and accuracy;
and its reliability with regard to some standard.
Metazoan It is a group of small animals that may be present in wastewater having
bodies composed of cells that are differentiated into tissues and organs, such as
rotifers, water bears, and daphnia.
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evaporation, drift, blow-down, and other miscellaneous water losses.
Marina dredging It is an operation for maintaining the depth of a marina, whether
private or public, is vital to both marina owners and the customers they serve.
Adequate channel depths allow boaters to safely move in and out while protecting
vessels from damage.
Masking agents Substances used to cover up or disguise unpleasant odors. Liquid
masking agents are dripped into the wastewater, sprayed into the air, or evaporated (using heat) with the unpleasant fumes or odors and then discharged into the
air by blowers to make an undesirable odor less noticeable.
Mason bee (Osmia cobaltina) This bee nests in the ground or in natural cavities in
wood. Mason bees lack the pollen baskets on their tibiae. They carry their pollen
in a “pollen brush” on the underside of the abdomen. They are natural bees of
wild species, not affecting humans.
Mathematical modeling The process of developing a mathematical model is
termed mathematical modeling.
Mathematical models A mathematical model is a description of a system using
mathematical concepts and language. A model may help to explain a system and
to study the effects of different components, and to make predictions about costs,
impact, population, behavior, frequency, etc.
Mechanical aeration The use of machinery to mix air and water so that oxygen can
be absorbed into the water.
Mechanical dredging It is an operation for removing debris or compressed hardened elements from below the water using a clamshell type bucket or heavy-duty
excavator. This method is preferred when both dredging and placing elements
nearby onshore or onto a barge for further transport to a designated disposal
location.
Megacities Cities with populations over ten million.
Melliferous It is a situation of yielding or having to do with honey.
Membrane bioreactor (MBR) Currently it is one of suspended growth biological
processes (such as activated sludge process) involving the use of a bioreactor
(such as an aeration tank) for carbonaceous oxidation, nitrification and/or denitrification, and the use of membrane filtration for subsequent bioreactor effluent
treatment. The membrane filter discharges the membrane filter effluent (as the
product water), recycles certain amount of activated sludge to the bioreactor, and
wastes the excess amount of activated sludge. It the future, an MBR may also be a
combination of an attached growth bioreactor and a membrane filter.
Metadata It is the information about a data set. It may include the source of the
data; its creation date and format; its projection, scale, resolution, and accuracy;
and its reliability with regard to some standard.
Metazoan It is a group of small animals that may be present in wastewater having
bodies composed of cells that are differentiated into tissues and organs, such as
rotifers, water bears, and daphnia.
464
M.-H. S. Wang and L. K. Wang