MIL-HDBK-1005/9A
4.4.5
Equipment Accuracy. Equipment accuracy tolerances
should be as low as possible and consistent with the functions
desired.
4.4.6
Equipment Ranges. Before selecting equipment such as
meters or feeders, compute the required maximum and minimum
capacities, and keep ranges as narrow as possible for any piece
of equipment.
4.4.7
New Products. New products and applications are
constantly being developed. Approval or advice on their uses
may be requested from NAVFACENGCOM.
4.5.
Information Required. Obtain the following
information to assist in equipment selection:
a)
Type of treatment.
b) Chemical, physical, and bacteriological qualities
of raw wastewater, treated wastewater, and permissible discharge
limits.
c)
Variations of flow rate for raw wastewater.
d)
Ranges of other related variables.
e)
Size of treatment plant.
f)
Effluent disposal conditions.
4.6
Wastewater Treatment Systems
4.6.1
Primary Measuring Devices
4.6.1.1
Location and Purpose. Primary measuring devices are
required at critical locations in wastewater treatment systems
to sense and measure flow, pressure, elevation, temperature,
weight, and physical and chemical characteristics of process
streams. For type of device, see Table 17. For examples of
location of measuring devices and types of measurements for
industrial waste treatment systems, see Table 18.
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