MIL-HDBK-1005/9A
on any new or retrofitted facility. The following paragraphs
summarize items that need to be considered. The guidelines have
been grouped into four categories: design factors, operational
factors, equipment selection, and material selection.
2.7.2
Design Factors.
The following points should be
considered:
a) Effluent discharge limits set by regulatory
agencies should be evaluated closely and renegotiated with the
issuing agency (if there is sufficient justification) prior to
proceeding on facility plant design.
b) Treatment operational requirements should be kept
as simple as possible. Use instrumentation and controls only to
reduce operating manpower requirements or hazard exposure.
Highly automated control systems have not been successful at
Navy facilities. The degree of automation should be optimized
by balancing specific project factors. For example, a highly
automated system that requires a few well trained operators and
considerable instrument maintenance must be compared against a
system with less automation but greater operator attention. The
degree of automation must reflect the specific Navy facilities
staffing capabilities. In most instances, this will include
automatic feed system, motorized valves, and other systems that
minimize relatively simple treatment tasks.
c) Operational considerations must be closely
coordinated with waste treatment plant design to achieve an
efficient and reliable facility.
d) Collection sewers, pumping facilities, and
treatment tanks for acids and cyanides should be located
completely separate from each other to avoid severe safety
hazards and mixing. Facilities should be separate and designed
so that spills or leaks could not result in cross connection
between the acid and cyanide operations.
e) Leakage of industrial wastes or sludges from any
container or vessel such as tanks, pipes, and sand drying beds
must be avoided. Provide emergency drains and spill containment
area drains.
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