Inside the System
MIOX System Enclosure The MIOX system electrolytic cell, power supply,
and controls are key components of MIOX’s technology. In this section they
are revealed in image and text.
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Electrolytic Cell
The electrolytic cell is the heart of the MIOX on-site generator.
It is contained in the upper enclosure of the cabinet-style models.
The RIO series cell can be expanded by 5X within a single cabinet.
The smaller capacity systems have the cell mounted on a back plate
attached to the wall. The disinfectant solution is created by electrolyzing
brine solution in the cell. |
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Power Supply
MIOX systems’ power supply
rectifies 220 or 480 volt AC power (or other power sources as the
customer may dictate) down to high amperage, direct current power
for the cell. This is modified per system requirement, to optimize
performance.
Medium and larger cabinet-style systems all utilize three-phase
power as standard, typically greater than 400 volts. The smaller
wall-mounted models use 220 VAC power as a standard and use direct-current
voltages at the electrolytic cells, recognized in the industry as
non-lethal. All systems utilize door interlocks to protect personnel
from high voltage power sources.
For long life and reliable operation, MIOX utilizes transformer-based
systems that have very low-duty cycles.
Cabinet enclosures made of HDPE for the RIO series and stainless
steel for the large cell systems reduce the possibility of corrosion
from materials common in water treatment plants (i.e. alum and polymers,
etc.). With the enclosed cabinets, the system can also be cleaned
with high pressure sprayers without concern for damage to electrical
components. |
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MIOX Controls
Every MIOX system incorporates an embedded controller to monitor
and control the functions of each electrolytic cell, achieving complete
system operational redundancy. This is particularly important for
multiple cell systems where regulatory or customer requirements dictate
system redundancy.
The control panel reflects operating parameters including cell amperage
and brine pump voltage. The controller also serves as a diagnostic
tool to correct system issues. Standard controls include:
- cell purge
on startup and shutdown to prevent electrical surges and to lengthen
the life of the cell
- a slow ramp-up to the amperage set point to reduce
hydrogen gas bubbling at startup and for gradual load addition
- high cell current protection
- brine pump overspeed alarms to provide maintenance notification
before failure
- thermal switch on the power supply for an upset condition
- alarms for low voltage on primary and auxiliary power supplies
The standard control system incorporates an alarm output relay and
a serial data port to provide comprehensive data output to a MIOX-supplied
local control panel for the complete disinfection system, or to a
plant SCADA system. The RIO series utilizes the Allen Bradley MicroLogix
1200 PLC. MIOX has extensive experience integrating these control
systems into a variety of customer plant SCADA platforms. |
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Plumbing Manifold
To regulate chlorine production, which is directly related to
the amperage applied to the MIOX cell, the variable speed brine pump
incorporated in the system will speed up or slow down to respond
to variations in cell amperage. This eliminates the need to manually
calibrate the pump. Temperature is monitored at the inlet and outlet
of the cell to prevent operation outside of the acceptable range,
therefore protecting the cell from damage. |