All of the processes described above are automatically controlled by a centralized programmable logic controller (PLC). Information from each of 1500 data points is updated approximately every 45 milliseconds. Alarm points in tanks notify operators whenever manual intervention is necessary. Similarly, the automatic controller continuously monitors the effluent discharge for pH and turbidity — the two primary indicators that the treatment process is under control. In the event an upset is detected, the controller automatically diverts the flow back to the equalization/holding tanks. The wastewater treatment plant can continue operating in this manner for up to 48 hours without the need to shutdown manufacturing. In the meantime, the upset can usually be corrected. This fail-safe system ensures that NewStream maintains the highest standard of compliance and process reliability.
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