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- Go to configuration in the process controller.
- In the top left corner there are methods, files, etc. buttons, and an icon that looks like an open folder. Click on the folder.
- Open the Fall 2008 folder (or a newer folder).
- Open Sept 9 2008 (or any configuration that may have been saved later).
Changing the alum dose
- Open process controller.
- Go to the Configuration tab.
- Click "Edit Rules."
- In the menu on the left-and side, go to "alum dose not increment" and change the value.
There is a leak
(/)Determine the source of the leak.
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- If the pipe connects the flocculator to the sed tank, plug the inlets with the screw caps already created. The benefit to this over just turning off the plant is that the flocculator can continue to run, since the water can leave through the weir in the flocculator which usually just handles excess flow.
Dry off the pipe with a towel. This is essential, as the caulk will not set properly if it is wet. Wait at least a few hours or a day to ensure that the surface is dry.
- Caulk the pipe, paying special attention to the bottom of the seal. The cure time is usually 24-48 hours, so leave . Leave the pipes plugged for this duration length of time.
- If water continues to leak, make sure that the leak is not coming from another location, and repeat the above steps if necessary.
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- Toggle the pump on and off. If this doesn't work:
- The pump that drives the water through the plant may not be operating properly. There may be objects caught in the screen (e.g. leaves) or there may be electrical issues. Clean the screen on the pump or toggle the pump on and off a few times. (As always, ask one of the operators if you're unsure of what to do.)
- The turbidity of the incoming water may be fairly low, and the alum dose may be too high. Lower the alum dose slightly:
- Open process controller.
- Go to the Configuration tab.
- Click "Edit Rules." In the menu on the left-and side, go to "alum dose not increment" and change the value.. (See above.)
If the effluent water is turbid and does not contain large flocs, but the water is not unsually white, the alum dose probably is not high enough. Increase the alum dose in Process Controller to account for the increased turbidity. (See above.) This is likely to occur if there has been a lot of rain.
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