pH Control in Wastewater

So you’ve run your cement wastewater and slurry through a filter press to clean it, and it’s ready to be reused or dumped—WRONG! You’re on the right path by making sure it’s clean and by not dumping wastewater, but you need to make sure the pH balance of the water is at the appropriate level. This is especially important when it comes to cement wastewater, which has a high alkaline pH.  Once pH levels are lowered and permit requirements are met, water can be reused, discharged into the municipal water system, or used to clean cement trucks.


Controlling pH levels is also an important step during the wastewater treatment process, as

pH levels can affect the solubility of certain solids in wastewater. It can be beneficial to raise or lower pH levels to treat water and clean water more effectively because of this. Many times, though, water doesn’t need to be treated until after it is clarified. Once water is clarified, pH should be adjusted so that water can be reused. It also needs to meet discharge requirements and regulations prior to discharge, or you could be subjected to serious penalties.


What are the consequences of water with high pH levels? Water high in pH tends to cause excessive scaling. This is especially true for concrete wastewater. High levels of pH are hard on plumbing components. Working with this kind of water is also uncomfortable, as it can dry out the skin.


To balance out pH levels, a pH adjusting automated feed system (or an automatic pH balancer) allows acid to be fed into the water to maintain a reliably consistent set pH range. This will help maintain your facility and components. Balancing pH will decrease corrosion and damage to plumbing and equipment in the factory. Systems can be customized to fit your business’ needs, and have options including multiple chemical feed points, warning lights, low chemical warnings and indicators, flow meters, and volume meters. With programmable pH ranges, you’ll be able to make easy adjustments and control for spills with a chemical containment tank.


If you’re hoping to improve wastewater treatment, reduce chemical usage, reduce associated cost, and therefore increase profitability, constant pH control is a must.

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