If foam is not monitored and kept at bay it can cause issues like inaccurate level indicators in tanks or the foam can grow so much that it escapes the tank, causing unsafe and slippery conditions. There are also different types of foam, it can be fluffy white foam that blows across the parking lot or dark dense foam that billows out of the manhole like a mushroom grown wild and it can also be somewhere in between the two. The trick to successfully treating foam is to figure out how the foam was generated.
Here are four of the most common reasons foam is generated:
- Mechanical motion in the water, such as aeration or mixers turning at high speed – We have all seen this one in action. Tanks
usually have a light fine foam that is generated by air. This is normal, and if it stays light and dissipates, there is nothing to worry about.
- Heavy solids in the water – When the “solids-load” in your tank is too high, you get a dense dark foam, as pictured on the right. This is serious and indicates a treatment issue that needs to be addressed. Once the solids load is decreased, the foam usually stops.
- Surfactants in water – Surfactants, a common ingredient in cleaners, can cause foam. There are two options to treat this type of foam. Option one is simple, replace the cleaner with a non-surfactant cleaner. This is not always an option due to cleaners being spec’d in or a resistance to change the current process. If you cannot stop the surfactant upstream, you must apply either a foam dispersion or anti-foam agent. These are commonly called defoamers.
Sharing all of our technical expertise in one place.
The Hubbard-Hall sales and technical teams travel to multiple tradeshows and conferences every year, bringing our surface finishing and wastewater expertise to as wide an audience as possible.
With a portfolio of over 2,400 customers ranging from Fortune 100 OEMs to boutique metal finishers, our team is in the perfect position to learn and absorb all the latest process improvements, industry knowledge and chemical advancements.
We have gathered a selection of our top 2016 surface finishing and wastewater presentations below, simply click on the links to view the full presentation:
We put these two common wastewater options to the test to see where their strengths and weaknesses lie.
When selecting products for their wastewater treatment (WWT) needs, manufacturers must select between commodity wastewater treatment chemicals and specialty chemicals. A closer examination of their respective strengths and weakness will help illustrate what each has to offer.
Commodity Wastewater Treatment Review
Commodity wastewater chemistry traditionally involves products like lime and calcium chloride. While the price per pound may be less expensive, using basic commodity chemistry may not be the best or most cost effective option. This option requires the addition of single components or bags which take significant time to add, labor to move them around and bring them up to the Equalization (EQ) tank, and use of a higher dosage of chemicals. Commodity chemicals also produce a significantly higher amount of sludge that must be hauled off-site.
That Summer Heat Brings Odor Issues
Controlling odor is one of the most challenging aspects of industrial and municipal wastewater treatment. This challenge is heightened during the hot summer months. The first step in fixing the problem is identifying where the odor is coming from. Here are a few places we recommend you start your search for that odor:
- Rinse Tanks
- Air Scrubbers
- Pump Stations
- Evaporator System
- Sewer Lines
- Grease Traps
- Equalization Tanks
Found the Source, What Next?
Our on-site House Calls provide you with the service and know-how to keep your WWT system running at peak efficiency.
Much like the human body, an industrial wastewater treatment (WWT) system requires maintenance and care to remain healthy. Also like the human body, maintaining peak performance requires both exact chemistry and recommendations provided by a skilled professional you can rely on. This is where an AquaPure House Call comes into play. Hubbard-Hall acts as the on-call physician for the continued health of our clients’ WWT systems, providing on-site house calls to give system evaluations, process optimization, and operator training. 515 on-site wastewater house calls in 2015 reduced production shut downs, slowdowns, and bottlenecks for AquaPure users.