Why Is Aqueous Cleaning Better than Using Solvents?

Because parts washers are unseen heroes of the everyday world, doing the task of keeping myriad of parts we never even consider clean, most people don’t stop to think about how those parts washers do their jobs. How does that grease, oil, grime, or otherwise very hard-to-clean contaminants get removed day in and day out? Is that process safe?

Back in the mid-20th century, during the same chemical revolution that also produced wall-to-wall carpet, pharmaceuticals, and plastics, businesses that had to clean parts regularly in order to operate, produce, or manufacture used solvents. Chemicals such as benzene and trichloroethylene worked very efficiently and effectively to remove grease and baked-on contaminants. The problem was that these solvents caused real damage to the people who worked with them and to the geographical areas in which they were used. Many of the Superfund sites that cost the public, the government, and the environment so much money and time to clean were (and are) toxically polluted from solvent exposure. We as a society became aware of the damage these chemicals caused only after the fact.

The long-term effects of solvent exposure on people has been linked to reproductive damage, liver and kidney disease, respiratory issues, cancer, and even brain health and memory. Congress passed legislation like the Clean Air Act, and the EPA began regulating solvent use in the early 1970s, requiring businesses to follow much more stringent emissions and disposal requirements. Much progress has been made restoring polluted land and water and in designing safer chemicals since then. Still, solvents are widely used today in many industries and manufacturing sectors. You’re familiar with the smell of some of them, including that new car smell. Yes, that’s the smell a toxic mixture of solvents and other volatile organic compounds (VOCs) produces.

Volatile organic compounds aren’t just bad for indoor environments. They evaporate and react with other pollutants in outdoor air to produce ozone, and increased ozone is bad for health too. It causes headaches, eye, nose, and throat irritation, exacerbates respiratory problems like asthma, and has even been linked to cancer. Because of this, many state governments continue to pass legislation further limiting the use of VOCs.

Companies still need clean parts, however, regulations or not. As a result, aqueous washers have proliferated as the safer and more economical alternative to using traditional solvents. Aqueous washers use water instead of chemical solvents in tandem with other mechanical or chemical methods in order to clean parts to specification. This can be challenging, but the results are safer and even more economical in the long term. It’s important to remember that, while aqueous cleaning is a more environmentally safe way to clean, proper disposal of all cleaning solutions should always be done.

AEC Systems designs our industrial parts washers to utilize water and heat, pressure, agitation, and other engineering solutions to remove dirt, grease, oil, and swarf effectively and safely, minimizing expensive waste removal costs. We can design a parts washer to clean any part, no matter how large, small, or complex. If you have a unique cleaning challenge, call us today. We would love to discuss how we can solve your problem together.

 

 

 

 

 

 

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