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What is Combined Treatment and Dispersal?

Posted on by Kevin Moreau

Is it possible to attain a high level of treatment and disperse wastewater within the same footprint? The use of combined treatment and dispersal (CTD) solutions enables you to do this in applications as small as single-family residential homes to larger commercial treatment systems.  

Combined treatment and dispersal (CTD) systems are non-mechanical, non-biodegradable, low long-term life cycle cost systems for residential, commercial, and community onsite wastewater treatment system designs. CTD systems consist of two main components; the proprietary media and the specified system sand.

  • The proprietary media is your pipe, it helps distribute effluent throughout the system footprint and provides initial filtering and treatment.
  • The specified system sand (ASTM C-33), provides time and travel through an oxygen rich environment, this is where the majority of the treatment occurs.

Here is some additional information on the CTD products that Infiltrator manufactures 

Advanced Enviro-Septic (AES)

The Advanced Enviro-Septic® (AES) Treatment System has been proven to remove up to 99% of wastewater contaminants without using any electricity or replacement media.  

  • NSF/ANSI 40 Certified 
  • BNQ Certified for Secondary and Advanced Secondary Treatment 
  • Effectively filters out even more suspended solids 
  • No mechanical devices, replacement media, or additives  
  • Simple and easy to maintain 

Learn More About AES

AES Case Studies

AES Videos

Advanced Treatment Leachfield (ATL) 

  • Produces Class 1 (EPA secondary) treated effluent 
  • A passive advanced leachfield treatment – no moving parts or power required  
  • Quick and easy to install 
  • Shallow system maximizes site suitability and reduces the amount of sand fill required 
  • No venting or sand cover requirements 

Learn More About ATL

ATL Case Studies

ATL Videos

Both AES and ATL have been installed in residential and commercial applications throughout the United States and Canada.  

About the Author

Kevin Moreau, Environmental Engineer 

Kevin joined Infiltrator Water Technologies in 2021 as an Environmental Engineer after graduating with his B.S. in Civil Engineering from Western New England University. Prior to joining Infiltrator Kevin worked with a surveying crew allowing him to gain experience on septic system installation sites. Today he works with engineers and installers to design and draft residential and commercial septic systems and provide technical support.