Two Certified Home Inspectors on every Orillia, Gravenhurst, Bracebridge and Muskoka inspection. 705 205 4663  We reduce wait times on site for busy clients while ensuring a through inspection.  Older home inspector white bearded with glases doing home inspection in Muskoka, Barrie, Orillia,Gravenhurst, Bracebridge, Midland, Port Carling,, Bala, Coldwater  and nearby areas.Muskoka home inspector checking log home roof Two Certified Home Inspectors on every Orillia, Gravenhurst, Bracebridge and Muskoka inspection. 705 205 4663  We reduce wait times on site for busy clients while ensuring a through inspection.  Newer home inspector doing home inspection in Muskoka, Barrie Orillia,Gravenhurst, Bracebridge, Midland, Port Carling,, Bala, Coldwater  and nearby areas.Christopher the newest member of the team at done right home inspections is a certified professional Inspector. He has over ten years of building from the foundation up as well as a great deal of roofing experience. Christopher is familiar with home cottage and commercial building and renovation and has for sever years assisted Bruce in the home inspection business.
 Bruce Grant   CMI ®                                                            Chris Grant  CPI
Two Certified Master Inspectors on each Inspection !

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A Certified Master Inspector's blog on items of intrest to home buyers

Bio filter, peat bed, standard septic systems, what's the difference?

Bio filter, peat bed, regular septic ? what is the difference?

  Like most septic waste systems the treatment begins with a large tank, usually  divided into 2 sections. with a divider called the center baffle which can go from top to two thirds down the depth of the tank or it may have a full height baffle with one large hole in the middle or several smaller holes in a ring . These holes allow water to pass through the baffle  while solids float and sludge sinks to the bottom. 

Muskoka home inspection shows main septic tank found on standard systems

  Residental septic waste treatment begins with septic bacteria colonizing the solids, as they digest waste materials the resulting broken up waste including nutrients from the bacteria's digestive process sink to the bottom forming a sludge layer.  With every shower, sink full of dishes, or toilet flush, water entering the tank pushes a similar amount of the clear layer through the opening in the center baffle and thus out the  tank outlet.

Orillia home inspection drawing of septic system drainfield home with pipe to trenched in pipe rows.

  The leachfield of a standard septic system would distribute the liquid effluent ( waste water) out a distributing network of pipes in a leachfield ( drain field ). While the leachfield may be trenched in or built up in a mound, final filtering takes place as the liquid filters through the filter sand around the pipe until the liquid reaches  the ground water level.

The secondary stage treatment difference

  A biofilter type system, Peat bed type, or any number of other patented media type systems all feature  additional treatment areas after the tank to process waste nutrients and further remove them before they can enter the sand material in the leachfield.

Huntsville home inspection revals Secondary type septic system a second filter bed which enhances filtering and removes more nutreients

   For example Waterloo Biofilter Flat Bed systems have the treatment unit or septic tank for first stage waste processing  but instead of leaving the tank for the leachfield the effluent enters a pump tank which is on a float switch that pumps effluent to a secondary treatment unit ie. the flat bed unit. These  units are  constructed of fibreglass shells that will contain patented Biofilter filter media. ( special foam blocks) This media is extremely porous and each block has thousands of small surfaces for bacteria that eats nutrient waste elements to colonize.  When the waste reaches the bottom of the media it passes into the same type filter sand as the standard septic system leachfield.

It is nearly clean water now

  This secondary stage process allows for a much cleaner effluent entering the soil, in fact it looks almost perfectly clear by then. Importantly it has also geratly reduced harmful nutrients like nitrogen that can adversly impact our rivers and lakes. It also allows for a much more compact leachfield area as long trenches or large mounds are no longer necessary.

Is there another difference?

  Unlike a conventional septic system, which once installed is seldom thought of till the time to pump the tank rolls around every three years or so, maintenance of Waterloo Biofilter treatment systems, like all secondary treatment systems  is a requirement specified in the Ontario Building Code for residential systems.  A service contract with the manufacturer or service representative must be on file and updated yearly with the municipality the system is located in.  Regulations in most other areas of North America are similar.

 Bruce Grant
 Certified Master Inspector

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