Garbage Disposal for Septic Systems
This page is part of the Garbage Disposal Guide.
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Food waste disposal for septic systems or septic tanks
Can you use a garbage disposal if you have a septic system instead of the regular sewer system? A septic tank is watertight tank that stores domestic sanitary wastewater underground and is most commonly used in areas where there are no connected sewerage systems. If your waste water is stored in a septic tank it isn’t recommended to use a garbage disposal unit. Why is that?
A septic tank isn’t meant for breaking down solid food waste.Recycling.com
Recommended disposal for septic systems
When you are buying a garbage disposal for a home with a septic tank you can’t just buy any disposal. You need to buy one with septic assist which will with the help of a enzyme treatment keep you septic tank healthy. This enzyme treatment comes in a cartridge which can be attached to the septic assist disposal, and just like with printer this cartridge needs to be replaced ever so often.
Best garbage disposal for septic systems
The InSinkErator Evolution Septic Assist is a garbage disposal that is optimized for homes with septic systems. This disposer adds an automatic injection of enzyme-producing microorganisms to the food waste that helps break down the food particles much quicker in your septic tank. This InSinkErator is quiet and powerful thanks to the 3/4 HP motor.
- Feed type: Continuous feed
- Horse power: 3/4 HP
- Speed: 1725 RPM
- Weight: 22.6 pounds
- Warranty: 4-year
Enzyme replacement cartridge for septic disposal.
- The bio-charge enzyme treatment is citrus-scented
- Cartridge lasts 3 to 4 months with average use (4x longer than other treatments)
- The cartridge bottle holds 16oz. of treatment fluid
- You can also buy them in packs of 2 or 4 cartridges
How do septic tanks work?
A septic tank breaks down matter by bacteria. But these bacteria can’t break down solids properly, and food waste is solid waste and if you grind up your food scraps in the garbage disposal you flush the particles into your septic system. These food scraps will form a sludge inside the septic tank which grows in volume because the bacteria can’t break down the solid food waste quickly enough. This means that the rate of accumulation of the sludge is much quicker than the rate of decomposition. Besides, some types of food waste can’t be digested at all, such as coffee grounds, fruit pits, meat bones, and fats.
Wastewater that is flushed down the drain ends up in the drain field of the septic system. There the water will be filtered down by the soil and flow towards the groundwater. The use of a garbage disposal unit can hurt the functionality of the septic system because food scraps can accumulate in the outlets of the drain field. This will stop the drainage of the wastewater towards the groundwater. The whole benefit and functionality of a garbage disposal dissolve because the septic tank is turning in to a food scrap bin, but a very expensive one which.
The food sludge in the septic tank takes up valuable space which normally is meant for waste water. In other words, it reduces the tank’s capacity and efficiency. But it also reduces the bacteria inside the tank which are needed to break down the particles from the waste water. Ultimately, letting a garbage disposal drain into a septic tank will overwhelm the bacteria and with that disrupt the equilibrium in the tank, decreasing or shutting down the effectiveness of the entire tank.
Septic garbage disposals
If you want to use a garbage disposal in combination with a septic system it is recommended to purchase a specially designed food waste disposal. The difference between this and a regular disposer is that a septic garbage disposal breaks down food waste while released special enzymes. These enzymes help with breaking down solid food waste inside the septic tank more quickly.
Does this mean that you can use your garbage disposal just like any other disposal unit, which is connected to a shared sewer system? Unfortunately, not. You always need to be extra careful when disposing of food scraps in the garbage disposal if you have a septic tank. This is because you can only dispose of food waste which really can be broken down well. This means you need to stay away from discarding things like coffee grounds, fruit pits, meat bones, oil and grease to prevent needing extra maintenance and repairs for your septic system. You can also never dispose of objects that aren’t biodegradable at all, like food packaging. But this is applicable to every garbage disposal.
Video about the InSinkErator Evolution Septic Assist
Garbage Disposal Guide
Garbage Disposal Guide
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By Recycling.com/ 5 November 2019