What Is a Biodigester Waste System, and How Does It Work?

A biodigester is a type of bio-toilet that operates mostly through decomposition and sedimentation.

The biodigester sewer system is a sewerage treatment system or an on-site sanitation system used in residential and commercial properties.

The biodigester sewer system is used to treat sewer water. The treated water can then be used for home cleaning and low maintenance like watering gardens or soak it underground to recharge the groundwater as is rich in nitrogen.

Biodigester facilitates an aerobic and anaerobic process where all organic matter from the toilet, i.e., urine, faeces, and tissue paper, is 100% biodegraded to solid less water-rich in gases, mainly nitrogen gas.

The human waste decomposes in a digestive tank utilizing certain high-graded bacteria, which then convert to biogas or water.

Because you don’t have to arrange an exhauster clean-up every now and then, this new invention is cost-effective. It requires relatively little maintenance and does not require a sewage system.

The digester’s bio-toilet technology is anaerobic, with degradation occurring via the employment of unique and specialized microbial activities that work at high temperatures to convert it into combustible gas.

What is Septic Tank?

Basically, a septic tank is a large container that lies below the ground and holds all of the dirty water that comes out of your pipes.

This wastewater gets collected into the tank, where it soaks up bacteria and other microorganisms.

How does a septic tank work?

In the septic tank, as wastewater accumulates, a layer of sludge falls to the bottom. Sludge is composed of inorganic solids and the byproducts of bacterial digestion.

A layer of scum floats to the top. Scum is primarily composed of fats, greases, and oils.

The septic tank acts as a settling pond. Greases and oils float to the top. Heavier solids sink to the bottom

Fill the septic tank is often pumped out. It is advisable to use tank pumpers and chemical pumps to clean your septic tank. These two pieces of equipment clean the septic tank by pumping out bacteria during the drainage process

Septic tanks are made up of two primary parts. The shell, or outer container, is made of durable plastic or other materials that are strong enough to hold its shape for many years.

It is important to make sure that this container is completely sealed around its edge to keep out unwanted bacteria and other microorganisms.

The second part is the inner tank, which holds the wastewater from your plumbing fixtures.

This tank is made from a flexible material that can expand as needed to hold all of the water you put into it. It is important to keep this inner tank clean so that your entire system works correctly and efficiently.

How Does a Biodigester Work?

Biodigesters use a digestive process known as anaerobic digestion. The grease interceptor, a biological digester, and a soak pit are the three anaerobic chambers.

The absence of air, as well as the presence of pre-existing bacteria, will begin to eat away at the waste, a process known as anaerobic digestion.

Biodigesters use a digestive process known as anaerobic digestion. The waste is moved through three chambers, with the input being waste, the waste being treated with gas and bacteria, and the output being methane biogas.

There are three anaerobic chambers in the biodigesters: a grease interceptor, a biological digester, and a soak pit.

These three parts treat waste in separate and effective ways, so they do not require cleaning or emptying.

Its methodical organization follows a step-by-step procedure in which trash is eventually separated into grey and black fluids.

First, the waste will enter the first chamber, where all of the household outlets will congregate to dispose of household wastewater.

The solid waste (together with the liquid sewage) will be collected in one location, and after some time, the solid stuff will settle at the tank’s bottom.

Because of the way the biodigester is built, the absence of air and pre-existing bacteria will begin to eat away at the waste, a process known as anaerobic digestion.

Bacteria breakdown organic water as well as all other pathogens in wastewater. When the chamber is full, the water will overflow into the second chamber, where the liquid materials will be treated.

You now have a basic understanding of the first section of the biodigester. From the first chamber, all solid waste, also known as sludge, will be digested and processed.

As the trash from the home continues to accumulate, the water will ultimately approach the breaking point and overflow into the second chamber.

What Are the Benefits of Using a Biodigester?

These are the benefits of the biodigester wastewater treatment method;

  • It digests organic materials in an environmentally friendly manner. Biodigesters, like shipping container houses, are environmentally friendly.
  • It protects groundwater from contamination caused by human waste and untreated water. The water has been treated to eliminate almost 99 percent of germs before it is released into the environment.
  • It provides an alternative to discharging wastewater into rivers, lakes, and fields in rural and semi-rural regions where sewage systems do not exist.
  • The wastewater can be utilized to irrigate plants via irrigation.
  • Because it does not need to be emptied, the effluent is cleaner, more effective, and easier to utilize than a septic tank.
  • In comparison to the end products of today’s septic toilets, the effluent exhumes odorless, non-obnoxious, colorless air.
  • It does not necessitate the time and effort required to relocate composting toilets every year.
  • It does not need any additional wastewater management or treatment.
  • These biodigesters have surpassed the conventional and traditional waste treatment systems. They work in a more efficient and effective manner.
  • Biodigesters require little or no maintenance. They are long-lasting and appropriate for almost any home improvement project.

The Main Advantage of Biodigester on-site Waste Management system

Biodigester Requires no Exhausting

Compared to traditional septic tanks, the biodigester does not need exhausting. This alone makes the biodigester better for dealing with sewer.

The exhausting process is obviously an additional cost, not to mention how messy and potentially hazardous it can be.

A Biodigester is Cost Friendly

The biodigester sewer system is actually cheaper to install compared to the cost of constructing a normal septic tank and the and soak pit.

For Biodigester, one needs to excavate a hole that is 1.1 meters deep and some trenches. The inspection chambers or manholes required are also few.

The biodigester system requires a small space. Traditional septic tanks require a much deeper hole, and that comes with the high costs of excavation.

Excavation is also very tricky and expensive in areas with many rocks, swampy areas, or areas with high water tables and areas with very loose soil.

It also takes a short time to install, with the biggest taking a maximum of 7 days, unlike a septic tank that can take at least a month or even longer depending on the terrain of the place, i.e., rocky, swampy areas are challenging to do a septic tank.

Biodigester is Bad Smell Free

This biodigester on-site waste management system does not emit any bad odor whatsoever.

It’s airtight, being filled with water initially before using guarantees, there is no rotting as happens in the septic, but 100% biodegradation and the process happens under the water.

Septic tanks emit a bad smell because gases are released into the atmosphere and due to rotting.

Biodigester is Safe on the Environment

The bio-digester enhances the environment in many ways, starting with the fact that it does not emit any smell.

The water produced is usually soaked back into the ground and therefore increases the amount of water found underground.

The same water, rich in nitrogen and other nutrients, can also be used for irrigation or watering gardens.

This enhances the fertility of the soil. The French drain should be five meters away from any water source.

Solid Structure and Design of Biodigester

The system is built out of reinforced concrete that is already enzyme, giving it structural strength.

It can easily withstand pressure and stress, making it extremely reliable. The tank is small and cylindrical or rectangular and thus, able to withstand pressure from the soil.

This cylindrical design with a continuous wall ensures that stress is uniformly distributed, unlike rectangular designs where pressure is exerted on corners and joints.

Biodigester Warranty

The on-site sewer system comes with a 3 years post-installation warranty from the manufacturer, which covers the manufacturer’s defects, unlike a septic tank.

However, it does not mean that it stops working after five years; in fact, the longer the time, the effective and efficient the system becomes because of bacteria’s growth.

Biodigester Uses Minimal Space

It uses a quarter of what you could have used to do a septic tank, and since most of the system is underground, it can be used as parking, driveway way, or grass can be planted over it.

Biodigester is Flexible

Since no exhaustion is needed, the system can be installed on all sides of the project; unlike septic, you have to factor in Exhausters’ accessibility.

Biodigester Requires No Power and Maintenance

Our system does not use power since it works on hydraulics, and no maintenance is needed since it is not mechanical, and the enzyme is only dozed once, and the system runs successfully for a lifetime.

Biodigester doesn’t Cause Health Hazard

Unlike a septic tank that spills raw sewer when filled up or leaked into the environment, which might cause water-borne diseases, my system never does that because it does not fill up and don’t emit raw sewer; thus, the best way to go than septic.

Biodigester FAQs

 How does biodigester septic tank design work

The biodigester system uses two principles. One: Biodegradation using anaerobic and aerobic bacteria that are naturally found.

This biodegradation process breaks down organic matter completely or black water into gases and water. Carbon dioxide, biogas, methane, and nitrogen are produced.

The other Principle is displacement. An equal amount of water flushed is the same volume displaced from biodigester to French drain or Soak away pit.

It takes just a few days to breakdown the solid matter to be complete, ensuring that only water is discharged from the Biodigester.

Aerobic and anaerobic bacteria enable this process to take place. The enzyme speeds up the growth of bacteria and speeds up the rate of reaction.

The bacteria Enzyme is put only once and is actually placed on the tank’s inside as it is being manufactured.

The treated water can then be channeled to a soaking area or other places to be recycled for other uses.

Because the biogas produced is not economical, gas escapes into the atmosphere, and the nitrogen produced can dissolve in the water.

This water-rich in nitrogen-rich is well great for watering gardens and irrigation.

What are some Advantages of Biodigesters?

Because of their numerous advantages, biodigesters have increased in popularity. Here are some advantages;

  • There are no offensive odors emanating from the tanks in the toilets: Previously, a stench might be detected in the toilet, especially if the tank was full and hadn’t been emptied.
  • No digester clogging: The methodical approach enables the efficient and effective transfer and treatment of trash.
  • Pathogen reduction: The pathogens will be significantly decreased by the third chamber, allowing the water to be utilized in the soil.
  • Organic matter is reduced since the trash is processed to produce water and gases that may be recycled.
  • No upkeep is required: In comparison to septic tanks, it requires very little upkeep.
  • There is no need to add bacteria or enzymes to break down the waste.

There is no requirement for solid waste removal: Again, because of the low cost, you will not need to call in exhausts

Can I use normal household cleaning chemicals?

All normal products can be used in sensible quantities. Don’t forget that the system works by accelerating the natural sewage degradation process. Some chemicals used are designed to destroy microorganisms.

Therefore, using bleaching or antibacterial cleaners may cause a malfunction in the process.

You should avoid products containing ammonia where the ‘Consent to Discharge’ has a limit for Ammoniac Nitrogen.

Avoid using significant quantities of grease to enter the biodigester system. A grease trap must be installed to the kitchen drainage only when there is a commercial kitchen (Hotels, Pubs, etc.).

The system doesn’t work well with inorganic materials, e.g., condoms, pampers, nylon papers, sanitary pads, etc.

We do recommend alternative ways of managing inorganic waste, e.g., the use of Rentokil Bins.

Can the Biodigester system be on a driveway?

The biodigester is not designed to be installed in a driveway unless you ensure that the loading of traffic is carried by some form of support to take the load away from the structure of the Biodigester.

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