Mika-Bakt in English





Description of the Swedish patent for the product Mika-Bakt

and the reason for inventing it.




The patented product is marketed in a variety of compositions for different use under the following Brands




Mika-Bakt is used for sewer systems, pump stations and septic tanks and similar installations




Technical area


The product Mika-Bakt (AV-Bakt, Scent-Stop) is a biological composition including the yeast Yarrowia lipolytica and a bacteria from the breed Bacillus, an isolated bacterial breed of Bacillus subtilis (NCIMB 41118), plus a procedure for

maintenance of sewage pump and pipe-systems and various installations of waste water systems such as septic tanks and similar.




Technical background

Blockage of pipes, especially sewage pipes is a huge problem

that usually is gradually built up inside pipes of material that’s not decomposed in waste water, especially carbohydrates proteins and fat.

Such depositions is built up of material that flows throw the pipes. When a certain amount of sediment has been built up in the pipes the flow is significantly reduced or totally stopped. The commonly used method to remove such sediments in pipes is to use mechanical tools that cuts away the sediment with a kind of rotating knives.

This method is time and workload consuming which means it’s costly. Sometimes it’s impossible to reach all parts of a pipe system due to bends, valves and similar. That can mean that you have to disassemble the pipe system or even replace more or less of it with new pipes.

Another method to remove sediment in pipe systems is to use very corrosive chemicals such as concentrated sodium-hydroxide, acids and stuff including chloride in high concentrations. These chemicals have shown to be rather ineffective. Other disadvantages is that they are dangerously toxic to handle and have a very negative impact on the environment. Strong chemicals can also significantly reduce the life length of the pipes in a sewage system.

The use of bioremediation, which is adding microorganisms and enzymes in order to get a more complete treatment of the sewage water. This is the only way to get a process that is not harmful to the environment and is accepted by the environmental authorities. Using toxic chemicals have been more or less banned by regulations of authorities due to the environmental harm and pollution.





Summary of the invention Mika-Bakt


The purpose of the invention is to achieve continuously clean pipes/pipe-systems by the use of a composition of water and the microorganism Yarrowia lipolytica and Bacillus subtilis and a nonjonactive detergent.

By the use of the invention a procedure for maintenance of sewage pipe systems and septic tanks are followed.

The invention also includes an isolated bacteria brand of Bacillus subtilis (NCIMB 41118).





In-depth description of the invention Mika-Bakt


The biological composition according to the invention includes two types of environmentally friendly microorganisms and three types of hydrolytic enzymes, preferred to be dissolved in water with a natural polymer.

The composition accelerates the deterioration of organic waste such as fat, oil emulsions, starches, proteins, cellulose (paper) and significantly reducing concentrations of bad smell.

The composition due to the invention is a concentrate that shall be diluted before used.


The invention includes a procedure for maintenance of sewage pipe systems and septic tanks. The term “sewage pipe systems”

is here used to describe sewage pipe systems including pump stations and similar installations.

The term “maintenance” is used in the meaning of using the composition in order to remove sediment and waste from the pipe systems and keep them free as well as preventing fat to build up within the pipes and other places in the system. Which also means that manual cleaning procedures are no longer necessary.


The microorganism in the composition according to the invention will establish itself in the pipe systems and prevent further build-up of organic waste in the sewage pipe systems.

Hence significantly reduce the amount of man hours spent in manually clean the pipe-/pump-systems and thereby save money.


Normally it takes at least a day for two men to manually clean a clogged pump station. To clean a pipe systems can be a project that lasts significantly longer.

Without the treatment with the composition described above is the bad smell almost unbearable and can even be fatal for your health.





Practical advises


In the process of maintaining sewage pipe systems the composition is diluted as the instructions from the provider (normally 1 part composition to 24 parts water)

The composition is thereafter distributed to the pipe system preferably with an electronic dosing pump controlled by a timer. The timer can be configured to give continues flow or periodic dosing, based on the amount and type of waste.

If a pipe system is totally clogged the composition is allowed to be in contact with the clogged part of the system for a long time period.


In case the pump station is connected to a SCADA system, for optimal dosage, let the SCADA system control the dosage

With a SCADA system it’s possible to control the dosage to the point when the pump stops, low level in the pump basin, and using the buffering capacity in the pump basin to get maximum time for contact with the composition to get established.

In the above described installation the invented composition is used to accelerate the decomposing of organic sediment in the waste water.


The invention is also useful in maintenance of septic tanks. Here the term “septic tank” refers to toilets and waste water from house holds and summer houses that's not connected to a waste water treatment facility. Also, large ships and other similar installations with closed waste water handling systems can benefit with use of the composition. The term maintenance is here used to describe the capability of the composition to significantly decompose excrements and cellulose (paper) to a fluid almost totally free from smell. The fluids consist only of components that’s totally harmless for the environment. No further treatment of the existing fluid is necessary. The fluid can actually be returned to nature.




Mikab & Limtek AB

Fraktgatan 5

254 64 Helsingborg

Orgnr: 55653-0918

Telefon: 042-156000

E-post: lars(a)mikab-limtek.se