What is the problem?

What is the problem?

Problems in Water Distribution Network System

▶ Forming biofilm inside

A biofilm is a surface deposit of bacteria, other microorganisms, and organic and inorganic materials that accumulate within a slime layer. Biofilms can form on solid and liquid surfaces when nutrients and water are present.
Public health concerns related to biofilms in distribution system include the documented presence of primary and opportunistic bacteria, viruses, protozoa, and fungi.
The multiplication of micro-organisms in biofilms along the distribution systems results in : The deterioration of the water quality in the distribution systems
1. The development of odor or color
2. The acceleration of corrosion within the pipelines (bio-corrosion process)
3. Increased disinfectant demand
– Water Pipe Suppressing the Forming of Biofilm is Required
– Clean Water Pipe is the First Priority to make Tap-Water Drinkable.

▶ A Biofilm is ……

A biofilm is a surface deposit of bacteria, other microorganisms, and organic and inorganic materials that accumulate within a slime layer. Biofilms can form on solid and liquid surfaces when nutrients and water are present.
Much like plaque that forms on teeth, biofilms form inside the distribution systems of drinking water and can sometimes cause a number of problems.

▶ Problems Associated with Biofilms in water pipe

Just as all teeth have some plaque, all distribution systems come to retain some biofilm, in both cases, problems can occur when they are not controlled.
Public health concerns related to biofilms in distribution system include the documented presence of primary and opportunistic bacteria, viruses, protozoa, and fungi.
Although primary pathogens (those that can cause disease to healthy people) have been detected in biofilms, there is little information on the outbreaks of waterborne disease that are conclusively linked to biofilms.
(Biofilm Control in Distribution Systems, by Craig Mains, NESC Enginnering Scientist/ www.nese,wvu.edu/techbrief.cfm)

The multiplication of micro-organisms in biofilms along the distribution systems results in:The deterioration of the water quality in the distribution systems.
1. The development of odor or color
2. The acceleration of corrosion within the pipelines (bio-corrosion process)
3. Increased disinfectant demand

Although the advanced treatment process has been introduced in the water treatment plant to provide good quality tap water, the water treatment tap water is contaminated by the corrosion of the pipe during the process of supplying to the home through the pipe, the cross connection of the old pipe or pipe Water contamination by wastewater, pathogenic microorganisms, and microorganisms adhering to the surface of the tubes may cause secondary pollution.
(Journal of Korean Society of Water and Wastewater Vol. 26, No. 6, pp. 767-777)

Deposits such as iron, aluminum, manganese, copper, and zinc were detected in the tap water, and the biofilm of the water pipe was observed to be attached mainly to the sediment in the tube as a bag type, liver type, and spherical type bacteria.
In view of the fact that many biofilms are formed along with corrosion in the case of water pipes in Korea, bacteria are introduced into tap water and the average temperature of tap water is 17 ° C. In view of the fact that biofilm is easily generated, it is urgent to establish a comprehensive and fundamental alternative to biofilm formation in pipelines in management.
(Professor Kim Young-Kwan, Department of Environmental Engineering, Kangwon National University / Environmental Media 2004)

Water Pipe Suppressing the Forming of Biofilm is Required
Clean Water Pipe is the First Priority to make Tap-Water Drinkable

▶ New Concept on Tap-Water for Drinking Water : Our Solution

Problems in tap water supply resulting from biofilm formation are well known.
Factors that can inhibit biofilm formation are known as well, but most of them are difficult to realize because of excessive cost or technical problems to inhibit biofilm formation.
We have pointed out that the method through the modification of the pipe material is the most effective and economical.
This new pipe contains a safe but stable material, which based upon the nano-biotechnology. This material TerraSAN is not harmful to human body and does not dissolve in water. It can inhibit strongly microorganisms to attached on the surface, so thus making biofilm formation difficult.

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