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Abstract. Water is one of the important components that support human life. With an increase of population, there is also
an increase in water consumption. In addition, improved living standards and industrial activities require improved water
quality standards. However, the increase in demand is in contrast to the availability of existing water sources, and the
surface water of existing rivers is strongly influenced by the tides. The flavor of surface water during the dry season is
sometimes very salty. Water is not only salty but also has higher turbidity than the standard water quality. The use of
rainwater as a second alternative is very limited, which could only be acquired in rainy season. To overcome chronic
problems, such as lack of clean water supply, one requires appropriate water treatment technology. An appropriate water
treatment system is a combination of conventional and advanced technology. Desalination, such as household scale
Reverse Osmosis (RO) membrane technology has been developed to address the problem of raw and clean water
availability. RO membrane technology is a water treatment by molecular filtration using a primary membrane such as
reverse osmosis pressure, and one of the materials that can be utilized for the upside osmosis the coconut trunk. Coconut
trunk has a fiber that serves as a filter whose mechanism of action is very similar to reverse osmosis. Therefore it can be
said that coconut trunks can be used as an alternative to water treatment by reverse osmosis membrane method to obtaian
clean raw water. The water quality of the filtration product with the coconut rod is temperature, the degree of acidity,
dissolved oxygen, and dissolved soil which are still within the standard range of clean water. However, the electrical
conductivity is still below the maximum limit of the standard water class for agriculture. Filtration with vertical fibers
can reduce turbidity by 157.1 NTU. However, it is not effective to use these coconut filters for river with low-turbidity.
Only the water in Barito River and Kemuning Banjarbaru meet the class of clean water class A of 5 NTU, two other
rivers have decreased turbidity after going through filtration process, but the value is still > 5 NTU. |
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