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Abstract
This project has an objective to solve the water problem having foul

smell and quality Not suitable to water the plants by Water filtration and oxygen
addition to water.

We start the project by exploring the problems. Then, we find
information on how waste water happens and how to fix it. We choose to solve the
problem by using water filtration and adding oxygen to water. We choose to do this

project at the area of Lam Kradong near the bridge side of kindergarten. The water at the
bridge side is already used. So we bring the water beside the kindergarten bridge to be

reused to water the plants around the school. We collect data with the following water
measurements: oxygen, pH and clear turbidity. We measure the results before and after

the invention starts working. We compare the results of 2 tests to conclude if the
invention can be used or not.

The correction process to the project is to modify production in the
filter tank. Because mixing two filters in the tank cannot sufficiently purify water. There
are residuals from the filters leaked into the water causing unclear water. The water

should be left in tank for longer period in order to increase oxygen level.
The results of this project find that the project is successful in

increasing oxygen level in the water as the oxygen level in the water increase from value
of 1 to value of 3.5. However, the project cannot achieve the objective of filtering the

water as the quality of the filtered water is unchanged.
In conclusion, our invention can increase oxygen level in the water

but cannot purify the water. But the processed water can be used to water plants.
Because it is not required to use clear water to water the plants. The water to be
released into the Lam Kradong near the school is from higher ground will have added

oxygen before using in watering the plants.