Science Investigatory Project

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CHAPTER I
INTRODUCTION

BACKGROUND OF THE STUDY
In our world today, purified water is the one that most of the people drink everyday especially those who live in cities. Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids and gases from contaminated water. The goal is to produce water fit for a specific purpose. Most water is purified for human consumption (drinking water), but water purification may also be designed for a variety of other purposes, including meeting the requirements of medical, pharmacological, chemical and industrial applications. In general the methods used include physical processes such as filtration,sedimentation, and distillation, biological processes such as slow sand filters or biologically active carbon, chemical processes such as flocculation and chlorination and the use of electromagnetic radiation such as ultraviolet light. Nowadays, people who sell purified water sells water expensive. In this study, we would like to propose if using malunggay seeds would purify water.

STATEMENT OF THE PROBLEM
The purpose of the study is to answer the following questions:

1.) What properties that the malunggay seeds produce to help in purifying water? 2.) How many liters of water can the malunggay seeds can purify?

HYPOTHESIS

Negative: The malunggay seeds would have a bad effect which causes contamination on the process of water purification.

Positive: The malunggay seeds would have a good effect on purification, because malunggay seeds contain a anti-microbial substance.

SIGNIFICANCE OF THE STUDY

The significance of this study is for the people to lessen their bills by not wasting a lot of money but instead use malunggay seeds aroung their house. However, the malunggay seed has more effect that expensive machines being used to purify. In addition to that, this malunggay seeds can also be considered as a homemade product.

SCOPE AND LIMITATIONS

The study focuses mainly whether the malunggay seeds have a good effect in water purification. Thus, we will also determine whether this malunggay seeds can also give a bad effect to the water needed to be purified.

REVIEW OF RELATED LITERATURE AND OTHER RELATED STUDIES

WATER PURIFICATION

Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids and gases from contaminated water. The goal is to produce water fit for a specific purpose. Most water is purified for human consumption (drinking water), but water purification may also be designed for a variety of other purposes, including meeting the requirements of medical, pharmacological, chemical and industrial applications. In general the methods used include physical processes such as filtration,sedimentation, and distillation, biological processes such as slow sand filters or biologically active carbon, chemical processes such asflocculation and chlorination and the use of electromagnetic radiation such as ultraviolet light. The purification process of water may reduce the concentration of particulate matter including suspended particles, parasites, bacteria,algae, viruses, fungi; and a range of dissolved and particulate material derived from the surfaces that water may have made contact with after falling as rain. The standards for drinking water quality are typically set by governments or by international standards. These standards will typically set minimum and maximum concentrations of contaminants for the use that is to be made of the water. It is not possible to tell whether water is of an appropriate quality by visual examination. Simple procedures such as boiling or the use of a household activated carbon filter are not sufficient for treating all the possible contaminants that may be present in water from an unknown source. Even natural spring water – considered safe for all practical purposes in the 19th century – must now be tested before determining what...
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