COMPARATIVE STUDIES OF THE PERFORMANCE OF FILTER MEDIA USING ACTIVATED CARBON IN REMEDIATION

CHAPTER ONE

INTRODUCTION

1.1 Background of the study

With the continuous annual increase in the world population (lowest increase being 1.1%) there is need to manage our natural resources. Water, which is one of these basic resources for human survival and socioeconomic development, needs to be managed efficiently. The United Nations has estimated that the use of water has increased six fold in the 20th century and that by the year 2025, about 1.8 billion people will have absolute water scarcity conditions (with an annual water supply of less than 500m3 per capita) and also that two third (2/3) of the world population will live under water stress (with an annual water supply of less than 1700m3 per capita) (U.N-Water Report, 2006). This population increase will have adverse effects on developing countries where 82% of the world live and experience water scarcity (Dalahmeh, 2013). There is therefore need to properly manage and utilize existing water resources especially in the developing countries.

1.2 Statement of the research Problem

Greywater, which accounts for approximately 50-80% of total household wastewater mostly ends up in receiving water bodies (Li et al., 2009). The provision of inadequate sanitation and wastewater disposal facilities leads to environmental and public health problems which is responsible for 1.8 million deaths annually (Corcoran et al., 2010; WHO Report, 2009). Although centralized wastewater systems are common in industrialized countries, they are complex and expensive to construct and operat

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Updated: 23rd May 2019 — 12:52 pm