Environmental Control and Pollution in Nigeria - 6978 Words

INTRODUCTION Civilization has been overwhelmed with fearful reports that mankind is steadily working towards self – destruction through the process of uncontrolled pollution of the environment. A casual look at our surroundings shows reckless attitude of people towards environmental preservation. Due to this development, regulations and standards have been set to ensure cleaner and safer environment. These regulations are enforced by agencies like National Environmental Standard and Regulation Enforcement Agency (NESREA), Federal Environmental Protection Agency (FEPA) and State Environmental Protection Agencies (SEPAs). There are environment regulations currently in place which include regulation on noise, erosion, flood, for†¦show more content†¦They impart a high Biological Oxygen Demand (BOD) load to the liquid waste. These organic compounds are readily degraded in aqueous medium by soil and microorganisms present in the sewage. During this process, Dissolved Oxygen (DO) in the stream is used up. When the DO is reduced below a certain limit, aquatic life is affected adversely. Oil spillage from tankers and ships leads to the pollution of beaches. Some wastes from pharmaceutical and petrochemical industries and coke-ovens contain phenols which are toxic to fish, microorganisms and other aquatic life. Liquid effluents from industries manufacturing drugs, dyestuffs, pesticides and detergents can also be toxic. Usage of anionic detergents which are not biodegradable leads to a lot of foaming and frothing. ï‚ ·Ã¯â‚¬  Inorganic pollutants and heavy metal pollution Alkalis, acids, inorganic salts and other chemicals formed during processing lead to inorganic pollution. Besides being the cause of corrosion of metals, these chemicals are toxic to aquatic life. Industries like paper and pulp, tanneries, textiles and coke-ovens among many others, discharge these chemicals. Inorganic chemicals such as free chlorine, ammonia, hydrogen sulfide and other sulfides, salts of metals like Cr, Ni, Zn, Cd, Cu, Ag etc. are usually found in metal plating liquid wastes, alkaliShow MoreRelatedEssay On Air Pollution847 Words   |  4 Pagesthis unit, I understand that air pollution transpires in various patterns, however, it can generally be thought of as gaseous and particulate contaminants that are existing in the earth’s atmosphere. Chemicals discharged into the air that has a direct impact on the environment are called primary pollutants. These primary pollutants sometimes react with other chemicals in the air to produce secondary pollutants. 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