ENVIRONMENTAL DEGRADATION BIOCHEMICAL CYCLE AND ECOSYSTEM CYCLE
MANUEL S. ENVERGA UNIVERSITY FOUNDATION
EXPANDED TERTIARY EDUCATION EQUIVALENCY & ACCREDTATION PROGRAM
(ETEEAP)
COLLEGE OF ENGINEERING
ENVIRONMENTAL ENGINEERING
CEAB3312
ASSIGNMENT NO# 1
ENVIRONMENTAL DEGRADATION, BIOCHEMICAL CYCLE AND ECOSYSTEM CYCLE
MR. DANILO L. AUREADA
Internal Assessor
Instructor XIV
SUBMITTED BY:
MR. GABBY M. SANTAMARIA
ETEEAP-BSIE
Biochemical Cycles
Table of Contents
1. Eutrophication
2. Contributors
Plants such as trees and algae undergo the photosynthesis reaction where carbon dioxide and water in the presence of sunlight are converted to organic materials and oxygen. An important reverse reaction occurs in the water: Fish use metabooilism where oxygen and organic materials - other small fish or algae - as food is converted to carbon dioxide, water, and energy. Bacteria in water, as well as land, also undergo metabolism and use oxygen and decompose organic wastes as food to convert to carbon dioxide, water, and energy. By products in the decomposition of organic waste are nitrates and phosphates. The major natural biochemical cycles include the carbon, nitrogen, and phosphate cycles. They are presented in brief in this graphic.
The overall health of a body of water depends upon whether these factors are in balance. Municipal sewage systems are now doing a better job of removing most of the organic waste products in the discharge water, but some organic waste still enters the streams and lakes. If an excess amount of organic waste is present in the water, the bacteria use all of the available oxygen in the water in an attempt to decompose the organic waste.
The amount of organic waste in water is represent by a chemical test called BOD - Biological Oxygen Demand. The concentration of oxygen is measured in a water sample at the beginning of the test and again after five days. The difference between the oxygen concentrations represents the amount of oxygen consumed by the bacteria in the metabolism of the waste
EXPANDED TERTIARY EDUCATION EQUIVALENCY & ACCREDTATION PROGRAM
(ETEEAP)
COLLEGE OF ENGINEERING
ENVIRONMENTAL ENGINEERING
CEAB3312
ASSIGNMENT NO# 1
ENVIRONMENTAL DEGRADATION, BIOCHEMICAL CYCLE AND ECOSYSTEM CYCLE
MR. DANILO L. AUREADA
Internal Assessor
Instructor XIV
SUBMITTED BY:
MR. GABBY M. SANTAMARIA
ETEEAP-BSIE
Biochemical Cycles
Table of Contents
1. Eutrophication
2. Contributors
Plants such as trees and algae undergo the photosynthesis reaction where carbon dioxide and water in the presence of sunlight are converted to organic materials and oxygen. An important reverse reaction occurs in the water: Fish use metabooilism where oxygen and organic materials - other small fish or algae - as food is converted to carbon dioxide, water, and energy. Bacteria in water, as well as land, also undergo metabolism and use oxygen and decompose organic wastes as food to convert to carbon dioxide, water, and energy. By products in the decomposition of organic waste are nitrates and phosphates. The major natural biochemical cycles include the carbon, nitrogen, and phosphate cycles. They are presented in brief in this graphic.
The overall health of a body of water depends upon whether these factors are in balance. Municipal sewage systems are now doing a better job of removing most of the organic waste products in the discharge water, but some organic waste still enters the streams and lakes. If an excess amount of organic waste is present in the water, the bacteria use all of the available oxygen in the water in an attempt to decompose the organic waste.
The amount of organic waste in water is represent by a chemical test called BOD - Biological Oxygen Demand. The concentration of oxygen is measured in a water sample at the beginning of the test and again after five days. The difference between the oxygen concentrations represents the amount of oxygen consumed by the bacteria in the metabolism of the waste
Links: These include cities, towns, villages and any area that has been wholly constructed by humans. These large communities, strung together, may collectively be referred to as the human ecosystem.