tailieunhanh - ENCYCLOPEDIA OF ENVIRONMENTAL SCIENCE AND ENGINEERING - INSTRUMENTATION: WATER AND WASTEWATER ANALYSIS

Trong quan sát của các vấn đề ô nhiễm của chúng tôi có vẻ là một thái độ tách biệt trên một phần của quan sát con người từ các hồ bị ô nhiễm hoặc dòng. Trong thực tế nước là rất phổ biến trong cuộc sống của chúng tôi, nó là một phần lớn khối lượng cơ thể của chúng tôi và bao quanh chúng ta trong những đám mây, sương mù, mưa, tuyết, các hồ, sông, và đại dương. Chúng ta dường như chấp nhận sự hiện diện của nó mà không cần suy nghĩ nhiều. Tuy nhiên,. | INSTRUMENTATION WATER AND WASTEWATER ANALYSIS INTRODUCTION In the observation of our pollution problems there seems to be an attitude of separation on the part of the human observer from the polluted lake or stream. In reality water is so pervasive in our life it is such a large part of our bodily mass and surrounds us in clouds fog rain snow lakes rivers and oceans. We seem to accept its presence without much thought. However we all are part of the ecosystem and therefore pollution is an intimate condition of our lives not something unconnected to us. Much of the human population appears to have been separated from their ecological heritage and membership. Perhaps this is the reason pollution is so endemic to our world many people had seen pollution as something displaced from their intimate reality. In the last thirty years the threat and cause of damage to ecological and human health from polluting surface and ground water and acid rain and snow as well as air pollution global warming and the destruction of the ozone layer has increasingly occupied our consciousness and our everyday life. The society from young school children to adults reading newspapers and watching television are aware that we are heirs to serious environmental problems. Polls indicate the great extent of this concern. Recently the concerns of various national governments have led to international conferences dealing with the ozone problem and discussion of global warming. Perhaps the convergence of several environmental conditions that threaten to change planet earth s ecological system have awakened the irresponsible amongst the citizenry government administrators scientists and engineers and the industrial establishment to finally realize that we are all part of the ecological system and have a vital interest in the control of pollution. The Clean Water Acts of the . Congress and environmental action of various States and similar actions in Canada have resulted in some improvement in .