tailieunhanh - Increasing environmental pollution load

The test results are provided at the conclusion of this report. A total of ten composite samples were taken over a four month period. The field measurements were taken on each of the grab samples that where used to make up the composite sample. The field data showed that the system had positive impact on pH and Turbidity. pH was consistently on the alkaline side ranging from to with an average of . In six of the nine tests, pH was reduced an average of to and where readings were on. | Assessment of global megatrends Increasing environmental pollution load An increasingly complex mix of pollutants threatens the Earth s regulatory mechanisms. Particulates nitrogen and ground-level ozone merit particular attention because of their complex and potentially far-reaching effects on ecosystem functioning climate regulation and human health. In addition many other chemical substances are released into the environment with effects in isolation or combined that are still poorly understood. The European environment State and outlook 2010 1 Increasing environmental pollution load Over recent centuries the human impact on the environment has risen steadily as the population grew. The effects on air and drinking water quality were primarily felt locally. In the last few decades we have seen more and more regional impacts . acid rain and many problems already have a global impact . climate change and stratospheric ozone loss . The existing mix of pollutants and their effects in isolation or combined has grown more and more complex with environmental feed-backs becoming apparent at ever-wider scales. The term anthropocene has been suggested to describe our era where human resource use has become a dominant driving force shaping the Earth and its regulating mechanisms Crutzen 2002 . Four environmental pollution subtrends that merit particular attention in view of their complex nature and potentially far-reaching effects are highlighted below. They share most of the same drivers for instance industrialisation globalisation and rising consumption and contribute to the general deterioration of ecosystems and or human health. Particulate matter pollution Apart from emitting greenhouse gases fuel burning for heating industry and transport also leads to pollution of the air with small particles PM10- particles up to 10 micrometer in diameter . Urban haze or rural smoke can ultimately become transcontinental plumes of atmospheric brown clouds. These brown clouds .