Economic Growth and environmental problems
The industrial revolution, which began around 1750, ushered human beings into a new era of modern civilization. While the remarkable progress in science and technology has improved people's lives greatly, our earth is changing and the environment around us is becoming worse and worse. According to Booth (1991, p.552), the" long-run economic growth relies on the creation of new industries and new forms of economic activity, these new forms of economic activity create new kinds of environmental problems". Focusing on these aspects, the economic growth will bring about serious environmental problems such as water pollution, air pollution, ozone depletion, and acid rain.
One of environmental problems is water pollution that is caused by economic growth and is very widespread and serious in the world. Industrial wastewater is one of the water pollution that people are focusing on nowadays. As we know, with economic growth, there must be setting up more industrial factories in order to satisfy people's needs.
On the other hand, more or less, these industrial factories will drain off wastewater; as we know, these wastewater contain many toxic and harmful chemical substances, such as, SO2, NO, waste gases and some other aromatic compounds. Therefore, we can see that the rapid growth of the urban industry and the high speed of economic development caused a great deal of effect on water pollution especially on industrial wastewater.
In addition, with the rapid economic growth, some out of date used water supply systems in developing countries can result in water pollution, especially in the populous mega-cities. The population in developing country mega-cities is increasing so fast that the piped water supply and sewer systems cannot follow the needs of the increasing population. Many sewer networks in developing countries still stay at the standard of colonial period.