The sewage treatment industry development
Earth although 70.8% of the area is covered with water, but fresh water resources is extremely limited, the human really able to use is part of the rivers and lakes, and groundwater, accounts for only 0.26% of the earth's total water, and distribution.
Increased sharply since the 1950 s, the world's population, industrial development is rapid. Global water situation to deteriorate rapidly, "water crisis" has become increasingly serious. On the one hand, human demand for water resources expanding at an alarming rate; On the other hand, the increasingly serious water pollution, eating into a large number of water resources available for consumption.
Every day all over the world, about 200 tons of rubbish into the rivers, lakes and streams, each will waste water pollution 8 litres water; All rivers flowing through the Asian cities are polluted; The 40% of the water resource is processed food waste, metals, fertilizer and pesticide pollution; Article 55 river in Europe only five poor water quality. In the 20th century, the world's population has doubled, while human water increased five times. Many countries in the world is facing a water crisis: 1.2 billion people water, 3 billion people lack water sanitation.
China's water resources per capita is less, the space distribution imbalance. With the acceleration of China's urbanization, industrialization, water demand gap is growing. In such a background, the sewage treatment industry become a new industry, at present, and tap water production, water supply, drainage, water reuse industry in the equally important position.
Though because of state and government at all levels of the importance of environmental protection, sewage treatment industry in China is growing rapidly, sewage volume increased year by year, urban wastewater treatment rate to improve. But at present sewage treatment industry in China is still in the early stages of development.
On the one hand, China's current sewage treatment capacity is still can't keep up with rapid expansion of the scale, water pipe network, such as sludge treatment facilities construction lags behind. On the other hand, China's sewage treatment compared with the developed countries, there are obvious difference, and low load rate of the facilities.
So China should improve the sewage treatment of policies and regulations, establish a supervision system, create a reasonable system of sewage treatment fee, foster domestic environmental protection industry development, promote the industrialization and marketization of the sewage treatment industry. Sewage treatment industry is a sunrise industry, promising prospects. China will invest 300 billion yuan during the period of "11th five-year plan" to promote the city sewage treatment and utilization of sewage treatment industry in China in high-speed development period.