| The water resource is one of the important resources of national economic development .The shortage of water resource will be a common problem faced in the world in the 21st century . With the rapid development of the economy of our country ,the status of water resource consumption and water pollution is getting serious day by day . It has destroyed the human ecological environment,limited and influenced the sustainable development of national economy .So ,promoting the research of comprehensive administration of wastewater and improving the utilization ratio of the water resource will have great values of social effect.The steel industry belongs to high water consuming industries .Blast furnace gas washing wastewater is one of the main industrial sewage of an iron and steel enterprise .It is characteristic of great output ,high temperature and high turbidity .Advancing the treatment ,control and recycling researches of gas washing wastewater in iron and steel enterprise will have a very important value for improvement of effective development and utilization of the water resource and reducing fresh water consumption .Meanwhile ,it will also have a very important role to enhance the safe and high-efficient production of blast furnaces.The objective of the present research is to seek for a economic and high-efficient flocculent method to treatment blast furnace gas washing wastewater so as to improve water quality and dehydration property of filtered sludge .It will be protect the industrial ecological environment of the iron and steel enterprise and improve the utilization ratio of water resource .Considering the characteristics of blast furnace gas washing wastewater and in...
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