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Exploration & Study to Technology of Energy Saving and Emission Reduction in Iron & Steel Enterprise

Author: JiGang
Tutor: JieYue；ZhaoYueXu
School: Xi'an University of Architecture and Technology
Course: Environmental Engineering
Keywords: Iron and steel enterprises Water resources Recycling Conservation and waste reduction technology Zero emissions of industrial waste water
CLC: F205
Type: Master's thesis
Year: 2010
Downloads: 242
Quote: 1
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Abstract

Water is necessary for human life and social production, irreplaceable natural resources; conditions of water resources directly affects the economic and social development and people's living standards improve, the per capita water effectively improve the well-off goal difficulty; water resources that affect China basis for sustainable development, global strategic issues. Water shortages and water pollution is still a major constraint for the future development of the iron and steel industry. The face of unprecedented water-saving situation in the steel industry, based on advances in technology, increase the integrated water resource recycling, and the key to the iron and steel enterprises to enhance sustainable development capacity. Large-scale drought in the southwest region, not only for China's water resources pose some challenges, but also brought new challenges to water conservation work. At present, China's iron and steel enterprises in discharged waste amount than in the past has been the great reduction, but emissions are still relatively large, is not only a waste of water resources, but also to pay a lot of sewage charges, some impact on the surrounding water environment. This social enterprise are detrimental to minimize the discharged waste from the iron and steel enterprises in China's own development considerations, only in order to achieve sustainable development of enterprises. In recent years, TISCO has been committed to comprehensively implement the scientific concept of development, vigorously implement the circular economy, improve water recycling rate, reduce the consumption of fresh water, wastewater resource optimization for drainage patterns, implementation of the quality of water supply, quality drainage. sub-quality treatment, water balance and other technical measures, the new water consumption per ton steel dropped substantially, and provides a reliable protection of water resources for the sustainable development of enterprises. In this paper, the study of advanced iron and steel enterprises in water-saving aspects of advanced experience and technology, combined with of TISCO surrounding water environment quality status, TISCO use of water resources and their own conditions, and actively explore the \The innovation of this paper is to: (1) the use of water resources for the iron and steel industry in China the status quo, give some suggestions; (2) for the TISCO wastewater particularity of water quality and quantity, the pre-processing unit membrane processing unit concentration crystallization unit technology program. Combined with the TMF membrane module, and traditional lime softening water treatment technology to remove water hardness and heavy metals, lime soda ash softening and mechanical stirring clarifier concentration and separation to remove calcium and magnesium hardness of 80 to 85% and 95%, heavy metals and concentrated water reverse osmosis threats organic compounds. The brine treated after dosing lime soda ash TMF unit and sodium bed softening unit re-entering the brine reverse osmosis unit. The last remaining the brine evaporation crystallization process, resulting in condensate and miscellaneous salt, condensation water recycling, as deicing salt crystallization Miscellaneous salt bags or for other uses, and ultimately achieve \

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