Environmental Impact Assessment and Environmental Management Plan for a Steel Project...

Environmental Impact Assessment and Environmental Management Plan for a Steel Project The environment clearance (EC) process for a steel project (Fig 1) has the following built in steps. These steps are (i) screening, (ii) scoping and consideration of alternatives, (iii) baseline data collection, (iv) impact prediction, (v) assessment of alternatives, description of mitigation measures and environmental impact statement, (vi) public hearing, (vii) environment management plan, (viii) decision making, (ix) monitoring of the clearance conditions. Fig 1 Process for obtaining environment clearance for a steel project The environmental impact assessment (EIA) and environmental management plan (EMP) is part of EC process. EIA and EMP is normally necessary for obtaining EC for (i) those projects which can significantly alter the landscape, land use pattern and lead to concentration of working and service population, (ii) those projects which need upstream development activity like assured supply of mineral products supply or downstream industrial process development, (iii) those projects which involve manufacture, handling and use of hazardous materials, and (iv) those projects which are located near ecologically sensitive areas, urban centres, hill resorts, and places of scientific and religious importance. For obtaining EC for the steel project, it is essential that a report covering the EIA and EMP) is submitted to the regulatory authorities. This report assists the process of decision making with regards to the EC for the project. In addition to getting EC for the project, the purpose of the EIA and EMP report is to take into account the environmental aspects of the project not only during its implementation but also after its commissioning. The purpose of EIA is to identify and evaluate the potential impacts (beneficial and adverse) of the steel project on the environmental system. It is a useful tool for decision making based...

Environmental Performance of Iron and Steel Plant...

Environmental Performance of Iron and Steel Plant Environmental concerns associated with various processes of the iron and steel plant relate to mainly (i) atmospheric emissions, (ii) waste water and liquid effluents discharges, and (iii) solid wastes generation and disposal (Fig 1). There are regulatory requirements which are to be complied. Environmental performance of the plant greatly impacts the natural environment around the plant. Environmental management practices are followed by the plant management to address to the environmental concerns and to take reasonable and practical measures to preserve and enhance the quality of the environment which is affected by the plant. Environmental management practices normally ensure that the plant achieves environmental performance results which are superior to the environmental standards set by the regulatory authorities. Fig 1 Environmental concerns of a steel plant The major activities and the main processes in an integrated iron and steel plant having blast furnace (BF) – basic oxygen furnace (BOF) process route, which are of relevance to the environmental performance and the associated environmental releases are described below. Raw materials handling and storage The main environmental issue relating to raw materials handling and storage is the fugitive emission of particulate matter arising from material transfers, dumper and other vehicular traffic, and wind erosion of the piles of the raw material storage. A secondary concern is the suspended solids and, in some cases, oil, contained in the runoff water from the storage areas. Fugitive emissions of particulate matter are normally controlled by spraying stockpiles with water or crusting agents and ensuring that roads and wheels of dumpers and other vehicles are kept clean. The water runoff is generally directed to a waste water treatment plant. Coke making Coke making represents perhaps the greatest environmental concern for a steel plant. Although...

Solid Waste Management in a Steel Plant Sep29

Solid Waste Management in a Steel Plant...

Solid Waste Management in a Steel Plant  Steel industry in general, produces large amounts of solid wastes while processing materials through its various processes. These solid wastes have many valuable products, which can be reused if recovered economically. Steel industry throughout the world has already taken up a number of innovative measures and continues to take further for 100 % utilization of these wastes with the ultimate objective of improving the operational efficiency and economics of steel industry. These measures not only reduce the cost of waste disposal and environmental pollution but also provide substantial amount of iron ore and flux materials as well as fuel rate benefits to the existing process, thereby conserving matching amounts of raw materials. Steel industry is both capital and energy intensive and its production volumes are very high. Process chains within the industry are long. Many different technologies are applied and the industry has a significant impact on the environment. One of the major concerns of world steel industry is the disposal of wastes generated at various stages of processing. Because of natural drive to be cost-effective, there is a growing trend of adopting such waste recovery technologies which convert wastes into wealth, thereby treating wastes as by-products. This has led to aiming at development of zero-waste technologies. The technologies developed to economically convert wastes of steel plants into wealth also provide new business opportunities for prospective entrepreneurs. As per World Steel Association (WSA), the world steel industry applies the principles of reduction, reuse and recycling (3 ‘R’s) in many ways, in order to improve the sustainability of the industry. Due to this the industry has dramatically reduced need for raw materials. In the 1970s and 1980s, modern steel plants needed an average of 1.44 tons of raw...