Air pollution due to construction
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This document is a presentation on air pollution due to construction. It discusses the types of primary and secondary air pollutants produced by human activity, with a focus on those resulting from construction processes. These include sulfur oxides, nitrogen oxides, carbon monoxide, carbon dioxide, and volatile organic compounds from primary sources, and smog, ground-level ozone, and peroxyacetyl nitrate from secondary sources. The presentation then outlines several prevention methods to reduce air pollution from construction activities, such as wetting dusty materials, enclosing conveyor belts and transfer points, using water sprays during drilling and cutting, wetting areas before blasting, and enclosing skip hoists.
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pollution due to construction
This document discusses four main types of pollution that can result from construction sites: air, water, noise, and land pollution. It provides introductions and examples of effects and causes for each type. Air pollution from construction can spread particulate matter and gases from activities. Water pollution occurs when surface runoff and groundwater near sites become contaminated with materials like chemicals, paints and oils. Noise pollution is generated by construction work but can be reduced by preventive measures. Soil pollution happens through airborne deposition of contaminants and contaminated water runoff accumulating pollutants in the land. The construction of a swimming pool opposite a building was provided as a specific example that could cause these four types of pollution to the surrounding community.
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pollution due to construction
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The document discusses various types and sources of environmental pollution. It provides definitions for key terms related to pollution such as pollutant, contaminant, receptor, and sinks. The major types of air pollutants discussed are carbon monoxide, nitrogen oxides, sulfur dioxide, and particulates. The sources and effects of these pollutants are described, as well as various approaches to control pollution, such as catalytic converters and scrubbers. The formation of acid rain from nitrogen and sulfur pollutants is also summarized.
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The document discusses the 1997 air pollution episode in Dhaka, Bangladesh. It notes that Dhaka has extremely high levels of air pollutants that exceed international standards. Major sources of pollution include vehicles, brick kilns burning hazardous materials, and a growing population. High concentrations of particulate matter, sulfur dioxide, lead, and other pollutants have caused many health issues for residents such as respiratory diseases and cancer. Immediate action is needed to improve emissions controls, transportation systems, and increase green spaces to address Dhaka's severe air pollution problems.
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how we can control environmental pollution in cities
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- 1. A presentation On AIR POLLUTION DUE T0 CONSTRUCTION Presented by- Rahul chaudhary B. Tech, C E(4th year) Roll- 1436000096 Submitted to : Department of Civil Engg. G I T M Lucknow
- 2. Air pollution is a change in the physical, chemical and biological characteristic of air that causes adverse effects on humans and other organisms. The ultimate result is a change in the natural environment and/or ecosystem. What is Air Pollution?
- 4. Types of Air Pollutants: Major primary pollutants produced by human activity include: i. Sulphur oxides (SOx) ii. Nitrogen oxides (NOx) iii. Carbon monoxide iv. Carbon dioxide (CO2) v.Volatile organic compounds
- 5. Secondary pollutants include: 1) Smog 2) Ground level ozone (O3) 3) Peroxyacetyl nitrate (PAN)
- 6. Pollution due to Construction
- 7. Prevention of environment From the constructional pollution Loading, Unloading or Transfer of Dusty Materials Wet dusty materials with water spraying prior to operation.
- 8. Enclose the belt conveyor from the top and the 2 sides. Enclose the transfer point between conveyors. Install belt scraper and bottom plates. Maintain vertical distance between belt conveyor outlet and material landing point at <1 m. Enclose the unloading area. Transfer of Dusty Materials with a Belt Conveyor System Transfer point enclosed
- 9. Drilling, Cutting & Polishing, etc Spray surface continuously with water. Equip with effective dust extraction and filtering device.
- 10. Blasting Wet area within 30 m before blasting. No blasting during the strong wind signal or tropical cyclone warning No.3 or above is hoisted unless permitted by Commissioner of Mines.
- 11. Construction of the Superstructure of Building Provide effective dust screen where a scaffolding is erected. Enclose the skip hoist.
- 12. THANK S