Incineration in the context of "Chimney"

Environmental racism, ecological racism, or ecological apartheid is a form of racism leading to negative environmental outcomes such as landfills, incinerators, and hazardous waste disposal disproportionately impacting communities of color, violating substantive equality. Internationally, it is also associated with extractivism, which places the environmental burdens of mining, oil extraction, and industrial agriculture upon indigenous peoples and poorer nations largely inhabited by people of color.

Environmental racism is the disproportionate impact of environmental hazards, pollution, and ecological degradation experienced by marginalized communities, as well as those of people of color. Environmental racism is embedded in policy making- both domestically and internationally- and is a pertinent example of structural racism which consequently produces health hierarchies. It is imperative to also note the intersection of environmental racism with sexism: the vulnerabilities faced by marginalised women and gender minority groups as a result of existing health inequities are exacerbated by the consequences of environmental racism. In the United States, some communities are continuously polluted while the government gives little to no attention. According to Robert D. Bullard, father of environmental justice, environmental regulations are not equally benefiting all of society; people of color (African Americans, Latinos, Asians, Pacific Islanders, and Native Americans) are disproportionately harmed by industrial toxins in their jobs and their neighborhoods. Within this context, understanding the intersectionality of race, socio-economic status, and environmental injustice through its history and the disproportionate impact is a starting point for leaning towards equitable solutions for environmental justice for all segments of society. Exploring the historical roots, impacts of environmental racism, governmental actions, grassroots efforts, and possible remedies can serve as a foundation for addressing this issue effectively.

Sewage sludge treatment describes the processes used to manage and dispose of sewage sludge produced during sewage treatment. Sludge treatment is focused on reducing sludge weight and volume to reduce transportation and disposal costs, and on reducing potential health risks of disposal options. Water removal is the primary means of weight and volume reduction, while pathogen destruction is frequently accomplished through heating during thermophilic digestion, composting, or incineration. The choice of a sludge treatment method depends on the volume of sludge generated, and comparison of treatment costs required for available disposal options. Air-drying and composting may be attractive to rural communities, while limited land availability may make aerobic digestion and mechanical dewatering preferable for cities, and economies of scale may encourage energy recovery alternatives in metropolitan areas.

Sludge is mostly water with some amounts of solid material removed from liquid sewage. Primary sludge includes settleable solids removed during primary treatment in primary clarifiers. Secondary sludge is sludge separated in secondary clarifiers that are used in secondary treatment bioreactors or processes using inorganic oxidizing agents. In intensive sewage treatment processes, the sludge produced needs to be removed from the liquid line on a continuous basis because the volumes of the tanks in the liquid line have insufficient volume to store sludge. This is done in order to keep the treatment processes compact and in balance (production of sludge approximately equal to the removal of sludge). The sludge removed from the liquid line goes to the sludge treatment line. Aerobic processes (such as the activated sludge process) tend to produce more sludge compared with anaerobic processes. On the other hand, in extensive (natural) treatment processes, such as ponds and constructed wetlands, the produced sludge remains accumulated in the treatment units (liquid line) and is only removed after several years of operation.

Recycling is the process of converting waste materials into new materials and objects. This concept often includes the recovery of energy from waste materials. The recyclability of a material depends on its ability to reacquire the properties it had in its original state. It is an alternative to "conventional" waste disposal that can save material and help lower greenhouse gas emissions. It can also prevent the waste of potentially useful materials and reduce the consumption of fresh raw materials, reducing energy use, air pollution (from incineration) and water pollution (from landfilling).

Recycling is a key component of modern waste reduction and represents the third step in the "Reduce, Reuse, and Recycle" waste hierarchy, contributing to environmental sustainability and resource conservation. It promotes environmental sustainability by removing raw material input and redirecting waste output in the economic system. There are some ISO standards related to recycling, such as ISO 15270:2008 for plastics waste and ISO 14001:2015 for environmental management control of recycling practice.

Waste management laws govern the transport, treatment, storage, and disposal of all manners of waste, including municipal solid waste, hazardous waste, and nuclear waste, among many other types. Waste laws are generally designed to minimize or eliminate the uncontrolled dispersal of waste materials into the environment. When left unregulated, these dispersals can cause ecological or biological harm. Most waste management laws are designed to reduce the generation of waste and promote or mandate waste recycling. Waste management laws also regulate organic waste disposal, including composting which is increasingly being recognized as a more sustainable alternative to landfilling and incineration. Regulatory efforts include classifying waste types, setting standards for transport, treatment, storage, and disposal, and establishing enforcement mechanisms.

A chimney is an architectural ventilation structure made of masonry, clay or metal that isolates hot toxic exhaust gases or smoke produced by a boiler, stove, furnace, incinerator, or fireplace from human living areas. Chimneys are typically vertical, or as near as possible to vertical, to ensure that the gases flow smoothly, drawing air into the combustion in what is known as the stack, or chimney effect. The space inside a chimney is called the flue. Chimneys are adjacent to large industrial refineries, fossil fuel combustion facilities or part of buildings, steam locomotives and ships.

In the United States, the term smokestack industry refers to the environmental impacts of burning fossil fuels by industrial society, including the electric industry during its earliest history. The term smokestack (colloquially, stack) is also used when referring to locomotive chimneys or ship chimneys, and the term funnel can also be used.

Tokyo is the most populated of Japan's 47 prefectures. Mainland Tokyo is divided into two sections: Western Tokyo and the special wards of Tokyo. The prefecture's tallest structures are within the 23 special wards, which comprise the area formerly incorporated as Tokyo City. As of May 2025, there are over 200 structures in Tokyo that stand at least 150 metres (490 ft) tall, of which 49 are at least 200 metres (660 ft) tall, including those that are still under construction but have been topped out. Most of these structures are buildings; however, there are other types of structures among the tallest in the prefecture, such as freestanding towers and incineration smokestacks.

The tallest structure in the prefecture is Tokyo Skytree, a megatall lattice tower that rises 634 metres (2,080 feet), which was completed in 2012. It also stands as the tallest structure in Japan, the tallest tower in the world, and the third-tallest freestanding structure in the world. The second-tallest structure in Tokyo is the 333-metre-tall (1,093-foot) Tokyo Tower, a lattice tower completed in 1958. The tallest building and third-tallest overall structure is the 325-metre-tall (1,066-foot) Azabudai Hills Mori JP Tower, completed in 2023 and being Tokyo's only supertall skyscraper. It is also the tallest building in Japan and the world's largest skyscraper by floor area. The second-tallest building and fourth-tallest structure is the 284-metre-tall (932-foot) Nihonbashi 1-Chōme Central District Redevelopment (tentative name), which is topped out and scheduled for completion in 2026. Including topped-out buildings, Tokyo is home to 17 of the 25 tallest freestanding structures and 18 of the 25 tallest buildings in Japan.

NIMBY (/ˈnɪmbi/; or, nimby), an acronym for the phrase "Not In My Back yard", is a characterization of opposition by residents to proposed real estate development and infrastructure developments in their local area, as well as support for strict land use regulations. It carries the connotation that such residents are only opposing the development because it is close to them and that they would tolerate or support it if it were built farther away. The residents are often called nimbys, and their viewpoint is called nimbyism. The opposite movement is known as YIMBY for "yes in my back yard".

Some examples of projects that have been opposed by nimbys include housing development (especially for affordable housing or trailer parks), high-speed rail lines, homeless shelters, day cares, schools, universities and colleges, music venues, bike lanes and transportation planning that promotes pedestrian safety infrastructure, solar farms, wind farms, incinerators, sewage treatment systems, fracking, and nuclear waste repositories.