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Yarra Valley Water
Yarra Valley Water is the largest of three Government of Victoria, Victorian Government owned retail Water industry, water corporations that provides drinking water, sewerage, trade waste, recycled water, and water-saving services to over two million people and over 61,000 businesses in the northern and eastern suburbs of Melbourne, Australia, Melbourne, or around 30% of Victoria's population. The water distributed by Yarra Valley Water is supplied by Melbourne Water, as is the infrastructure. Oversight is provided by the Department of Energy, Environment and Climate Action. Yarra Valley Water's district covers approximately 4,000 square kilometres from as far north as Wallan, Victoria, Wallan and extending to Warburton, Victoria, Warburton in the east. Yarra Valley Water owns and maintains over 10,400km of water mains and over 10,300km of sewer mains. Yarra Valley Water's activities are overseen by an independent Board of Directors appointed by the Victorian Government. Yarra ...
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Melbourne And Metropolitan Board Of Works
The Melbourne and Metropolitan Board of Works (MMBW) was a public utility board in Melbourne, Australia, set up in 1891 to provide water supply, sanitary sewer, sewerage and sewage treatment functions for the city. In 1992, the MMBW was merged with a number of smaller urban water authorities to form Melbourne Water. MMBW was abolished in 1992. Establishment From Melbourne's settlement in the 1830s into the boom years of the 1880s, the disposal of sewage was very basic. In the early days the majority of waste from homes and industries flowed into street channels and on to local rivers and creeks which became open sewers. By the 1880s, many homes in the inner city had privies backing into a rear lane, the Pail closet system where "Night soil" was collected in pans by a "nightman" reaching through a small door in the back of the outhouse, outdoor toilet. It was carted away to the outer fringes of Melbourne, where it was often used as fertiliser by market gardeners. Because the waste ...
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Net-zero Emissions
Global net-zero emissions is reached when greenhouse gas emissions and removals due to human activities are in balance. It is often called simply net zero. ''Emissions'' can refer to all greenhouse gases or only carbon dioxide (). Reaching net zero is necessary to stop further global warming. It requires deep cuts in emissions, for example by shifting from fossil fuels to sustainable energy, improving energy efficiency and halting deforestation. A small remaining fraction of emissions can then be offset using carbon dioxide removal. People often use the terms ''net-zero emissions'', ''carbon neutrality,'' and ''climate neutrality'' with the same meaning. However, in some cases, these terms have different meanings. For example, some standards for ''carbon neutral certification'' allow a lot of carbon offsetting. But ''net zero standards'' require reducing emissions to more than 90% and then only offsetting the remaining 10% or less to fall in line with 1.5 °C targets. Organ ...
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Digestate
Digestate is the material remaining after the anaerobic digestion (decomposition under low oxygen conditions) of a biodegradable feedstock. Anaerobic digestion produces two main products: digestate and biogas. Digestate is produced both by acidogenesis and methanogenesis and each has different characteristics. These characteristics stem from the original feedstock source as well as the processes themselves. Digestate feedstock sources Anaerobic digestion is a versatile process that can use many different types of feedstocks. Example of feedstocks can be from: * Sewage sludges: Liquid sludge, untreated sewage sludge, composted sludge, and lime treated sludge. * Animal wastes: Animal fats, animal blood, food remains, stomach contents, rumen contents, animal carcasses, and poultry, fish, and livestock manure. * Energy crops: Usually corn, maize, millet, and clover. This can be whole crops used in co-digestion or as waste (stems and stalks) from harvesting of these crops. * Municip ...
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Electrical Grid
An electrical grid (or electricity network) is an interconnected network for electricity delivery from producers to consumers. Electrical grids consist of power stations, electrical substations to step voltage up or down, electric power transmission to carry power over long distances, and finally electric power distribution to customers. In that last step, voltage is stepped down again to the required service voltage. Power stations are typically built close to energy sources and far from densely populated areas. Electrical grids vary in size and can cover whole countries or continents. From small to large there are microgrids, wide area synchronous grids, and super grids. The combined transmission and distribution network is part of electricity delivery, known as the ''power grid''. Grids are nearly always synchronous, meaning all distribution areas operate with three phase alternating current (AC) frequencies synchronized (so that voltage swings occur at almost the same ...
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Sewage Treatment
Sewage treatment is a type of wastewater treatment which aims to remove contaminants from sewage to produce an effluent that is suitable to discharge to the surrounding environment or an intended reuse application, thereby preventing water pollution from raw sewage discharges. Sewage contains wastewater from households and businesses and possibly pre-treated Industrial wastewater treatment, industrial wastewater. There are a large number of sewage treatment processes to choose from. These can range from Decentralized wastewater system, decentralized systems (including on-site treatment systems) to large centralized systems involving a network of pipes and pump stations (called sewerage) which convey the sewage to a treatment plant. For cities that have a combined sewer, the sewers will also carry urban runoff (stormwater) to the sewage treatment plant. Sewage treatment often involves two main stages, called primary and secondary treatment, while advanced treatment also incorpo ...
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Electricity Generation
Electricity generation is the process of generating electric power from sources of primary energy. For electric utility, utilities in the electric power industry, it is the stage prior to its Electricity delivery, delivery (Electric power transmission, transmission, Electric power distribution, distribution, etc.) to end users or its Grid energy storage, storage, using for example, the Pumped-storage hydroelectricity, pumped-storage method. Consumable electricity is not freely available in nature, so it must be "produced", transforming other forms of energy to electricity. Production is carried out in power stations, also called "power plants". Electricity is most often generated at a power plant by electromechanical electric generator, generators, primarily driven by heat engines fueled by combustion or nuclear fission, but also by other means such as the kinetic energy of flowing water and wind. Other energy sources include solar photovoltaics and geothermal power. There are ex ...
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Engine
An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power generation), heat energy (e.g. geothermal), chemical energy, electric potential and nuclear energy (from nuclear fission or nuclear fusion). Many of these processes generate heat as an intermediate energy form; thus heat engines have special importance. Some natural processes, such as atmospheric convection cells convert environmental heat into motion (e.g. in the form of rising air currents). Mechanical energy is of particular importance in transportation, but also plays a role in many industrial processes such as cutting, grinding, crushing, and mixing. Mechanical heat engines convert heat into work via various thermodynamic processes. The internal combustion engine is perhaps the most common example of a mechanical heat engine in wh ...
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Biogas
Biogas is a gaseous renewable energy source produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste, Wastewater treatment, wastewater, and food waste. Biogas is produced by anaerobic digestion with anaerobic organisms or methanogens inside an Anaerobic digestion, anaerobic digester, biodigester or a bioreactor. The gas composition is primarily methane () and carbon dioxide () and may have small amounts of hydrogen sulfide (), moisture and siloxanes. The methane can be combusted or oxidized with oxygen. This energy release allows biogas to be used as a fuel; it can be used in fuel cells and for heating purpose, such as in cooking. It can also be used in a gas engine to convert the energy in the gas into electricity and heat. After removal of carbon dioxide and hydrogen sulfide it can be compressed natural gas, compressed in the same way as natural gas and used to power Alternative fuel vehicle, motor vehicles. In the Un ...
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Anaerobic Digestion
Anaerobic digestion is a sequence of processes by which microorganisms break down biodegradable material in the absence of oxygen. The process is used for industrial or domestic purposes to Waste management, manage waste or to produce fuels. Much of the Fermentation (biochemistry), fermentation used industrially to produce food and drink products, as well as home fermentation, uses anaerobic digestion. Anaerobic digestion occurs naturally in some soils and in lake and oceanic basin sediments, where it is usually referred to as "anaerobic activity". This is the source of Methane#Occurrence, marsh gas methane as discovered by Alessandro Volta in 1776. Anaerobic digestion comprises four stages: * Hydrolysis *Acidogenesis *Acetogenesis *Methanogenesis The digestion process begins with bacterial hydrolysis of the input materials. Insoluble organic polymers, such as carbohydrates, are broken down to soluble derivatives that become available for other bacteria. Acidogenesis, Acidogen ...
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Food Loss And Waste
The causes of food going uneaten are numerous and occur throughout the food system, during production, processing, distribution, retail and food service sales, and consumption. Overall, about one-third of the world's food is thrown away. A similar amount is lost on top of that by feeding human-edible food to farm animals (the net effect wastes an estimated 1144 kcal/person/day). A 2021 meta-analysis, that did not include food lost during production, by the United Nations Environment Programme found that food waste was a challenge in all countries at all levels of economic development. The analysis estimated that global food waste was 931 million tonnes of food waste (about 121 kg per capita) across three sectors: 61 percent from households, 26 percent from food service and 13 percent from retail. Food loss and waste is a major part of the impact of agriculture on climate change (it amounts to 3.3 billion tons of CO2e emissions annually) and other environmental issues, ...
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Wollert, Victoria
Wollert ( ) is a suburb in Melbourne, Victoria, Australia, 26 km north of Melbourne's central business district, located within the City of Whittlesea local government area. Wollert recorded a population of 24,407 at the . History Etymology "Wollert" is a Woiwurrung word meaning "where possums abound", and the suburb takes its name from the land parish in which part of it is situated. 19th century From 1836 until the early 1850s, sheep raising was the main activity. Summerhill farm on Summerhill Road was built by Thomas Wilson, in the 1850s. He ran a dairy, pig and sheep farm. When he sold the property in 1886 it was regarded as one of the finest farming properties in Victoria at the time. A bluestone house and outbuildings, a bluestone quarry and dry stone wall in Bindts Road, Wollert are considered of high local significance. Hehr's Pine Park Farm complex in Epping Road illustrates early German building practices the manner of which the resources of the land were put t ...
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Waste-to-energy
Waste-to-energy (WtE) or energy-from-waste (EfW) refers to a series of processes designed to convert waste materials into usable forms of energy, typically electricity or heat. As a form of energy recovery, WtE plays a crucial role in both waste management and sustainable energy production by reducing the volume of waste in landfills and providing an alternative energy source. The most common method of WtE is direct combustion of waste to produce heat, which can then be used to generate electricity via steam turbines. This method is widely employed in many countries and offers a dual benefit: it disposes of waste while generating energy, making it an efficient process for both waste reduction and energy production. In addition to combustion, other WtE technologies focus on converting waste into fuel sources. For example, gasification and pyrolysis are processes that thermochemically decompose organic materials in the absence of oxygen to produce syngas, a synthetic gas prima ...
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