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Water Supply And Sanitation In Hong Kong
Water supply and sanitation in Hong Kong is characterised by water import, reservoirs and treatment infrastructure. Though multiple measures were made throughout its history, providing an adequate water supply for Hong Kong has met with numerous challenges because the region has few natural lakes and rivers, inadequate groundwater sources (inaccessible in most cases due to the hard granite bedrock found in most areas in the territory), a high population density, and extreme seasonable variations in rainfall. Thus nearly 80 percent of water demand is met by importing water from mainland China, based on a longstanding contract. In addition, freshwater demand is curtailed by the use of seawater for toilet flushing, using a separate distribution system. Hong Kong also uses reservoirs and water treatment plants to maintain its source of clean water. History Water rationing Until 1964 water rationing - the act of limiting water usage for each households by water providers - was a con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Supply
Water supply is the provision of water by public utilities, commercial organisations, community endeavors or by individuals, usually via a system of pumps and pipes. Public water supply systems are crucial to properly functioning societies. These systems are what supply drinking water to populations around the globe. Aspects of service quality include continuity of supply, water quality and water pressure. The institutional responsibility for water supply is arranged differently in different countries and regions (urban versus rural). It usually includes issues surrounding policy and regulation, service provision and standardization. The cost of supplying water consists, to a very large extent, of fixed costs (capital costs and personnel costs) and only to a small extent of variable costs that depend on the amount of water consumed (mainly energy and chemicals). Almost all service providers in the world charge tariffs to recover part of their costs. Water supply is a separat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greywater
Greywater (or grey water, sullage, also spelled gray water in the United States) refers to domestic wastewater generated in households or office buildings from streams without fecal contamination, i.e., all streams except for the wastewater from toilets. Sources of greywater include sinks, showers, baths, washing machines or dishwashers. As greywater contains fewer pathogens than blackwater, it is generally safer to handle and easier to treat and reuse onsite for toilet flushing, landscape or crop irrigation, and other non- potable uses. Greywater may still have some pathogen content from laundering soiled clothing or cleaning the anal area in the shower or bath. The application of greywater reuse in urban water systems provides substantial benefits for both the water supply subsystem, by reducing the demand for fresh clean water, and the wastewater subsystems by reducing the amount of conveyed and treated wastewater. Treated greywater has many uses, such as toilet fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Chlorination
Water chlorination is the process of adding chlorine or chlorine compounds such as sodium hypochlorite to water. This method is used to kill bacteria, viruses and other microbes in water. In particular, chlorination is used to prevent the spread of waterborne diseases such as cholera, dysentery, and typhoid. History In a paper published in 1894, it was formally proposed to add chlorine to water to render it "germ-free". Two other authorities endorsed this proposal and published it in many other papers in 1895. Early attempts at implementing water chlorination at a water treatment plant were made in 1893 in Hamburg, Germany. In 1897 the town of Maidstone, England was the first to have its entire water supply treated with chlorine. Permanent water chlorination began in 1905, when a faulty slow sand filter and a contaminated water supply caused a serious typhoid fever epidemic in Lincoln, England. Alexander Cruickshank Houston used chlorination of the water to stop the epid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Filtration
Filtration is a physical separation process that separates solid matter and fluid from a mixture using a ''filter medium'' that has a complex structure through which only the fluid can pass. Solid particles that cannot pass through the filter medium are described as ''oversize'' and the fluid that passes through is called the ''filtrate''. Oversize particles may form a filter cake on top of the filter and may also block the filter lattice, preventing the fluid phase from crossing the filter, known as ''blinding''. The size of the largest particles that can successfully pass through a filter is called the effective ''pore size'' of that filter. The separation of solid and fluid is imperfect; solids will be contaminated with some fluid and filtrate will contain fine particles (depending on the pore size, filter thickness and biological activity). Filtration occurs both in nature and in engineered systems; there are biological, geological, and industrial forms. Filtration is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sedimentation
Sedimentation is the deposition of sediments. It takes place when particles in suspension settle out of the fluid in which they are entrained and come to rest against a barrier. This is due to their motion through the fluid in response to the forces acting on them: these forces can be due to gravity, centrifugal acceleration, or electromagnetism. Settling is the falling of suspended particles through the liquid, whereas sedimentation is the final result of the settling process. In geology, sedimentation is the deposition of sediments which results in the formation of sedimentary rock. The term is broadly applied to the entire range of processes that result in the formation of sedimentary rock, from initial erosion through sediment transport and settling to the lithification of the sediments. However, the strict geological definition of sedimentation is the mechanical deposition of sediment particles from an initial suspension in air or water. Sedimentation may pertain to obje ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HK WSD TaiPoTauPumpingStations
Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China (abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delta in South China. With 7.5 million residents of various nationalities in a territory, Hong Kong is one of the most densely populated places in the world. Hong Kong is also a major global financial centre and one of the most developed cities in the world. Hong Kong was established as a colony of the British Empire after the Qing Empire ceded Hong Kong Island from Xin'an County at the end of the First Opium War in 1841 then again in 1842.. The colony expanded to the Kowloon Peninsula in 1860 after the Second Opium War and was further extended when Britain obtained a 99-year lease of the New Territories in 1898... British Hong Kong was occupied by Imperial Japan from 1941 to 1945 during World War II; British administration resumed a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HK WSD ShaTinWaterTreatmentWorks
Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China (abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delta in South China. With 7.5 million residents of various nationalities in a territory, Hong Kong is one of the most densely populated places in the world. Hong Kong is also a major global financial centre and one of the most developed cities in the world. Hong Kong was established as a colony of the British Empire after the Qing Empire ceded Hong Kong Island from Xin'an County at the end of the First Opium War in 1841 then again in 1842.. The colony expanded to the Kowloon Peninsula in 1860 after the Second Opium War and was further extended when Britain obtained a 99-year lease of the New Territories in 1898... British Hong Kong was occupied by Imperial Japan from 1941 to 1945 during World War II; British administration resumed a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hong Kong Island
Hong Kong Island is an island in the southern part of Hong Kong. Known colloquially and on road signs simply as Hong Kong, the island has a population of 1,289,500 and its population density is 16,390/km2, . The island had a population of about 3,000 inhabitants scattered in a dozen fishing villages when it was occupied by the United Kingdom in the First Opium War (1839–1842). In 1842, the island was formally ceded in perpetuity to the UK under the Treaty of Nanking and the City of Victoria was then established on the island by the British Force in honour of Queen Victoria. The Central area on the island is the historical, political and economic centre of Hong Kong. The northern coast of the island forms the southern shore of the Victoria Harbour, which is largely responsible for the development of Hong Kong due to its deep waters favoured by large trade ships. The island is home to many famous sights, such as " The Peak", Ocean Park, many historical sites and various ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ap Lei Chau
Ap Lei Chau or Aberdeen Island is an island of Hong Kong, located off Hong Kong Island next to Aberdeen Harbour and Aberdeen Channel. It has an area of after land reclamation. Administratively it is part of the Southern District. Ap Lei Chau is the fourth most densely populated island in the world, it is also the most densely populated island in the world with a population of over 10,000. In the 2000s on their website the Guinness World Records called it the world's most densely populated island. History Before the First Opium War, Ap Lei Chau was a small fishing village, with its harbour forming an excellent natural typhoon shelter. The island appears on a Ming-era map with its primary settlement labelled "Fragrant Harbour Village". This is the probable origin of the name for Hong Kong, although the town eventually took the name of its island. Under the terms of the 1841 Treaty of Nanking, it was ceded to the British together with Hong Kong Island. It was sometim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuen Mun
Tuen Mun or Castle Peak is an area near the mouth of Tuen Mun River and Castle Peak Bay in the New Territories, Hong Kong. It was one of the earliest settlements in what is now Hong Kong and can be dated to the Neolithic period. In the more recent past, it was home to many Tanka fishermen who gathered at Castle Peak Bay. Tuen Mun is now a modern, mainly residential area in the north-west New Territories. As of 2011, 487,546 live in Tuen Mun and over 95% of them are Chinese. History During the Tang dynasty (618907), a navy town, Tuen Mun Tsan () was established in Nantou, which lies across Deep Bay. Tuen Mun and the rest of Hong Kong were under its protection. A major clan, To (), brought the name Tuen Mun to the area. They migrated from Jiangxi on the Chinese mainland and established a village Tuen Mun Tsuen ()Antiquities and Monuments OfficeTuen Tsz Wai - History/ref> late in the Yuan dynasty (1272–1368). As more and more villages were established, the village wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fanling
Fanling ( zh, t=粉嶺; also spelled Fan Ling or Fan Leng) is a town in the New Territories East of Hong Kong. Administratively, it is part of the North District. Fanling Town is the main settlement of the Fanling area. The name Fanling is a shortened form of Fan Pik Leng (). The area has several public and private estates. Northwest of Fanling is Sheung Shui and southeast is Tai Po. Areas Part of Fanling–Sheung Shui New Town, Fanling Town includes Luen Wo Hui (), the marketplace of Fanling before urban development in the area, and Wo Hop Shek (), where an uphill public cemetery is located. Fanling North is one of three new development areas currently being planned for North District, in parallel with Ta Kwu Ling and Kwu Tung North. Sights * Fanling Wai (), a walled village. * Fung Ying Seen Koon (), a Taoist temple. * Lung Yeuk Tau Heritage Trail * Tao Heung Foods of Mankind Museum (relocated to Fo Tan in 2008) Housing estates Public and private housin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sheung Shui
Sheung Shui (, literally "Above-water") is an area in the New Territories, Hong Kong. Sheung Shui Town, a part of this area, is part of the Fanling–Sheung Shui New Town in the North District of Hong Kong. Fanling Town is to its southeast. History Shek Wu Hui () used to be the marketplace of the Sheung Shui area, before the development of Sheung Shui Town. Bounded by Lung Sum Avenue (), San Fung Avenue and Jockey Club Road, it was the main market in the Sheung Shui area from the 1930s onwards. Today some private residences can be found towering over the old flats in the ''hui'' (market). The majority of the buildings still standing were repaired in the 1950s. Sheung Shui Wai (), originally lived in by the Liu () clan, is a walled village. The ancestral hall Liu Man Shek Tong () in the village is one of the declared monuments of Hong Kong. The , located near Sheung Shui Wai and originally established by the Liu clan, is the largest secondary school in Hong Kong, in term ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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