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Nereda Epe STP
Nereda is a wastewater treatment technology invented by Mark van Loosdrecht of the Delft University of Technology in the Netherlands. The technology is based on aerobic granulation and is a modification of the activated sludge process. Aerobic granular sludge can be formed by applying specific process conditions that favour slow growing organisms such as PAOs (polyphosphate accumulating organisms) and GAOs (glycogen accumulating organisms). Another key part of granulation is selective washing whereby slow settling floc-like sludge is discharged as waste sludge and faster settling biomass is retained. At the full-scale, the Nereda system consists of a cyclical process with three main cycle components or phases, namely: simultaneous fill and draw, aeration / reaction and settling. The aerobic granules form excellent settling properties allowing for higher biomass concentrations (8g/L), the non-use of secondary clarifiers and the exclusion of major sludge recycle pumping in the Nereda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wastewater Treatment
Wastewater treatment is a process used to remove contaminants from wastewater and convert it into an effluent that can be returned to the water cycle. Once returned to the water cycle, the effluent creates an acceptable impact on the environment or is reused for various purposes (called water reclamation). The treatment process takes place in a wastewater treatment plant. There are several kinds of wastewater which are treated at the appropriate type of wastewater treatment plant. For domestic wastewater (also called municipal wastewater or sewage), the treatment plant is called a sewage treatment plant. For industrial wastewater, treatment either takes place in a separate industrial wastewater treatment plant, or in a sewage treatment plant (usually after some form of pre-treatment). Further types of wastewater treatment plants include agricultural wastewater treatment plants and leachate treatment plants. Processes commonly used in wastewater treatment include phase sepa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark Van Loosdrecht
Mark van Loosdrecht (born 1959) is a Dutch professor in environmental biotechnology at Delft University of Technology. He was the creator of Nereda, a wastewater treatment technology developed by a cooperation between the Delft University of Technology, the Dutch Foundation for Applied Water Research (STOWA) and Royal HaskoningDHV. Life and career Van Loosdrecht was born in Loon op Zand in 1959. He studied environmental hygiene at Wageningen University and Research and obtained his PhD in 1988. He became a professor at Delft University of Technology in 1999. Van Loosdrecht is chief editor of the scientific journal ''Water Research''. Awards and honours Van Loosdrecht was elected a member of the Royal Netherlands Academy of Arts and Sciences in 2004. In 2015 he was elected an international member of the National Academy of Engineering of the United States. In 2019 he was elected a foreign member of the Chinese Academy of Engineering. Van Loosdrecht was named Knight in the Order o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TU Delft
Delft University of Technology ( nl, Technische Universiteit Delft), also known as TU Delft, is the oldest and largest Dutch public technical university, located in Delft, Netherlands. As of 2022 it is ranked by QS World University Rankings among the top 10 engineering and technology universities in the world. In the fields of architecture and civil engineering, it was ranked 2nd in the world, after MIT (Massachusetts Institute of Technology). With eight faculties and numerous research institutes, it has more than 26,000 students (undergraduate and postgraduate) and 6,000 employees (teaching, research, support and management staff). The university was established on 8 January 1842 by William II of the Netherlands as a Royal Academy, with the primary purpose of training civil servants for work in the Dutch East Indies. The school expanded its research and education curriculum over time, becoming a polytechnic school in 1864 and an institute of technology (making it a full-fledged ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aerobic Granulation
The biological treatment of wastewater in the sewage treatment plant is often accomplished using conventional activated sludge systems. These systems generally require large surface areas for treatment and biomass separation units due to the generally poor settling properties of the sludge. Aerobic granules are a type of sludge that can self-immobilize flocs and microorganisms into spherical and strong compact structures. The advantages of aerobic granular sludge are excellent settleability, high biomass retention, simultaneous nutrient removal and tolerance to toxicity. Recent studies show that aerobic granular sludge treatment could be a potentially good method to treat high strength wastewaters with nutrients, toxic substances. The aerobic granular sludge usually is cultivated in SBR (sequencing batch reactor) and applied successfully as a wastewater treatment for high strength wastewater, toxic wastewater and domestic wastewater. Compared with conventional aerobic granular proce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Activated Sludge Process
The activated sludge process is a type of biological wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa. It uses air (or oxygen) and microorganisms to biologically oxidize organic pollutants, producing a waste sludge (or floc) containing the oxidized material. The activated sludge process for removing carbonaceous pollution begins with an aeration tank where air (or oxygen) is injected into the waste water. This is followed by a settling tank to allow the biological flocs (the sludge blanket) to settle, thus separating the biological sludge from the clear treated water. Part of the waste sludge is recycled to the aeration tank and the remaining waste sludge is removed for further treatment and ultimate disposal. Plant types include package plants, oxidation ditch, deep shaft/vertical treatment, surface-aerated basins, sequencing batch reactors (SBRs). Aeration methods include diffuse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nereda WWTP Garmerwolde, The Netherlands
Nereda is a wastewater treatment technology invented by Mark van Loosdrecht of the Delft University of Technology in the Netherlands. The technology is based on aerobic granulation and is a modification of the activated sludge process. Aerobic granular sludge can be formed by applying specific process conditions that favour slow growing organisms such as PAOs (polyphosphate accumulating organisms) and GAOs (glycogen accumulating organisms). Another key part of granulation is selective washing whereby slow settling floc-like sludge is discharged as waste sludge and faster settling biomass is retained. At the full-scale, the Nereda system consists of a cyclical process with three main cycle components or phases, namely: simultaneous fill and draw, aeration / reaction and settling. The aerobic granules form excellent settling properties allowing for higher biomass concentrations (8g/L), the non-use of secondary clarifiers and the exclusion of major sludge recycle pumping in the Nereda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delft University Of Technology
Delft University of Technology ( nl, Technische Universiteit Delft), also known as TU Delft, is the oldest and largest Dutch public technical university, located in Delft, Netherlands. As of 2022 it is ranked by QS World University Rankings among the top 10 engineering and technology universities in the world. In the fields of architecture and civil engineering, it was ranked 2nd in the world, after MIT (Massachusetts Institute of Technology). With eight faculties and numerous research institutes, it has more than 26,000 students (undergraduate and postgraduate) and 6,000 employees (teaching, research, support and management staff). The university was established on 8 January 1842 by William II of the Netherlands as a Royal Academy, with the primary purpose of training civil servants for work in the Dutch East Indies. The school expanded its research and education curriculum over time, becoming a polytechnic school in 1864 and an institute of technology (making it a full-fledged ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal HaskoningDHV
Royal HaskoningDHV is an international, non-listed engineering consultancy firm with headquarters in Amersfoort, Netherlands. It has offices in 30 countries, employing 5,800 professionals worldwide. Royal HaskoningDHV is active in aviation, buildings, energy, industry, infrastructure, maritime, mining, rural and urban development and water. Financial history History Royal Haskoning Johan van Hasselt taught civil engineering at the Royal Netherlands Military Academy in Breda for a year before starting his own engineering firm. Jacobus de Koning joined as a partner on October 15, 1881 and the engineering firm Hasselt & De Koning was established. The name of the firm changed quite a lot over the years. The name 'Haskoning' made its debut in the letterhead in the autumn of 1976. The acronym Haskoning started out as a telegram address. Reducing the length of the name was extremely practical because of the many international telegrams. In 1981 the company received the designation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nereus
In Greek mythology, Nereus ( ; ) was the eldest son of Pontus (the Sea) and Gaia (the Earth), with Pontus himself being a son of Gaia. Nereus and Doris became the parents of 50 daughters (the Nereids) and a son ( Nerites), with whom Nereus lived in the Aegean Sea. Etymology R. S. P. Beekes suggests a Pre-Greek origin. Mythology In the ''Iliad'', the Old Man of the Sea is the father of Nereids, though Nereus is not directly named. He was never more manifestly the Old Man of the Sea than when he was described, like Proteus, as a shapeshifter with the power of prophecy, who would aid heroes such as Heracles who managed to catch him even as he changed shapes. Nereus and Proteus (the "first") seem to be two manifestations of the god of the sea who was supplanted by Poseidon when Zeus overthrew Cronus. The earliest poet to link Nereus with the labours of Heracles was Pherekydes, according to a ''scholion'' on Apollonius of Rhodes. During the course of the 5th century BC, Ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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