process of wastewater treatment ppt
Flocculation dynamics of synthetic and activated sludge in wastewater treatment pptx
... concerns in the operation of wastewater treatment plants. The identification and eventual control of bioflocculation mechanisms is therefore of major interest [4]. The formation of stable biological ... operation of the process. In many cases, the efficiency of the clarifier is the limiting factor in producing a high quality effluent, and it is often regarded as the bottleneck of the process ... clarifier is one of the most critical operations in the activated sludge process. Bioflocculation of activated sludge determines how the sludge will dewater, flow, and settle, all of which are...
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Biology of wastewater treatment
... clean, infiltration has the effect of diluting the strength of wastewater and at the same time increasing the volume requiring treatment. The flow rate of wastewater to treatment works is extremely ... nature of wastewater has led to the development of thepresent system of treatment found in nearly all the technically-developedcountries, which is based on treating large volumes of weak wastewater. In ... food processing.January 19, 2004 14:33 World Scientific Biology of Wastewater Treatmen t (New Edition) bwtPreface to the Second EditionSince writing the first edition of Biology of Wastewater Treatment...
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Báo cáo khoa học: "Lexical Selection in the Process of Language Generation" ppt
... for focus in- dude: • end -of- transfer, • beginning -of- transfer, • activity -of- transfer, • goal -of- object, • source -of- object, • goal -of- money, • source -of- money. That is, lexical/zation ... lines of McDonald and Pustejovsky, 1985a). To illustrate the knowledge that bears upon the choice of an open-class lexicM item, let us trace the process of lexicai selection of one of the ... a discussion of problems inherent in this approach see McDonald, Vaughau and Pustejovsky, 1986); the pragmatic nature of some of the tests, as well ms the fine level of detail of knowledge...
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Refrigeration and Air-Conditioning.Refrigeration: The process of removing heat ppt
... 1.1Change of temperature (K) and state of water with enthalpy373.15 K273.16 KTemperatureLatentheat of meltingSensible heat of gasLatent heat of boilingSensible heat of liquidSensible heat of ... the drainage of condensate or the escape of bubbles of vapour. The total heattransfer will be the sum of the two components.Rates of two-phase heat transfer depend on properties of thevolatile ... cooling times of thick solids consider the slab as anumber of finite layers, each of which is both conducting andabsorbing heat over successive periods of time. Original methods of solving transient...
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Refrigeration and Air-Conditioning Refrigeration: The process of removing heat ppt
... the drainage of condensate or the escape of bubbles of vapour. The total heattransfer will be the sum of the two components.Rates of two-phase heat transfer depend on properties of thevolatile ... energy (B1 – A1) may be readoff directly in terms of enthalpy of the fluid.The distance of D1 between the two parts of the curve indicatesthe proportion of flash gas at that point. The ... atmosphere.For example, R134a has a GWP of 1300, which means that theemission of 1 kg of R134a is equivalent to 1300 kg of CO2. Thechoice of refrigerant affects the GWP of the plant, but other factorsalso...
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Báo cáo lâm nghiệp: "Energy consumption of a chipper coupled to a universal wheel skidder in the process of chipping wood" pptx
... the chemical processing of chips by a sulphite process the length of chips from 20 to 30 mm and the thickness from 3 to 6 mm are recommended. In a sulphate process the length of chips is from ... disintegrated into chips of required di-mensions (of length l and thickness h).e basic factors which influence the proper-ties of chips and specific consumption of energy in the process of chipping wood, ... impor-tant is also the value of overhang from the plane of the disc in the process of step on the disc and work with a gradual change of the radius for the cutting edge of the knife. Knives for...
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Handbook of Water and Wastewater Treatment Plant Operations - Chapter 6 ppt
... current of a parallel circuit is equal tothe sum of the currents of the individualbranches of the circuit.4. The total resistance of a parallel circuit is equalto the reciprocal of the sum of ... that are made of differentmetals. For example, determining the resistance of a cir-cular-mil-foot of each of the substances may make a basis of comparison of the resistivity of various substances.Note: ... resistance and size of one conductorwith another. The unit of linear measurement used is (inregards to diameter of a piece of wire) the mil (0.001 of an inch). A convenient unit of wire length used...
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Handbook of Water and Wastewater Treatment Plant Operations - Chapter 9 ppt
... seasoned water and wastewater operator knowsthat flow measurement is an essential part of water and wastewater treatment. Unit processes are designed for spe-cific flow levels, and process adjustments ... 2003 by CRC Press LLC 288 Handbook of Water and Wastewater Treatment Plant OperationsIn another type of measuring device, the problem mightbe indicative of grease buildup on magnetic meter ... related to the rate of flowthrough the pipe. It is often used in wastewater streamssince the smooth entry allows solids to be swept throughinstead of building up as it would in front of an orifice....
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Handbook of Water and Wastewater Treatment Plant Operations - Chapter 15 ppt
... quality of the existing water supply. Surface wateris also generally softer (not mineral-laden), which makesits treatment much simpler. © 2003 by CRC Press LLC 442 Handbook of Water and Wastewater ... made up of a combination of solid mate-rial such as rock and gravel and open spaces called pores.Regardless of the type of aquifer, the groundwater in theaquifer is in a constant state of motion. ... of water in an aquifer dependsupon the amount of space available between the variousgrains of material that make up the aquifer. The amount of space available is called porosity. The ease of...
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Tài liệu TREATMENT OF EATING DISORDERS ppt
... presented on the use of yoga in the treatment of eating disorders at the Interna-tional Association for Eating DisorderProfessionals Conference and the University of Florida’s Professional Development ... in the treatment of eating disorders, chronic illness, and thepsychological aspects of Lyme Dis ease.Beth Hartman McGilley, PhD, FAED,Associate Professor, University of KansasSchool of Me ... practice, it is often thesecomorbid factors, including depression,anxiety, and post-traumatic stress disorder,that dominate the process of therapeuticengagement. The process of engagement isknown...
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- process of wastewater treatment plant
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