SEWAGE TREATMENT Sewage is a mixture of domestic and industrial wastes. It is more than 99% water‚ but the remainder contains some ions‚ suspended solids and harmful bacteria that must be removed before the water is released into the sea. The treatment of wastewater is divided into three phases: pretreatment‚ primary treatment and secondary treatment. Pretreatment Large solids (i.e. those with a diameter of more than 2cm) and grit (heavy solids) are removed by screening. These are disposed of in
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which metal is being used‚ the size and scale of the component‚ the finish required‚ the complexity of the structure etc. Within this report I will analyse casting methods‚ there advantages and disadvantages‚ defects that can take place‚ and what treatments are available. Common casting defects and there possible causes; There are many different types of casting methods used within jaguar‚ and with all these different methods come different kinds of defects. Defects can be the result of anything
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Beat the heat with aircon repair Summer times can be difficult to manage in the hot regions and this calls for a nice chilled breeze of the air conditioner. While this may be the best prospect at this time‚ the problem comes with the appliance itself. Air conditioners just like any other electronic appliance are prone to problems and malfunctions. The malfunctions in this case can be quite bad considering how complicated the appliance is and this means that it requires professional help and not a
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Conclusions The purpose of this experiment was to find the relationship between a substance’s specific heat and its atomic weight. In the lab‚ the substances with the higher atomic weights had less specific heat. From this‚ we can conclude that specific heat and atomic weight have an inverse relationship‚ meaning as one decreases the other increases. The reason for this is because if atoms are small‚ or light‚ they have the ability to pack tightly together‚ leaving almost no space between them
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Title: Specific Heat Capacities of Metals Experiment Date: 3/28/2012 Report Date: 4/4/2012 Purpose: The purpose of the lab is to measure the specific heat capacities of aluminum‚ steel and brass. Theory: The amount of heat (ΔQ) required to change the temperature of an object is proportional to the mass (m) of the object and the temperature change (ΔT) of the object. ΔQ= cmΔT where c is called as the specific heat capacity of the material. In the calorie units system the unit of quantity
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said that this is a method of heat treatment to strengthen the material‚ shape and improve the ability of the engine from the material. The process of heating and cooling is done on extremes of temperature to get desired results. It is very useful to the manufacturing process‚ but the heat treatment is not only useful for manufacturing processes but also to improve the quality‚ performance and characteristics of the product. It contains the process of heat treatment including heating by means of
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affected by the time and the temperature of the age hardening‚ so as the samples are age hardened longer and in a higher temperature‚ the hardness of them increases accordingly. Description of theory Age or Precipitation hardening is a widely used heat treatment method that is done to raise the strength (including the yield and ultimate tensile strength) of malleable materials such as Aluminum. In precipitation hardening‚ the formation of a very fine and uniformly distributed second phase particles in
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Heat Transfer Lab report Free & Forced Convection Heat Transfer Mahmood Mohsin AL-Khusaibi 85135 Amur Sultan Al-Habsi 86260 Rashid Nasser Al Shabibi 85362 Aim: The objective of this experiment to investigate the use of extended surface to improve heat transfer through surfaces. In addition‚ another target is to demonstrate the effect of the fluid speed on the heat transfer by convection. Introduction: Heat transfer by convection is one of three heat transfer
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Sewage treatment The objective of sewage treatment is to produce a disposable effluent without causing harm to the surrounding environment and prevent pollution.[1] Sewage treatment‚ or domestic wastewater treatment‚ is the process of removing contaminants from wastewater and household sewage‚ both runoff (effluents) and domestic. It includes physical‚ chemical‚ and biological processes to remove physical‚ chemical and biological contaminants. Its objective is to produce an environmentally-safe
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main purpose of the experiment is to investigate heat transfer processes using the tubular heat exchanger which is a specific type of heat exchangers. Moreover‚ the primary goals are to compare the two types of flow cases‚ co-current flow and countercurrent flow as well as taking the analyses of their temperature changes through the graphical curves and observing the heat transmission via the operating apparatus. The working principles of the tubular heat exchanger is analyzed and the fluid temperate
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