alum coagulant

  • Coagulation and Flocculation in Water and …

    Frequently, it is known as filter alum. In water purification, a mixture of 48 percent filter alum in a water solution is combined with the raw incoming water at a rate of 18-24 milligrams per liter. Alums are found in many household products such as deodorant and baking powder. However, in water purification processes it is as a coagulant. A coagulant binds extremely fine particles suspended ...

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  • Flocculants and Coagulants | ChemTreat, Inc.

    Inorganic coagulant treatment is particularly effective on raw water with low turbidity (total suspended solids concentration) and will often treat this type of water when organic coagulants cannot. Once added to water, inorganic coagulant chemicals react with the alkalinity and hydrate to form metal (aluminum or iron) hydroxide precipitates, which act as a sweep-floc mechanism.

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  • coagulant : définition de coagulant et synonymes de ...

    COAGULER (v. a.) [ko-a-gu-lé]. 1. Faire éprouver la coagulation. • L'esprit de vitriol ronge de certains mixtes et en coagule d'autres comme sont le sang et le lait (CHARRAS Pharm. 1re partie, 5) • L'eau y est [dans les pays chauds] d'un usage admirable ; les liqueurs fortes y coaguleraient les globules (MONTESQ. Esp. XIV, 10). 2. Se coaguler, v. réfl. Être coagulé. Le sang extr

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  • Aluminium Sulphate Liquid - Primary Coagulant

    Aluminium sulphate (liquid), a primary coagulant for industrial effluent treatment including wastewaters from food, dairy, oil, textiles and chemical industries. Accepta 8302 is a primary coagulant based on trivalent aluminium and is virtually iron-free and is used for the treatment of potable water as well as process water, and sewage and industrial effluents...

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  • Determination of Optimum Coagulant Content in …

    Alum is the most widely used coagulant. Nowadays coagulant aids are also being used in conjunction with alum to reduce alum dose required. When a coagulant is added to water containing turbidity, flocs will be formed. Floc formation depends upon the quantity of coagulant added (coagulant dose), pH, temperature, flocculation time etc. The test is supposed to be conducted as a routine ...

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  • Water Treatment Coagulation | Water Treatment | …

    The choice of the coagulant to be used for any particular water should preferably be based upon experiment on different coagulants. Alum. One of the earliest, and still the most extensively used coagulant, is aluminum sulfate (Al/S04)3 ·14 HP), also known as alum. Alum is acidic with light tan to grey in color and available in blocks, lumps and powder with a density of 1000 -1100 kg/ m3 and ...

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  • Calculation of Alum dosing rate in wastewater …

    02/05/2018· Alum is a best and cheap coagulant used for coagulation process. Coagulation-flocculation is a chemical water treatment technique typically applied prior to sedimentation and filtration (e.g ...

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  • Effectiveness of Using Natural Materials as a …

    Coagulation-Flocculation plays a significant role in drinking water treatment. Laboratory experiments were carried out in order to assess the effectiveness of using Conocarpus Leaves Solution (CLS) as a natural coagulant in conjunction with the synthetic chemical represented by Alum in the water purification. Biological test was carried out to confirm that these leaves are not toxic, followed ...

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  • Aluminium Sulphate Liquid - Primary Coagulant

    Aluminium sulphate (liquid), a primary coagulant for industrial effluent treatment including wastewaters from food, dairy, oil, textiles and chemical industries. Accepta 8302 is a primary coagulant based on trivalent aluminium and is virtually iron-free and is used for the treatment of potable water as well as process water, and sewage and industrial effluents...

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  • On the importance of pH value in coagulation | …

    Effect of pH on the speciation transformation of alum and PACl of different basicities is well described by Wang et al.. It ... In the case of coagulants that consume alkalinity, and thus might initiate reduction in alkalinity and pH value (e.g., coagulants based on iron and aluminium, including pre-hydrolysed coagulants), the resultant pH is dependent on the dosage of the coagulant applied ...

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  • Coagulation (water treatment) - Wikipedia

    The dose of the coagulant to be used can be determined via the jar test. The jar test involves exposing same volume samples of the water to be treated to different doses of the coagulant and then simultaneously mixing the samples at a constant rapid mixing time. The microfloc formed after coagulation further undergoes flocculation and is allowed to settle.

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  • Étude d'un coagulant organique naturel pour le traitement ...

    similar to that of alum for the treatment of surface waters, with the advantage that the pH has no impact on it. Like alum, it can be used in waste water treatment to reduce Chemical Oxygen Demand (COD), Suspended Solids (SS), and Biological Oxygen Demand. Unlike other natural organic coagulants such as Moringa, Tanflloc is seen as the organic coagulant which might be a suitable alternative to ...

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  • (PDF) Comparison of four kinds of coagulants for …

    At higher doses, however, they observed that ferric coagulant removed more DOC than alum, Being able to predict the amount of DOC in treated water can be useful for such actions as designing a new ...

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  • Différence entre la coagulation et la floculation ...

    L’un des coagulants les plus couramment utilisés est l’alun (Al 2 (ALORS 4) 3 14H 2 O) La coagulation est un phénomène important dans la coagulation du sang. Par conséquent, la coagulation est communément appelée coagulation. Les effets d'un coagulant peuvent être inversés par l'utilisation d'un anticoagulant. Ces anticoagulants sont souvent utilisés pour soulager les caillots ...

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  • Coagulation and Flocculation in Water and …

    The use of alum as a coagulant by the Romans was mentioned in around 77 AD. By 1757, alum was being used for coagulation in municipal water treatment in England. In modern water treatment, coagulation and flocculation are still essential components of the overall suite of treatment processes – understandably, because since 1989 the regulatory limit in the US for treated water turbidity has ...

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