Assessment of factors affecting the efficiency of flocculation. by H. Nadir Erbil Download PDF EPUB FB2
The flocculation of coal preparation plant tailings is an established technology, and the scientific basis of flocculation is well understood, Nevertheless, conditions specific to the preparation plant affect the efficiency of the process. The sedimentation rate obtained with flocculated tailings depends on the molecular size of the by: Assessment of factors affecting the efficiency of flocculation Author: Erbil, H.
Nadire Awarding Body: University of Birmingham Current Institution: University of Birmingham Date of Award: Availability of Full Text. The factors that affect the efficiency of harvesting microalgae by ultrasound and electro-flocculation methods is described in Table 2.
In the ultrasonic field, the microalgae cells tend to aggregate into the knots of the ultrasonic wave, forming by: 5. Factors affecting flocculation performance of synthetic polymer for turbidity control January Journal of Agricultural Chemistry and Environment 02(01) of flocculation efficiency η at constant shear rate.
The flocculation amplitude can be taken as a measure of floc size. The characteristic time of flocculation can be taken as a measure of flocculation fastness. Fines, the fiber fragments passing the mesh pores of sizes less than 76 µm , were used to determine flocculation.
Factors affecting the flocculation of bacteria by chemical additives. McGregor. Department of Chemical Engineering, Cornell University, Ithaca, New York Search for more papers by this Assessment of factors affecting the efficiency of flocculation.
book. Finn. Department of Chemical Engineering, Cornell University, Ithaca, New York Efficiency of Coagulation and Flocculation Process« At the end of experiments, paired t-test analysis was used to determine the mean difference between the efficiency of removing contaminants under study by coagulation, flocculation process, and.
Resource Book. T H I C K E N I N G 2 assessment given to you by your supervisor. The increase in flocculation efficiency realised in high rate thickeners may increase in a bulk settling rate 2 to 10 times over that obtained in a conventional thickener, thus reducing the.
Design contact times for flocculation range from 15 or 20 minutes to an hour or more, and flocculation requires careful attention to the mixing velocity and amount of mix energy. To prevent floc from tearing apart or shearing, the mixing velocity and energy are usually tapered off as the size of floc increases.
is a platform for academics to share research papers. Study on the factors affecting coagulation and flocculation in treatment of industrial effluents I.G. Bantcheva Department of Chemical Engineering, University of Durban- Westville, South Africa Abstract The introduction of wastewater treatments increases the plant cost; therefor any attempt to improve their efficiency is valuable.
Factors affecting coagulation and flocculation Process: Wastewater from various sources need different coagulants, and working conditions for various types o. The factors affecting flocculation have been extensively studied and frequently reviewed (e.g.
Henderson and Wheatley, a; Gregory, ;Hocking et al., ;Fellows and Doherty, ); while. Therefore, a series of flocculation experiments under different conditions was evaluated for better polymer clarification efficiency.
Various factors such as flocculant dose, end-over-end inversion of a cylinder, and soil-water properties (pH, NaCl, organic matter) were studied. Coagulation and Flocculation in Water and Wastewater Treatment provides a comprehensive account of coagulation and flocculation techniques and technologies in a single volume covering theoretical principles to practical applications.
Thoroughly revised and updated this new edition has been progressively modified and increased in scope to cater for the requirements of. Aluminium, iron III, lead, copper, and zinc ions formed complexes with the carboxyl groups on the polymer, resulting in zero flocculation activity. Nonionic polyacrylamides were unaffected.
Viscosity–aging of polyacrylamide solutions was observed over a period of several months, but was insufficient to affect the flocculation activity. In this work, some process factors were found having significant effects on fines flocculation.
Increases in CF to PEO ratio at constant PEO enhanced the bridging bonds, causing increases in flocculation initial rate (efficiency), amplitude (floc size), and fastness (a decrease in characteristic time).
Further efforts should be made to improve flocculation efficiency of starch as flocculant to take place of complexes of polyacrylamide and Al 2 (SO 4) 2.
References Amuda OS, Amoo IA, Ajayi OO () Performance optimization of coagulant/flocculant in the treatment of wastewater from a beverage industry. Author(s) eva. Abstract.
Study on the factors affecting coagulation and flocculation in treatment of industrial effluents I.G. Bantcheva Department of Chemical Engineering, University of Durban- Westville, South Africa Abstract The introduction of wastewater treatments increases the plant cost; therefor any attempt to improve their efficiency is valuable.
polymer properties affect flocculation perform- ce. Therefore, a series of flocculation experi- nts under different conditions was evaluated for bet- ter polymer clarification efficiency. Various fac- tors such as flocculant dose, end-over-end in- version of a cylinder, and soil-water properties (pH, NaCl, organic matter) were studied.
The. Factors Affecting Flocculation Formation of flocs or flakes during flocculation is a complex process that depends on several factors. A few important factors are as follows: Physical (e.g., Turbulence) Chemical (e.g., Ionic concentration) Biological (Bacterial populations and extracellular polymeric material).
Uses of Flocculation. These projects have resulted in the development of a range of research tools and techniques to address flocculation and thickening issues. Laboratory and plant studies have focused on how key factors, such as mixing intensity, mixing duration and solids concentration, affect flocculation efficiency and, hence, thickener performance.
Several factors can affect yeast flocculation. The first factor is the genetic background of a strain. Flocculin proteins are encoded by members of the FLO group of genes [23,56]. The genetic background (nature effects) with regard to FLO genes varies greatly amongst various types of brewer’s yeast (ale or lager) and other strains.
The report is concentrate on the investigation of factor affecting coagulation and flocculation. The analysis is profoundly focusing on the raw water at Batang Samarahan, Sg. Sarawak and Sg. Sarawak Kiri. The effective and efficiency of coagulation and flocculation is interrelated on many factors.
Previous studies indicated that the pH, alkalinity, turbidity, types and amount of coagulant and. processes and actions affect water quality, which in turn requires an understanding of risk assessment. This volume is intended to provide guidance on using risk assessment when selecting appropriate treatment processes, to ensure the production of high quality drinking-water.
It is hoped that it will be. A study of the factors influencing customer satisfaction and efficiency in contact centers: the combined effect Marketing Master's thesis Terhi Rekilä. Using turbulent pipe flow to study the factors affecting polymer-bridging flocculation of mineral systems.
International Journal of Mineral Processing, 87 (3–4), 90 – Pearse, M. water process and chemical industries. The book emphasizes principles (theory) and applications (practice).
It serves as a companion to the book on design, AWWA–ASCE Water Treatment Plant Design; the 5th edition is in preparation with expected publication in late Environmental Nanotechnology is the first book to assist you in both understanding the properties of new nanomaterial-centered technology and assessing the potentially harmful effects these materials may have on the environment.
The rapid pace of innovation in nanotechnology has posed a greater risk over health and environment demanding a need for responsible development, relevant policy. top twelve factors affecting efficiency is compiled. A survey consisting of the ten factors and a brief explanation of each was sent to contractors in Central Maharashtra region of India which consist of industries and has boom in construction.
Which they were asked to apply a weight to each of the twelve factors, totaling %. Results of this. Contents 1. Introduction page 1 2. Process Description page 2 3. Factors affecting the efficiency of electrocoagulation process page 3 Electrode arrangement page 3 Type of power supply page 4 Current density page 4 Concentration of anions page 5 Effect of initial pH page 5 Electrode material page 5 4.Coagulation, also known as clotting, is the process by which blood changes from a liquid to a gel, forming a blood potentially results in hemostasis, the cessation of blood loss from a damaged vessel, followed by mechanism of coagulation involves activation, adhesion and aggregation of platelets, as well as deposition and maturation of fibrin.EFFICIENCY AND EFFECTIVENESS OF THE PROCUREMENT FUNCTION Patrick Kakwezi and Sonny Nyeko Kakwezi is a Lecturer in Department of Procurement and Logistics re University Business School, P.O.
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