PREDICTING PRESSURE FILTER NET SOLIDS YIELD USING BUCKINGHAM-Π METHOD OF LMT DIMENSIONAL ANALYSIS.
Journal Title: International Journal of Advanced Research (IJAR) - Year 2018, Vol 6, Issue 7
Abstract
A model for predicting Pressure filter Net Solids Yield has been derived using Buckingham-π method of LMT Dimensional Analysis. It was observed in previous studies that addition of large amounts of chemical conditioners could alter the initial solids content of the original slurry to be filtered. Increment in the initial solids content also occurs when skeleton builders are mixed with chemical conditioners. The filter cake yield of such slurry would definitely be higher while the resulting specific resistance would be lower. To account for these additions, it is important that a valid filter cake yield model with a correction factor, F be derived. In furtherance of the above, a new equation expressing the filter cake yield as net sludge solids was derived with further incorporation of the cake compressibility coefficient. It was established that filter net solids yield is directly proportional with the operating pressures, initial sludge solids content, and conditioner dosages while being inversely proportional to specific resistance to filtration, pressing time, sludge viscosity and sludge compressibility . The difference between the actual cake yields and the net solids yield accounts for the quantity of the ferric chloride coagulant used in this study. The new equation enables performance of a pressure filter (Filter Press) to be predicted from a simple laboratory determination of cake yields. Moreover, curves derived from the model show how increasing ferric chloride dosage from 11.87% to 22.61% increased net solids yield from 2.4254g/Cm2.S to 2.7052g/Cm2.S while reducing specific resistance from 1.7372 x 1010Cm/g to 1.5940 x 1010Cm/g. The optimum dosage from the graph to attain acceptable filtrate quality was 19.61% at an operating pressure of 5098.58g/Cm2. Also, considering the differences in the parameters tested, it is significant that they all responded similarly when compared with previous research works.
Authors and Affiliations
Onwe John Ituma, Ademiluyi Joel.
Keywords
Related Articles
- EP ID EP366548
- DOI 10.21474/IJAR01/7440
- Views 36
- Downloads 0
AN ASSESSMENT OF CHALLENGES FACED BY LIVELIHOOD & GROWTH ORIENTED ENTERPRISES IN AKSUM TOWN.
Livelihood and Growth oriented enterprises are part in SMSE?s. Micro, small entrepreneurs eagerly looking for new shines through these enterprises but most of the micro, small level entrepreneurs dreams are roaming in th...
THE VALIDITY AND RELIABILTY STUDY OF RACIAL ETHNIC HARASSMENT AND DISCRIMINATION AND DIVERSITY ASSESSMENT SCALES IN TURKEYS POPULATION
This study may be claimed to be the first step towards investigating the workplace discrimination specific to Mersin in the ?ukurova region in Turkey. In this paper, the Racial/Ethnic Harassment and Discrimination scale...
A STUDY OF EVALUATION OF VARIOUS FACTORS OF INFERTILITY BY DIAGNOSTIC LAPAROSCOPY AT TERTIARY HOSPITAL.
Background: Primary infertility is defined as inability to conceive where there is no previous pregnancy. Secondary infertility is one in which previous pregnancy has occurred regardless of the outcome. There are male as...
PREDICTION OF DIFFICULT LARYNGOSCOPY BY ULTRASOUND GUIDED VALUATION OF ANTERIOR NECK SOFT TISSUE THICKNESS.
Background : The major responsibility of the anaesthesiologist is to provide adequate ventilation to the patient. Most vital element for this is the airway. Difficulties in optimal airway management can lead to serious a...
THE INFLUENCE OF INSTRUCTIONAL SUPERVISION BY QUALITY ASSURANCE AND STANDARDS OFFICERS ON TEACHERS INSTRUCTIONAL COMPETENCES IN SCHOOLS
The primary function of external instructional supervision of teachers is to establish the status of instruction among teachers and consequently improve it. The gist of this study was to examine the influences that instr...