Waste water treatment of dye by hydrodynamic cavitation process

Presented by- Mr.Sangle Onkar Somnath Mr.Dhirde Mahesh Balasaheb Mr.Kank Deepak G

WASTE WATER TREATMENT OF DYES BY HYDRODYNAMIC CAVITATION PROCESS 1Content Introduction Geometric Optimization Of Hydrodynamic Cavitating Device Experimentation Results And Discussion Conclusion2Introduction Cavitation is defined as the phenomena of the formation ,growth and subsquent collapse of microbubbles or cavities occurring in extremely small interval of time releasing large magnitudes of energy. Hydrodynamic Cavitation One of the alternative techniques for the generation of cavitation is the use of hydraulic devices where cavitation is generated by the passage of liquid through constriction such as valve,orifice plate,venturi etc.Diagram of waste water treatment plant

Geometric Optimization Of Hydrodynamic Cavitating DeviceThe efficiency of the hydrodynamic cavitation is very much dependent on the number of cavitational events (number of cavities) occrring inside a device.The dimensions of cavitating devices used for hydrodynamic cavitation process is given below

Dimension OF Orifice Plate Orifice used having no. of holesDimension used for orifice hole 1 2mm 5 1mm EXPERIMENTATIONFig.Showing model of hydrodynamic cavitation process

RESULTSFig illustrate COD concentration with time TIMEPlate 1 mm holePlate 2 mm hole 015001500301445145860122013309010321046Fig.Illustrate TOC with TimeTIMEPlate 2 mmPlate 1 mm092.1892.181060.6562.252046.5358.634034.2645.36ConclusionFrom this project we conclude that when the diameter of orifice plate is small as then better result can be obtained.Hydrodynamic cavitation has higher capacity for sludge disintegration than any other waste water treatment technologies apllied alone.A maximum of 50 % of the sludge was solubilised after 1 hours treatment.