JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objective

To develop a conceptual outlook and mathematical modelling skills related to

groundwater pollution.

Course Outcome:

• Basic knowledge on Geo-Hydrological system.
• Mathematical modelling of pollutant transport and reactions in the geo-hydrological domain

UNIT - I

Introduction: The Hydrological Cycle, Ground water Contamination and Transport, Ground Water remediation, Sources and Types of Ground water contamination Introduction, Under Ground storage Tanks, Landfills, surface impoundment’s, Waste disposal Injection wells Septic systems, Agricultural wastes, land applications, Radioactive contamination, other sources of contaminates, Data-collection methods: Introduction, Geological data acquisition, and hydrologic data acquisition, acquisition of soil and ground water quality data.

UNIT - II

Contaminant transport Mechanisms: Introduction, advection processes, diffusion and dispersion processes, Mass- transport equations, one dimensional model, Governing flow and transport equation in two dimensions, semi-analytical methods, test for dispersitivity, Natural gradient field test for dispersion.

UNIT - III

Sorption and other Chemical Reactions: Introduction, the concept of sorption, factor influencing sorption, sorption Isotherm, Hydrophobic theory for organic contaminants, sorption effects on fate and transport of pollutants, Estimation of sorption, Redox reaction, Hydrolysis, volatilization, Acid-Base reaction, Ion exchange, dissolution and precipitation of solids, complication reaction, models incorporating chemical reactions.

UNIT - IV

Flow and Transport in the Unsaturated Zone: Capillarity, soil-water characteristics curves, unsaturated hydraulic conductivity, governing equation for unsaturated flow, measurement of soil properties.

UNIT - V

Nonaqueous- Phase Liquids: Introduction, Types of NAPLs, NAPL transport- General processes, NAPL transport- computational methods- Fate of NAPLs in the sub surface, characterizing NAPLs at remediation sites.

TEXT BOOK:

• 1. Ground water contamination (Transport and remediation) - Phlip. B. Bedient, Hanadi. S. Rifai & Charles. J. Newell Publishers: Prentice Hall. M. Tech – I Year – II Sem. (Envir. Engg.)