No, it is not possible to melt ice below 0 degrees Celsius using a huge amount of 0 degrees Celsius water alone. The melting point of ice is precisely 0 degrees Celsius (32 degrees Fahrenheit) at normal atmospheric pressure. When ice is exposed to temperatures below its melting point, it absorbs heat from the surroundings in an attempt to warm up and reach its melting point.
If you were to introduce a large quantity of 0 degrees Celsius water to ice below 0 degrees Celsius, the ice would cause the water to cool down. This process is called heat transfer by conduction. As the water comes into contact with the ice, heat energy would flow from the water to the ice, causing the water to drop in temperature. Consequently, the ice would gain heat energy from the water and warm up towards its melting point of 0 degrees Celsius.
In this scenario, the heat transfer would continue until the ice and water reach thermal equilibrium, where both would stabilize at 0 degrees Celsius. The ice would not melt below its melting point without an external heat source because it requires additional energy input to overcome the latent heat of fusion and transition from a solid to a liquid state.
To melt ice below 0 degrees Celsius, you would need to provide an external heat source, such as raising the temperature of the surroundings or applying heat directly to the ice.