Into a bowl, mix together ginger, soy sauce, chili sauce, ketchup, brown sugar, garlic salt and 1/3 cup clam juice, until smooth. Reserve. Preheat a wok with 2 tablespoons of the oil. Coat scallops with cornstarch and add to the wok. Stir-fry scallops for approximately 1 minute and sprinkle with salt and pepper, to taste. Stir in reserved ginger mixture cook for 1 to 2 minutes more. Remove scallops from sauce arrange on a serving dish. Reserve the sauce separately.
Heat the remaining 1 tablespoon oil in the wok and add the carrot sticks, sweet pepper strips, broccoli florets and chopped onions for 4 to 6 minutes or until brown. Season with salt and pepper, to taste. Keep warm, in the wok.
In another wok or deep pan, deep-fry rice noodles in 2 cups hot oil, for 3 minutes. Drain noodles. Arrange noodles in a bowl or on a plate, top with cooked vegetables and finish with scallops. If desired, mix a little more clam juice to the sauce, before pouring over the scallops and noodles. Serve with lemon slices.