Waste liquid treatment system

A waste liquid treatment system comprising:

• a heat retaining/storage tank section that stores waste liquid and retains heat of the waste liquid;
• an atomization chamber section that performs at least one of atomization and gasification of the waste liquid fed from the heat retaining/storage tank section and produces a preprocessed matter in a form of mist or vapor gas;
• a heating/decomposition chamber section having an inner space through which the preprocessed matter passes, the inner space of the heating/decomposition chamber being maintained substantially in an oxygen-free low pressure atmosphere lower than atmospheric pressure and at a thermal decomposition temperature capable of thermally decomposing chemical substances contained in the preprocessed matter fed from the atomization chamber section, the heating/decomposition chamber producing decomposed exhaust gas;
• a rapid cooling section that rapidly cools the decomposed exhaust gas fed from the heating/decomposition chamber section and produces exhaust gas;
• and
• a vacuum pump section that draws the preprocessed matter from the atomization chamber section into the rapid cooling section via the heating/decomposition chamber section.