Method and system for treating wastewater containing methyldiethanolamine

The invention relates to the field of wastewater treatment, in particular to a treatment method and system for wastewater containing methyldiethanolamine. The treatment method of the methyldiethanolamine-containing wastewater provided by the invention comprises the following steps: 1) filtering the methyldiethanolamine-containing wastewater, and carrying out thermal cracking on filtrate to obtain thermal cracking gas; and 2) mixing the thermal cracking gas and the raw gas, and sequentially carrying out ammonia water spraying, water spraying and electrical tar precipitation for purification treatment to obtain purified gas. According to the treatment method of the methyldiethanolamine-containing wastewater, provided by the invention, the methyldiethanolamine-containing wastewater can be simply and efficiently treated, effective components of the methyldiethanolamine-containing wastewater can be fully utilized, and the methyldiethanolamine-containing wastewater is converted into purified coal gas after being pu