Exhaust treatment system and method

An exhaust dedusting system, including a dedusting electric field device and a water removing device, wherein the dedusting electric field device includes a dedusting electric field cathode and a dedusting electric field anode, wherein the dedusting electric field cathode and the dedusting electric field anode are used to generate an ionization dedusting electric field, and the water removing device is configured to remove liquid water before the electric field device entrance, when the exhaust temperature or the engine temperature is lower than a certain temperature, the water removing device removes liquid water in the exhaust.

An exhaust dedusting method, including the following step:

• removing liquid water in the exhaust when the exhaust has a temperature of any one of the following:
• a temperature of lower than 100° C., a temperature of ≤90° C., a temperature of ≤80° C., a temperature of ≤70° C., and then performing ionization dedusting.