用英文改写这段话：“which indicated that the SBC-MEAEC system is highly efficient and energy-saving, even economically reaching China’s surface water class III phosphate standard (0.2 mg/L)。 “

The results showed that the SBC-MEAEC system possesses high efficiency and energy-saving properties, and can even achieve China's Class III surface water phosphate standard (0.2 mg/L) in an economically viable manner.