An effective pre-drainage system in a limited area that has a high water head and huge inflow is important to prevent flooding accidents during subsea tunnelling.
This process is highly effective with low operating expense; it might be useful to treat similar wastewater with high organic concentration and fluctuant inflow.
Total effective rate was respectively 97.1% and 83.3%. REG's inflow time, amplitude, turning point height rate, repulse wave, wave type and amplitude dispatch all had obvious changes.