The invention relates to a landfill
leachate wastewater treatment system and a process thereof. The
system comprises a collecting well, an adjusting tank, a filter, a multi-stage anoxia / aerobic
pool and
membrane bioreactor comprehensive
treatment system, an advanced catalytic oxidization
tower and a biological carbon filter. The treatment process has the following flows that:
wastewater enters the adjusting tank to undergo the adjustment of
water quality and water quantity in the adjusting tank; then, the
wastewater enters the filter, the water out of the filter enters the multi-stage anoxia / aerobic
pool and
membrane bioreactor comprehensive
treatment system to undergo biochemical treatment in the
system, organic matters and
ammonia nitrogen are removed, and the water out of the
system enters the catalytic oxidization
tower; in the presence of a catalyst, organic matters in the wastewater are oxidized by
ozone, and the biodegradability is improved; and the water after catalytic oxidization enters the carbon filter, residual pollutants are further removed through cooperation of the aerobic
oxidative degradation of a biomembrane on a filling material in the filter and the absorption of
active carbon, and then the water out of the carbon filter can meet the national first grade
emission standard or the emission standards of related industries.