Underground biological and ecological integrated treatment device for wastewater of highway service area

The invention provides an underground biological and ecological integrated treatment device for wastewater of a highway service area. The underground biological and ecological integrated treatment device comprises five functional zones which are respectively a filler degradation zone, a denitrification zone, a micro-aeration zone, a soil degradation zone and a water discharge zone, and the underground biological and ecological integrated treatment device comprises a water inlet pipe, a disc water distributor, a bottom partition plate, a middle partition plate, an isolation plug component, a micropore aeration disc, a cylinder, a circular ring barrier wall, a water discharge cylinder, and a water outlet pipe. The whole device is divided by the bottom partition plate and the middle partitionplate into an upper part, a middle part and a lower part, the filler degradation zone is at the lower part, the denitrification zone is at the middle part, and the micro-aeration zone, the soil degradation zone and the water discharge zone are at the lower part. The arrangement of the depth space of the device greatly reduces the occupied area, the circular root system barrier wall increases thecontact area of the wastewater and a root system, the denitrification functional zone achieves efficient denitrification and reduces the influence of the low temperature, and the underground biological and ecological integrated treatment device is an important pusher in the environmentally friendly treatment of the wastewater of the highway service area, like pollution reduction, energy conservation, consumption reduction, environment beautifying and the like.