公开(公告)号：US20170121194A1

公开(公告)日：2017-05-04

申请号：US15358107

申请日：2016-11-21

Applicant: HOHAI UNIVERSITY

Inventor： Peifang WANG ,  Chao WANG ,  Jin QIAN ,  Jun HOU ,  Lei RAO ,  Ziyun BAO

IPC: C02F3/10 ,  E02B11/00 ,  B01D39/20 ,  C02F1/00 ,  C02F1/74

CPC classification number: C02F3/101 ,  B01D39/2068 ,  C02F1/004 ,  C02F1/285 ,  C02F1/74 ,  C02F2101/105 ,  C02F2101/16 ,  C02F2101/306 ,  C02F2103/06 ,  C02F2201/002 ,  C02F2209/42 ,  C02F2303/14 ,  C02F2303/24 ,  E02B11/00

Abstract: A device for purifying first-stage drainage effluents from dry croplands, the device including: a) a plastic corrugated pipe including an upright segment and a horizontal segment, the upright segment comprising plastic mesh openings; b) a steel wire mesh box filled with stuffing pellets including biological carriers; and an inspection cover. The plastic mesh openings are disposed at one end of the upright segment, the other end of the upright segment is connected to one end of the horizontal segment, and the other end of the horizontal segment is connected to the steel wire mesh box. The upper surface of the upright segment of the plastic corrugated pipe is lower than the upper surface of the field ditch, and the lower edge of the plastic mesh openings is higher than the bottom surface of the field ditch.