Irrigation sewage activated iron - nitrogen and phosphorus removal reinforcing anaerobic microorganisms coupling means

The present invention is one kind of irrigation sewage activated iron - nitrogen and phosphorus removal anaerobic microorganisms coupling reinforcing means is provided by an anaerobic filter bed separator tank sequentially, active iron - coupling anaerobic reaction vessel, contacting the aeration tank, the settling tank and disinfecting tank, and the aeration means and the backwash means; anaerobic filter bed inlet communicating groove communicating active iron anaerobic filter bed tank defection - coupling anaerobic reaction vessel, the activity of the iron - coupling an anaerobic reaction vessel trans after the aeration tank after contact with water in communication, the contact aeration tank defection communication sedimentation tank, sedimentation tank communicating groove sterilization, disinfection outlet tube communicating groove; contacting the bottom of the aeration tank is provided with aeration means; said contact aeration tank active iron and - the coupling between the anaerobic reaction vessel provided with a reflux device and a backwash device. Advantages: simple and compact structure, is easy to install manufactured using low cost; self buried, no floor space for rural dispersion treatment of sewage; purifying nitrogen and phosphorus removal effect is remarkable.