A system and method for nitrogen and phosphorus removal by anaerobic ammonium oxidation

Abstract

The invention provides an anaerobic ammonium oxidation nitrogen and phosphorus removal system, comprising: an integrated structure composed of an independent anaerobic unit and an aerobic unit; the anaerobic unit is equipped with a stirring device and a first mud-water separation device , the upper part is provided with a first water inlet; the first mud-water separation device is provided with a first outlet pipe communicating with the aerobic unit; the aerobic unit is provided with an oxygenation device and a second mud-water separation device, and the upper part A second water inlet is provided; the second mud-water separation device is provided with a second outlet pipe; a return device connected with the second outlet pipe; the return device is provided with an external drainage outlet and a return water outlet; the return The flowing water outlet is communicated with the first water inlet; the aerobic blower is respectively connected with the stirring device and the oxygenation device. The anaerobic ammonium oxidation denitrification and phosphorus removal system provided by the present invention can realize sustainable and energy-saving biological nitrogen and phosphorus removal, and has excellent total nitrogen removal effect and good stability of effluent water quality.

Description

technical field [0001] The invention relates to the technical field of water treatment, and more particularly, to an anaerobic ammonia oxidation denitrification and phosphorus removal system and method. Background technique [0002] With the increasingly severe situation of water pollution, the emission standards for denitrification and phosphorus removal are becoming more and more stringent, the treatment cost of sewage treatment plants has risen sharply, and the pressure on operating costs has risen sharply. Enterprises in the industry are facing bottleneck breakthroughs that need to be upgraded in sewage treatment technology. In particular, some special wastewater that restricts the use of low operating costs by enterprises cannot directly use biological treatment technology, which greatly increases the production cost of enterprises. Therefore, the market demand for breakthroughs in sewage treatment technology has become particularly urgent. [0003] In recent years, d...

AI Technical Summary

Problems solved by technology

[0004] However, the anaerobic ammonium oxidation process in the prior art is limited by the treatment device, and there are problems such as the difficulty in controlling the stable production of the electron acceptor nitrite nitrogen required for anaerobic ammonium oxidation and the difficulty in continuous accumulation. The problem of enrichment and separation, therefore, the removal effect of total nitrogen is average, and the stability of effluent water quality is poor

Images