Enhanced dephosphorization reactor

Abstract

The invention discloses an enhanced dephosphorization reactor. The reactor body comprises, from bottom to top, a water distribution zone, a reaction zone and a precipitation zone in sequence, wherein the lower part of the water distribution zone is equipped with a returned sludge hopper, a mixing chamber is arranged at the upper part of the returned sludge hopper and a jet water inflow device is arranged at the center of the returned sludge hopper; the reaction zone is equipped with, from inside to outside, a first reaction zone, a second reaction zone and a third reaction zone in sequence, and a chemical agent inflow pipe is located at the lower part of the first reaction zone; and the precipitation zone is equipped with, from bottom to top, a sludge discharge port, a precipitated sludge hopper, a sludge precipitation chamber, an overflow weir and a water outlet in sequence, and a saw-toothed overflow mouth is formed at the upper part of the overflow weir. The enhanced dephosphorization reactor combines thawing agglomeration dephosphorization, flocculation dephosphorization and crystallization dephosphorization, realizes the complementation of all functional units, has the advantages of compact structure and small occupation area; in addition, jet water inflow is adopted to enhance the mixing effect of wastewater and chemical agents, promote the reflux of the precipitated sludge for recovery and enhance dephosphorization effect; the solid-liquid separation effect is improved by the synergy of crystalline column layer filtration and inverted triangle sedimentation separation of the precipitation zone; and the precipitated sludge has high phosphorus content.

Description

technical field [0001] The invention relates to a treatment reactor for phosphorus-containing wastewater, in particular to an enhanced phosphorus removal reactor. Background technique [0002] my country's water pollution problem is very serious. Among the major lakes, eutrophic lakes caused by nitrogen and phosphorus pollution account for more than 50%, and the annual economic losses caused by "water blooms" and "red tides" are as high as tens of billions. On the one hand, phosphorus-containing wastewater is increasing, causing environmental pollution and ecological damage. On the other hand, the cycle of phosphorus in nature is incomplete. Except for the migration of guano with birds and artificial fishing of sea fish, phosphorus has not returned to the land again. way. It is estimated that according to the current mining speed, the global phosphate rock resources can only last for 100-250 years. Therefore, phosphorus removal from wastewater and its resource recycling ha...

AI Technical Summary

Problems solved by technology

Studies have shown that the biological phosphorus removal method has high requirements for wastewater components (C : N : P = 100 : 5 : 1 to meet the needs of functional microorganisms), low phosphorus removal efficiency, poor operational stability and flexibility, and excess sludge Dealing with and disposing of difficult issues

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