Integrated nitrogen and phosphorus recovery device with low energy consumption

Abstract

The invention relates to an integrated nitrogen and phosphorus recovery device with low energy consumption, which comprises a vertical tank body; the bottom of the vertical tank body is provided with a water inlet ejector; a dosage adding device and a water inlet pipe are connected with the water inlet ejector; one end of a clear water outlet pipe is communicated with the top of the vertical tank body; and the integrated nitrogen and phosphorus recovery device is characterized in that: a fluidization area is arranged on the middle and lower part in the vertical tank body; struvite seed crystal particles are arranged in the fluidization area; the center of the fluidization area is provided with a guide mixer; a space of the tank body under the guide mixer is a water distribution area which is communicated with the water inlet ejector; the top of the vertical tank body is provided with a lifting device; and the guide mixer is arranged on the output shaft of the lifting device. The integrated nitrogen and phosphorus recovery device has the advantages that the integrated nitrogen and phosphorus recovery device quickens the mass transfer process of a system, greatly reduces running cost and operation difficulty, improves interception efficiency and recovery effect of nitrogen and phosphorus, has simple and convenient engineering design and short installation period of construction, does not need external reflux, and has low energy consumption of internal reflux, frequency conversion and speed regulation, easy control of magnesium source externally added, and low content of magnesium in the outlet water.

Description

technical field [0001] The invention relates to a low energy consumption integrated nitrogen and phosphorus recovery device, which is used for treating nitrogen and phosphorus-containing wastewater and recovering nitrogen and phosphorus elements, and belongs to the technical field of nitrogen and phosphorus-containing wastewater treatment devices. Background technique [0002] Phosphorus is a very valuable and scarce non-renewable resource. It is predicted that the global phosphate reserves are only enough to last for about 100 years, and phosphorus will become a limiting factor for human and terrestrial life activities. my country is rich in phosphate rock resources, and its proven reserves rank third in the world. However, compared with other countries, there are gaps in the following aspects in terms of ore quality, selectivity and phosphate rock mining: first, there are few rich ores and more low-grade ores. Among the proven phosphate rock reserves, the rich ore with P...

AI Technical Summary

Problems solved by technology

The second is that there are many difficult ores and few easy ores

[0006] At present, there are relatively few researches on phosphorus recovery technology in China, and most of them are concentrated in the medium and small test stage. The content of the research is still lacking in depth and breadth, and there is no industrial production equipment.

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