Phosphorus removal and phosphorus recovery device for urban landscape water

Abstract

The invention discloses a phosphorous removal and recovery device for an urban landscape water body. The phosphorous removal and recovery device comprises multiple groups of submerged variable-frequency water supply pumps, a phosphorus transformation-phosphorus recovery device, a variable-frequency fan, a phosphorus and calcium insoluble collected liquid recovery pump, phosphorus and calcium insoluble collected liquid dehydration drying equipment and a PLC electrical control system, wherein electric butterfly valves arranged on all pipes are connected with the PLC electrical control system respectively; the variable-frequency fan inputs gas into a water delivery main pipe; the phosphorus transformation-phosphorus recovery device is a cylindrical accommodation body including four main functional zones, and the four main functional zones comprise a reaction zone, a three-phase separation zone, a gravity settling zone and a wobble plate solid-liquid separation zone; filler at an inlet section of the reaction zone is CaCO3 ore grains, insoluble phosphorus transformation products are generated by phosphate in water flow and CaCO3, and phosphorous removal is realized. Removal of insolubles such as Ca3(PO4)2, Ca5(PO4)3OH and the like covering the surfaces of the CaCO3 ore grains is enhanced while mass transfer and reaction between the ore grains in the reaction zone and water flow isenhanced, and the insolubles enter the solid-liquid separation zones in various forms with water flow and are intercepted and collected.

Description

technical field [0001] The invention relates to a phosphorus removal-phosphorus recovery structure for a landscape water body, which belongs to the technical field of environmental engineering, in particular to an online phosphorus removal-phosphorus recovery device for a landscape water body. Background technique [0002] With the development of urbanization, more and more urban landscape water bodies appear. For most closed and slow-flowing urban landscape water bodies, phosphorus is the key factor causing eutrophication and cyanobacterial blooms. Phosphorus source for algae assimilation is mainly phosphate, so the control of phosphate is also a key issue in the suppression of algal blooms in urban landscape water bodies. [0003] Since phosphorus is also a limited resource that cannot be naturally regenerated and is facing depletion, the Ministry of Land and Resources has listed phosphorus rock as one of the important minerals that cannot meet the needs of national econo...

AI Technical Summary

Problems solved by technology

However, with Ca 3 (PO 4 ) 2 , Ca 5 (PO 4 ) 3 Formation of insoluble substances such as OH, CaCO 3 The surface of ore particles will be gradually covered by Ca 3 (PO 4 ) 2 , Ca 5 (PO 4 ) 3 OH and other insoluble matter coverage, CaCO 3 The contact between the surface of the ore particles and the solution is gradually blocked, limiting the CaCO 3 The ore particles further dissolve Ca 2+ Reacts with phosphate in water; CaCO 3 It cannot be effectively utilized, so that its advantages in water body phosphorus conversion and phosphorus recovery cannot be fully utilized

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