Reactor for removing phosphorus by struvite crystallization method
A crystallization method and reactor technology, applied in the field of struvite crystallization method phosphorus removal reactor, can solve the problems of affecting struvite crystal growth, reactor supersaturation, secondary nucleation, etc., and avoid local supersaturation phenomenon. , reduce power consumption, improve the effect of the effect
Pending Publication Date: 2022-06-03
BEIJING KERUIDUO ENVIRONMENTAL ENG CO LTD +1
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Problems solved by technology
[0003] The phosphate treatment and recovery device of the traditional granular phosphorus crystallization method is often caused by partial supersaturation of the reactor due to local uneven mixing, which leads to secondary nucleation and affects the growth of struvite crystals. Therefore, a struvite is urgently needed Phosphorus removal reactor by crystallization method to solve the above problems
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[0031] Example: as Figure 1-2 As shown, a struvite crystallization method for phosphorus removal reactor includes a reactor 1, a water conduit 2 is vertically arranged in the reactor 1, and phosphorus-containing waste water enters the reactor 1 through the water conduit 2, wherein the water conduit 2 A stirring shaft 3 is installed along its axial direction, and a propeller 4 is installed above the stirring shaft 3 near the water inlet of the aqueduct 2. The propeller 4 rotates to drive the water flow to flow downward, and the bottom of the stirring shaft 3 is located at the water outlet of the aqueduct 2, and Coaxial with the stirring shaft 3, at least one rotary nozzle 5 is installed, the rotary nozzle 5 is connected with an infusion pipe 6, and the other end of the infusion pipe 6 extends from the side wall of the reactor 1, and the top of the reactor 1 is provided with a cover plate 7, A driving mechanism is installed on the cover plate 7 , and is installed on the top of ...
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The invention discloses a struvite crystallization method phosphorus removal reactor which comprises a reaction kettle, a water guide pipe is vertically arranged in the reaction kettle, a stirring shaft is installed in the water guide pipe in the axis direction of the water guide pipe, a propeller and a rotary spray head are installed on the stirring shaft, and the propeller is used for driving water flow to flow into the water guide pipe from bottom to top and flow downwards along the water guide pipe; according to the present invention, the reaction kettle is arranged to form the circulation so as to conveniently generate struvite crystals in the lower region of the reaction kettle, the rotary nozzle is arranged so as to rotatably input the reactant into the wastewater, and the liquid is immediately and completely mixed with the wastewater after entering the reactor, such that the local supersaturation phenomenon of the reactor caused by non-uniform local mixing is avoided, the stirring shaft is used for controlling the propeller, the rotary spray head and the stirring blades to rotate, mixed liquid can be fully stirred, the liquid can be driven to flow, the driving mechanism is used for driving, the purpose of saving energy is further achieved, power consumption of phosphate in waste water in the removal and recovery process is reduced, and economic benefits are improved.
Description
technical field [0001] The invention relates to the technical field of phosphorus removal by struvite crystallization method, in particular to a phosphorus removal reactor by struvite crystallization method. Background technique [0002] The product obtained by treating and recovering phosphate in waste (sewage) water by struvite particle crystallization technology is mainly struvite (magnesium ammonium phosphate, MAP). MAP is a white crystalline substance with a molecular formula of MgNH4PO4 6H2O. Adding magnesium ions to nitrogen and phosphorus-containing waste (sewage) water and controlling the appropriate pH value to form and obtain crystalline particles, on the one hand, nitrogen and phosphorus pollutants in waste (sewage) water can be removed, and on the other hand, both Recycling value of phosphorus resources. In addition, MAP has very little reserves in nature and is a high-grade phosphate rock, which can be used as a raw material for industrial production and as an...
Claims
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IPC IPC(8): B01J19/18B01J19/20B01J4/00C02F9/04C02F101/10
CPCC02F9/00B01J19/18B01J19/20B01J4/002B01J4/007C02F1/001C02F2001/007C02F1/5281C02F2303/14C02F2101/105Y02A40/20
Inventor 李多贾荣利崔思杭巴琦乔治·帕特里克约翰·查尔斯
Owner BEIJING KERUIDUO ENVIRONMENTAL ENG CO LTD