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Method and system for treating high-fluorine high-hardness wastewater by two-stage two-phase fluidized bed through self crystallization

A self-crystallization and fluidized bed technology, applied in chemical instruments and methods, water/sewage treatment, water treatment parameter control, etc., can solve the problems of increasing sludge impurities, high moisture content, large sludge volume, etc.

Active Publication Date: 2017-05-10
MCC CAPITAL ENGINEERING & RESEARCH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional sedimentation process, in order to accelerate the sedimentation, measures such as excessive dosing of chemicals and coagulant are taken, which increases the impurities of the sludge, making the sedimentation sludge worthless for recycling and increasing the difficulty of sludge treatment, and the sludge Large volume and high water content, the separate disposal of sludge is even more difficult than water treatment

Method used

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  • Method and system for treating high-fluorine high-hardness wastewater by two-stage two-phase fluidized bed through self crystallization
  • Method and system for treating high-fluorine high-hardness wastewater by two-stage two-phase fluidized bed through self crystallization
  • Method and system for treating high-fluorine high-hardness wastewater by two-stage two-phase fluidized bed through self crystallization

Examples

Experimental program
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Effect test

Embodiment 1

[0209] This embodiment provides a self-crystallization fluidized bed reactor, the structural representation of the self-crystallization fluidized bed reactor is as follows figure 2 shown, which includes:

[0210] Reactor shell;

[0211] The water distributor 22 installed at the bottom of the reactor cylinder, when the reactor is running, the water distribution area 23 is below the water distributor 22, and the cavity above the water distributor 22 will form a fluidized bed 24;

[0212] A water collection weir 26 is arranged around the top of the reactor cylinder, and below the water collection weir 26 is a solid-liquid separation area 25, and an annular water collection pipe 27 is arranged between the solid-liquid separation area 25 and the fluidized bed 24;

[0213] The side wall of the reactor cylinder is provided with a water inlet 30, a slag discharge port 31, a dosing port 32, a water outlet 33, and a sampling pipe 35,

[0214] Wherein, the water inlet 30 and the slag ...

Embodiment 2

[0219] This embodiment provides a self-crystallization fluidized bed reactor, the structural representation of the self-crystallization fluidized bed reactor is as follows image 3 shown, which includes:

[0220] Reactor shell;

[0221] The water distributor 22 installed at the bottom of the reactor cylinder, when the reactor is running, the water distribution area 23 is below the water distributor 22, and the cavity above the water distributor 22 will form a fluidized bed 24;

[0222] A water collection weir 26 is arranged around the top of the reactor cylinder, and below the water collection weir 26 is a solid-liquid separation area 25, and an annular water collection pipe 27 is arranged between the solid-liquid separation area 25 and the fluidized bed 24;

[0223] The side wall of the reactor cylinder is provided with a water inlet 30, a slag discharge port 31, a dosing port 32, a water outlet 33, and a sampling pipe 35,

[0224] Wherein, the water inlet 30 and the slag d...

Embodiment 3

[0230] This embodiment provides a two-stage two-phase fluidized bed self-crystallization system for treating high-fluorine and high-hardness wastewater. The structural diagram of the system is as follows figure 1 Shown, it comprises: two self-crystallizing fluidized bed reactors described in embodiment 1 (or embodiment 2): respectively denoted as primary reactor 1 (wherein, the water circulation system of primary reactor comprises primary reaction Circulation pump 6 and return pipeline 16, return pipeline 16 comprises outlet pipeline and return pipeline), secondary reactor 2 (wherein, the water circulation system of secondary reactor comprises secondary reactor circulation pump 8 and return pipe 18, the return pipeline 18 includes the water outlet pipeline and the water return pipeline); the medicament A dosing device 3, the medicament B dosing device 4, the primary material pool 7 and the secondary material pool 9;

[0231] Wherein, the raw water pool is connected to the wate...

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Abstract

The invention provides a method and system for treating high-fluorine high-hardness wastewater by a two-stage two-phase fluidized bed through self crystallization. The system comprises two self crystallization fluidized bed reactors (which are respectively recorded as a first-stage reactor and a second-stage reactor), a chemical A adding device, a chemical B adding device, a first-stage material pool and a second-stage material pool, wherein a raw water pool is connected with a water inlet opening of the first-stage reactor through a water inlet pump via a water inlet pipeline; the chemical A adding device is connected with a chemical adding opening of the first-stage reactor through a chemical A adding pipeline; a slag discharging opening of the first-stage reactor is connected with the first-stage material pool through a first-stage reactor mud discharging pipe; a water outlet of the first-stage reactor is connected with a water inlet opening of the second-stage reactor through a first-stage water outlet pipeline; the chemical B adding device is connected with a chemical adding opening of the second-stage reactor through a chemical B adding pipeline; a sludge discharging opening of the second-stage reactor is connected with the second-stage material pool through a second-stage reactor sludge discharging pipe; a water outlet opening of the second-stage reactor is connected with a recovery device through a second-stage water outlet pipeline.

Description

technical field [0001] The invention relates to a two-stage two-phase fluidized bed self-crystallization method and system for treating high-fluorine and high-hardness wastewater, belonging to the technical field of wastewater treatment. Background technique [0002] In the field of wastewater treatment, the method of adding a certain chemical substance to wastewater to cause the chemical substance to react with some dissolved substances in it to form insoluble salts and precipitate them is called chemical precipitation. The formation of precipitation has experienced a process of occurrence and development from scratch, from small to large, and this process is very complicated. [0003] Simply put, the process of precipitation formation includes two processes: the formation of crystal nuclei (nucleation) and the growth of precipitated particles. [0004] (1) Formation of crystal nuclei—homogeneous nucleation or heterogeneous nucleation, that is: crystal ions nucleate in hom...

Claims

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Application Information

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IPC IPC(8): C02F1/58C02F5/02C01F11/22C01F11/18C02F101/10
CPCC01F11/181C01F11/22C02F1/583C02F5/02C02F2209/10C02F2101/10C01P2006/80
Inventor 梁思懿刘寅刘全金杜兵祝群力李杰尹航曹建平何然王珊
Owner MCC CAPITAL ENGINEERING & RESEARCH
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