Tower-type adsorption reactor and system and method thereof for removing heavy metal ions in water

A reactor and tower technology, which is applied in the field of systems for rapidly removing heavy metal ions in water source water, can solve problems such as large volume and subsequent environmental problems, and achieve the effects of large adsorption capacity, low power consumption and good adsorption effect.

Active Publication Date: 2014-01-15
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the shortcomings of the existing rapid removal system of heavy metal ions in water, as well as the defects of resin fragmentation, wear and subsequent environmental problems, the present invention provides a tower adsorption reactor and its system and method for removing heavy metal ions in water. The reactor and the internal fiber adsorption material can quickly absorb and remove heavy metal ions in the source water, and realize the repeated use of the fiber adsorption material through in-situ desorption regeneration

Method used

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  • Tower-type adsorption reactor and system and method thereof for removing heavy metal ions in water
  • Tower-type adsorption reactor and system and method thereof for removing heavy metal ions in water
  • Tower-type adsorption reactor and system and method thereof for removing heavy metal ions in water

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Embodiment 1

[0037] In the specific embodiment, the source water is prepared by adding nickel nitrate, copper nitrate, lead nitrate and cadmium nitrate to river water. The concentration of heavy metal ions in the water sample is as shown in Table 1:

[0038] Table 1 Influent Water Quality

[0039] Nickel ion (mg / L) Copper ion (mg / L) Lead ion (mg / L) Cadmium ion (mg / L) Influent water quality 4.4 6.5 5.5 4.3

[0040] like Figure 4 As shown, the material of the tower adsorption reactor used in the embodiment is polypropylene, 1.0 meters high, 0.4 meters in inner diameter, 0.35 meters in diameter of the water distributor, 6 layers of spiral porous pleated plates, and fibrous materials in the grooves of the porous pleated plates , with a thickness of 0.05 m. The inner diameter of the desorbent preparation tank is 0.4 meters and the height is 0.8 meters; the inner diameter of the regeneration agent preparation tank is 0.4 meters and the height is 0.8 meters. D...

Embodiment 2

[0049] Example 3

Embodiment 3

[0051] Example 4:

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Abstract

The invention discloses a tower-type adsorption reactor and a system and a method thereof for removing heavy metal ions in water, belonging to the water treatment filed. The tower-type adsorption reactor comprises a tower body, a water distributor [5] and a water collector [8], and further comprises a screw-type porous pleated sheet [7] and a fiber adsorbing material [12], wherein the water distributor [5] is arranged at the inner top end of the tower; the screw-type porous pleated sheet [7] is arranged in the tower body; the fiber adsorbing material [12] is coated in the groove of the screw-type porous pleated sheet [7]; and the water collector [8] is arranged at the inner bottom of the tower; the system comprises one or more tower-type adsorption reactors which are in parallel connected; the method for removing the heavy metal ions in the water comprises the following steps of: feeding water, adsorbing and discharging water, desorbing fibers, recycling desorption effluent and recycling fiber, wherein the concentration of heavy metal ions in the desorption outlet water is lower than the heavy metal ion concentration limit value of national drinking water hygienic standard; and the heavy metal ions can be in-situ desorbed, regenerated and recycled after the fiber adsorption is saturated. The system is simple in structure, convenient to operate, stable in operation, and capable of quickly removing the plurality of heavy metal ions in the water.

Description

technical field [0001] The invention relates to a system and method for quickly removing heavy metal ions in source water, more specifically a tower-type adsorption reactor and the system and method for removing heavy metal ions in water. Background technique [0002] There are more than 60 water pollution emergencies in my country every year, among which heavy metal pollution accounts for more than half. Heavy metals pose a great threat to human health. At present, the methods for removing heavy metal ions in water reported in the literature mainly include activated carbon adsorption, membrane, chemical precipitation and resin adsorption. These methods have the following problems in the application process: 1) Activated carbon, as a traditional advanced treatment technology for drinking water, has Domestic water plants have been widely used, but the adsorption capacity of activated carbon for heavy metal ions is low, its adsorption capacity is only 40-50 mg / g, and the adso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F9/10C02F1/44C02F101/20
Inventor 王津南杨欣程澄王钇
Owner NANJING UNIV
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