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

A reactor and tower type technology, which is applied in the field of rapid removal of heavy metal ions in water source water, can solve the problems of large volume and subsequent environmental problems, and achieve the effect of large adsorption capacity, low power consumption and fast adsorption rate

Active Publication Date: 2013-04-24
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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Effect test

Embodiment 1

[0037] like figure 1 As shown, the tower adsorption reactor includes a tower body, a water distributor 5, a spiral porous pleated plate 7, a fiber adsorption material 12 and a water collector 8, and the water distributor 5 is located at the top of the tower, and the tower body has a spiral The porous pleated plate 7, the groove of the spiral porous pleated plate 7 is covered with fiber adsorption material 12, and the water collector 8 is at the bottom of the tower. The tower body is also provided with an observation window 6, and an air vent 4 is provided above the water distributor 5. A water inlet 1, a desorbent inlet 2 and a regeneration agent inlet 3 are respectively arranged on the top of the tower body, and are connected with the water distributor. The bottom of the tower is provided with a desorption effluent outlet 9, a water outlet 10 and a regeneration effluent outlet 11 respectively, and is connected with a water collector 8, and the tower body is circular. The sy...

Embodiment 2

[0049] The system used, influent water quality and operating conditions are the same as in Example 1, the tower body is square, but the influent flow rate is increased to 0.1 liters per second, and the effluent water quality after treatment is as follows Figure 8 . The results show that a single tower can continuously process 45,000 liters of water. Under the double-tower parallel mode, the two towers alternate adsorption-desorption regeneration, which can realize the uninterrupted operation of the system and effectively control the concentration of heavy metal ions in the adsorbed water to be lower than the concentration of heavy metal ions in the national drinking water hygiene standard. limit.

Embodiment 3

[0051] The system used, influent water quality and operating conditions are the same as in Example 1, but the thickness of the fiber material in the groove of the porous pleated plate is 0.04 meters, and the effluent water quality after treatment is as follows Figure 9 . The results show that a single tower can continuously process 43,000 liters of water. Under the double-tower parallel mode, the two towers alternate adsorption-desorption regeneration, which can realize the uninterrupted operation of the system and effectively control the concentration of heavy metal ions in the adsorbed water to be lower than the concentration of heavy metal ions in the national drinking water hygiene standard. limit.

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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 Applications(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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