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Organic modified zeolite used for porous medium sieve shore protection and its preparation method

A technology for modifying zeolite and porous media, applied in chemical instruments and methods, crystalline aluminosilicate zeolite, inorganic chemistry, etc. Problems such as poor adsorption and removal effect, to achieve the effect of improving the ability to remove organic matter

Inactive Publication Date: 2006-03-29
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional bank revetment medium screens generally use quartz sand, vermiculite, etc. These materials can play the role of bank revetment, but the specific surface area of ​​these materials is relatively small, and the adsorption and removal effect on pollutants in the river water is poor, so they cannot give full play to the river bank soil. The degradation of pollutants by microorganisms and surface plants cannot achieve the effect of pollutants-enrichment-in-situ degradation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Weigh a certain amount of zeolite with a particle size of 1.2 mm and place it in a reactor, wash it with distilled water, add 10 g / L NaCl solution, adjust the pH value of the solution to 3, and place it in a constant temperature oscillator. At a temperature of 25°C, shake at a constant temperature for 12 hours and then pour out the supernatant; wash with distilled water and dry at 105°C for later use.

[0016] (2) Take by weighing HDTMA and sodium zeolite equal to the external surface cation exchange capacity of 50% sodium zeolite in the reactor, add a certain amount of deionized water, after stirring for 8 hours, wash with deionized water and then dry naturally, thus obtaining HDTMA organically modified zeolite.

Embodiment 2

[0018] (1) Weigh a certain amount of zeolite with a particle size of 6 cm and place it in a reactor, wash it with distilled water, add 30 g / L of NaCl solution, adjust the pH value of the solution to 5, and place it in a stirring tank; at a temperature of 25 ° C, stir After 12 hours, pour out the supernatant; wash with distilled water and dry at 105°C for later use.

[0019] (3) Weigh HDTMA and sodium zeolite equal to the cation exchange capacity of the outer surface of 50% sodium zeolite in the reactor, add a certain amount of deionized water, stir for 8 hours, wash with deionized water and then air dry naturally to obtain HDTMA Organically modified zeolites.

Embodiment 3

[0021] (1) Weigh a certain amount of zeolite with a particle size of 0.2 cm and place it in a reactor, wash it with distilled water, add 30 g / L of NaCl solution, adjust the pH value of the solution to 7, and place it in a constant temperature oscillator; at a temperature of 25 ° C , after shaking for 12 h, decant the supernatant. After washing with distilled water, dry at 105°C.

[0022] (2) Weighing HDTMA and sodium zeolite equal to the cation exchange capacity of the outer surface of 50% sodium zeolite in the reactor, adding a certain amount of deionized water, stirring for 12 hours, washing with deionized water and then air-drying naturally to obtain HDTMA Organically modified zeolites.

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PUM

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Abstract

An organically modified zeolite used for the porous medium sieve to protect dam and dike and restore the ecological environment of river and dike or dam is prepared through loading natural zeolite particles in reactor, washing, proportionally adding NaCl solution, regulating pH=3-7, stirring, proportionally adding hexadecanetrimethyl ammonium bromide and Na-type zeolite, adding deionized water, stirring, washing with deionized water and natural drying in the air.

Description

(1) Technical field [0001] The invention relates to an organically modified zeolite which can be used for a porous media screen revetment and a preparation method thereof, and belongs to the technical field of embankment maintenance and restoration of water environments such as river courses, lakes, and urban water landscapes. (2) Background technology [0002] In recent years, in urban construction and river regulation, a new concept of ecological revetment, a new concept of urban river regulation that follows nature, has been put forward. [0003] The revetment medium screen in ecological revetment plays an irreplaceable role in ecological revetment. On the one hand, it plays the role of maintaining the stability of the bank slope, preventing soil erosion and ensuring flood control safety; on the other hand, as a medium for material exchange between water and river bank soil, it has good water permeability, can absorb pollutants, and can communicate Water ecosystems and t...

Claims

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Application Information

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IPC IPC(8): C01B39/06C01F3/00
Inventor 王曙光巩文信栾兆坤张栋华刘贤伟
Owner SHANDONG UNIV
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