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Preparation method of modified biologically-activated filter fillings

A kind of biological and active technology, applied in the field of preparation of modified biological active filter filler, to achieve the effect of strengthening, shortening the film hanging period, and enhancing the adsorption effect

Inactive Publication Date: 2011-01-19
GANSU GOLDEN BRIDGE GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Domestically, there have been literature reports on the modification of modified ceramsite filter material, polystyrene filter material and its application in biological aerated filter tanks, and nutrient slow-release modified polyethylene fillers, but there is no report on the modification of ceramsite Simultaneous report on ceramsite filter media modified by metal oxide and degradable polymer hydrogel

Method used

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  • Preparation method of modified biologically-activated filter fillings
  • Preparation method of modified biologically-activated filter fillings

Examples

Experimental program
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Embodiment 1

[0028] The preparation method of embodiment 1 modified bioactive filter tank filler, comprises the following steps:

[0029] (1) Wash the inorganic carrier ceramsite with a particle size of 3 to 8 mm, first soak it with hydrochloric acid with a molar concentration of 0.5mol / l for 24 hours, and wash with water until neutral; then oxidize it with a molar concentration of 0.5mol / l Soak in sodium for 24 hours, wash with water until neutral; then dry at 100°C for 5 hours to obtain a dry filler.

[0030] (2) Put the dry filler into FeCl with a molar concentration of 1.0mol / l 3 In metal salt solution, immerse and sonicate for 1-2 hours, dry at 100°C for 6 hours, and then sinter in a muffle furnace at 550°C for 5 hours to obtain a sintered material.

[0031] (3) Wash the sintered material after natural cooling, and dry it at 100° C. for 3 hours to obtain a dry sintered material.

[0032] (4) Put the dry sintered material into the macromolecule hydrogel-polyvinyl alcohol solution wit...

Embodiment 2

[0036] The preparation method of embodiment 2 modified bioactive filter tank fillers, comprises the following steps:

[0037] (1) Wash the inorganic carrier porous ceramic particles with a particle size of 3 to 8 mm, soak them in hydrochloric acid with a molar concentration of 2.0 mol / l for 12 hours, wash with water until neutral; then use hydrogen with a molar concentration of 2.0 mol / l Soak in sodium oxide for 12 hours, wash with water until neutral; then dry at 110°C for 3 hours to obtain a dry filler.

[0038] (2) Put the dry filler into AlCl with a molar concentration of 3.0mol / l 3 In metal salt solution, immerse and ultrasonic for 1-2 hours, dry at 110°C for 4 hours, and then sinter at 750°C for 3 hours in a muffle furnace to obtain a sintered material.

[0039] (3) Wash the sintered material after natural cooling, and dry it at 110° C. for 2 hours to obtain a dry sintered material.

[0040] (4) Put the dry sintered material into the polymer hydrogel containing trace e...

Embodiment 3

[0044] The preparation method of embodiment 3 modified bioactive filter tank fillers, comprises the following steps:

[0045] (1) Wash the inorganic carrier ceramsite with a particle size of 3 to 8 mm, first soak it with hydrochloric acid with a molar concentration of 1.0mol / l for 18 hours, and wash with water until neutral; then oxidize it with a molar concentration of 1.0mol / l Soak in sodium for 18 hours, wash with water until neutral; then dry at 105°C for 4 hours to obtain a dry filler.

[0046] (2) Put the dry filler into Fe(NO with a molar concentration of 2.0mol / l 3 ) 3 In metal salt solution, immerse and sonicate for 1-2 hours, dry at 105°C for 5 hours, and then sinter in a muffle furnace at 650°C for 4 hours to obtain a sintered material.

[0047] (3) Wash the sintered material after natural cooling, and dry it at 105° C. for 2.5 hours to obtain a dry sintered material.

[0048] (4) Put the dried sintered material into the polymer hydrogel-carrageenan solution with...

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Abstract

The invention relates to a preparation method of modified biologically-activated filter fillings, comprising the following steps of: (1) cleaning an inorganic carrier with the grain diameter of 3-8 millimetres, sequentially carrying out acid cleaning, alkaline cleaning and drying to obtain dry fillings; (2) adding the dry fillings to a metal salt solution to carry out soaking and ultraphonic, drying and sintering to obtain sintering charges; (3) naturally cooling and drying the sintering charges to obtain dry sintering charges; (4) adding the dry sintering charges to a polymeric hydrogel solution containing trace elements and nutrient salts, carrying out soaking and ultraphonic and reacting in a saturated boric acid solution or a 3% calcium chloride solution so as to obtain crosslinked fillings; and (5) drying and naturally cooling the crosslinked fillings so as to obtain the modified biologically-activated filter fillings. The invention has the advantages of simple process and easy implementation; and in addition, the obtained modified biologically-activated filter fillings can increase the activity and the number of biomembranes, shorten the membrane-forming periods of biological aerated filter fillings and enhance the sewage treatment efficiency and the stability of a biological aerated filter.

Description

technical field [0001] The invention relates to a preparation method of a modified filler of an aerated biological filter, in particular to a preparation method of a modified biologically active filter filler. Background technique [0002] The biological aerated filter process for sewage treatment has been widely used since the early 1990s, especially in Europe, America and Japan. As a new type of sewage treatment process, packing technology plays a central role in this process. As the carrier for microbial adsorption growth and the medium for adsorbing and retaining pollutants in water and shedding biofilms, the dielectric properties and functional group structure of the surface have an important impact on its adsorption characteristics. However, most of the current biological aerated filters use traditional quartz sand, anthracite, coke, crushed stone inorganic fillers and new fiberglass or plastic honeycomb and three-dimensional corrugated fillers. Traditional inorganic...

Claims

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Application Information

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IPC IPC(8): C02F3/10
CPCY02W10/10
Inventor 周林成王耀龙李彦锋贾小宁郑伟王刚
Owner GANSU GOLDEN BRIDGE GRP CO LTD
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