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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AI-Extracted 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 nutr...

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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.

Application Domain

Sustainable biological treatmentBiological water/sewage treatment

Technology Topic

NutrientSewage treatment +7

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Examples

Experimental program(3)

Example Embodiment

[0028] Embodiment 1 The preparation method of modified biologically active filter filler includes the following steps:

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

[0030] (2) Put the dry filler into FeCl with a molar concentration of 1.0mol/l 3 In the metal salt solution, immerse and sonicate for 1 to 2 hours, dry at 100°C for 6 hours and 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 a 2% mass concentration of microelement and nutrient-containing polymer hydrogel-polyvinyl alcohol solution, soak and ultrasonic for 0.5-3h; then, sinter the dipped The material is put into a saturated boric acid solution to react for 0.5-1h to obtain a crosslinked filler.

[0033] Among them: trace elements refer to 350μg of MgCl per liter of molecular hydrogel solution 2 ·6H 2 O, 35μg MnSO 4 ·H 2 O, 5μgZn(NO 3 ) 2 ·6H 2 O, 15μg Co(NO 3 ) 2 ·6H 2 O, 1μg(NH 4 ) 6 Mo 7 O 24 ·6H 2 O, 0.5μg CuSO 4 ·5H 2 O, 10μg NiCl 2 ·6H 2 O, 1μg H 3 BO 4 , 0.5μg Na 2 WO 4 ·2H 2 O, 0.5μg AlK(SO 4 ) 2 ·12H 2 O and 15μg anhydrous CaCl 2 Of trace elements.

[0034] Nutrients refer to 2000mg KH per liter of hydrogel solution 2 PO 4 , 2000mgK 2 HPO 4 , 1500mg NH 4 Cl and 2000mg NaHCO 3 Salt.

[0035] (5) After drying the cross-linked filler at 100°C for 2 hours, it is naturally cooled at room temperature to obtain a modified bioactive filter filler.

Example Embodiment

[0036] Embodiment 2 The preparation method of modified biologically active filter filler includes the following steps:

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

[0038] (2) Put the dry filler into AlCl with a molar concentration of 3.0 mol/l 3 In the metal salt solution, immerse and sonicate for 1 to 2 hours, dry at 110°C for 4, and sinter in a muffle furnace at 750°C for 3 hours 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 a 10% mass concentration of microelement and nutrient-containing polymer hydrogel-sodium alginate solution, immerse and ultrasonic for 0.5-3h; then, sinter the dipped The material is put into a calcium chloride solution with a mass concentration of 3% to react for 0.5-1 h to obtain a cross-linked filler.

[0041] Among them: trace element means 450μg of MgCl per liter of molecular hydrogel solution 2 ·6H 2 O, 65μg MnSO 4 ·H 2 O, 15μgZn(NO 3 ) 2 ·6H 2 O, 25μg Co(NO 3 ) 2 ·6H 2 O, 5μg(NH 4 ) 6 Mo 7 O 24 ·6H 2 O, 2μg CuSO 4 ·5H 2 O, 15μg NiCl 2 ·6H 2 O, 3μg H 3 BO 4 , 2μg Na 2 WO 4 ·2H 2 O, 2μg AlK(SO 4 ) 2 ·12H 2 O and 25μg anhydrous CaCl 2 Of trace elements.

[0042] Nutrient salts refer to 5000mg KH per liter of hydrogel solution 2 PO 4 , 5000mgK 2 HPO 4 , 2500mg NH 4 Cl and 3000mg NaHCO 3 Salt.

[0043] (5) After drying the cross-linked filler at 110°C for 1 hour, it is naturally cooled at room temperature to obtain a modified biologically active filter filler.

Example Embodiment

[0044] Example 3 The preparation method of modified biologically active filter filler includes the following steps:

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

[0046] (2) Put the dry filler into Fe(NO) with a molar concentration of 2.0mol/l 3 ) 3 In the metal salt solution, immerse and sonicate for 1 to 2 hours, dry at 105°C for 5 hours, and 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 dry sintered material into the carrageenan solution containing trace elements and nutrient salts with a mass concentration of 6%, immerse and ultrasonicate for 0.5~3h; then, the immersed The sintered material is put into a saturated boric acid solution to react for 0.5-1h to obtain a crosslinked filler.

[0049] Among them: trace elements refer to 400μg of MgCl per liter of molecular hydrogel solution 2 ·6H 2 O, 50μg MnSO 4 ·H 2 O, 10μgZn(NO 3 ) 2 ·6H 2 O, 20μg Co(NO 3 ) 2 ·6H 2 O, 3μg(NH 4 ) 6 Mo 7 O 24 ·6H 2 O, 1.5μg CuSO 4 ·5H 2 O, 12μg NiCl 2 ·6H 2 O, 2μg H 3 BO 4 , 1.5μg Na 2 WO 4 ·2H 2 O, 1.5μgAlK(SO 4 ) 2 ·12H 2 O and 20μg anhydrous CaCl 2 Of trace elements.

[0050] Nutrients refer to 3500mg KH per liter of hydrogel solution 2 PO 4 , 3500mgK 2 HPO 4 , 2000mg NH 4 Cl and 2500mg NaHCO 3 Salt.

[0051] (5) After drying the cross-linked filler at 105°C for 1.5 hours, it is naturally cooled at room temperature to obtain the modified bioactive filter filler.

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PUM

Property	Measurement	Unit
Particle size	3.0 ~ 8.0	mm
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Promote growth

Negative pole material for lithium-ion secondary battery, negative pole containing negative pole material, preparation method of negative pole and battery containing negative pole

InactiveCN102122708APromote growthSmall volume effectNon-aqueous electrolyte accumulator electrodesLi-accumulatorsMobile electronicsPolyamide

Owner:INST OF PHYSICS - CHINESE ACAD OF SCI

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

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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