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A kind of application method of biocomposite membrane material

A biocomposite membrane and application method technology, applied in the field of water purification, can solve the problems of complex preparation process, low adsorption capacity, secondary pollution, etc., and achieve the effects of stable physical and chemical properties, good film-forming performance, and easy operation.

Active Publication Date: 2017-08-29
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an application method of a biological composite membrane material for solving the common problems of low adsorption capacity, complicated preparation process, high cost and secondary pollution of current arsenic removal materials. The preparation process of the material is simple, Low cost, good arsenic removal effect, large adsorption capacity, fast adsorption rate, simple and convenient operation

Method used

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  • A kind of application method of biocomposite membrane material
  • A kind of application method of biocomposite membrane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare Cha's liquid culture medium, weigh 30g sucrose, 3g sodium nitrate, 1g dipotassium hydrogen phosphate, 0.5g magnesium sulfate heptahydrate, 0.5g potassium chloride and 0.01g ferrous sulfate, dissolve in 300mL deionized water, and then , the volume was adjusted to 1 liter with deionized water, and after high-temperature (121° C.) autoclaving for 30 minutes, a liquid medium was obtained for use. Inoculate the concentration 10 with the inoculation volume of 2% of the medium volume 6 -10 7 Aspergillus sp.F-1 (Aspergillus sp.F-1, preservation number CGMCC No.5858) bacteria solution per ml was inoculated into the liquid medium for culture, and then placed in a constant temperature shaking box with a temperature of 37°C and a rotation speed of 170r / min for 3 days; measure 100mL of bacterial solution (concentration is 9g L -1 ) into 150mL of 0.1mol / L ferric sulfate solution, add 0.1M NaOH dropwise to adjust the pH to 9.0, the reaction time is 72 hours, then heat the re...

Embodiment 2

[0027] At room temperature, the biofilm material prepared in Example 1 was used to filter the solution containing 1.52 mg / L of trivalent arsenic, and the concentration of trivalent arsenic in the filtered solution was measured by inductively coupled plasma atomic emission spectrometry. The concentration of arsenic after filtration was reduced to 0.13mg / L, and the removal efficiency of arsenic reached 91%.

Embodiment 3

[0029] At room temperature, the biofilm material prepared in Example 1 was used to filter the solution containing 40 mg / L trivalent arsenic, and the concentration of trivalent arsenic in the filtered solution was measured by inductively coupled plasma atomic emission spectrometry. The concentration of arsenic after filtration was reduced to 9.5mg / L, and the removal efficiency of arsenic reached 76%.

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Abstract

The invention belongs to the technical field of water purification, and in particular relates to an application method of a biological composite membrane material. Filamentous bacteria and metabolites of the filamentous bacteria are used as substrates; modification is performed through ferric sulfate and alkaline liquor; gravity filtering and ultrasonic cleaning are performed; the materials are poured into a membrane forming container to be subjected to vacuum suction filtration; the materials are put into a polymine solution to be soaked; freeze drying is performed; the biological composite membrane material is obtained. The process of the preparation process of the biological composite membrane material is simple; the preparation operation condition is mild; the cost is low; secondary pollution does not exist; the biological composite membrane material is used for removing arsenic from a water body; through the multiple effects of adsorption, ion exchange, retention and the like of the biological composite membrane, the application method is simple; the operation is easy; the arsenic removal efficiency is high; during the treatment on arsenic-containing water with the concentration lower than 40mg / L, the arsenic removal rate can reach 76 to 91 percent after filtering via the biological composite membrane.

Description

technical field [0001] The invention belongs to the technical field of water purification, and in particular relates to an application method of a biological composite material capable of efficiently removing arsenic in water. It is suitable for the deep purification of arsenic in industrial wastewater, and the removal of arsenic in drinking water, groundwater, lakes, rivers and other water bodies. Background technique [0002] Arsenic pollution in water bodies is a widespread problem worldwide. Long-term drinking of groundwater with excessive arsenic can easily lead to endemic drinking-water arsenic poisoning (referred to as "earth arsenic disease"), which can lead to lung cancer, skin cancer and other cancers in severe cases. Both the World Health Organization and China have stipulated that the content of arsenic in drinking water should not exceed 10 μg / L. Arsenic pollution in my country is very serious. According to a 2013 "Science" research result, nearly 20 million pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/58B01J20/28
CPCB01J20/0229B01J20/24B01J20/28033B01J2220/46B01J2220/4868C02F1/286C02F1/58
Inventor 杨卫春柴立元田舜琪唐琼芝王海鹰李青竹廖骐唐崇俭
Owner CENT SOUTH UNIV
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