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Method for adsorbing and removing phycobiliprotein and microcystin-LR by modified attapulgite

A technology for modifying attapulgite and microcystin, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, and can solve problems such as high cost, secondary pollution, and filter blockage, and achieve Low production cost, high adsorption removal activity, low cost effect

Inactive Publication Date: 2010-06-16
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can remove the two kinds of pollutants to a certain extent, but the pollutants can easily lead to clogging of the filter layer, which has become a bottleneck problem in the large-scale application of this method.
The chemical method mainly converts microcystins and phycobiliproteins into other non-toxic substances through chemical reactions (redox, etc.). secondary pollution
However, in the adsorption process, whether the pores inside the crystal or the pores on the surface play the main role, whether chemical adsorption or physical adsorption plays the main role, there is no unified statement so far.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 100-300 mesh attapulgite and chitosan powder are compounded according to the mass ratio of 50-100:0.5-2 and added to the waste water containing microcystin and phycobiliprotein according to the ratio of 0.1-2g / L, Keep the pH value at 5-7, stir at 60-120 rpm for 2-7 minutes, let it stand until obvious flocs are formed, and use a 10-50 mesh gauze to fish out the flocs from the water body.

Embodiment 2

[0021] 100-300 mesh attapulgite and chitosan powder are compounded according to the mass ratio of 50-100:0.5-2 and added to the waste water containing microcystin and phycobiliprotein according to the ratio of 0.1-2g / L, Keep the pH value at 5-7, stir at a speed of 60-120 rpm for 2-7 minutes, let it stand until obvious flocs are formed, and filter the flocs through a quartz sand filter layer.

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PUM

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Abstract

The invention discloses a method for adsorbing and removing phycobiliprotein and microcystin-LR by modified attapulgite compounded by organic polymer, comprising the steps of compounding the attapulgite and chitosan powder according to the ratio of 50-100:0.5-2 by mass, adding the compounded mixture into waste water containing phycobiliprotein and microcystin-LR according to the ratio of 0.1-2g / L, stirring, standing, and spooning or filtering to remove the floc. The invention has the characteristics of low cost, high removal efficiency and environmental friendliness, and has larger application value and market prospect.

Description

technical field [0001] The invention relates to the field of biological environmental protection materials, in particular to a method for adsorbing and removing phycocyanin and microcystin by using organic polymer compound modified attapulgite. Background technique [0002] With the acceleration of urban industrialization and increasing environmental pollution, harmful cyanobacterial blooms caused by eutrophication have become an environmental problem of widespread concern at home and abroad. Among them, Microcystis blooms are the most common, and most of them produce toxins, which are the most harmful to freshwater bodies. Microcystins are a class of biologically active monocyclic heptapeptides, mainly produced by freshwater algae patina microcystis, but also produced by many other species of Microcystis, such as Oscillatoria, Anabaena, Nostoc and Microcystis viridis, Microcystis whitworthii, etc. Microcystins are hepatotoxins that inhibit protein phosphatases, thereby he...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/26
Inventor 蔡冬清吴正岩张宏唐义王相勤余增亮吴跃进
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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