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Biomass-based adsorbent and method for treating desizing wastewater COD by using biomass-based adsorbent

A technology for desizing wastewater and adsorption treatment, applied in the direction of adsorption water/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of low adsorption efficiency, function, and inability to remove COD, and achieve low investment, The effect of low energy consumption

Inactive Publication Date: 2020-09-25
LUDONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, some researchers use adsorption method to treat wastewater COD in the laboratory. The COD removal rate is generally about 20%. Such adsorption efficiency is too low to be effective in actual COD removal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 5g cationic starch, 5g mordenite in the presence of 0.3g silane coupling agent KH550 to prepare cationic starch / zeolite cross-linked composite adsorption material; under normal temperature, 0.3g cationic starch / zeolite cross-linked composite adsorbent and 100g COD The desizing wastewater was placed in a 200mL agitator, mixed evenly, and adsorbed for 10 minutes; filtered under reduced pressure, the COD value of the treated desizing wastewater was 200, and the COD removal rate was 90%.

Embodiment 2

[0023] Take by weighing 150g cationic starch and 300g ZSM-11 zeolite in the presence of 4.5g silane coupling agent KH570 to prepare a kind of cationic starch / zeolite cross-linked composite adsorbent material, under normal temperature with 75g cationic starch / zeolite cross-linked composite adsorbent and 15kg, The desizing wastewater with a COD value of 5000 was placed in a 50L agitator, mixed evenly, adsorbed for 40 minutes, and filtered with a filter press. The COD value of the treated desizing wastewater was 1000, and the COD removal rate was 80%.

Embodiment 3

[0024] Embodiment 3: take by weighing 5kg cationic starch and 10kg ZSM-11 zeolite in the presence of 150g silane coupling agent KH550 to prepare cationic starch / zeolite cross-linked composite adsorbent material, under normal temperature, 40kg cationic starch / zeolite cross-linked composite adsorbent and 5000kg The desizing wastewater with a COD value of 5000 was placed in a 10 cubic meter mixer to make it evenly mixed, adsorbed for 60 minutes, and filtered with a filter press. The COD value of the treated desizing wastewater was 800, and the COD removal rate was 84%.

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PUM

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Abstract

The invention discloses a biomass-based adsorbent and a method for treating desizing wastewater COD by using the biomass-based adsorbent. The method comprises the following steps: preparing a cationicstarch / zeolite cross-linked composite adsorption material from cationic starch and zeolite in the presence of a coupling agent, putting the cationic starch / zeolite cross-linked composite adsorption material and desizing wastewater into a stirrer at normal temperature, uniformly mixing the components, adsorbing the material for 10-60 minutes, and filtering the mixture, thereby reducing the COD ofthe desizing wastewater by 80% or above. The problems of environmental pollution and the like of desizing wastewater are solved, and the desizing wastewater COD biomass-based adsorbent has the advantages of low cost, simple preparation process, easiness in industrialization, no pollution and the like.

Description

Technical field: [0001] The invention relates to an adsorbent and a method for treating desizing wastewater COD, in particular to a biomass-based adsorbent and a method for treating desizing wastewater COD. Background technique: [0002] Nowadays, people regard the removal of COD from wastewater as a major goal, and they all want to remove it from water bodies. Oxidation is the most commonly used and only method, but it consumes too much energy. Oxidation is originally a process of energy production, but it is currently being used for An oxidation process constantly consumes extra energy, and large water treatment plants are shelved because they cannot afford electricity consumption. [0003] At present, the methods for removing COD from wastewater mainly include: ① Oxygenation, physical method: aeration, stirring, getting oxygen into the water, replenishing dissolved oxygen, and reaching the oxygen consumption of organic matter. This method takes a long time to process and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24C02F1/28
CPCB01J20/24B01J20/165C02F1/288
Inventor 邢国秀刘诗丽杨正龙
Owner LUDONG UNIVERSITY