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Preparation of waste potato residue/palygorskite composite adsorbent and application of adsorbent in treatment of potato starch processing wastewater

A technology of potato starch and composite adsorption, applied in the direction of adsorption water/sewage treatment, other chemical processes, chemical instruments and methods, etc., can solve the problems of high construction cost and treatment cost, achieve good promotion value, reduce cost, and simple process Effect

Inactive Publication Date: 2012-07-25
临泽县奋君矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to high construction costs and processing costs, the starch factory gave up investment

Method used

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  • Preparation of waste potato residue/palygorskite composite adsorbent and application of adsorbent in treatment of potato starch processing wastewater
  • Preparation of waste potato residue/palygorskite composite adsorbent and application of adsorbent in treatment of potato starch processing wastewater
  • Preparation of waste potato residue/palygorskite composite adsorbent and application of adsorbent in treatment of potato starch processing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 1. Preparation of potato waste residue / palygorskite composite adsorbent

[0040] (1) Select Linze palygorskite raw ore, dry it and crush it, pass through a 200-mesh sieve to become palygorskite clay powder for later use;

[0041] (2) Add palygorskite clay powder and fresh potato residue (taken from a company in Huining, Gansu) to distilled water at a mass ratio of 1:0.5, and stir to form a uniform mass concentration. 5% slurry, and ultrasonically dispersed for 30 minutes;

[0042] (3) Transfer the slurry to the hydrothermal reaction kettle. The filling volume of the hydrothermal reaction kettle is kept at 60%. The reaction temperature is 120°C and the carbonization time is 48h. After the carbonization reaction is completed, the product is naturally cooled and washed. Dried at 70°C and crushed to obtain a potato residue / palygorskite composite adsorbent.

[0043] 2. Treatment of potato starch processing wastewater

[0044] Source of wastewater: Wastewater from potato s...

Embodiment 2

[0049] 1. Preparation of potato waste residue / palygorskite composite adsorbent

[0050] (1) Select Linze palygorskite raw ore, dry it and crush it, pass through a 200-mesh sieve to become palygorskite clay powder for later use;

[0051] (2) Add palygorskite clay powder and fresh potato residue (taken from a company in Huining, Gansu) to distilled water at a mass ratio of 1:1, and stir to form a uniform mass concentration. 10% slurry, and ultrasonically dispersed for 30 minutes;

[0052] (3) Transfer the slurry to the hydrothermal reaction kettle. The filling volume of the hydrothermal reaction kettle is kept at 60%, the reaction temperature is 140°C and the carbonization time is 40h. After the carbonization reaction is completed, the product is naturally cooled and washed. Dried at 70°C and crushed to obtain a potato residue / palygorskite composite adsorbent.

[0053] 2. Treatment of potato starch processing wastewater

[0054] Source of wastewater: Wastewater from potato st...

Embodiment 3

[0059] 1. Preparation of potato waste residue / palygorskite composite adsorbent

[0060] (1) Select Linze palygorskite raw ore, dry it and crush it, pass through a 200-mesh sieve to become palygorskite clay powder for later use;

[0061] (2) Add palygorskite clay powder and fresh potato residue (taken from a company in Huining, Gansu) to distilled water at a mass ratio of 1:2, and stir to form a uniform mass concentration. 15% slurry, and ultrasonically dispersed for 30 minutes;

[0062] (3) Transfer the slurry to the hydrothermal reaction kettle. The filling volume of the hydrothermal reaction kettle is kept at 60%, the reaction temperature is 160°C and the carbonization time is 32h. After the carbonization reaction is completed, the product is naturally cooled and washed. Dried at 70°C and crushed to obtain a potato residue / palygorskite composite adsorbent.

[0063] 2. Treatment of potato starch processing wastewater

[0064] Source of wastewater: Wastewater from potato st...

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Abstract

The invention provides a self-circulation utilization technology for leftovers of potato starch processing. The self-circulation utilization technology comprises the steps of: ultrasonically dispersing palygorskite clay powder and potato residues according to the mass ratio of 1: (0.5-1.5) in water to form slurry; then, transferring the slurry into a hydrothermal reaction kettle, and carrying outcarbonization reaction for 6-48 hours at 120-200 DEG C; and after the carbonization reaction is finished, naturally cooling, washing, drying and crushing the product to obtain a waste potato residue / palygorskite composite adsorbent. Potato starch processing wastewater treated by using the adsorbent can completely reach a discharge standard of water pollutants for starch industry (GB25461-2010) under national regulation. According to the invention, the waste potato residues are fully utilized, the most difficult problem in treating potato processing wastewater at present is solved, and the mutual harmless treatment of the wastes obtained after the potato starch processing is realized, and the technology has a very good popularization value.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and relates to a technology for self-recycling of potato starch processing leftovers, in particular to a method for preparing a potato waste residue / palygorskite composite adsorbent; the invention also relates to the potato waste residue / palygorskite Application of Composite Adsorbent in Treatment of Potato Starch Processing Wastewater. Background technique [0002] Potato is a widely grown crop worldwide due to its large yield and strong adaptability. Potato starch is an important food, agricultural, breeding and industrial raw materials. However, in the production process of potato starch, on average, about 6.5 tons of potatoes are consumed for producing 1 ton of starch, about 20 tons of waste water are discharged, and about 5 tons of potato residues are discharged. According to the investigation of experts in potato storage and processing research positions in the modern agricul...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28
Inventor 张哲崇雅丽高淑玲李芳红杨翠玲张惠怡杨志旺雷自强
Owner 临泽县奋君矿业有限公司
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