Method for producing liquid mulching film from potato starch waste slag and liquid

A potato starch, liquid mulching film technology, applied in chemical instruments and methods, organic fertilizers, fertilizer mixtures, etc., can solve the problems of perishable and deteriorating palatability, high treatment costs, and unsatisfactory water quality treatment effects, and achieve one-time fixed assets. Low input, promote germination and root growth, reduce the effect of soil water evaporation

Inactive Publication Date: 2010-07-28
XICHANG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in production practice, the use of potato starch waste to directly feed livestock is not widely accepted by farmers due to its perishability and poor palatability.
Dehydration, drying, and granulation of potato starch slag are directly processed into pelleted feed. Due to the low protein content, the high cost of dehydration and drying processing is not widely used by enterprises, and the conversion resistance is large.
[0004] Due to the high COD of potato starch production wastewater, it is difficult to treat. Domestic potato companies have adopted various treatment methods but the effect is not good. For example, adding chemical flocculants is expensive, and the COD

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Raw material pretreatment: Weigh 5000g of potato residues with a water content of 80%, put them into a high-temperature resistant container, gelatinize at a temperature of 90°C-100°C for 1 hour, and stir once every 10 minutes to make the gelatinization uniform. Cool to room temperature after gelatinization. Weigh 250g of sodium bicarbonate and put it into a container containing 600g of potato waste liquid, until it is completely dissolved, then slowly add it into the gelatinized potato waste, stir while adding, until the two are evenly mixed, at this time, the pH of the potato residue is Adjust to about 7 and reserve.

[0028] 2. Film-forming agent (I) pretreatment: Weigh 120g of industrially pure polyvinyl alcohol, put it into 907g of potato waste liquid, stir once every 10 minutes, make it fully swell until the polyvinyl alcohol is evenly suspended in the In waste, this process takes about 120 minutes. After swelling, put the container in a constant temperature w...

Embodiment 2

[0031] 1. Pretreatment of raw materials: Weigh 5000g of potato residues with a water content of 85%, put them into a high-temperature resistant container, gelatinize at a temperature of 90°C-100°C for 1 hour, and stir once every 10 minutes to make the gelatinization uniform. Cool to room temperature after gelatinization. Weigh 230g of sodium bicarbonate and put it into a container containing 600g of potato waste liquid until it is completely dissolved, then slowly add it into the gelatinized potato waste, and stir while adding until the two are evenly mixed. At this time, the pH of the potato residue is Adjust to about 7 and reserve.

[0032] 2. Film-forming agent (I) pretreatment: take 130g of industrially pure polyvinyl alcohol, put it into 907g of potato waste liquid, stir once every 10 minutes, make it fully swell, until the polyvinyl alcohol is evenly suspended in the In waste, this process takes about 120 minutes. After swelling, put the container in a constant temperatu...

Embodiment 3

[0035] 1. Raw material pretreatment: Weigh 1200g of tobacco powder or Eupatorium adenophorum pulverized powder after crushing the leftovers of rebaked tobacco leaves with a water content of 15%, add 3800g of potato waste liquid or ordinary tap water, put it into a high-temperature resistant container, and heat it at 90 High-temperature gelatinization at ℃-100℃ for 1 hour, stirring once every 10 minutes to make the gelatinization uniform, and cool to room temperature after gelatinization. Weigh 150g of sodium bicarbonate and put it into a container containing 600g of potato waste liquid or ordinary tap water until it is completely dissolved, then slowly add it into the gelatinized powder, and stir while adding until the two are evenly mixed. Adjust the pH to about 7 and set aside.

[0036] 2. Film-forming agent (I) pretreatment: Weigh 130g of industrially pure polyvinyl alcohol, put it into 907g of potato waste liquid or ordinary tap water, and stir once every 10 minutes to mak...

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PUM

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Abstract

The invention aims to research, develop and produce liquid mulching film from potato starch waste slag and liquid. In a potato starch production process, a large amount of waste slag and liquid is produced. The long-termed piling of the waste slag and the direct discharge of wastewater severely affect the surrounding environment. Because the waste slag contains a large amount of water and the waste liquid contains a large amount of organic materials, the treatment cost of pure physical, chemical and biological processes is high, and the benefit is low. For the two properties of the waste slag and liquid, the method uses the characteristics of the waste slag and liquid of high organic material content in agriculture, and produces the waste slag and liquid into an airtight protective agent capable of being spraying on the soil surface through the treatment of film former, stable synthetic agent, crosslinker, initiator, fungicide and endothermic agent formulated by dissolving the waste liquid after the high-temperature pasting of the waste slag; and the temperature of the soil with the protective agent sprayed on is improved, the water evaporation is weakened, and the effect equal to that of mulching film covering is achieved. When being used together with weedicide and NPK fertilizer, the method has multiple benefits, such as weeding, fertilizer application and nutrient release.

Description

Technical field [0001] The invention relates to a method for producing liquid plastic film by using waste residue and waste liquid produced in the potato starch production process as raw materials, and belongs to the field of agricultural product deep processing waste utilization for agricultural plastic film production. Background technique [0002] In the production process of potato starch, a large amount of waste residue and waste water rich in starch, cellulose, protein, tannin and resin will be produced. For every 1000kg of potatoes processed, about 770kg of watery waste residue will be discharged, equivalent to 150kg of dry residue, and about 1000kg-1500kg of waste water will be discharged. The COD of water quality is as high as 20000-40000mg / L. [0003] At present, potato production enterprises pile up waste residues around the factory area. Except for a small part that is directly used by farmers in the factory area as livestock feed, most of them are piled up for a...

Claims

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Application Information

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IPC IPC(8): C09K17/52C09K101/00C09K103/00
Inventor 王志民沈飞蔡光泽陈开陆袁颖刘洪
Owner XICHANG COLLEGE
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