Method of degrading waste film materials through yellow meal worms

A technology for Tenebrio molitor and membrane material, applied in the field of Tenebrio molitor degrading waste membrane materials, can solve the problems of harming the surrounding environment, high cost, low recovery and regeneration rate, etc., and achieve the effects of good consumption capacity, reduced molecular weight, and obvious effect.

Inactive Publication Date: 2017-11-07
TONGJI UNIV
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the landfilling of waste film materials will occupy a large amount of land resources. At the same time, the pollutants, bacteria and viruses in the waste film materials have the risk of harming the surrounding environment, and waste plastic products are processed by other physical or chemical methods. The recycling rate of the treatment is low, the cost is high, and the...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of degrading waste film materials through yellow meal worms
  • Method of degrading waste film materials through yellow meal worms
  • Method of degrading waste film materials through yellow meal worms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method practice for biodegrading waste membrane materials, specifically comprising the following steps:

[0035] (1) Preparation of waste membrane materials: After washing and fully drying the waste polyvinyl chloride (PVC) membrane materials from the sewage / wastewater treatment plant, divide them into sheets with a cutter, and spread them evenly on the The bottom of the container for cultivating Tenebrio molitor is set aside.

[0036] (2) Preparation of raw material Tenebrio molitor: put the insect body purchased from Shanghai Tenebrio molitor farm in a constant temperature incubator, and add enough feed to activate the activity of Tenebrio molitor. Three days later, the molting that may carry insect feces is removed by a hair dryer, and healthy Tenebrio molitors of similar size are screened out for use.

[0037] (3) Preparation of culture conditions: evenly put the Tenebrio molitor screened in step (2) into a constant temperature incubator, and cover part of the wa...

Embodiment 2

[0041] Sampling Tenebrio molitor after the end of the balance cycle, and observed with a stereomicroscope after pretreatment and dissection, the specific operation process of pretreatment and dissection is as follows: Soak Tenebrio molitor larvae in ethanol for 2 hours and freeze-dry them for 24 hours, so that the intestinal tract of mealworms It can be easily detached from other tissues, and then use a scalpel to remove the head from the second section behind the head of the worm, use tweezers to take out the entire intestinal tract in the worm, and observe it under a stereoscopic microscope. The photo was taken and the result is as Figure 4 shown. It can be observed that there is ingested waste PVC membrane material in the intestinal tract of Tenebrio molitor.

Embodiment 3

[0043] During the feeding cycle, another mealworm degradation unit was used to add wheat bran as the only auxiliary feed to investigate the effect of wheat bran on the degradation of waste PVC film materials by Tenebrio molitor. The amount of wheat bran added was 20% of the insect weight ~25% / 5d, the consumption rate of waste membrane materials is as follows Figure 5 As shown, under the condition that the initial number of insects is 400 and the initial plastic mass is about 6.8g, after 39 days, the mass of film material consumed by the Tenebrio molitor group with waste polyvinyl chloride film material as the only food is about 4.1g. g, Tenebrio molitor group with added wheat bran consumed about 5.3 g of waste PVC membrane materials, which indicated that adding wheat bran was beneficial for Tenebrio molitor to consume waste PVC membrane materials. As auxiliary feed, wheat bran provided Tenebrio molitor with a small amount of water, extra sugar and trace elements, thereby improv...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Number average molecular weightaaaaaaaaaa
Weight average molecular weightaaaaaaaaaa
Login to view more

Abstract

The invention relates to a method of degrading waste film materials through yellow meal worms. The method comprises the following steps that by using the characteristics of plastic ingestion of coleopteran, tenebrionidae and tenebrio yellow meal worms, under the condition that the temperature is 24-26 DEG C and the humidity is 60-75%, by adding supplementary fodder, yellow meal worms gnaw waste polyvinyl chloride films in the processing process of dirt/waste stain/waste water, biodegradation is conducted in intestinal canals of the yellow meal worms, waste film materials of 4.0-5.5 g are effectively degraded within 40 days at last, and the average degrading rate of yellow meal worms at per gram is 2.29-2.71 mg/d. According to the method of degrading the waste film materials through the yellow meal worms, the problem that the used waste polyvinyl chloride film materials are difficult to degrade and process is solved, under the situations of low energy consumption and without secondary pollution, effective biodegradation is conducted on the waste polyvinyl chloride films, by adding the supplementary fodder, food consumption of the yellow meal worms for the waste film materials can be obviously increased, the degrading ability of the yellow meal worms is accelerated, and meanwhile, the potential biological value of the yellow meal worms which serve as warehouse pests is effectively used.

Description

technical field [0001] The invention belongs to the field of solid waste treatment and relates to a method for Tenebrio molitor to degrade waste membrane materials. Background technique [0002] In recent years, with the continuous construction and development of cities, more and more wastewater with complex components has entered urban sewage / wastewater treatment plants. However, many traditional biological water treatment processes have also exposed many shortcomings, such as large footprint and limited by the site. In this case, the use of membranes for sewage / wastewater treatment has attracted attention and has been widely used at home and abroad. The objects of treatment have also expanded from reclaimed water reuse, fecal sewage treatment, etc. to industrial wastewater treatment and other fields. However, with the expansion of its scale, the related disadvantages have gradually emerged, and the disposal of discarded or polluted membranes has become a big problem. If ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B09B3/00A01K67/033A23K50/90
CPCB09B3/00A01K67/033A23K50/90
Inventor 张亚雷褚华强周雪飞彭博宇顾敏燕张勇
Owner TONGJI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap