Method of degrading waste film materials through yellow meal worms

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 ...

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 treatment process is also easy to discharge waste gas, resulting in secondary pollution

In addition, for the polyvinyl chloride film made of plastic, in addition to its own moderate toxicity, its special structure also brings certain difficulties to physical and chemical degradation methods, which also shows that the physical and chemical methods to seek Breakthroughs are very limited

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