Disposable diaper belongs to a kind of personal hygiene product, which is mainly used for absorbing feces and urine excreted by infants while maintaining comfortable wearing, and being convenient and easy to carry, so it is widely used. Its main components are non-woven fabric, polymer water-absorbent resin, wood pulp fluff and plastic, plastic and non-woven fabric are in the outermost layer, wrapped in biodegradable wood pulp fluff and partially degraded polymer water-absorbent resin, making the product difficult to degradation, causing environmental pollution and reducing the useful life of the landfill.
In 2015, China passed the two-child policy, and the demand for babies disposable diaper will increase significantly. While promoting the booming diaper market, the solid waste of such products has increased significantly, and the situation is urgent. In order to turn such wastes into treasures, reuse not only reduces the disposal load of pollutants, but also saves resources. Taking disposable diaper and traditional cultivation substrates as examples, the polymer water-absorbent resin was mixed with traditional cultivation substrates, and pleurotus ostreatuss were grown in the above two substrates, and the reasonable addition amount of disposable diaper and polymer water-absorbent resins was screened out. At the same time, the degradation ability of pleurotus ostreatus to the substrate after adding the product and SAP, and the output of the entity were studied. Finally, the nutritional properties of the fruiting body in the SAP mixed substrate were studied, which provided a theoretical basis for the degradation of waste disposable diaper.
When the addition amount in disposable diaper matrix does not exceed 50%, the pleurotus ostreatus body can grow normally, and it will be inhibited if the content is higher than this. However, in order to promote the degradation of pleurotus ostreatuss to the substrate, the content of diapers should be ≤20%. After the cultivation of two-tidal pleurotus ostreatuss, the quality of the substrate can be reduced by 47%, and the concentration will not reduce the ability to degrade the substrate at different tide stages, that is, the concentration will always promote the growth of fruit bodies at different tide stages. The cellulose degradation rate is 68%, and the biological efficiency is 83%. After the cultivation of pleurotus ostreatuss, there will be a certain amount of bioavailable substances in the waste substrate, which can be reduced by up to 20% by adding disposable diaper substances. The degraded substrate of pleurotus ostreatuss ensures the separation and reuse of biodegradable wastes such as plastics, mainly due to its ease of separation. The waste after pleurotus ostreatus cultivation contains a lot of cellulase, the exo-glucanase activity can reach up to 0.154IU/ml, the endo-glucanase activity can reach 1.96IU/ml, and the cellulose whole enzyme activity can reach up to 0.154IU/ml. 2.37IU/ml, glucosidase activity can reach 0.015IU/ml, it can be used as a cheap and efficient biological fertilizer.
Although the utilization of disposable diaper mixed matrix by pleurotus ostreatus is only in the experimental stage, according to the analysis data, this method is bound to be widely used as a main method in the future.