School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
Int J Environ Res Public Health. 2019 Nov 27;16(23):4737. doi: 10.3390/ijerph16234737.
Population growth and social changes have recently contributed to an exaggerated increase in kitchen wastes in China. Vermicomposting has recently been recognized as an effective and eco-friendly method of organic waste treatment through the combination of earthworms and microbes. However, the influence of salt in kitchen wastes on vermicomposting have been unknown. The goal of this study was to analyze the influence of different salinities on earthworms () and the products during the vermicomposting of kitchen wastes. In our research, kitchen wastes were divided into four different salinities: 0% (A), 0.1% (B), 0.2% (C) and 0.3% (D). The chemical characters of substrates and earthworm growth were measured on the 14th day and the 28th day of composting. Our results show that the high salinity (measured >0.2%) prevented earthworms from properly growing and had negative effects on quality of products in composting. T2 (measured salinity = 0.2%) had the highest average body weight, nitrate nitrogen, and available phosphorus. Thus, the salinity of kitchen wastes should be pretreated to less than 0.2% before vermicomposting.
人口增长和社会变革导致中国厨房垃圾最近急剧增加。蚯蚓堆肥最近被认为是一种有效的环保有机废物处理方法，通过蚯蚓和微生物的结合。然而，盐度对厨房垃圾蚯蚓堆肥的影响尚不清楚。本研究的目的是分析不同盐度对蚯蚓（）和堆肥过程中产物的影响。在我们的研究中，厨房垃圾分为四个不同盐度：0%（A）、0.1%（B）、0.2%（C）和 0.3%（D）。在堆肥的第 14 天和第 28 天，测量了基质的化学性质和蚯蚓的生长情况。我们的结果表明，高盐度（测量值>0.2%）会妨碍蚯蚓正常生长，并对堆肥产品质量产生负面影响。T2（测量盐度=0.2%）的平均体重、硝酸盐氮和有效磷最高。因此，厨房垃圾的盐度在进行蚯蚓堆肥前应预处理至 0.2%以下。
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