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Vermicomposting of sludge from a malt house.
Waste Management ( IF 7.1 ) Pub Date : 2020-09-06 , DOI: 10.1016/j.wasman.2020.08.027
Ales Hanc 1 , Tereza Hrebeckova 1 , Petr Pliva 2 , Tomas Cajthaml 3
Affiliation  

Malting sludge is waste that could be used as a good soil conditioner after proper treatment. In the current study, the feasibility of vermicomposting malting sludge and its mixtures with straw pellets on the basis of physico-chemical and biological properties was verified. A vermicomposting system with continuous feeding of earthworms Eisenia andrei was used. The greatest number and biomass of earthworms was found in the variant with 25% malt house sludge + 75% straw pellets (on average of all layers: 320 earthworms/kg and 35 g/kg, respectively), followed by a variant with 50% malt house sludge + 50% straw pellets (on average of all layers: 47 earthworms/kg and 13 g/kg, respectively), indicating that a minimum of 50% (vol.) straw pellets is necessary for successful vermicomposting of malting sludge. Most earthworms lived in the youngest upper layer (42% and 52% of total number and earthworm biomass, respectively). On the contrary, the oldest bottom layers (final vermicomposts) after 180 days of vermicomposting were characterized by maturity, indicating lesser contents of microorganisms and enzyme activity. These vermicomposts had favorable agrochemical properties (pH = 7.8, EC = 1.2 mS cm−1, C/N = 11, Ptot = 1.23%, Ktot = 2.55%, Mgtot = 0.42%). The proportion of the available contents in the total contents were 10%, 59%, and 19% for P, K, and Mg, respectively.



中文翻译:

来自麦芽屋的污泥的mi污堆放。

发芽的污泥是经过适当处理后可以用作良好土壤改良剂的废物。在当前的研究中,基于理化和生物学特性,验证了将com麦芽污泥及其与秸秆颗粒混合的可行性。连续喂食feedingEisenia andrei的ver堆肥系统被使用了。变种中发现number的数量最多,生物量最大,其麦芽房屋污泥为25%+秸秆颗粒为75%(平均每层分别为:earth / kg和35 g / kg),其次是50%麦芽房污泥+ 50%的秸秆颗粒(平均每层分别为47 earth / kg和13 g / kg),表明成功地对麦芽污泥进行ver堆肥至少需要50%(体积)的秸秆颗粒。多数live生活在最年轻的上层(分别占and总数和biomass生物量的42%和52%)。相反,在堆肥180天后最老的底层(最终堆肥)以成熟为特征,表明微生物含量和酶活性较小。这些ver堆具有良好的农业化学特性(pH = 7.8,EC = 1.2 mS cm-1,C / N = 11,P tot  = 1.23%,K tot  = 2.55%,Mg tot  = 0.42%。磷,钾和镁的有效含量在总含量中所占的比例分别为10%,59%和19%。

更新日期:2020-09-06
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