Wastewater sludge generated from agro-industrial wastewater treatment plants is accepted as a good option for land application as a soil conditioner and substitute mineral fertilizers. However, the quality of the sludge sometimes posed a threat to the surroundings. The objective of the study is to evaluate the biochemical characteristics and fertilizer potential of brewery wastewater sludge for agricultural reuse. A field experiment was conducted in a randomized block design array with three replications using brewery wastewater sludge, and nitrogen, phosphorus and sulfur (NPS) containing commercial fertilizer along with control treatments. The result showed that sludge application significantly increased average above biomass production by 5.7% and 37.2% over the NPS and control plots, respectively. Also, the sludge-amended plot produced more grain yield of maize with 26.8% greater than the control. The brewery sludge temporary residual effect analysis revealed that the addition of the sludge led significant changes in soil pH reduction and soil electrical conductivity, total phosphorus, total nitrogen and total potassium increment as compared to others and background concentration. Similarly, lead and fecal coliform concentrations in the sludge-amended soil showed 150% and 24.4% increments, respectively, over the control. In general, the preliminary sludge temporary residual effect analysis showed an encouraging outcome on soil basic properties and maize crop productivity. Conversely, future long-term study is essential to monitor the effect of soil salinity, heavy metal and pathogen contaminations on soil and crop production.

中文翻译：

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啤酒厂污泥的质量，农学重要性及其对土壤特性的短期残留影响

从农业工业废水处理厂产生的废水污泥作为土壤改良剂和替代矿物肥料被认为是土地应用的良好选择。但是，污泥的质量有时会对周围环境造成威胁。该研究的目的是评估用于农业回用的啤酒废水污泥的生化特性和肥料潜力。使用啤酒废水污泥，含有商业肥料的氮，磷和硫（NPS）以及对照处理，以随机重复的块状设计阵列进行了三次重复实验。结果表明，污泥的施用使生物量以上的平均产量分别比NPS和对照样地分别提高了5.7％和37.2％。也，污泥改良区的玉米产量更高，比对照高26.8％。啤酒厂污泥的暂时残留效应分析表明，与其他污泥和背景浓度相比，污泥的添加导致土壤pH值降低和土壤电导率，总磷，总氮和总钾增量的显着变化。同样，污泥改良土壤中铅和粪大肠菌群的浓度分别比对照增加了150％和24.4％。通常，初步的污泥暂时残留效应分析显示出对土壤基本特性和玉米作物生产力的令人鼓舞的结果。相反，未来的长期研究对于监测土壤盐分，重金属和病原体污染对土壤和作物生产的影响至关重要。