小型城市污水处理厂活性污泥处理效率评价

Q3 Environmental Science

Ekologia Bratislava Pub Date : 2022-09-01 DOI:10.2478/eko-2022-0028

Marijana Bubalo, Ivana Šumelj, Katarina Herceg, N. V. Medvidović

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引用次数: 0

摘要

摘要本文分析了一个小型污水处理厂（WWTP）使用活性污泥的处理效率，以检验输入的未经处理的城市污水成分变化的影响。分析了2018年和2019年期间废水的COD、BOD5和TSS值以及负荷的特征。采用混合液-悬浮固体（MLSS）、污泥体积指数（SVI）、食品微生物比（F/M）、污泥龄和水力停留时间（HRT）对污水处理厂的性能进行了评价。2018年去除率为TSS>BOD5>COD，2019年去除率依次为BOD5>TSS>COD。然而，2019年COD、BOD和TSS的去除效率较高，这与MLSS和SVI指数的振荡值较低有关。测定了原水和污水的生物降解率、工厂可靠性因子（RF）和当量居民数（ENI）。此外，还对使用活性污泥的小型污水处理厂的经济成本进行了评估和讨论。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Assessment in treatment efficiency of a small-scale municipal wastewater treatment plant with activated sludge

Abstract In this paper, the treatment efficiency of a small-scale wastewater treatment plant (WWTP) with activated sludge was analysed in order to examine the impact of variations in the composition of incoming raw municipal wastewater. The characteristics of the wastewater were analysed with respect to COD, BOD5 and TSS values and loading during the two years, 2018 and 2019. The mixed liquid suspended solid (MLSS), sludge volume index (SVI), food to microorganism ratio (F/M), sludge age and hydraulic retention time (HRT) were used for evaluation of the performance of WWTP. Removal percentage is in the order of TSS > BOD5 > COD during 2018, while in 2019 is in the order BOD5 > TSS > COD. However, better values of removal efficiency for COD, BOD and TSS are obtained in 2019, which is connected to lower oscillation values of MLSS and SVI index. Biodegradability ratio of raw and treated wastewater, plant reliability factor (RF) and equivalent number of inhabitant (ENI) were determined. In addition, the economic cost of small-scale wastewater treatment plant (WWTP) with activated sludge was evaluated and discussed.

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来源期刊

Ekologia Bratislava Environmental Science-Ecology

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

10 weeks

期刊介绍： The Journal Ecology (Bratislava) places the main emphasis on papers dealing with complex characteristics of ecosystems. Treated are not only general, theoretical and methodological but also particular practical problems of landscape preservation and planning. The ecological problems of the biosphere are divided into four topics: ecology of populations: study of plant and animal populations as basic components of ecosystems, ecosystem studies: structure, processes, dynamics and functioning of ecosystems and their mathematical modelling, landscape ecology: theoretical and methodical aspects, complex ecological investigation of territorial entities and ecological optimization of landscape utilization,