Wastewater treatment and algal productivity in an integrated ponding system

Ibrahim Banat, Kazmer Puskas, Ismail Esen, Reyad Al-Daher
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引用次数: 31

Abstract

A pilot plant was constructed to investigate the use of integrated ponding systems for municipal wastewater treatment in arid regions. The main objectives of this study were to determine the wastewater treatment efficiency of this system and to investigate the algal productivity under various operational and environmental conditions.

Treatment efficiency was determined in the facultative and high-rate ponds which were operated in series at various water depths, organic loadings and detention times. Control ponds with fixed parameters were also operated. The results showed the efficiency of this system in removing organic content of the municipal wastewater. Removals of up to 95% BOD, 85% COD, 90% ammonia and >99% of the pathogenic indicator microorganisms were achieved. Equations relating to algae productivity. Secchi disk measurements, suspended solids measurements and algae counts were developed. Algae productivities of 150–300 kg ha−1 day−1 were obtained under favorable conditions. Generally, high productivities were obtained at low detention times and greater pond depths in high-rate ponds, and at high organic loading within the ranges investigated.

污水处理和藻类生产力在一个综合池塘系统
建立了一个试验工厂,以研究在干旱区使用综合池塘系统处理城市污水。本研究的主要目的是确定该系统的废水处理效率,并调查各种操作和环境条件下的藻类产量。测定了在不同水深、不同有机负荷和不同滞留时间下串联运行的兼性池和高倍率池的处理效率。固定参数的控制池也进行了操作。结果表明,该系统对城市污水中有机物的去除效果良好。达到了高达95%的BOD, 85%的COD, 90%的氨和>99%的病原指示微生物的去除率。与藻类产量有关的方程式。塞奇圆盘测量,悬浮固体测量和藻类计数的发展。在适宜条件下,藻类产量可达150 ~ 300 kg ha−1 day−1。一般来说,在高速率的池塘中,低滞留时间和较大的池塘深度以及在调查范围内的高有机负荷下,可以获得高生产力。
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