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Intelligent energy exploitation from sewage

机译：污水的智能能源开发

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摘要

Wastewater treatment plants are distinguished by considerable electricity consumption; on the other hand, organic contents of sewage allow for local energy recovery from, e.g. anaerobic digestion of sludge and subsequent use of resulting biogas in a combined heat and power unit. Supplementary incineration of dehydrated sludge in a local boiler feeding a steam turbine/generator set can provide another quantity of electricity and, at the same time, exonerates from further treatment/deposition of infectious sludge. Waste heat from both steam circuit and combustion engine can contribute to sludge drying, thus significantly increasing its heating value. Furthermore, large expanse and usual location remote of residential areas make sewage plants eligible for harvesting renewable energy. As innovative approach this study exposes that – even if all techniques considered for energy harvest in particular are state-of-the-art – under proper combination/design and intelligent operation of devices and processes, sewage plants can be widely brought towards independence of external energy supply under reasonable economic conditions.
机译：废水处理厂的特点是耗电量大。另一方面，污水中的有机物允许从例如污泥的厌氧消化，以及随后在热电联产装置中使用产生的沼气。在为蒸汽轮机/发电机组供气的本地锅炉中补充焚烧脱水污泥可提供其他电量，同时，可避免进一步处理/沉积传染性污泥。来自蒸汽回路和内燃机的废热可促进污泥干燥，从而显着提高其热值。此外，宽阔的居民区和通常偏僻的地点使污水处理厂有资格收集可再生能源。作为一项创新的方法，这项研究表明，即使适当考虑了能量收集的所有技术都是最新技术，在适当的组合/设计以及设备和过程的智能操作下，污水处理厂也可以广泛地实现外部独立性。在合理的经济条件下提供能源。

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