Economics of using municipal wastewater irrigation of willow coppice crops

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING Biomass & Bioenergy Pub Date : 1997-01-01 DOI:10.1016/S0961-9534(96)00058-X

H. Rosenqvist , P. Aronsson , K. Hasselgren , K. Perttu

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引用次数: 122

Abstract

Until now, treatment of municipal wastewater in Sweden has mainly consisted of removal of phosphorus and easily biodegradable organic substances. Most of the nitrogen has been released in the water phase to the recipients. The recently introduced legal requirements to remove also nitrogen have encouraged the recirculation approach, meaning that, before chemical phosphorus precipitation, municipal wastewater can be used as an adequate nutrient resource for biomass production. The general aim of this paper is to illustrate a realistic way of handling and utilising this resource in a recirculation system, applying a combination of waste water treatment and biomass production.

The economic calculations (based on nitrogen, which is a topical problem at the treatment plants) show that the costs for a conventional technical system for removal of nitrogen and phosphorus in wastewater (70–180 SEK (kgN)⁻¹) (1 USD = 6.70 SEK) can allow a good margin for investment, operation and management of an irrigation system for wastewater treatment in willow cultivation. The calculations show that treatment costs in willow cultivations vary depending on type of system and size. Nitrogen application rate also has a major impact on costs.

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利用城市污水灌溉柳林作物的经济性

到目前为止，瑞典的城市污水处理主要包括去除磷和易生物降解的有机物。大部分氮在水相中被释放到受者身上。最近出台的去除氮的法律要求鼓励了再循环方法，这意味着，在化学磷沉淀之前，城市废水可以用作生物质生产的充足营养资源。本文的总体目的是说明在再循环系统中处理和利用这种资源的现实方法，应用废水处理和生物质生产的组合。经济计算(以氮为基础，这是处理厂的一个热门问题)表明，去除废水中氮和磷的传统技术系统的成本(70-180瑞典克朗(kgN)−1)(1美元= 6.70瑞典克朗)可以为柳树种植废水处理灌溉系统的投资、运营和管理提供良好的利润。计算表明，柳树栽培的处理费用因系统类型和大小而异。氮肥施用量对成本也有重大影响。

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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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.