Results 81 to 90 of about 78,097 (269)
Jingshui jishu【目的】针对南方某污水处理厂进水化学需氧量(COD)浓度长期偏低问题，本文探究外水入侵与管网结构缺陷对污水系统运行效能的制约机制，提出针对性治理策略以提升污水处理效能。【方法】本文通过河道降水位协同水质水量在线监测技术，在截污干管及箱涵布设22个在线监测点，结合河道水位动态调控试验，分析外水入侵特征；利用管网物探排查与水力特征分析，识别倒灌风险点及管网淤堵问题。【结果】二期污水处理厂进水COD浓度与河道水位呈显著负相关，溯源发现8处倒灌风险点，其中2处常水位(1.744 m ...
Li Wanrong +3 more
doaj +1 more source
Energy recovery from solid waste. Volume 2: Technical report [PDF]
A systems analysis of energy recovery from solid waste demonstrates the feasibility of several current processes for converting solid waste to an energy form.
Dalton, C., Huang, C. J.
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Ammonia based sanitation technology [PDF]
, 2007 Water-borne sanitation of toilet waste is not a viable option for the estimated 2.6 billion people that lack improved sanitation throughout the world.
Nordin, Annika
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Veterinary Record, EarlyView.Abstract Background This study describes the development of a data landscape analysis protocol that identifies and characterises animal health data sources to support key regulatory activities throughout the life cycle of veterinary medicines. Methods The protocol included: development of criteria to identify data sources; selection of variables to ...
Ewa Pacholewicz +4 more
wiley +1 more source
Jingshui jishu【目的】水在社会文明中扮演着重要的角色，城市供水管网作为城市生产生活的基础设施之一，是城市生态系统中的大动脉。但是供水管网因为管道自身属性、管道施工、管内工况突变和环境影响等原因易发生漏损，因此，针对城市供水管网漏损检测、定位及控制策略的研究显得尤为紧迫。【方法】本文通过梳理供水管网漏损检测、定位和控制的研究进展，结合国内供水管网漏损现状，提出了管网独立分区计量、软硬件联合检漏、压力管理控制漏损的综合策略，具体为分区计量，实现供水管网漏损监控；构建管网漏损定位模型 ...
Yuan Qiuhong +5 more
doaj +1 more source
SMART CITY CONTROL ROOMS: The Rewiring of Local Governance Landscapes in India
International Journal of Urban and Regional Research, EarlyView.Abstract Smart city control rooms are prominent components of the smart city discourse. They embody a long‐standing dream to visualize and manage multiple urban processes in real time through the collation of data flows. Previous research has produced important insights into the design, construction and operation of these facilities.
Devika Prakash +2 more
wiley +1 more source
基于可解释性机器学习的餐厨垃圾浆液厌氧产气性能与关键影响因素
Jingshui jishu【目的】餐厨垃圾浆液厌氧消化系统因进料特征复杂、多因素动态耦合，使得其预测与调控具有较大挑战。【方法】为实现工业规模厌氧反应过程的精准管理与优化，本文收集2019年—2023年上海某工业规模厌氧反应器运行数据，分别利用随机森林、梯度提升、K邻近回归与人工神经网络(ANN)建立产气预测模型，并通过沙普利加和解释(SHAP)算法量化各输入变量对产甲烷效率的贡献与抑制作用。【结果】梯度提升模型在测试集中R 2 最高，均方误差(MSE)与平均绝对误差(MAE)最低 ...
Cui Jie, Zhang Bo, Wang Rongjian
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Guide to on-site wastewater management for industrial and commercial establishments and other institutions: guide for hotel and restaurant owners and managers in Kurunegala, Sri Lanka [PDF]
Wastewater treatmentWater ...
Dissanayake, Priyanka, Tennakoon, M.
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Future Projections of Urban Waste Flows aand their Impacts in African Metropolises Cities [PDF]
, 2011 This paper presents future trends of urban wastes and their impacts on the environment of African cities using plausible mitigation scenarios. To accomplish this, an integrated dynamic model for urban waste flows was developed, tested, calibrated and ...
Leemans, R., Mol, A.P.J., Oyoo, R.
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THE AESTHETICS OF URBAN METABOLISM: Landscape, Design and the Politics of In/Visibility
International Journal of Urban and Regional Research, EarlyView.Abstract In this article, we chart the evolving aesthetic contours of urban metabolism across London, focusing on the River Lea and Thamesmead to the north and south of the River Thames, respectively. We begin in the nineteenth century, when these two sites formed critical nodes within a new sewerage system that relegated the city’s circulatory flows ...
Ben Platt, Zuhri James
wiley +1 more source