Efficient heavy metal recycling and water reuse from industrial wastewater using new reusable and inexpensive polyphenylene sulfide derivatives

Heavy metal(HM)pollution is a serious environment problem.Recovering HM from industrial wastewater by efficient adsorbents is a sustainable method due to recycling HM and acquiring reusable water.However,popular efficient adsorbents are usually expensive or non-reusable.In this paper,methods of efficient HM recycling and water reuse from industrial wastewater were developed using efficient adsorbents,new polyphenylene sulfide derivatives,which are recyclable and stable in an acidic,alkaline or oxidative aqueous solution.Moreover,they can efficiently and quickly adsorb HM ions.The maximum adsorption capacities of these adsorbents for HM ions are at the range from 51.3-184.2 mg·g^(-1).The adsorption equilibrium times of them for HM ions are at the range from 10 to 80 min.Therefore,this paper suggests sustainable methods of HM recovery and water reuse from industrial wastewater.

中国英文学术期刊品牌建设的路径思考--以Water Science and Engineering国际化实践为例

文章阐述了我国英文学术期刊品牌建设面临的挑战,并以英文刊Water Science and Engineering的品牌建设实践为例,分析了我国英文学术期刊品牌建设的有效路径。研究表明,英文学术期刊可以从找准定位和特色、控制学术质量、构建融媒体新生态环境、依靠专家资源以及坚持中国特色的国际合作等方面,加强期刊的品牌建设,建立期刊在国际学术和出版领域的影响力和权威性,从而为中国创办的英文学术期刊争取更多的国际话语权。

Performance of a Horizontal Flow Constructed Reed Bed Filter for Municipal Wastewater Treatment: The Case Study of the Prototype Installed at Gaston Berger University, Saint-Louis, Senegal

In Saint-Louis, Senegal, a constructed wetland with horizontal flow reed beds (FHa and FHb) has demonstrated significant efficacy in treating municipal wastewater. Analyzing various treatment stages, the system showed only a slight temperature variation, from an influent average of 26.3°C to an effluent of 24.7°C. Electrical conductivity decreased from 1331 mS/cm to 974.5 mS/cm post-primary treatment, with suspended solids (SS) dramatically reduced from 718.9 mg/L to 5.7 mg/L in the final effluent. Biochemical oxygen demand (BOD5) and chemical oxygen demand (COD) saw a notable decrease, from initial levels of 655.6 mg/L and 1240 mg/L to 2.3 mg/L and 71.3 mg/L, respectively. Nitrogenous compounds (N-TN) and phosphates () also decreased significantly, indicating the system’s nutrient removal capacity. Microbiological analysis revealed a reduction in fecal coliforms from 7.5 Ulog/100ml to 1.8 Ulog/100ml and a complete elimination of helminth eggs. The presence of Phragmites and Typha was instrumental in enhancing these reductions. The system’s compliance with the Senegalese standards for disposal into natural environments, WHO recommendations for unrestricted water reuse in irrigation, and the European legislation for water reuse was established. The effluent quality met the stringent criteria for various classes of agricultural reuse, illustrating the system’s potential for sustainable water management. This wetland model presents a robust solution for water-stressed regions, ensuring environmental protection while supporting agricultural needs. The study calls for ongoing research to further refine the system for optimal, reliable wastewater treatment and water resource sustainability.

Design and Operation of the Printing and Dyeing Wastewater Treatment Project by Combination of Coagulation Sedimentation - Hydrolytic Acidification with Aeration Tank - Biological Aerated Filter - Active Sand Filter

In order to protect quality of Baiyangdian surface water and Gaoyang groundwater,the project is applied to process printing and dyeing wastewater that contains complicated compositions,high concentrations of organics and SS,and lots of pollutants difficult to degrade by microorganism. The process and operating parameters of project are optimized and debugged,and its economic and environmental benefits are analyzed.The results show that the process of coagulation sedimentation-hydrolytic acidification with aeration tank-biological aerated filter-active sand filter is applied in Gaoyang Sewage Treatment Plant. The design scale of sewage treatment plant is 120000 m^3/d. The influent is as following: COD is 669mg/L; SS is 424mg/L; NH_3-N is 8.83mg/L; TP is 6.03mg/L. After the process,the best removal rates of COD,SS,NH_3-N and TP are 93. 5%,98. 8%,97. 1% and 96. 2%,respectively. The various indexes of effluent water complied with standard A of the first order in Pollutants Emission Standard of Urban Wastewater Treatment Plant( GB 18918-2002). The processing cost is only 0. 807 yuan/m^3. As a result,the project construction and operation not only improve the environment,but also promote regional economic development. Process design and operating parameters provide an important reference value for the printing and dyeing wastewater treatment industry.

Ecological engineering land treatment systems──A new development in China

This paper elucidated the necessity and possibility of developing the technology of land treatment on the basis of the analysis of shortage and pollution status of water resources in China.The historical development of this technology in the world was briefly reviewed and the distinction between land treatment and conventional wastewater irrigation was discussed in details. The fundamental characteristics and functions as well as the integrity and compatibility of this ecological engineering were also summarized. It was finally concluded that this technology for wastewater treatment has broad prospects of application in China.

废水处理中水质监测参数的实时预测研究

针对污水处理厂生化池中参数监测智能化水平不高、人力耗费较大的问题,提出基于麻雀算法-长短期记忆神经网络(Sparrow Search Algorithm-Long Short Term Memory Network,SSA-LSTM)的水质参数预测模型。以污水处理过程中好氧区溶解氧(Dissolved Oxygen,DO)、好氧区混合液悬浮固体(Mixed Liquid Suspended Solids,MLSS)质量浓度、缺氧区DO、缺氧区氧化还原电位(Oxidation-Reduction Potential,ORP)、厌氧区DO和厌氧区ORP 6个关键指标为数据样本,进行实例研究。将SSA-LSTM的预测结果与长短期记忆神经网络(Long Short-Term Memory Network,LSTM)、粒子群算法(Particle Swarm optimization-Long Short Term Memory Network,PSO-LSTM)、深度森林以及支持向量机进行对比分析,结果显示:SSA-LSTM在6个参数上的均方误差(EMSE)和决定系数(R2)均表现出更好的预测性,预测精度最高。

新工科背景下教学创新设计与实践——以给排水科学与工程专业水质工程学(二)课程为例

水质工程学(二)是给排水科学与工程专业本科生的必修核心课程,与我国生态文明建设重大战略需求紧密相关,课程改革对培养解决复杂工程问题和适应新时代专业需求的卓越拔尖人才具有重要意义。针对传统课程教学的问题和痛点,该课程围绕教学改革与创新的目标,坚持多维度创新与持续改进,包括课程思政融入日常教学;教学内容立足国家需求,聚焦学科前沿,注重学科交叉;教学方式上采用启发互动性的教学方法;充分发挥“双师型”“双导师型”的教师团队优势;采用多元化的教学评价体系,多维度考评教学效果。该课程创新特色明显、成效显著,经行业评价和实践检验,创新成果具有较强的辐射推广应用价值。

OBE理念下给排水科学与工程专业实验教学体系探讨——以广东工业大学给排水科学与工程专业为例

给排水科学与工程专业实验教学是工程教育认证的重要环节,是高校本科教学体系的重要支撑,是培养学生分析问题、解决问题和提高动手能力的重要途径。构建完善的专业实验教学体系是给排水科学与工程专业基于OBE理念提升大学生专业知识和专业技能的关键途径,且有利于加强对大学生创新意识、创新能力、协助精神的培养。以近三年来广东工业大学给排水科学与工程专业的实验教学改革为例,探讨了地方院校基于OBE理念构建专业实验教学体系的措施。

面向工程教育专业认证的“水质工程学”课程改革——以强化支撑“解决复杂工程问题”的持续改进为例

针对“水质工程学”课程教学在支撑给排水科学与工程专业毕业要求过程中存在的问题,实施了以强化工程思维为导向的“水质工程学”课程改革。通过结合现行的翻转课堂的教学设计,建立“课堂实例分析+课后方案设计+综合性考核”的教学模式,并结合“水厂课程设计”和“污水处理厂课程设计”的实践环节进行知识点扩展和工程思维强化,形成了适应于院校给排水科学与工程专业水处理方向专业技术人才的多环节培养模式,结果表明,课程改革实施方案科学合理,实施后有效提升了学生对毕业要求分指标点中“解决给排水科学与工程专业的复杂工程问题”方面的达成度,符合工程教育认证下专业核心课程持续改进的要求。

生态文明思想融入给排水科学与工程专业人才培养的创新与实践

生态文明建设是关系人民福祉、关乎民族未来的千年大计。新时代生态文明建设对给排水科学与工程专业人才培养提出新的要求,要求我们在教育教学中践行生态文明理念,培养符合国家战略发展新需求、适应国际新形势、具有良好生态文明素养的专业人才。基于此,该文围绕从加强教师队伍建设、修订人才培养方案、优化课程体系、改革教学方法、加强实践教学和重视国际化人才培养6个方面全方位、多层次地将生态文明思想有效融入给排水科学与工程专业人才培养中进行改革和创新,以培养大学生的生态文明意识和提升生态文明建设能力,满足新时代工程人才对生态文明教育的需求,为助力生态文明建设和构建美丽中国提供兼具专业知识和生态素养的复合型一流人才。

基于新工科人才培养的“水处理微生物学”教学改革探讨

随着工程教育的全球化和对高素质工程人才日益迫切,复合型新工科人才的培养已成为教学改革的核心。在给排水科学与工程专业中,核心课程如水处理微生物学的教学策略也亟待与时俱进。本文分析了水处理微生物学课程的最新发展趋势,并结合新工科背景,提出了一系列教学方案、教学方法和培养模式的创新策略。同时,还对课程的考核方式进行了探讨和建议,旨在更好地评估学生的学习成果。这些建议不仅注重培养学生的问题解决技巧、工程思维和项目管理能力,更旨在打造一个注重实践与创新的学习环境,培养出未来工程领域的先锋人才。

基于文献计量学解析给排水科学与工程专业教学改革领域研究进展

为探明我国给排水科学与工程专业(给排水专业)教学改革领域研究现状及发展趋势,结合2013—2022年收录在CNKI数据库的给排水专业教学改革相关文献,对发文总量及年发文量、作者及合作关系、机构及合作关系、期刊来源以及关键词共现图谱、聚类图谱、突现图谱、时间线图谱、时区图谱等进行了分析,结果表明:2013—2022年CNKI数据库共收录给排水专业教学改革相关文献567篇,年发文量整体呈现上升趋势;文献涉及315位作者,其中60位作者为核心作者;文献涉及169家机构,其中62家机构为核心机构;《教育教学论坛》和《给水排水》是给排水专业教学改革论文的主要期刊载体;教学改革、人才培养、实践教学是中介中心性和频次较高的关键词,也是给排水专业教学改革领域的核心关键词;新工科、课程思政和教学团队是近年给排水专业教学改革领域研究的热点方向。

水工程施工课程教学方法探讨

施工的知识和技能对于从事相关工程实践的给排水科学与工程专业的学生非常重要。水工程施工是一门偏工程应用的课程,具有涉及面广和专业性强等特点,使得该课程很难取得理想的教学效果。基于教学实践,结合高等教育学和高等教育心理学,系统提出适用于水工程施工课程的具体教学方法,包括构建联系法、兴趣导学法、多媒体和案例教学及翻转课堂等,可为水工程施工的教学给予启迪,同时也可为其他类似综合专业课程的教学方法提供借鉴和参考。

基于水科学与水工程的地方高校科普基地构建

地方高校是社会科普力量的重要组成部分,对提升全民科学素质有着重大的现实意义。科普基地在地方高校科学文化资源的基础上建立,不仅可以发挥社会服务功能,还可以引领科研创新,成为科学文化传播的重要场所。以三峡大学水科学与水工程求索溪科普基地为例,提出了多种具体的实践思路和科普形式,探讨地方高校特色科普基地的构建,旨在与其他高校学习交流、共同进步。