Results 41 to 50 of about 365,252 (144)
废水中添加磷对凤眼莲生长有速效作用,添加氧化塘底泥不抑制凤眼莲的生长,而能促进其生长。当废水中酚含量在250mg/L以上,pH < 3或pH > 10,电导率(20 ℃)4100μ/cm以上均导致凤眼莲急性中毒死亡。凤眼莲在废水中适宜生长范围是酚含量55mg/L以下,PH5-8,电导率1700μ/cm以下。一般而言,pH越高<如pH9>废水的毒性越大。废水中的有毒组分使pH和盐分的素性影响有所增加,但未明显增加酚的毒性影响 ...
吴振斌
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以再造烟叶(造纸法)生产废水为研究对象,对生产中两种主要工艺废水及生产综合废水进行了多项水质分析。研究结果表明,生产线中提取浓缩段与抄造成型段排放的工艺废水具有不同的水质特性,而生产综合废水则表现为一种弱酸性、中高浓度有机废水特性,可生化性较好。根据废水的上述特性,设计了一种“混凝—生化—脱色”的三级废水处理工艺并应用于2000t/a再造烟叶生产试验基地的废水处理中,工程实施运行后效果良好,吨水处理成本低,治理后的废水排放可达到国家《污水综合排放标准》GB8978—1996一级标准 ...
邱晔, 胡群, 陈辉敏, 彭金辉
doaj +2 more sources
ABSTRACT The covalent bonds at heterojunction interfaces enable more efficient charge carrier separation than traditional weakly coupled heterojunctions, with enhanced photocatalytic performance for organic wastewater purification. The interfacial covalent bonds drive energy band reorganization, rendering the conventional independent band edge ...
Jing‐Yu Ren +5 more
wiley +1 more source
天然气净化厂废水水质、水量波动大且含有大量难降解物质,难以稳定达标。采用水解酸化—好氧工艺处理天然气净化厂废水,出水可以稳定达到《污水综合排放标准》(GB8978—1996)的一级标准,可回用于循环冷却、绿化、冲厕、道路冲洗等。介绍了生物处理工艺的主要设计参数、控制参数以及运行经验 ...
李国欣, 杨俊仕, 李旭东
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Achieving Transboundary Water Security Through Water Innovations: A Framework and Cases
ABSTRACT Alternative sources of freshwater, provided by various innovations, have long been available to countries facing acute water stress. We hypothesize that avoiding and/or resolving conflict with neighbors—caused by the uncertainty of continued access to shared surface water and groundwater sources—is another driver of innovation adoption ...
David Lewis Feldman
wiley +1 more source
本发明公开了一种有机废水处理生物模块系统及其调控,属于废水生物处理领域。针对长期困扰我国污水处理的投资大、运行费用高的问题,本发明提出了一种能有效处理有机废水的系统,可根据废水水质选择生物模块组成废水处理生物模块系统,本系统可以对生物处理过程进行有效调控。 本发明具有适应性广、占地省、投资省、运行费低、剩余污泥少、耐冲击负荷、操作方便及运行稳定的优点 ...
李旭东
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选择四种高浓度难降解有机废水,在2L高压间歇反应釜中,研究了湿式氧化效果与技术可行性。结果表明:从氧化的容易程度来看,乳化液废水>丙硫咪唑废水>甲胺磷废水>分散蓝废水;各废水湿式氧化后可生化性得到显著改善;Cu2+有不同程度的催化作用;甲胺磷废水和丙硫咪唑废水对不锈钢反应釜腐蚀严重,乳化液废水最适宜湿式氧化。反应温度显著影响废水湿式氧化效果,温度越高氧化率越高。
唐文伟 +3 more
doaj +2 more sources
ABSTRACT Deep eutectic solvents (DESs) have displayed a significant potential in green recycling of spent lithium‐ion batteries (LIBs) cathode materials. In this study, we proposed a computational screening strategy based on the binding energy and hydrogen bonding performance via density functional theory and molecular dynamic calculation, achieving a ...
Yang Chen +7 more
wiley +1 more source
采用商品纳滤膜NF90浓缩回收高含磷废水,考察了预处理、pH、跨膜压力和浓缩倍数对纳滤浓缩回收含磷废水效果的影响。结果表明,利用氢氧化钠调节废水至pH=5时,固体去除率为64.2%,电导率降低60.3%。纳滤膜除磷技术的优化工艺条件为:料液pH=5,操作压力3 MPa,此条件下纳滤膜可长时间保持较高的通量。料液浓缩5倍时,TP的截留率为91.7%,脱盐率为90.7%。
王强 +5 more
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ABSTRACT The electrocatalytic reduction of nitrate (NO3ER) has emerged as a promising strategy for mitigating NO3− ${{\text{NO}}_{3}}^{-}$ pollution in wastewater while concurrently producing value‐added ammonia; however, its process is significantly hindered by the lack of highly efficient and low‐cost electrocatalysts. Herein, we proposed several non‐
Xue‐Shi Song +5 more
wiley +1 more source

