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光合细菌强化高浓度酵母废水厌氧生物处理效果研究 预览
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作者 李友明 薛宇慧 +2 位作者 葛广德 胡永玫 侯轶 《农业工程学报》 EI CAS CSCD 北大核心 2019年第9期214-220,共7页
高浓酵母废水的厌氧生物处理效率对废水处理系统的运行成本和经济可行性具有至关重要的作用。该文采用光合细菌强化厌氧污泥的方法处理酵母废水,考察了废水在厌氧处理前后的化学需氧量、色度变化以及光合细菌加入前后微生物的OTU分布、... 高浓酵母废水的厌氧生物处理效率对废水处理系统的运行成本和经济可行性具有至关重要的作用。该文采用光合细菌强化厌氧污泥的方法处理酵母废水,考察了废水在厌氧处理前后的化学需氧量、色度变化以及光合细菌加入前后微生物的OTU分布、厌氧污泥细菌的物种门类、污泥古菌聚类结果序列数量的变化。结果表明:光合细菌加入后,单段厌氧反应器处理酵母废水化学需氧量和色度去除率分别由原来的58.20%、47.50%显著提升至 75.12%和62.04%,光合细菌强化厌氧生物处理过程效果明显。微生物多样性分析发现在厌氧污泥驯化和添加光合细菌强化过程中,优势菌种不断累积,特异性增强,物种门类数目减少。光合细菌与其他异养细菌存在共生关系,加入光合细菌后污泥中产甲烷优势群落微生物明显增多,从而提高厌氧系统的处理效果。研究结果为高浓工业有机废水的有效处理提供了参考。 展开更多
关键词 废水 废水处理 光合细菌 厌氧处理工艺 微生物多样性
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醋酯废水除磷生产试验研究 预览
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作者 钱斐斐 曹红 +5 位作者 翟天兵 李晓东 司有银 严建 费晓东 朱丛静 《环境与发展》 2019年第1期94-96,共3页
本文在认真分析废水生化处理过程的基础上,结合开发低碱性除磷剂,研究开发醋酯废水化学法高效除磷工艺。结合减少调节用碱和醋酸等有机物在曝气过程中分解带来pH值上升等特点,化学法高效除磷工艺侧重于在混合废水经充分曝气处理后投放... 本文在认真分析废水生化处理过程的基础上,结合开发低碱性除磷剂,研究开发醋酯废水化学法高效除磷工艺。结合减少调节用碱和醋酸等有机物在曝气过程中分解带来pH值上升等特点,化学法高效除磷工艺侧重于在混合废水经充分曝气处理后投放低碱性除磷剂,在废水pH值8-9下生成沉淀,加酰胺类絮凝剂絮凝成污泥。生产试验表明,高效除磷工艺适合处理醋酯废水,在正常生产工况下,少加碱甚至不加碱,使用1.5‰左右的低碱性除磷剂,总磷去除率不低于82%,能够使废水总磷由40mg/L左右降至8mg/L左右;从试验情况看,增加除磷剂用量至2.5‰以上时,总磷去除率能够达到90%以上,能够使废水总磷降得更低,但除磷成本明显上升。开展化学法高效除磷工艺试验后,出水COD由试验前平均107.5mg/L下降至52.5mg/L,出水SS由均值89.3mg/L下降50.6mg/L,出水池水由淡褐色转为淡绿色。由此可见,化学法高效除磷工艺的运用将全面提高醋酯废水处理技术。 展开更多
关键词 醋酯 废水 低碱性除磷剂 化学法高效除磷工艺
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折点氯化法除钨冶炼厂氨氮废水研究 预览
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作者 陈星宇 马鑫铭 +4 位作者 史明 唐忠阳 刘旭恒 黄少波 赵中伟 《中国钨业》 CAS 2019年第1期45-49,69共6页
钨冶炼过程中产生大量氨氮废水,直接排放对环境造成破坏。研究采用折点氯化法处理钨冶炼厂排放的氨氮废水,研究了反应时间、初始氨氮浓度、p H值、温度对于模拟废水的氨氮脱除效果的影响,以及折点氯化法工业化应用的效果。模拟氨氮废水... 钨冶炼过程中产生大量氨氮废水,直接排放对环境造成破坏。研究采用折点氯化法处理钨冶炼厂排放的氨氮废水,研究了反应时间、初始氨氮浓度、p H值、温度对于模拟废水的氨氮脱除效果的影响,以及折点氯化法工业化应用的效果。模拟氨氮废水试验结果表明,当pH值为11时,试验效果最好:在45 min后,反应到达折点,氨氮浓度降至5.3 mg·L^-1,氯气利用率在95%左右。而温度和初始浓度两个因素对氨氮脱除无明显影响。折点氯化法工业试验结果表明:不同浓度(801 800 mg·L^-1)的钨冶炼厂废水经过折点氯化法处理后,氨氮均能够降低到15 mg·L^-1以下,且到达折点时Cl2与NH3-N的质量比为7.8。 展开更多
关键词 折点氯化法 氨氮 废水 氯气利用率
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Hydrological and economic feasibility of mitigating a stressed coastal aquifer using managed aquifer recharge: a case study of Jamma aquifer, Oman
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作者 Mustafa EL-RAWY Ali AL-MAKTOUMI +2 位作者 Slim ZEKRI Osman ABDALLA Rashid AL-ABRI 《干旱区科学:英文版》 SCIE CSCD 2019年第1期148-159,共12页
This study explored the hydrological and economic feasibility of managed aquifer recharge(MAR) using tertiary treated wastewater(TWW) to mitigate salinity in the coastal aquifer of Jamma, Oman. A steady-state groundwa... This study explored the hydrological and economic feasibility of managed aquifer recharge(MAR) using tertiary treated wastewater(TWW) to mitigate salinity in the coastal aquifer of Jamma, Oman. A steady-state groundwater flow and transport model, using MODFLOW software, was developed and calibrated. Different managerial scenarios were simulated and the results reveal that the Jamma aquifer will be further deteriorated in the next 20 a if it remains unmanaged. The groundwater table will decline further by more than 3 m on average;and the iso-concentration salinity line of 1500 mg/L will advance 2.7 km inland, which will severely affect the farming activities in the area. However, MAR using TWW when integrated with the management of groundwater abstraction(e.g., using modern irrigation systems to reduce the abstraction rate) becomes hydrologically feasible to augment the aquifer storage and control seawater intrusion, and hence improves the farming activities. The results indicate that:(1) injecting TWW in the vicinity of irrigation wells(Scenario A2);(2) investing in smart water meters and online control of pumping from the wells to reduce the abstraction rate by 25%(Scenario B);and(3) a combination of both(Scenario B2) are feasible scenarios with positive net present values. Recharge in upstream areas is found not economically feasible because of the very high investment cost of the installation of pipes to transport the TWW over a distance of 12.5 km. Because of securing funds are challenging, Scenario B would be the best option and the second-best option is Scenario A2. Scenario B2 has the lowest net benefit investment ratio and is very attractive because it entails integrated demand and supply management of groundwater. It is required to reduce pumping and to invest in injecting TWW to improve groundwater quality in the vicinity of irrigation wells and to form a hydrological barrier to control seawater intrusion in the long run. 展开更多
关键词 managed AQUIFER RECHARGE treated WASTEWATER SALINITY line COASTAL AQUIFER Oman
Use of polymeric sub-micron ion-exchange resins for removal of lead,copper,zinc,and nickel from natural waters
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作者 Audrey Murray Banu Ormeci 《环境科学学报:英文版》 SCIE EI CAS CSCD 2019年第1期247-254,共8页
This research investigated the removal capacity of polymeric sub-micron ion-exchange resins (SMR)for removal of lead,copper,zinc,and nickel from natural waters in competition with natural organic matter (NOM).Polymeri... This research investigated the removal capacity of polymeric sub-micron ion-exchange resins (SMR)for removal of lead,copper,zinc,and nickel from natural waters in competition with natural organic matter (NOM).Polymeric SMR particles were created and tested to ensure that they were adequately dispersed in the solution.They removed little NOM (10% or less)from river water and wastewater,indicating that competition from NOM was not a major concern.SMR were able to remove 82%±0.2% of lead,46%±0.6% of copper,55%±20% of zinc,and 17%±2% of nickel from river water spiked with 500μg/L of each.Similarly, in wastewater,they were able to remove 86%±0.1% of lead,38%±0.8% of copper,28%±1% of zinc,and 11%±1% of nickel. 展开更多
关键词 Water WASTEWATER Heavy metals Ion exchange POLYMERIC SUBMICRON resin Natural organic MATTER (NOM)
陶瓷负载TiO2复合材料的制备及光催化降解废水中苯酚的研究
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作者 胡秀虹 张廷辉 +2 位作者 王翔 蔡凌云 李荡 《化工新型材料》 CAS CSCD 北大核心 2019年第5期190-192,197共4页
以钛酸丁酯为原料,制备出TiO2光催化材料。以苯酚废水为模拟目标降解物,考察了苯酚初始质量浓度、初始pH和不同光照强度等因素对废水中苯酚降解率的影响。结果表明:陶瓷负载TiO2制得的光催化剂在300W汞灯照射下,当苯酚初始质量浓度为50m... 以钛酸丁酯为原料,制备出TiO2光催化材料。以苯酚废水为模拟目标降解物,考察了苯酚初始质量浓度、初始pH和不同光照强度等因素对废水中苯酚降解率的影响。结果表明:陶瓷负载TiO2制得的光催化剂在300W汞灯照射下,当苯酚初始质量浓度为50mg/L,初始pH=7,光照距离为11cm时,对苯酚的降解率较高,pH=7时有利于反应的进行,处理效果较好。反应机理为TiO2受光照射后,产生光生电子-空穴对,使苯酚得到还原。 展开更多
关键词 陶瓷负载 TIO2 光催化 废水
限氧废水处理系统的再启动与ANAMMOX功能恢复 预览
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作者 徐翩翩 孟佳 +1 位作者 汪聪 李建政 《哈尔滨工业大学学报》 EI CAS CSCD 北大核心 2019年第2期32-38,共7页
为解决低碳氮比有机废水生物脱氮的难题,经济高效的厌氧氨氧化(ANAMMOX)技术得到广泛研究,但ANAMMOX菌群对环境要求苛刻且富集困难,系统启动缓慢,限制了其工程应用.前期研究中,构建了用于处理高氨氮低碳氮比养猪废水的升流式限氧生物膜... 为解决低碳氮比有机废水生物脱氮的难题,经济高效的厌氧氨氧化(ANAMMOX)技术得到广泛研究,但ANAMMOX菌群对环境要求苛刻且富集困难,系统启动缓慢,限制了其工程应用.前期研究中,构建了用于处理高氨氮低碳氮比养猪废水的升流式限氧生物膜反应器(UOLBR),经180d的启动运行实现了以ANAMMOX为主导的脱氮功能.将UOLBR闲置2个月,以COD与TN比为0.6~1.0的干清粪养猪废水为进水,在水力停留时间10h、25℃和出水回流比25∶1的条件下再次启动,考察其处理效果和ANAMMOX功能的恢复情况.结果表明,经过溶解氧分别为2.5~3.0和0.2~0.5mg/L两个阶段,共计53d的连续运行,UOLBR的处理效能得以恢复并达到稳定状态,对COD、NH+4-N、TN的平均去除率分别为64.0%,96.5%和91.7%,出水质量浓度分别仅为61,7.0和16.4mg/L左右.微生物群落结构和物料平衡分析表明,UOLBR系统恢复了以ANAMMOX为主要脱氮途径的特征.该研究可为低碳氮比有机废水ANAMMOX处理系统的启动和运行管理提供指导. 展开更多
关键词 限氧 废水 低COD与TN比 生物脱氮 生物膜
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Recyclable adsorbent of BiFeO3/Carbon for purifying industrial dye wastewater via photocatalytic reproducible 预览
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作者 Shuang Jiao Yiming Zhao +2 位作者 Chensha Li Binsong Wang Yang Qu 《绿色能源与环境:英文版》 CSCD 2019年第1期66-74,共9页
It is essential to prepare highly-efficiency reproducible adsorbent for purifying industrial dye wastewater. In this work, biscuit with a layered porous structure as a template is applied to prepare a photocatalytic r... It is essential to prepare highly-efficiency reproducible adsorbent for purifying industrial dye wastewater. In this work, biscuit with a layered porous structure as a template is applied to prepare a photocatalytic recyclable adsorbent of BiFeO3/Carbon nanocomposites for purifying simulative industrial dye wastewater. It is found that the structure of the prepared BiFeO3/Carbon nanocomposite is related to the natural structure of the biscuit, annealing temperatures and immersing times, demonstrated by XRD, TEM, UV-Vis and adsorptive activities. Kinetics data shows that the adsorption rate of the adsorbent to the dye is rapid and fitted well with the pseudo-second-order model, that more than 80% of dyes can be removed in the beginning 30 min. The adsorption isotherm can be perfectly described by the Langmuir model as well. It can be seen from the adsorption data that the adsorption performance can reach over 90% at pH ? 2–12, which can imply its universal utilization. The prepared BiFeO3/Carbon nanocomposites have also displayed excellent capacities(over 90% within 30 min) for adsorption of seven different dyes and their mixed one. According to the five times photocatalytic reproducible experiments, it is proved that BiFeO3/Carbon nanocomposites show the excellent stability and reproduction for purifying simulative industrial dyes, even the sample have been placed for one year. These research results indicate that the adsorbent BiFeO3/Carbon can be a suitable material used in treating industrial dye wastewater potentially. 展开更多
关键词 Reproducible ADSORBENT BiFeO3/Carbon nanocomposites Photocatalysis PURIFYING INDUSTRIAL dye wastewater Pseudo-second-order model
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聚丙烯酰胺废水技术处理研究进展 预览
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作者 蔡传根 陈明功 +3 位作者 荣俊峰 王旭浩 刘静茹 汪智伟 《广东化工》 CAS 2019年第2期262-263,共2页
简述了处理聚丙烯酰胺废水的常见方法,像是絮凝法、机械降解法、生物净化法、Fenton法、光催化氧化法、低温等离子法及复合型处理技术,并对这些处理技术的原理做了阐述和比较其优缺点,最后对聚丙烯酰胺废水处理发展方向进行了展望。
关键词 聚丙烯酰胺 废水 复合型处理技术 研究进展
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浅谈甘蔗制糖废水的污染控制 预览
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作者 王春华 《广西糖业》 2019年第1期7-9,共3页
甘蔗制糖是重要的经济产业之一,制糖工业也是耗水和污染较集中的产业。甘蔗制糖废水产生量大,水量水质排放不稳定,有机污染成分较多,废水处理具有一定的难度。制糖废水的综合治理一直都是工业废水处理研究的重点,目前我国用水短缺,严峻... 甘蔗制糖是重要的经济产业之一,制糖工业也是耗水和污染较集中的产业。甘蔗制糖废水产生量大,水量水质排放不稳定,有机污染成分较多,废水处理具有一定的难度。制糖废水的综合治理一直都是工业废水处理研究的重点,目前我国用水短缺,严峻的形势要求制糖废水污染物排放总量达到控制要求和排放标准。因此利用污水治理系统使生产中工艺用水及非工艺用水得到分类处理和循环利用具有重要意义。文章首先对甘蔗制糖的主要生产工艺与甘蔗制糖废水产生进行了分析,其次介绍了甘蔗制糖企业废水浓度,并展开了对制糖废水主要生化处理工艺的研究,最后阐述了甘蔗制糖废水回收利用。 展开更多
关键词 甘蔗 制糖 废水 污染控制
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郝现联合站余热技术的综合应用 预览
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作者 薛守梅 辛雪凝 赵建豪 《石油石化节能》 2019年第3期18-20,I0003共4页
能源是经济发展和社会进步的重要基础,随着能源消耗的不断攀升,温室效应对社会和环境的影响越来越突出,节能减排已经成为当今人类的共识。老油田进入开发后期,含水越来越高,吨油成本及能耗不断攀升,油田经营开发压力越来越大,郝现联合... 能源是经济发展和社会进步的重要基础,随着能源消耗的不断攀升,温室效应对社会和环境的影响越来越突出,节能减排已经成为当今人类的共识。老油田进入开发后期,含水越来越高,吨油成本及能耗不断攀升,油田经营开发压力越来越大,郝现联合站采用热泵+换热器工艺,综合利用高温污水余热加热稀油,起到了节约天然气用量,降低联合站经营成本的良好效果。 展开更多
关键词 联合站 热泵 换热器 污水 余热
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用混凝-微电解预处理工艺处理豆制品废水 预览
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作者 赵晓旭 张忠懿 +5 位作者 牛青 鄢继翱 郭智垒 余艳槟 冯如萍 宋雪英 《沈阳大学学报:自然科学版》 CAS 2019年第2期95-100,共6页
采用混凝-微电解法作为预处理工艺,与生物处理工艺联用处理豆制品废水.实验结果表明,本实验处理豆制品废水的最佳初始pH值为3.5~4.0,混凝剂最佳选择为聚合氯化铝(PAC),其与助凝剂聚丙烯酰胺(PAM)的投放质量浓度分别为0.5g·L^-1和10... 采用混凝-微电解法作为预处理工艺,与生物处理工艺联用处理豆制品废水.实验结果表明,本实验处理豆制品废水的最佳初始pH值为3.5~4.0,混凝剂最佳选择为聚合氯化铝(PAC),其与助凝剂聚丙烯酰胺(PAM)的投放质量浓度分别为0.5g·L^-1和10mg·L^-1,可去除废水中27.5%的COD,微电解处理效果最佳的反应时间为6h,有效去除废水中53.6%的COD. 展开更多
关键词 豆制品 废水 预处理 混凝 微电解
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低C/N摩尔比好氧反硝化菌的筛选及脱氮特性
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作者 胡杰 颜家保 +4 位作者 霍晓琼 吴玲 俞丹青 陈美玲 李超 《现代化工》 CAS CSCD 北大核心 2019年第5期128-132,共5页
从石化废水处理厂活性污泥中分离得到1株低C/N摩尔比的好氧反硝化菌株AD-7,通过形态学观察、生理生化试验及16S rD NA测序,确定其为假单胞菌属(Pseudomonas sp.)。通过单因素实验确定菌株适宜的好氧反硝化培养条件为:丁二酸钠为碳源、... 从石化废水处理厂活性污泥中分离得到1株低C/N摩尔比的好氧反硝化菌株AD-7,通过形态学观察、生理生化试验及16S rD NA测序,确定其为假单胞菌属(Pseudomonas sp.)。通过单因素实验确定菌株适宜的好氧反硝化培养条件为:丁二酸钠为碳源、培养温度为30~35℃、初始pH 6. 0~7. 0、摇床转速为150~200 r/min。在适宜的好氧反硝化培养条件下,研究了菌株生长情况与反硝化脱氮特性。结果表明,菌株生长与反硝化脱氮基本同步,并且在菌株培养12 h时,硝酸盐氮和总氮的去除率分别高达90. 47%和86. 06%,未出现亚硝酸盐氮的明显积累。因此,菌株AD-7能够通过完全反硝化实现总氮的有效脱除,在低C/N摩尔比废水脱氮方面具有潜在应用价值。 展开更多
关键词 废水 好氧反硝化 低C/N摩尔比 脱氮 假单胞菌
Photocatalysts for degradation of dyes in industrial effluents:Opportunities and challenges
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作者 Hassan Anwer Asad Mahmood +3 位作者 Jechan Lee Ki-Hyun Kim Jae-Woo Park Alex C.K.Yip 《纳米研究:英文版》 SCIE EI CAS CSCD 2019年第5期955-972,共18页
Discharging dye contaminants into water is a major concern around the world.Among a variety of methods to treat dye-contaminated water,photocatalytic degradation has gained attention as a tool for treating the colored... Discharging dye contaminants into water is a major concern around the world.Among a variety of methods to treat dye-contaminated water,photocatalytic degradation has gained attention as a tool for treating the colored water.Herein,we review the recent advancements in photocatalysis for dye degradation in industrial effluents by categorizing photocatalyst materials into three generations.First generation photocatalysts are composed of single-component materials (e.g.,TiO2,ZnO,and CdS),while second generation photocatalysts are composed of multiple components in a suspension (e.g.,WO3/NiWO4,BiOl/ZnTiOa,and C3N4/Ag3VO4).Photocatalysts immobilized on solid substrates are regarded as third generation materials (e.g.,FTO/WO3-ZnO,Steel/TiO2-WO3,and Glass/P-TiO2).Photocatalytic degradation mechanisms,factors affecting the dye degradation,and the lesser-debated uncertainties related to the photocatalysis are also discussed to offer better insights into environmental applications.Furthermore,quantum yields of different photocatalysts are calculated,and a performance evaluation method is proposed to compare photocatalyst systems for dye degradation.Finally,we discuss the present limitations of photocatalytic dye degradation for field applications and the future of the technology. 展开更多
关键词 PHOTOCATALYST DYE WASTEWATER DEGRADATION mechanism performance evaluation
Advances in Control Technologies for Wastewater Treatment Processes:Status, Challenges, and Perspectives 预览
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作者 Abdelhamid Iratni Ni-Bin Chang 《自动化学报:英文版》 CSCD 2019年第2期337-363,共27页
This paper presents a thorough review of control technologies that have been applied to wastewater treatment processes in the environmental engineering regime in the past four decades. It aims to provide a comprehensi... This paper presents a thorough review of control technologies that have been applied to wastewater treatment processes in the environmental engineering regime in the past four decades. It aims to provide a comprehensive technological review for both water engineering professionals and control specialists, giving rise to a suite of up-to-date pathways to impact this field in light of the classified technology hubs. The assessment was conducted with respect to linear control, linearizing control,nonlinear control, and artificial intelligence-based control. The application domain of each technology hub was summarized into a set of comparative tables for a holistic assessment. Challenges and perspectives were offered to these field engineers to help orient their future endeavor. 展开更多
关键词 Control TECHNOLOGIES system engineering WASTEWATER treatment
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Application of activated carbon-decorated polyacrylonitrile nanofibers as an adsorbent in dispersive solid-phase extraction of fluoroquinolones from wastewater 预览
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作者 K. Mogolodi Dimpe Philiswa N. Nomngongo 《药物分析学报:英文版》 CAS CSCD 2019年第2期117-126,共10页
A cheap and simple sample preparation method,consisting of a dispersive solid-phase method and an adsorbent,activated carbon decorated PAN nanofibers,was employed and used for the extraction of antibiotics (ciprofloxa... A cheap and simple sample preparation method,consisting of a dispersive solid-phase method and an adsorbent,activated carbon decorated PAN nanofibers,was employed and used for the extraction of antibiotics (ciprofloxacin,danofloxacin,and enrofloxacin) in wastewater.Electrospun PAN nanofibers that were decorated with activated carbon produced from waste tires were used as the solid phase and the antibiotics analyzed by using high-performance liquid chromatography.Parameters such as pH,mass of adsorbent (MA),extraction volume (EV),and extraction time (ET) were optimized owing to their potential effect on the extraction of antibiotics from water.The recovery of all antibiotics was satisfactory,in the range of 90%–99%.The limits of detection and quantification were 0.05,0.11,0.20,and 0.53,1.21,2.17 mg/L,respectively.The precision was determined from the repeatability and reproducibility and expressed as the intra-day (n=20) and inter-day (n=5) precision.The intra-day and inter-day precision was reported in terms of the percentage relative standard deviation,which was 3% and 4%,respectively.The adsorption capacity of the activated carbon-decorated PAN nanofibers was satisfactory,and the reusability of the adsorbent was impressive when reused ten times.The accuracy of the dispersive solid phase extraction (DSPE) was validated by spike recovery tests;the results proved the reliability and efficiency of adsorbing antibiotics from wastewater.Finally,the proposed method was applied to wastewater samples collected from a wastewater treatment plant,which included influent,secondary,and effluent wastewater. 展开更多
关键词 WASTEWATER NANOFIBERS Activated carbon ANTIBIOTICS POLYACRYLONITRILE
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二级化学沉淀-MBR工艺处理钎焊含氟废水 预览
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作者 徐 《节能与环保》 2019年第5期52-53,共2页
采用二级化学沉淀除氟-MBR工艺处理广州某汽车空调生产厂家在钎焊喷漆过程产生的废水。运行结果表明:当钎焊废水原水F、CODCr、氨氮和SS浓度分别为220、120、40、200mg/L时,经处理后的水质达到《污水综合排放标准》(GB8978-1996)一级标... 采用二级化学沉淀除氟-MBR工艺处理广州某汽车空调生产厂家在钎焊喷漆过程产生的废水。运行结果表明:当钎焊废水原水F、CODCr、氨氮和SS浓度分别为220、120、40、200mg/L时,经处理后的水质达到《污水综合排放标准》(GB8978-1996)一级标准和《城镇污水处理厂污染物排放标准》(GB18918-2002)一级A标准:F、CODCr、氨氮和SS浓度分别不大于10、50、5、10mg/L。 展开更多
关键词 除氟 MBR 钎焊 废水
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Electrochemical reduction of CO2 and degradation of KHP on boron-doped diamond electrodes in a simultaneous and enhanced process
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作者 Daibing Luo Shanhu Liu +1 位作者 Kazuya Nakata Akira Fujishima 《中国化学快报:英文版》 SCIE CAS CSCD 2019年第2期509-512,共4页
In this research a novel electrochemical system using dual boron-doped diamond (BDD) electrodes as the anode and cathode, for the first time, has been developed for CO2 conversion and wastewater treatment in a synerge... In this research a novel electrochemical system using dual boron-doped diamond (BDD) electrodes as the anode and cathode, for the first time, has been developed for CO2 conversion and wastewater treatment in a synergetic and simultaneous process. On the BDD cathode CO2 is converted into formaldehyde while in the anodic side organic wastes are decomposed on the BDD anode. Interestingly, when potassium hydrogen phthalate (KHP) was used as the organic model to be degraded in the anodic side, a higher efficiency of formaldehyde generation from CO2 was observed on the BDD cathode. The enhanced effect of formaldehyde formation in the presence of KHP oxidation suggests that this novel electrochemical system can combine conversion of CO2 to the form of high-value chemicals and wastewater purification in a simultaneous and harmonious process. 展开更多
关键词 CO2 Wlectrochemical reduction BORON-DOPED DIAMOND WASTEWATER treatment FORMALDEHYDE
电子加工类企业废水中石油类的分析研究 预览
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作者 赵倩 穆琳 +1 位作者 高晓庆 杨峰 《环境与发展》 2019年第2期123-123,125共2页
本文通过对西安市电子加工类企业的工业废水进行检测分析,采用红外分光光度法测定水质中的石油类物质。通过对加工车间采集的水样进行检测,结果表明,本实验分析方法在0.00~100.00mg/L范围内标准曲线线性良好,相关系数r为0.9999。检测水... 本文通过对西安市电子加工类企业的工业废水进行检测分析,采用红外分光光度法测定水质中的石油类物质。通过对加工车间采集的水样进行检测,结果表明,本实验分析方法在0.00~100.00mg/L范围内标准曲线线性良好,相关系数r为0.9999。检测水样中的石油类浓度为0.91~2.53mg/L,测定结果的相对标准偏差为1.05%~5.35%,实验测定质控样样品浓度为44.5mg/L、44.6mg/L,相对标准偏差为0.31%、0.19%,全部在质控样允许浓度范围内,本次实验结果可靠,说明电子加工行业产生的废水中含有少量石油类物质。 展开更多
关键词 废水 石油类 红外分光光度法 四氯化碳
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现代煤化工污染治理技术分析与环境管理政策建议 预览
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作者 孙磊磊 刘志学 +1 位作者 吴琼慧 滕巍 《煤质技术》 2019年第3期1-6,19共7页
简述现代煤化工行业概况,分析了煤化工废水、废气及固体废弃物等污染物控制技术水平及其存在的主要问题,并对现代煤化工行业污染物排放强度、污染治理技术、环境管理政策、环境影响评价进行全面评估,建议以改善环境质量为目标,结合全过... 简述现代煤化工行业概况,分析了煤化工废水、废气及固体废弃物等污染物控制技术水平及其存在的主要问题,并对现代煤化工行业污染物排放强度、污染治理技术、环境管理政策、环境影响评价进行全面评估,建议以改善环境质量为目标,结合全过程、精细化环境管理要求合理规划布局,加快推动行业污染物排放标准、污染物防治可行技术指南、排污许可制等相关规范的制定,促进现代煤化工行业的绿色发展。 展开更多
关键词 煤化工 污染治理技术 环境管理政策 废水 废气 固体废弃物 污染物排放标准
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