期刊文献+
共找到660篇文章
< 1 2 33 >
每页显示 20 50 100
Kinetics model of aerobic phase in hybrid anoxic-oxic process
1
作者 孙慧丽 陈志强 +1 位作者 姜涛 吕炳南 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2010年第2期161-165,共5页
Kinetics models of COD degradation,biomass growth of the anoxic-oxic ( A/O) system as well as NH3-N degradation in aerobic phase were presented according to the mass balance theory,reaction-diffusion theory and Fick l... Kinetics models of COD degradation,biomass growth of the anoxic-oxic ( A/O) system as well as NH3-N degradation in aerobic phase were presented according to the mass balance theory,reaction-diffusion theory and Fick law. Then these models were testified by comparson with experimental results. It is demonstrated that the variation trends of theoretical and experimental values for COD degradation and biomass growth are similar. The deviation rate between theoretical and experimental values is always under 20% even it increases along with the fluctuation of influent organic loading. In terms of NH3-N degradation,nitrification can also be well simulated by the model as the substrates of influent are sufficient. It indicates that the model can accurately reflect the reaction in hybrid A/O process. Models presented herein provide a theoretical basis for the design, operation and control of hybrid A/O process. 展开更多
关键词 hybrid anoxic-oxic process aerobic phase anoxic phase kinetics model testify
下载PDF
Effects of adding chicken manure to cattle manure on aerobic compost process parameters at low temperature 被引量:1
2
作者 ZHAO Xiaofeng XU Fenghua HE Huixia WAN Shuming 《Journal of Northeast Agricultural University(English Edition)》 CAS 2007年第1期31-35,共5页
The research was aimed at studying the effect of adding certain proportion chicken manure to cattle manure on compost below 0℃ with aerobic compost method, which was suitable for northern cold climate. The results in... The research was aimed at studying the effect of adding certain proportion chicken manure to cattle manure on compost below 0℃ with aerobic compost method, which was suitable for northern cold climate. The results indicated that the mixed compost completed 3 days earlier than the single compost, the temperature of the mixed compost rose to 50.7℃ at the 1st day,and achieved its highest temperature 74.4℃ at the 3rd day. The temperature of the single compost rose to 40.0℃ at the 1st day,rose to 55.6℃ at the 3rd day,and achieved its highest temperature 70.1℃ at the 5th day. Adding chicken manure had no impact on the variety trend of the process parameters such as moisture content, pH and C/N ratio, hut increased the variety range of these parameters. 展开更多
关键词 aerobic compost process parameters mixed compost
下载PDF
A novel multistage anoxic/aerobic process with sludge regeneration zone (R-MAO) for advanced nitrogen removal from domestic sewage 被引量:1
3
作者 Lin Cao Rong Sun +5 位作者 Wenyi Dong Hongjie Wang Zhongyi Dai Xue Wang Jin Xie Hua Li 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2023年第2期758-768,共11页
To achieve advanced nitrogen removal from actual municipal sewage,a novel multistage anoxic/aerobic process with sludge regeneration zone(R-MAO)was developed.The reactor was used to treat actual domestic sewage and th... To achieve advanced nitrogen removal from actual municipal sewage,a novel multistage anoxic/aerobic process with sludge regeneration zone(R-MAO)was developed.The reactor was used to treat actual domestic sewage and the nitrogen removal capacity of the sludge regeneration zone(R zone)was investigated during the long-term operation.The best performance was obtained at the R zone’s Oxidation-Reduction Potential(ORP)of-50±30 mV and hydraulic residence times(HRT)of 1.2 hr.The average effluent COD,TN,NH_(4)^(+)-N and NO_(3)^(−)-N of the R-MAO process were 18.0±2.3,7.5±0.6,1.0±0.5 and 4.6±0.4 mg/L,respectively,with the corresponding removal efficiency of COD,TN and NH_(4)^(+)-N were 92.9%±1.0%,84.1%±1.5% and 97.5%±1.1%.Compared to the sole MAO system,the TN removal efficiency of the R-MAO increased by 10.1%.Besides,under the optimal conditions,the contribution of the R zone in the R-MAO that removal COD,TN,NH_(4)^(+)-N and NO_(3)^(−)-N were 0.36,0.15,0.032 and 0.82 g/day.High-throughput sequencing results showed that uncultured_bacterium_f_Burkholderiaceae(5.20%),OLB8(1.04%)and Ottowia(1.03%)played an important role in denitrification in the R zone.This study provided effective guidance for the design and operation of the R-MAO process in domestic sewage treatment. 展开更多
关键词 Advanced nitrogen removal Multistage anoxic/aerobic process Sludge regeneration zone(R zone) Microbial community
原文传递
Removal of nitrogen and phosphorus in a combined A^2/O-BAF system with a short aerobic SRT 被引量:15
4
作者 DING Yong-wei WANG Lin +1 位作者 WANG Bao-zhen WANG Zheng 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2006年第6期1082-1087,共6页
A bench-scale anaerobic/anoxic/aerobic process-biological aerated filter (A^2/O-BAF) combined system was carded out to treat wastewater with lower C/N and C/P ratios. The A^2/O process was operated in a short aerobi... A bench-scale anaerobic/anoxic/aerobic process-biological aerated filter (A^2/O-BAF) combined system was carded out to treat wastewater with lower C/N and C/P ratios. The A^2/O process was operated in a short aerobic sludge retention time (SRT) for organic pollutants and phosphorus removal, and denitrification. The subsequent BAF process was mainly used for nitrification. The BAF effluent was partially returned to anoxic zone of the A^2/O process to provide electron acceptors for denitrification and anoxic P uptake. This unique system formed an environment for reproducing the denitdfying phosphate-accumulating organisms (DPAOs). The ratio of DPAOs to phosphorus accumulating organisms (PAOs) could be maintained at 28% by optimizing the organic loads in the anaerobic zone and the nitrate loads into the anoxic zone in the A^2/O process. The aerobic phosphorus over-uptake and discharge of excess activated sludge was the main mechanism of phosphorus removal in the combined system. The aerobic SRT of the A^2/O process should meet the demands for the development of aerobic PAOs and the restraint on the nitrifiers growth, and the contact time in the aerobic zone of the A^2/O process should be longer than 30 min, which ensured efficient phosphorus removal in the combined system. The adequate BAF effluent return rates should be controlled with 1--4 mg/L nitrate nitrogen in the anoxic zone effluent of A^2/O process to achieve the optimal nitrogen and phosphorus removal efficiencies. 展开更多
关键词 nitrogen and phosphorus removal denitrifying phosphorus removal denitrifying phosphorus accumulating organisms (DPAOs) anaerobic/anoxic/aerobic process (A^2/O) biological aerated filter (BAF) aerobic sludge retention time (SRT)
下载PDF
Petro-chemical wastewater treatment by biological process 被引量:6
5
作者 Guan, Wei-Sheng Lei, Zi-Xue Zhu, Jun-Huang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2000年第2期95-99,共5页
In order to study the feasibility of treating petro chemical wastewater by the combination of anaerobic and aerobic biological process, a research of treating wastewater in UASB reactor and aeration basin has been co... In order to study the feasibility of treating petro chemical wastewater by the combination of anaerobic and aerobic biological process, a research of treating wastewater in UASB reactor and aeration basin has been conducted. The test results shows that under moderate temperature, with 5\^2 kgCOD/(m\+3·d) volumetric load of COD Cr in the UASB reactor and 24h of HRT, 85% removal rate of BOD 5 and 83% of COD \{Cr\} and 1\^34 m\+3/(m\+3·d) volumetric gas production rate can be obtained respectively. The aerobic bio degradability can be increased by 20%—30% after the petro chemical wastewater has been treated by anaerobic process. As Ns=0\^45 kgCOD/(kgMLSS·d), HRT=4h in the aeration tank, 94% removal rate of BOD 5, 93% of COD \{Cr\}, 98\^8% total removal rate of COD \{Cr\} and 99% removal rate of BOD 5 can be reached. 展开更多
关键词 anaerobic aerobic process petro chemical wastewater wastewater treatment CLC number: X703 Document code: A
下载PDF
Kinetics of aerobically activated sludge on terylene artificial silk printing and dyeing wastewater treatment 被引量:3
6
作者 官宝红 吴忠标 徐根良 《Journal of Zhejiang University Science》 EI CSCD 2004年第4期441-449,共9页
Aerobically activated sludge processing was carried out to treat terylene artificial silk printing and dyeing wastewater (TPD wastewater) in a lab-scale experiment, focusing on the kinetics of the COD removal. The kin... Aerobically activated sludge processing was carried out to treat terylene artificial silk printing and dyeing wastewater (TPD wastewater) in a lab-scale experiment, focusing on the kinetics of the COD removal. The kinetics pa-rameters determined from experiment were applied to evaluate the biological treatability of wastewater. Experiments showed that COD removal could be divided into two stages, in which the ratio BOD/COD (B/C) was the key factor for stage division. At the rapid-removal stage with B/C>0.1, COD removal could be described by a zero order reaction. At the mod-erate-removal stage with B/C<0.1, COD removal could be described by a first order reaction. Then Monod equation was introduced to indicate COD removal. The reaction rate constant (K) and half saturation constant (KS) were 0.0208-0.0642 L/(gMLSS)h and 0.44-0.59 (gCOD)/L respectively at 20 C-35 C. Activation energy (Ea) was 6.05104 J/mol. By comparison of kinetic parameters, the biological treatability of TPD wastewater was superior to that of traditional textile wastewater. But COD removal from TPD-wastewater was much more difficult than that from domestic and industrial wastewater, such as papermaking, beer, phenol wastewater, etc. The expected effluent quality strongly related to un-biodegradable COD and kinetics rather than total COD. The results provide useful basis for further scaling up and efficient operation of TPD wastewater treatment. 展开更多
关键词 process kinetics aerobically activated sludge COD (chemical oxygen demand) Biological treatability Prin- ting and dyeing wastewater
下载PDF
Characteristics of anoxic phosphors removal in sequence batch reactor 被引量:18
7
作者 WANG Ya-yi PAN Mian-li +2 位作者 YAN Min PENG Yong-zhen WANG Shu-ying 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第7期776-782,共7页
The characteristics of anaerobic phosphorus release and anoxic phosphorus uptake were investigated in sequencing batch reactors using denitrifying phosphorus removing bacteria (DPB) sludge. The lab-scale experiments... The characteristics of anaerobic phosphorus release and anoxic phosphorus uptake were investigated in sequencing batch reactors using denitrifying phosphorus removing bacteria (DPB) sludge. The lab-scale experiments were accomplished under conditions of various nitrite concentrations (5.5, 9.5, and 15 mg/L) and mixed liquor suspended solids (MLSS) (1844, 3231, and 6730 mg/L). The results obtained confirmed that nitrite, MLSS, and pH were key factors, which had a significant impact on anaerobic phosphorus release and anoxic phosphorus uptake in the biological phosphorous removal process. The nitrites were able to successfully act as electron acceptors for phosphorous uptake at a limited concentration between 5.5 and 9.5 mg/L. The denitrification and dephosphorous were inhibited when the nitrite concentration reached 15 mg/L. This observation indicated that the nitrite would not inhibit phosphorus uptake before it exceeded a threshold concentration. It was assumed that an increase of MLSS concentration from 1844 mg/L to 6730 mg/L led to the increase of denitrification and anoxic P-uptake rate. On the contrary, the average P-uptake/N denitrifying reduced from 2.10 to 1.57 mg PO4^3--P/mg NO3^--N. Therefore, it could be concluded that increasing MLSS of the DEPHANOX system might shorten the reaction time of phosphorus release and anoxic phosphorus uptake. However, excessive MLSS might reduce the specific denitrifying rate. Meanwhile, a rapid pH increase occurred at the beginning of the anoxic conditions as a result of denitrification and anoxic phosphate uptake. Anaerobic P release rate increased with an increase in pH. Moreover, when pH exceeded a relatively high value of 8.0, the dissolved P concentration decreased in the liquid phase, because of chemical precipitation. This observation suggested that pH should be strictly controlled below 8.0 to avoid chemical precipitation if the biological denitrifying phosphorus removal capability is to be studied accurately. 展开更多
关键词 biological phosphorus removal NITRITE MLSS pH denitrifying phosphorus removing bacteria (DPB) anaerobic-anoxic processes
下载PDF
Effects of loading rate and hydraulic residence time on anoxic sulfide biooxidation 被引量:1
8
作者 MAHMOOD Qaisar ISLAM Ejazul 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2007年第7期1149-1156,共8页
The optimal operation conditions in an anoxic sulfide oxidizing (ASO) bioreactor were investigated. The maximal removal rates for sulfide and nitrate were found to be 4.18 kg/(m3·d) and 1.73 kg/(m3·d), respe... The optimal operation conditions in an anoxic sulfide oxidizing (ASO) bioreactor were investigated. The maximal removal rates for sulfide and nitrate were found to be 4.18 kg/(m3·d) and 1.73 kg/(m3·d), respectively. The volumetrical volumetric loading rates (LRs) observed through decreasing hydraulic retention time (HRT) at fixed substrate concentration are higher than those by increasing substrate concentration at fixed HRT. The sulfide oxidation in ASO reactor was partially producing both sulfate and sulfur; but the amount of sulfate produced was approximately one third that of sulfur. The process was able to tolerate high sulfide concentration, as the sulfide removal percentage always remained near 99% when influent concentration was up to 580 mg/L. It tolerated relatively lower nitrate concentration because the removal percentage dropped to 85% when influent con- centration was increased above 110 mg/L. The process can tolerate shorter HRT but careful operation is needed. Nitrate conversion was more sensitive to HRT than sulfide conversion since the process performance deteriorated abruptly when HRT was decreased from 3.12 h to 2.88 h. In order to avoid nitrite accumulation in the reactor, the influent sulfide and nitrate concentrations should be kept at 280 mg/L and 67.5 mg/L respectively. Present biotechnology is useful for removing sulfides from sewers and crude oil. 展开更多
关键词 Anaerobic processes anoxic nitrate removal BIODESULFURIZATION BIOTRANSFORMATION Fluidized bed bioreactors Hydraulic residence time (HRT)
下载PDF
Effects of Nitrate Concentration in Main Anoxic Zone on Denitrifying Dephosphatation 被引量:1
9
作者 尹军 王晓玲 +2 位作者 祝贵兵 叶龙 吴相会 《Journal of Donghua University(English Edition)》 EI CAS 2009年第4期443-449,共7页
The effects of nitrate concentration in the main anoxic zone on denitrifying dephosphatation capability were conducted based on modified University of Cape Town (MUCT) process. Meanwhile the relation between optimal... The effects of nitrate concentration in the main anoxic zone on denitrifying dephosphatation capability were conducted based on modified University of Cape Town (MUCT) process. Meanwhile the relation between optimal nitrate concentration (Nopt) and influent C/N ratio was evaluated, in which the influont chemical oxygen demand (COD) concentration was stabilized at (2905:10)mg/L, the influent total phosphorus (TP) concentration was stabilized at (7.0±0. 5)mg/L. The results indicated that: (1) the nitrate concentration in the main anoxic zone had an effect on denitrifying dephosphatation capability, and the average percentages of anoxic phosphorus uptake in total phosphorus uptake (ηa) increased with nitrate cancentration increasing, i.e., increasing from 62.1% at2.0 mg/L to63.7%, 65.6%, 68.1%, and 72.3% at 2.2, 2.4, 2.6 and 2.8mg/L, respectively; (2) the Nopt as function of influent C/N ratio could be calculated by the equation: y = 0.67x^2-7.79x + 22. 21; the maximum percentages of anoxic phosphorus uptake in total phosphorus uptake (ηa,max) as function of the Nopt could be calculated by the equation: y=0.77-0.33e^-(x/1.52). The Nopt was the important control parameter that must be optimized for operation of conveational biological nutrieat removal activated sludge (BNRAS) system. 展开更多
关键词 MUCT process denitri fying de phosphatation nitrate concentration anoxic phosphorus uptake
下载PDF
Effect of short-term atrazine addition on the performance of an anaerobic/anoxic/oxic process
10
作者 Changyong WU Yongzhen PENG +1 位作者 Xiaoling LI Zhiqiang CHEN 《Frontiers of Environmental Science & Engineering》 SCIE EI CSCD 2010年第2期150-156,共7页
In this study,an anaerobic/anoxic/oxic(A^(2)O)wastewater treatment process was implemented to treat domestic wastewater with short-term atrazine addition.The results provided an evaluation on the effects of an acciden... In this study,an anaerobic/anoxic/oxic(A^(2)O)wastewater treatment process was implemented to treat domestic wastewater with short-term atrazine addition.The results provided an evaluation on the effects of an accidental pollution on the operation of a wastewater treatment plant(WWTP)in relation to Chemical Oxygen Demand(COD)and biological nutrient removal.Domestic wastewater with atrazine addition in 3 continuous days was treated when steady biological nutrient removal was achieved in the A^(2)O process.The concentrations of atrazine were 15,10,and 5 mg%L–1 on days 1,2 and 3,respectively.The results showed that atrazine addition did not affect the removal of COD.The specific NH4þoxidation rate and NO3–reduction rate decreased slightly due to the short-term atrazine addition.However,it did not affect the nitrogen removal due to the high nitrification and denitrification capacity of the system.Total nitrogen(TN)removal was steady,and more than 70%was removed during the period studied.The phosphorus removal rate was not affected by the short-term addition of atrazine under the applied experimental conditions.However,more poly-hydroxy-alkanoate(PHA)was generated and utilized during atrazine addition.The results of the oxygen uptake rate(OUR)showed that the respiration of nitrifiers decreased significantly,while the activity of carbon utilizers had no obvious change with the atrazine addition.Atrazine was not removed with the A^(2)O process,even via absorption by the activated sludge in the process of the short-term addition of atrazine. 展开更多
关键词 biological nutrient removal ATRAZINE anaerobic/anoxic/oxic(A^(2)O)process oxygen demand removal oxygen uptake rate(OUR)
原文传递
一体化厌氧-变级数缺氧/好氧循环流污水处理装置中试研究
11
作者 姚望 蒋剑虹 +1 位作者 唐清畅 翟云波 《湖南师范大学自然科学学报》 CAS 北大核心 2024年第4期97-103,142,共8页
针对现有村镇污水处理技术与装备的不足,开发出适用于村镇污水处理的新型一体化厌氧-变级数缺氧/好氧循环流(A-(AO)_n)同步脱氮除磷、沉淀分离技术与装备,以长沙某污水提升泵站沉砂池的出水作为处理对象开展中试实验。对好氧区不同溶解... 针对现有村镇污水处理技术与装备的不足,开发出适用于村镇污水处理的新型一体化厌氧-变级数缺氧/好氧循环流(A-(AO)_n)同步脱氮除磷、沉淀分离技术与装备,以长沙某污水提升泵站沉砂池的出水作为处理对象开展中试实验。对好氧区不同溶解氧、填料填充比和分区进水条件下装置污水处理效能的变化进行研究,结果表明:当好氧区溶解氧控制在1.5~2.0 mg/L,好氧区填料填充比为30%时,装置的脱氮除磷效果最佳。在不外加碳源且不投加化学除磷药剂的条件下,出水水质优于《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准。高通量测序结果显示,好氧区投加悬浮球填料后,系统中微生物总量和多样性明显提高,为系统中发生同步硝化反硝化(SND)现象创造了条件。 展开更多
关键词 生活污水 一体化设备 变级数缺氧/好氧循环流工艺 脱氮除磷
下载PDF
鸡粪堆肥过程中氮素损失研究综述
12
作者 曹丽娜 暴振康 +1 位作者 王岩 李红丽 《广西师范大学学报(自然科学版)》 CAS 北大核心 2024年第3期27-33,共7页
好氧堆肥是实现鸡粪资源化处理最主要的技术手段之一。然而在鸡粪堆肥过程中氮素损失较为严重,在降低肥效的同时,还引起严重的面源污染。本文总结影响鸡粪堆肥过程氮素损失的主要原因,并综述初始C/N、初始含水率、翻堆频率、添加剂种类... 好氧堆肥是实现鸡粪资源化处理最主要的技术手段之一。然而在鸡粪堆肥过程中氮素损失较为严重,在降低肥效的同时,还引起严重的面源污染。本文总结影响鸡粪堆肥过程氮素损失的主要原因,并综述初始C/N、初始含水率、翻堆频率、添加剂种类对鸡粪堆肥过程氮素损失的影响,得出减少鸡粪堆肥氮素损失的最适初始C/N为20~25、初始含水率为60%~65%、翻堆频率为7天1次。复合添加剂较单一添加剂更能降低堆肥过程中的氮素损失。最后提出鸡粪堆肥未来方向的研究展望,为今后进行鸡粪堆肥过程中氮素损失的研究提供理论依据。 展开更多
关键词 鸡粪 好氧堆肥 氮素损失 工艺条件 添加剂种类
下载PDF
好氧颗粒污泥技术处理化工园区工业污水 被引量:1
13
作者 周恩胜 莫凡 +1 位作者 许建民 刘青 《化工环保》 CAS CSCD 北大核心 2024年第3期449-454,共6页
采用好氧颗粒污泥技术处理化工园区企业排放的工业污水,实现了污泥颗粒化。工艺启动和可靠性研究结果表明,直径不小于0.2 mm的球形或椭球形致密颗粒污泥占比约60%,为橙黄色,SV5接近300 mL/L。在冬季不加任何化学药剂的情况下,出水总氮小... 采用好氧颗粒污泥技术处理化工园区企业排放的工业污水,实现了污泥颗粒化。工艺启动和可靠性研究结果表明,直径不小于0.2 mm的球形或椭球形致密颗粒污泥占比约60%,为橙黄色,SV5接近300 mL/L。在冬季不加任何化学药剂的情况下,出水总氮小于10 mg/L。该技术运行平稳,水质波动适应性强,操作弹性大,吨水电耗为0.23 kW·h,与传统的A^(2)O相比,能耗节约明显,同时占地面积显著减小。 展开更多
关键词 好氧颗粒污泥 污水处理 过程优化
下载PDF
苯酚对好氧颗粒污泥处理建筑涂料废水的影响及机制
14
作者 李芳 郑现菊 +1 位作者 陈明 黄伟豪 《水处理技术》 CAS CSCD 北大核心 2024年第6期113-118,共6页
苯酚是建筑涂料常被使用的物质,然而苯酚对好氧颗粒污泥(AGS)处理建筑涂料废水过程内污泥颗粒化进程及运行效能的影响很少被研究。为填补相关研究工作空白,本研究考察了苯酚浓度对AGS处理建筑涂料废水过程内污泥颗粒化及运行效能的影响... 苯酚是建筑涂料常被使用的物质,然而苯酚对好氧颗粒污泥(AGS)处理建筑涂料废水过程内污泥颗粒化进程及运行效能的影响很少被研究。为填补相关研究工作空白,本研究考察了苯酚浓度对AGS处理建筑涂料废水过程内污泥颗粒化及运行效能的影响并分析了相关机制。结果表明低于0.2 mg/L苯酚对AGS影响不明显,而超过2.0 mg/L苯酚降低了AGS颗粒化进行并降低了AGS处理建筑涂料废水的效能。机制分析表明高浓度苯酚降低了AGS内污泥浓度,并减少了有机质占比,此外高浓度苯酚提高了胞外聚合物(EPS)包括SB-EPS和LB-EPS的含量。超过2.0 mg/L苯酚降低了AGS处理废水的运行效能,其在20.0 mg/L苯酚组别内,COD、NH_(4)^(+)-N和总氮(TN)去除率下降至81.6%~83.5%、81.6%~84.5%和50.8%~51.9%。此外,高浓度苯酚降低了比耗氧速率,降低了微生物代谢,进而导致营养盐去除受抑制。研究结果为AGS处理含苯酚的建筑涂料废水提供了一定的数据支撑。 展开更多
关键词 好氧颗粒污泥 建筑涂料废水 颗粒化进程 胞外聚合物
下载PDF
好氧颗粒污泥处理锅炉脱硫废水的性能及机制探究
15
作者 崔毅 惠晓梅 马爽 《水处理技术》 CAS CSCD 北大核心 2024年第5期102-106,112,共6页
为了探究好氧颗粒污泥(AGS)对锅炉脱硫废水处理效能及作用机制,以AGS和锅炉脱硫废水为探究对象,构建了AGS和传统A~2/O工艺,在中温条件下比较了AGS和传统A~2/O工艺对锅炉脱硫废水处理效能的影响,并解析相关作用机制。结果表明,相较于传统... 为了探究好氧颗粒污泥(AGS)对锅炉脱硫废水处理效能及作用机制,以AGS和锅炉脱硫废水为探究对象,构建了AGS和传统A~2/O工艺,在中温条件下比较了AGS和传统A~2/O工艺对锅炉脱硫废水处理效能的影响,并解析相关作用机制。结果表明,相较于传统A~2/O工艺,AGS处理锅炉脱硫废水具有更优的污染物和营养盐去除,在AGS工艺内,化学需氧量(COD)、NH_(4)^(+)-N和总氮(TN)的去除率分别高达94.6%~97.8%、94.3%和74.3%。AGS工艺内胞外聚合物(EPS)含量高于传统A~2/O工艺。在内聚物聚羟基脂肪酸酯(PHA)富集方面,AGS展示出更大富集量,可高达5.87 mmol/g,但糖原质的代谢水平下降。AGS内微生物群落主要是Proteobacteria、Bacteroidetes、Firmicutes,其中Bacteroidetes和Nitrospirae的相对丰度显著高于传统A~2/O工艺。研究结果为锅炉脱硫废水的高效处理提供一定的技术支撑。 展开更多
关键词 锅炉废水 好氧颗粒污泥 传统A~2/O工艺 聚合物 微生物群落
下载PDF
污水生化处理工艺发展阶段化技术特征及未来趋势 被引量:2
16
作者 刘智晓 吴凡松 《给水排水》 CSCD 北大核心 2024年第4期12-22,共11页
百余年来,伴随人类社会和科技日新月异,污水生化处理技术也在实现快速发展与不断迭代,新工艺与新反应器、新功能微生物与新生化代谢途径不断被提出、发现和解析,并进一步推动了污水处理技术的进步与升级。回顾了过去百余年污水生化处理... 百余年来,伴随人类社会和科技日新月异,污水生化处理技术也在实现快速发展与不断迭代,新工艺与新反应器、新功能微生物与新生化代谢途径不断被提出、发现和解析,并进一步推动了污水处理技术的进步与升级。回顾了过去百余年污水生化处理技术发展历程,就典型污水生化工艺,结合技术研发进展、技术成熟度及案例应用情况,给出了不同生化处理工艺代际划分与技术发展期“S曲线”,分析了近些年来新涌现出的一些革新性污水生化处理工艺的技术原理、技术特征,结合实际案例分析了工艺技术特征、技术优势与总体效能,从工艺强化、绿色低碳与集约高效等方面总结了未来污水处理发展的技术趋势,以期为“双碳背景”下排水系统提质增效工作、未来国内前瞻性污水厂工艺设计与运行提供参考和借鉴。 展开更多
关键词 污水生物处理 活性污泥 生物膜 工艺强化 好氧颗粒污泥 短程反硝化-厌氧氨氧化 低碳依赖性脱氮除磷
下载PDF
高效包埋好氧颗粒污泥在农药废水处理中的应用研究
17
作者 陈鑫 张建海 孙端磊 《工业用水与废水》 CAS 2024年第3期67-70,共4页
为了高效处理有毒有害的农药废水,研究了包埋好氧颗粒污泥对实际农药废水的处理效果,并对比了包埋好氧颗粒污泥、市政好氧污泥及两者混合体系在实际农药废水活性污泥法处理中的表现。结果表明:在实际农药废水处理中,市政好氧污泥的硝化... 为了高效处理有毒有害的农药废水,研究了包埋好氧颗粒污泥对实际农药废水的处理效果,并对比了包埋好氧颗粒污泥、市政好氧污泥及两者混合体系在实际农药废水活性污泥法处理中的表现。结果表明:在实际农药废水处理中,市政好氧污泥的硝化速率和COD降解速率分别为0.67 mg[N]/(g[SS]·h)和3.54 mg[COD]/(g[SS]·h),两者混合体系的平均硝化速率和COD降解速率分别为5.0 mg[N]/(g[包埋颗粒]·h)和49.05 mg[COD]/(g[包埋颗粒]·h),而包埋好氧颗粒污泥的平均COD降解速率为91.14 mg[COD]/(g[包埋颗粒]·h),并且具有更好的硝化性能,平均硝化速率为18.8 mg[N]/(g[SS]·h)。包埋好氧颗粒污泥对农药废水表现出较强的耐冲击负荷能力,说明了包埋好氧颗粒污泥的投加对提高农药废水氨氮降解效果显著。 展开更多
关键词 包埋好氧颗粒污泥 市政好氧污泥 硝化效果 农药废水 活性污泥法
下载PDF
不同工艺处理辛辣类调味品废水及辣椒素抑制性研究
18
作者 马迁 闫宝亨 +3 位作者 杨洋 李增辉 戴捷 涂军桥 《水处理技术》 CAS CSCD 北大核心 2024年第2期111-115,共5页
针对辛辣类调味品废水对微生物产生抑制导致生化处理困难的现状,进行了AAOO短时好氧工艺与A^(2)O工艺的中试实验,比较2种工艺在去除COD、NH_(4)^(+)-N、TP上的差异,并研究了辣椒素对未强化活性污泥的抑制作用。结果表明:AAOO短时好氧工... 针对辛辣类调味品废水对微生物产生抑制导致生化处理困难的现状,进行了AAOO短时好氧工艺与A^(2)O工艺的中试实验,比较2种工艺在去除COD、NH_(4)^(+)-N、TP上的差异,并研究了辣椒素对未强化活性污泥的抑制作用。结果表明:AAOO短时好氧工艺较A^(2)O工艺处理辛辣类调味品废水优势明显,对COD、NH_(4)^(+)-N、TP和辣椒素的平均去除率分别达到95.6%、90.1%、96.7%和90.9%;AAOO短时好氧工艺分池培养优势菌种以实现高效脱氮除磷,装置连续稳定运行80 d,出水COD、NH_(4)^(+)-N、TP数值稳定在55、6.5、0.5 mg/L以下,满足GB 8978-1996中一级排放标准;AAOO装置出水生物抑制性物质浓度稳定在0.6 mg/L以下,说明该工艺对辣椒素类废水有一定的抗冲击能力。研究结果可为处理辛辣类废水提供重要参考及AAOO短时好氧工艺的应用提供思路。 展开更多
关键词 辛辣类废水 AAOO短时好氧工艺 辣椒素 脱氮除磷 抑制性实验
下载PDF
Synergistic catalysis of the N-hydroxyphthalimide on flower-like bimetallic metal-organic frameworks for boosting oxidative desulfurization
19
作者 Jing He Kun Zhu +5 位作者 Wei Jiang Dong-Ao Zhu Lin-Hua Zhu Hai-Yan Huang Wen-Shuai Zhu Hua-Ming Li 《Petroleum Science》 SCIE EI CAS CSCD 2024年第1期674-682,共9页
Synergic catalytic effect between active sites and supports greatly determines the catalytic activity for the aerobic oxidative desulfurization of fuel oils.In this work,Ni-doped Co-based bimetallic metal-organic fram... Synergic catalytic effect between active sites and supports greatly determines the catalytic activity for the aerobic oxidative desulfurization of fuel oils.In this work,Ni-doped Co-based bimetallic metal-organic framework(CoNi-MOF)is fabricated to disperse N-hydroxyphthalimide(NHPI),in which the whole catalyst provides plentiful synergic catalytic effect to improve the performance of oxidative desulfurization(ODS).As a bimetallic MOF,the second metal Ni doping results in the flower-like morphology and the modification of electronic properties,which ensure the exposure of NHPI and strengthen the synergistic effect of the overall catalyst.Compared with the monometallic Co-MOF and naked NHPI,the NHPI@CoNi-MOF triggers the efficient activation of molecular oxygen and improves the ODS performance without an initiator.The sulfur removal of dibenzothiophene-based model oil reaches 96.4%over the NHPI@CoNi-MOF catalyst in 8 h of reaction.Furthermore,the catalytic product of this aerobic ODS reaction is sulfone,which is adsorbed on the catalyst surface due to the difference in polarity.This work provides new insight and strategy for the design of a strong synergic catalytic effect between NHPI and bimetallic supports toward high-activity aerobic ODS materials. 展开更多
关键词 Metal-organic frameworks DOPED BIMETALLIC N-HYDROXYPHTHALIMIDE aerobic processes Oxidative desulfurization
下载PDF
好氧脱氮菌剂的制备及其强化餐厨废水脱氮研究
20
作者 武俊 文顺冬 +2 位作者 樊哙 杨虎 朱红旭 《云南冶金》 2024年第1期85-91,共7页
针对餐厨废水高有机物、高氨氮的问题,采用计算机辅助菌种选择技术从餐厨垃圾中分离得到了好氧脱氮菌株。试验结果:在培养温度为35℃、间歇震荡和培养时间108 h的条件下,好氧脱氮菌株在培养液中的活菌数达到8.83×10^(7) cfu/mL。在... 针对餐厨废水高有机物、高氨氮的问题,采用计算机辅助菌种选择技术从餐厨垃圾中分离得到了好氧脱氮菌株。试验结果:在培养温度为35℃、间歇震荡和培养时间108 h的条件下,好氧脱氮菌株在培养液中的活菌数达到8.83×10^(7) cfu/mL。在SBR反应器中加入自制的含有菌剂的污泥,反应器出水氨氮去除率达到82.10%~87.92%,与未加菌剂时的氨氮去除率62.37%~68.65%相比脱氮率提升了19.5%,表明本研究的好氧脱氮菌剂对废水脱氮具有强化效果。 展开更多
关键词 CASCADE技术 复合菌剂 好氧脱氮 SBR工艺 餐厨废水
下载PDF
上一页 1 2 33 下一页 到第
使用帮助 返回顶部