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The Effect of Non-acidified Wastewater on Expanded Granular Sludge Bed (EGSB) Reactors Performance
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作者 Ton That Lang Salih Rebac 《Journal of Environmental Science and Engineering(A)》 2017年第5期243-248,共6页
The textile processing plants utilize a wide variety of dyes and other chemicals such as acids, bases, salts, detergents, sizes, oxidants, mercerizing and finishing chemicals. Many of these are not retained in the fin... The textile processing plants utilize a wide variety of dyes and other chemicals such as acids, bases, salts, detergents, sizes, oxidants, mercerizing and finishing chemicals. Many of these are not retained in the final product and are discharged in the effluent. Therefore, the objective of this study was to assess the performance of EGSB (Expanded Granular Sludge Bed) reactor to treat non-acidifie wastewater. Several experiments using starch and volatile fatty acids as model substrates were conducted. The problems of piston formation were evaluated at a variety of relevant operational conditions, such as substrate concentration, organic and hydraulic loading rates. The results showed that newly grown acidogenic biomass diluted original methanogenic biomass and the granular sludge in the EGSB reactor deteriorated. The piston formation in the EGSB reactor that was fed with non-acidified wastewater occurred due to high growth of acidogenic biomass and high upflow velocity applied in the system. 展开更多
关键词 Non-acidified wastewater starch wastewater egsb expanded granular sludge bed).
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Stability of expanded granular sludge bed process for terylene artificial silk printing and dyeing wastewater treatment 被引量:6
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作者 GUANBao-hong 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2005年第3期419-424,共6页
Terylene artificial silk printing and dyeing wastewater(TPD wastewater), containing averaged 710 mg/L terephthalic acid(TA) as the main carbon source and the character pollutant, was subjected to expanded granular slu... Terylene artificial silk printing and dyeing wastewater(TPD wastewater), containing averaged 710 mg/L terephthalic acid(TA) as the main carbon source and the character pollutant, was subjected to expanded granular sludge bed(EGSB) process. The stability of the EGSB process was firstly conducted by laboratory experiment. TA ionization was the predominated factor influencing the acid-base balance of the system. High concentration of TA in wastewater resulted in sufficient buffering capacity to neutralize the volatile fatty acids(VFA) generated from substrate degradation and provided strong base for anaerobic system to resist the pH decrease below 6.5. VFA and UFA caused almost no inhibition on the anaerobic process and biogas production except that pH was below 6.35 and VFA was at its maximum value. Along with the granulating of the activated sludge, the efficiency of organic removal and production rate of biogas increased gradually and became more stable. After start-up, the efficiency of COD removal increased to 57%—64%, pH stabilized in a range of 7.99—8.04, and production rate of biogas was relatively high and stable. Sludge granulating, suitable influent of pH and loading were responsible for the EGSB stability. The variation of VFA concentration only resulted in neglectable rebound of pH, and the inhibition from VFA could be ignored in EGSB. The EGSB reactor was stable for TPD wastewater treatment. 展开更多
关键词 expanded granular sludge bed STABILITY anaerobic treatment dyeing and printing wastewater
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Performance of Anammox granular sludge bed reactor started up with nitrifying granular sludge 被引量:17
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作者 ZHENGPing LINFeng-mei +1 位作者 HUBao-lan CHENJian-song: 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2004年第2期339-342,共4页
The anaerobic ammonia oxidation(Anammox) granular sludge bed reactor was started up successfully with nitrifying granular sludge. During the operation, the nitrifying granular sludge was gradually converted into Anamm... The anaerobic ammonia oxidation(Anammox) granular sludge bed reactor was started up successfully with nitrifying granular sludge. During the operation, the nitrifying granular sludge was gradually converted into Anammox granular sludge with good settling property and high conversion activity. The Anammox reactor worked well with the shortest HRT of 2 43 h. Under the condition that HRT w as 6 39 h and influent concentration of ammonia and nitrite was 10 mmol/L, the removal of ammonia and nitrite was 97 17% and 100 00%, respectively. Corresponding volumetric total nitrogen loading rate and volumetric total nitrogen conversion rate were 100 83 mmol/(L·d) and 98 95 mmol/(L·d). The performance of Anammox reactor was efficient and stable. 展开更多
关键词 nitrifying granular sludge anaerobic ammonia oxidation(Anammox) granular sludge bed reactor PERFORMANCE
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Several Characteristics of Granular Sludge Blanket and Granular Sludge in Interior Diversion-EGSB Reactor
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作者 Guang Li,Baoliang Geng School of Water Resources & Environment,China University of Geosciences(Beijing),Beijing 100083,China. 《地学前缘》 EI CAS CSCD 北大核心 2009年第S1期74-74,共1页
The influence of up-flow velocity on the working state and characteristics of the granular sludge blanket in Interior Diversion Expanded Granular Sludge Blanket(ID-EGSB)reactor for treating brewery wastewater were s... The influence of up-flow velocity on the working state and characteristics of the granular sludge blanket in Interior Diversion Expanded Granular Sludge Blanket(ID-EGSB)reactor for treating brewery wastewater were studied in this paper.The results show that the proper up-flow velocity(Vup)should be 2.1-3.3 m/h with the COD concentration of 18215-18304 mg/L,while the sludge bed reactor is inflated with expansion rate of 43.7%.When the organic loading rate reaches to 18.22-18.30 kgCOD/(m<sup>3</sup>·d<sup>-1</sup>),COD removal rate remains stabilized above 85.3%and the reactor ran without plug 展开更多
关键词 BREWERY wastewater expanded granular sludge egsb
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Production and application of anaerobic granular sludge produced by landfill 被引量:1
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作者 WANG Jin ZHANG Zhen-jia +2 位作者 ZHANG Zhi-feng QAISAR Mahmood ZHENG Ping 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2007年第12期1454-1460,共7页
Sludge granulation is considered to be the most critical parameter governing successful operation of an upflow anaerobic sludge blanket and expanded granular sludge bed (EGSB) reactors. Pre-granulated seeding sludge... Sludge granulation is considered to be the most critical parameter governing successful operation of an upflow anaerobic sludge blanket and expanded granular sludge bed (EGSB) reactors. Pre-granulated seeding sludge could greatly reduce the required startup time. Two lab-scale and a pilot-scale EGSB reactors were operated to treat Shaoxing Wastewater Treatment Plant (SWWTP) containing wastewater from real engineering printing and dyeing with high pH and sulfate concentration. The microbiological structure and the particle size distribution in aerobic excess sludge, sanitary landfill sludge digested for one year, and the granular sludge of EGSB reactor after 400 d of operation were analyzed through scanning electron microscopy (SEM) and sieves. The lab-scale EGSB reactor seeded with anaerobic sludge after digestion for one year in landfill showed obviously better total chemical oxygen demand (TCOD) removal efficiency than one seeded with aerobic excess sludge after cation polyacrylamide flocculation-concentration and dehydration. The TCOD removed was 470.8 mg/L in pilot scale EGSB reactor at short hydraulic retention time of 15 h. SEM of sludge granules showed that the microbiological structure of the sludge from different sources showed some differences. SEM demonstrated that Methanobacterium sp. was present in the granules of pilot-scale EGSB and the granular sludge produced by landfill contained a mixture of anaerobic/anoxic organisms in abundance. The particle size distribution in EGSB demonstrated that using anaerobic granular sludge produced by sanitary landfill as the seeding granular sludge was feasible. 展开更多
关键词 anaerobic granular sludge expanded granular sludge bed (egsb GRANULATION LANDFILL seeding sludge
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Performance and microbial diversity of an expanded granular sludge bed reactor for high sulfate and nitrate waste brine treatment 被引量:7
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作者 Runhua Liao Yan Li +7 位作者 Xuemin Yu Peng Shi Zhu Wang Ke Shen Qianqian Shi Yu Miao Wentao Li Aimin Li 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2014年第4期717-725,共9页
The disposal of waste brines has become a major challenge that hinders the wide application of ion- exchange resins in the water industry in recent decades. In this study, high sulfate removal efficiency (80%-90%) w... The disposal of waste brines has become a major challenge that hinders the wide application of ion- exchange resins in the water industry in recent decades. In this study, high sulfate removal efficiency (80%-90%) was achieved at the influent sulfate concentration of 3600 mg/L and 3% NaC1 after 145 days in an expanded granular sludge bed (EGSB) reactor. Furthermore, the feasibility of treating synthetic waste brine containing high levels of sulfate and nitrate was investigated in a single EGSB reactor during an operation period of 261 days. The highest nitrate and sulfate loading rate reached 6.38 and 5.78 kg/(m3-day) at SO42--S/NO3-N mass ratio of 4/3, and the corresponding removal efficiency was 99.97% and 82.26% at 3% NaC1, respectively. Meanwhile, 454-pyrosequencing technology was used to analyze the bacterial diversity of the sludge on the 240th day for stable operation of phase X. Results showed that a total of 9194 sequences were obtained, which could be affiliated to 14 phyla, including Proteobacteria, Firmicutes, Chlorobi, Bacteroidetes, Synergistetes and so on. Proteobacteria (77.66%) was the dominant microbial population, followed by Firmicutes (12.23%) and Chlorobi (2.71%). 展开更多
关键词 454-pyrosequencing waste brine denitrification expanded granular sludge bed (egsb reactor
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Optimizing Conditions of Enhancing Granule Sludge Concentration and Performance
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作者 LI Huili LUE Bingnan WANG Dan LIU Xinyue 《Wuhan University Journal of Natural Sciences》 CAS 2007年第3期548-552,共5页
An expanded granular sludge bed (EGSB) reactor was adopted to study the influence factors and rule of enhancing granular sludge concentration and performance. The experiment was performed at 33 ℃, pH 6.0-8.0 with c... An expanded granular sludge bed (EGSB) reactor was adopted to study the influence factors and rule of enhancing granular sludge concentration and performance. The experiment was performed at 33 ℃, pH 6.0-8.0 with continuous flow by adding proper quantity of nutritional trace elements. The results show that SLR was the key of steady operation of EGSB reactor. The increment of the granular sludge was influenced by volume loading rate (VLR), liquid up-flow velocity and sludge loading rate (SLR). Concentration of granular sludge increased rapidly when liquid up-flow velocity was over 0.94 m · h^-1 with SLR being at 1.0-2.0 d ^-1. With the propriety parameters: liquid up-flow velocity 2.52 m · h^-1, SLR 1.0-2.2 d^-1 and VLR 8.2-13.1 kg · m ^3 · d^-1, 23 days' continuous operation resulted in an increment by over 80% of granular sludge concentration in the EGSB reactor, plus good granular sludge property. 展开更多
关键词 expanded granular sludge bed (egsb reactor granular sludge volume loading rate (VLR) Liquid up-flow velocity sludge loading rate (SLR)
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Quick start-up of EGSB reactor treating fresh leachate of municipal solid waste
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作者 刘建勇 边华丹 +6 位作者 曹亚丽 钟江平 胡军 刘强 钱光人 刘峰 邰俊 《Journal of Shanghai University(English Edition)》 CAS 2011年第3期212-217,共6页
An expanded granular sludge bed (EGSB) reactor inoculated with anaerobic granular sludge was started up with its COD removal performance, self-balancing of pH, biogas production rate and characteristics of the granu... An expanded granular sludge bed (EGSB) reactor inoculated with anaerobic granular sludge was started up with its COD removal performance, self-balancing of pH, biogas production rate and characteristics of the granular sludge during the start-up period being investigated. The results indicated that the EGSB reactor can be started up successfully in 27 d by increasing the organic loading rate rapidly. The removal efficiency of COD was maintained above 93% with influent COD concentration of 25 000 mg/L and OLR of 37.94 kgCOD/(m 3 ·d). The EGSB reactor with good pH self-balancing could be fed with fresh leachate of low pH value (4 5). The biogas production rate was closely related with OLR and COD reduction. Every gram of COD fed (consumed) to the reactor produced 0.34 L STP (0.36 L STP ) biogas with 0.21 L STP (0.23 L STP ) methane. Thus, 65% 70% of the produced biogas was methane. Sixty one percentage of COD fed to the reactor was converted to methane, another 33% was converted to biomass by metabolism, and the other 6% was left in the liquid phase. The specific methanogenic activity (SMA) of the granular sludge had increased by 92% after 27 d dynamic incubation. The granular sludge in the reactor had good settlement performance with majority diameter of 1 2 mm. 展开更多
关键词 expanded granular sludge bed (egsb reactor municipal solid waste fresh leachate START-UP BIOGAS
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Startup and operation of anaerobic EGSB reactor treating palm oil mill effluent 被引量:18
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作者 ZHANG Yejian YAN Li +3 位作者 CHI Lina LONG Xiuhua MEI Zhijian ZHANG Zhenjia 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2008年第6期658-663,共6页
A bench-scale expanded granular sludge bed (EGSB) reactor was applied to the treatment of palm oil mill effluent (POME). The reactor had been operated continuously at 35℃ for 514 d, with organic loading rate (OL... A bench-scale expanded granular sludge bed (EGSB) reactor was applied to the treatment of palm oil mill effluent (POME). The reactor had been operated continuously at 35℃ for 514 d, with organic loading rate (OLR) increased from 1.45 to 17.5 kg COD/(m^3·d). The results showed that the EGSB reactor had good performance in terms of COD removal on the one hand, high COD removal of 91% was obtained at two days' of hydraulic retention time (HRT), and the highest OLR of 17.5 kg COD/(m^3·d). On the other hand, only 46% COD in raw POME was transformed into biogas in which the methane content was about 70% (V/V). A 30-d intermittent experiment indicated that the maximum transformation potential of organic matter in raw POME into methane was 56%. Volatile fatty acid (VFA) accumulation was observed in the later operation stage, and this was settled by supplementing trace metal elements. On the whole, the system exhibited good stability in terms of acidity and alkalinity. Finally, the operational problems inherent in the laboratory scale experiment and the corresponding countermeasures were also discussed. 展开更多
关键词 palm oil mill effluent MESOPHILIC anaerobic digestion expanded granular sludge bed (egsb
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Development of a novel modified EGSB reactor for municipal sewage treatment at ambient temperatures 被引量:1
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作者 周雪飞 张亚雷 +2 位作者 张选军 强志民 赵建夫 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2009年第4期554-560,共7页
A novel modified expanded granular sludge bed(EGSBm) reactor was developed for anaerobic treatment of municipal sewage with mixed liquid recirculation instead of effluent recirculation commonly adopted by a convention... A novel modified expanded granular sludge bed(EGSBm) reactor was developed for anaerobic treatment of municipal sewage with mixed liquid recirculation instead of effluent recirculation commonly adopted by a conventional EGSB(EGSBc) reactor.Performances of these two reactors were compared in treating municipal sewage at ambient temperatures ranging from 8 to 26 ℃.At an upflow liquid velocity(Vup) of 10.3 m/h,the mean concentrations of filtrated COD(CODfilt) and COD of the EGSBm effluent were determined to be 59.4 and 95.9 mg/L,respectively,which were significantly lower than those of the EGSBc effluent operated under identical experimental conditions.When the organic loading rate was suddenly increased from 1.2 to 7.2 kg COD/(m3·d),the EGSBm regained the removal efficiency of previous operation phase in 10 d.Hydrodynamic characteristics of the reactors were compared using the residence time distribution(RTD) model.It was found that the treatment efficiency of EGSBm kept increasing as the Vup increased.The polymerase Chain Reaction-Denaturing Gradient Gel Electrophoresis(PCR-DGGE) technique was used to analyze the microbial diversity in EGSBm.Fingerprinting pattern indicated that some species in the inoculating sludge were still reserved in the granular sludge of EGSBm,moreover,several new species occurred. 展开更多
关键词 modified expanded granular sludge bed reactor municipal sewage anaerobic treatment hydrodynamic characteristic PCR-DGGE
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Fe^(2+)对厌氧氨氧化EGSB反应器运行性能的影响
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作者 史天茜 石永辉 +4 位作者 武新颖 张益豪 秦哲 赵春霞 路达 《化工进展》 EI CAS CSCD 北大核心 2023年第9期5003-5010,共8页
厌氧氨氧化(Anammox)在污水处理系统中越来越受到重视,Fe^(2+)对Anammox系统具有重要作用。通过不断提升进水总氮(TN)浓度,本文研究Fe^(2+)对Anammox膨胀颗粒污泥床反应器(EGSB)脱氮性能以及细菌生理变化的影响。当Fe^(2+)浓度从1.00mg/... 厌氧氨氧化(Anammox)在污水处理系统中越来越受到重视,Fe^(2+)对Anammox系统具有重要作用。通过不断提升进水总氮(TN)浓度,本文研究Fe^(2+)对Anammox膨胀颗粒污泥床反应器(EGSB)脱氮性能以及细菌生理变化的影响。当Fe^(2+)浓度从1.00mg/L增加到7.50mg/L时,氮去除效果显著增加,抵抗氮负荷的能力明显增强。同时胞外聚合物(EPS)与血红素c浓度也逐渐增加到最大值分别为242mg/g VSS和3.76μmol/mg pro,细菌活性明显提高。随着Fe^(2+)浓度继续增加到10.0mg/L,反应器脱氮性能下降,EPS与血红素c含量也随之减少,细菌活性降低。因此,7.50mg/L的Fe^(2+)能最大程度增强反应器脱氮性能,提高细菌活性,使颗粒更加致密,促进Anammox污泥沉降和聚集。研究结果有助于深入探索Fe^(2+)对Anammox系统的作用机制,对培育高性能Anammox污泥、保证EGSB反应器的高效稳定运行具有重要意义。 展开更多
关键词 厌氧氨氧化 二价铁 膨胀颗粒污泥床 活性 废水 生物过程
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Kinetics of municipal sewage degradation in EGSB and UASB reactors at 10 ℃
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作者 张选军 张亚雷 +2 位作者 周雪飞 刘洪波 赵建夫 《Journal of Pharmaceutical Analysis》 SCIE CAS 2008年第1期66-70,共5页
Kinetics of municipal sewage degradation in Expanded Granular Sludge Bed(EGSB)and Up-flow Anaerobic Sludge Blanket(UASB)reactors at 10℃ were investigated via continuous experimental equipments.The results indicated t... Kinetics of municipal sewage degradation in Expanded Granular Sludge Bed(EGSB)and Up-flow Anaerobic Sludge Blanket(UASB)reactors at 10℃ were investigated via continuous experimental equipments.The results indicated that the whole reaction process can be simulated by the first-order dynamic equation model.Dynamic parameters such as k,Vmax and Ks of UASB in hydrolysis acidification stage were 1.08 d-1,2.8 d-1 and 372 mg/L comparing to those of 1.18 d-1,3.5 d-1 and 112 mg/L in the methanogenesis stage respectively.The EGSB’s k,Vmax and Ks were 2.91 d-1,14.3 d-1 and 470 mg/L in the hydrolysis acidification stage comparing to those of 1.68 d-1,6.6 d-1 and 103 mg/L in the methanogenesis stage respectively.Comparison of k values of the two stages in UASB and EGSB indicates that hydrolysis acidification stage is the controlling step for the whole reaction process of UASB,while methanogenesis stage is the controlling step in EGSB.Compared with UASB,municipal sewage treatment by EGSB at 10 ℃ can reach the same effluent requirement with lower retention time due to its effluent recirculation. 展开更多
关键词 expand granular sludge bed(egsb) Up-flow Anaerobic sludge Blanket(UASB) municipal sewage KINETICS
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EGSB+两级BioDopp工艺在酿酒废水处理中的应用 被引量:2
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作者 秦天 袁哲 《净水技术》 CAS 2023年第7期110-118,共9页
采用膨胀颗粒污泥床(EGSB)+两级BioDopp工艺应用于西南某酿酒厂高CODCr酿酒废水处理。通过检测启动过程中挥发性脂肪酸(VFA)以及碱度(ALK)的浓度变化,发现VFA质量浓度保持在250 mg/L左右,同时反应器内ALK浓度较高,说明ESBG能实现对酿酒... 采用膨胀颗粒污泥床(EGSB)+两级BioDopp工艺应用于西南某酿酒厂高CODCr酿酒废水处理。通过检测启动过程中挥发性脂肪酸(VFA)以及碱度(ALK)的浓度变化,发现VFA质量浓度保持在250 mg/L左右,同时反应器内ALK浓度较高,说明ESBG能实现对酿酒废水的稳定处理。经过一段时间对酿酒废水的稳定处理,其中EGSB进水CODCr均值在50 000 mg/L,氨氮均值为1 000 mg/L,总氮均值为3 000 mg/L,污染物去除率均超过90%。一级BioDopp生化池CODCr去除率均值达到93.5%,氨氮去除率均值达到88.9%,总氮去除率均值达到83.5%,总磷去除率均值为55.0%。二级BioDopp生化池出水CODCr、氨氮、总氮和总磷均值分别为37.8、2.9、11.3 mg/L和0.30 mg/L,满足《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级A标准。通过计算发现EGSB+两级BioDopp工艺吨水处理成本约为1.76元/(m^(3)·d),低于“升流式式厌氧污泥床(UASB)+AAO”“中和混凝沉淀-内循环(IC)厌氧反应器-接触氧化-曝气生物滤池”以及“UASB+序批式活性污泥法(SBR)”等工艺运行成本,能实现低成本、高处理率的效果。 展开更多
关键词 膨胀颗粒污泥床 两级BioDopp工艺 酿酒废水 污泥特性 经济性分析
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EGSB反应器中颗粒污泥床工作状况及污泥性质研究 被引量:20
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作者 任洪强 丁丽丽 +1 位作者 陈坚 伦世仪 《环境科学研究》 EI CAS CSCD 北大核心 2001年第3期33-36,41,共5页
研究了处理低浓度有机废水的EGSB反应器中颗粒污泥床状况及颗粒污泥的性质 ,结果表明 ,液体表面上升流速 (Vup)是影响EGSB反应器效能的重要参数 ,当进水COD为 6 0 0~ 80 0mg L时 ,较佳的液体表面上升流速 (Vup)为 1 5~ 4 5m h ,在此... 研究了处理低浓度有机废水的EGSB反应器中颗粒污泥床状况及颗粒污泥的性质 ,结果表明 ,液体表面上升流速 (Vup)是影响EGSB反应器效能的重要参数 ,当进水COD为 6 0 0~ 80 0mg L时 ,较佳的液体表面上升流速 (Vup)为 1 5~ 4 5m h ,在此条件下 ,EGSB反应器COD负荷为2 4 5~ 2 5 7kg (m3·d) ,COD去除率大于 85 % ;同时还发现 ,经过一定时间的运行后 ,反应器中颗粒污泥粒径分布、沉降速度、胞外聚合物 (ECP)等性质都发生了明显变化 ,颗粒污泥的平均粒径由 0 85mm增加到 1 78mm ,平均沉降速度由 41 2m h提高到 83 2m h ,而胞外聚合物 (ECP)的含量则由接种污泥的 32 5mg g增加到 5 7 8mg g。 展开更多
关键词 厌氧颗粒膨胀床 颗粒污泥 性质 低浓度 有机废水处理 厌氧处理
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高负荷厌氧氨氧化EGSB反应器的运行及其颗粒污泥的ECP特性 被引量:25
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作者 唐崇俭 郑平 +3 位作者 汪彩华 张吉强 陈建伟 丁爽 《化工学报》 EI CAS CSCD 北大核心 2010年第3期732-739,共8页
高效性是厌氧氨氧化(anaerobic ammonium oxidation,anammox)生物脱氮工艺的优势,污泥颗粒化则是生物反应器高效性的重要原因。控制进水亚硝酸盐浓度为360mg·L-1,回流比为0.5,经过230d的连续运行,逐步将厌氧氨氧化膨胀颗粒污泥床(e... 高效性是厌氧氨氧化(anaerobic ammonium oxidation,anammox)生物脱氮工艺的优势,污泥颗粒化则是生物反应器高效性的重要原因。控制进水亚硝酸盐浓度为360mg·L-1,回流比为0.5,经过230d的连续运行,逐步将厌氧氨氧化膨胀颗粒污泥床(expanded-granular sludgebed,EGSB)反应器(1.1L)的水力停留时间由6.9h缩短至0.30h,获得的容积基质氮去除速率为50.75kg.m-3·d-1,是原有世界最高水平的2倍。在此工况下获得的高负荷厌氧氨氧化颗粒污泥的平均粒径为(2.51±0.91)mm,比污泥厌氧氨氧化活性为1.899kg·(kgVSS)-1·d-1,胞外多聚物(extracellular polymers,ECP)总含量达143.00mg·(gVSS)-1。随着反应器容积基质氮去除速率的提高,反应器内厌氧氨氧化颗粒污泥胞外多聚物含量增加,其中蛋白质含量增加更快,蛋白质的'超量产生'致使颗粒污泥的PN/PS增大,易随水流失。 展开更多
关键词 厌氧氨氧化 egsb反应器 颗粒污泥 胞外多聚物 生物脱氮
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常温下EGSB处理低浓度城市污水的初步研究 被引量:8
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作者 张选军 张亚雷 +3 位作者 方骁 蒋柱武 周雪飞 赵建夫 《中国给水排水》 CAS CSCD 北大核心 2007年第9期81-84,共4页
通过间歇试验和中试研究,初步探讨了悬浮物、温度和溶解氧对膨胀颗粒污泥床(EGSB)在常温下处理低浓度城市污水的影响。中试结果表明,城市污水中的悬浮物在EGSB中能够得到有效去除,不会在系统中沉积而影响运行效果;EGSB的出水可回流且城... 通过间歇试验和中试研究,初步探讨了悬浮物、温度和溶解氧对膨胀颗粒污泥床(EGSB)在常温下处理低浓度城市污水的影响。中试结果表明,城市污水中的悬浮物在EGSB中能够得到有效去除,不会在系统中沉积而影响运行效果;EGSB的出水可回流且城市污水的COD浓度低,缓解了温度对系统的影响,EGSB对CODtotal的去除率可保持在70%左右;颗粒污泥的外层兼性菌消耗了溶解氧,保护了产甲烷菌,减轻了溶解氧对颗粒污泥降解城市污水的抑制作用。初步研究结果表明,悬浮物、温度和溶解氧对EGSB在常温下处理低浓度城市污水不会产生不利影响。 展开更多
关键词 膨胀颗粒污泥床 城市污水 颗粒污泥 溶解氧
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EGSB-CAAS工艺处理茶多酚废水的工业化研究 被引量:17
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作者 任洪强 丁丽丽 王晓蓉 《环境科学学报》 CAS CSCD 北大核心 2002年第6期792-795,共4页
应用“EGSB CAAS”工艺处理茶多酚废水的工业化研究表明 ,当进水COD为 36 96 0— 4 3182mg L、SS为 6 5 6 2— 10 90 4mg L时 ,经混凝气浮预处理后 ,采用“EGSB CAAS”工艺进行处理 ,系统COD和SS去除率达 99%以上 ,出水可达标排放 .
关键词 厌氧消化 egsb反应器 茶多酚废水 废水处理 egsb-CAAS工艺 工业化研究
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厌氧颗粒污泥膨胀床(EGSB)处理生活污水试验研究 被引量:14
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作者 李再兴 杨景亮 +2 位作者 叶莉 郭建博 尹明 《环境工程学报》 CAS CSCD 北大核心 2008年第10期1345-1348,共4页
采用厌氧颗粒污泥膨胀床(EGSB)反应器在常温下处理小区生活污水,接种颗粒污泥。试验结果表明:当进水COD 411-560 mg/L,反应器容积负荷可达到3 kg COD/(m3.d),水力停留时间4 h,上升流速8 m/h,COD去除率可达到85%以上,出水COD为67-88... 采用厌氧颗粒污泥膨胀床(EGSB)反应器在常温下处理小区生活污水,接种颗粒污泥。试验结果表明:当进水COD 411-560 mg/L,反应器容积负荷可达到3 kg COD/(m3.d),水力停留时间4 h,上升流速8 m/h,COD去除率可达到85%以上,出水COD为67-88 mg/L。并对EGSB反应器的结构及运行控制参数进行了优化,使其适宜于在常温下处理生活污水及其他低浓度有机废水。 展开更多
关键词 egsb反应器 生活污水 废水处理 常温 颗粒污泥
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EGSB处理玉米淀粉生产废水中试研究 被引量:13
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作者 石宪奎 倪文 王凯军 《环境工程》 CAS CSCD 北大核心 2005年第1期17-19,共3页
研究了厌氧膨胀颗粒 (EGSB)反应器处理玉米生产废水的运行过程现象 ,结果表明 ,液体表面上升流速是影响EGSB反应器效能的重要参数 ,当进水CODCr为 35 0 0~ 6 5 0 0mg L时 ,液体表面上升流速为 1~ 3 5m h时 ,EGSB反应器处理始终保持在 ... 研究了厌氧膨胀颗粒 (EGSB)反应器处理玉米生产废水的运行过程现象 ,结果表明 ,液体表面上升流速是影响EGSB反应器效能的重要参数 ,当进水CODCr为 35 0 0~ 6 5 0 0mg L时 ,液体表面上升流速为 1~ 3 5m h时 ,EGSB反应器处理始终保持在 85 %以上 ,污泥经过选择后能够适应EGSB反应器的运行条件。 展开更多
关键词 egsb反应器 生产废水 厌氧 污泥 CODC 中试研究 运行条件 处理 影响 适应
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低COD浓度废水启动EGSB反应器 被引量:10
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作者 白玉华 张代钧 +2 位作者 祖波 张萍 汪林 《环境工程学报》 CAS CSCD 北大核心 2007年第4期29-33,共5页
以厌氧活性污泥和好氧活性污泥接种于2个膨胀颗粒污泥床(EGSB)反应器中,进水流量为10mL/min,回流量为180mL/min,进水COD浓度在180mg/L左右,有机负荷率(OLR)为1.728kgCOD/m^3·d左右,污泥负荷率(SLR)为0.19kgCOD/k... 以厌氧活性污泥和好氧活性污泥接种于2个膨胀颗粒污泥床(EGSB)反应器中,进水流量为10mL/min,回流量为180mL/min,进水COD浓度在180mg/L左右,有机负荷率(OLR)为1.728kgCOD/m^3·d左右,污泥负荷率(SLR)为0.19kgCOD/kgMLSS·d左右,出水COD浓度维持在40mg/L左右,COD去除率达80%以上。控制温度在32~35℃,pH在6.8~7.2,反应器内氧化还原电位在-340mV以下,水力停留时间(HRT)4.2h,上升流速4.86m/h以及加入80mg/L絮凝剂(硫酸铝钾),缩短了启动时间,促进了颗粒污泥的形成。分别经过60d和120d运行,反应器启动成功。结果表明,上升流速、絮凝剂和污泥类型对颗粒污泥的形成有影响;接种好氧活性污泥在低浓度COD下,合理控制负荷速率能成功启动EGSB反应器。 展开更多
关键词 egsb反应器 启动运行 颗粒污泥 低浓度COD
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