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1.
Combined treatment of landfill leachate with fecal supernatant in sequencing batch reactor 总被引：2，自引：1，他引：1
A laboratory-scale sequencing batch reactor （SBR） is used to treat landfill leachate containing high concentration of ammonium nitrogen with municipal fecal supernatant. The SBR system is operated in the following sequential phases： fill period, anoxic period, aeration period, settling period, decant and idle period. The results indicated that the average removal efficiencies of COD, BOD5, TN, NH4^＋-N were 93.76%, 98.28%, 84.74% and 99.21%, respectively. The average sludge removal loading rates of COD, BOD5, TN and NH4^＋-N were 0.24 kg/（kg SS.d）, 0.08 kg/（kg SS.d）, 0.04 kg/（kg SS.d） and 0.036 kg/（kg SS.d）, respectively. Highly effective simultaneous nitrification and denitrification was achieved in the SBR system. The ratio of nitrification and denitrification was 99% and 84%, respectively. There was partial NO2^- denitrification in the system. 相似文献
2.
针对垃圾焚烧发电厂产生的废水,采用间歇式活性污泥法(SBR)对其进行处理。工艺运行结果表明,出水水质达到排放指标,并取得较好的经济效果。 相似文献
3.
Phosphate-accumulating aerobic granules cultivated in a sequencing batch reactor were composed of inner rod-shaped bacteria aggregates and outer twining filamentous bacteria. The influence of two-month storage under different conditions on the storage and subsequent reactivation performance of aerobic granules was investigated. After two-month storage the granules sealed at 4 ℃ in distilled water or normal saline (named granules A and granules B, respectively) could maintain their characteristics as before, while the granules idled in the reactor at room temperature (named granules C) exhibited decreased properties. During reactivation, granules A and granules B presented almost identical recovery performance, faster than granules C, in terms of phosphorus removal efficiency, mixed liquor suspended solids (MLSS), phosphate release and accumulating ability. The results suggest that hermetical storage at low temperature promoted the maintenance of the granular properties and the reviving behaviors of phosphateaccumulating aerobic granules, and storage medium had little influence on the storage and recovery performance. 相似文献
4.
卓雄 《福建工程学院学报》2021,(4):365-371
老龄化垃圾渗滤液氨氮(NH3 -N)浓度极高,可生化性差,处理难度大。本研究采用物理化学和生物工艺相结合的方法处理老龄化垃圾渗滤液,动力波吹脱法去除NH3 -N,Fenton氧化法去除生物难降解化合物,A/O型SBR法去除生物可降解成分,创新性地提出了一种动力波吹脱-Fenton-SBR 组合工艺。通过对实验条件的正交分析,确定了最佳的实验参数。结果表明,经动力波吹脱-Fenton-SBR组合工艺处理处理后的垃圾渗滤液,其出水COD 和NH3 -N的去除率最高可达96.67%和97.98%。相比现有的诸多工程实例,本研究提出的组合工艺处理成本低至45.95 元/ t,处理效果更好,成本更低。 相似文献
5.
综述了好氧颗粒污泥颗粒化研究进展及好氧颗粒污泥处理技术在废水生物处理中的应用．着重讨论了好氧颗粒污泥的形成机理,分析了好氧颗粒污泥培养过程中的影响因素,以及好氧颗粒污泥技术在废水生物处理和工程应用中的研究进展．好氧颗粒污泥的形成、发展和成熟过程可分为5个不同阶段,污泥颗粒化过程取决于基质组成与负荷、适当的水力选择压和工艺操作参数等因素． 相似文献
6.
朱蕾 《渭南师范学院学报》2014,29(19):34-38
在处理制革废水中常用SBR工艺,试验探讨了不同HRT、进水pH、COD负荷、NH3-N浓度、活性污泥浓度的运行参数,研究SBR工艺处理制革废水的最优运行参数．结果表明：SBR反应器在进水COD为1500～2000mg／L、NH3-N为150～250mg／L、pH为7．5、运行污泥浓度在3．0g／L左右、曝气时间为18h时COD去除率能达到95％左右,NH3-N去除率达到97％左右,其出水能够达到一级出水标准． 相似文献
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8.
剩余污泥好氧减量实验与经济可行性分析 总被引：1，自引：0，他引：1
通过序批式试验,检测剩余污泥在不同温度条件下（25℃、35℃、45℃）,好氧消化减量反应前后污泥的沉降性、体积和质量的变化;研究污泥在相应条件下消化减量效率及能耗;对比污泥消化减量的其它方法,对剩余污泥高温好氧消化减量的经济可行性进行分析。通过本课题的研究后发现：污水厂剩余污泥通过好氧消化减量处理后污泥的体积与质量大幅度减少,与直接将剩余污泥运输填埋处理方法相比,该方法能够大幅度降低污泥处置成本,具有显著的经济优势。 相似文献
9.
By combining sequencing batch reactor （SBR） activated sludge process and constructed wetland （CW）, this study is to achieve the domestic wastewater treatment. Our purpose was to determine the optimum operating parameters of the combined process. The process involved advantages and shortages of SBR and CW. Under normal temperature, the 3rd cycle （SBR’s operation cycle is 8 h： inflow for 1 h, limited aeration for 3 h, sediment for 1 h, outflow for 1 h, and idling for 2 h; CW’s hydraulic retention time （HRT） is 24.8 h and hydraulic loading is 24.5 m^3/m^2 d） was the best cyclic mode. The effluents can meet the standard GB/T18921-2002： “The reuse of urban recycling water： water quality standard for scenic environment use”. In the 3rd cycle, the efficiency of CW was the maximum, and energy consumption of SBR was the minimum. Under the condition of low dissolved oxygen, the removing efficiency of chemical oxygen demand （COD） and ammonia was not affected obviously. Simultaneously, nitrification and denitrification phenomena occured and phosphorus was absorbed obviously. 相似文献
10.
The quantitative and qualitative composition of Chinese municipal solid waste （MSW） differs significantly from German waste. The focus of this paper is on whether these differences also lead to dissimilar qualities of leachates during storage or landfilling. Leachates ingredients determine the appropriate treatment technique. MSW compositions of the two cities Guilin （China） and Essen （Germany）, each with approx. 600000 inhabitants, are used to simulate Chinese and German MSW types. A sequencing batch reactor （SBR） is used, combining aerobic and anaerobic reaction principles, to test the biodegradability of leachates. Leachates are tested for temperature, pH-value, redox potentials, and oxygen concentration. Chemical oxygen demand （COD） values are determined. Within 8 h, the biodegradation rates for both kinds of leachates are more than 90%. Due to the high organic content of Chinese waste, the degradation rate for Guilin MSW leachate is even higher, up to 97%. The effluent from SBR technique is suitable for direct discharge into bodies of water. 相似文献
11.
A treatability study of industrial wastewater containing chlorinated nitroaromatic compounds (CNACs) by a catalytic ozonation process (COP) with a modified Mn/Co ceramic catalyst and an aerobic sequencing batch reactor (SBR) was investigated.A preliminary attempt to treat the diluted wastewater with a single SBR resulted in ineffective removal of the color,ammonia,total organic carbon (TOC) and chemical oxygen demand (COD).Next,COP was applied as a pretreatment in order to obtain a bio-compatible wastewater for SBR treatment in a second step.The effectiveness of the COP pretreatment was assessed by evaluating wastewater biodegradability enhancement (the ratio of biology oxygen demand after 5 d (BOD5) to COD),as well as monitoring the evolution of TOC,carbon oxidation state (COS),average oxidation state (AOS),color,and major pollutant concentrations with reaction time.In the COP,the catalyst preserved its catalytic properties even after 70 reuse cycles,exhibiting good durability and stability.The performance of SBR to treat COP effluent was also examined.At an organic loading rate of 2.0 kg COD/(m3·d),with hydraulic retention time (HRT)=10 h and temperature (30±2) °C,the average removal efficiencies of NH3-N,COD,BOD5,TOC,and color in a coupled COP/SBR process were about 80%,95.8%,93.8%,97.6% and 99.3%,respectively,with average effluent concentrations of 10 mg/L,128 mg/L,27.5 mg/L,25.0 mg/L,and 20 multiples,respectively,which were all consistent with the national standards for secondary discharge of industrial wastewater into a public sewerage system (GB 8978-1996).The results indicated that the coupling of COP with a biological process was proved to be a technically and economically effective method for treating industrial wastewater containing recalcitrant CNACs. 相似文献
12.
漯河市垃圾渗滤液处理厂采用＂混凝沉淀-A/O-MBR-NF/RO＂工艺处理垃圾渗滤液。该工艺日处理200m3垃圾渗滤液,出水水质满足国家生活垃圾填埋污染控制标准（GB16889-2008）。本文介绍了该渗滤液处理系统的工艺流程,总结分析了工艺设计的要点。 相似文献
13.
对培养嗜高浓度甲醛废水的活性污泥的净化性能进行了研究,研究中采用序批式活性污泥法（SBR）及脱氮除磷工艺（A2/O工艺）．考察了停留时间、溶解氧多少、进水的pH值和水温等对微生物净化高浓度甲醛废水的影响。实验结果表明,进水的pH值在7～9范围内,水温在10～30℃,停留时间控制在48小时,并根据进水浓度的变化选择合适的溶解氧,获得的活性污泥的净化性能最佳。 相似文献
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哈尔滨市柳树林垃圾场垃圾渗滤液对周边土壤污染状况的调查 总被引：2，自引：0，他引：2
在由于城市的发展人口的增加,垃圾产生量逐渐增多,产生的垃圾渗滤液对垃圾场底部及其周围的土壤、地下水造成了严重的污染。通过对污染土壤样品的调查分析,结果表明：在水平方向,垃圾堆放场周围200m范围土壤被严重污染；在垃圾场底部垂直方向,随着深度的增加垃圾渗滤液的含量逐渐的减少,在6m处含量收敛于背景值。 相似文献
16.
填埋已成为我国城市生活垃圾的一种主要处理方式。对填埋过程中产生的垃圾渗滤液进行分析评价并进行处理,已成为防止其造成二次污染的一个必要环节。基于对洛阳市盘龙冢垃圾填埋场渗滤液处理处置的必要性和紧迫性的分析,采用单项污染指数法对其水质进行分析评价,对其污染现状进行分析和讨论,并对其处理现状进行了深入调查。 相似文献
17.
Performance of biological phosphorus removal and characteristics of microbial community in the oxic-settling-anaerobic process by FISH analysis 总被引：1，自引：0，他引：1
Jian-fang Wang Qing-liang Zhao Wen-biao Jin Shi-jie You Jin-na Zhang 《浙江大学学报(A卷英文版)》2008,9(7):1004-1010
Performance of biological phosphorus removal in the oxic-settling-anaerobic （OSA） process was investigated. Cell staining and fluorescent in situ hybridization （FISH） were used to analyze characteristics and microbial community of sludge. Experimental results showed that phosphorus removal efficiency was near 60% and the amount of biological phosphorus accumulation in aerobic sludge of the OSA system was up to 26.9 mg/g. Biological phosphorus removal efficiency was partially inhibited by carbon sources in the continuous OSA system. Contrasted to the OSA system, biological phosphorus removal efficiency was enhanced by 14% and the average total phosphorus （TP） contents of aerobic sludge were increased by 0.36 mg/g when sufficient carbon sources were supplied in batch experiments. Staining methods indicated that about 35% of microorganisms had typical characteristics of phosphorus accumulating organisms （PAOs）. FISH analysis demonstrated that PAOMIX-binding bacteria were predominant microbial communities in the OSA system, which accounted for around 28% of total bacteria. 相似文献
18.
垃圾监测实验的气相色谱方法研究 总被引：1，自引：0，他引：1
在我国卫生填埋仍是垃圾处理的主要方式,对填埋气中的甲烷及垃圾渗滤液中挥发性脂肪酸含量的监测是进行污染治理及资源化利用的前提。研究结果显示,用气相色谱法既可以对填埋气进行分析,也可以对渗滤液中挥发性脂肪酸进行监测,且监测方法简单方便、监测结果精确可靠。 相似文献
19.
陈红 《浙江大学学报(A卷英文版)》2004,5(6):727-732
Specific ATP content of volatile solids was measured to characterize the sludge activity in a sequential anaerobic/aerobic wastewater treatment system, with an upflow anaerobic sludge blanket (UASB) reactor and a three-phase aerobic fluidized bed (AFB) reactor. The wastewater COD level was 2000(3000 mg/L in simulation of real textile wastewater. The ATP content and the specific ATP contents of volatile solids at different heights of the UASB reactor and those of the suspended and immobilized biomass in the AFB reactor were measured. In the UASB reactor, the maximum value of specific ATP (0.85 mg ATP/g VS) was obtained at a hydraulic retention time (HRT) 7.14 h in the blanket solution. In the AFB reactor, the specific ATP content of suspended biomass was higher than that of immobilized biomass and increased with hydraulic retention time reaching a maximum value of 1.6 mg ATP/g VS at hydraulic retention time 4.35 h. The ATP content of anaerobes in the UASB effluent declined rapidly under aerobic conditions following a 2nd-order kinetic model. 相似文献
20.
INTRODUCTION limiting conditions, obligatory aerobic and an- aerobic bacteria will survive in a mixed culture Sequential anaerobic/aerobic wastewater treat- (Gerritse et al., 1992). Little is know about thement has received increasing attention for effective change in the activity of anaerobic bacteria whennutrient removal, enhanced de… 相似文献