污泥活性炭强化SBR法处理垃圾渗滤液的实验研究

为了进一步处理垃圾渗滤液,试验采用污泥活性炭强化序批式间歇反应器（SBR）法进行处理,通过对比普通SBR法试验,得出投加污泥活性炭强化SBR法处理垃圾渗滤液的效果要远远高于普通SBR法。当污泥活性炭的投加量为1.2 g/L,容积负荷为0.5～1.5 kg BOD₅/(m³·d)时,进水1 h,曝气10 h,沉淀1.5 h,闲置1.5 h,处理效果最好,COD的去除率达到了85%,NH³-N的去除率达到了90%。     

SBR法处理高浓度氯霉素废水的实验研究

采用常规活性污泥法、间歇曝气活性污泥法和SBR法对高浓度氯霉素废水进行了对比处理试验。结果表明 ,SBR法优于其他两种方法。当进水COD浓度为 4 910mg L ,COD容积负荷为 9.8kg m3·d ,去除率可达 91.6 %。当废水中NH+4约为 4 5 5mg L时 ,脱氮率可达 6 0 %左右。污泥指数稳定在 88左右。     

SBR工艺数学模型研究进展及其应用

SBR法具有操作简单、运行方式灵活、占地面积小等优点,用于处理间歇排放的工业废水及中小城镇污水取得了巨大成功,并在全世界范围内迅速得到发展和推广应用。随着自控技术的飞速发展和对SBR工艺机理的深入认识,围绕SBR工艺数学模型的研究引起各国学者的重视。回顾了目前SBR法数学模型的研究进展和应用现状,并总结和比较了各种数学模型的优势和不足,特别是对机理模型（白箱模型）和统计模型（黑箱模型）进行了分类、归纳和分析。所有这些数学模型建模与仿真的目的都是为了实现SBR工艺优化控制,为实际SBR污水处理厂的运行提供依据和技术支持。虽然以前的研究有力地推动了数学模型在SBR工艺中的应用,但是在实际应用中还存在很多值得深入研究的问题。最后对SBR工艺数学模型尚待解决的问题进行了总结,并指出今后SBR数学模型的发展方向。     

SBR法处理磺胺废水的试验研究

采用SBR法进行了磺胺废水的处理试验研究。结果表明，SBR处理工艺可有效地处理磺胺废水，在进水CODCr浓度为2901～3147mg/L时，其去除率最高可达94.5%，SO4^2-浓度在4500mg/L以下对处理效率无影响；SBR反应停留时间以32h为宜，曝气周期以8h为佳。     

盐度对序批式反应器与间歇曝气膜生物反应器污水处理效果的影响

采用序批式反应器(SBR)与间歇曝气膜生物反应器(IAMBR)处理模拟生活污水,考察了进水盐度对两反应器污水处理效果的影响。研究表明,当进水盐度为0g/L(以NaCl质量浓度计,下同)时,SBR和IAMBR对总有机碳(TOC)、NH4+-N及TN的去除能力相当,IAMBR未表现出明显的优势;当进水盐度为10g/L时,SBR和IAMBR对TOC、NH4+-N及TN的去除产生明显的差异。IAMBR因为膜的截留与微生物富集作用,对污染物的去除无明显变化,依然保持了较高的污染物去除率,而SBR受盐度冲击影响较大,TOC、NH4+-N及TN的去除率均大幅降低,说明IAMBR具有较高的抗盐度冲击性能。     

SBR法降解味精废水中有机质的试验研究

用 SBR法处理味精废水中有机质的实验结果表明 ,ML SS在 50 0 0～ 6 0 0 0 m g/L、有机负荷在 0 .3～ 0 .4 kg CO DCr·( kg MLSS· d) -1时有机质降解效果最好。二段 SBR法克服了葡萄糖效应 ,提高了有机质的降解效果。其中 SBR( )反应器中有机质降解呈零级反应动力学关系 ,在 SBR( )反应器中有机质降解呈一级反应动力学关系     

SBR降解动力学研究

采用SBR工艺处理有机废水,在已有工艺条件下对生物降解动力学进行了研究,得出生物降解反应为一级反应。研究表明,用Monod公式能较好反映出有机物的降解规律,确定了其动力学参数V_max=14.6306 d^-1,K_s=83.2993 mg/L,得出SBR降解动力学模型为V=14.6306X·S/(83.2993+S)。利用以动力学为基础的动态模拟法优化SBR工艺,实验结果表明该方法合理可行,对SBR的设计与运行有一定的指导作用,可作为SBR反应器扩大实验和设计的依据。     

运行温度对间歇式活性污泥法影响的研究

本文介绍了间歇式活性污泥法处理系统的优点及国外这方面的研究和应用。本文以试验为基础,研究了6,11,15,20,25,30℃等不同的运行温度对间歇法的影响,得到温度越高有机物降解速率越高,出水中残留的难降解有机物浓度越低的结果。首次提出了在间歇法中温度对难降解有机物的降解程度有较大影响的论点。肯定间歇法的一些优点,主张在中小型污水处理厂中推广应用这种工艺。     

限制曝气式间歇活性污泥法的深度处理

1.前言 限制曝气式间歇活性污泥法(以后用限制曝气活性污泥法来记述),是采用曝气时间对活性污泥微生物的栖息环境进行控制,它可以处理高浓度有机废水,是间歇活性污泥法的一种改革的形式. 为了使容易发生污泥膨胀的食品等工厂废水,达到高效率且稳定的处理,对限制曝气式间歇活性污泥法进行了多年研究,并已获得了几项成果.作者采用这一成果的试验     

SBR、PAC—SBR反应器处理制药废水对比研究

盐酸林可霉素原料液生产废水成分复杂、有机物浓度高、含有难生物降解和有抑制作用的抗生素等毒性物质。采用 SBR反应器和 PAC- SBR反应器处理该类废水 ,在曝气时间、废水浓度、葡萄糖及活性炭投加量等方面对废水处理效果进行了对比研究。研究表明 ,从处理效果看 ,PAC- SBR较 SBR有一定的优势 ,但单独采用 SBR或 PAC- SBR法处理将难以达到排放标准 ,必须进行工艺的组合。     

A full-scale sequencing batch reactor system for swine wastewater treatment

A full-scale sequencing batch reactor (SBR) system was evaluated for its ability to remove carbon and nitrogen from swine wastewater. The SBR was operated on four, six-hour cycles each day, with each cycle consisting of 4.5 hours of "React," 0.75 hours of "Settling", 0.75 hours for "Draw" and "Fill." Within each cycle, an amount of wastewater equivalent to about 5% of the reactor volume (5,500 litres) was removed and added. The SBR system was able to remove 82% of biochemical oxygen demand (BOD) and more than 75% of nitrogen. Even though the SBR effluent, with an average effluent BOD5 of about 588 mg L(-1), did not meet the discharge criteria, it enabled a reduction of the land base required for land application of swine wastewater by about 75%. Results indicated that the SBR system was a viable method for the treatment of swine wastewater.     

A full-scale sequencing batch reactor system for swine wastewater treatment

A full-scale sequencing batch reactor (SBR) system was evaluated for its ability to remove carbon and nitrogen from swine wastewater. The SBR was operated on four, six-hour cycles each day, with each cycle consisting of 4.5 hours of “React,” 0.75 hours of “Settling”, 0.75 hours for “Draw” and “Fill.” Within each cycle, an amount of wastewater equivalent to about 5% of the reactor volume (5,500 litres) was removed and added. The SBR system was able to remove 82% of biochemical oxygen demand (BOD) and more than 75% of nitrogen. Even though the SBR effluent, with an average effluent BOD₅ of about 588 mg L^{? 1}, did not meet the discharge criteria, it enabled a reduction of the land base required for land application of swine wastewater by about 75%. Results indicated that the SBR system was a viable method for the treatment of swine wastewater.     

Microbiological and performance evaluation of sequencing batch reactor for textile wastewater treatment

This study focused on laboratory-scaled and real-scaled treatment plant performances and microbiological investigations for the optimum treatment of textile industry wastewater performed with sequencing batch reactor (SBR). As a result of experimental studies of laboratory-scaled SBR treatment unit, optimum treatment efficiency was taken from 0.5 h filling to 1.5 h. reaction to 1.5 h. settlement to 0.5 h. discharge-idle periods. Average chemical oxygen demand (COD) removal efficiency of SBR of laboratory-scaled textile industry was 75%, whereas average turbidity and color removal (coloration number [RES, m(-1)] 586 nm) efficiencies were 90% and 75%, respectively. Optimum reaction and settlement periods were used in a real-scaled plant, and plant efficiency was examined for parameters such as COD, phenol, pH, mixed liquor suspended solids (MLSS) and sludge volume index (SVI). In this study, optimum reaction and settlement periods for treatment of textile industry wastewater were determined within a SBR in a laboratory-scaled plant. These reaction and settlement periods were verified with the measurement of COD, color, and turbidity parameters. Floc structure and protozoa-metazoa species of activated sludge in a SBR were also determined. Optimum reaction and settlement times were used in a real-scaled plant, and plant efficiency was examined for COD, Phenol, pH, MLSS, and SVI parameters. The corresponding values were found as appropriate, acceptable, and meaningful because of variance value of statistical analysis. Protozoa and metazoan in the activated sludge in the laboratory-scaled plant were investigated. Peranema sp., Epistylis sp., Didinium sp., Chilodonella sp., Opercularia sp., Vorticella sp. as protozoa species and Habrotrocha sp., Philodina sp. as metazoa species were determined.     

SBR处理高浓度养猪废水工艺条件

以养猪场废水作为研究对象,采用序列间歇式活性污泥法SBR,通过实验研究了供气量、pH、排泥量、原水稀释倍数、水力停留时间（HRT）对SBR出水水质的影响。结果表明,供气量为375 L/（min·m³）、pH为8.0,并添加排泥100 mL的操作,可使SBR处理效果明显提高,COD、磷和凯氏氮去除率最高分别可达96.37%、94.14%、99.38%。逐步降低进水稀释倍数有利于培养出处理高浓度有机养猪废水的活性污泥,可将平均COD、磷和凯氏氮含量高达9 161.24、33.41和1 502.77 mg/L的养猪废水处理至出水的490.11、5.35和17.84 mg/L。降低HRT对SBR去除率影响不大。     

Removal of silver nanoparticles in simulated wastewater treatment processes and its impact on COD and NH(4) reduction

The increasing utilization of silver nanoparticles in industrial and consumer products has raised concern to wastewater treatment utilities due to its antimicrobial activity. In this work, the removal of citrate stabilized silver nanoparticles (Ag-NPs) during the wastewater treatment processes and its impact on treatment performance were examined. During simulated primary clarification, over 90% of the Ag-NPs remained in the wastewater, indicating that the majority of silver nanoparticles in sewage would enter the subsequent treatment units. During sequencing batch reactor processes, silver nanoparticles were effectively removed in each cycle throughout the 15-d experimental duration. Continuous input of silver nanoparticles into the wastewater did not significantly alter chemical oxygen demand (COD) removal. NH(4) removal was reduced at the beginning of the SBR experiment but quickly recovered at the later stage of the experiment. This study demonstrated that in the near future it is unlikely that citrate-stabilized Ag-NPs released into sewage will cause significant adversary effects on the COD and NH(4) removal of activated sludge processes in municipal wastewater treatment plants.     

Production of polyhydroxyalkanoate during treatment of tomato cannery wastewater.

Polyhydroxyalkanoate (PHA) production was achieved using tomato cannery waste coupled with a mixed microbial culture during wastewater treatment. The two-stage PHA production process comprised a sequencing batch reactor (SBR), operating under a periodic feast-famine regime, to accomplish simultaneously wastewater treatment and selection of PHA-accumulating microbes, followed by a batch reactor for the production of PHA-rich biomass. The SBRs were efficient at removing soluble carbon (84%), ammonia (100%), and phosphorus (76%). Meanwhile, PHA-accumulating microbes were enriched under the SBR operating conditions, and PHA content on a cell-weight basis was within the range 7 to 11% in nonfiltered wastewater and 2 to 8% in filtered wastewater. Subsequently, batch studies were implemented with varying loading rates, ranging from 0.4 to 3.2 food-to-microorganism ratios. A maximum 20% PHA content on a cell-weight basis was obtained. Based on the experimental results, a PHA biosynthesis-degradation kinetic model was developed to (1) aid in the design of a pilot- or full-scale PHA production process coupled with wastewater treatment and (2) determine optimal conditions for harvest of PHA-rich biomass.     

SBR处理模拟氯苯废水

在SBR中利用光合细菌球形红细菌污泥颗粒进行模拟氯苯废水处理的初步研究,结果表明,采用球形红细菌污泥颗粒处理模拟氯苯废水的SBR系统是可行的,其降解氯苯过程符合Monod一级反应动力学方程。当进水氯苯浓度在125～187.5 mg/L变化时,处理效率都能稳定在90.5%～95.6%之间;其最佳工艺条件为反应时间6 h、DO 4.75～5.0 mg/L、沉淀时间1.5 h、污泥颗粒浓度4 000～6 000 mg/L。在污泥颗粒浓度4 000 mg/L、DO 5.0 mg/L、反应时间6 h的最佳条件下,当进水COD为748.1 mg/L、氯苯浓度100 mg/L时,COD的去除率达90.9%,处理后出水COD满足国家一级排放标准要求。     

反硝化除磷颗粒污泥的活性恢复及对生活污水处理能力

实验利用序批式反应器(SBR)考察反硝化除磷颗粒污泥搁置1个月后重新投入运行,其活性恢复能力及对实际生活污水的处理效果。结果表明,颗粒污泥搁置后外观由淡黄色转变为灰黑色,颗粒重新投入反应器,11 d后颜色基本恢复,污泥浓度及活性迅速增加;对COD处理能力的恢复历时14 d,去除率稳定在80.32%以上;颗粒污泥对NH4+-N和PO34--P的去除在40 d时也恢复到正常水平;反硝化聚磷菌(DNPAOs)活性恢复期为50 d。颗粒污泥对低碳氮比的实际生活污水处理结果显示,当C/N<5.1时(生活污水比例>60%),无法满足系统内微生物生长要求,需要外加适量碳源进行补充。