共查询到20条相似文献,搜索用时 15 毫秒
1.
为深入了解膜生物反应器(MBR)中微生物代谢产物(SMP)的生成降解以及利用情况,研究了以NH4Cl为惟一能源物质的硝化MBR反应器中SMP浓度以及分子量(MW)变化情况,并运用活性污泥模型3(ASM3)准确地计算出微生物利用底物相关的溶解性产物(UAP)和微生物死亡相关的溶解性产物(BAP)的量分别是多少,最终证明硝化系统中产生的SMP可作为能源物质被异养菌进一步利用,而且相较于BAP而言UAP更易于被生物降解,得出结论 BAP是SMP中的主要污染成分。 相似文献
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为深入了解膜生物反应器(MBR)中微生物代谢产物(SMP)的生成降解以及利用情况,研究了以NH4Cl为惟一能源物质的硝化MBR反应器中SMP浓度以及分子量(MW)变化情况,并运用活性污泥模型3(ASM3)准确地计算出微生物利用底物相关的溶解性产物(UAP)和微生物死亡相关的溶解性产物(BAP)的量分别是多少,最终证明硝化系统中产生的SMP可作为能源物质被异养菌进一步利用,而且相较于BAP而言UAP更易于被生物降解,得出结论BAP是SMP中的主要污染成分。 相似文献
4.
Scheurer M Godejohann M Wick A Happel O Ternes TA Brauch HJ Ruck WK Lange FT 《Environmental science and pollution research international》2012,19(4):1107-1118
Purpose
The two artificial sweeteners cyclamate (CYC) and acesulfame (ACE) have been detected in wastewater and drinking water treatment plants. As in both facilities ozonation might be applied, it is important to find out if undesired oxidation products (OPs) are formed. 相似文献5.
膜生物反应器污泥内源消化及SMP变化 总被引:1,自引:0,他引:1
膜生物反应器(MBR)中高污泥浓度和低F/M会导致部分微生物长期处于贫营养状态下,因此采用污泥内源消化试验模拟MBR中实际存在的贫营养现象。比较了好氧消化(AD)和好氧/缺氧消化(A/A/D)2种模式对于A2O+MBR工艺剩余污泥的内源消化效果及SMP的变化。研究结果表明,常温条件下A/A/D 20 d MLVSS的去除率可达到50%,AD为42%,缺氧段的引入促进了有机物和营养物质等的释放和去除,SMP浓度均呈现出显著降低而后缓慢增长并趋于稳定的趋势。EEM光谱分析表明,SMP中不同的荧光物质在内源消化过程中呈现出不同的变化规律。GPC分析认为,内源消化过程中SMP的分子量范围逐渐扩大,小分子量有机物呈增长趋势,A/A/D对SMP的降解比AD更为有效。 相似文献
6.
Dolar D Ignjatić Zokić T Košutić K Ašperger D Mutavdžić Pavlović D 《Environmental science and pollution research international》2012,19(4):1033-1042
Background
Emerging contaminants (ECs) are commonly derived from industrial wastewater, which is often a consequence of an inadequate treatment of the latter. Improperly pretreated pharmaceutical wastewater could cause difficulties in operations of wastewater treatment plants while incomplete elimination of ECs during the processing might result in their appearance in drinking water. 相似文献7.
Simulation of the influence of industrial wastewater on a municipal sewage treatment plant—a case study 总被引:1,自引:0,他引:1
Ákos Rédey Viola Somogyi József Ányos Endre Domokos Péter Thury Tatiana Yuzhakova 《Environmental science and pollution research international》2011,18(2):192-198
Purpose
Industrial wastewater flow caused operational difficulties in the wastewater treatment plant in Debrecen, Hungary. Bioaugmentation was successfully applied to maintain effluent quality in the periods when wastewater of high starch content was accepted, but, at the end of 2008, the nitrification capacity of the plant decreased considerably due to improperly pre-treated pharmaceutical wastewater. 相似文献8.
Mlaik N Bouzid J Belbahri L Woodward S Mechichi T 《Environmental science and pollution research international》2012,19(1):226-234
Introduction
The unhairing step, a part of the beamhouse process, is particularly polluting, generating an alkaline wastewater with high concentrations of organic and inorganic matter. The aim of this study was to evaluate the treatment of this industrial wastewater using a combination of biological and microfiltration processes. 相似文献9.
Optimization of electro-oxidation process for the treatment of Reactive Orange 107 using response surface methodology 总被引:1,自引:0,他引:1
Rajkumar K Muthukumar M 《Environmental science and pollution research international》2012,19(1):148-160
Introduction
Textile industries release large amount of wastewater to the environment which alters the clarity of water, interfere with light penetration, and pose toxicity to microbes and fish species. In order to remove the dye from wastewater, this study aimed to optimize electro-oxidation process for the degradation of textile dye C.I. Reactive Orange 107 in wastewater using a statistical tool. 相似文献10.
Shelef O Golan-Goldhirsh A Gendler T Rachmilevitch S 《Environmental science and pollution research international》2011,18(7):1234-1242
Introduction
Increasing demand for water has stimulated efforts to treat wastewater for reuse in agriculture. Decentralized facilities for wastewater treatment became popular as a solution to remote and small communities. These systems mimic natural wetlands, cleaning wastewater as they flow through a complex of filter media, microbial fauna, and vegetation. The function of plants in constructed wetlands (CWs) has not been fully elucidated yet. 相似文献11.
Lu Q He ZL Graetz DA Stoffella PJ Yang X 《Environmental science and pollution research international》2011,18(6):978-986
Background, aim and scope
Water quality impairment by heavy metal contamination is on the rise worldwide. Phytoremediation technology has been increasingly applied to remediate wastewater and stormwater polluted by heavy metals. 相似文献12.
Mesquita DP Ribeiro RR Amaral AL Ferreira EC Coelho MA 《Environmental science and pollution research international》2011,18(8):1390-1397
Background, aim, and scope
Fishery wastewater treatment can be compromised due to seasonal production. The use of sequencing batch reactors is not completely successful, despite flexibility being one of the principal advantages. Most research on activated sludge is performed using synthetic wastewater to ensure a stable and constant feed. The current work compared biomass morphology and settling ability using image analysis of synthetic and real fishery wastewaters, with and without NaCl addition. 相似文献13.
Ovejero G Sotelo JL Rodríguez A Vallet A García J 《Environmental science and pollution research international》2011,18(9):1518-1526
Background, aim, and scope
Textile industry produces wastewater which contributes to water pollution since it utilizes a lot of chemicals. Preliminary studies show that the wastewater from textile industries contains grease, wax, surfactant, and dyes. The objective of this study was to determine the treatment efficiency of the nickel catalysts supported on hydrotalcites in three-dye model compounds and two types of wastewater. 相似文献14.
Microbial dynamics in a sequencing batch reactor treating alkaline peroxide mechanical pulp and paper process wastewater 总被引:1,自引:0,他引:1
Peng Zhan Jienan Chen Gang He Guigan Fang Yingqiao Shi 《Environmental science and pollution research international》2010,17(9):1599-1605
Background, aim, and scope
For many years, highly concentrated wastewater generated from the pulp and paper industry has become the focus of much concern worldwide. The objectives of this study were to determine the treatment efficiency of the alkaline peroxide mechanical pulp (APMP) process wastewater using a sequencing batch reactor (SBR) and analyze the microbial dynamics of the wastewater treatment system using the random amplified polymorphic DNA (RAPD) method. 相似文献15.
Matteo Balderacchi Marco Trevisan 《Environmental science and pollution research international》2010,17(3):523-528
Introduction
Human health and the environment are major concerns for European Commission policy on the authorisation of plant protection products. The new regulation that revises and replaces the directive 91/414/EC moves towards the adoption of a Persistent Bioaccumulation Toxicity cutoff criterion because current pesticide risk assessment (PRA) is deterministic, based on few standard cases and therefore characterised by uncertainty. This revision could create concerns about sustainability. 相似文献16.
Wenxin Shi Lizheng Wang Diederik P. L. Rousseau Piet N. L. Lens 《Environmental science and pollution research international》2010,17(4):824-833
Background, aim, and scope
Many pollutants have received significant attention due to their potential estrogenic effect and are classified as endocrine disrupting compounds (EDCs). Because of possible ecological effects and increased attention for water reuse schemes, it is important to increase our understanding of the EDC removal capacities of various wastewater treatment systems. However, there has so far been little research on the fate and behavior of EDCs in stabilization pond systems for wastewater treatment, which represent an important class of wastewater treatment systems in developing countries because of their cost-effectiveness. The aim of this work is to study the fate and behavior of EDCs in algae and duckweed ponds. Because the synthetic hormone 17α-ethinylestradiol (EE2) and the natural hormones estrone (E1), as well as 17β-estradiol (E2), have been detected in effluents of sewage treatment plants and been suggested as the major compounds responsible for endocrine disruption in domestic sewage; E1, E2, and EE2 were therefore chosen as target chemicals in this current work. 相似文献17.
Winter accumulation of acidic pharmaceuticals in a Swedish river 总被引:1,自引:1,他引:0
Atlasi Daneshvar Jesper Svanfelt Leif Kronberg Gesa A. Weyhenmeyer 《Environmental science and pollution research international》2010,17(4):908-916
Purpose
In this study, seasonal variations in the concentration profile of four analgesics and one lipid regulator were monitored on their way from a wastewater treatment plant (WWTP) effluent, along a river, and into a lake. 相似文献18.
石化综合污水处理厂出水溶解性微生物产物的特性 总被引:2,自引:0,他引:2
溶解性微生物产物(soluble microbial products,SMP)是生化系统出水残留COD的主要组成部分,通过采用分子量截留超滤分离、有机物树脂分离等方法对某石化综合污水处理厂出水SMP的分子量分布、亲水特性进行了分析研究.结果表明,水样中的SMP占出水残留COD的85%左右。SMP中主要成分是蛋白质,出水中小于1 kDa的有机物是SMP中的主要物质。树脂分离实验表明,亲水性有机物和疏水酸性有机物分别约占出水SMP的50%和20%,是需要进一步处理削减的主要物质类别。 相似文献
19.
Effects of livestock wastewater variety and disinfectants on the performance of constructed wetlands in organic matters and nitrogen removal 总被引:1,自引:0,他引:1
Hu YS Kumar JL Akintunde AO Zhao XH Zhao YQ 《Environmental science and pollution research international》2011,18(8):1414-1421
Background, aim and scope
Treatment performance of constructed wetlands (CWs) is largely dependent on the characteristics of the wastewater. Although livestock wastewater is readily biodegradable in general, its variety in biodegradability can still be significant in practice. In addition, it is a common practice to periodically use disinfectants in livestock activities for health concerns. Obviously, the residual of the disinfectants in livestock wastewater may have serious inhibitory effect on the microbial activities during wastewater treatment. Thus, the main objective of this study was to examine the variety of livestock wastewater in biodegradability and its effect on the performance of a pilot scale tidal flow CWs (TFCWs) in organic matter and nitrogen removal. Furthermore, investigation of the potential inhibition of the chosen disinfectants on organic matter biodegradation and nitrification was another aim of this study. 相似文献20.
Stefan Gartiser Christoph Hafner Christoph Hercher Kerstin Kronenberger-Schäfer Albrecht Paschke 《Environmental science and pollution research international》2010,17(5):1149-1157