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Pollutant removal from municipal wastewater employing baffled subsurface flow and integrated surface flow-floating treatment wetlands

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Journal of Environmental Sciences 2014年第4期26卷 726-736页

作者： tanveer saeed Abdullah Al-Muyeed Rumana Afrin Habibur Rahman Guangzhi Sun Department of Civil Engineering Ahsanullah University of Science and Technology Department of Civil Engineering Bangladesh University of Engineering and Technology School of Engineering and Physical Sciences James Cook University

This article reports pollutant removal performances of baffled subsurface flow, and integrated surface flow-floating treatment wetland units, when arranged in series for the treatment of municipal wastewater in Bangladesh. The wetland units （of the hybrid system） included organic, inorganic media, and were planted with nineteen types of macrophytes. The wetland train was operated under hydraulic loading fluctuation and seasonal variation. The performance analyses （across the wetland units） illustrated simultaneous denitrification and organics removal rates in the first stage vertical flow wetland, due to organic carbon leaching from the employed organic media. Higher mean organics removal rates （656.0 g COD]（***）） did not completely inhibit nitrification in the first stage vertical flow system; such pattern could be linked to effective utilization of the trapped oxygen, as the flow was directed throughout the media by the baffle walls. Second stage horizontal flow wetland showed enhanced biodegradable organics removal, which depleted organic carbon availability for denitrification. The final stage integrated wetland system allowed further nitrogen removal from wastewater, via nutrient uptake by plant roots （along with nitrification）, and generation of organic carbon （by the dead macrophytes） to support denitrification. The system achieved higher E. coli mortality through protozoa predation, E. coli oxidation, and destruction by UV radiation. In general, enhanced pollutant removal efflciencies as demonstrated by the structurally modified hybrid wetland system signify the necessity of such modification, when operated under adverse conditions such as： substantial input organics loading, hydraulic loading fluctuation, and seasonal variation.

关键词： constructed wetlands loading fluctuation media nitrogen organics seasonal variation

Ammoniacal Nitrogen and Organics Removal Modelling in Vertical Flow Wetlands Treating Strong Wastewaters

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湿地科学 2013年第4期11卷 421-432页

作者： tanveer Ferdous saeed Abdullah A1 Muyeed Guangzhi Sun Department of Civil Engineering Ahsanullah University of Science and Technology Dhaka Bangladesh School of Engineering and Physical Sciences James Cook University Townsville QLD 4811 Australia)

This paper reports a comparative evaluation between 2 kinetic models for predicting nitrification and biodegradable organics(BOD5)removal rates in 5 vertical flow(VF)wetland systems,that received strong wastewaters(***,textile and municipal effluents).The models were formulated by combining first order and Monod kinetics,with continuous-stirred tank reactor(CSTR)flow *** performance of the 2 models had been evaluated with3 statistical parameters:coefficient of determination(R2),relative root mean square error(RRMSE),and model efficiency(ME).The statistical parameters indicated better performance of the Monod CSTR model(over first order CSTR approach),for correlating ammoniacal nitrogen(NH4+—N)and BOD5removal profiles across VF *** Monod coefficient values(from Monod CSTR model)coincided with greater input NH4+—N and BOD5loading,and experimentally measured removal rate(g/(m2·d))*** trends indicate that NH4+—N and BOD5removals in the VF systems were mainly achieved via biological *** the other hand,the rate constants(from the first order CSTR model)did not exhibit such correlations(of Monod coefficients),elucidating their inefficiencies in capturing overall removal *** interference of organics removal on nitrification process(in VF wetlands)was identified through Monod *** deviation between NH4+—N and BOD5Monod coefficients imply incorporation of both coefficients,for calculating the area of a single VF ***,closer performance of the Monod CSTR model for predicting NH4+—N and BOD5removals indicate its potential application,as a design tool for VF systems.

关键词： CSTR 废物处理技术方法 BOD

Robust graph‐based localization for industrial Internet of things in the presence of flipping ambiguities

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CAAI Transactions on Intelligence Technology 2023年第4期8卷 1140-1149页

作者： Mian Imtiaz ul Haq Ruhul Amin Khalil Muhannad Almutiry Ahmad Sawalmeh tanveer Ahmad Nasir saeed Faculty of Electrical Engineering Swedish College of Engineering and TechnologyWah CanttPakistan Department of Electrical Engineering Faculty of Electrical and Computer EngineeringUniversity of Engineering and TechnologyPeshawarPakistan Department of Electrical Engineering Remote Sensing UnitNorthern Border UniversityArarSaudi Arabia Data Science and Artificial Intelligence Department‐College of Science and Information Technology Irbid National UniversityIrbadJordan Innovation Education and Research Center for On‐Device AI Software(Bk21) Department of Computer Science and EngineeringChungnam National UniversityDaejeonRepublic of Korea Department of Electrical and Communication Engineering United Arab Emirates University(UAEU)Al AinUnited Arab Emirates

Localisation of machines in harsh Industrial Internet of Things(IIoT)environment is necessary for various ***,a novel localisation algorithm is proposed for noisy range measurements in IIoT *** position of an unknown machine device in the network is estimated using the relative distances between blind machines(BMs)and anchor machines(AMs).Moreover,a more practical and challenging scenario with the erroneous position of AM is considered,which brings additional uncertainty to the final position ***,the AMs selection algorithm for the localisation of BMs in the IIoT network is *** those AMs will participate in the localisation process,which increases the accuracy of the final location ***,the closed‐form expression of the proposed greedy successive anchorization process is derived,which prevents possible local convergence,reduces computation,and achieves Cramér‐Rao lower bound accuracy for white Gaussian measurement *** results are compared with the state‐of‐the‐art and verified through numerous simulations.

关键词： Cramér‐Rao lower bound greedy successive anchorization industrial internet of things localization

Foliar application of micronutrients enhances crop stand, yield and the biofortification essential for human health of different wheat cultivars

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Journal of Integrative Agriculture 2019年第6期18卷 1369-1378页

作者： Muhammad Zahir Aziz Muhammad Yaseen tanveer Abbas Muhammad Naveed Adnan Mustafa Yasir Hamid Qudsia saeed XU Ming-gang Institute of Soil and Environmental Sciences University of AgricultureFaisalabad 38040Pakistan National Engineering Laboratory for Improving Quality of Arable Land Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081P.R.China College of Environmental and Resources Science Zhejiang UniversityHangzhou 310058P.R.China College of Natural Resources and Environment Northwest Agriculture and Forestry UniversityYangling 712100P.R.China

Globally about half of the world’s population is under micronutrient malnutrition due to poor quality food *** overcome this problem,fortification and biofortification techniques are often *** is considered a better option than fortification due to the easy control of nutrient deficiencies present in daily *** field experiment was conducted to evaluate the effects of foliar application of a micronutrient mixture(MNM)consisting of zinc(Zn),iron(Fe),copper(Cu),manganese(Mn)and boron(B)on yield and flour quality of *** results show the effectiveness of foliar feeding for growth and yield parameters,in addition to the enriching of wheat grains with Zn,Cu,Fe,Mn and *** to the control without foliar feeding,foliar application on wheat crop increased tillering ability,spike length,grain yield and the contents of Zn,Cu,Mn,Fe and B by 21,47,22,22 and 25%in wheat flour,***,foliar feeding of micronutrients could be an effective approach to enrich wheat grains with essential nutrients for correcting malnutrition.

关键词： enrichment biofortification malnutrition micronutrients wheat flour

Is transarterial embolization a valuable treatment option for spontaneous rupture of hepatocellular carcinoma: experience from a tertiary care hospital of South-Asia

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Hepatoma Research 2016年第1期2卷 279-286页

作者： Amna Subhan Butt saeed Hamid Nazish Butt Fatima Sharif tanveer Ul Haq Wasim Jafri Section of Gastroenterology Department of MedicineThe Aga Khan UniversityKarachi 74800Pakistan The Aga Khan University Karachi 74800Pakistan Department of Radiology The Aga Khan UniversityKarachi 74800Pakistan

Aim:Transarterial embolization(TAE)has been found beneficial in treatment of ruptured Hepatocellular carcinoma(HCC)in earlier *** far no data is available from *** aim of this study was to evaluate clinicopathological characteristics,outcomes of patients presented with spontaneously ruptured,unresectable HCC treated with or without TAE and to evaluate the factors associated with 30-day ***:This was a cross sectional ***≥18 years old,presented with spontaneous rupture of unresectable HCC,were *** outcome measures were control of bleeding,in-hospital mortality,30-day mortality and factors associated with 30-days ***:Out of 850 patients,24 patients were diagnosed with spontaneously ruptured *** age was 58.29±15.26 years.A total of 11(45.8%)patients were treated conservatively and 13(54.2%)underwent *** of bleeding due to ruptured HCC was significantly higher for those treated via TAE as compared to those who were treated conservatively(92.3%vs.36.4%,P=0.008).Overall median duration for which the patients remained alive after HCC rupture was longer for TAE group(39 days vs.5 days,P=0.03).In-hospital mortality(30.8% vs.72.7%,P=0.04)and 30-day mortality was also lower in TAE group(38.5%vs.90.9%,P=0.01).Those who underwent TAE had lower risk of mortality then conservative group odds ratio(OR)0.25,95% confidence interval(CI0.07-0.90,P=0.03).Failure to control bleeding was associated with higher 30-day mortality(OR 2.14,95% CI 1.24-3.68,P=0.009).Conclusion:Ruptured HCC is a life threatening complication requiring early diagnosis and *** is an effective and well-tolerated treatment in the management of ruptured HCC.

关键词： Ruptured hepatocellular carcinoma transarterial embolization Pakistan