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Advanced treatment of wet-spun acrylic fiber manufacturing wastewater using three-dimensional electrochemical oxidation

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Journal of Environmental Sciences 2016年第12期28卷 21-31页

作者： Tianlong Zheng, qunhui wang Zhining Shi Yue Fang Shanshan Shi Juan wang Chuanfu Wu Department of Environmental Engineering University of Science and Technology Beijing Beijing 100083 China. Beijing Key Laboratory on Resource-oriented Treatment of lndustrial Pollutants University of Science and Technology Beijing Beijing 100083 China School of Earth and Environmental Sciences The University of Adelaide South Australia 5005 Australia

A three-dimensional electrochemical oxidation （3D-EC） reactor with introduction of activated carbon （AC） as particle micro-electrodes was apphed for the advanced treatment of secondary wastewater effluent of a wet-spun acrylic fiber manufacturing plant. Under the optimized conditions （current density of 500 A/m2, circulation rate of 5 mL/min, AC dosage of 50 g, and chloride concentration of 1.0 g/L）, the average removal efficiencies of chemical oxygen demand （CODer）, NH3-N, total organic carbon （TOC）, and ultraviolet absorption at 254 nm （UV2s4） of the 3D-EC reactor were 64.5%, 60.8%, 46.4%, and 64.8%, respectively; while the corresponding effluent concentrations of CODcr, NH3-N, TOC, and UV2s4 were 76.6, 20.1, and 42.5 mg/L, and 0.08 Abs/cm, respectively. The effluent concentration of CODer was less than 100 mg/L, which showed that the treated wastewater satisfied the demand of the integrated wastewater discharge standard （GB 8978-1996）. The 3D-EC process remarkably improved the treatment efficiencies with synergistic effects for CODer, NH3-N, TOC, and UV2s4 during the stable stage of 44.5%, 38.8%, 27.2%, and 10.9%, respectively, as compared with the sum of the efficiencies of a two-dimensional electrochemical oxidation （2D-EC） reactor and an AC adsorption process, which was ascribed to the numerous micro-electrodes of AC in the 3D-EC reactor. Gas chromatography mass spectrometry （GC-MS） analysis revealed that electro- chemical treatment did not generate more toxic organics, and it was proved that the increase in acute biotoxicity was caused primarily by the production of free chlorine.

关键词： Advanced treatment Synergistic effect Three-dimensional electrochemicaloxidation Wet-spun acrylic fiber wastewater

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Cathode catalyst prepared from bacterial cellulose for ethanol fermentation stillage treatment in microbial fuel cell

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Chinese Journal of Chemical Engineering 2021年第12期34卷 256-261页

作者： Huiyu Li Ming Gao Pan wang Hongzhi Ma Ting Liu Jin Ni qunhui wang Tien-Chin Chang Department of Environmental Engineering University of Science and Technology BeijingBeijing Key Laboratory of Resource-oriented Treatment of Industrial PollutantsBeijing 100083China Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry Beijing Technology and Business UniversityBeijing 100048China Institute of Environmental Engineering and Management National Taipei University of TechnologyTaipei 106China

Bacterial cellulose doped with P and Cu was used as a catalyst for a microbial fuel cell(MFC) cathode,which was then used to treat ethanol fermentation stillage from food *** output power,coulombic efficiency(CE),and biological toxicity were *** a series of characterization experiments,the addition of the cathode catalyst was found to improve catalytic activity and accelerate the consumption of the *** resulting maximum output power was 572.16 mW·m^(-2).CE and the removal rate of chemical oxygen demand(COD) in the fermentation stillage by P-Cu-BC reached 26% and 64.5%,*** rate of biotoxicity removal by MFC treatment reached 84.7%.The aim of this study was apply a novel catalyst for MFC and optimize the treatment efficiency of fermentation stillage.

关键词： Microbial fuel cell Oxygen reduction reaction Fermentation Catalyst Biomass Biotoxicity

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Pilot-scale experiments on multilevel contact oxidation treatment of poultry farm wastewater using saran lock carriers under different operation model

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Journal of Environmental Sciences 2019年第3期31卷 336-345页

作者： Tianlong Zheng Peng Li Xiaoyu Ma Xiaohong Sun Chuanfu Wu qunhui wang Ming Gao State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Department of Environmental Engineering University of Science and Technology Beijing Xinkai Water Environmental Investment Co.Ltd Beijing Agro-Biotechnology Research Center Beijing Academy of Agriculture and Forestry Sciences

A pilot-scale multilevel contact oxidation reactors system, coupled with saran lock carriers,was applied for the treatment of poultry farm wastewater. The removal efficiencies of CODcr, ammonia, and the total nitrogen as well as the elimination performance of CODcr and total nitrogen along the three-level contact oxidation tanks under six designed operational models were investigated. Based on the performance of the nitrogen removal of the saran lock carriers and the distribution of anoxic–aerobic interspace under the suitable operation model, the mechanism of nitrogen removal of the system was also explored. The results revealed that the intermittent aeration under parallel model is the most suitable operation model, while the removal efficiencies of CODcr, ammonia, and the total nitrogen were 86.86%, 84.04%, and 80.96%, respectively. The effluent concentration of CODcr,ammonia, and the total nitrogen were 55.6 mg/L, 8.3 mg/L, and 12.0 mg/L, which satisfy both the discharge standard of pollutants for livestock and poultry breeding industry(GB18596–2001) and the first grade of the integrated wastewater discharge standard(GB 8978–1996). Moreover, the mechanism for the nitrogen removal should be attributed to the plenty of anoxic–aerobic interspaces of the biofilm and the three-dimensional spiral structure of the saran lock carriers, where the oxygen-deficient distribution was suitable for the happening of the simultaneous nitrification and denitrification process. Therefore, the multilevel contact oxidation tanks system is an effective pathway for the treatment of the poultry farm wastewater on the strength of a suitable operation model and novel carriers.

关键词： Multilevel contact oxidation tanks Nitrogen removal Mechanism Operation model Poultry farm wastewater Saran lock carriers

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Pollution characteristics of polycyclic aromatic hydrocarbons in common used mineral oils and their transformation during oil regeneration

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Journal of Environmental Sciences 2017年第6期29卷 247-253页

作者： Xiaohui Wu Bo Yue Yi Su Qi Wan Qifei Huang qunhui wang Hongying Cai State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences Beijing 100012China Civil and Environmental Engineering Institute University of Science and Technology BeijingBeijing 100083China The Solid Waste Management Center of Chongqing Chongqing 401147China

The pollution characteristic of polycyclic aromatic hydrocarbons （PAHs） in common used mineral oils, semi-refined oils, refined oils and solid wastes produced during the used mineral oil regeneration process was analyzed. The results showed that total PAHs content in six common used mineral oils was as follows： used engine oil 〉 used quenching oil 〉 used casting oil 〉 used hydraulic oil 〉 used antimst oil 〉 used industrial lubricating oil. Furthermore, this order was dependent on the source of PAHs and oil working temperatures. Additionally, total PAt-Is content in regenerated oils was as follows： semi-refined oil 〉 refined oil 〉 crude oil, which was related to the catalytic cracking process of crude oil and adsorption refining process of semi-refined oil. The ranking of total PAHs content in regenerated wastes varied depending on the regeneration technology used as follows： waste adsorption sand 〉 acid sludge 〉 waste clay 〉 precipitation sludge 〉 cracked residue. In all types of used mineral oils and regenerated wastes, the maximum and minimum proportions of the total PAHs content were composed of 2-3 ring-PAHs and 5-6 ring-PAHs, respectively. The majority of PAHs in the used mineral oils entered into regenerated wastes during regeneration process, while a small number remained in the regenerated oil.

关键词： Used mineral oilPAHsPollution characteristicsRegenerationTransformation

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Sludge reduction during brewery wastewater treatment by hydrolyzation-food chain reactor system

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Frontiers of Environmental Science & Engineering 2008年第1期2卷 32-35页

作者： Lijie LI qunhui wang Xuesong LI Shuo YANG Department of Environmental Engineering University of Science and Technology BeijingBeijing 100083China Department of Environmental Science&Engineering Harbin Institute of TechnologyHarbin 150090China

During brewery wastewater treatment by a hydrolyzation-food chain reactor(FCR)system,sludge was recycled to the anaerobic *** the function of hydrolyzation acidification in the anaerobic segment and the processes of aerobic oxidation and antagonism,preda-tion,interaction and symbiosis among microbes in multi-level oxidation segment,residual sludge could be reduced *** 6-month dynamic experiments show that the average chemical oxygen demand(COD)removal ratio was 92.6% and average sludge production of the aerobic segment was 8.14%,with the COD of the influent at 960–1720 mg/L and hydraulic retention time(HRT)of 12 *** the producedsludge could be recycled and hydrolyzed in the anaerobic segment,no excess sludge was produced during the steady running for this system.

关键词： hydrolyzation multilevel oxidation excess sludge reduction

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Wastewater-nitrogen removal using polylactic acid/starch as carbon source： Optimization of operating parameters using response surface methodology

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Frontiers of Environmental Science & Engineering 2016年第4期10卷 137-146页

作者： Yan GUO Chuanfu WU qunhui wang Min YANG Qiqi HUANG Markus MAGEP Tianlong ZHENG School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China

Nitrogen removal from ammonium-containing wastewater was conducted using polylactic acid （PLA）/ starch blends as carbon source and carrier for fimctional bacteria. The exclusive and interactive influences of operating parameters （i.e., temperature, pH, stirring rate, and PLA-to-starch ratio （PLA proportion）） on nitrification （Y1）, denitrification （Y2）, and COD release rates （Y3） were investigated through response surface methodology. Experimental results indicated that nitrogen removal could be successfully achieved in the PLA/starch blends through simultaneous mtnncatlon anti clenltnncatlon. The carbon release rate of the blends was controllable. The sensitivity of Y1, Y2, and Y3 to different operating parameters also differed. The sequence for each response was as follows： for Y1, pH 〉 stirring rate 〉 PLA proportion 〉 temperature; for Y2, PH 〉 PLA proportion 〉.temperature.〉 stirring rate; and for Y3, stirring rate 〉pH 〉 PLA proportion 〉 temperature. In this study, the following optimum conditions were observed： temperature, 32.0℃; pH 7.7; stirring rate, 200.0 r · min^-1 and PLA proportion 0.4. Under these conditions Y1 Y2 and Y3 were 134.0 μg-N·g-blend^-1·h^-1, 160.9μg-N-g-blend^-1·h^-1, and 7.6 × 10^3 μg-O·g-blend^-1·h^-1, respectively. These results suggested that the PLA/starch blends may be an ideal packing material for nitrogen removal.

关键词： Nitrogen removal Polylactic acid Starch Carbon source Response surface methodology

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Increased Incidence of Severe Adverse Events in Non-Small Cell Lung Cancer Patients with Previous Tuberculosis Episode Treated with PD-1 Inhibitors

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Biomedical and Environmental Sciences 2024年第7期37卷 785-789页

作者： Hui Zhang Jinfeng Yuan Yuanyuan Xu Mengjie Yang Jialin Lyu Xinjie Yang Shuyan Sheng Zhe Qian qunhui wang Yu Pang Ying Hu Department of Medical Oncology Beijing Chest HospitalCapital Medical University&Beijing Tuberculosis and Thoracic Tumor Research InstituteBeijing 101149China Department of Bacteriology and Immunology Beijing Key Laboratory on Drug-Resistant Tuberculosis ResearchBeijing Chest HospitalCapital Medical University/Beijing Tuberculosis&Thoracic Tumor Research InstituteBeijing 101149China Chinese Center for Disease Control and Prevention Beijing 102206China

Lung cancer is the top cause of cancer deaths *** in immune checkpoint inhibitors(ICIs)have transformed cancer treatment,but their use in lung cancer has led to more side *** study examined if past pulmonary tuberculosis(TB)affects ICIs’effectiveness and safety in lung cancer *** reviewed lung cancer patients treated with ICIs at Beijing Chest Hospital from January 2019 to August 2022.

关键词： Lung lung Cancer

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Icotinib, an EGFR-TKI, for the treatment of brain metastases in non-small cell lung cancer:a retrospective study

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Oncology and Translational Medicine 2016年第6期2卷 268-274页

作者： qunhui wang Hua Zheng Ying Hu Baohua Lu Fanbin Hu Hongmei Zhang Baolan Li Department of Oncology Beijing Chest Hospital Capital Medical University

Objective Treatment of brain metastases from non-small cell lung cancer(NSCLC) is a challenge because of the poor prognosis. Icotinib is a new type of oral epidermal growth factor receptor(EGFR) tyrosine kinase inhibitor(TKI) used in the treatment of advanced NSCLC. The aim of this study was to evaluate the efficacy of icotinib in NSCLC patients with brain *** This study reviewed records of 51 NSCLC patients with brain metastases who took icotinib 125 mg, 3 times a day. Response rate, progression free survival, and overall survival were analyzed. SPSS software version 17.0 was used for univariate analysis, and Cox regression analysis to analyze factors affecting survival. Results Thirty-six cases had partial response, 6 cases had stable disease, and 10 cases had progressive disease. In 31 cases, EGFR gene mutation test were performed. EGFR was mutated in 26 cases and was with wild-type in 5 cases. In patients with EGFR mutations, 23 patients responded to icotinib [the disease control rate(DCR) was 88.5%], significantly higher than in patients with wild-type EGFR(1 patient, DCR 20%)(P = 0.005). The overall median progression-free survival(PFS) was 7.6 months. PFS was longer in the patients with EGFR mutations than in those with wild type EGFR(7.8 months vs 1.2 months, P = 0.03). The overall median overall survival(OS) time was 10.7 months. OS was longer in patients with EGFR mutations than in those with wild type EGFR(15.1 months vs 6.7 months, P = 0.003). The main side effects of the treatment were skin rash and diarrhea; no stage 3 or 4 toxic effects occurred. Univariate analysis demonstrated that OS was related to sex, Eastern Cooperative Oncology Group performance status(ECOG PS), smoking history, and EGFR mutation. Multivariate analysis showed that OS was independently related to sex, ECOG PS, and EGFR *** Icotinib has a favorable effect on NSCLC patients with brain metastases harboring EGFR mutations. Icotinib can be a new choice

关键词： non-small cell lung cancer(NSCLC) brain metastases icotinib epidermal growth factor receptor(EGFR)

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Solid Waste Management and Technology Development

Solid Waste Management and Technology Development

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作者： Hu Hualong Wen Xuefeng Li Xiujin wang qunhui Quan Hao

The report retrospeced the development course of solid waste management in our country with the remarkable events in the history of our country’s solid waste management;analyzed the progresses and existing problems i...

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Ultrafiltration recovery of alginate: Membrane fouling mitigation by multivalent metal ions and properties of recycled materials

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Chinese Journal of Chemical Engineering 2020年第11期28卷 2881-2889页

作者： Daqi Cao Jingyi Jin qunhuiwang Xin Song Xiaodi Hao Eiji Iritani Nobuyuki Katagiri Sino-Dutch R&D Centre for Future Wastewater Treatment Technologies/Key Laboratory of Urban Stormwater System and Water Environment Beijing University of Civil Engineering and ArchitectureBeijing 100044China Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants University of Science and Technology BeijingBeijing 100083China Department of Chemical Engineering Nagoya UniversityFuro-choChikusa-kuNagoya-shiAishi 464-8603Japan

Recovery of alginate extracted from aerobic granular sludge(AGS)has given rise to a novel research ***,these extracted alginate solutions have a water content of nearly 100%.Alternately,ultrafiltration(UF)is generally used for concentration of ***,the introduction of multivalent metal ions into alginate may provide a promising method for the development of novel *** this study,membrane fouling mitigation by multivalent metal ions,both individually and in combination,and properties of recycled materials were investigated for UF recovery of sodium alginate(SA).The filtration resistance showed a significantly negative correlation with the concentration of metal ions,arranged in the order of Mg^2+Fe^3++Ca^2+>Ca^2+>Mg^2+.Three mechanisms were proposed in the presence of Fe^3+,such as the decrease of SA concentration,change in p H,and production of hydroxide iron colloids from *** properties of recycled materials(filter cake)were investigated via optical microscope observation,dynamic light scattering,Fourier transform infrared,X-ray photoelectron spectroscopy(XPS),and scanning electron *** results provide further insight into UF recoveries of alginate extracted from AGS.

关键词： Ultrafiltration Recovery Alginate Membrane fouling mitigation Multivalent metal ion Cake property

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