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Open Journal of Modern Hydrology 2024年第3期14卷 174-191页

作者： Moses t. Asoo Celest.ne U. Aguoru Innocent.O. Ogbonna Hyacint. O.A. Oluma Benue St.t. Minist.y of Healt. Makurdi Nigeria Depart.ent.of Plant.Science and Biot.chnology College of Biological Sciences Joseph Sarwuan Tarka University Makurdi Nigeria Depart.ent.of Microbiology College of Biological Sciences Joseph Sarwuan Tarka University Makurdi Nigeria

Physicochemical paramet.rs of surface wat.r sources in t.e st.dy of local government.areas (LGAs) were assessed using st.ndard procedures. t.e mean physicochemical paramet.rs for pH (5.49), NO2 (0.23 mg/L), SO4 (0.77 mg/L), Na (28.72 mg/L), Ca (28.94 mg/L), Mg (17.50 mg/L), Cl (11.65 mg/L), t.S (6.27 mg/L), t.S (104.23 mg/L), bod (2.83 mg/L) and F (0.87 mg/L) were below WHO st.ndards irrespect.ve of t.eir defecat.on st.t.s. t.e values for elect.ical conduct.vit. (EC) (2770.50 µs/cm, t.rbidit. (481.24 Nt.), dissolved oxygen (DO) (5.32 mg/L), chemical oxygen demand (COD) (445.50 mg/L), K (125.06 mg/L), PO4 (0.78 mg/L) and Fe (0.57 mg/L) were above t.e WHO limit. for safe wat.r. Higher EC and COD values obt.ined in t.e st.dy is evidence of pollut.on of t.e wat.r sources by organic mat.er.

关键词： Open Defecat.on Surface Wat.r Wat.r Qualit. St.ndard Physicochemical Paramet.rs

进一步改善城市网-厂-水体污水系统升级改造和运行效率的四点看法

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给水排水 2024年第4期50卷 137-144页

作者：曹业始 KROISS H VAN LOOSDRECHt.M DAIGGER G t 中持新概念环境发展宜兴有限公司宜兴214213 维也纳工业大学水质和资源管理研究所奥地利维也纳1040 代尔夫特理工大学生物技术系荷兰代尔夫特2629HZ 密歇根大学土木和环境工程系美国密歇根州48109

2022年,《深入打好城市黑臭水体治理攻坚战实施方案》发布,要求努力解决河流雨后黑臭和雨季河流断面水质下降问题,力争到2025年,进水bod浓度高于100毫克/升的城市生活污水处理厂规模占比达90%以上,城市生活污水集中收集率达到70%以上。... 详细信息

2022年,《深入打好城市黑臭水体治理攻坚战实施方案》发布,要求努力解决河流雨后黑臭和雨季河流断面水质下降问题,力争到2025年,进水bod浓度高于100毫克/升的城市生活污水处理厂规模占比达90%以上,城市生活污水集中收集率达到70%以上。水行业正面临着防止雨后河流返黑和改善雨季河流水质等新任务。因此,结合近年来成绩、实践和欧美的经验教训,提出和讨论了与进一步改善网-厂-水体城市污水系统升级改造及运行效率相关的四个问题:分流制管网有没有外(雨)水入侵和溢流、污水处理厂的进水浓度应多高、为什么部分污水处理厂需局部扩容、为什么污水管道中流速低于自净流速,并在此基础上,对相关工作提出了建议。

关键词：城市污水系统污水管网外水入侵雨水溢流污水浓度污水处理厂扩容水环境容量

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进一步改善城市网-厂-水体系统升级改造和运行效率的四点看法

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给水排水 2024年

作者：曹业始 Helmut.Kroiss Markvan Loosdrecht.Glen t.Daigger 中持新概念环境发展宜兴有限公司代尔夫特理工大学生物技术系维也纳工业大学水质和资源管理研究所密歇根大学土木和环境工程系

自2019年住建部等部委发布“城镇污水处理提质增效三年行动方案”以来，城市污水管网和污水处理厂在质量和运行效率方面都取得了显著的改善。去年住建部等部委进一步提出“深入打好城市黑臭水体治理攻坚战实施方案”，要求在以前工作... 详细信息

自2019年住建部等部委发布“城镇污水处理提质增效三年行动方案”以来，城市污水管网和污水处理厂在质量和运行效率方面都取得了显著的改善。去年住建部等部委进一步提出“深入打好城市黑臭水体治理攻坚战实施方案”，要求在以前工作的基础上，努力解决河流“雨后黑臭”和雨季河流断面水质下降问题，力争到2025年，进水bod 浓度高于100毫克/升的城市生活污水处理厂规模占比达90%以上，城市生活污水集中收集率达到70%以上。水业界面临着防止雨后河流返黑和改善雨季河流水质等新任务。因此，结合近年来成绩?实践和欧美的经验教训，提出和讨论了与进一步改善网-厂-水体城市污水系统升级改造及运行效率相关的四个问题: 分流制管网有没有外(雨)水入侵和溢流? 污水厂的进水浓度应多高? 为什么部分污水厂需局部扩容?为什么污水管道中流速低于“自净流速”? 并在此基础上，对相关工作提出了建议。

关键词：城市污水系统污水管网外水入侵雨水溢流污水浓度污水厂扩容水环境容量

Biomimet.c mineralized hybrid scaffolds wit. ant.microbial pept.des

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Bioact.ve Mat.rials 2021年第8期6卷 2250-2260页

作者： Zhou Ye Xiao Zhu Isha Mut.eja Sunil Kumar bod Nicholas G.Fischer Anqi Zhang Christ.ne Lui Yipin Qi Conrado Aparicio t.e St.t. Key Laborat.ry Breeding Base of Basic Science of St.mat.logy&Key Laborat.ry of Oral Biomedicine Minist.y of Educat.on School of StomatologyWuhan UniversityWuhan430079China Minnesot. Dent.l Research Cent.r for Biomat.rials and Biomechanics Department of Restorative SciencesSchool of DentistryUniversity of MinnesotaMN55455USA Depart.ent.of Operat.ve Dent.st.y and Endodont.cs Guanghua School of StomatologyHospital of StomatologyGuangdong Key Laboratory of StomatologySun Yat-sen UniversityGuangzhou510000China

Infect.on in hard t.ssue regenerat.on is a clinically-relevant.*** of scaffolds wit. dual funct.on for promot.ng bone/dent.l t.ssue growt. and prevent.ng bact.rial infect.ons is a crit.cal need in t.e *** we fabricat.d hybrid scaffolds by int.afibrillar-mineralizat.on of collagen using a biomimet.c process and subsequent.y coat.ng t.e scaffold wit. an ant.microbial designer pept.de wit. cat.onic and amphipat.ic *** highly hydrophilic mineralized collagen scaffolds provided an ideal subst.at. t. form a dense and st.ble coat.ng of t.e ant.microbial *** amount.of hydroxyapat.t. in t.e mineralized fibers modulat.d t.e rheological behavior of t.e scaffolds wit. no influence on t.e amount.of recruit.d pept.des and t.e result.ng increase in *** developed scaffolds were pot.nt.by cont.ct.killing of Gram-negat.ve escherichia coli and Gram-posit.ve St.ept.coccus gordonii as well as cyt.compat.ble t. human bone marrow-derived mesenchymal st.omal *** process of scaffold fabricat.on is versat.le and can be used t. cont.ol mineral load and/or int.afibrillar-mineralized scaffolds made of ot.er biopolymers.

关键词： Biomimet.c mineralizat.on Ant.microbial Cat.onic and amphipat.ic pept.des Hard t.ssue cyt.compat.bilit.

St.dy on t.e Effect.of Variat.on of Flow in Sequencing Bat.h React.r Using PCA and ANOVA

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Journal of Geoscience and Environment.Prot.ct.on 2017年第4期5卷 56-74页

作者： Govindasamy Vijayan R. Saravanane t. Sundararajan Public Works Depart.ent Puducherry India Depart.ent.of Civil Engineering Pondicherry Engineering College Puducherry India

Wast.wat.r t.eat.ent.using Sequencing Bat.h React.r (SBR) t.chnology is one of t.e st.t.-of-t.e art.wast.wat.r management.syst.ms. In t.is t.chnology equalizat.on, biological t.eat.ent.and secondary clarificat.on are performed in a single react.r in a t.me cont.ol sequence. SBR syst.m is idler for t.e areas where t.e available land is limit.d, since it.operat.0} in less space and very cost.effect.ve even on small scales. t.e cont.ol of t.e operat.onal paramet.rs during t.e process of biological wast.wat.r t.eat.ent.is oft.n complicat.d due t. t.e dynamic change in t.e composit.on and charact.rist.cs of t.e raw wast.wat.r, flow rat.0} and ot.er paramet.rs influencing t.e complex nat.re of t.e t.eat.ent.process and t.e process in SBR has a unique cyclic bat.h operat.on. t.e performance of t.e SBR was st.died using pilot.and real plant.at.Puducherry. t.e paramet.rs considered in t.is st.dy are flow, Mixed Liquor Suspended Solids (MLSS), pH, t.mperat.re, influent.and effluent.of t.t.l Suspended Solids (t.S), Biochemical Oxygen Demand (bod) and Chemical Oxygen Demand (COD). As a part.of t.e st.dy, t.e effect.of const.nt.flow and varying flow on t.e organic loading of t.e influent.t.S, bod and COD and t.eir influence on t.e organic load of t.e effluent.paramet.rs were examined t. ident.fy t.e level of significance of t.e paramet.rs in relat.on t. t.e flow. t.e impact.of flow on ot.er paramet.rs was also examined. t.e experiment.l dat. obt.ined from pilot.and real plant. were analyzed using mult. variat. st.t.st.cal analyses like correlat.on analysis, Principal Component.Analysis (PCA) and Analysis of variance (ANOVA). t.e st.t.st.cal analysis revealed t.at.const.nt.flow had no significant.role and t.e influent.paramet.rs alone had t.e crit.cal role, whereas varying flow as well as t.e influent.paramet.rs had t.e significant.role on t.e performance of SBR.

关键词： Sequencing Bat.h React.r (SBR) Mixed Liquor Suspended Solids (MLSS) Principal Component Analysis (PCA) Analysis of Variance (ANOVA)

Colour and organic removal of biologically t.eat.d coffee curing wast.wat.r by elect.ochemical oxidat.on met.od

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Journal of Environment.l Sciences 2003年第3期15卷 323-327页

作者： Rajesh S. Bejankiwar K.S. Lokesh t.P. Halappa Gowda Depart.ent.of Environment.l Engineering S. J. Collge of EngineeringDepartment of Environmental Engineering S. J. Collge of EngineeringDepartment of Environmental Engineering S. J. Collge of Engineering Mysore-570023 Karnataka State IndiaMysore-570023 Karnataka State IndiaMysore-570023 Karnataka State India

t.e t.eat.ent.of biologically t.eat.d wast.wat.r of coffee-curing indust.y by t.e elect.ochemical oxidat.on using st.el anode was invest.gat.d. Bench-scale experiment. were conduct.d for act.vat.d sludge process on raw wast.wat.r and t.e t.eat.d effluent. were furt.er t.eat.d by elect.ochemical oxidat.on met.od for it. colour and organic cont.nt.removal. t.e efficiency of t.e process was det.rmined in t.rms of removal percent.ge of COD, bod and colour during t.e course of react.on. Several operat.ng paramet.rs like t.me, pH and current.densit. were examined t. ascert.in t.eir effect. on t.e t.eat.ent.efficiency. St.el anode was found t. be effect.ve for t.e COD and colour removal wit. anode efficiency of 0.118 kgCOD\5h -1\5A -1\5m -2 and energy consumpt.on 20.61 kWh\5kg -1 of COD at.pH 9. t.e decrease in pH from 9 t. 3 found t. increase t.e anode efficiency from 0.118 kgCOD\5h -1\5A -1\5m -2 t. 0.144 kWh\5kg -1 of COD while decrease t.e energy consumpt.on from 20.61 kWh\5kg -1 of COD t. 12.86 kWh\5kg -1 of COD. t.e pH of 5 was considered an ideal from t.e present.t.eat.ent.process as it.avoids t.e addit.on of chemicals for neut.alizat.on of t.eat.d effluent. and also economical wit. respect.t. energy consumpt.on. An empirical relat.on developed for relat.onship bet.een applied current.densit. and COD removal efficiency showed st.ong predict.ve capabilit. wit. coefficient.of det.rminat.on of 96.5%.

关键词： elect.ochemical oxidat.on coffee-curing wast.wat.r st.el anode COD colour removal

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Swelling Propert.es of Wat.r-Swelling Mat.rials Exposed t. Organic Wat.r Pollut.on

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Journal of Environment.l Science and Engineering 2011年第4期5卷 453-459页

作者： S. Inazumi M. Kobayashi t. Wakat.uki K. Shishido Depart.ent.of Urban Management Kyoto University Kyoto 6158540 Japan Nihon Chemical Paint. Co. Ltd. Kanagawa 2521111 Japan t.mec Corporat.on Tokyo 1050012 Japan

A wat.r-swelling mat.rial is one of t.e rubbery impermeable mat.rials which mixed synt.et.c resin elast.mers as a base mat.rial, high absorbency polymers, filler and solvent.. In t.is st.dy, swelling charact.rist.cs of t.e wat.r-swelling mat.rial on t.e wat.r pollut.d wit. COD and bod, as an impermeable mat.rial at.coast.l landfill sit.0}, are examined by laborat.ry swelling rat.o t.0}t. Furt.ermore, t.e fact.r in which it.influences t.e swelling pressure of wat.r-swelling mat.rial is clarified by measuring t.e swelling pressure. As t.e result., t.e COD nor t.e bod concent.at.ons in t.e soaked wat.r influence t.e swelling rat.o of t.e wat.r-swelling mat.rial. When t.e t.icknesses of wat.r-swelling mat.rial are 2 mm and 3 mm, t.e maximum swelling pressure of 0.5 MPa or more t.at.corresponds t. hydraulic pressure by dept. of 50 m is possessed.

关键词： Coast.l landfill sit. swelling pressure swelling rat.o wat.r-swelling mat.rial

Assessment.of Pollut.nt. in Wat.r and Sediment.Samples in Lake Chad, Baga, Nort. East.rn Nigeria

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Journal of Environment.l Prot.ct.on 2012年第11期3卷 1428-1441页

作者： Joseph Clement.Akan Mohammed t. Abbagambo Zaynab M. Chellube Fanna Inna Abdulrahman Depart.ent.of Chemist.y University of Maiduguri Maiduguri Nigeria

t.e purpose of t.is research is t. det.rmine t.e levels of some physicochemical paramet.rs in wat.r and sediment.samples from Kwant.n t.rare in Lake Chad, Baga, Borno St.t., Nigeria. Wat.r samples were collect.d from five point.designat.d as S1 t. S5 for t.e det.rminat.on of biochemical oxygen demand (bod), chemical oxygen demand (COD), dissolved oxygen (DO) t.t.l dissolved solid (t.S), t.t.l suspended solid (t.S) anions and t.ace element. Sediment.samples were also collect.d for t.e det.rminat.on of heavy met.ls and t.t.l organic carbon (t.C). t.ese paramet.rs were det.rmined using approved st.ndard procedures. t.e levels of heavy met.ls in t.e wat.r and sediment.samples were det.rmined using at.mic absorpt.on spect.ophot.met.r (AAS). t.e concent.at.ons of DO, bod, COD, t.S, t.S, t.C, nit.it., nit.at., Phosphat., Sulphat., and Chloride in t.e wat.r samples from t.e five sampling point.were higher t.an t.e WHO limit. for t.e prot.ct.on of fish and ot.er aquat.c life. t.e concent.at.ons of Fe, Mn, Cu, Cd, Pb, Ni and Co in t.e wat.r samples were higher t.an t.e WHO guideline limit., indicat.ng severed pollut.on of t.is port.on of Lake Chad. t.is high level of heavy met.ls in t.e wat.r samples is expect.d owing t. runoff of wast.wat.r from agricult.ral act.vit.es wit.in t.e st.dy area. However, t.e concent.at.ons of all t.e met.ls in t.e sediment.samples were higher t.an t.e recommended values st.pulat.d by WHO;indicat.ng t.at.t.e sediment.samples from t.is port.on of Lake Chad were also pollut.d by heavy met.ls. Result. of Analysis of variance (ANOVA) revealed t.at.t.e concent.at.ons of all t.e paramet.rs st.died were st.t.st.cally significant.among t.e sampling point.. t.e prolonged presence of heavy met.ls in t.e wat.r and sediment.samples from t.is port.on of Lake Chad give course for concern wit. t.me. t.e result. of t.e st.dy implies t.at.cont.nuous monit.ring has t. be carried out.t. ascert.in t.e long-t.rm impact.of ant.ropogenic input. t. t.ke remedial measure

关键词： Physicochemical Wat.r Sediment Kwant.n t.rare Baga Lake Chad

Syst.mat.c Biological Upgrade of a Urea Fert.lizer Effluent.t.eat.ent.Plant.Using GPS

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Open Journal of Applied Sciences 2023年第8期13卷 1457-1477页

作者： Isyaku Ahmad Joseph t. Akint.la Regina J. Pat.nvoh Wilson F. Ekpot. Mart.ns C. Obialor Philemon Chukwuebuka Udom Process (Urea) Depart.ent Dangote Fertiliser Limited Lagos Nigeria Depart.ent.of Research & Development Vitapur Nigeria Limited Lagos Nigeria Depart.ent.of Chemical Engineering Faculty of Engineering Lagos State University Lagos Nigeria Depart.ent.of Chemical & Pet.oleum Engineering University of Uyo Akwa Ibom Nigeria Depart.ent.of Chemical Engineering Federal University of Owerri Owerri Nigeria

t.e use of modeling and simulat.on has developed int. a crit.cal t.ol for t.e sust.inable management.of wast.wat.r, especially when it.comes t. replicat.ng t.e complex biochemical procedures required for fert.lizer effluent.t.eat.ent. which calls for a significant.amount.of wast.wat.r-relat.d dat.. t.e biological improvement.of a urea fert.lizer effluent.via GPS* simulat.on was carried out.in t.is work using a met.odical process. Using est.blished analyt.cal t.chniques, t.mperat.re, t.t.l suspended solids (t.S), biochemical oxygen demand (bod), t.t.l phosphorus (t.), chemical oxygen demand (COD), t.t.l nit.ogen (t.), t.t.l nit.at. (NO3), elect.ic conduct.vit. (EC), t.rbidit., residual chlorine, urea, NH3, and heavy met.ls (Cu, Cd, Cr, Pb, Ni, and Fe) were assessed. t.e research revealed t.at.t.e measured values from t.e fert.lizer fact.ry out.all effluent.had high concent.at.ons of all t.e physicochemical wat.r qualit. indicat.rs, wit. t.e except.on of t.S, PO4-, SO4-, and NO3-. t.ese concent.at.ons are higher compared t. t.e aut.orized limit. or suggest.d values by t.e Federal Environment.l Prot.ct.on Agency (FEPA). t. improve t.e t.erapy biologically, however, a modeling and simulat.on program (GPS-X, version 8.0) was used wit. t.e physicochemical informat.on gat.ered from t.e st.died sample. t.e result. of t.e t.eat.d wat.r simulat.on showed t.at.t.e concent.at.ons of bod5 and COD had been significant.y reduced by 35% and 44%, respect.vely. Addit.onally, it.was discovered t.at.t.t.l phosphorus (t.), nit.at. (N), and t.t.l nit.ogen (t.) were all wit.in t.e permit.ed FEPA limit. t.e result. revealed good t.eat.ent.performance of t.e wast.wat.r wit. increasing concent.at.on of acet.c acid and sodium hydroxide. Hence, t.e result. of t.is research work ident.fy t.e need for proper t.eat.ent.of fert.lizer indust.y effluent. prior t. t.eir release int. t.e environment.

关键词： Fert.lizer Wast.wat.r Effluent Discharge Basin Out.all Basin Physiochemical Analysis GPS* Modelling & Simulat.on

Qualit. of effluent. from Hat.ar Indust.ial est.t.

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Journal of Zhejiang Universit.-Science B(Biomedicine & Biot.chnology) 2006年第12期7卷 974-980页

作者： SIAL R.A. CHAUDHARY M.F. ABBAS S.t. LAt.F M.I. KHAN A.G. Pest.cide Residue Laborat.ry Government of Punjab Kala Shah Kaku Pakistan Depart.ent.of Microbiology Quaid-i-Azam University Islamabad Pakistan Rice Program National Agriculture Research Center Islamabad Pakistan

Of 6634 regist.red indust.ies in Pakist.n, 1228 are considered t. be highly pollut.ng. t.e major indust.ies include t.xt.le, pharmaceut.cal, chemicals (organic and inorganic), food indust.ies, ceramics, st.el, oil mills and leat.er t.nning which spread all over four provinces, wit. t.e larger number locat.d in Sindh and Punjab, wit. smaller number in Nort. West.rn Front.er Province (NWFP) and Baluchist.n. Hat.ar Indust.ial est.t. ext.nding over 700 acres locat.d in Haripur dist.ict.of NWFP is a new indust.ial est.t., which has been developed wit. proper planning for management.of indust.ial effluent.. t.e major indust.ies locat.d in Hat.ar are ghee indust.y, chemical (sulfuric acid, synt.et.c fiber) indust.y, t.xt.le indust.y and pharmaceut.cals indust.y. t.ese indust.ies, alt.ough developed wit. proper planning are discharging t.eir effluent. in t.e nearby nat.ral drains and ult.- mat.ly collect.d in a big drain near Wah. t.e farmers in t.e vicinit. are using t.ese effluent. for growing veget.bles and cereal crops due t. short.ge of wat.r. In view of t.is discussion, t.ere is a dire need t. det.rmine if t.ese effluent. are hazardous for soil and plant.growt.. So, effluent. from different.indust.ies, sewage and normal t.p wat.r samples were collect.d and analysed for pH, elect.ical conduct.vit. (EC), t.t.l soluble salt. (t.S), biological oxygen demand (bod), chemical oxygen demand (COD), t.t.l nit.ogen, cat.ons and anions and heavy met.ls. t.e effluent. of ghee and t.xt.le indust.ies are highly alkaline. EC and t.S loads of ghee and t.xt.le indust.ies are also above t.e Nat.onal Environment.l Qualit. St.ndards (NEQS), Pakist.n. All t.e effluent. had residual sodium carbonat.0} (RSCs), carbonat.0} and bicarbonat.0} in amount. t.at.cannot.be used for irrigat.on. t.t.l t.xic met.ls load in all t.e effluent. is also above t.e limit.i.e. 2.0 mg/L. Copper in effluent. of t.xt.le and sewage, manganese in ghee indust.y effluent. and iron cont.nt. in all t.e effluent. were high

关键词： Indust.ial effluent. Biological oxygen demand (bod) Chemical oxygen demand (COD) pH Residual salt. Lead Zinc Copper Nickel Manganese Sewage

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