石家庄市西北湿地公园对生活污水的处理效果研究

通过2016年1月—10月份对比监测西北湿地公园人工湿地系统中进、出水的主要水质指标,化学需氧量(COD)、氨氮、总磷(P)、总氮,结果表明该人工湿地对生活污水有很好的净化作用。其中,COD、氨氮、总磷、总氮的平均去除效率分别达到了64.75%、63.62%、86.8%、74.54%,表明人工湿地系统对污水的净化起到了很好的作用。说明利用人工湿地系统去除城市生活污水中的污染物的可行性,处理方法符合目前水环境生态保护要求。     

金华城市污水SBR处理工艺

应用序批式活性污泥法(SBR工艺)处理中、小规模城市生活污水，确定了主反应池运行周期以及运行技术参数；全程采用PLC自动控制，不设调节池，投资省，具有耐冲击负荷、运行费用低、效果好等特点；COD去除率这85％以上，BOD5、氨氮去除率这80％以上，处理后出水达到地表水Ⅳ类标准，是比较理想的城市污水处理方法。     

MBR工艺处理模拟城市生活污水的试验研究

采用膜生物反应器(MBR)工艺对模拟生活污水进行分析研究,试验结果表明,MBR系统对生活污水中的COD,NH4-N有较高的去除率,大大的提高了出水的水质.MBR对COD、NH4-N、TP的平均去除率分别达到了77.60%、80.85%、72.63%.     

膜生物反应器处理生活污水相关机理研究

膜生物反应器 (MBR)是一种新的污水处理技术 ,为水工业领域广泛关注 .为了获得 MBR处理生活污水的工艺参数 ,采用实验室规模的反应器对其进行了研究 .实验结果表明 ,当用于生活污水处理时 ,这种工艺可以高效降解水中的污染物 ,出水具有很低的 COD、浊度和细菌总数 .通过采用间歇运转、连续曝气 ,膜通量可保持稳定 .还讨论了膜对 COD的去除机理、膜的结构和过滤阻力 .     

SBR工艺处理生活污水的实验研究

以生活污水为研究对象,利用序批式活性污泥法对其进行生化处理,并对最佳工艺条件进行了研究.在温度20～25℃、进气量为50 L/h、反应时间为1 h、沉淀时间为0.5 h、闲置时间为1 h的条件下,对COD,TN去除率分别达到90%和85%,COD为200～700 mg/L、TP为3～8 mg/L、TN为40～110 mg/L的废水进行处理.出水水质达到<城镇污水处理厂污染物排放标准>(GB18918-2002)一级A标准.TP去除率达78%,出水达该标准一级B标准.     

厌氧-复合人工湿地工艺处理农村生活污水研究

针对农村生活污水的水质特点,采用厌氧-复合人工湿地组合工艺处理农村生活污水,结果表明,厌氧池对SS的去除率为80.6%;复合人工湿地对COD、TN的去除率分别为61%和61.4%,对TP的去除率在57%～66%之间。     

水解酸化-厌氧-好氧工艺处理罐头食品加工废水

罐头食品生产废水是易降解高浓度有机废水,根据废水的水质特点,采用水解酸化-厌氧-好氧法多级流程联合处理。运行结果表明,该工艺处理效果良好,工艺运行稳定,系统总COD去除率达95.6%;BOD5总去除率达98.6%;SS总去除率为93.3%;色度平均总去除率为94.6%。出水各项指标均优于《污水综合排放标准》(GB8978—1996)中二级标准的要求。     

BAF工艺用于炼油废水的深度处理

以某石化企业炼油废水生化出水为处理对象,采用BAF 陶粒粒料过滤组合工艺深度处理废水,使之达到废水回用目的。试验结果表明:该组合工艺对COD总去除率为51％,氨氮去除率32．93％,石油类去除率74．69％,最终出水水质ρCOD <50mg/l、ρ氨氮<10mg/l、ρ石油类<3 mg/l,达到车间杂用水水质要求。     

人工湿地处理农村分散性生活污水的效能研究

利用一个自行构建的小型示范性人工湿地,考察其对分散性生活污水的处理效能,以便为水量少、波动大、污水成分相对简单的分散性污水处理提供一条经济有效的途径．结果表明：湿地系统植物移栽20天后恢复良好,栽植培育1个月后即可连续满负荷进水．稳定运行后,水力停留时间为48h,人工湿地对COD、氨氮和总磷的平均去除率分别超过80％、55％和55％,出水可达标排放．结果表明,对于分散性生活污水,可采用人工湿地的方法对其进行处理,以弥补分散性生活不便收集、多数直接排入地表水体,一些地区污水处理率较低的问题．     

粉煤灰类陶粒在A/O接触氧化工艺中的应用

采用粉煤灰制成的陶粒在A/O接触氧化工艺中处理校园生活污水,考察了该工艺对COD、NH_4~+-N、TP的降解效果.本研究中A/O工艺装置采用连续进水,以陶粒为填料,对其进行挂膜,结果表明:当温度为20.5~28.5℃,pH值为6.7~7.8,进水流量为180~200 L/h时,HRT为9.6~10.6 h,DO浓度大于2 mg/L以及进水COD、NH_4~+-N、TP分别为85.20~139.90 mg/L、13.81~22.11 mg/L、1.32~4.52 mg/L时,陶粒挂膜性能好,系统启动速度快,稳定运行对COD、NH_4~+-N和TP的去除率分别可达93.83%、90.42%和72.65%,出水COD、NH_4~+-N浓度能满足《城镇污水处理厂污染物排放标准》(GB18918-2002)的一级A标准,TP能够满足二级标准.以粉煤灰制成的陶粒在A/O接触氧化工艺中的应用达到较好的脱氮和碳氧化的效果、出水水质稳定、生物膜稳定性强等优点.该研究为生活人口较多的校园及地区独立建设污水处理设施提供了工艺和数据支持.     

用改进的序批式生物膜反应器技术处理废水

This paper describes the removel of COD and nitrogen from wastewater with modified sequencing batch biofilm reactor,The strategy of simultaneous feeding and draining was explored.The results show that introduction of a new batch of wastewater and withdrawal of the purifeid water can be conducted simultaneously with the maximum volumetric exchange rate of about 70%,Application of this feeding and draining mode leads to the reduction of the cycle time,the increase of the utilization of the reactor volume and the simplification of the reactor structure.The treatment of a synthetic wastewater containing COD and nitrogen was investigated.The operation mode of F(D)-O(i.e.,simultaneous feeding and draining followed by the aerobic condition)was adopted.It was found that COD was degraded very fast in the initial reaction period of time,then reduced slowly and the ammonia nitrogen and nitrate nitrogen concentrations decreased and increased with time respectively,while the nitrite nitrogen level increased first and then reduced.The relationship between the COD or ammonia nitrogen loading and its removal rate was examined,and the removal of COD,ammonia nitrogen and total nitrogen could exceed 95%,90%and 80% respectively,The fact that nitrogen could e removed more completely under constant aeration(aerobic condition)of the SBBR operation mode is very interesting and could be explained in several respects.     

石灰预处理在制革废水处理中的应用

采用石灰预处理法对皮革废水进行处理,研究了石灰添加量对灰皮水及蓝皮水COD值和氨氮含量的影响,结果表明：石灰预处理灰皮水可大幅度降低水体的COD值和氨氮含量,其原理应为可溶性蛋白质在等电点下沉淀,氨氮以氨气的形式挥发．     

Treating Opaque Beer Wastewater Using a Novel Internal Circulation Membrane Bioreactor

An innovative internal circulation membrane bioreactor(ICMBR) treating traditional opaque beer brewery wastewater was introduced. Beer wastewater from Tianjin Huarun Brewhouse was taken as the influent. The removal efficiency of suspended solid, chemical oxygen demand, total nitrogen and ammonia nitrogen were studied with the changeable hard real time design method, organic loading rate and nutrition elements. The average percentage reduction in chemical oxygen demand achieved 90%. The total nitrogen and ammonia nitrogen were also reduced by 90% and 95%, respectively. The results indicate that the outlet of ICMBR meets the requirements of the environment landscape recycling use.     

电解法去除高浓度氨氮废水工艺研究

本文采用电解技术对高浓度氨氮废水进行处理研究,考察电化学方法对废水中高浓度氨氮的去除效果,并优化其工艺参数。结果表明,电流密度、Cl^-1浓度、极板对数等均对高浓度氨氮的电解处理效率有直接影响;综合考虑电耗、投加Cl^-1量等经济因素和处理效果,其优化工艺参数为8A电流、NH4^＋与Cl^-1的摩尔比为1：4、2对极板;此条件下氨氮的90m in去除率为81.5%,电耗为63.6度。     

Contaminations removal from static lake water by compound

Urban wastewater treatment techniques could not be applied to improve the pollutant removal efficiency,due to its characteristics of closed and quiescent conditions of the static lake water.In this study,natural zeolite and coal cinder were chosen as filler compounds of the ecological filter.Static and dynamic experiments were carried out to study the remediation efficiency.Experimental data show that removal efficiency of ammonia nitrogen （NH ＋ 4 -N） reaches 85% in both static and dynamic patterns and its removal efficiency reaches 97% when the recycling period is 1 h in dynamic condition.The maximum removal efficiency of nitrite nitrogen （NO-2 -N） reached 98%,and the removal efficiency of total nitrogen （TN） is a maximum of 84%.The final effluent concentration of total phosphorus （TP） is 0.079 mg/L.Effluent recycling could improve the nutrient （N,P） removal efficiently.Dissolved oxygen （DO） concentration could remain high with the water cycling.The filter works efficiently on regulating pH to the standard level of healthy water.     

改性粉煤灰对焦化废水深度处理的实验研究

采用高温和酸分别对粉煤灰进行改性,对比了改性后的粉煤灰对焦化废水深度处理的效果,确定了最佳工艺条件。结果表明,焦化废水COD135~170mg/L,NH3-N 96~135mg/L,体积150mL,pH值5,改性粉煤灰投加量25g,粒径100~160目,吸附时间60min,石灰量0.25g,高温改性粉煤灰对焦化废水COD和氨氮的去除率分别达到了85.2%和89.6%,而酸改性粉煤灰对焦化废水COD和氨氮的去除效果劣于高温改性粉煤灰,去除率分别为78.3%和82.7%。     

广州市城市污水水质特性及处理对策的研究

广州市城市污水属于典型的南方城市污水,污染物浓度不高.2000～2004五年间的监测结果表明：BOD5在30～200mg/L之间,COD在70～300mg/L之间,氨氮在10～40mg/L之间,总氮在10～40mg/L之间,总磷在1.5～5mg/L之间;可生化性较好,可生化性指数在0.35～0.75之间;生物脱氮除磷的潜力较大,其碳氮比和碳磷比的变化范围分别是：2～5以及20～60之间.     

自制聚合硫酸铁处理高色度印染废水的实验研究

利用自制聚合硫酸铁处理高色度印染废水，研究了最佳实验条件。该方法工艺简单，药剂成本低，废水的COD去除率达70％以上，脱色率达98％以上，出水水质达到了国家印染废水排放二级标准。     

Catalytic ozonation-biological coupled processes for the treatment of industrial wastewater containing refractory chlorinated nitroaromatic compounds

A treatability study of industrial wastewater containing chlorinated nitroaromatic compounds (CNACs) by a catalytic ozonation process (COP) with a modified Mn/Co ceramic catalyst and an aerobic sequencing batch reactor (SBR) was investigated.A preliminary attempt to treat the diluted wastewater with a single SBR resulted in ineffective removal of the color,ammonia,total organic carbon (TOC) and chemical oxygen demand (COD).Next,COP was applied as a pretreatment in order to obtain a bio-compatible wastewater for SBR treatment in a second step.The effectiveness of the COP pretreatment was assessed by evaluating wastewater biodegradability enhancement (the ratio of biology oxygen demand after 5 d (BOD5) to COD),as well as monitoring the evolution of TOC,carbon oxidation state (COS),average oxidation state (AOS),color,and major pollutant concentrations with reaction time.In the COP,the catalyst preserved its catalytic properties even after 70 reuse cycles,exhibiting good durability and stability.The performance of SBR to treat COP effluent was also examined.At an organic loading rate of 2.0 kg COD/(m3·d),with hydraulic retention time (HRT)=10 h and temperature (30±2) °C,the average removal efficiencies of NH3-N,COD,BOD5,TOC,and color in a coupled COP/SBR process were about 80%,95.8%,93.8%,97.6% and 99.3%,respectively,with average effluent concentrations of 10 mg/L,128 mg/L,27.5 mg/L,25.0 mg/L,and 20 multiples,respectively,which were all consistent with the national standards for secondary discharge of industrial wastewater into a public sewerage system (GB 8978-1996).The results indicated that the coupling of COP with a biological process was proved to be a technically and economically effective method for treating industrial wastewater containing recalcitrant CNACs.     

汤河水体污染特征及分析

为了解汤河水体中污染物的变化特征,选取7个代表性取样点分季节进行2次水体采样,测定pH、氨氮、总氮、总磷及COD,并分析其成因.研究结果表明汤河水体pH整体上2月份较7月份略高,除取样点1、2外,其他各点2月份氨氮、总氮、总磷和COD都较7月份高. 可见,7月份汤河水质明显优于2月份,其原因可能与7月份水生植物生长旺盛,植物吸收了水体中的氮、磷等污染物,以及2月份水中植被死亡有机物的释放有关.此外,从汤河上游到下游水体污染物浓度呈现出明显上升的趋势,但不同取样点水体污染物浓度变化较大,氨氮、 总氮、 总磷及COD浓度变化幅度依次为0.052-0.32 mg/L 、0.075-0.41 mg/L、0.014-0.419 mg/L和11-31.7 mg/L,导致这种现象的原因可能与取样点周边城镇、农村生活污水、农业和工业废水的无序排放有关.