瓷珠曝气生物滤池去除源水中氨氮研究

采用以瓷珠为填料的曝气生物滤池(BAF)预处理某高氨氮源水,结果表明,在气水比为1∶1、滤速为5. 5m/h、水温>10℃的条件下,当进水氨氮<5mg/L时BAF对氨氮的去除率为70% ~90%,反应器中存在一定的亚硝酸氮积累;反冲洗周期对氨氮的去除率有较大影响。     

预氯胺化控制消毒副产物技术研究

把氯胺作为一种预氧化剂,研究了预氯胺化工艺中消毒副产物的生成及变化规律.经研究发现,原水中含有一定浓度的氨氮可以有效地降低总三卤甲烷(TTHMs)的生成.TTHMs随着氯胺量的增加而略有增加;预氯胺化反应48 h后TTHMs不再明显增加;随着pH值的升高,TTHMs(主要是溴代三卤甲烷)明显减少;随着氯氮比的增加,溴代三卤甲烷生成量明显升高,经分析认为可能是pH值和氯氮比对溴离子(Br-)与氯胺的卤代反应影响较为复杂造成的.     

生物活性炭滤池处理微污染原水的效能

针对水源受氨氮污染的情况,进行了生物活性炭滤池与普通石英砂滤池的生产性对比试验,结果表明：在水温＞10℃、进水氨氮＞0.8 mg/L的情况下,生物活性炭滤池对CODMn、氨氮的去除率比普通石英砂滤池的高,而且具有很好的抗氨氮冲击负荷能力,但冬季低温对处理效果有较大的影响.     

Urine separation as part of a real-time control strategy

Considering wastewater from household sources, urine accounts for approximately 80% of the ammonia loads but for only 1% of the hydraulic load. Where classical urine separation deals with the separation and subsequent removal of urine from the wastewater stream, the method promoted here (urine separation for waste design) aims to (1) separate urine from the wastewater stream, (2) store it at the household and (3) release it in a controlled manner into the drainage system. The ultimate goal is on the one hand to average the daily dynamics in the ammonia load to the wastewater treatment plant (WWTP) and on the other hand to reduce ammonia emissions towards receiving waters. All process steps from urine production, separation, harvesting and controlled release of urine have been modelled on a micro-level where all toilets in the system are balanced separately. As a case study the integrated urban drainage system of Vils/Reutte in Tyrol was used where a total of 11 different control strategies – ranging from simple to highly complex real-time control (RTC) applications – have been developed and tested. The evaluation (taking into account both aims as expressed above) showed that the simplest RTC applications are the most effective. The optimal performance achieved in the case study resulted in an ammonia reduction of 62% (load based) compared to the status quo. As such a method would require considerable systems changes, an incremental implementation of associated improvements were also tested in this work. An important outcome was that a large proportion of the final improvement is gained already with the first 25% of installed separation toilets.     

生物膜电极工艺去除微污染源水中氨氮的研究

采用生物膜电极工艺去除微污染源水中的氨氮.在好氧区利用金属阳极电解产氧,在硝化细菌的作用下使氨氮转化为硝酸盐氮或亚硝酸盐氮;在缺氧区利用碳棒作为阴极电解产氢,实现反硝化脱氮.试验结果表明:C/N、电流强度、氨氮浓度、进水流量等对去除总氮均有影响;在流量为3 L/d、无外界供氧、电流强度为19.5 mA、C/N为1的条件下,当进水COD为10 mg/L、氨氮为7 mg/L时,对总氮的去除率可达95.6%,显著改善了水质.     

混凝土防冻剂释放氨及尿素含量现场测试方法研究

分别采用试验室蒸馏滴定法和现场快速测试方法(纳氏试剂法)对10种不同混凝土防冻剂中所含氨含量进行检测。比较每种防冻剂的检测结果发现,现场快速测试方法测得防冻剂中氨含量与试验室蒸馏滴定法所得结果相近,并且同一防冻剂其两次不同的测量结果波动性较小,说明现场快速检测法可以快速、准确并且稳定的测定防冻剂中释放氨的含量,对于现场的施工过程中氨的预防具有重要意义,同时发现试验室蒸馏滴定法测定不出混凝土防冻剂中的人为添加的尿素含量,而现场快速测试方法(二氯异氰脲酸钠-麝香草酚法)能检测出混凝土防冻剂尿素含量。     

颗粒污泥+好氧污泥处理焦化废水中氨氮的研究

采用好氧污泥协同微氧颗粒污泥技术对焦化废水中的氨氮进行处理,研究了其去除效果及影响因素,结果表明,微氧颗粒污泥+好氧污泥工艺对焦化废水中的氨氮有很好的去除效果,去除率可达80%以上;好氧阶段曝气时间和pH值对氨氮去除效果的影响较大,而整个系统运行稳定后停止运行1个月,对氨氮的去除效果无明显影响。     

关于氨—盐水冻结系统的探讨

在充分了解氨—盐水冻结系统基础上,对整套制冷系统的热传递进行了分析,从节能的角度进行了研究,同时又论述整个系统中存在的问题,力求引起施工者的高度注意和改进,以达到节能安全的效果。     

燃煤电厂烟气脱硝系统液氨气化器控制方式

论述了燃煤电厂烟气脱硝对于环境保护的重要性和必要性,在燃煤电厂烟气脱硝系统的选择性催化还原法（SCR）中最常用的设备蒸汽水浴式液氨气化器的控制要点及控制方式。     

氨水低压低温的传热传质研究

对氨水溶液解析—压缩制冷循环的氨水低压发生部分进行实验研究,并对该发生过程的多次实验过程进行了对比和分析,结果表明：饱和氨水在低压环境中能够在套丝网管中形成升膜解析出氨气并能释放出比氨气潜热大得多的冷量,通过实验发现通过节流阀单级节流作用和大温差换热的等温降压发生会得到与理论上相近的制冷效果。