无机高分子铝盐絮凝剂的研究进展

对近年来无机高分子复合铝盐絮凝剂的研究进展及其在水处理中的应用进行了综合评述，并对今后无机高分子复合铝盐絮凝剂的发展方向提出了建议。     

处理电镀废液的新型絮凝剂的研究

为了降低电镀废液的处理成本，改善出水水质，论文对用于电镀废液处理的无机高分子絮凝剂PAFSC进行了研制，并研究了其对电镀废液的处理效果，从絮凝性能和经济方面与传统铝盐，铁盐进行了比较。结果表明，与传统的铝盐、铁盐絮凝剂相比，经PAFSC处理后的出水水质有明显的改善，而且用药量少，而价格明显低于传统铝盐和铁盐。     

无机高分子絮凝剂的开发和研究进展

无机高分子絮凝剂的研制与应用已成为环境科学和化学工作者的热门课题。本文将迄今已开发出的无机高分子絮凝剂，按聚铝、聚铁、复合型、聚硅酸金属盐四大类，分别介绍了他们的制备方法及用途。对其基础理论研究进展情况，作了简要概述，并提出了今后的研究课题。     

无机高分子铝铁复合絮凝剂性能试验研究：对煤矿矿井废水的处理

选用无机高分子铝铁复合絮凝剂进行煤矿矿井水处理试验研究。研究结果表明：先机高分子铝铁复合絮凝剂用于处理煤矿废水具有投药量少，污泥量少，费用低，效率高，工艺简单等优点，与单纯的铝盐和铁盐絮凝剂相比，具有更好的经济效益及技术可行性，值得进一步研究和大力推广。     

聚合铁类絮剂絮凝作用机理作用

聚合铁类絮凝剂是目前水处理中最发展和应用前景的无机高分子絮凝剂，论文探索，讨论和评述了聚合铁类絮凝剂的絮凝作用机理，并对其研究方向、应用前景进行了展望。     

无机和有机复合高分子絮凝剂的现状和发展方向

概括地叙述了国内外无机和有机高分子复合絮凝剂的现状,简单地介绍了文献所报道的多种新型无机和有机高分子絮凝剂合成方法、原料及其在水处理中的应用。在此基础上,文章最后指出了高分子复合絮凝剂的发展方向。     

微生物絮凝剂净化废水实验研究

采用微生物絮凝剂（ＭＢＦ）对于多种康２进行了净２化实验研究，结果表明，从活性污泥中分离出的Ｑ３－２菌株，由其产生的絮凝剂较曲霉产生的絮凝剂有更好的净化效果，最高絮凝率可达到９９．５％。将传统的无机絮凝剂碱式氯化铝与微生物絮凝剂配合使用不仅可以降低絮凝剂的总投加量，而且还可减少污泥量及污泥中铝残留量，这有利于絮凝后废渣的综合利用。     

新型无机高分子絮凝剂的研制与应用

聚合铝铁是一种新型无机高分子复合型絮凝剂.文章论述了这种絮凝剂制备原理、生产工艺流程、主要成份和参数,并采用此种药剂对造纸废水进行试验研究,获得了明显的处理效果.     

煤矸石基无机高分子絮凝剂的研究进展

本文从制备原理，絮凝机理两方面对煤矸石基无机高分子絮凝剂进行了叙述了，并对其絮凝性能进行了评价。     

微生物絮凝剂的制备与发展方向

文章对无机絮凝剂、有机合成高分子絮凝剂和微生物絮凝剂三种絮凝剂进行了比较,提出研究和开发絮凝效果好、应用范围广、易生物降解、对环境安全的微生物絮凝剂就成为必然,并综述了微生物絮凝剂其产生菌的筛选、鉴定、培养、微生物絮凝剂的提取和纯化、微生物絮凝剂的化学组成分析和合成途径的探索;列举了微生物絮凝剂对畜产废水有机物的去除、对废水中COD、BOD的去除、对印染废水脱色的应用、对工业废水重金属离子的脱除,最后,展望了微生物絮凝剂的研究发展方向。     

纳滤膜深度处理自来水中有害物质的研究

采肜纳滤膜对某市自来水进行深度处理试验，结果表明：ＮＦ能有效地去除ＮＨ３－Ｎ、有机物，致突变物，无机离子等杂质。     

磁性树脂对地下水中硝酸盐的去除效能及影响因素

利用小试实验研究了磁性离子交换树脂对水中硝酸盐的去除效能,并探讨了地下水中常见有机物及无机离子对其去除效能的影响.结果表明,磁性离子交换树脂对纯水中20mg/L的NO3--N的交换容量为55.91mg/mL,且去除速率较快,10min基本达到去除平衡;地下水中的腐殖酸类有机物对NO3--N的去除基本没有影响,而常见阴离子具有较明显的影响,其影响程度为SO42->CO32->Cl->HCO3-;针对徐州某水厂地下水的去除研究表明,通水倍数为500BV时磁性离子交换树脂对地下水中NO3--N的去除率约为50%左右.综上,磁性离子交换树脂可以作为去除地下水中的硝酸盐一种处理技术.     

饮用水中的消毒副产物及其控制策略

消毒副产物（disinfection by-products,DBPs）是在饮用水消毒时由消毒剂与有机或无机前体物反应生成的一类次生污染物,其由于具有致癌、致畸和致突变的三致特性在全球范围内广受关注.聚焦于饮用水中的DBPs,介绍了DBPs的主要分类和研究历程,汇总了多地饮用水中常见DBPs的浓度水平以及全球饮用水水质标准对DBP指标的管控要求.随后系统介绍了饮用水中DBPs的控制策略,包括源头控制、过程控制、末端控制以及协同控制这4大类,并对各类控制方法的优缺点进行了分析.评述了中国的DBPs研究的现有水平和未来趋势,并展望了未来有关DBPs控制方法的研究方向.一方面,在评价某种工艺或技术对DBPs的控制效果时需要考虑DBPs浓度和水质综合毒性的变化,另一方面,建议关注耦合源头、过程和末端控制技术的协同控制方法,兼顾从源头到龙头每个节点,实现对饮用水中各类DBPs的高效控制.     

环境矿物材料在水体污染治理进展中的研究

环境矿物材料在水体污染治理中的应用受到了人们的广泛关注.本文综述了环境矿物材料的改性方法,主要介绍了物理改性,主要有水热改性和焙烧改性,化学改性主要有无机改性和有机改性,探讨了在水体污染治理中的应用研究现状,主要包括去除重金属离子、去除有机污染物、去除无机阴离子和去除其他污染物,给出了环境矿物材料的发展趋势,主要包括加强环境矿物材料的研究、加强改性方法的研究和拓展与其他方法的联用等方面的应用研究.     

离子色谱法测定水中无机阴离子水样的预处理

本文介绍了用离子色谱法测定无机阴离子，对污染严重的水样通常采用预处理柱法。论述了预处理柱的制备、再生，测定了预处理柱对重金属及有机物的去除率及无机阴离子的回收率。     

我国饮用水水源内分泌干扰物的污染现状分析

我国作为饮用水水源的天然水体和部分饮用水水源地已受到内分泌干扰物的严重影响.文章分别从重金属类和有机类污染两个方面分析了我国饮用水源内分泌干扰物的污染现状,针对我国开展内分泌干扰物研究中存在的问题给出了建议对策并做出了展望.目前,我国七大水系以及华北、东南沿海地区的部分饮用水水源地都不同程度的受到了阿特拉津等有机氯农药...     

Utilization of plant-based natural coagulants as future alternatives towards sustainable water clarification

Rapid industrial developments coupled with surging population growth have complicated issues dealing with water scarcity as the quest for clean and sanitized water intensifies globally. Existing flesh water supplies could be contaminated with organic, inorganic and biological matters that have potential harm to the society. Turbidity in general is a measure of water cloudiness induced by such colloidal and suspended matters and is also one of the major criteria in raw water monitoring to meet the stipulated water quality guidelines. Turbidity reduction is often accomplished using chemical coagulants such as alum. The use of alum is widely associated with potential development of health issues and generation of voluminous sludge. Natural coagulants that are available in abundance can certainly be considered in addressing the drawbacks associated with the use of chemical coagulants. Twenty one types of plant-based natural coagulants categorized as fruit waste and others are identified and presented collectively with their research summary in this review. The barriers and prospects of commercialization of natural coagulants in near future are also discussed.     

Nitrogen sink in a small forested watershed of subtropical China

Global nitrogen (N) emission and deposition have been increased rapidly due to massive mobilization of N which may have longreaching impacts on ecosystems. Many agricultural and forest ecosystems have been identified as secondary N sources. In the present study, the input-output budget of inorganic N in a small forested watershed of subtropical China was investigated. Inorganic N wet deposition and discharge by stream water were monitored from March, 2007 to February, 2009. The concentrations and fluxes of inorganic N in wet precipitation and stream water and net retention of N were calculated. Global N input by dry deposition and biological fixation and N output by denitrification for forested watersheds elsewhere were reported as references to evaluate whether the studied forested watershed is a source or a sink for N. The results show that the inorganic N output by the stream water is mainly caused by NO3??-N even though the input is dominated by NH4 +-N. The mean flux of inorganic N input by wet precipitation and output by stream water is 1.672 and 0.537 g N/(m2 yr), respectively, which indicates that most of inorganic N input is retained in the forested watershed. Net retention of inorganic N reaches 1.135 g N/(m2 yr) considering wet precipitation as the main input and stream water as the main output. If N input by dry deposition and biological fixation and output by denitrification are taken into account, this subtropical forested watershed currently acts as a considerable sink for N, with a net sink ranging from 1.309 to 1.913 g N/(m2 yr) which may enhance carbon sequestration of the terrestrial ecosystem.     

光催化氧化处理水中有机污染物

光化催化氧化，是近２０年来的处理水中有机污染物方面发展起来的新方法。虽然该方法仍处于实验室试验阶段，但由于该法氧化能力强，可将有机物降解为无机物，没有或大为减少二次污染，因而在水污染防治中日益显示出广阔的前景。本文在国内外文献的基础上，简要介绍了光催化氧化法处理有机污染物研究进展，机理等概况。     

Study on the simultaneous reduction of methylmercury by SnCl2 when analyzing inorganic Hg in aqueous samples

Mercury (Hg) is among the most concerned contaminants in the world. It has three major chemical forms in the environment, including Hg⁰, Hg^2 +, and methylmercury (MeHg). Due to their differences in toxicity, mobility, and bioavailability, speciation analysis is critical for understanding Hg cycling and fate in the environment. SnCl₂ reduction-atomic fluorescence spectrometry detection is the most commonly used method for analyzing inorganic Hg. However, it should be noted that MeHg may also be reduced by SnCl₂, which would result in the overestimation of inorganic Hg. In this study, the reduction of MeHg by SnCl₂ in both de-ionized (DI) water and four natural waters was investigated. The results showed that MeHg could be reduced by SnCl₂ in DI water whereas this reaction was hard to occur in tested natural waters. By investigating the effects of water chemical characteristics (dissolved organic matter, pH and common anions and cations) on this reaction, SO₄^2 ? was identified to be the dominant factor prohibiting SnCl₂ induced MeHg reduction in natural waters. SO₄^2 ? in natural waters was evidenced to be reduced to S^2 ? by SnCl₂ and the generated S^2 ? can complex with MeHg to form MeHgS^? which is hard to be reduced by SnCl₂. Findings of this study indicate that the effect of MeHg reduction by SnCl₂ on inorganic Hg analysis is negligible in natural waters; however, at simulated experimental systems without SO₄^2 ?, SO₄^2 ? should be added as protecting agents to prevent MeHg reduction when analyzing inorganic Hg if it would not cause any other unwanted effects.