炼油污水深度处理回用工艺中阳离子树脂污染物脱除性能研究

实验考察了深度处理后的炼油污水用于锅炉时的性能状况,分析了污水化学需氧量(COD)、硬度对树脂吸附脱氨性能的影响。研究表明,在对炼油污水进行深度处理时,污水的COD、硬度严重影响树脂对氨、氮的吸附。树脂对硬度的吸附率高于对氨、氮的吸附率,稳态时树脂能使COD降低60%。树脂脱氨不适合于对炼油废水深度处理时作为脱氨的主要工艺,应置于深度处理的后段。氨、氮量及COD均被有效地降低后,再对水的硬度进行处理。     

MAP法与沸石吸附组合工艺的脱氮除磷实验研究

以高浓度氮磷模拟废水为处理对象,通过静态实验研究了MAP法（磷酸铵镁法）与沸石吸附组合工艺的脱氮除磷效果。以MAP法除磷脱氮后的出水作为沸石吸附过程的进水,最终出水的氮、磷去除率可达86．69％和99．9％,且在MAP反应过程中采取较高的pH值和Mg^2＋浓度有利于后期沸石对氮、磷的吸附去除。     

高效脱氮除磷中水处理技术

由南京中电联环保股份有限公司开发的高效脱氮除磷中水处理技术,主要用于工业给水处理、再生水软化处理。主要技术内容一、基本原理原水在生物接触反应器内,在微生物吸附和新陈代谢的作用下,去除部分有机物、氮、磷等污染因子,微生物保持微量繁殖。通过定期少量排泥或反洗,使部分老化的微生物排出系统,保持微生物一定的活性。     

LDO处理垃圾渗滤液中氮的实验研究

研究了复合金属氧化物（LDO）用于处理垃圾渗滤液中氮的可行性,并与传统吸附剂粉末活性炭（PAC）进行了比较,考察了投加量、振荡速度、吸附时间、吸附温度、pH等因素对处理效果的影响。结果表明,当垃圾渗滤液中总氮浓度为561mg/L、LDO投加量为6g/L、振荡速度为170r/min、吸附时间为60min、温度为25℃、pH值为11时,LDO对总氮的吸附量最高,达到41mg/g。在相同条件下,LDO对总氮的吸附量是PAC的2.5—3.5倍。     

转轮吸附VOCs技术的探讨

从吸附原理上对转轮技术进行了探讨分析,认为转轮技术虽然能吸附处理大量的VOCs,但其同样处理不了一些难以脱附的物质。文章对转轮技术的吸附能力给予了理论解释,澄清了"转轮能够大倍率浓缩废气、易做到达标排放、处理风量大"等错误认识;对转轮技术存在的缺陷进行了分析,提出活性炭固定床是治理VOCs污染更理想的选择。     

有机物生物吸附研究进展

生物吸附是有效处理难降解有机物的技术之一。本文从生物吸附的概念、生物吸附过程、吸附剂的制备及再生、生物吸附影响因素等方面进行了综述,同时阐述了生物吸附有机物的技术研究进展和应用前景展望。     

凝胶吸附除重技术及在城市污泥处理中的应用

凝胶吸附技术用于污泥中重金属去除较传统技术具有成本低、效率高的优势,介绍了凝胶吸附技术的原理、目前国内外相关研究进展情况、国内污泥处理重金属现状以及需要解决的技术问题;通过中试案例的运行效果分析,得出结论:凝胶吸附除重技术已经部分具备工业化应用的技术可行性。     

生物吸附剂及其吸附性能研究进展

用微生物体来吸附水中的重金属是一项新兴的废水生物处理技术。藻类、细菌、真菌等是生物吸附剂的来源 ,它们对多种重金属都有较好的吸附去除效果。文章从细胞壁的结构特性概述了藻类、细菌、真菌等对重金属吸附的机理 ,介绍了它们的吸附性能     

EM技术在污水处理中的应用

EM技术应用于污水生物处理具有广阔的发展前景。介绍了EM技术处理污水的机理,列举了EM对污水中有机物、氮和磷处理的应用实例,并对EM处理污水所存在的问题及今后的研究方向进行了分析。     

工业废水处理及回用技术

由山东恒利石油化工有限公司开发的工业废水处理及回用技术适用于炼化企业、大型化工企业和发电厂。主要技术内容一、基本原理根据工业企业达标外排污水水质特点进行吸附过滤处理,经吸附过滤处理后的污水回用于循环冷却水系统开发出高效杀菌剂、缓蚀阻垢剂、黏泥剥离剂及相应的     

ADSORPTION IN MULTICOMPONENT SOLUTION BY ACTIVATED CARBON

It was found that the total adsorptive capacity of activated carbon was enhanced by using a multicomponent solution with glucose, peptone and phenylphosphonic acid. A maximum use of the carbon adsorptive capacity is possible if the carbon is used for tertiary treatment followed by treating a stronger waste.     

含油污泥热解残渣吸附性能初探＊

含油污泥热解残渣的处理和应用是石油石化企业生产领域急需解决的难题。以含油污泥热解残渣为研究对象,在对其进行无害化处理的基础上,对热解残渣的吸附性能进行了探讨。通过能谱分析可知,热解残渣由碳和无机元素组成,碳元素含量达36.92%;通过SEM电镜扫描、比表面积和孔结构等吸附性质表征研究,含油污泥热解残渣吸附性能优良,对含油污水中的石油类和COD有较好的去除作用。研究结果表明:含油污泥热解残渣可作为一种吸附材料,这项研究为含油污泥热解残渣的资源化利用提供了一条途径。     

海泡石对亚甲基蓝的吸附性能

研究了一般海泡石、HCl改性海泡石对亚甲基蓝的吸附性能,以及在室温下的吸附动力学,计算了吸附速率常数,绘制了海泡石的吸附等温线,并求得其饱和吸附量.结果表明,室温下酸改性海泡石的吸附速率要快于一般海泡石,各类型海泡石的吸附行为符合 Langmuir 方程.     

吸附-双催化氧化降解苯胺、硝基苯废水

苯胺、硝基苯废水利用吸附树脂吸附后,再利用过氧化氢作氧化剂,在亚铁离子和紫外光的双催化下氧化降解。通过对亚铁离子浓度、过氧化氢浓度等因素对光降解影响的考察,结果表明,在实验条件下,本氧化体系对苯胺、硝基苯废水有明显的降解效果,苯胺、硝基苯废水经该体系处理12h后,去除率最高分别达到99.7%和95.3%。     

改性沸石对水体中硝酸盐的吸附机理及其残渣的资源化利用

利用HDTMA改性沸石制成吸附剂,研究对水体中硝酸盐的吸附能力和机理及吸附剂残渣的资源化应用前景。结果表明:HDTMA改性沸石可增强其对硝酸盐的吸附能力。通过红外光谱和差热分析它的吸附机理,表明:改性沸石HZ4吸附有十六烷基三甲基溴化铵(HDTMA)分子;吸附剂残渣NHZ4吸附有十六烷基三甲基溴化铵(HDTMA)分子和硝酸盐。盆栽实验结果表明:吸附剂残渣NHZ4能提高玉米生物量,最大增幅为30.4%。     

Color removal from dye-containing wastewater by magnesium chloride

Color removal by MgCl(2) when treating synthetic waste containing pure dyes was studied. The color removal efficiency of MgCl(2)/Ca(OH)(2) was compared with that of Al(2)(SO(4))(3), polyaluminum chloride (PAC) and FeSO(4)/Ca(OH)(2). The mechanism of color removal by MgCl(2) was also investigated. The experimental results show that the color removal efficiency of MgCl(2) is related to the type of dye and depends on the pH of the waste and the dosage of the coagulants used. Treatment of waste containing reactive dye or dispersed dye with MgCl(2) yielded an optimum color removal ratio when the pH of the solution was equal to or above 12.0. For both the reactive and dispersed dye waste, MgCl(2)/Ca(OH)(2) was shown to be superior to MgCl(2)/NaOH, Al(2)(SO(4))(3), PAC and FeSO(4)/Ca(OH)(2) for color removal. A magnesium hydroxide precipitate formed at pH values greater than 12.0, which provided a large adsorptive surface area and a positive electrostatic surface charge, enabling it to remove the dyes through charge neutralization and an adsorptive coagulating mechanism. So, the MgCl(2)/Ca(OH)(2) system is a viable alternative to some of the more conventional forms of chemical treatment, especially for treating actual textile waste with high natural pH.     

Rice husk ash as an effective adsorbent: evaluation of adsorptive characteristics for Indigo Carmine dye

Present study explored the adsorptive characteristics of Indigo Carmine (IC) dye from aqueous solution onto rice husk ash (RHA). Batch experiments were carried out to determine the influence of parameters like initial pH (pH(0)), contact time (t), adsorbent dose (m) and initial concentration (C(0)) on the removal of IC. The optimum conditions were found to be: pH(0)=5.4, t=8h and m=10.0 g/l. The pseudo-second-order kinetic model represented the adsorption kinetics of IC on to RHA. Equilibrium isotherms were analyzed by Freundlich, Langmuir, Temkin and Redlich-Peterson models using a non-linear regression technique. Adsorption of IC on RHA was favorably influenced by an increase in the temperature of the operation. The positive values of the change in entropy (DeltaS(0)) and heat of adsorption (DeltaH(0)); and the negative value of change in Gibbs free energy (DeltaG(0)) indicate feasible and spontaneous adsorption of IC on to RHA.     

低营养低温条件下双膜法水处理系统的改进

膜分离技术中的MBR与RO组合工艺具有出水水质好、占地面积小、便于自动控制、运行稳定等优点。但在运行过程中,膜会发生不同程度的污堵,如何减缓膜污染的发生及让系统稳定高效的运行是膜法水处理技术面临的主要问题。通过优化生化系统的菌群结构,提高生化出水水质,可有效减缓MBR膜污染的发生,从而使生化＋ MBR系统的整体运行效果大大增强;通过在MBR和RO之间增设汽水换热系统,可克服冬季低温对RO系统运行的影响,提高MBR ＋ RO组合工艺的产水率,节省运行能耗。     

气田水治理的初步研究

某些气田水溴含量高及COD高,本研究采用了曝气—混凝—氧化法降低COD以及离子交换法从气田水中直接制溴化钠的新工艺,并估算出了治理的成本与效益,为综合利用与治理气田水提供了一条经济的技术路线。     

Removal of phthalates from aqueous solution by different adsorbents: a short review

This work presents a short review of adsorptive materials proposed and tested for removing phthalates from an aqueous environment. The objective is not to present an exhaustive review of all the types of adsorbents used, but to focus on selected types of "innovative" materials. Examples include modified activated carbon, chitosan and its modifications, β-cyclodextrin, and specific types of biomass, such as activated sludge from a wastewater treatment plant, seaweed and microbial cultures. Data from the literature do not confirm the existence of a broad-spectral adsorbent with high sorption efficiency, low production costs and environmentally friendly manufacture. According to the coefficients of Freundlich's isotherm, the most promising adsorbent of those mentioned in this work appears to be the biomass of activated sludge, or extracellular polysaccharides extracted from it. This material benefits from steady production, is cheap and readily available. Nevertheless, before putting it in practice, the treatment and adaptation of this raw material has to be taken into consideration.