粘胶短纤维塑化浴废水回收的技术改进

在粘胶短纤维生产中，以往将塑化浴废水回收到酸浴循环系统中，进行重复使用，存在着经济效益差、操作难度大的问题。经过对塑化浴废水回收的技术改进，提高了塑化浴废水的回收效果，降低了回收成本。     

含氨工艺冷凝液和脱碳废水低压汽提回收工艺及应用

为确保总排污水在２０００年达标排放,对汽提装置相继进行两次改造,增设脱碳废水回收系统,将脱碳废水送往Ｃ９２０１汽提回收。实现了工艺冷凝液和脱碳废水中的水和氨的回收,并增加了热量的回收,经济效益显著。     

焦化蒸氨废水余热回收利用新技术开发与应用

针对传统焦化蒸氨废水工艺余热未全面回收利用的问题,设计开发了蒸氨废水余热回收利用新技术。通过蒸汽、热水两用型制冷、采暖双工况吸收式热泵机组,可夏季回收蒸氨废水余热制取热水,作为制冷机驱动热源制取工艺冷却水,满足煤气净化回收系统冷却需要,冬季回收蒸氨废水余热并辅以蒸汽为热源生产取暖水,实现了蒸氨废水余热的综合利用,降低了工序能耗,具有较好的经济效益和社会效益。     

膜分离技术在纺织工业废水处理中的应用

介绍了国内外十几年来膜分离技术处理纺织工业废水的概况，从洗毛废水处理，退浆废水回收ＰＶＡ，纤维油剂回收，三甘醇回收，印染废水治理等几个方面展示了膜分离技术在纺织工业中具有广阔的应用前景，兼收环境效益和经济效益。     

合成氨生产中的废水来源与回收利用

四川天华股份有限公司合成氨装置通过回收工艺冷凝液、二段炉夹套水和高压锅炉循环水泵轴承冷却水、二氧化碳冷凝液以及增设废水回收槽等措施,进行废水的回收利用,取得了较好的经济效益,并达到了保护环境竹目的。     

资源回收在我厂的应用

鲁南化肥厂采用吹风气锅炉等回收羰基化系统、净化系统尾气,以溴化锂机组回收高温废水热能,创造了较好的经济效益。     

硝酸铵废水处理的工艺与效益分析

硝酸铵冷凝液废水回收治理装备是一种去除硝酸铵废水中游离氨的中和调节处理装置,该硝酸铵冷凝废水治理、回收工程是一项具有社会效益、环境效益与较高经济效益的环境治理工程。     

鸟粪石法回收废水中磷的反应器研究现状

磷是日益枯竭的战略资源,同时又是造成水体富营养化的关键因素,所以从废水中回收并利用磷不但具有经济效益还具有环境效益。反应器是鸟粪石法回收磷的核心装置,国外在磷回收研究方面已研发了多种反应器,其中有些已用于实践中,并产生了很大的环境与经济效益。但在国内很少有关于磷回收反应器研究方面的详细报道。本文在阐述鸟粪石法回收废水磷原理的基础上,介绍了国内外从废水中回收磷所采用的反应器,包括机械搅拌和空气搅拌的搅拌式反应器,以及气体搅动式和液体搅动式的流化床式反应器,着重介绍各种反应器的结构流程以及研究现状。     

渗透汽化-精馏耦合工艺回收水中二甲基甲酰胺的方法

本发明涉及利用渗透汽化-精馏耦合工艺从废水中回收二甲基甲酰胺的方法,属于二甲基甲酰胺的分离纯化技术领域。针对传统蒸馏法回收废水中二甲基甲酰胺(DMF)、特别是DMF浓度较低时存在能耗大、经济效益低的缺点,本发明公开了一种回收废水中二甲基甲酰胺的方法,该方法主要包括渗透汽化和精馏两个主要工序,料液     

开磷剑化回收氨氮废水增效益

开磷集团剑化公司坚持挖潜降耗工作不停步,仅氨氮废水回收项目每年就新增效益308万元以上。该公司硝酸铵工段每年产生的氨氮废水约80kt／a,每吨废水中含氨、硝酸铵分别为8kg、3kg。自去年10月新建氨氮废水回收系统投入生产运行后,用氨氮废水替代脱盐水进行酸吸收,不但回收了废水中的氨和硝酸铵,而且每年节约脱盐水80kt／a,同时降低了吸收塔尾气中氮氧化物含量,减少了处理尾气的气氨用量,经济效益和环境效益明显。     

反渗透技术在电子工业废水处理和回用中的应用

彩色显象管制造所用的纯水,经生产工艺过程后成为含硫酸盐、钙、氟化物,重碳酸盐等物质的废水,如直接排放,不仅污染环境而且造成资源浪费。本项目应用反渗透技术,将此类废水重新处理成纯水,返回到彩管制造工艺的纯水供应系统,取得了明显的社会和经济效益。     

Potential for reuse of high cellulose containing wastewater after membrane bioreactor treatment

It is difficult to adequately treat wastewater with a high cellulose content with the traditional anaerobic and aerobic activated sludge processes. In this study we used microfiltration (MF) and reverse osmosis (RO) membranes combined with an anaerobic or aerobic activated sludge process to treat high cellulose containing wastewater for different hydraulic retention times (HRTs). The potential target applications for reuse of the treated wastewater are also compared. Six bioreactors, which were configured as anaerobic sequencing batch reactor (ANSBR), aerobic sequencing batch reactor (ASBR), aerobic membrane bioreactor (AMBR), AMBR plus RO (AMBR/RO), anaerobic activated sludge plus aerobic MBR (AOMBR), and AOMBR plus RO (AOMBR/RO), was operated in this study. The experiment results showed that, as expected, no effluents from the ASBR or the ANSBR could meet the Taiwan EPA criteria for effluent and wastewater reuse, no matter what the HRT was. However when the HRT was 12 h or more, the effluent from the AMBR and AOMBR processes did meet the criteria for effluent, but still did not meet the treated wastewater reuse criteria , primarily due to the color, total alkalinity, and total dissolved solid parameters. Finally, the effluents from the AMBR/RO and AOMBR/RO processes did meet the Taiwan criteria for both effluent and treated wastewater reuse when the HRT for the AOMBR/RO and AMBR/RO processes was equal to or longer than 12 h and 8 h, respectively. For the HRT of 4 h for both the AOMBR/RO and AMBR/RO process, and an HRT of 8 h for the AOMBR/RO process, neither the effluent criteria nor the treated wastewater reuse criteria were met.     

电镀废水综合处理及回用技术研究

以某线路板厂电镀废水综合处理的工程设计为实例,通过分析工程概况与工艺要求,采用物理法、化学法、物化法、生物法等对含镍废水、有机废水、含氰废水和综合废水等不同的电镀废水进行分类综合处理,并运用反渗透RO膜系统作为主要的控制装置实现废水回用处理.工程实际运行表明废水处理后能达标排放和回用,系统合理、有效、可靠,对电镀企业的废水处理、循环利用和清洁生产具有重要参考意义.     

反渗透浓缩液的再利用

介绍了反渗透浓缩液再利用的方法,综述了这些方法的原理、特点及应用,重点讨论了脱除反渗透浓缩液过饱和度进行回用以提高系统回收率的方法,以及膜蒸馏技术对浓缩液的回用处理、废水浓缩液处理及海水淡化浓缩液制盐,指出了反渗透浓缩液再利用在经济和环境上的必要性。     

电镀废水零排放工程实例

根据电镀废水水质的特点,对含氰废水、含油废水、含铬废水、含镍废水和含铜废水进行分类前处理后,与混排废水混合进行混凝沉降-MBR(膜生物反应器)法预处理,采用超滤和反渗透装置对废水作进一步处理实现回用,反渗透浓水则采用电渗析-MVR(机械式蒸汽再压缩)工艺实现脱盐后再次进入反渗透装置处理回用.工程实践表明,该系统的出水不...     

Digital textile printing (DTP) wastewater treatment using ozone and membrane filtration

Digital textile printing (DTP) is considered as an environmentally benign process because its wastewater production is relatively small compared with the conventional textile printing system. DTP is usually practiced at building office in an urban area rather than in a textile industrial complex, so that process development for on-site treatment of the DTP wastewater is currently needed. The aim of this study was to propose a DTP wastewater treatment system suitable for operation in building and to verify if the proposed system has a rationale treatment system should be compact and reliable because it should be installed near the DTP system. Thus, a hybrid system consisting of ozone, ultrafiltration (UF) and reverse osmosis (RO) was proposed for treatment of DTP wastewater. Prior to UF and RO, ozone was introduced to the DTP wastewater to reduce organic loadings to membrane filtration as well as to treat the concentrates recycled from UF and RO. When ozone was injected with C-T value of 255 g·s/L, the removal efficiency of COD and color was 63 and 81%, respectively. Ozonation of the DTP wastewater led to aggregation of colloidal particles, so that the cake resistance (R_c) calculated after ozone and UF was lower than that of the control (= without ozonation), suggesting that pre-ozonation is beneficial to not only flux enhancement but also to good permeate water quality. Further treatment of UF permeates using RO was carried out since the UF permeates was not enough for direct discharge or reuse. Final effluents through the whole process of ozonation, UF and RO met the criteria of direct discharge and reuse, suggesting that the proposed hybrid system could be used for DTP wastewater treatment satisfactorily.     

彩管厂含氟废水的强化混凝处理效果研究

针对彩管厂含氟废水常规处理工艺存在的问题,提出了合理的污泥回流强化混凝处理工艺,并在实验室小试研究和实际生产运行中取得了很好的处理效果。出水F^-质量浓度控制在10．5mg／L以下,工厂混合后的排放水F^-质量浓度基本稳定在4～6mg／L。同时,省去了氯化钙投药系统,石灰用量比原来减少40％,产污泥量减至原来的一半,混凝剂用量减至原来的1／5～1／4,沉淀效率比原来提高50％,处理成本则由2．75元／m^3降至1-35元／m^3,取得了显著的经济效益。     

Industrial wastewater treatment for reuse with reverse osmosis

This paper discusses the use of RO for industrial wastewater reclamation for its reuse. The performance of RO pilot plants processing several industrial wastewaters is outlined. The operating problems and pretreatment requirements are described. The potential benefits resulting from reusing wastewaters from selected industrial processes are shown.     

氯碱废水处理工艺选择及回用途径

探讨了氯碱生产中电石法聚氯乙烯离心母液废水、次氯酸钠废水、含盐废水、含汞废水、生活污水的工艺选择及回用途径,并具体阐述了各自的处理工艺及回用措施,其中对离心母液废水、次氯酸钠废水处理技术的选择及处理工艺进行了着重介绍。通过选择合适的工艺、合理的回用,确保了各类废水出水水质,提高了废水的回收利用率,收到了良好的经济效益及环境效益,对于氯碱生产过程中废水的综合治理及节能减排工作的开展具有一定的借鉴意义。     

膜法处理腈纶厂废水

本文主要研究了用聚砜超滤膜对腈纶厂热牵伸废水、水洗机废水处理回用以及用超滤膜及反渗透膜处理腈纶厂污水的情况。并从工艺可行性上作了探讨。同时，本文还对用膜法处理脯纶厂永经济效益作了估算。