实现污泥深度脱水和重金属去除的生物沥浸处理技术

阐述了生物沥浸处理技术的基本原理、工艺流程及主要技术特点,通过典型应用工程实例表明,采用生物沥浸预处理方法不但可大幅度提高污泥脱水性能,而且可去除污泥中的重金属、恶臭,杀灭病原物,脱水后的污泥水分含量很低(60%以下),无臭、卫生、无害,可广泛应用于城镇污水处理厂及工业行业的污泥处理,市场前景十分广阔。     

污泥浓缩脱水及相关技术研究进展

文章对污泥浓缩、污泥调理、污泥脱水技术发展现状进行了介绍,着重对主流污泥脱水技术及设备选型进行了分析比较,强调了污泥处理技术具有各自的适用范围.此外还介绍了超声波技术在污泥处理领域应用的前景.     

长庆油田采出水处理系统污泥收集及处理

分析长庆油田采出水系统内污泥处理现状,介绍负压排泥和撬装离心脱水组合技术处理污泥的原理、流程及运行情况。该工艺流程在密闭状态下运行,占地少,污泥脱水率稳定,为油田采出水系统污泥处理技术发展和推广应用做了新的尝试。     

石油化工系统污泥处理研究

石油化工系统污水处理产生的污泥同城市污水处理产生的污泥有一定区别,针对兰州石化公司炼油化工污泥其固有的组分特点,并通过转筒离心机、板框压缩机、带式压滤机、真空过滤机等不同机械脱水方式的比较,提出了这类污泥在处理和处置时应注意的问题及几点建议。     

多功能复合式真空预压污泥脱水减量施工技术研究及应用

结合工程实例,针对沈阳市祝家污泥储存场污泥的特点,分析介绍了通过多功能复合式真空预压法完成祝家污泥脱水处理的施工技术.     

含油污泥无害化处理及综合利用的途径

原油脱水以及油田和炼油厂的污水处理系统会排出大量的含油污泥,从环境保护角度出发,必须进行无害化处理或综合利用。处理含油污泥的方法很多,有固化处理法、土地耕作法、回收污油法、固液分离处理及综合利用等方法。较为详细地叙述了各种方法的原理、特点及适用情况等,这些方法各有利弊。今后还应进一步加强含油污泥性质与特征的基础性研究,积极寻求多种利用途径,彻底解决含油污泥污染问题     

油气田废水污泥脱水处理工艺流程优化研究

油气田开发产生的污泥来源于油气田生产废水产生过程,具有干化周期长、含水率高、体积大、堆放、运输困难等特点。因此有必要对污泥脱水的工艺流程优化进行研究,提高污泥脱水效率,缩短污泥干化周期,为后续运输和处理创造必要的条件。本文选取实例,通过对污泥特性、污泥脱水剂优化选择试验和污泥脱水性能试验,提出了油气田废水污泥脱水处理工艺流程优化方案。     

含油及碳氢化合物污泥处理方法

对固体废物有毒有害物质进行处理或处置的方法有掩埋法、焚烧法及高温热解、溶剂洗涤等方法。文中介绍了一种化学处理方法,在脱水、固化、稳定、中和、钝化的系统处理过程中,同时交叉进行物理、化学和热分解反应。利用这种方法处理含油及碳氢化合物污泥,能降低碳氢化合物废物中有毒有害成分的含量,使其毒性、危险性得到有效控制。该方法主要应用于石油化工、油田开发工业、煤加工工业、冶金工业等领域。     

污泥脱水药剂中试试验研究

江苏某填埋场垃圾渗滤液的剩余污泥经脱水后含水率为88％左右,难以满足填埋要求,而且离心后的滤液中SS浓度较高,会对污水处理产生较大的负面影响.为解决该问题,开展了污泥深度脱水中试试验,通过分析絮凝剂的投加量以及多种絮凝剂组合投加对污泥脱水的效果,并对污泥离心滤液的各项指标进行分析,优选出最佳药剂组合方式及投加量.中试试...     

含油污泥不同调剖方式可行性评价

针对采油厂在原油脱水和污水处理过程中产生的含油污泥处理难题,选取两种有代表性的样品A含油污泥、B油土开展含油污泥不同调剖方式可行性研究。以含油污泥为原料,考察了其在水中、聚合物HPAM中的分散性,进行了室内悬浮性能评定实验,得出两种样品形成悬浮体系的最佳配比;同时对两种样品进行了成胶实验。发现热处理后的B油土在HPAM中的分散性优于A含油污泥。A含油污泥可以采用HPAM携带直接注入的回注方式;B油土采用合适交联剂,成胶后可以均匀分散在凝胶体系中,可用于注水井调剖。     

交流电凝聚技术及其在油田污水处理方面的应用研究

交流电凝聚（ACE）技术能有效地从稳定的悬浮液和乳浊液中凝聚并分离出固相、重金属和油。电压缩和电絮凝促进凝结、快速沉淀及脱水，且不使用昂贵的高分子电解质和化学药品，也不需使用复杂且易于被超细微粒堵塞的过滤系统。木文介绍了ACE技术的初步原理及其在国外油田污水处理方面的应用，并与传统的污水净化方法进行了比较。     

The effects of recovering fibre and fine materials on sludge dewatering properties at a deinked pulp mill

The manufacture of deinked pulp generates large amounts of waste for disposal. The yield loss in the production of recycled paper can be up to 25%. The use of landfills for waste disposal is very expensive and will be prohibited in Europe in the next few years. Thus, there is a great pressure to improve the material efficiency and to reduce the amount of waste that is produced at deinked pulp mills. However, the issue is complex because an improvement of the material efficiency at one process unit may deteriorate the performance of other stages. For example, the attempts to increase the fibre yield in the deinking processes can lead to poor sludge dewatering properties, resulting in that there are no added advantages for the mill anymore.This work aims to determine the limitations between the sludge dewatering properties and the improvements in material efficiency at a deinked pulp mill by investigating the dewatering properties of sludge samples that contained variable amounts of fine screening and flotation froth rejects. The results show that the deinked pulp mill material efficiency can be increased without weakening the sludge dewatering properties if the fibre content is not reduced below a certain limit. The material efficiency can be increased either by (1) recovering fibres at an acceptable quantity where the fibre content does not decrease below the limiting point or by (2) recovering fine materials simultaneously with fibres in a way that maintains the fibre content above a limiting point. The first method provides an opportunity for deinking mills to increase the yield, even though the increase is less than 2 percentage units. With the simultaneous recovery of fibres and fine materials using the second method, it would be possible to improve the material efficiency at the deinked pulp mill by approximately 5 percentage units without affecting the dewatering of the combined sludge.     

彩南油田污水处理系统运行现状及改进

针对目前彩南油田污水处理后净化水的含油和含悬浮物指标不能满足回注标准Q/SY XJ0039-2001《彩南油田注水水质标准》的问题,对该站污水处理系统运行现状进行了调查。文章对已建污水站来水水量、水质及现场主要设备存在的问题:水量增大,系统处理能力不足;水质变化,处理工艺不能适应水质处理要求等问题,进行了针对性的分析研究。提出了今后改进的建议:建议考虑两级过滤设计,并采用新型滤料,同时做好过滤前水质监测,保证来水水质满足设计要求;加强维护管理,定期反洗等工作;建议结合新疆油田处理效果好的污泥离心脱水技术,开展室内药剂筛选,为污泥减量化设计工作提供依据。     

高效粉煤灰分选系统的设计与应用

粉煤灰分选是一种实用技术,从分选机的原理出发,设计合理的分选机结构,选择合理的系统布置和参数能够保证分选的高效率。文中还着重对分选系统的防磨措施、工艺设计、调节方法、分选效率作了详细的描述。对实际应用项目的设计、安装调试、运行测试等内容做了介绍,并验证了本分选系统的调节手段多样、方便,效率高达85%以上。     

Electroosmotic dewatering of dredged sediments: bench-scale investigation

The Indiana Harbor (Indiana, USA) has not been dredged since 1972 due to lack of a suitable disposal site for dredged sediment. As a result of this, over a million cubic yards of highly contaminated sediment has accumulated in the harbor. Recently, the United States Army Corps of Engineers (USACE) has selected a site for the confined disposal facility (CDF) and is in the process of designing it. Although dredging can be accomplished rapidly, the disposal in the CDF has to be done slowly to allow adequate time for consolidation to occur. The sediment possesses very high moisture content and very low hydraulic conductivity, which cause consolidation to occur slowly. Consolidation of the sediment is essential in order to achieve adequate shear strength of sediments and also to provide enough air space to accommodate the large amount of sediment that requires disposal. Currently, it has been estimated that if a one 3-foot (0.9-m) thick layer of sediment was disposed of at the CDF annually, it would take approximately 10 years to dispose of all the sediment that is to be dredged from the Indiana Harbor. This study investigated the feasibility of using an electroosmotic dewatering technology to accelerate dewatering and consolidation of sediment, thereby allowing more rapid disposal of sediment into the CDF. Electroosmotic dewatering essentially involves applying a small electric potential across the sediment layer, thereby inducing rapid flow as a result of physico-chemical and electrochemical processes. A series of bench-scale electrokinetic experiments were conducted on actual dredged sediment samples from the Indiana Harbor to investigate dewatering rates caused by gravity alone, dewatering rates caused by gravity and electric potential, and the effects of the addition of polymer flocculants on dewatering of the sediments. The results showed that electroosmotic dewatering under an applied electric potential of 1.0VDC/cm could increase the rate of dewatering and consolidation by an order of magnitude as compared to gravity drainage alone. Amending the sediment with polymers at low concentrations (0.5-1% by dry weight) will enhance this dewatering process; however, the optimal polymer concentration and the cost-effectiveness of using polymers should be investigated further.     

云平台助力智慧环保

结合全国以及福建省环境管理信息化的实践经验,提出了狭义的云概念和面向全省各级环境主管部门的基于云平台的信息化建设思路。将新一代信息技术充分融入到环境综合管理应用中去,并从架构、技术应用及效益几个方面进行了分析,是“十二五”期间福建省环境信息化大踏步迈进的有力探索。     

关于德国污泥处理应用实例的简介

随着环保治理力度的加大,污水处理厂的污泥也不再停留在脱水、填埋处理上,进一步减量化处理已被列入日程。结合在德国接受的9个月的供排水专业技术进修的经历,文章重点介绍了进修中实习的四套综合性污水处理厂的污泥处理技术路线和部分处理成本,并针对性的对国内污泥处理手段进行了简单的论述,再结合工作中的实际经验和进修的收获,分析了当前国内污泥处理技术路线选择时应该注意的一些问题和建议。