卧式旋转型污泥好氧堆肥装置的研制

利用自行研制的生产性规模的好氧动态堆肥装置地行了污泥稳定化和无害化处理的应用研究，探讨了影响好氧堆肥的主要因素温度、含水率、供氧量和通风方式之间的关系，确定了污泥动态发酵器的最佳运行参数，为城市污水厂污泥的处理和处置提供了一条可行的技术路线。     

某再生水厂沼气系统设计探讨

城市污水处理厂污泥处理的思路是对其进行减量化、稳定化、无害化和资源化。污泥在消化过程中产生沼气,其中可作为燃料的甲烷气体约占2/3。污泥消化与沼气发电是城市污水厂节能降耗,降低运行成本,实现污泥资源化的重要措施。消化池产生的沼气,需要通过沼气净化、存储及输送系统,安全稳定地输送至发电机、锅炉房等利用点。以北京某新建再生水厂为例,对新建沼气收集及净化系统的设计进行分析讨论。     

污泥固态好氧发酵成套设备的开发

采用自行研发的好氧动态发酵系统对城市污水处理厂的脱水污泥进行处理,研究了污泥好氧发酵处理过程中温度、含水率、供氧量等参数的变化规律。结果表明,污泥好氧发酵过程可以实现顺利升温并在55℃以上维持48h,有效地降低了物料的含水率,去除了病原菌、寄生虫卵和大肠杆菌,达到了污泥减量化、稳定化、无害化、资源化的目的。     

谈中小城市污水处理厂污泥处置规划的编制

介绍了中山市污泥处置规划的编制情况及成功经验。结合城市垃圾处理基地的规划建设布局污泥处置厂,较好的实现了污泥的"减量化、无害化、稳定化处理以及综合利用"。     

高密度用地背景下深圳某水质净化厂工艺研究

深圳市作为我国超大型城市的代表,其土地资源高度紧张,城市水质净化厂等基础设施的建设趋向于采用立体化、紧凑化的用地模式。深圳埔地吓水质净化厂（三期）采用地下式水质净化厂+上盖公园的建设模式。通过对该水质净化厂污水处理工艺、污泥处理工艺以及除臭工艺方案进行比选研究,最后确定污水处理采用“三段式AAO”生物处理工艺、深度处理采用“磁混凝高效沉淀池+精密过滤器”工艺、污泥处理采用“浓缩+板框深度脱水+低温热干化”工艺,全流程采用生物除臭,出水水质指标能够稳定达到并优于设计标准。该地下式水质净化厂的建设与达标运行为超大型城市高密度用地情况下水质净化厂的升级改造提供了参考。     

“产业协同、循环利用”城市污泥处置新模式探讨

目前我国城市污水厂产生的湿污泥数量巨大,但大多数都没有得到安全处置,二次污染情况严重。如何有效处置湿污泥是大部分城市面临的难题。污泥处置的方法很多,其原理和应用范围也不尽相同。介绍了一种污泥处置新模式,即遵从产业协同、循环利用的理念,将污泥处置列入区域整体规划中,利用相关产业的资源,协同处置污泥。在保证污泥减量化、无害化与稳定化处置的同时,实现资源化利用。     

庆阳市污泥好氧发酵处理工程设计

甘肃省庆阳市污泥处理工程近期规模为150 t/d(污泥含水率为80%),集中处理运输距离在100 km以内的一区四县的脱水污泥,采用槽式高温好氧发酵工艺,实现污泥减量化、稳定化、无害化,并逐步实现土地利用资源化。介绍了主要设计单元的工艺参数,对发酵过程产生的臭气采用生物除臭处理,对运行过程中产生的扬尘采用喷水降尘滤池处理,对发酵槽湿度进行控制,可为此类项目设计提供借鉴和参考。     

圆盘污泥干化技术及工程应用介绍

利用三菱圆盘干化机进行污泥低温干化,分析污泥干化过程与资源利用,从而为确立我国污泥稳定化、无害化、减量化、资源化处理的最佳途径提供技术支持。     

广州市城市污水处理厂污泥处理处置初步研究

论述了广州市城市污水处理厂污泥的产生、特性、处理和处置问题。概述了污泥处理和处置方法的进展,并结合广州市污泥成分复杂、资金利用等实际情况,提出了近远期结合的污泥处理处置方法,逐步实现污泥的稳定化、减量化、无害化与资源化。     

污水污泥处置方法研究

市政污泥为污水处理厂生产过程中的产物,含有一些有害成分和有益成分。国内外对污泥最终处置有填埋、土地利用、建材利用3种形式,欧盟、日本和美国等国家还有不同的处置方式特点。在污染物浓度影响利用时,则倾向无害化,在国土辽阔地区,则倾向于土地利用。我国多数污泥未得到妥善处置,随意抛弃、倾倒现象普遍存在,因此根据不同地区各自的特点,选取不同的污泥处置方式是迫在眉睫的问题。其中污泥减量化无机化后建材利用和减量化稳定化后填埋应为主要应用方向。     

三峡库区污水处理厂污泥处置现状研究

目前,重庆三峡库区共建有污水处理厂18座,日产污泥132．95t／d。污泥处理主要采用浓缩＋机械脱水的工艺,然后送至垃圾填埋场填埋。运行过程中,由于脱水污泥含水率较高（80％左右）,且未经稳定化处理,已经极大的影响了填埋场的正常运行。针对这种情况,本文提出：在有垃圾填埋场的情况下,通过机械脱水、石灰稳定化等处理后进行填埋,不具备卫生填埋条件的实行堆肥后资源化利用。     

污泥消化沼气的净化利用系统设计

为了利用污泥消化产生的沼气 ,发挥其高效热能 ,减小环境污染 ,结合工程实例 ,通过对沼气采取过滤、脱硫等净化措施 ,保护沼气锅炉及沼气发动机的正常运行 ,延长设备的使用期 ,降低沼气燃烧时二氧化硫的排放量 ,并利用沼气燃烧时产生的热量加热污泥 ,产生良好的经济效益和环境效益     

Comparison of humification processes occurring during sewage purification in treatment plants with different technological processes

The course of the humification process of sewage sludge collected from three biologic-mechanical treatment plants with different treatment technologies was studied. The maturity of sewage sludge and its usefulness for agricultural purposes was also discussed. The physical-chemical properties of humic acids extracted from sewage sludge received from comparable stages of sludge purification were described. Changes of the sludge properties during sewage purification and the progress of the humification process were investigated with EPR, IR and UV/VIS spectroscopic methods. The content of the elements and the carboxylic groups in humic acids extracted from each stage of the sewage treatment were also determined. It was found that the humification processes take place in all three treatment plants but with different intensities resulting from the differences in the individual cleaning processes in these plants. The most intensive changes of physical-chemical parameters in the extracted humic acids were observed in the anaerobic digester where mesophilic fermentation occurs. The sludge oxygenation processes also significantly affect the course of the humification process during sewage treatment.     

给水厂排泥水处理回用的若干问题

给水厂的排泥水来自于水厂的沉淀池、澄清池排泥水或滤池反冲洗废水,对其进行处理利用是节约水资源、减少水污染的有效措施。从排泥水的生物、物理和化学特性上分析了在其处理利用时可能存在的问题,指出对排泥水进行混凝沉淀预处理或采用膜过滤后再回用,可提高水厂出水的微生物安全性;还介绍了国内外排泥水处理利用的现状。     

双膜法处理污水厂出水用于工业回用

青岛市黄岛区属于严重缺水地区,水资源短缺已成为制约地区经济发展的瓶颈,拟以污水厂合格出水为原水,实现中水精制满足工业用水需求。精制中水回用站占地为1. 86 hm²,项目采用BOO形式,总投资为2. 1亿元,以污水厂达到一级A标准的出水为原水,为黄岛区北部工业园区用水大户供水。设计产水量为20 000 m³/d,设计进水量为34 776 m³/d,设计外排水量为14 616 m³/d。回用站分为产水、浓水及污泥三个系统,产水系统以高效石灰软化沉淀池、超滤、两级反渗透为核心,设计总回用率为57. 49%,脱盐率> 98%,TDS≤100 mg/L;浓水系统以活性炭沉淀池为核心,出水达到一级A标准;污泥系统采用板框压滤机,污泥含水率<80%后外运。系统实际运行效果良好,达到设计要求。     

预氧化联合污泥回流处理低浊微污染水试验研究

研究了采用高锰酸钾预氧化与污泥回流联用工艺对低浊微污染原水的处理效果。结果表明,采用污泥回流可有效改善沉后水浊度,最佳回流比为60%,沉后水浊度从无回流时的1.91NTU下降到1.51NTU;粉末活性炭与污泥一同回流能改善滤后水有机物的去除效果。投加高锰酸钾进一步提高了处理效果,污泥回流则强化了高锰酸钾的助凝除浊效果,使有机物去除作用更显著。     

Sewage Sludge Recycling to Agricultural Land: the Environmental Scientist's Perspective

During the next fifteen years, the recycling of sewage sludge to agricultural land will increase significantly in Scotland as a result of EC regulations. This paper describes how soils and related environmental data around Edinburgh can be interrogated and interpreted to assess (a) the suitability of land for sludge utilization, (b) the risk of water pollution in relation to different soil conditions, (c) the ability of soils to adsorb potentially toxic elements in the sludge to prevent transfer to water or plants, and (d) the operational security and environmental sustainability of sludge recycling. The interpretations can make a valuable contribution to the appraisal of sludge disposal policy and implementation, and provide a framework for technology transfer between engineering, environmental and agricultural interests.     

The performance of activated sludge plants compared with the results of various bacterial toxicity tests—A study with 3,5-dichlorphenol

It was investigated whether and to what extent the results obtained by various methods of determining bacterial toxicity in waste water could be applied to conditions prevailing in activated sludge plants or in receiving water.3.5-Dichlorphenol (DCP) was studied as an example of a persistent chemical which constitutes a pollution risk to water. The bacterial toxicity limits determined by five different methods—respiration after a 20-h consumption period, consumption rate after 2-h incubation, dehydrogenase activity determined with TTC. gas formation in a fermentation tube and inhibition of the cell division of Pseudomonas—all agreed with the toxicity limit of 5 mg DCP I⁻¹ found in degradation tests in laboratory activated sludge equipment. No safety margin need be taken into account when the test results are applied to biological purification plants.In the activated sludge plants the degradation of the industrial waste water was markedly impaired only when the DCP concentration was increased to 25 mg I⁻¹. This varied in degree according to the sludge load at the beginning of the trial.Shock loads of DCP did not cause the expected fall-off in degradation but only a moderate fluctuation in its rate. The decline in degradation following continuous and also discontinuous addition of DCP was largely or completely overcome within a few weeks by the bacteria becoming adapted to DCP.In samples of river water the toxicity limit as determined by the tests was in the region of 2 mg I⁻¹.     

城市污水处理厂环境影响评价案例分析

城市污水处理厂的建设与运行直接关系到对周边环境的影响。结合具体案例的分析，认为进行环境评价时应重点关注厂址选择、尾水排放、中水回用以及污泥的处置和综合利用等问题，并提出切实可行的对策和建议。     

嘉兴地区水厂生物预处理与深度处理的生产实践

总结了嘉兴地区各县市水厂采用生物预处理、深度处理等净水技术处理微污染原水的工程实践经验，认为应重视冬季低温、填料积泥以及臭氧发生器的气源等问题。