印染废水处理技术探讨

阐述了物理化学法和生物法在印染废水处理中的应用.通过实例介绍了厌氧水解+射流曝气+气浮回流+混凝气浮工艺,运行结果表明在平均进水水质CODCr560mg/L,BOD5216mg/L,SS178mg/L,色度200倍的条件下,其去除率分别为86.5%、93.0%、81.0%和90.0%,出水水质可达到<广东省地方标准水污染物排放限值>(DB44/26-2001)中的一级标准.     

活性污泥法处理染料废水的研究

采用活性污泥法，以牛粪浆作污泥源，粉煤灰为生物载体，结合新型的喷射环流三相生物反应器，试验研究了三苯甲烷类碱性染料废水降解过程的特性及降解反应器内的流体力学行为     

射流曝气器研究进展

射流曝气技术的应用与完善 ,有赖于射流曝气器的研制与发展。本文综述了射流曝气器的研究进展 ,并根据供气方式、工作压力、结构类型、安装方式、安装高度进行了分类 ,其中着重详述了对研发射流器比较重要的结构类型 ,最后指出射流曝气器的研究趋势     

污水源热泵机组性能的研究

利用热泵系统回收城市污水中的热能，既开发了一种清洁能源，同时又降低了城市废热的排放，保护了环境。通过对以水源热泵为中心设备的污水热能回收与利用实验装置冬季供暖工况的实验研究，考察了热泵机组在以污水（模拟）为热源时的工作性能，测得热泵机组性能系数为2．61。     

Integral Model for Turbulent Buoyant Jets in Unbounded Stratified Flows Part 2: Plane Jet Dynamics Resulting from Multiport Diffuser Jets

An integral model for the plane buoyant jet dynamics resulting from the interaction of multiple buoyant jet effluxes spaced along a diffuser line is considered as an extension of the round jet formulation that was proposed in Part I. The receiving fluid is given by an unbounded ambient environment with uniform density or stable density stratification and under stagnant or steady sheared current conditions. Applications for this situation are primarily for submerged multiport diffusers for discharges of liquid effluents into ambient water bodies, but also for multiple cooling tower plumes and building air-conditioning. The CorJet model formulation describes the conservation of mass, momentum, buoyancy and scalar quantities in the turbulent jet flow in the plane jet geometry. It employs an entrainment closure approach that distinguishes between the separate contributions of transverse shear and of internal instability mechanisms, and contains a quadratic law turbulent pressure force mechanism. But the model formulation also includes several significant three-dimensional effects that distinguish actual diffuser installations in the water environment. These relate to local merging processes from the individual multiple jets, to overall finite length effects affecting the plume geometry, and to bottom proximity effects given by a “leakage factor” that measures the combined affect of port height and spacing in allowing the ambient flow to pass through the diffuser line in order to provide sufficient entrainment flow for the mixing downstream from the diffuser. The model is validated in several stages: First, comparison with experimental data for the asymptotic, self-similar stages of plane buoyant jet flows, i.e. the plane pure jet, the pure plume, the pure wake, the advected line puff, and the advected line thermal, support the choice of the turbulent closure coefficients contained in the entrainment formulation. Second, comparison with data for many types of non-equilibrium flows with a plane geometry support the proposed functional form of the entrainment relationship, and also the role of the pressure force in the jet deflection dynamics. Third, the observed behavior of the merging process from different types of multiport diffuser discharges in both stagnant and flowing ambient conditions and with stratification appears well predicted with the CorJet formulation. Fourth, a number of spatial limits of applicability, relating to terminal layer formation in stratification or transition to passive diffusion in a turbulent ambient shear flow, have been proposed. In sum, the CorJet integral model appears to provide a mechanistically sound, accurate and reliable representation of complex buoyant jet mixing processes, provided the condition of an unbounded receiving fluid is satisfied.     

生活污水处理后出水作杂用水的工艺研究

主要介绍采用铁盐射流曝气生物接触氧化 双层滤料滤池相串联的工艺，对住宅小区生活污水进行回用处理的实验。考察了气水比、原水水质、ＦｅＣｌ３投加量等对处理效果的影响，得出了最佳运行效果的参数     

热泵蒸馏应用于橡胶助剂废水预处理的研究

橡胶助剂废水属于难处理的工业废水，尤其是CBS（N－环己基－2－苯并噻唑次磺酰胺，英文名N－cyclohexy1-2-benzoth-iazole sulfonamide，简称Accelerator CBS)生产废水的COD达40000mg/L，并且含有杂环类有害化合物，难降解，难生化。经过絮凝沉淀、化学氧化、电化学法、吸附法等实验方法，处理效果都不是十分理想。采用热泵蒸馏技术对橡胶促进剂CBS的废水进行预处理实验，可使CBS废水的COD从40000mg/L降至1600mg/L，结果表明，该技术设备简单，投资少，操作方便，运行成本低，并能达到较理想的预处理效果。     

海底管道泄漏油气扩散规律数值仿真与对比分析

为研究海底原油与天然气单相泄漏扩散规律的差异性,合理制定应急响应策略,减小事故损失,针对海底管道失效所致的原油与天然气泄漏问题,基于计算流体动力学CFD方法,建立海底油气管道泄漏事故后果预测与评估模型,对特定事故场景下的海底原油与天然气泄漏扩散过程进行模拟与分析,从泄漏扩散过程、工况因素影响、泄漏后果及应对策略4个方面对比原油与天然气的泄漏扩散特性。结果表明:相同工况下,海底原油与天然气在泄漏速率、扩散时间、扩散形态及水平最大扩散距离方面存在显著差别;与天然气相比,原油泄漏扩散行为对工况因素具有更高的敏感性;原油泄漏会引发严重的环境灾害,天然气泄漏则会影响海上结构物的稳定性及引发火灾爆炸事故,据此需合理制定具有针对性的应对策略。     

生物质气化费托合成制航煤生命周期评价

基于生命周期评价（LCA）,对生物质气化费托合成制航煤（Bio-Jet Fuel）工艺进行资源-环境性分析.根据副产品水蒸汽的用途研究了供热和发电两种方案,并进行了数据不确定度分析.结果显示：除EP指标外,发电方案的各环境影响指标比供热方案降低了11.7%~40.8%.相比化石航煤,生物质航煤GWP降低52.6%~71.9%,不可再生资源消耗减少84.4%~93.6%.生物质生长阶段采用不同的分配方法,资源消耗潜值差异较小,但GWP、EP环境影响负荷会产生较大差异.且生物质航煤综合性能对原料消耗率敏感性最大,变化幅度为-16.6%~+17.3%.采用不确定度分析方法对评价结果进行数据质量评估,各环境影响类型的不确定度处于5.0%~12.5%.     

火焰撞击受限顶棚条件下顶棚最高温度数值模拟研究

顶棚下方最高温度是隧道火灾发展蔓延时的重要参数。针对火焰撞击顶棚并受到顶棚侧墙限制的强羽流驱动的顶棚射流,利用FDS模拟了18种缩尺寸隧道火灾工况,研究了顶棚下方最高温度随着火源功率、火源与顶棚距离的变化规律。结果表明:火焰撞击区域附近顶棚下方温度随着火源功率的增大而降低,随火源与顶棚距离的增大而升高;相反,在远离火源区域顶棚下方的温度随火源功率增大而升高,随火源与顶棚距离增大而降低;同时,通过分析隧道中心面上顶棚下方温度分布规律,提出了火焰撞击受限顶棚时顶棚下方最高温升的预测模型,研究结果能为实际的隧道消防提供一些参考。