工业园区地下式污水处理厂工程设计

3万mF,全地下式，采用高效沉淀+A2/O+MBR工艺，出水执行《城镇污水处理厂污染物排放标准》(GB 118-2002)一级 A标准。介绍了该厂污水、污泥处理工艺和主要处理构筑物的设计参数，并总结工程特点。关键词：工业园区；地下式污水处理厂；A/A/O工艺；MBR中图分类号：TU992.03

文献标志码：B

文章编号:1009-7716(2020)01-0075-030引言水，有较充足的碳源和适宜的碳氮比、碳磷比，可

采用生物脱氮除磷。为实现泥水分离，同时强化系 “水十条”要求各工业集聚区修建集中污水处

统生化功能，本工程在反应池后设置MBR膜池， 理设施，越来越多的工业园区选择新建园区污水

一方面，膜截留了反应池中的微生物，池中的活性 处理厂，污水分散处理逐渐成为在集中建设大型

污泥浓度大大增加，使降解污水的生化反应进行得

污水厂之外的一种思路。在城市土地资源愈加稀 更迅速更彻底；另一方面，由于膜的高过滤精度，

缺的情况下，小型的地下污水厂的建设近年来发 保证了出水水质。展迅猛本文以某工业园区地下污水处理厂工程 由于本工程来水仍含20%左右的工业废水， 为例，对污水厂工程设计进行了介绍。存在水质水量不稳定的问题，故需要经过初沉池沉

1 工程设计水量和水质淀,去除进水中的无机污染物。同时在初沉池后设

置调节池兼事故池,对污水进行水质和水量的均衡

本工程服务于某光电产业园区，该产业园是 调节,避免进水水质变化对全厂处理工艺产生较大

集光电企业、科研机构、中介服务机构等为一体的

的冲击负荷。在初次沉淀池的设计中采用高效沉淀

光电专业园区，占地1.98 kn?。根据污水量预测，确

池的形式以节约用地，并采用较高的表面负荷。定近期污水厂处理规模为3万n?/d(K=1.45, 进水中工业废水存在难降解的大分子有机物

Qmax=l 812.5 mVh),设计进出水水质见表1 o质等，推荐选用臭氧作为消毒工艺，在消毒同时能

表1污水处理厂设计进水水质

mg/L够分解污水中的难降解大分子有机物，无二次污

染。但是臭氧氧化工艺耗电量大，对污水处理成本

指标CODbod5ssNH,-NTNTP具有显著的影响。由于污水厂服务区内光伏企业尚

进水 /(mgL*_1)35015026030457未大量入驻，本工程近期先实施紫外线工艺作为项

目前期的消毒工艺以节约运行成本，待光伏企业陆

出水 /(mgL*_,)W50W10W10W5W15W0.5续投产后再实施催化氧化构筑物。处理程度/%^85.7M93.3M96.2M83.3M66.7M92.8综上所述，本工程推荐选用高效沉淀

+A7O+MBR+催化氧化工艺，工程近期先实施高效

2污水处理工艺沉淀+A70+MBR+紫外消毒处理构筑物，见图lo

2.1污水处理工艺的选择2.2主要污水处理构筑物的设计根据污水厂进水水质指标，其BODJCOD#(1)粗格栅及进水泵房0.43, BOD5 /TN=3.3, BOD5 /TP=21.4,属于可生化污拟建粗格栅及进水泵房1座。粗格栅由2台钢

丝绳牵引格栅除污机组成，单台格栅宽度为1.2 m, 收稿日期:2019-09-25栅隙为20 mm。进水泵房设潜水轴流泵4台，3用1

作者简介：阮丽峰(1980—),女.副,工程师，从事排水 行业管理工作。备(Q=605 m3/h, H-\\ .7 m( 1.4~2.0 m), N=22 kW )o76防洪排水城市道桥与防洪2020年1月第1期图1工艺流程图(2) 细格栅及曝气沉砂池细格栅设有2台内进流板式细格栅，每台格

栅宽度1.6 m,孑L板宽度1 000 mm,拦截净间距 6 mm。曝气沉砂池1座2池，每池尺寸为12.0 m X

5.0 m,有效水深H=2.65叫需空气量6 m3/min,利 用鼓风机房风机供气。(3) 膜格栅膜格栅渠共分3格，每格宽度1.5 m,设有3

台内进流板式超细格栅，每台格栅宽度1.5 m,孔

板宽度2 000 mm,拦截净间距1 mm。(4) 高效沉淀池高效沉淀池1座2池，每池处理流量为15万m3/d, 每个沉淀池尺寸为:6.7 m x 6.7 m,池总深为7.5 m,

有效水深为7.0 m。混合时间1.34 min,絮凝池停留

时间9.9 min,高峰表面负荷为20.19 m7m2-ho(5) 调节池调节池兼顾事故池，为矩形，平面面积152 n?,

有效水深6.7 m,水力停留时间0.8 ho(6) 生物反应池拟建2座A20生物反应池，有效水深6.3 m, 采用沟流式池型。正置A/A/0运行模式，总停留时 间15.3 h,厌氧区停留时间2.3 h,缺氧区停留时间

4.6 h,好氧区停留时间8.4 h,缺氧区污泥回流比

200%,好氧区污泥回流比400%,气水比5 : 1。(7) MBR膜池拟建2座MBR膜池，有效水深3.6 m,回流比

500%。膜组器48组，膜通量16.2 U(m-h),平均膜

孑L径：0.3 |JLm2o(8) 膜设备间除膜相关设备外，膜设备间安装管式紫外线

消毒器一套,用于近期尾水消毒。(9) 鼓风机房新建鼓风机房1座，位于生反池上部，平面尺

寸13.5 m X 19.5 m,设置高速磁悬浮鼓风机共4

台，2台用于工艺(1用1备，＜2=110 m3/min , P=

0.072 MPa,N=250 kW),2 台用于膜清洗(1 用 1

备，Q=198 m^/min,宀0.045 MPa,N=250 kW)o(10)臭氧催化氧化池(远期建设)设计平均流量1 250 m』/h,设计最大流量

1 812.5 m3/h,臭氧投加量20 mg/L，催化氧化池

12.7 m x 49.9 m( 8 座)，有效水深 5.3 m。3污泥处理工艺3.1污泥处理工艺的选择本工程主工艺采用“高效沉淀+A2/0+MBR”工 艺，剩余污泥少，且污泥的性质较稳定，污泥处理 工艺推荐采用经浓缩后投加FeCI3、PAM以及高效 深度脱水剂等进行调理，后采用高压隔膜板框压

滤的污泥处理方案，经处理后含水率小于50%,外 运统一处置。3.2主要污泥处理构(建)筑物的设计(1) 储泥池拟建储泥池1座，平面尺寸7.1 mx 4.0 m,有效

水深3 m,污泥总量5 261 kg/d,污泥流量526.1 nP/d,

有效容积85.2 rr?,平均停留时间4 ho(2) 污泥浓缩机房采用机械浓缩将剩余污泥含水率从99%浓缩

至95%,污泥减容约80%。叠螺式污泥浓缩机2套, 单套脱水机处理能力300 kgDS/h,工作时间12 h/do(3) 污泥脱水机房及料仓拟建污泥深度脱水机房及料仓1座。平面尺

寸为 15.0 m x 18.7 m。污泥脱水机房内安装有2套板框压滤机，每 台脱水机处理能力为6tDS/d,板框压滤机工作时间

为12 h计。脱水后污泥含固率不低于50%,固体回 收率95%O深度脱水机房内设污泥调理池，及低压进泥

泵、高压进泥泵、挤压螺杆泵、石灰投加泵和加药

设备等板框压滤机附属设备。脱水污泥含水率

50%,脱水后污泥量为12.8 m7d0本工程设置有污泥料仓2座，与深度脱水机

房合建，单座料仓有效容积8 m3o污泥存放时间为

1.2 d,料仓整体位于地下箱体内，上部预留有设备

检修空间，下部空间4 m.供运泥车通行。4总平面布置4.1设计原则考虑到地下式污水处理厂自身运行的安全性

和便利性，本工程拟将综合楼及变配电间置于地

面之上，地面上预留远期建设的臭氧制备间以保 证液氧储存的安全性。其余污水污泥功能区块都 置于地下箱体内，设置检修和巡视通道。地下通道 出入口的设置便于人员，设备及消防车的进出。2020年1月第1期城市道桥与防洪防洪排水774.2总平面详细设计本工程占地1.67 hn?,分为地上和地下箱体两

部分(见图2),地下箱体为2层。图2厂区上层平面不意图地下箱体顶位于地面下0.5-1.5 mo上部种植 有绿化、喷泉等公园景观。地下箱体的北侧和南侧各设置有一条4.5 m 宽的进出通道，用于车辆及人员进出地下箱体，通 道进入箱体处位于地面下4.7-6.0 m。地下箱体西南侧和规划路之间设置有一座臭 氧催化氧化池和一座清水池(均远期建设)，用于

尾水的臭氧消毒，见图3。臭氧催化氧化池及清水

池顶部覆土 0.4 m,平面位置位于管理区内。图3厂区内构筑物布置平面图地下箱体为本工程主体构筑物，共分两层，地

下一层平面位于地面下4.7~6.0m,地下二层平面 位于地面下13.75 mo地下一层平面构筑物布置见

图4O进水管位于地下箱体东南侧，故箱体负一层 构筑物按从东南向西北依次布置有污泥浓缩机 房、深度脱水机房、粗格栅及进水泵房、细格栅及

曝气沉砂池、膜格栅、高效沉淀池、调节池、AAO 池、鼓风机房、膜池、膜设备间。箱体中部设置有一

条宽6 m的车行道，用于设备安装检修、污泥运输 等车辆的通行。图4箱体负一层平面布置图箱体负二层安装有高效沉淀池的剩余污泥泵

等设备。为保证暴雨时进入箱体的雨水可及时排

除和便于部分构筑物的放空检修，本工程在箱体

南侧的负二层区域各设置了一座放空泵井，可将

最低处的污水提升后排入速闭闸门井。5本工程的特点(1) 高效沉淀池作为初次沉淀使用，节约用

地。同时考虑在高效沉淀池前设置了超越措施，当

进水碳源不足时，部分原水可不经过高效沉淀池 直接进入后续生物处理措施。(2) 本工程采用臭氧氧化技术配合AAO-MBR 工艺使用，可进一步降低水中难降解有机污染物，

同时兼具消毒杀菌的功效，能确保出水稳定达标

排放。(3) 选用机械浓缩+板框脱水工艺，保障污泥

含水率低于50%后外运，为污泥处置创造了根本 性条件。(4) 结合近远期进水水质的变化，合理选择消 毒方式，节约运行成本。(5) 总平面布置及高程设计紧凑规整，用地面 积小,地上部分按照公园式景观设计,整体大气美观。6结语随着工业园区的快速发展，在日益严格的环

保要求下，工业园区污水处理越来越受重视。地下

式污水厂在土地资源有限和环境影响要求提高的

多重困境下，正成为工业园区污水处理厂建设的 一种主要选择。本文以实际案例进行分析和介绍，

为相似的污水处理厂建设提供借鉴。参考文献：[1 ]赵越.小型地下污水处理厂设计概要[J].城市道桥与防洪,2017(8):112-115.initial equilibrium position of suspension bridge and the tension of the main cable. After comparison, the results of two calculation methods show that this approximate calculation method of pitch line method can

satisfy the engineering demands and is convenient to use. No complicated programming calculations are required. This method has a certain practical significance and can he referred for the main cable alignment

analysis of the similar bridges.Keywords： pitch line method, suspension bridge, main cable alignment analysisDiscussion and Study on Influences of Different Optimization Methods on Completion State of Cable-stayed Bridge

.................................................................................................................................................................. Liu Feng ( 68 )Abstract： Referring to the practical data of engineering cases, with the help of the finite element mathematic

calculation mode, based on the zero displacement method and the minimum bucking strain energy method,

this paper thematically analyzes and studies the mathematic calculation of the completion state of

cable-stayed bridge. According to the comparison of the related cable forces, bending moments and

alignments, this paper analyzes the influences of the different optimization calculation methods on the

completion state of the cable-stayed bridge in order to provide the study and technical references for the similar projects of cable-stayed bridge, and to help the construction of the safe and strong cable-stayed

bridges.Keywords： cable-stayed bridge, completion state of bridge, optimization method, finite element, mathematic

calculation, analysis and studyCalculation and Analysis on Vertical Rotation Construction of Steel Pylon for Single-pylon Cable-stayed Bridge ............................................................................................................... Dong Tao, Qian Ying, Zeng Xiangwang ( 72 )Abstract： The vertical rotation construction method can reduce the difficulty to assemble the cable and

pylon structure in high altitude, which is easy to control the dimensional accuracy of structure, to improve the

welding quality and work efficiency, and is widely applied in the construction of cable-stayed bridge. In order

to analyze the stress state during the vertical rotation construction of steel pylon of single-pylon cable-stayed

bridge, the ANSYS software is used to simulate the vertical rotation construction process of single-pylon

cable-stayed bridge and to calculate the stresses, deformations and stabilities of steel pylon at the different

stages. The results show that the stress states of the steel pylon is the most unfavorable in the starting and ending stages of the rotating body, which should be specially monitored. The deformation of steel pylon is

larger during the starting stage, and should be taken as the main control and monitoring index.Keywords： single-pylon cable-stayed bridge, vertical rotation construction, calculation and analysisFLOOD CONTROL & DRAINAGEEngineering Design of Underground Wastewater Treatment Plant in Industry Zone ......................... Ruan Lifeng ( 75 )Abstract： The small-sized underground wastewater treatment plant (WWTP) is used more and more in the

sewage treatment of industry zone. Taking a WWTP of opto-electronics zone as an example, the construction

scale of this WWTP is 30 000 m3/d, is fully underground and uses the efficient sedimentation + A2/O + MBR

technology. Its effluent executes the Level A standard of Municipal Wastewater Treatment Plant Pollutant

Discharge Standard (GB118-2002). This paper introduces the design parameters of sewage and sludge

treatment technologies, and the main treatment structures of this WWTP, and summarizes the engineering

characteristics.Keywords： industry zone, underground wastewater treatment plant, A/A/0 technology, MBREffect of Effective Volume of Catchment Pool of Waterlogging Control Pumping Station on Waterlogging of Urban

Underpass Tunnel ............................................................................................................................... Zhang Zehui ( 78 )Abstract： Firstly, this paper analyses the main causes of waterlogging in urban underpass tunnel and its

impact probability, then expounds the effect of the effective volume of the catchment pool of waterlogging

control pumping station on the waterlogging risk in the urban underpass tunnel, and finally illustrates the important role of improving the effective volume of the catchment pool of waterproof pumping station to prevent the waterlogging in the urban underpass tunnel through practical examples.Keywords： waterlogging control pumping station, catchment pool, effective volume, urban underpass tunnel,

waterloggingResearch on Detailed Planning Methods for Utilization of Urban Riverside Coastlines Oriented to Ecological

Development ............................................................................................................................................. Wu Lian ( 83 )Abstract： The urban riverside coastline is an important resource that is scarce and non-renewahle in the city.

In order to realize the sustainable utilization and ecological development of coastline resource, the planning and

control of coastline resource must be done well. On the basis of the analysis on the functional classification,

section and scope of riverside coastlines, this paper puts forward the detailed control method of utilizing the urban riverside coastline. The combination of \"line-point-surface\" is adopted, and the river blue lines and

water level lines are used as the benchmark. The intersection point of the coastline function section from the

end point to the baseline is used as the reference point The area enclosed by the reference points serves as the

control range corresponding to each type of coastline. The whole coastline is planned and controlled in the form

of \"general map + plan\ and the plan location, coastline function, coastline information, control requirements and detailed contents are determined in each sub-plan. Taking the riverside coastline of Nanjing as an

example, this paper studies the functional distribution and planning control of the riverside coastline utilization in the whole city by this method. The research results have the positive significance for the coordination of urban riverside coastline utilization and the land urban function, and the subsequent overall planning management of the relevant departments.Keywords： riverside coastline utilization, ecological development, detailed control, river blue lines, water

level lines