高密度澄清池.doc

1 densadeg clarifier 高高 密密 度度 澄澄 清清 池池 an extremely dense and homogenous floc 高度密集而且均匀的矾花 optimized flocculation reaction 最优化的絮凝反应 a high settling rate 极高的沉淀速率 a high degree of facility compactness 高度紧凑的结构 perfectly controlled recirculation flow 完美的回流控制 virtually ultimate sludge thickening 彻底的污泥浓缩 sludge dewatered without any intermediate thickener 污泥脱水无需预浓缩 excellent clarified water quality 卓越的出水水质 low sensitivity to loading and flow rate fluctuations 耐负荷及流量变化冲击 contents 目录 general introduction 简介简介 35 propose of settling沉淀目的 35 lamellae settling斜管沉淀 35 densadeg briefing高密度澄清池简介 36 integrated flocculation zone集成式絮凝区 36 settling zone沉淀区 36 sludge thickening zone污泥浓缩区 37 details of densadeg高密度澄清池详述 37 sketch of densadeg高密池简图 37 process composition工艺组成 38 flash mixing tank快速搅拌池 38 reactor tank反应池 39 reactor turbine speed反应池搅拌器速度 39 sludge recirculation污泥回流 40 settling tank沉淀池 40 design brief 设计简介设计简介 41 process flow工艺流程 41 design parameters设计参数 41 reactors反应池 41 settling tanks沉淀池 41 clarified water collection troughs集水槽 42 oil skimmer 撇油器 42 grease tanks浮油池 42 sludge recirculation pump污泥回流泵 42 sludge extraction pump污泥排放泵 43 standby sludge pump备用污泥泵 43 post coagulation后混凝 43 design for automation自动化设计 43 lime dosing石灰投加 43 coagulant dosing混凝剂投加 43 flocculant dosing絮凝剂投加 44 sulfuric acid dosing硫酸投加 44 start stop of reactor agitators反应池搅拌器的启停 44 start stop of sludge scrapers刮泥机的启停 44 sludge recirculation污泥回流 44 sludge extraction污泥排放 44 scum removal浮渣去除 44 start stop of post coagulation agitators后混凝搅拌器的启停 45 design for safety安全设计 45 lack of coagulant or flocculant缺少混凝剂或絮凝剂 45 sludge level in settling tank too high沉淀区泥位过高 45 sludge level in settling tank too low沉淀区泥位过低 45 torque on sludge scraper drive too high刮泥机驱动器扭矩过高 45 level in oil storage tank too high储油池液位过高 45 poor treatment quality处理效果差 46 main equipment 主要设备主要设备 47 flocculator反应池 47 isolation of densadeg inlet 高密池进水闸板 47 densadeg clarifier31 高密度澄清池 flocculation turbine絮凝搅拌器 47 densadeg reactor中心导流筒 48 drain valve for flocculation zone絮凝区放空阀 48 clarifier澄清池 49 sludge scraper刮泥机 49 drive unit of sludge scraper刮泥机驱动器 49 lamellar module 斜管 50 outlet trough集水槽 50 drain for densadeg高密池放空阀 50 partial drain for densadeg高密池部分放空阀 51 sludge recirculation the resultant floc has a high level density then water slowly transfers to the settling tank to maintain floc integrity 在第二个区域中进行慢速絮凝 生成的矾花具有较高的密度 然后水慢速流至 沉淀区以保证矾花的完整性 settling zone沉淀区沉淀区 it is composed of 2 settling sub zones 沉淀区由两部分组成 hindered settling beneath the lamellar most of the floc settles in this area 斜管下方的成层沉淀 大部分矾花在此区域中沉淀 backflow lamellar settling settling surface area is increased by using lamellar hexagonal modules used to operate at high velocities the residual floc is removed in this module producing the final quality water 斜管澄清模块 使用斜管增大了沉淀面积 用于高速运行 在这个模块中 残留的矾花被去除并生产合格的出水 sludge thickening zone污泥浓缩区污泥浓缩区 floc accumulates in the base of the settling tank where it thickens in two superimposed bands limited by the recirculation cone 矾花沉积在沉淀池底部 并在那里由于回流锥的限制分两层进行 浓缩 upper band the recirculated sludge transit and concentration zone where the sludge remains for several hours 上层 回流污泥通过浓缩区并停留几个小时 lower band final sludge thickening before blowdown extraction contact time of approximately one week 下层 在排泥前进行最终的浓缩 停留时间大约为一周 sludge is collected by gravity or by a skimmer system equipped with a picket fence in order to promote thickening a positive displacement pump then routes the sludge to the flocculation zone inlet 污泥通过重力或一个带有篱栅的刮泥机收集起来 一台螺杆泵将部分污泥回流至絮 凝区 details of densadeg高密度澄清池详述高密度澄清池详述 sketch of densadeg高密池简图高密池简图 a 12 3 4 5 b 6 cd 7 densadeg clarifier35 高密度澄清池 1coagulant injection 混凝剂投加7outlet channel 出水渠 2flocculant injection 絮凝剂投加araw water inlet 原水进水 3reactor 反应池bclarified water outlet 澄清水出水 4lamella 斜管csludge recirculation 污泥回流 5outlet troughs 澄清水槽dsludge extraction 污泥排放 6picket fence 栅形刮泥机 process composition工艺组成工艺组成 a densadeg system is generally composed of following parts 高密度澄清池系统通常包括以下几个部分 flash mixing tank with coagulant injection upstream to densadeg 高密池上游带有混凝剂投加的快速搅拌池 reactor with a polymer injection and sludge recirculation 带有聚合物投加和污泥回流功能的反应池 settling tank with lamellar modules 配备斜管模块的沉淀池 sludge thickening tank with sludge scrapper 配备刮泥机的污泥浓缩池 clarified water collecting troughs and channels 澄清水的集水槽及水渠 sludge recirculation and extraction system 污泥回流和排放系统 control system with sludge level monitoring 带有泥位检测的控制系统 flash mixing tank with post coagulant injection if filters installed downstream 如果后续工艺中包括滤池 还应设置带有后混凝剂投加点的快速混合池 sludge tank to store the sludge extracted from the bottom of densadeg tanks 存放从高密度澄清池底部排出的污泥的储泥池 flash mixing tank快速搅拌池快速搅拌池 the raw water goes firstly into the flash mixing tank and contact with coagulant and lime for coagulation and decarbonation a flashing mixer is continuously running in order to help coagulation and lime softening and prevent floc from settling a dosing pump one on duty one as standby injects coagulant into the inlet of tank another dosing pump one on duty one as standby injects lime into the incoming channel of tank the pumps are controlled by frequency converters according to raw water flow and desired dosing rates 原水首先流入快速搅拌池 与混凝剂及石灰接触后进行混凝 一台快速搅拌器连续 运行 以帮助混凝和碱度去除反应并避免矾花沉淀 一台投加泵 一用一备 将混 凝剂投加到快速搅拌池入口 另一台加药泵 一用一备 将石灰投加到快速搅拌池 进口渠道 通过变频器按照原水流量和需要的投加浓度来控制加药泵的运行 reactor tank反应池反应池 the reactor module is a very important part of densadeg system which determines the results of water and sludge treatment the adjustment must be done perfectly in the reactor 在高密度澄清池系统中 反应池模块是非常重要的部分 因为该模块决定了水和污 泥处理的效果 所以反应池必须合理地调整 the doses of chemicals depend on the nature of raw water the concentration of suspended solids and products of softening this rate must be determined with the most concentrated inlet water by jar test see protocol for jar test following parameters shall be controlled during the jar test 药剂的投加量取决于原水的性质 悬浮固体物浓度及软化反应的产物 投加量必须 按照浓度最高的进水通过烧杯试验来确定 请参考 烧杯试验 一文 试验中需控 制以下参数 temperature ph turbidity ss color alkalinity etc of raw water 原水的温度 ph 浊度 固体悬浮物 色度 碱度等 optimal ph 最佳 ph 值 optimal doses of reagents 最佳投药量 sludge production 产泥量 reactor turbine speed反应池搅拌器速度反应池搅拌器速度 the rotation speed of turbine is designed to ensure a good mixing of the polymer and a good flocculation if the rotation speed is too high the flocs run the risk of breaking too low sludge may settle down inside the reactor 搅拌器的转速应确保聚合物搅拌充足和絮凝良好 如果转速过高 那么矾花就有被 打碎的危险 太低则有污泥在反应区内沉淀的危险 sludge recirculation污泥回流污泥回流 the purpose of the sludge recycling is to improve the floc growth and to increase the density of the floc densadeg clarifier37 高密度澄清池 污泥回流的目的在于加速矾花的生长以及增加矾花的密度 settling tank沉淀池沉淀池 the settling tank is a very important part of the system in which most of the floc settles and thickens thickening is promoted by continuous scraping of the precipitated sludge part of the sludge is recirculated into the reactor this perfectly controlled external sludge recirculation is designed to maintain the high sludge concentration required for homogeneous flocculation lamella modules are located at the top of the tank in which the residual floc are removed and the final qualified water is produced 沉淀池是高密度澄清池系统中重要的部分 大部分矾花就在这里沉淀和浓缩 连续 刮扫促进了沉淀污泥的浓缩 部分污泥回流到反应池中 这种精确控制的外部污泥 回流用来维持均匀絮凝所要求的高污泥浓度 斜板模块放置在沉淀池的顶部 用于 去除残留的矾花和产生最终合格的水 chapter 2 第 2 章 design brief 设计简介设计简介 process flow工艺流程工艺流程 raw water with coagulant and lime added firstly goes into the reactors in where flocculation and removal of temporary hardness occurs and then into the settling zone for separation the residual floc are removed in lamellar modules and the final qualified water is produced 投加了混凝剂和石灰的原水先流入反应池中 在该池中进行絮凝反应和暂时硬度的 去除 然后进入沉淀区进行泥水分离 残留的矾花将在斜管中去除并产生最终合格 的出水 part of settled sludge is recycled to the reactor by an external pump the extra sludge pre thickened at the bottom of settling zone is evacuated to sludge storage tank through another pump 部分沉淀的污泥通过一台外置的泵循环到反应池 在沉淀区底部浓缩了的剩余污泥 通过另一台泵输送至储泥池 design parameters设计参数设计参数 flow rate 流量 72 000 m3 d number of densadegs 高密池数量 2 unit capacity 单位能力 1550 m3 h reactors反应池反应池 number of chambers 池子数量 2 unit volume 单位容积 273 m3 retention time 停留时间 10 6 min max dissipated power 最大搅拌能量 10 1 wh m3 settling tanks沉淀池沉淀池 number of tanks 池子数量 3 unit settling area 单位沉淀面积 190 m2 unit lamella area 单位斜管面积 118 m2 2 densadeg clarifier39 高密度澄清池 design up flow rate 设计上升流速 13 1 m h type of lamella 斜管型号 dh80 clarified water collection troughs集水槽集水槽 number of troughs 数量 2 x 14 size of the trough 尺寸 6000 x 300 x 350 mm number of notches 槽口数量 8 m water head on the notch 槽上水头 36 mm water drop of collection canal 出水渠跌水 366 mm oil skimmer 撇油器撇油器 type 型号 manual 手动 number per tank 每池数量 2 supplier model tangshan yuqing length 长度 6 m flow rate 流量 39 m3 h each time discharge flow 单次排放量 1 9 m3 3 min discharge pipe 排放管 dn100 v 1 50 m s rfc 007 grease tanks浮油池浮油池 number 数量 1 unit volume 单位容积 2 3 m3 scum pumps 浮渣泵 10 m3 h sludge recirculation pump污泥回流泵污泥回流泵 number of pumps 泵数量 1 x 2 unit flow 单位流量 60 m3 h max recirculation 最大回流量 4 nominal recirculation 正常回流量 2 adjustment 流量调节 f converter 变频器 sludge extraction pump污泥排放泵污泥排放泵 number of pumps 泵数量 1 x 2 unit flow 单位流量 60 m3 h adjustment 流量调节 fixed 定速 standby sludge pump备用污泥泵备用污泥泵 number of pumps 泵数量 1 x 2 unit flow 单位流量 60 m3 h adjustment 流量调节 f converter 变频器 post coagulation后混凝后混凝 number of tank 池子数量 1 volume of tank 容积 27 m3 retention time 停留时间 30 s velocity gradient required 速度梯度 g 240 s 1 power input 输入功率 2 2 kw design for automation自动化设计自动化设计 lime dosing石灰投加石灰投加 the speed of lime dosing pumps is automatically controlled by plc according to raw water flow rate the desired dosing rate and the preparation concentration of lime emulsion plc 根据原水流量 所需要的投加浓度及石灰乳液的配制浓度自动控制石灰投加泵 的转速 coagulant dosing混凝剂投加混凝剂投加 the speed of coagulant dosing pumps is automatically controlled by plc according to raw water flow rate the desired dosing rate the preparation concentration and the setting of manual stock controllers plc 根据原水流量 所需要的投加浓度 药剂的配制浓度及手动冲程控制器的设定 值自动控制混凝剂投加泵的转速 densadeg clarifier41 高密度澄清池 flocculant dosing絮凝剂投加絮凝剂投加 the speed of flocculant dosing pumps is automatically controlled by plc according to raw water flow rate the desired dosing rate the preparation concentration and the number of densadegs in operation plc 根据原水流量 所需要的投加浓度 药剂的配制浓度及处于运行状态的高密池 的数量自动控制絮凝剂投加泵的转速 sulfuric acid dosing硫酸投加硫酸投加 the speed of sulfuric acid dosing pumps is automatically controlled by plc according to raw water flow rate and the desired dosing rate or the ph value feedback of neutralized water plc 根据原水流量及所需要的投加浓度或中和后的水的 ph 值反馈自动控制硫酸投 加泵的转速 start stop of reactor agitators反应池搅拌器的启停反应池搅拌器的启停 the agitators in densadeg reactors can automatically start or stop controlled by plc according to raw water flow rate and the status of densadegs plc 根据原水流量及高密池的状态自动控制高密池反应池搅拌器的启停 start stop of sludge scrapers刮泥机的启停刮泥机的启停 the sludge scrapers in densadeg settling tanks can automatically start or stop according to the status of densadegs 高密池沉淀区的刮泥机可以根据高密池的状态自动启停 sludge recirculation污泥回流污泥回流 the sludge recirculation pumps can automatically start or stop according to the status of densadegs and the frequency is automatically controlled by plc according to raw water flow rate 高密池的回流污泥泵可以根据高密池的状态自动启停 并且 plc 根据原水流量自 动调节频率 sludge extraction污泥排放污泥排放 the sludge extraction pumps are automatically controlled according to the accumulated water volume flowing through densadeg and the sludge level in settling tanks 高密池的排放污泥泵可以根据流经高密池的累积水量及沉淀区的泥位高度自动控制 scum removal浮渣去除浮渣去除 two level switches are installed inside oil storage tank for level control the start and stop of scum pump is automatically controlled accordingly 储油池中装有两个用于控制液位的液位开关 浮渣泵会根据液位的变化自动进行启 动和停止 start stop of post coagulation agitators后混凝搅拌器的启停后混凝搅拌器的启停 the agitators in post coagulation tank can automatically start or stop controlled by plc according to raw water flow rate plc 根据原水流量自动控制后混凝反应池搅拌器的启停 design for safety安全设计安全设计 lack of coagulant or flocculant缺少混凝剂或絮凝剂缺少混凝剂或絮凝剂 densadeg will automatically stop and alarms will be triggered if the corresponding coagulant or flocculant dosing pumps break down 当混凝剂或絮凝剂投加泵发生故障并对高密池的运行造成影响时 高密池将自动停 止运行并产生报警 sludge level in settling tank too high沉淀区泥位过高沉淀区泥位过高 the sludge extraction pump will be automatically forced to start and the sludge extraction will be automatically accelerated if the sludge level in densadeg s settling tank is too high therefore continuous sludge level increasing is avoided 当高密池沉淀区的泥位过高时 污泥排放泵将自动强制启动 污泥排放将自动加速 因此 可以避免泥位的持续升高 sludge level in settling tank too low沉淀区泥位过低沉淀区泥位过低 the sludge extraction pump will be automatically forced to stop and the sludge extraction will be automatically decelerated if the sludge level in densadeg s settling tank is too low therefore continuous sludge level decreasing is avoided 当高密池沉淀区的泥位过低时 污泥排放泵将自动强制停止 污泥排放将自动减速 因此 可以避免泥位的持续降低 torque on sludge scraper drive too high刮泥机驱动器扭矩过高刮泥机驱动器扭矩过高 the sludge extraction pump will be automatically forced to start and the sludge extraction will be automatically accelerated if the torque on sludge scraper drive reaches the first setpoint therefore undesired high torque on sludge scraper drive is avoided 当刮泥机驱动器的扭矩达到第一个设定值时 污泥排放泵将自动强制启动 污泥排 放将自动加速 因此 可以避免刮泥机驱动器的扭矩过高 densadeg will be automatically forced to stop if the torque on sludge scraper drive reaches the second setpoint therefore damage of sludge scraper drive is avoided 当刮泥机驱动器的扭矩达到第二个设定值时 高密池将停止运行 因此 可以避免 刮泥机损坏 level in oil storage tank too high储油池液位过高储油池液位过高 a high level switch is installed in the oil storage tank an alarm will be triggered if the level in oil tank is too high densadeg clarifier43 高密度澄清池 储油池中安装有一个高液位开关 当储油池液位过高时 将产生一个报警 poor treatment quality处理效果差处理效果差 the ss of clarified water is continuously measured an alarm will be triggered when the turbidity is greater than the set value 连续测量澄清水的 ss 当浊度高于设定值时将产生报警 chapter 3 第 3 章 main equipment 主要设备主要设备 flocculator反应池反应池 isolation of densadeg inlet 高密池进水闸板高密池进水闸板 number 数量 2 mark 编号 v202a b supplier 供货商 anhui tongdu type 型号 sfz 600 x 600 opening size 开口尺寸 600 x 600 operating pressure 操作压力 10 mwc drive system 驱动方式 hand wheel 手轮 flocculation turbine絮凝搅拌器絮凝搅拌器 number 数量 2 mark 编号 a202a b c supplier 供货商 dosapro module 型号 hm3000b380 diameter 直径 3000 mm shaft length 轴长度 3900 mm type 类型 lift 提升 flow rate 流量 32172 m3 h absorbed power 吸收功率 20 84 kw material 材质 ss 304l rotation speed 转速 3 8 23 2 rpm motor配套电机 3 densadeg clarifier45 高密度澄清池 supplier 供货商 sermes module 型号 180l4 supply voltage 电压 380vac nominal frequency 额定频率 50 hz rated power 额定功率 22 kw nominal current 额定电流 46 a starting current 启动电流 276 a cos 0 82 rotation speed 转速 1465 rpm insulation class 绝缘等级 f protection index 保护等级 ip55 duty 工作制 s1 densadeg reactor中心导流筒中心导流筒 number 数量 2 mark 编号 x202a b supplier 供货商 tangshan yuqing diameter 直径 3050 mm drain valve for flocculation zone絮凝区放空阀絮凝区放空阀 number 数量 2 mark 编号 v203a b supplier 供货商 anhui tongdu module 型号 z45t 10 diameter 直径 dn150 type 类型 gate 闸阀 pressure 压力 pn10 connection 连接 pn10 flange 法兰 clarifier澄清池澄清池 sludge scraper刮泥机刮泥机 number 数量 2 mark 编号 x205a b supplier 供货商 tangshan yuqing dimension 尺寸 13 8 m drive unit of sludge scraper刮泥机驱动器刮泥机驱动器 number 数量 2 mark 编号 a203a b supplier 供货商 s c m c module 型号 ph9 motor配套电机 manufacturer 供货商 simetra flender module 型号 a90l4 supply voltage 电压 380vac rated power 额定功率 1 5 kw nominal frequency 额定频率 50 hz nominal current 额定电流 3 7 a rotation speed 转速 1450 rpm gearbox减速机 manufacturer 供货商 simetra flender module 型号 cfa 200 df 61 l 15 rotation speed 转速 0 12 0 6 rpm gear ring齿盘 type 形式 rollix type densadeg clarifier47 高密度澄清池 module 型号 06 1250 07 zz 10 a protection 保护 grease 黄油 torque limiter扭矩开关 module 型号 dac2 nde 1st threshold tag wsh1 第一限值 1330 m dan 2nd threshold tag wsh2 第二限值 2000 m dan lamellar module 斜管斜管 supplier 供货商 chengdu jinquan shape 形状 hexagonal 六角型 diameter of inscribed circle 内园直径 80 mm length 长度 1500 mm height 高度 1300 mm angle 角度 60 material 材质 pp 聚丙烯 thickness of sheet 片厚度 1 3 mm outlet trough集水槽集水槽 number 数量 42 supplier 供货商 chengdu jinquan dimension 尺寸 6200 x300 x300 x3 mm material 材质 ss 304 drain for densadeg高密池放空阀高密池放空阀 number 数量 2 mark 编号 v205a b supplier 供货商 anhui tongdu module 型号 z45t 10 diameter 直径 dn150 type 类型 gate 闸阀 pressure 压力 pn10 connection 连接 pn10 flange 法兰 body material 阀体材质 cast iron 铸铁 disc material 阀盘材质 cast iron 铸铁 shaft material 轴材质 2cr13 seat material 阀座材质 bronze 青铜 partial drain for densadeg高密池部分放空阀高密池部分放空阀 number 数量 2 mark 编号 v204a b supplier 供货商 tanggu watts module 型号 d37a1x 10 diameter 直径 dn150 type 类型 butterfly 蝶阀 pressure 压力 pn10 connection 连接 pn10 flange 法兰 body material 阀体材质 cast iron 铸铁 disc material 阀盘材质 cast iron 铸铁 shaft material 轴材质 2cr13 seat material 阀座材质 bronze 青铜 sludge recirculation extraction污泥回流和排放污泥回流和排放 sludge recirculation pump回流污泥泵回流污泥泵 number 数量 2 mark 编号 p201a1 b1 supplier 供货商 seepex densadeg clarifier49 高密度澄清池 module 型号 bn 100 6l nominal flow 额定流量 60 m3 h flow 流量 12 72 m3 h pump speed 泵转速 44 241 rpm delivery pressure 出口压力 20 mwc npshr 3 73 suction port 吸口 dn150 pn16 discharge port 出口 dn150 pn16 shaft power 轴功率 7 6 kw shaft sealing 轴封 mech 机械密封 flow adjustment 流量调节 freq inverter 变频器 motor配套电机 module 型号 seepex supply voltage 电压 380vac nominal frequency 额定频率 50 hz rated power 额定功率 11 kw nominal current 额定电流 21 a starting current 启动电流 147 a cos 0 84 rotation speed 转速 1460 rpm insulation class 绝缘等级 f protection index 保护等级 ip55 duty 工作制 s1 sludge extraction pump污泥排放泵污泥排放泵 number 数量 2 mark 编号 p201a2 b2 supplier 供货商 seepex module 型号 bn100 6l nominal flow 额定流量 60 m3 h pump speed 泵转速 209 rpm delivery pressure 出口压力 20 mwc npshr 3 73 suction port 吸口 dn150 pn16 discharge port 出口 dn150 pn16 shaft power 轴功率 6 6 kw shaft sealing 轴封 mech 机械密封 flow adjustment 流量调节 fixed 定速 motor配套电机 module 型号 seepex supply voltage 电压 380vac nominal frequency 额定频率 50 hz rated power 额定功率 7 5 kw nominal current 额定电流 15 8 a starting current 启动电流 58 46 a cos 0 82 rotation speed 转速 1440 rpm insulation class 绝缘等级 f protection index 保护等级 ip55 duty 工作制 s1 standby sludge pump备用污泥泵备用污泥泵 number 数量 1 mark 编号 p201c densadeg clarifier51 高密度澄清池 supp