CN204824453U - Desulfurization pretreatment of water device that gives up - Google Patents
Desulfurization pretreatment of water device that gives up Download PDFInfo
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Abstract
一种脱硫废水预处理装置，包括依次相连的曝气调节池(1)、pH调节箱(2)、一级反应沉降箱(3)、一级絮凝箱(4)、一级澄清池(5)；二级反应沉降箱(6)、二级絮凝箱(7)、二级澄清池(8)、中间水池(9)、多介质过滤器(10)，其中，曝气调节池设置超声波液位计，底部设置曝气装置；pH调节箱、一级反应沉降箱，一级絮凝箱、二级反应沉降箱、二级絮凝箱均设有加药机构；还设有污泥平衡池，一级澄清池、二级澄清池的池底设有管道连接污泥平衡池(11)；一级澄清池、二级澄清池、污泥平衡池设置泥位计。本实用新型对脱硫废水进行氧化、中和、重金属离子去除、絮凝沉降、澄清、过滤。
A desulfurization wastewater pretreatment device, comprising an aeration adjustment tank (1), a pH adjustment tank (2), a primary reaction settling tank (3), a primary flocculation tank (4), and a primary clarification tank (5) connected in sequence ); secondary reaction settling tank (6), secondary flocculation tank (7), secondary clarification tank (8), intermediate pool (9), multimedia filter (10), wherein, the aeration regulating tank is provided with ultrasonic liquid Level meter, aeration device is set at the bottom; pH adjustment box, primary reaction settling box, primary flocculation box, secondary reaction settling box, secondary flocculation box are all equipped with dosing mechanism; there is also a sludge balance tank, a The bottom of the primary clarifier and the secondary clarifier are provided with pipes connected to the sludge balance tank (11); the primary clarifier, the secondary clarifier and the sludge balance tank are provided with mud level gauges. The utility model oxidizes, neutralizes, removes heavy metal ions, flocculates and settles, clarifies and filters desulfurization wastewater.
Description
一、技术领域 1. Technical field
本实用新型属于水处理技术领域，具体涉及一种火力发电厂脱硫废水预处理装置。 The utility model belongs to the technical field of water treatment, in particular to a desulfurization waste water pretreatment device of a thermal power plant.
二、背景技术 2. Background technology
随着我国能源工业的迅速发展和大型燃煤电厂的兴建，燃料用量不断增加，SO2的排放量越来越多。目前烟气脱硫被认为是控制SO2排放量最行之有效的途径。石灰石-石膏湿式烟气脱硫是世界上应用最多、技术最成熟的脱硫工艺。石灰石-石膏湿法产生的脱硫废水，其pH为4～6，含有大量的悬浮物(石膏颗粒、SiO2、Al和Fe的氢氧化物)、氟化物和多种重金属离子(As、Cd、Cr、Hg等)，硬度高，含盐量大。直接排放将对环境造成严重危害，因而必须对其加以治理。 With the rapid development of China's energy industry and the construction of large-scale coal-fired power plants, fuel consumption is increasing, and SO 2 emissions are increasing. Currently flue gas desulfurization is considered to be the most effective way to control SO 2 emissions. Limestone-gypsum wet flue gas desulfurization is the most widely used and most mature desulfurization process in the world. The desulfurization wastewater produced by limestone-gypsum wet process has a pH of 4-6 and contains a large amount of suspended solids (gypsum particles, SiO 2 , hydroxides of Al and Fe), fluorides and various heavy metal ions (As, Cd, Cr, Hg, etc.), high hardness, high salt content. Direct discharge will cause serious harm to the environment, so it must be controlled.
同时，随着水资源日益匮乏，对水体污染的控制标准将越来越严格。为实现水资源的循环利用和节能减排，从可持续发展的观点看，废水(包括脱硫废水类高盐量废水)的回收及零排放是电厂用水发展的必然趋势。目前对于电厂脱硫废水的处理方法主要有化学软化+超滤+反渗透、化学软化+多效蒸发，两种处理方法都要求对脱硫废水进行预处理。 At the same time, with the increasing scarcity of water resources, the control standards for water pollution will become more and more stringent. In order to achieve recycling of water resources and energy saving and emission reduction, from the perspective of sustainable development, the recycling and zero discharge of wastewater (including desulfurization wastewater with high salinity wastewater) is an inevitable trend in the development of power plant water use. At present, the treatment methods for desulfurization wastewater in power plants mainly include chemical softening + ultrafiltration + reverse osmosis, chemical softening + multi-effect evaporation, both of which require pretreatment of desulfurization wastewater.
脱硫废水预处理是实现火力发电厂废水回用与零排放的重要组成部分。脱硫废水预处理装置主要去除的物质是重金属离子、氟化物和悬浮物和硬度等。目前脱硫废水处理装置一般采用中和箱、混凝箱和沉降箱，这类技术处理效率不高，对进水水质变化的适应性较差，出水水质不稳定，难以达到后续回用处理工艺的进水要求。 Pretreatment of desulfurization wastewater is an important part of realizing wastewater reuse and zero discharge in thermal power plants. The main substances removed by the desulfurization wastewater pretreatment device are heavy metal ions, fluoride, suspended solids and hardness. At present, desulfurization wastewater treatment devices generally use neutralization tanks, coagulation tanks, and settling tanks. These technologies have low treatment efficiency, poor adaptability to changes in influent water quality, and unstable effluent water quality. It is difficult to achieve the follow-up reuse treatment process. Water requirements.
三、实用新型内容 3. Contents of utility model
本实用新型的目的是，提供一种反应充分稳定、设备自动化程度高、处理高效的脱硫废水预处理装置，不仅能够处理废水中各种污染，减少加药量和污泥量，并且能满足后续回用工艺进水要求。 The purpose of this utility model is to provide a desulfurization wastewater pretreatment device with sufficient and stable reaction, high degree of equipment automation, and efficient treatment. Water requirements for reuse process.
本实用新型的技术方案是：一种脱硫废水预处理装置，包括依次相连的曝气调节池1、pH调节箱2、一级反应沉降箱3、一级絮凝箱4、一级澄清池5；二级反应沉降箱6、二级絮凝箱7、二级澄清池8、中间水池9、多介质过滤器10，其中，曝气调节池1设置超声波液位计，底部设置曝气装置；pH调节箱2、一级反应沉降箱3、一级絮凝箱4、二级反应沉降箱6、二级絮凝箱7均设有加药机构；还设有污泥平衡池11，一级澄清池5、二级澄清池8的池底设有管道连接污泥平衡池11；一级澄清池5、二级澄清池8、污泥平衡池11设置泥位计。 The technical solution of the utility model is: a desulfurization wastewater pretreatment device, including an aeration adjustment tank 1, a pH adjustment tank 2, a primary reaction settling tank 3, a primary flocculation tank 4, and a primary clarification tank 5 connected in sequence; The secondary reaction settling tank 6, the secondary flocculation tank 7, the secondary clarification tank 8, the intermediate tank 9, and the multimedia filter 10, wherein, the aeration regulating tank 1 is provided with an ultrasonic level gauge, and an aeration device is provided at the bottom; pH adjustment Box 2, first-level reaction settling box 3, first-level flocculation box 4, second-level reaction settling box 6, and second-level flocculation box 7 are all equipped with dosing mechanisms; there are also sludge balance tanks 11, first-level clarification tanks 5, The bottom of the secondary clarifier 8 is provided with a pipeline connected to the sludge balance tank 11; the primary clarifier 5, the secondary clarifier 8, and the sludge balance tank 11 are provided with mud level gauges.
污泥平衡池11后设有泥水分离的板框压滤机12。 After the sludge balance tank 11, there is a plate-and-frame filter press 12 for mud-water separation.
本实用新型脱硫废水预处理装置，包括一级处理装置、二级处理装置、污泥脱水装置和加药装置；pH调节箱2、一级反应沉降箱3、一级絮凝箱(分两格)4、二级反应沉降箱6，二级絮凝箱(分两格)7设置搅拌装置；一级澄清池5、二级澄清池8设置刮泥装置；曝气调节池1设置超声波液位计，底部设置曝气装置；pH调节池2、二级反应沉降箱6和多介质过滤器10安装pH计；一级澄清池5、二级澄清池8出口设置浊度计；多介质过滤器10设置压差计。 The utility model desulfurization wastewater pretreatment device includes a primary treatment device, a secondary treatment device, a sludge dehydration device and a dosing device; a pH adjustment box 2, a primary reaction settling box 3, and a primary flocculation box (divided into two compartments) 4. The secondary reaction settling tank 6 and the secondary flocculation tank (divided into two compartments) 7 are equipped with stirring devices; the primary clarification tank 5 and the secondary clarification tank 8 are equipped with mud scraping devices; the aeration regulating tank 1 is equipped with an ultrasonic liquid level gauge, An aeration device is arranged at the bottom; a pH meter is installed in the pH adjustment tank 2, a secondary reaction settling tank 6 and a multimedia filter 10; Differential Pressure Gauge.
一级处理装置的主要作用是去除脱硫废水中的悬浮物、重金属离子和镁离子，包括曝气调节池、pH调节箱、一级反应沉降箱、一级絮凝箱、一级澄清池。二级处理装置的主要作用是去除脱硫废水中的钙、镁离子，包括二级反应沉降箱、二级絮凝箱、二级澄清池、中间水池、多介质过滤器。 The main function of the primary treatment device is to remove suspended solids, heavy metal ions and magnesium ions in desulfurization wastewater, including aeration adjustment tank, pH adjustment tank, primary reaction settling tank, primary flocculation tank, and primary clarification tank. The main function of the secondary treatment device is to remove calcium and magnesium ions in the desulfurization wastewater, including the secondary reaction settling tank, the secondary flocculation tank, the secondary clarification tank, the intermediate pool, and the multi-media filter.
pH调节箱、一级反应沉降箱、一级絮凝箱、二级反应沉降箱、二级絮凝箱设置搅拌器，控制搅拌强度实现充分的反应。 The pH adjustment box, the primary reaction settling box, the primary flocculation box, the secondary reaction settling box, and the secondary flocculation box are equipped with agitators to control the stirring intensity to achieve sufficient reaction.
pH调节箱、二级反应沉降箱、中间水池设置pH计，用于监测废水pH。 The pH adjustment box, the secondary reaction settling box, and the intermediate pool are equipped with pH meters to monitor the pH of the wastewater.
一级澄清池、二级澄清池设置机械刮泥装置，并设置泥位计。二级澄清池设置污泥回流装置，回流部分污泥至二级反应沉降箱强化反应效果，澄清池的泥浆高度由泥位计进行监测，当超过设定范围时，澄清池底部的排泥阀开启，泥浆自流进入污泥平衡池。一级澄清池出水管路、多介质过滤出水管路设置浊度监测装置，用于监测一级澄清池和多介质过滤器产水的浊度。 The primary clarifier and the secondary clarifier are equipped with mechanical mud scraping devices and mud level gauges. The secondary clarifier is equipped with a sludge return device to return part of the sludge to the secondary reaction settling box to enhance the reaction effect. The mud height of the clarifier is monitored by a mud level gauge. When it exceeds the set range, the sludge discharge valve at the bottom of the clarifier When it is turned on, the mud flows into the sludge balance tank by itself. The turbidity monitoring device is installed in the outlet pipeline of the primary clarifier and the outlet pipeline of the multimedia filter, which is used to monitor the turbidity of the water produced in the primary clarifier and the multimedia filter.
污泥脱水装置包括污泥平衡池、板框脱水机。加药装置包括石灰加药装置、有机硫加药装置、氢氧化钠加药装置、混凝剂加药装置、助凝剂加药装置、纯碱加药装置、盐酸加药装置。 The sludge dewatering device includes a sludge balance tank and a plate and frame dehydrator. Dosing devices include lime dosing device, organic sulfur dosing device, sodium hydroxide dosing device, coagulant dosing device, coagulant aid dosing device, soda ash dosing device, hydrochloric acid dosing device.
本实用新型方案中，调节池设置曝气装置，通过曝气调节水质，保证脱硫废水预处理装置稳定运行，同时可以将脱硫废水中的亚硫酸根离子氧化为硫酸根离子，降低脱硫废水COD。 In the proposal of the utility model, the regulating tank is provided with an aeration device, through which the water quality is adjusted to ensure the stable operation of the desulfurization wastewater pretreatment device, and at the same time, the sulfite ions in the desulfurization wastewater can be oxidized to sulfate ions to reduce the COD of the desulfurization wastewater.
污泥平衡池设置泥位计，达到设定值时，污泥泵自动开启，将污泥输送至板框压滤机进行脱水，脱水后的泥饼用作脱硫剂或外运处置，上清液回至调节曝气池再次处理。 The sludge balance tank is equipped with a mud level gauge. When the set value is reached, the sludge pump will automatically start, and the sludge will be transported to the plate and frame filter press for dehydration. The liquid is returned to the adjusted aeration tank for further processing.
加药装置放置在加药间内。脱硫废水预处理系统加入的药剂主要包括石灰乳、有机硫、氢氧化钠、盐酸、混凝剂、助凝剂、纯碱。 The dosing device is placed in the dosing room. The chemicals added to the desulfurization wastewater pretreatment system mainly include milk of lime, organic sulfur, sodium hydroxide, hydrochloric acid, coagulant, coagulant aid, and soda ash.
预处理装置主要作用包括对脱硫废水进行氧化、中和、重金属离子去除、絮凝沉降、澄清、过滤等。曝气调节池底部设置曝气装置，一级澄清池和二级澄清池设置刮泥装置，二级澄清池部分污泥回流至二级反应沉降箱，一级、二级澄清池排泥至污泥平衡池。污泥平衡池设有泥位计，达到设定值时，污泥泵自动开启，将污泥输送至板框压滤机进行脱水，脱水后的泥饼用作脱硫剂或外运处置，上清液回至调节曝气池再次循环处理。自动化程度高，结构简单，对脱硫废水处理效果稳定，出水水质满足后续回用处理工艺的进水要求。 The main functions of the pretreatment device include oxidation, neutralization, removal of heavy metal ions, flocculation and sedimentation, clarification, and filtration of desulfurization wastewater. Aeration devices are installed at the bottom of the aeration adjustment tank, mud scraping devices are installed in the primary and secondary clarification tanks, part of the sludge in the secondary clarification tank is returned to the secondary reaction settling tank, and the sludge in the primary and secondary clarification tanks is discharged to the sewage Mud balance pool. The sludge balance tank is equipped with a mud level gauge. When the set value is reached, the sludge pump will automatically start to transport the sludge to the plate and frame filter press for dehydration. The dehydrated mud cake is used as a desulfurizer or transported outside for disposal. The supernatant is returned to the regulating aeration tank for recirculation. High degree of automation, simple structure, stable desulfurization wastewater treatment effect, and effluent water quality meets the influent requirements of subsequent reuse treatment processes.
本实用新型的有益效果，利用本实用新型的装置可使脱硫废水反应充分稳定，是一种设备自动化程度高、处理高效的脱硫废水预处理装置，不仅能够处理废水中各种污染，减少加药量和污泥量，并且能满足后续回用工艺进水要求。 The beneficial effect of the utility model is that the device of the utility model can make the reaction of the desulfurization wastewater fully stable, and it is a desulfurization wastewater pretreatment device with a high degree of equipment automation and efficient treatment, which can not only treat various pollutions in the wastewater, but also reduce dosing volume and sludge volume, and can meet the water requirements of the subsequent reuse process.
四、附图说明 4. Description of drawings
附图1为本实用新型的结构示意图。 Accompanying drawing 1 is the structural representation of the utility model.
图中：1—曝气调节池，2—pH调节箱，3—一级反应沉降箱，4—一级絮凝箱(分两格)，5—一级澄清池，6—二级反应沉降箱，7—二级絮凝箱(分两格)，8—二级澄清池，9—中间水池，10—多介质过滤器，11—污泥平衡池，12—板框压滤机。 In the figure: 1—aeration adjustment tank, 2—pH adjustment tank, 3—first grade reaction settling tank, 4—first grade flocculation tank (divided into two compartments), 5—first grade clarification tank, 6—second grade reaction settlement tank , 7—secondary flocculation tank (divided into two compartments), 8—secondary clarifier, 9—intermediate pool, 10—multimedia filter, 11—sludge balance tank, 12—plate and frame filter press.
五、具体实施方式 5. Specific implementation
下面结合附图对本实用新型做进一步说明。 Below in conjunction with accompanying drawing, the utility model is further described.
参照图1，一种脱硫废水预处理装置，包括曝气调节池1，pH调节箱2，一级反应沉降箱3，一级絮凝箱(分两格)4，一级澄清池5，二级反应沉降箱6，二级絮凝箱(分两格)7，二级澄清池8，中间水池9，多介质过滤器10，污泥平衡池11，板框压滤机12。其中，pH调节箱2、一级反应沉降箱3，一级絮凝箱(分两格)4、二级反应沉降箱6，二级絮凝箱(分两格)7设置搅拌装置；一级澄清池5、二级澄清池8设置刮泥装置；曝气调节池1设置超声波液位计，底部设置曝气装置；pH调节箱2、二级反应沉降箱6和多介质过滤器10安装pH计；一级澄清池5、二级澄清池8出口设置浊度计；一级澄清池5、二级澄清池8、污泥平衡池11设置泥位计；多介质过滤器10设置压差计。 Referring to Figure 1, a desulfurization wastewater pretreatment device includes an aeration adjustment tank 1, a pH adjustment tank 2, a primary reaction settling tank 3, a primary flocculation tank (divided into two compartments) 4, a primary clarification tank 5, and a secondary Reaction settling tank 6, secondary flocculation tank (divided into two grids) 7, secondary clarification tank 8, intermediate pool 9, multimedia filter 10, sludge balance tank 11, plate and frame filter press 12. Among them, the pH adjustment box 2, the primary reaction settling box 3, the primary flocculation box (divided into two grids) 4, the secondary reaction settling box 6, and the secondary flocculation box (divided into two grids) 7 are provided with stirring devices; the primary clarification tank 5. The secondary clarification tank 8 is equipped with a mud scraping device; the aeration adjustment tank 1 is equipped with an ultrasonic liquid level gauge, and the bottom is equipped with an aeration device; the pH adjustment tank 2, the secondary reaction settling tank 6 and the multimedia filter 10 are equipped with a pH meter; Turbidity meters are installed at the outlets of the primary clarifier 5 and secondary clarifier 8; mud level gauges are provided at the primary clarifier 5, secondary clarifier 8, and sludge balance tank 11; the multi-media filter 10 is provided with a differential pressure gauge.
具体实施时，脱硫废水预处理装置处理废水主要包括以下几个阶段： During specific implementation, the treatment of wastewater by the desulfurization wastewater pretreatment device mainly includes the following stages:
(1)脱硫废水进入曝气调节池1中，在曝气装置作用下，将脱硫废水中的亚硫酸根离子氧化为硫酸根离子，去除部分污染物，降低脱硫废水COD。超声波液位计监测曝气调节池1液位，自动控制废水提升泵运行。脱硫废水通过废水提升泵输送至pH调节箱2。 (1) The desulfurization wastewater enters the aeration regulating tank 1, and under the action of the aeration device, the sulfite ions in the desulfurization wastewater are oxidized to sulfate ions to remove some pollutants and reduce the COD of the desulfurization wastewater. The ultrasonic liquid level gauge monitors the liquid level of the aeration regulating tank 1, and automatically controls the operation of the wastewater lifting pump. The desulfurization wastewater is transported to the pH adjustment tank 2 through the wastewater lift pump.
(2)向pH调节箱2中投加一定量的石灰，并不断搅拌，使pH值调节至9.5±0.2，去除暂硬，氟离子与钙离子生成氟钙沉淀，硫酸根离子与钙离子生成硫酸钙沉淀，并以氢氧化物的形式沉淀出大部分重金属离子。然后流入一级反应箱3。 (2) Add a certain amount of lime to the pH adjustment box 2, and keep stirring to adjust the pH value to 9.5±0.2, remove temporary hardness, fluoride ions and calcium ions form calcium fluoride precipitates, and sulfate ions and calcium ions form Calcium sulfate precipitates and most of the heavy metal ions are precipitated as hydroxides. Then flow into the primary reaction box 3.
(3)在一级反应沉降箱3中，通过加入有机硫进一步沉淀不能以氢氧化物形式沉淀出来的重金属，并加入氢氧化钠溶液，继续提高pH值，以沉淀废水中的镁离子，进一步去除硬度。然后流入一级絮凝箱4。 (3) In the primary reaction settling tank 3, the heavy metals that cannot be precipitated out in the form of hydroxides are further precipitated by adding organic sulfur, and sodium hydroxide solution is added to continue to increase the pH value to precipitate magnesium ions in the waste water, further Remove hardness. Then flow into the primary flocculation box 4.
(4)在一级絮凝箱(分两格)4中，加入混凝剂，使废水中的胶体颗粒脱稳，凝聚形成许多微小絮凝物；加入絮凝剂，使微小絮凝物通过吸附桥架作用形成易于沉降的大颗粒物，便于在后续一级澄清池5中得到分离。 (4) In the primary flocculation box (divided into two compartments) 4, add a coagulant to destabilize the colloidal particles in the wastewater and coagulate to form many tiny flocs; add a flocculant to make the tiny flocs form through the adsorption bridge The large particles that are easy to settle are easy to be separated in the subsequent primary clarifier 5.
(5)一级澄清池5用于对产生的絮凝物以及废水中本身的悬浮物进行沉淀分离，上清液自流至二级反应沉降箱6。一级澄清池5的泥浆高度由泥位计进行监测，当超过设定范围时，一级澄清池5底部的排泥阀开启，泥浆自流进入污泥平衡池11。一级澄清池5出水管路上安装有浊度监测装置，用于监测一级澄清池产水的浊度，如果出水浊度超出设定值，出水返回至曝气调节池1中再次处理。 (5) The primary clarifier 5 is used for sedimentation and separation of the produced flocs and the suspended solids in the waste water, and the supernatant flows to the secondary reaction settling tank 6 by itself. The mud height of the primary clarifier 5 is monitored by a mud level gauge. When it exceeds the set range, the mud discharge valve at the bottom of the primary clarifier 5 is opened, and the mud flows into the sludge balance tank 11 by itself. A turbidity monitoring device is installed on the outlet pipe of the primary clarifier 5 to monitor the turbidity of the water produced in the primary clarifier. If the turbidity of the effluent exceeds the set value, the effluent is returned to the aeration regulating tank 1 for further treatment.
(6)二级反应沉降箱6，加入纯碱和氢氧化钠溶液以沉淀废水中的钙离子和剩余的未沉淀的镁离子，同时二级澄清池8部分回流污泥回流至二级反应沉降箱6。出水流入二级絮凝箱7。 (6) Secondary reaction settling tank 6, add soda ash and sodium hydroxide solution to precipitate calcium ions and remaining unprecipitated magnesium ions in the wastewater, and at the same time, part of the secondary clarifier 8 returns sludge to the secondary reaction settling tank 6. The effluent flows into the secondary flocculation box 7.
(7)在二级絮凝箱(分两格)7中，加入混凝剂，使废水中的胶体颗粒脱稳，凝聚形成许多微小絮凝物；加入絮凝剂，使微小絮凝物通过吸附桥架作用形成易于沉降的大颗粒物，便于在后续二级澄清池8中得到分离。 (7) In the secondary flocculation box (divided into two compartments) 7, add a coagulant to destabilize the colloidal particles in the wastewater and coagulate to form many tiny flocs; add a flocculant to make the tiny flocs form through the adsorption bridge The large particles that are easy to settle are easy to be separated in the subsequent secondary clarifier 8.
(8)二级澄清池8用于对产生的絮凝物进行沉淀分离，上清液自流至中间水池9。二级澄清池8的泥浆高度由泥位计进行监测，当超过设定范围时，二级澄清池8底部的排泥阀开启，泥浆自流进入污泥平衡池11。 (8) The secondary clarifier 8 is used for sedimentation and separation of the produced flocs, and the supernatant flows to the intermediate pool 9 by itself. The mud height of the secondary clarifier 8 is monitored by a mud level gauge. When it exceeds the set range, the mud discharge valve at the bottom of the secondary clarifier 8 is opened, and the mud flows into the sludge balance tank 11 by itself.
(9)中间水池9设置pH计，通过投加盐酸，调节废水pH值为6-9之间。调整pH后的废水经多介质过滤器10，将废水中细小的颗粒物、悬浮物、胶体等杂质过滤去除，保证出水浊度。在多介质过滤器出水管路设置浊度计，用于监测产水浊度，保证满足后续处理要求。 (9) The intermediate pool 9 is provided with a pH meter, and the pH value of the waste water is adjusted between 6 and 9 by adding hydrochloric acid. The pH-adjusted wastewater passes through the multimedia filter 10 to filter and remove impurities such as fine particles, suspended solids, and colloids in the wastewater to ensure the turbidity of the effluent. A turbidity meter is installed in the outlet pipeline of the multimedia filter to monitor the turbidity of the product water to ensure that the subsequent treatment requirements are met.
(10)设置污泥平衡池11，平衡脱硫废水预处理装置产生污泥的量。一级澄清池5和二级澄清池8产生的污泥自流进入污泥平衡池11，污泥平衡池11内设有泥位计，达到设定值时，污泥泵自动开启，将污泥输送至板框压滤机12进行脱水，脱水后的泥饼用作脱硫剂或外运处置，上清液回至调节曝气池1再次循环处理。 (10) Set up a sludge balance tank 11 to balance the amount of sludge generated by the desulfurization wastewater pretreatment device. The sludge produced by the primary clarifier 5 and the secondary clarifier 8 enters the sludge balance tank 11 by gravity, and a mud level gauge is installed in the sludge balance tank 11. When the set value is reached, the sludge pump is automatically opened to discharge the sludge Transport to the plate and frame filter press 12 for dehydration, the dehydrated mud cake is used as a desulfurizer or transported outside for disposal, and the supernatant is returned to the regulating aeration tank 1 for recycling again.
所属领域的普通技术人员应当理解：以上所述仅为本实用新型的具体实施例而已，并不用于限制本实用新型，凡在本实用新型的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。 Those of ordinary skill in the art should understand that: the above descriptions are only specific embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications made within the spirit and principles of the present utility model, equivalent Replacement, improvement, etc. should all be included in the protection scope of the present utility model.
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| CN105439358A (en) * | 2015-12-30 | 2016-03-30 | 北京清大国华环境股份有限公司 | Method and device for realizing zero discharge of desulfurization wastewater |
| CN105540977A (en) * | 2016-01-14 | 2016-05-04 | 中电环保股份有限公司 | Desulfurized waste water treatment method and system |
| CN105692959A (en) * | 2016-03-01 | 2016-06-22 | 大唐环境产业集团股份有限公司 | Low-sludge-output desulfurization waste water treatment device and method |
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| CN107162269A (en) * | 2017-06-30 | 2017-09-15 | 江阴市尚时环境工程有限公司 | Desulfurization wastewater treatment system and its processing method |
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| CN110078249A (en) * | 2018-01-25 | 2019-08-02 | 宝山钢铁股份有限公司 | Remove the deep treatment method and system of COD and total iron in power plant desulfurization wastewater |
| CN110357304A (en) * | 2019-07-19 | 2019-10-22 | 中电环保股份有限公司 | A kind of desulfurization wastewater softening microfiltration systems and technique |
| CN115893713A (en) * | 2022-10-31 | 2023-04-04 | 华能陇东能源有限责任公司正宁电厂 | Used in thermal power plant desulfurization wastewater treatment system and treatment method |
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