CN207537267U - Environmental dredging tail water processing unit based on membrane integrating technique - Google Patents
Environmental dredging tail water processing unit based on membrane integrating technique Download PDFInfo
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Abstract
本实用新型涉及一种基于膜集成技术的环保疏浚尾水处理装置。本实用新型属于环保疏浚尾水处理技术领域。基于膜集成技术的环保疏浚尾水处理装置，由预处理装置、膜集成装置和后处理装置组合而成，预处理装置由沉淀池、增压泵、砂滤器依次连接而成；膜集成装置包括超滤膜组件、保安过滤组件及反渗透组件；超滤膜组件由超滤进水电磁阀、超滤膜元件、与超滤膜元件连接的超滤浓水出水电磁阀和超滤产水电磁阀连接组成；保安过滤器上接超滤膜组件产水口，下接反渗透组件进水口；反渗透膜组件，包括保护开关、反渗透泵、反渗透膜元件；后处理装置，包括中和池及与中和池连接的加药箱。本实用新型具有工艺自动化程度高，处理效果好，产水水质稳定等优点。
The utility model relates to an environmental protection dredging tail water treatment device based on membrane integration technology. The utility model belongs to the technical field of environmental protection dredging tail water treatment. The environmental protection dredging tail water treatment device based on membrane integration technology is composed of a pretreatment device, a membrane integration device and a post-treatment device. The pretreatment device is connected in sequence by a sedimentation tank, a booster pump and a sand filter; the membrane integration device includes Ultrafiltration membrane module, security filter module and reverse osmosis module; the ultrafiltration membrane module consists of ultrafiltration water inlet solenoid valve, ultrafiltration membrane element, ultrafiltration concentrated water outlet solenoid valve connected with ultrafiltration membrane element and ultrafiltration water production electromagnetic valve. The valve is connected; the security filter is connected to the water outlet of the ultrafiltration membrane module, and the water inlet of the reverse osmosis module is connected to the bottom; the reverse osmosis membrane module includes a protection switch, a reverse osmosis pump, and a reverse osmosis membrane element; the post-treatment device includes a neutralization tank And the dosing box connected with the neutralization pool. The utility model has the advantages of high process automation, good treatment effect, stable water quality and the like.
Description
技术领域technical field
本实用新型属于环保疏浚尾水处理技术领域，特别是涉及一种基于膜集成技术的环保疏浚尾水处理装置。The utility model belongs to the technical field of environmental protection dredging tail water treatment, in particular to an environmental protection dredging tail water treatment device based on membrane integration technology.
背景技术Background technique
目前，环保疏浚是一项湖泊内污染源控制技术，是在航道、河港等疏浚工程基础上发展起来的，旨在清除湖泊中的污染底泥，并为湖泊水生生态系统的恢复创造条件，同时还需要与湖泊综合整理方案相协调。疏浚过程中，疏浚底泥经减量化处理将产生大量尾水。At present, environmental protection dredging is a pollution source control technology in lakes. It is developed on the basis of dredging projects such as waterways and river ports. It aims to remove polluted sediment in lakes and create conditions for the restoration of lake aquatic ecosystems. It needs to be coordinated with the comprehensive lake consolidation plan. During the dredging process, the dredged sediment will produce a large amount of tail water after reduction treatment.
环保疏浚尾水中含有氮、磷、有机污染物及重金属污染物，这些污染物大部分附着在悬浮颗粒上并随尾水排入受纳水体中，将会造成受纳水体的二次污染，这些悬浮颗粒比重小，短时间内难以沉淀去除。Environmental protection dredging tail water contains nitrogen, phosphorus, organic pollutants and heavy metal pollutants. Most of these pollutants are attached to suspended particles and discharged into the receiving water body along with the tail water, which will cause secondary pollution of the receiving water body. Suspended particles have a small specific gravity and are difficult to settle and remove in a short time.
当前环保疏浚尾水处理工艺主要包括：(1)通过沉淀池的流径延长设计增加尾水水力停留时间、沉降有效水深、流速，增强悬浮物自身重力沉降作用，强化颗粒在沉淀池的沉降效率，达到去除固体悬浮物及其他污染物的目的；(2)通过投加化学絮凝药剂来增强颗粒物的沉降效率，使得污染物快速附着在颗粒物上絮凝沉积在沉淀池底部，上层清水排入受纳水体。这些工艺在实际应用中都存在一定不足：(1)水处理量大，导致化学絮凝剂投加量过大，容易造成二次污染；(2)化学药剂投加量不易根据尾水水质情况做出调整，出水水质不稳定。The current environmental protection dredging tail water treatment process mainly includes: (1) Increase the hydraulic retention time of the tail water, the effective settlement water depth, and the flow velocity of the tail water through the extension design of the flow path of the sedimentation tank, enhance the gravity settlement of the suspended matter itself, and strengthen the sedimentation efficiency of the particles in the sedimentation tank , to achieve the purpose of removing suspended solids and other pollutants; (2) By adding chemical flocculation agents to enhance the settling efficiency of particulate matter, the pollutants will quickly attach to the particulate matter and flocculate and deposit at the bottom of the sedimentation tank, and the upper layer of clear water will be discharged into the receiving tank Water body. These processes have certain deficiencies in practical application: (1) The large amount of water treatment leads to excessive dosage of chemical flocculants, which easily causes secondary pollution; (2) It is difficult to adjust the dosage of chemical agents according to the water quality of the tail water. out adjustment, the effluent water quality is unstable.
发明内容Contents of the invention
本实用新型为解决公知技术中存在的技术问题而提供一种基于膜集成技术的环保疏浚尾水处理装置。The utility model provides an environment-friendly dredging tail water treatment device based on membrane integration technology to solve the technical problems existing in the known technology.
本实用新型的目的是提供一种具有工艺自动化程度高，处理效果好，环保高效，无二次污染且处理效果稳定等特点的基于膜集成技术的环保疏浚尾水处理装置。The purpose of this utility model is to provide an environmentally friendly dredging tail water treatment device based on membrane integration technology, which has the characteristics of high process automation, good treatment effect, environmental protection and high efficiency, no secondary pollution and stable treatment effect.
一种基于膜集成技术的环保疏浚尾水处理装置，由预处理装置、膜集成装置和后处理装置组成。所述预处理装置，包括沉淀池、增压泵，及与增压泵连接的砂滤器；所述膜集成装置，包括超滤过滤组件，保安过滤器组件和反渗透过滤组件；所述超滤过滤组件包括外压式超滤膜壳，及超滤膜壳内的PVDF超滤膜元件，及压力表、常开型电磁阀，及超滤清洗箱，其中超滤出水口与保安过滤器相连接，超滤浓水出水口与沉淀池相连接；所述保安过滤器为过滤精度为10μm的聚丙烯材质的过滤芯，其出水口连接反渗透膜组件；所述反渗透膜组件，包括清洗水箱及高压泵，及与高压泵连接的反渗透膜壳，及反渗透膜壳内部的反渗透膜元件，其中与反渗透浓水连接的管道与沉淀池相连接；所述后处理装置，包括中和池及中和池加药箱。An environmentally friendly dredging tail water treatment device based on membrane integration technology, which consists of a pretreatment device, a membrane integration device and a post-treatment device. The pretreatment device includes a sedimentation tank, a booster pump, and a sand filter connected to the booster pump; the membrane integration device includes an ultrafiltration filter assembly, a security filter assembly and a reverse osmosis filter assembly; the ultrafiltration The filter assembly includes an external pressure ultrafiltration membrane housing, a PVDF ultrafiltration membrane element in the ultrafiltration membrane housing, a pressure gauge, a normally open solenoid valve, and an ultrafiltration cleaning box. The ultrafiltration water outlet is connected to the security filter. connected, the ultrafiltration concentrated water outlet is connected to the sedimentation tank; the security filter is a polypropylene filter element with a filtration accuracy of 10 μm, and its outlet is connected to the reverse osmosis membrane module; the reverse osmosis membrane module includes cleaning Water tank and high-pressure pump, and the reverse osmosis membrane housing that is connected with high-pressure pump, and the reverse osmosis membrane element inside the reverse osmosis membrane housing, wherein the pipeline connected with the reverse osmosis concentrated water is connected with the sedimentation tank; the post-treatment device includes Neutralization pool and neutralization pool plus medicine box.
本实用新型基于膜集成技术的环保疏浚尾水处理装置所采取的技术方案是：The technical scheme adopted by the environmental protection dredging tail water treatment device based on the membrane integration technology of the utility model is:
一种基于膜集成技术的环保疏浚尾水处理装置，其特点是：基于膜集成技术的环保疏浚尾水处理装置由预处理装置、膜集成装置和后处理装置组合而成，预处理装置由沉淀池、增压泵、砂滤器依次连接而成；膜集成装置包括超滤膜组件、保安过滤组件及反渗透组件；超滤膜组件由超滤进水电磁阀、超滤膜元件、与超滤膜元件连接的超滤浓水出水电磁阀和超滤产水电磁阀连接组成；保安过滤器上接超滤膜组件产水口，下接反渗透组件进水口；反渗透膜组件，包括保护开关、反渗透泵、反渗透膜元件、反渗透浓水排放口设有反渗透浓水电磁阀；后处理装置，包括中和池及与中和池连接的加药箱。An environmentally friendly dredging tail water treatment device based on membrane integration technology, which is characterized in that: the environmental protection dredging tail water treatment device based on membrane integration technology is composed of a pretreatment device, a membrane integration device and a post-treatment device. Pool, booster pump and sand filter are connected in sequence; the membrane integrated device includes ultrafiltration membrane module, security filter module and reverse osmosis module; the ultrafiltration membrane module consists of ultrafiltration water inlet solenoid valve, ultrafiltration membrane element, and ultrafiltration The ultrafiltration concentrated water outlet solenoid valve connected to the membrane element and the ultrafiltration water production solenoid valve are connected; the security filter is connected to the ultrafiltration membrane module water production port, and the reverse osmosis module water inlet is connected to the bottom; the reverse osmosis membrane module includes a protection switch, The reverse osmosis pump, the reverse osmosis membrane element, and the reverse osmosis concentrated water discharge port are equipped with a reverse osmosis concentrated water solenoid valve; the post-processing device includes a neutralization tank and a dosing box connected to the neutralization tank.
本实用新型基于膜集成技术的环保疏浚尾水处理装置还可以采用如下技术方案：The environmental protection dredging tail water treatment device based on the membrane integration technology of the utility model can also adopt the following technical scheme:
所述的基于膜集成技术的环保疏浚尾水处理装置，其特点是：砂滤器连接冲洗排放管道；超滤浓水排放口通过超滤冲洗管道与沉淀池连接；反渗透浓水排放口通过反渗透冲洗管与沉淀池连接；反渗透泵连接膜组件清洗药箱。The environmental protection dredging tail water treatment device based on membrane integration technology is characterized in that: the sand filter is connected to the flushing discharge pipe; the ultrafiltration concentrated water discharge port is connected to the sedimentation tank through the ultrafiltration flushing pipe; The osmosis flushing pipe is connected to the sedimentation tank; the reverse osmosis pump is connected to the membrane module cleaning medicine box.
所述的基于膜集成技术的环保疏浚尾水处理装置，其特点是：预处理装置装有砂滤进水压力表，超滤膜组件装有超滤进水压力表、超滤产水流量计、超滤产水压力表，反渗透膜组件装有进水电导率仪、反渗透进水压力表，反渗透产水口连接有产水流量计和产水电导率仪，反渗透浓水口连接有反渗透浓水压力表和反渗透浓水流量计。The environmental protection dredging tail water treatment device based on membrane integration technology is characterized in that: the pretreatment device is equipped with a sand filter inlet pressure gauge, and the ultrafiltration membrane module is equipped with an ultrafiltration inlet water pressure gauge and an ultrafiltration water production flowmeter , ultrafiltration water pressure gauge, reverse osmosis membrane module is equipped with feed water conductivity meter, reverse osmosis feed water pressure gauge, reverse osmosis water product port is connected with product water flow meter and product water conductivity meter, reverse osmosis concentrated water port is connected with Reverse osmosis concentrated water pressure gauge and reverse osmosis concentrated water flow meter.
所述的基于膜集成技术的环保疏浚尾水处理装置，其特点是：超滤膜采用PVDF中空纤维膜，过滤方式为外压式过滤。The environmental protection dredging tail water treatment device based on membrane integration technology is characterized in that: the ultrafiltration membrane adopts PVDF hollow fiber membrane, and the filtration method is external pressure filtration.
所述的基于膜集成技术的环保疏浚尾水处理装置，其特点是：保安过滤器是孔径5－10μm的聚丙烯滤芯。The environmental protection dredging tail water treatment device based on membrane integration technology is characterized in that: the security filter is a polypropylene filter element with a pore size of 5-10 μm.
所述的基于膜集成技术的环保疏浚尾水处理装置，其特点是：反渗透运行方式为错流过滤。The environmental protection dredging tail water treatment device based on the membrane integration technology is characterized in that the operation mode of reverse osmosis is cross-flow filtration.
本实用新型具有的优点和积极效果是：The advantages and positive effects that the utility model has are:
基于膜集成技术的环保疏浚尾水处理装置由于采用了本实用新型全新的技术方案，与现有技术相比，本实用新型具有以下特点：The environmental protection dredging tail water treatment device based on membrane integration technology adopts the new technical solution of the utility model. Compared with the prior art, the utility model has the following characteristics:
1.本装置设置砂滤器定期反洗装置，反洗所产生的废水通过管道回流至沉淀池,有效地避免砂滤堵塞。1. The device is equipped with a regular backwashing device for the sand filter, and the wastewater generated by backwashing is returned to the sedimentation tank through the pipeline, effectively avoiding the blockage of the sand filter.
2.本装置设置超滤定期正冲洗和反冲洗保证膜元件通量，解决了超滤膜元件通量下降的问题。2. The device is equipped with regular positive flushing and backwashing for ultrafiltration to ensure the flux of the membrane element, which solves the problem of flux decline of the ultrafiltration membrane element.
3.本装置设置反渗透定期冲洗，有效保证了反渗透产水量。3. The device is equipped with reverse osmosis regular flushing, which effectively guarantees the water production of reverse osmosis.
4.本装置设置膜元件清洗装置，对膜元件进行定期酸碱清洗，有效解决膜元件污染问题，减少处理成本。4. The device is equipped with a membrane element cleaning device to regularly clean the membrane elements with acid and alkali to effectively solve the problem of membrane element pollution and reduce treatment costs.
5.本装置通过现场多点位在线监测和PLC编程控制，实现尾水处理装置运行的高度自动化，保证装置长期稳定运行。5. Through on-site multi-point on-line monitoring and PLC programming control, the device realizes highly automated operation of the tail water treatment device and ensures long-term stable operation of the device.
附图说明Description of drawings
图1是本实用新型基于膜集成技术的环保疏浚尾水处理装置结构示意图。Figure 1 is a structural schematic diagram of the environmental protection dredging tail water treatment device based on the membrane integration technology of the utility model.
图中，1.沉淀池,2.增压泵,3.压力表,4.砂滤器,5.压力表,6.超滤进水电磁阀,7.电磁阀,8.电磁阀，9.电磁阀，10，超滤膜元件,11、电磁阀,12、流量计,13、压力表,14、保安过滤器,15、电导率仪,16、保护开关,17、压力表,18、高压泵,19、反渗透膜元件,20、药箱,21、反渗透浓水电磁阀，22、反渗透浓水流量计,23、反渗透浓水压力表,24、产水流量计,25、产水电导率仪,26、加药箱,27、中和池，28、超滤膜元件，29、超滤冲洗管道,30、反渗透冲洗管。In the figure, 1. sedimentation tank, 2. booster pump, 3. pressure gauge, 4. sand filter, 5. pressure gauge, 6. ultrafiltration water inlet solenoid valve, 7. solenoid valve, 8. solenoid valve, 9. Solenoid valve, 10, ultrafiltration membrane element, 11, solenoid valve, 12, flow meter, 13, pressure gauge, 14, security filter, 15, conductivity meter, 16, protection switch, 17, pressure gauge, 18, high pressure Pump, 19, reverse osmosis membrane element, 20, medicine box, 21, reverse osmosis concentrated water solenoid valve, 22, reverse osmosis concentrated water flow meter, 23, reverse osmosis concentrated water pressure gauge, 24, product water flow meter, 25, Produced water conductivity meter, 26, dosing box, 27, neutralization tank, 28, ultrafiltration membrane element, 29, ultrafiltration flushing pipe, 30, reverse osmosis flushing pipe.
具体实施方式Detailed ways
为能进一步了解本实用新型的发明内容、特点及功效，兹例举以下实施例，并配合附图详细说明如下：In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:
参阅附图1。Refer to accompanying drawing 1.
实施例1Example 1
一种基于膜集成技术的环保疏浚尾水处理装置，由预处理装置、膜集成装置和后处理装置组合而成，其中：预处理装置由沉淀池、增压泵、砂滤进水压力表、砂滤器依次连接而成；膜集成装置包括超滤膜组件、保安过滤组件及反渗透组件；所述超滤膜组件由超滤进水压力表、超滤进水电磁阀、超滤膜元件、与超滤膜元件连接的超滤浓水出水电磁阀和超滤产水电磁阀、超滤产水流量计、超滤产水压力表连接组成；所述保安过滤器上接超滤膜组件产水口，下接反渗透组件进水口；所述反渗透膜组件，包括进水电导率仪、低压保护开关、反渗透进水压力表和反渗透高压泵、反渗透膜元件、及与反渗透产水口连接的产水流量计和产水电导率仪、及与反渗透浓水口连接的反渗透浓水压力表、反渗透浓水电磁阀和反渗透浓水流量计；后处理装置，包括中和池及与中和池连接的加药箱。An environmentally friendly dredging tail water treatment device based on membrane integration technology, which is composed of a pretreatment device, a membrane integration device and a post-treatment device. The sand filter is connected in sequence; the membrane integrated device includes an ultrafiltration membrane module, a security filter module and a reverse osmosis module; the ultrafiltration membrane module consists of an ultrafiltration water inlet pressure gauge, an ultrafiltration water inlet solenoid valve, an ultrafiltration membrane element, The ultrafiltration concentrated water outlet solenoid valve connected with the ultrafiltration membrane element is connected with the ultrafiltration water production solenoid valve, the ultrafiltration water production flow meter, and the ultrafiltration water production pressure gauge; the security filter is connected to the ultrafiltration membrane module to produce The water port is connected to the water inlet of the reverse osmosis module; the reverse osmosis membrane module includes an inlet water conductivity meter, a low-voltage protection switch, a reverse osmosis inlet water pressure gauge, a reverse osmosis high-pressure pump, a reverse osmosis membrane element, and a reverse osmosis product. The product water flowmeter and the product water conductivity meter connected to the water port, and the reverse osmosis concentrated water pressure gauge connected to the reverse osmosis concentrated water port, the reverse osmosis concentrated water solenoid valve and the reverse osmosis concentrated water flowmeter; post-processing equipment, including neutralization pool and the dosing box connected to the neutralization pool.
砂滤器连接冲洗排放管道；所述超滤浓水排放口通过超滤冲洗管道与沉淀池连接；所述反渗透浓水排放口通过反渗透冲洗管与沉淀池连接；所述反渗透高压泵连接膜组件清洗药箱。超滤膜采用PVDF中空纤维膜，过滤方式为外压式过滤。保安过滤器是孔径10μm的聚丙烯滤芯。反渗透运行方式为错流过滤。The sand filter is connected to the flushing discharge pipeline; the ultrafiltration concentrated water discharge port is connected to the sedimentation tank through the ultrafiltration flushing pipeline; the reverse osmosis concentrated water discharge port is connected to the sedimentation tank through the reverse osmosis flushing pipe; the reverse osmosis high pressure pump is connected to Membrane module cleaning medicine box. The ultrafiltration membrane adopts PVDF hollow fiber membrane, and the filtration method is external pressure filtration. The security filter is a polypropylene filter element with a pore size of 10 μm. Reverse osmosis operates as cross-flow filtration.
本实施例的具体实施过程：The concrete implementation process of this embodiment:
如图1所示的一种基于膜集成技术的环保疏浚尾水处理装置，由预处理装置、膜集成装置和后处理装置组成；预处理装置，包括沉淀池1，及与沉淀池上层清液出水口连接的增压泵2，及与增压泵连接的砂滤进水压力表3，及与压力表连接的砂滤器4；膜集成装置，包括超滤膜组件、保安过滤组件及反渗透组件；所述超滤膜组件包括与砂滤器连接的超滤进水压力表5，及与超滤进水管连接的超滤进水电磁阀6、7，及与电磁阀6、7分别连接的超滤膜元件10、28，及与超滤膜组件连接的超滤浓水出水电磁阀8、9，及超滤产水电磁阀11，及与超滤产水电磁阀连接的超滤产水流量计12、超滤产水压力表13；所述超滤膜产水与保安过滤器14相连接；所述反渗透膜组件，包括与保安过滤器出水口连接的电导率仪15、低压保护开关16、反渗透进水压力表17和反渗透高压泵18，及反渗透膜元件19，及与反渗透产水口连接的产水流量计24和产水电导率仪25，及与反渗透浓水口连接的反渗透浓水压力表23、反渗透浓水电磁阀21和反渗透浓水流量计22；后处理装置，包括与反渗透出水连接的中和池27，及中和池加药箱26。As shown in Figure 1, an environmentally friendly dredging tail water treatment device based on membrane integration technology is composed of a pretreatment device, a membrane integration device and a post-treatment device; the pretreatment device includes a sedimentation tank 1, and the supernatant of the sedimentation tank The booster pump 2 connected to the water outlet, the sand filter inlet pressure gauge 3 connected to the booster pump, and the sand filter 4 connected to the pressure gauge; the membrane integrated device, including ultrafiltration membrane modules, security filter modules and reverse osmosis Components; the ultrafiltration membrane assembly includes an ultrafiltration water inlet pressure gauge 5 connected with a sand filter, an ultrafiltration water inlet electromagnetic valve 6,7 connected with an ultrafiltration water inlet pipe, and an electromagnetic valve 6,7 connected respectively Ultrafiltration membrane elements 10, 28, and ultrafiltration concentrated water outlet solenoid valves 8, 9 connected with ultrafiltration membrane modules, and ultrafiltration produced water solenoid valve 11, and ultrafiltration produced water connected with ultrafiltration produced water solenoid valve Flow meter 12, ultrafiltration water production pressure gauge 13; the ultrafiltration membrane water production is connected with the security filter 14; the reverse osmosis membrane assembly includes a conductivity meter 15 connected to the security filter water outlet, a low pressure protection Switch 16, reverse osmosis inlet water pressure gauge 17 and reverse osmosis high-pressure pump 18, and reverse osmosis membrane element 19, and the product water flow meter 24 and product water conductivity meter 25 that are connected with the reverse osmosis water production port, and the reverse osmosis concentration The reverse osmosis concentrated water pressure gauge 23 connected to the water port, the reverse osmosis concentrated water solenoid valve 21 and the reverse osmosis concentrated water flow meter 22; the post-processing device, including the neutralization tank 27 connected to the reverse osmosis outlet water, and the neutralization tank dosing box 26.
如图1所示，所述的砂滤器4连接冲洗排放管道28；所述的超滤浓水排放口通过超滤冲洗管道29与沉淀池1连接；所述的反渗透浓水排放口通过反渗透冲洗管30与沉淀池1连接；所述的反渗透高压泵18连接膜组件清洗药箱20。As shown in Figure 1, described sand filter 4 is connected flushing discharge pipe 28; Described ultrafiltration concentrated water discharge port is connected with sedimentation tank 1 by ultrafiltration flushing pipe 29; Described reverse osmosis concentrated water discharge port passes reverse osmosis The osmosis flushing pipe 30 is connected to the sedimentation tank 1; the reverse osmosis high pressure pump 18 is connected to the membrane module cleaning medicine box 20.
工作时，尾水首先经过沉淀池1沉淀，去除水中大颗粒固体污染物及其他杂质，其上清液经过增压泵2进入砂滤器4，经过砂滤过滤介质去除水中的悬浮物、微生物、以及其他微细颗粒，以降低水浊度、使水质得到进一步净化；经过砂滤过滤的出水经进水电磁阀6、7进入超滤膜元件10、28，经过两组超滤膜元件过滤后有两部分出水，其中净水出水进入保安过滤器14，浓水出水通过超滤反冲洗管道29进入到沉淀池1；此时经过保安过滤器14过滤之后的出水可以达到反渗透膜的进水水质要求，经过反渗透19处理可以有效去除水中氨氮，总磷及重金属离子，反渗透的两部分出水，其中产水继续进入中和池27，浓水经过反渗透冲洗管道30进入沉淀池1；在中和池通过加药箱26调节尾水水质pH，达到尾水排放标准。When working, the tail water first passes through the sedimentation tank 1 for precipitation to remove large solid pollutants and other impurities in the water. The supernatant enters the sand filter 4 through the booster pump 2, and the suspended solids, microorganisms, and other impurities in the water are removed through the sand filter medium. and other fine particles to reduce water turbidity and further purify the water quality; the effluent filtered by the sand filter enters the ultrafiltration membrane elements 10 and 28 through the inlet solenoid valves 6 and 7, and after being filtered by two sets of ultrafiltration membrane elements, there is Two parts of effluent, wherein the purified water effluent enters the security filter 14, and the concentrated water effluent enters the sedimentation tank 1 through the ultrafiltration backwash pipeline 29; at this time, the effluent filtered by the security filter 14 can reach the influent water quality of the reverse osmosis membrane Requirements, can effectively remove ammonia nitrogen in water, total phosphorus and heavy metal ion through reverse osmosis 19 treatment, two parts of reverse osmosis effluent, wherein produced water continues to enter neutralization tank 27, concentrated water enters sedimentation tank 1 through reverse osmosis flushing pipeline 30; The neutralization tank adjusts the pH of the tail water quality through the dosing box 26 to meet the tail water discharge standard.
本实用新型的环保疏浚尾水处理装置，采用沉淀池沉降+砂滤器过滤+超滤+反渗透+中和池的工艺可以很好的对环保疏浚尾水中的SS和浊度进行有效去除，SS产水可以达到1ppm及以下，浊度小于等于0.2NTU；其中，超滤运行方式为外压式死端过滤，采用中空纤维PVDF超滤膜，过滤孔径为10－100nm，超滤操作压力为0.1MPa－0.4MPa，超滤膜通量为40-120l/(m2·hr)；本装置中反渗透膜元件过滤孔径为0.1nm，对经过超滤处理后尾水中的氨氮、总磷及重金属离子具有更好的去除效果。其中反渗透运行方式为错流过滤，反渗透膜组件运行压力为0.7MPa－1.2Mpa，反渗透膜通量为19－27l/(m2·h)。本装置中，中和池主要进行尾水pH的中和，实现尾水最终达标排放。The environmental protection dredging tail water treatment device of the utility model adopts the technology of sedimentation tank sedimentation + sand filter filtration + ultrafiltration + reverse osmosis + neutralization tank, which can effectively remove SS and turbidity in the environmental protection dredging tail water, SS The produced water can reach 1ppm and below, and the turbidity is less than or equal to 0.2NTU; among them, the ultrafiltration operation mode is external pressure dead-end filtration, using hollow fiber PVDF ultrafiltration membrane, the filtration pore size is 10-100nm, and the ultrafiltration operating pressure is 0.1 MPa－0.4MPa, the flux of the ultrafiltration membrane is 40-120l/(m 2 hr); Ions have a better removal effect. The reverse osmosis operating mode is cross-flow filtration, the operating pressure of the reverse osmosis membrane module is 0.7MPa-1.2Mpa, and the flux of the reverse osmosis membrane is 19-27l/(m 2 ·h). In this device, the neutralization tank is mainly used to neutralize the pH of the tail water, so as to realize the final discharge of the tail water up to the standard.
本实用新型通过现场多点位在线监测和PLC编程控制，实现尾水处理装置运行的高度自动化，并配套设置了膜清洗装置，使整个装置可以全年运行。本实用新型进一步提高了尾水处理后水质，并保证装置长期稳定运行。The utility model realizes the highly automatic operation of the tail water treatment device through on-site multi-point on-line monitoring and PLC programming control, and is equipped with a membrane cleaning device so that the whole device can run all year round. The utility model further improves the water quality of the treated tail water and ensures long-term stable operation of the device.
本实施例具有所述的工艺自动化程度高，处理效果好，环保高效，无二次污染且处理效果稳定等积极效果。This embodiment has positive effects such as high degree of process automation, good treatment effect, environmental protection and high efficiency, no secondary pollution and stable treatment effect.
Claims (6)
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| CN116589136A (en) * | 2023-06-05 | 2023-08-15 | 中交第二航务工程局有限公司 | A pile foundation waste mud dehydration tail water treatment system and pile foundation mud treatment method |
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| CN107698062A (en) * | 2017-11-13 | 2018-02-16 | 中交天津港航勘察设计研究院有限公司 | A kind of environmental dredging tail water processing unit based on membrane integrating technique |
| CN116589136A (en) * | 2023-06-05 | 2023-08-15 | 中交第二航务工程局有限公司 | A pile foundation waste mud dehydration tail water treatment system and pile foundation mud treatment method |
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