CN111039421A - Circulating water online descaling device and method based on electrochemistry - Google Patents

Circulating water online descaling device and method based on electrochemistry Download PDF

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Publication number
CN111039421A
CN111039421A CN201911271220.7A CN201911271220A CN111039421A CN 111039421 A CN111039421 A CN 111039421A CN 201911271220 A CN201911271220 A CN 201911271220A CN 111039421 A CN111039421 A CN 111039421A
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Prior art keywords
water
electrochemical device
pump
electrode
wastewater
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Pending
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CN201911271220.7A
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Chinese (zh)
Inventor
季献华
李武林
姚志全
李宽
王辰
徐俊秀
周宇亮
赵晓东
吴四伍
季晓艳
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Jiangsu Jingyuan Environmental Protection Co ltd
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Jiangsu Jingyuan Environmental Protection Co ltd
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Priority to CN201911271220.7A priority Critical patent/CN111039421A/en
Publication of CN111039421A publication Critical patent/CN111039421A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/14Maintenance of water treatment installations

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

The invention discloses an electrochemical-based online circulating water descaling device, which comprises a raw water tank, a raw water pump, an electrochemical device, a multi-medium filter, a clean water tank, a clean water pump, a wastewater tank, a wastewater pump and a filter press, wherein one end of a water inlet of the raw water pump is connected with the raw water tank, one end of a water outlet of the raw water pump is connected with the electrochemical device, the upper end of the electrochemical device is connected with the upper end of the multi-medium filter, the lower end of the electrochemical device is respectively connected with the lower end of the multi-medium filter and the wastewater tank, the multi-medium filter is also connected with the clean water tank, the clean water pump is arranged in the clean water tank, the wastewater pump is arranged in the wastewater tank, and the wastewater pump is connected with the filter press. Can prevent the accumulation of the solid at the bottom and discharge the solid at regular time through a sewage discharge pipe.

Description

Circulating water online descaling device and method based on electrochemistry
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an electrochemical-based circulating water online descaling device and a descaling method.
Background
Electrochemical technology has been in practical use for many years as a clean scale control technology in the treatment of cooling circulating water. Electrochemical removal of scale has several advantages: the environment is friendly, and no environmental pollution is caused; no treatment and chemical addition are required; automation and more convenient process control can be achieved. The main problems of the electrochemical device in the using process are as follows: 1. the anode consumes too fast, and the negative pole scale deposit is serious, and what present mainstream adopted is that power output inverted electrode moves, makes the negative pole incrustation scale drop with the help of inverted electrode, and frequent inverted electrode scale removal will make electrolytic device's positive pole lose catalytic activity, leads to the electrode to produce very high overpotential, and current efficiency descends. 2. The pole plate material is heavy and is not easy to replace after being lost. 3. The inside of the electrochemical device is blocked and is not easy to clean. 4. The internal channel of the electrochemical device is unreasonable in arrangement, so that the electrochemical device is easy to die, and the reaction efficiency is low.
Aiming at the defects of the existing circulating water descaling device, the problem that in industrial production, circulating cooling water scales on the surface of heat exchange equipment to influence the heat transfer efficiency of a heat exchanger and bring a series of problems to subsequent production, such as reduction of yield, increase of energy consumption and cost, is solved. The common chemical descaling method causes secondary pollution to water, so that a high-efficiency, pollution-free and low-cost scale inhibition technology needs to be developed.
Disclosure of Invention
The invention aims to provide an electrochemical-based circulating water online descaling device and a descaling method, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an electrochemistry-based circulating water online descaling device comprises a raw water pool, a raw water pump, an electrochemical device, a multi-media filter, a clean water pool, a clean water pump, a wastewater pool, a wastewater pump and a filter press, wherein one end of a water inlet of the raw water pump is connected with the raw water pool, one end of a water outlet of the raw water pump is connected with the electrochemical device, the upper end of the electrochemical device is connected with the upper end of the multi-media filter, the lower end of the electrochemical device is respectively connected with the lower end of the multi-media filter and the wastewater pool, the multi-media filter is also connected with the clean water pool, the clean water pump is arranged in the clean water pool, the wastewater pump is arranged in the;
the electrochemical device is characterized in that a plurality of water flowing chambers and filling chambers are separated from each other through a plurality of micropore net grooves, the water flowing chambers and the filling chambers are arranged at intervals, two water flowing chambers which are close to each other are communicated with each other through a communicating pipe, the electrodes are filled in the filling chambers, electrodes and pulse power supplies are arranged in each filling chamber, a cleaning pipe is arranged in each water flowing chamber, the two ends of the electrochemical device are located on the outer sides of the water flowing chambers on the two sides and are provided with a water inlet and a water outlet respectively, the bottom of the electrochemical device is conical, a plurality of sewage drains are arranged at the bottom of the electrochemical device, a rapping motor is further arranged at the bottom of the electrochemical device, and a material supplementing port is formed in the upper end of each filling chamber on the upper.
Preferably, the electrochemical device is a cylinder or a cuboid double-spliced vertical installation, the electrochemical device is made of steel, and the electrochemical device is internally lined with rubber and externally corrosion-resistant.
Preferably, the electrode filler at least contains one or more of metal materials such as titanium, iron, aluminum, zinc, copper and the like.
Preferably, the pulse power supply inputs alternating current AC 380V, the output direct current voltage DC 0-30V of the pulse power supply is adjustable, the current DC 0-1600A of the pulse power supply is adjustable, and the pulse power supply has a pole-reversing function.
Preferably, the method comprises the following steps:
the method comprises the following steps: circulating water to enter a raw water pool, and sending the water to an electrochemical device by a raw water pump for treatment;
step two: the water enters through the water inlet, passes through the communicating pipe in a U shape in the electrochemical device, so that the water is fully contacted with the electrodes, and then flows out through the water outlet pipe, the pulse power supply provides pulse output for the electrodes, and the output electrode phase of the power supply is automatically switched according to the output pulse in the operation process;
step three: the treated water enters a multi-media filter, the treated water enters a clean water tank, a clean water pump sends the water to a water consumption point, the sewage discharged by the electrochemical device and the multi-media filter enters a wastewater tank, a wastewater pump sends the sewage to a filter press for treatment, and mud cakes are transported outside for treatment.
Compared with the prior art, the invention has the beneficial effects that:
(1) strong impact resistance: the electrochemical effect is not influenced by the water quality change (water temperature, SS, COD, PH and the like).
(2) The current is uniformly distributed in the electrochemical device, the reaction effect is good, and the treatment efficiency is high.
(3) The electrochemical device is vertically arranged and combined with the polar plate and is effectively discharged through a drain pipe at the lower part;
(4) the incoming water passes through the electrochemical device in a U shape and is fully contacted, so that the reaction effect is improved;
(5) electrode supplement can be carried out by disassembling and fixing the top cover on the electrochemical device, and the electrode supplement is convenient;
(6) the electrochemical device is of a vertical structure, is combined, occupies small area, is convenient to transport and can be used in parallel.
(7) The output is a pulse power supply, the safety is reliable, and the use power is low.
(8) The output pole phase of the power supply is automatically switched at regular time in the running process, so that the phenomenon that the anode is consumed too fast and the cathode is passivated due to long-time running is avoided.
(9) The real environmental protection technology: the physical process has no secondary pollution. Conventional chemical dosing methods can alter the PH of the water and produce new environmentally polluting chemical products.
(10) Stable treatment effect: can adapt to the change of water quality and has stable water outlet.
(11) The cost is saved: including initial and operating costs: the energy consumption is little: low power consumption, no need of adding chemicals and no other energy consumption; the management cost is low: the full-automatic operation is realized, and the personnel management is not needed; the maintenance cost is low: the spare parts are long in replacement period and stable in operation.
(12) The equipment is safe and stable in operation: low-pressure operation, safety and stability.
(13) The recycling rate of the industrial sewage is improved: more than 95% of the sewage treated by the electrochemical system can be recycled.
(14) Has a disinfection effect on sewage: the electrochemical technology can kill bacteria and viruses in sewage at the same time.
(15) And (3) scale formation prevention: the electrochemical technology can remove calcium ions in water.
(16) The electrochemical device is internally provided with a cleaning pipe for cleaning at regular time to avoid blockage.
(17) The bottom sewage discharge port of the electrochemical device is provided with a vibrator, so that the accumulation of bottom solids can be prevented, and the bottom solids are discharged through a sewage discharge pipe at regular time.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the electrochemical device structure.
FIG. 3 is a cross-sectional top view of the electrochemical device structure.
In the figure: the device comprises a raw water tank 1, a raw water pump 2, an electrochemical device 3, a multi-medium filter 4, a clean water tank 5, a clean water pump 6, a wastewater tank 7, a wastewater pump 8, a filter press 9, electrode fillers 10, a microporous screen groove 11, a material supplementing opening 12, a water inlet 13, a water outlet 14, a cleaning pipe 15, a sewage draining outlet 16, a rapping motor 17, a communicating pipe 18 and a pulse power supply 19.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: an electrochemistry-based circulating water online descaling device comprises a raw water pool 1, a raw water pump 2, an electrochemistry device 3 and a multi-media filter 4, clean water basin 5, clean water pump 6, effluent disposal basin 7, waste water pump 8 and pressure filter 9, the water inlet 13 one end of raw water pump 2 links to each other with raw water basin 1, the delivery port 14 one end of raw water pump 2 links to each other with electrochemical device 3, electrochemical device 3 is the vertical installation of cylinder or cuboid double-pin, electrochemical device 3 material is the steel, the inside lining of electrochemical device 3 glues and the outside is anticorrosive, electrochemical device 3 upper end links to each other with many medium filter 4 upper end, electrochemical device 3 lower extreme links to each other with many medium filter 4 lower extreme and waste water basin 7 respectively, many medium filter 4 still links to each other with clean water basin 5, be provided with clean water pump 6 in the clean water basin 5, be provided with waste water pump 8 in the waste water basin 7, waste water pump 8.
Wherein, the volume design of the raw water pool 1 is fully considered, and the water inlet can be buffered and homogenized.
As shown in fig. 2-3, the electrochemical device 3 is internally partitioned by a plurality of microporous mesh grooves 11 into a plurality of water flowing chambers and filler chambers, the water flowing chambers and the filler chambers are arranged at intervals, two water flowing chambers which are close to each other are mutually communicated through a communicating pipe 18, an electrode filler 10 is filled in the filler chambers, the electrode filler 10 at least contains one or more of metal materials such as titanium, iron, aluminum, zinc, copper and the like, an electrode 20 is arranged in each filler chamber, each electrode 20 is connected with a pulse power supply 19, the pulse power supply 19 inputs alternating current AC 380V, the pulse power supply 19 outputs direct current voltage DC 0-30V which can be adjusted and current 0-1600A which can be adjusted, the pulse power supply 19 has a pole-reversing function, a cleaning pipe 15 is arranged in each water flowing chamber, a water inlet 13 and a water outlet 14 are respectively arranged on the outer sides of the water flowing chambers at two ends of the electrochemical, the bottom of the electrochemical device 3 is conical, a plurality of sewage outlets 16 are arranged at the bottom end of the electrochemical device 3, a rapping motor 17 is further arranged at the bottom of the electrochemical device 3, and a material supplementing port 12 is arranged at the upper end of each filling cavity on the upper surface of the electrochemical device 3.
The electrochemical device 3 uses the principle: the electrochemical device 3 feeds water through the water inlet 13, the power supply is turned on after the container is filled with water, the output current and the output voltage are adjusted, the retention time of the wastewater is 10-60min, and the water is discharged through the water outlet 14. The electrochemical device 3 is internally lined with glue, the exterior is anticorrosive, the interior is provided with micropore net grooves 11 with the interval of 2-10cm, the interior is filled with electrode filler 10, the filler at least contains one or more of metal materials such as titanium, iron, aluminum, zinc, copper and the like, a plurality of groups of the fillers are alternately arranged, the electrodes are provided with communicating pipes 18, incoming water enters through a water inlet 13, the incoming water passes through the communicating pipes 18 in the electrochemical device 3 in a U shape, the incoming water is fully contacted with the electrodes and flows out through a water outlet pipe 14, a pulse power supply 19 provides pulse output for the electrodes, the output pole phase of the power supply is automatically switched according to the output pulse in the operation process, the phenomena that the anode is excessively consumed fast due to long-time operation, the cathode is passivated and scaled are avoided, a rapping motor 17 is arranged at the conical bottom of the electrochemical device 3, the accumulation of bottom solids can be prevented, the, the electrode packing 10 is cleaned at regular time to avoid blockage, and when the electrode packing 10 is used up, the packing can be supplemented through the material supplementing port 12.
A descaling method of an electrochemical-based circulating water online descaling device comprises the following steps:
the method comprises the following steps: circulating water enters a raw water pool 1, and a raw water pump 2 sends the incoming water to an electrochemical device 3 for treatment;
step two: the water enters through the water inlet 13, passes through the communicating pipe 18 in a U shape in the electrochemical device 3, so that the water is fully contacted with the electrode 20 and flows out through the water outlet pipe, the pulse power supply 19 provides pulse output for the electrode 20, the output pole phase of the power supply is automatically switched according to the output pulse in the operation process, and the phenomena of over-fast anode consumption, cathode passivation and scaling caused by long-time operation are avoided;
step three: the treated water enters a multi-media filter 4, enters a clean water tank 5 after treatment, a clean water pump 6 sends the water to a water using point, the sewage discharged by the electrochemical device 3 and the multi-media filter 4 enters a wastewater tank 7, a wastewater pump 8 sends the sewage to a filter press 9 for treatment, and mud cakes are transported outside for treatment
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a circulating water online scale removal device based on electrochemistry which characterized in that: comprises a raw water pool (1), a raw water pump (2), an electrochemical device (3), a multi-medium filter (4), a clean water pool (5), a clean water pump (6), a wastewater pool (7), a wastewater pump (8) and a filter press (9), one end of a water inlet (13) of the raw water pump (2) is connected with the raw water pool (1), one end of a water outlet (14) of the raw water pump (2) is connected with the electrochemical device (3), the upper end of the electrochemical device (3) is connected with the upper end of the multi-media filter (4), the lower end of the electrochemical device (3) is respectively connected with the lower end of the multi-media filter (4) and the wastewater tank (7), the multi-medium filter (4) is also connected with a clean water tank (5), a clean water pump (6) is arranged in the clean water tank (5), a waste water pump (8) is arranged in the waste water tank (7), and the waste water pump (8) is connected with a filter press (9);
the electrochemical device (3) is internally separated by a plurality of water flowing chambers and filling chambers through a plurality of microporous mesh grooves (11), the water flowing chambers and the filling chambers are arranged at intervals, two water flowing chambers which are close to each other are mutually communicated through a communicating pipe (18), an electrode filler (10) is filled in each filling chamber, an electrode (20) is arranged in each filling chamber, each electrode (20) is connected with a pulse power supply (19), a cleaning pipe (15) is arranged in each water flowing chamber, the outer sides of the water flowing chambers at two sides of the electrochemical device (3) are respectively provided with a water inlet (13) and a water outlet (14), the bottom of the electrochemical device (3) is conical, the bottom of the electrochemical device (3) is provided with a plurality of sewage outlets (16), and the bottom of the electrochemical device (3) is also provided with a rapping motor (17), and the upper surface of the electrochemical device (3) is provided with a material supplementing port (12) at the upper end of each filler cavity.
2. The on-line circulating water descaling device based on electrochemistry of claim 1, wherein: electrochemical device (3) are cylinder or the vertical installation of cuboid double-pin, electrochemical device (3) material is the steel, the inside lining of electrochemical device (3) is glued and outside is anticorrosive.
3. The on-line circulating water descaling device based on electrochemistry of claim 1, wherein: the electrode filler (10) at least contains one or more of metal materials such as titanium, iron, aluminum, zinc, copper and the like.
4. The on-line circulating water descaling device based on electrochemistry of claim 1, wherein: alternating current AC 380V is input into the pulse power supply (19), direct current voltage DC 0-30V and current 0-1600A are output by the pulse power supply (19) and adjustable, and the pulse power supply (19) has a pole-reversing function.
5. The descaling method of the electrochemical-based circulating water online descaling device according to claim 1, wherein the descaling method comprises the following steps: the method comprises the following steps:
the method comprises the following steps: circulating water enters a raw water pool (1), and a raw water pump (2) sends the incoming water to an electrochemical device (3) for treatment;
step two: the water enters through the water inlet (13), passes through the communication pipe (18) in the electrochemical device (3) in a U shape, is fully contacted with the electrode (20), and then flows out through the water outlet pipe, the pulse power supply (19) provides pulse output for the electrode (20), and the output electrode phase of the power supply is automatically switched according to the output pulse in the operation process;
step three: the treated water enters a multi-media filter (4), enters a clean water tank (5) after treatment, a clean water pump (6) sends the water to a water consumption point, the electrochemical device (3) and the multi-media filter (4) discharge the sewage to enter a wastewater tank (7), a wastewater pump (8) sends the sewage to a filter press (9) for treatment, and mud cakes are transported outside for treatment.
CN201911271220.7A 2019-12-12 2019-12-12 Circulating water online descaling device and method based on electrochemistry Pending CN111039421A (en)

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201722249U (en) * 2010-04-02 2011-01-26 肖东 Industrial sewage electrochemical treatment plant
CN103193301A (en) * 2013-04-27 2013-07-10 国电环境保护研究院 Electrochemical reactor for processing nitrogenous organic wastewater, and application and processing method thereof
CN106115985A (en) * 2015-09-11 2016-11-16 卫士循环水处理(北京)有限公司 A kind of electro-chemical water processes natural filtration scaler system
WO2017071564A1 (en) * 2015-10-27 2017-05-04 雅本化学股份有限公司 Three-dimensional electrode filler and manufacturing method thereof
CN108083455A (en) * 2018-01-30 2018-05-29 浙江大学 A kind of pulling flow type electrochemical softening of water method and apparatus
CN109399812A (en) * 2018-12-20 2019-03-01 大连理工大学 A kind of electrochemical descaling device
CN109534454A (en) * 2018-12-17 2019-03-29 上海东方威尔节能技术有限公司 Modularization normal pressure apparatus for electrochemical treatment
CN110204011A (en) * 2019-07-11 2019-09-06 中国华能集团清洁能源技术研究院有限公司 A kind of two-part electro-chemical water processing system for scale removal and dechlorination
CN110282704A (en) * 2019-05-07 2019-09-27 广东省测试分析研究所(中国广州分析测试中心) A kind of electrochemical modification filler for water process
CN209618954U (en) * 2018-12-25 2019-11-12 青岛洛克环保科技有限公司 A kind of electromagnetism sewage filter device
CN212403667U (en) * 2019-12-12 2021-01-26 江苏京源环保股份有限公司 Online circulating water descaling device based on electrochemistry

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201722249U (en) * 2010-04-02 2011-01-26 肖东 Industrial sewage electrochemical treatment plant
CN103193301A (en) * 2013-04-27 2013-07-10 国电环境保护研究院 Electrochemical reactor for processing nitrogenous organic wastewater, and application and processing method thereof
CN106115985A (en) * 2015-09-11 2016-11-16 卫士循环水处理(北京)有限公司 A kind of electro-chemical water processes natural filtration scaler system
WO2017071564A1 (en) * 2015-10-27 2017-05-04 雅本化学股份有限公司 Three-dimensional electrode filler and manufacturing method thereof
CN108083455A (en) * 2018-01-30 2018-05-29 浙江大学 A kind of pulling flow type electrochemical softening of water method and apparatus
CN109534454A (en) * 2018-12-17 2019-03-29 上海东方威尔节能技术有限公司 Modularization normal pressure apparatus for electrochemical treatment
CN109399812A (en) * 2018-12-20 2019-03-01 大连理工大学 A kind of electrochemical descaling device
CN209618954U (en) * 2018-12-25 2019-11-12 青岛洛克环保科技有限公司 A kind of electromagnetism sewage filter device
CN110282704A (en) * 2019-05-07 2019-09-27 广东省测试分析研究所(中国广州分析测试中心) A kind of electrochemical modification filler for water process
CN110204011A (en) * 2019-07-11 2019-09-06 中国华能集团清洁能源技术研究院有限公司 A kind of two-part electro-chemical water processing system for scale removal and dechlorination
CN212403667U (en) * 2019-12-12 2021-01-26 江苏京源环保股份有限公司 Online circulating water descaling device based on electrochemistry

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