CN212102380U

CN212102380U - Flocculation assembly line

Info

Publication number: CN212102380U
Application number: CN202020730220.0U
Authority: CN
Inventors: 杨磊
Original assignee: Ningguo Guopu Spectrum Of Scientific Instruments And Equipment Co ltd
Current assignee: Ningguo Guopu Spectrum Of Scientific Instruments And Equipment Co ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2020-12-08
Anticipated expiration: 2030-05-06

Abstract

The invention relates to the field of wastewater treatment, in particular to a flocculation assembly line which comprises an electrolytic tank, wherein at least one group of electrode plates are arranged in the electrolytic tank, each electrode plate comprises a first electrode plate and a second electrode plate which are oppositely arranged, and the flocculation assembly line also comprises a reverse device, the reverse device comprises a reverse device and a reverse device, the first electrode plate and the second electrode plate are respectively and electrically connected with the reverse device and the reverse device, the flocculation assembly line has longer service life, and dirt is easy to clean. This flocculation assembly line passes through the polarity of the device of falling the device and the device of falling the stage for the polarity that constitutes the first polar plate of every group plate electrode and second grade board in turn is anodal and negative pole in every electrolytic bath, under the prerequisite that does not influence flocculation, avoids a polar plate to corrode fast and another polar plate by the condition of faster parcel, has greatly improved flocculation's efficiency, and has prolonged the life of polar plate.

Description

Flocculation assembly line

Technical Field

The invention relates to the field of wastewater treatment, in particular to a flocculation production line.

Background

Flocculation refers to the process of making suspended particles in water or liquid aggregate and grow or form flocs, thereby accelerating the coagulation of particles and achieving the purpose of solid-liquid separation.

The flocculation process generally has the following reactions:

(1) electrolytic oxidation

The oxidation in the electrolytic process can be classified as direct oxidation, i.e. the oxidation occurs when the pollutants directly lose electrons at the anode; and indirect oxidation, using anions of lower electrode potential in solution, e.g. OH-, Cl-, to lose electrons at the anode to form a new active species of stronger oxidant, e.g. [ O ]]、[OH]Cl2, and the like. The active substances are used for oxidizing and decomposing BOD in water₅、COD、NH₃-N, etc.

(2) Electrolytic reduction

The reduction in the electrolysis process can also be divided into two categories. One is direct reduction, that is, the pollutant directly obtains electrons on the cathode to generate reduction; the other is indirect reduction, and the positive ions in the pollutants firstly obtain electrons at the cathode, so that the high-valence or low-valence metal positive ions in the electrolyte obtain electrons at the cathode and are directly reduced into low-valence positive ions or metal precipitates.

(3) Electrolytic flocculation

Soluble anode such as ferrum-aluminium etc., and after direct current is applied, the anode loses electrons to form metal cation Fe2⁺、Al3⁺The flocculant is combined with OH-in a solution to generate high-activity flocculation groups, has strong adsorption capacity and better flocculation effect than a common flocculant, and can adsorb and codeposit pollutants in wastewater to remove the pollutants by utilizing the functions of adsorption bridging, net catching, rolling, sweeping and the like.

(4) Electrolytic air flotation

The electrolytic air flotation is to electrolyze the wastewater, water molecules are ionized to generate H + and OH-, and the H + and the OH-are directionally migrated under the drive of an electric field, and hydrogen and oxygen are respectively separated out on the surfaces of a cathode plate and an anode plate. The diameter of newly generated bubbles is very small, and hydrogen bubbles are about 10-30 μm, and oxygen bubbles are about 20-60 μm; the diameter of the bubbles generated during the pressurized dissolved air floatation is 1-150 μm, and the diameter of the bubbles generated during the mechanical stirring is 8-1. It is understood that the bubbles generated by electrolysis have a higher ability to trap fine impurity particles than the latter two, and the dispersion degree of the bubbles is high, and the bubbles float up as carriers adhering to suspended solids in water, thereby easily removing contaminants. The electrolytic air flotation can remove hydrophobic pollutants in the wastewater and can also remove hydrophilic pollutants in the wastewater.

The treatment of sewage by flocculation generally requires the use of suitable flocculation equipment. Whereas flocculation plants are generally provided with electrode plates. The electrode plate can be made of different materials according to different substances to be removed, and has the effects of strong flocculation, strong oxidation, strong reduction, strong air flotation and the like so as to achieve the best treatment effect, and iron, aluminum, titanium, graphite, lead dioxide and the like are frequently applied. Each material has its own application area, and the design of the electroflocculation apparatus and the choice of electrode plates are determined by extensive research and development trials and extensive engineering practice experience. According to statistics, the electric flocculation equipment is used for treating oil, high-concentration and difficult-biochemical-degradation organic matters, colloid particles, various impurity particles and SiO in wastewater₂And the heavy metal ions and the like have excellent removal effect.

However, the conventional electric flocculation equipment has the following defects in use: 1. the service life of the electrode plates is low, particularly one of the electrode plates is wrapped by floccules in a short time, and the other electrode plate is seriously corroded; 2. in the tank for flocculation reaction, the upper part is easy to form a thick dirt layer which is difficult to clean, and the bulky dirt layers can greatly reduce the speed of the flocculation reaction.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a flocculation production line, and the technical scheme is that the polarity of a reverse device is changed by the reverse device, so that the polarities of a first polar plate and a second polar plate which form each group of polar plates in each electrolytic cell are alternately positive and negative, and on the premise of not influencing flocculation reaction, the situation that one polar plate is quickly corroded and the other polar plate is quickly wrapped is avoided, the efficiency of the flocculation reaction is greatly improved, and the service life of the polar plate is prolonged.

In order to solve the technical problems, the invention provides the following technical scheme:

the utility model provides a flocculation assembly line, includes the electrolytic bath, be equipped with at least a set of plate electrode in the electrolytic bath, the plate electrode still includes the device of falling one's grade including relative first polar plate and the second grade board that sets up, the device of falling one's grade includes first output and second output, first polar plate with the second grade board respectively with first output with second output electric connection.

As a preferable scheme of the flocculation assembly line, at least one electrolytic cell is arranged, a water inlet and a water outlet are respectively arranged at two ends of the electrolytic cell, and the water inlet of the electrolytic cell positioned at the upstream is communicated with the water outlet of the electrolytic cell positioned at the downstream.

As a preferable scheme of the flocculation production line, the water outlet of the electrolytic cell positioned at the upstream is higher than the water inlet of the electrolytic cell positioned at the downstream.

As a preferable scheme of the flocculation production line, the electrolytic cell is provided with a funnel-shaped conical tip bottom, and a slag discharge port is arranged at the bottom end of the conical tip bottom.

As a preferable scheme of the flocculation production line, the top end of the electrolytic cell is provided with an overflow port, the periphery of the overflow port is provided with an overflow trough, the overflow trough is communicated with the overflow port, and the overflow trough is provided with a drain outlet.

As a preferable scheme of the flocculation production line, the flocculation production line further comprises concentration tanks, one concentration tank is arranged on the side part of each electrolytic tank, and the drain outlet is communicated with the concentration tanks.

As a preferable scheme of the flocculation assembly line, the flocculation assembly line further comprises a primary sedimentation tank, wherein one end of the primary sedimentation tank is provided with a liquid outlet, and the liquid outlet is communicated with a water inlet of one of the electrolytic tanks.

As a preferred scheme of the flocculation assembly line, the primary sedimentation tank comprises a tank body, a liquid outlet, a water inlet tank, a mud bucket, a mud discharge pipe, a floating slag vertical plate and a floating slag tank, wherein the liquid outlet is arranged at one end of the tank body, at least one water inlet tank is arranged at the other end of the tank body, the mud bucket is arranged at the bottom end of the tank body, the mud bucket is arranged close to the water inlet tank, the mud discharge pipe is arranged on the mud bucket, the floating slag vertical plate is arranged inside the tank body, and the floating slag tank is arranged on the floating slag vertical.

As an optimal scheme of the flocculation assembly line, a flow baffle is arranged inside the tank body and is close to the water inlet tank, an overflow weir is arranged at one end, far away from the water inlet tank, of the tank body, and a liquid outlet is arranged on the overflow weir.

As a preferable scheme of the flocculation assembly line, a mud scraping assembly is arranged on a primary sedimentation tank, a mud scraping plate is arranged on the mud scraping assembly, the mud scraping plate is elastic, a serrated plate is arranged on the mud scraping plate and is in contact with the bottom end of a tank body, the mud scraping assembly comprises a rail, a supporting plate, a mud scraping driving motor, a belt transmission module, a pulley, a pressing air cylinder, a pressing wheel, a guide plate and a guide wheel, an opening is formed in the top end of the tank body, the rail is arranged at the edge of the opening, the supporting plate is arranged at the top of the rail, the mud scraping driving motor is arranged on the supporting plate, the belt transmission module is in transmission connection with the output end of the mud scraping driving motor, the pulley is in transmission connection with the output end of the belt transmission module, the pulley is in sliding connection with the rail, the pressing air cylinder is arranged, pinch roller and belt drive module butt are equipped with at least one in the backup pad the deflector, the deflector setting is at the lateral part of cell body, is equipped with on the deflector the leading wheel, leading wheel and the outer wall sliding connection of cell body.

Compared with the prior art, the invention has the beneficial effects that:

the wastewater flows in from one end of the water inlet tank of the tank body and slowly flows along the length direction, suspended matters in water are removed under the gravity settling action of particles or flocs in the water, and the water flows out from the water outlet. Adopt the overflow weir in order to guarantee that clarified water evenly flows along whole disconnected at the liquid outlet for advance, go out water evenly, pond rivers are stable, improve the effective volume of cell body, reduce turbulent influence simultaneously, in order to be favorable to improving sedimentation efficiency, flow into the preliminary sedimentation pond earlier with waste water and carry out the sedimentation of stewing of short time, in order to discharge partial filth and sediment in earlier stage, lighten the burden for follow-up operation. The water inlet of the electrolytic cell positioned at the most upstream is connected with the wastewater to be treated, the water outlet of the electrolytic cell positioned at the most downstream discharges the finally treated water, the water outlet of the electrolytic cell positioned at the most upstream is arranged higher than the water inlet of the electrolytic cell positioned at the most downstream, namely, the treated wastewater is enabled to flow from the water inlet of the electrolytic cell positioned at the most downstream through the height differenceThe flow flows from upstream to downstream. The sewage layer floating on the electrolytic cell overflows outwards from the overflow port on the upper edge of the electrolytic cell and flows into the overflow tank, the sewage discharge port is communicated with the concentration tank, and the sewage flowing into the concentration tank can be compressed into blocks after being treated and precipitated periodically to be used as fertilizer. For preventing the polar plate that the system caused when long-time operation from corroding or some have viscidity material to glue on the polar plate in the waste water and reduce polar plate operating efficiency, set up regularly for the polar plate and fall the utmost point, can automatic switch over to falling the utmost point after continuous operation 1h to make original positive pole become the negative pole, original negative pole becomes the positive pole, under the effect of electric current, pollutant etc. on the polar plate then can drop to the waste water of this system automatically, is oxidized into micromolecular organic matter or directly mineralizes into CO by the electric catalysis, thereby the operating efficiency of polar plate is reduced₂+H₂And O, thereby achieving the purpose of cleaning the electrode plate. Gas generated in the operation process enters the tail gas absorption device through the pipeline to be absorbed, alkali liquor is filled in the tail gas absorption device, and the tail gas absorption device is periodically replaced after being saturated in adsorption.

The flocculation assembly line has long service life and is easy to clean. This flocculation assembly line passes through the polarity of the device of falling the device transform of falling the device of falling and the device of falling, make the polarity that constitutes the first polar plate of every group plate electrode and second grade board in turn in every electrolytic bath be anodal and negative pole, under the prerequisite that does not influence flocculation reaction, avoid a polar plate to corrode fast and another polar plate by the condition of faster parcel, the efficiency of flocculation reaction has greatly been improved, and the life of polar plate has been prolonged, the mode that adopts to fall utmost carries out regular washing and activation to the plate electrode, make the pollutant attached to the electrode in time break away from the electrode surface. Meanwhile, the flocculation reaction is decomposed by adding the number of the electrolytic cells, so that the phenomenon of generating a large amount of dirt in the same electrolytic cell is avoided, and the electrolytic cells are convenient to clean in time.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of an electrolytic cell of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic diagram of a reverse stage apparatus of the present invention;

FIG. 5 is a schematic view of the structure at the electrolytic cell in the present invention;

FIG. 6 is a side view of the primary sedimentation tank of the present invention;

FIG. 7 is a schematic cross-sectional view taken along line B-B of FIG. 6;

FIG. 8 is a schematic view of the harbor at A in FIG. 7;

FIG. 9 is a schematic structural view of a primary sedimentation tank in the present invention;

FIG. 10 is an enlarged schematic view at B of FIG. 9;

fig. 11 is a schematic view of the structure of the mud scraper of the present invention.

The reference numbers in the figures are:

10-an electrolytic cell; 11-a water inlet; 12-a water outlet; 13-an overflow launder; 131-a sewage draining outlet; 132-an overflow port; 14-base of the pyramid; 141-a slag discharge port;

20-an electrode plate; 21-a first plate; 22-a second stage plate;

30-a reverse stage device; 31-a first output; 32-a second output;

40-a concentration tank;

50-a primary sedimentation tank; 51-a liquid outlet; 52-water inlet tank; 53-flow baffle; 54-a mud bucket; 55-a sludge discharge pipe; 56-a scum vertical plate; 57-scum trough; 58-overflow weir;

60-a mud scraping assembly; 61-track; 62-a support plate; 63-a mud scraping driving motor; 64-a belt drive module; 65-a pulley; 66-a compacting cylinder; 67-pinch rollers; 68-a guide plate; 69-a guide wheel;

70-a mud scraper.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, the flocculation line includes an electrolytic cell 10, at least one set of electrode plates 20 is disposed in the electrolytic cell 10, and each set of electrode plates 20 includes a first electrode plate 21 and a second electrode plate 22 disposed oppositely. It is understood that the first plate 21 and the second plate 22 are disposed in parallel in the same electrolytic cell 10, and the electrode plates 20 are staggered in the order of the first plate 21 and the second plate 22. Meanwhile, the electrolytic cell 10 has a water inlet 11 and a water outlet 12. In this embodiment, the water inlet 11 is disposed at the upper end of the electrolytic cell 10, and the water outlet 12 is disposed at the upper portion of the electrolytic cell 10 and located at the other side of the water inlet 11.

Referring to fig. 2, 3 and 4, the flocculation line further includes a reverse stage device 30, in this embodiment, the reverse stage device 30 is a positive-negative converter of direct current. The positive and negative electrode converter can adopt the market products, and the structure and the principle are the same as the prior art. The inverting device 30 includes a first output terminal 31 and a second output terminal 32, and the first pole plate 21 and the second pole plate 22 are electrically connected to the first output terminal 31 and the second output terminal 32, respectively. The input end of the positive-negative electrode converter is connected to a direct current power supply, and the positive-negative electrode converter changes the polarity of the first output end 31 and the second output end 32 according to a certain rule, so that the polarities of the first pole plate 21 and the second pole plate 22 are continuously changed. For example, in the 1 st hour, the first electrode plate 21 is a positive electrode plate, and the second electrode plate 22 is a negative electrode plate; in the next 2 nd hour, the first electrode plate 21 is a negative electrode plate and the second electrode plate 22 is a positive electrode plate. And the change is performed in turn. Therefore, the condition that one polar plate is corroded quickly and the other polar plate is wrapped quickly is avoided, the efficiency of flocculation reaction is greatly improved, and the service life of the polar plate is prolonged. The electrode plate 20 is periodically cleaned and activated in a reverse electrode manner, so that pollutants attached to the electrode can be timely separated from the surface of the electrode.

Referring to fig. 2 and 3, at least one electrolytic cell 10 is provided, in this embodiment, three electrolytic cells 10 are provided, a water inlet 11 and a water outlet 12 are respectively provided at two ends of each electrolytic cell 10, the water inlet 11 of the upstream electrolytic cell 10 is communicated with the water outlet 12 of the downstream electrolytic cell 10, and obviously, the water inlet 11 of the most upstream electrolytic cell 10 is connected with wastewater to be treated, and the water outlet 12 of the most downstream electrolytic cell 10 discharges finally treated water. Of course, the finally treated water should be subjected to relevant detection, and after the finally treated water is qualified, the finally treated water can be discharged or reused. Therefore, the flocculation reaction is carried out by adopting a decomposition mode, a centralized treatment mode is avoided, the condition that the dirt is centralized in a small range is greatly reduced, and the treatment of the dirt, especially the floating dirt, is convenient. The water outlet 12 of the upstream electrolytic cell 10 is arranged higher than the water inlet 11 of the downstream electrolytic cell 10, i.e. the treated wastewater automatically flows from upstream to downstream by the height difference.

Referring to figures 2, 3 and 5, the cell 10 has a funnel-shaped conical base 14, again to facilitate automatic flow of wastewater from upstream to downstream. It will be appreciated that the water inlet 11 of the same electrolytic cell 10 is arranged higher than the water outlet 12 of the same electrolytic cell 10. The bottom end of the pointed cone bottom 14 is provided with a slag discharge port 141, which is convenient for discharging the sediments in the electrolytic cell 10 periodically.

The top end of the electrolytic cell 10 is provided with an overflow port 132, the periphery of the overflow port 132 is provided with an overflow trough 13, the overflow trough 13 is communicated with the overflow port 132, and the overflow trough 13 is provided with a drain outlet 131, namely, a dirt layer floating on the electrolytic cell 10 can overflow from the overflow port 132 on the upper edge of the electrolytic cell 10 and flow into the overflow trough 13. The flocculation assembly line further comprises a concentration tank 40, the side part of each electrolytic tank 10 is provided with the concentration tank 40, the drain outlet 131 is communicated with the concentration tank 40, and sewage flowing into the concentration tank 40 can be compressed and processed into blocks after being treated and precipitated regularly for being used as fertilizer.

Referring to fig. 1, the flocculation line further includes a primary sedimentation tank 50, wherein a liquid outlet 51 is disposed at one end of the primary sedimentation tank 50, and the liquid outlet 51 is communicated with the water inlet 11 of one of the electrolytic cells 10. The wastewater is firstly discharged into the primary sedimentation tank 50, and is subjected to standing sedimentation for a short time, so that partial dirt and sediments are discharged in advance, and the burden of subsequent operation is reduced.

Because the electrolytic cell 10 contains N electrode plates 20, a catalyst column plate can be arranged between a first electrode plate 21 and a second electrode plate 22 of the electrode plates 20, the electrolytic cell 10 is divided into N +1 compartments from head to tail by N groups of electrode plates 20, and the electrode plates 20 are staggered according to the first electrode plate 21 and the second electrode plate 22. The pretreated sewage enters the electrolytic cell 4 and is treated step by step in a grading way, and when the sewage flows through the positive electrode and the negative electrode, the sewage reacts on the surface of the electrode, and HClO, HCl and H are generated in the process₂O₂The products have strong oxidizing property and can oxidize macromolecular organic matters in the wastewater into micromolecular organic matters or directly mineralize the micromolecular organic matters into CO₂+H₂O, thereby reducing the COD of the wastewater, improving the B/C of the wastewater and providing a stable water inlet source for a subsequent biochemical system.

The inverting device 4 is a positive and negative converter of direct current. Because the electrolytic cell 10 is applied to organic wastewater with high COD concentration and can form pollutants on the surface of the electrode after being soaked in the wastewater for a long time, the service life of the electrode is shortened, and the treatment efficiency is influenced, the electrode is periodically cleaned and activated in the catalytic oxidation device in a reverse electrode mode, so that the pollutants attached to the electrode are timely separated from the surface of the electrode. The time and frequency of pole-reversing is in direct proportion to the COD of the treated wastewater, and the higher the COD of the wastewater, the longer the time of pole-reversing is. In this embodiment, the set pole-reversing time is 1 h.

The surface of the catalyst column plate is of a grid structure, the water-facing surface at the bottom of the catalyst column plate is provided with a slope, the angle of the slope is 45 degrees, the mesh of the grid is 2-3, and the catalyst in the catalyst column plate is IR-CF. The net structure increases the contact area between the wastewater and the catalyst, thereby increasing the wastewater treatment efficiency. The catalyst filled in the catalyst column is an IR-CF type high-efficiency catalyst which mainly comprises three parts, namely an active component, a carrier and a cocatalyst, wherein the active component is a mixture of Ni, modified active aluminum and Ti, the carrier is gamma-Al 2O3, and the auxiliary agent is activated carbon. The combined action of the modified active aluminum, Ni and Ti can accelerate the decomposition speed of chemical bonds such as C-C, C-N, C-S in the wastewater under the electrolysis condition, and after the chemical bonds are hydrogenolyzed into hydrocarbon organic matters under the action of electrooxidation, the COD and toxicity of the wastewater are greatly reduced, and the biodegradability is greatly improved.

For preventing the polar plate that the system caused when long-time operation from corroding or some have viscidity material to glue on the polar plate in the waste water and reduce polar plate operating efficiency, set up for polar plate 20 and regularly fall the utmost point, can automatic switch over to falling the utmost point after continuous operation 1h to make original positive pole become the negative pole, original negative pole becomes the positive pole, under the effect of electric current, the pollutant etc. on the polar plate then can drop to the waste water of this system automatically, is oxidized into micromolecular organic matter or is directly mineralized into CO by the electric catalysis, thereby the operating efficiency of polar plate is reduced₂+H₂O, thereby achieving the purpose of cleaning the electrode plate 20. Gas generated in the operation process enters the tail gas absorption device through the pipeline to be absorbed, alkali liquor is filled in the tail gas absorption device, and the tail gas absorption device is periodically replaced after being saturated in adsorption.

The electrolytic cell 10 can be further connected with a tail gas absorption device, the tail gas absorption device comprises a tail gas absorption pipeline, a condenser, a tank body and a sprayer which are sequentially connected, a purified gas outlet is arranged at the top of the electrolytic cell 10, and volatile gases such as H can be generated inevitably when macromolecular organic matters are degraded in the electrocatalytic oxidation process₂S、Cl₂、H₂、CH₄If the gases are not collected and absorbed in a centralized way, the gases can cause great pollution to the environment of a factory area, so that the health of human bodies is influenced, the gases firstly enter a condenser through a tail gas suction inlet and a pipeline, the temperature of the gases is reduced, the condensation of harmful substances in the tail gas is accelerated, the gases enter a sprayer of a tank body, the gases uniformly and stably enter tail gas absorption liquid, namely alkali liquor, the purification rate of the tail gas after the gases are treated can reach more than 90 percent, and the national emission requirements are met.

The structure can promote uniform water distribution and reduce dead zones, thereby reducing phenomena such as dead angles, short flows, channeling and the like which may occur in the running process of the system and ensuring that the water quality of the wastewater flows more uniformly in the electrolytic cell 10. Meanwhile, the method can prevent channeling and increase a certain impact speed to facilitate the later water inflow and create better hydraulic conditions for the downstream electrolytic cell 10. Due to the existence of the pointed cone bottom 14, the wastewater entering the reactor flows through the whole reactor in an upward flow and downward flow mode, so that the effective volume of the electrolytic cell is effectively improved, the probability that the hydraulic retention time possibly occurring in the actual operation process is less than the theoretical retention time is reduced, and the treatment effect is increased to a certain extent.

Referring to fig. 6 and 7, the primary sedimentation tank 50 includes a tank body, a liquid outlet 51, a water inlet 52, a mud bucket 54, a mud pipe 55, a floating slag vertical plate 56 and a floating slag groove 57, wherein the liquid outlet 51 is disposed at one end of the tank body, the water inlet 52 is disposed at the other end of the tank body, the mud bucket 54 is disposed at the bottom end of the tank body, the mud bucket 54 is disposed near the water inlet 52, the mud pipe 55 is disposed on the mud bucket 54, the floating slag vertical plate 56 is disposed inside the tank body, and the floating slag groove 57 is disposed on the floating slag vertical plate 56.

Referring to fig. 7, a flow baffle 53 is disposed inside the tank body, and the flow baffle 53 is disposed near the water inlet tank 52. Referring to fig. 8, an overflow weir 58 is disposed at an end of the tank body away from the water inlet tank 52, and a liquid outlet 51 is disposed on the overflow weir 58.

The primary sedimentation tank 50 is a sedimentation tank based on a Harzhen shallow layer theory, and is characterized in that sedimentation pipes are horizontally arranged and flow along a horizontal line, suspended matters are vertically separated, and sedimentation and separation functions are realized. During installation, the prefabricated horizontal pipe modules can be assembled into a horizontal pipe sedimentation tank, namely the tank body, wastewater flows in from one end of a water inlet tank 52 of the tank body, slowly flows along the length direction, suspended matters in water are removed under the gravity settling action of particles or flocs in the water, and the water flows out from the other end. The horizontal pipe sedimentation and separation device is divided into a plurality of layers, including the branch zone of intaking, the water outlet area, the settling zone, store up mud district and buffer zone five parts, the area of depositing has been increased from this, the settling distance of suspended solid has been reduced, suspended solid settling time has been shortened, the inside fender stream board 53 that is equipped with of cell body, the clearance between fender stream board 53 and the intake antrum 52 has just constituted the mud slit and the fender stream region of cell body, the mud slides down at the bottom of the side, rethread mud slit slips into following bagger 54, the suspended solid is in bagger 54 in time with the separation of water, and discharge from mud pipe 55, the mud condition of reversible sediment of suspended solid has been improved in setting up of bagger 54, and the suspended solid has been avoided blockking up the emergence of pipeline and alum running phenomenon. An automatic flushing system without stopping water is arranged, so that the problem of sludge adhesion and accumulation on the wall surface of the tank body is solved. The overflow weir 58 is adopted at the liquid outlet 51 to ensure that the clarified water flows out uniformly along the whole break, so that the water inlet and outlet are uniform, the water flow in the tank is stable, the effective volume of the tank body is improved, and the turbulent fluctuation influence is reduced, thereby being beneficial to improving the sedimentation efficiency. The dirt layer floating in the wastewater is collected by the scum trough 57.

Referring to fig. 7, 9, 10 and 11, a mud scraping assembly 60 is arranged on the primary sedimentation tank 50, a mud scraping plate 70 is arranged on the mud scraping assembly 60, the mud scraping plate 70 has elasticity, a saw-toothed plate is arranged on the mud scraping plate 70 and contacts with the bottom end of the tank body, the mud scraping assembly 60 comprises a rail 61, a support plate 62, a mud scraping driving motor 63, a belt driving module 64, a pulley 65, a pressing cylinder 66, a pressing wheel 67, a guide plate 68 and a guide wheel 69, an opening is arranged at the top end of the tank body, the rail 61 is arranged at the edge of the opening, the support plate 62 is arranged at the top of the rail 61, the mud scraping driving motor 63 is arranged on the support plate 62, the belt driving module 64 is connected at the output end of the mud scraping driving motor 63 in a transmission manner, the pulley 65 is connected at the output end of the belt driving module 64 in a transmission manner, the pulley 65 is slidably connected with the rail 61, the, pinch roller 67 and belt drive module 64 butt are equipped with at least one deflector 68 on the backup pad 62, and deflector 68 sets up the lateral part at the cell body, is equipped with leading wheel 69 on the deflector 68, and leading wheel 69 and the outer wall sliding connection of cell body.

When scraping mud driving motor 63 during operation, drive pulley 65 through belt drive module 64 and rotate, consequently pulley 65 just can walk along track 61, has consequently changed and has scraped mud subassembly 60 along the position of cell body along length direction, and the mud scraper 70 adopts elastic material to make, consequently when scraping mud subassembly 60 and sliding along length direction along the cell body, the serration plate of mud scraper 70 terminal can become scrapes the mud of the heavy mud of cell body bottom in the mud bucket 54. The side of the belt transmission module 64 is provided with a pressing cylinder 66, and when the pressing cylinder 66 works, the pressing wheel 67 is pushed to press the transmission belt in the belt transmission module 64, so that the transmission belt is always tensioned, and the belt transmission module 64 is ensured to have a transmission function. The guide wheels 69 are provided to allow the support plate 62 to run more stably while sliding along the rails 61.

The working principle of the invention is as follows: the wastewater flows in from one end of the tank body water inlet tank 52, slowly flows along the length direction, removes suspended matters in water by the gravity settling action of particles or flocs in the water, and the water flows out from the liquid outlet 51. The overflow weir 58 is adopted at the liquid outlet 51 to ensure that the clarified water flows out uniformly along the whole break, so that the water inlet and outlet are uniform, the water flow in the tank is stable, the effective volume of the tank body is improved, the turbulent influence is reduced, the sedimentation efficiency is improved, the wastewater flows into the primary sedimentation tank 50 firstly to be subjected to standing sedimentation for a short time, partial dirt and sediment are discharged in advance, and the burden is reduced for subsequent operation. The water inlet 11 of the most upstream electrolytic cell 10 is connected with the waste water to be treated, the water outlet 12 of the most downstream electrolytic cell 10 discharges the finally treated water, and the water outlet 12 of the upstream electrolytic cell 10 is arranged higher than the water inlet 11 of the downstream electrolytic cell 10, namely, the treated waste water automatically flows from upstream to downstream through the height difference. The sewage layer floating on the electrolytic cell 10 overflows from the overflow port 132 on the upper edge of the electrolytic cell 10 to flow into the overflow tank 13, the sewage discharge port 131 is communicated with the concentration tank 40, and the sewage flowing into the concentration tank 40 can be compressed and processed into blocks after being treated and precipitated periodically to be used as fertilizer. For preventing the polar plate that the system caused when long-time operation from corroding or some have viscidity material to glue on the polar plate in the waste water and reduce polar plate operating efficiency, set up for polar plate 20 and regularly fall the utmost point, can automatic switch over to falling the utmost point after continuous operation 1h to make original positive pole become the negative pole, original negative pole becomes the positive pole, under the effect of electric current, the pollutant etc. on the polar plate then can drop to the waste water of this system automatically, is oxidized into micromolecular organic matter or is directly mineralized into CO by the electric catalysis, thereby the operating efficiency of polar plate is reduced₂+H₂O, thereby achieving the purpose of cleaning the electrode plate 20. Gas generated in the operation process enters the tail gas absorption device through the pipeline for absorption, and the tail gas absorption device is filled with alkali liquor and is saturated in adsorptionAnd then replaced regularly.

The flocculation assembly line has long service life and is easy to clean. This flocculation assembly line passes through the polarity of the first output 31 of the device 30 transform of falling the rank and the second output 32 for the first polar plate 21 that constitutes every group plate electrode 20 in every electrolytic bath 10 and the polarity of second grade board 22 are anodal and negative pole in turn, under the prerequisite that does not influence flocculation, avoid a polar plate to corrode fast and the condition of another polar plate by faster parcel, the efficiency of flocculation has greatly been improved, and the life of polar plate has been prolonged, the mode that adopts to fall the utmost point carries out regular washing and activation to plate electrode 20, make the pollutant attached to the electrode in time break away from the electrode surface. Meanwhile, the flocculation reaction is decomposed by adding the electrolytic cells 10, so that the phenomenon that a large amount of dirt is generated in the same electrolytic cell 10 is avoided, and the electrolytic cells 10 are convenient to clean in time.

Claims

1. Flocculation assembly line, including electrolytic bath (10), be equipped with at least a set of plate electrode (20) in electrolytic bath (10), plate electrode (20) are including relative first polar plate (21) and the second board (22) that set up, its characterized in that, still include reverse device (30), reverse device (30) are including first output (31) and second output (32), first polar plate (21) with second board (22) respectively with first output (31) with second output (32) electric connection.

2. A flocculation line according to claim 1, wherein there is at least one electrolytic cell (10), the two ends of the electrolytic cell (10) being provided with a water inlet (11) and a water outlet (12), respectively, the water inlet (11) of the electrolytic cell (10) located upstream being in communication with the water outlet (12) of the electrolytic cell (10) located downstream.

3. A flocculation line according to claim 2, wherein the water outlet (12) of an upstream cell (10) is arranged higher than the water inlet (11) of a downstream cell (10).

4. A flocculation line according to claim 3, wherein the electrolytic cell (10) has a funnel-shaped conical tip bottom (14), and a slag discharge opening (141) is provided at the bottom end of the conical tip bottom (14).

5. A flocculation assembly line according to claim 4, wherein an overflow port (132) is arranged at the top end of the electrolytic cell (10), an overflow trough (13) is arranged at the periphery of the overflow port (132), the overflow trough (13) is communicated with the overflow port (132), and a drain outlet (131) is arranged on the overflow trough (13).

6. A flocculation line according to claim 5, further comprising concentration tanks (40), one concentration tank (40) being provided at the side of each electrolytic cell (10), the discharge outlet (131) being in communication with a concentration tank (40).

7. A flocculation line according to claim 6, further comprising a primary sedimentation tank (50), wherein one end of the primary sedimentation tank (50) is provided with a liquid outlet (51), and the liquid outlet (51) is communicated with the water inlet (11) of one of the electrolytic cells (10).

8. The flocculation assembly line of claim 7, wherein the primary sedimentation tank (50) comprises a tank body, a liquid outlet (51), a water inlet tank (52), a mud bucket (54), a mud discharge pipe (55), a scum vertical plate (56) and a scum groove (57), the liquid outlet (51) is arranged at one end of the tank body, the water inlet tank (52) is arranged at the other end of the tank body, the mud bucket (54) is arranged at the bottom end of the tank body, the mud bucket (54) is arranged close to the water inlet tank (52), the mud discharge pipe (55) is arranged on the mud bucket (54), the scum vertical plate (56) is arranged inside the tank body, and the scum groove (57) is arranged on the scum vertical plate (56).

9. The flocculation line of claim 8, wherein a flow baffle (53) is disposed inside the tank body, the flow baffle (53) is disposed near the water inlet tank (52), an overflow weir (58) is disposed at an end of the tank body far from the water inlet tank (52), and the overflow weir (58) is provided with the liquid outlet (51).

10. The flocculation assembly line of claim 9, wherein a mud scraping assembly (60) is disposed on the primary settling tank (50), a mud scraping plate (70) is disposed on the mud scraping assembly (60), the mud scraping plate (70) has elasticity, a serrated plate is disposed on the mud scraping plate (70), the serrated plate contacts with the bottom end of the tank body, the mud scraping assembly (60) comprises a rail (61), a support plate (62), a mud scraping drive motor (63), a belt drive module (64), a pulley (65), a pressing cylinder (66), a pressing wheel (67), a guide plate (68) and a guide wheel (69), an opening is disposed at the top end of the tank body, the rail (61) is disposed at the edge of the opening, the support plate (62) is disposed at the top of the rail (61), the mud scraping drive motor (63) is disposed on the support plate (62), and an output end of the mud scraping drive motor (63) is in transmission connection with the belt drive module (64), the output end transmission of belt drive module (64) is connected with pulley (65), pulley (65) and track (61) sliding connection, the lateral part of belt drive module (64) is equipped with compress tightly cylinder (66), the output shaft transmission that compresses tightly cylinder (66) is connected with pinch roller (67), pinch roller (67) and belt drive module (64) butt are equipped with at least one on backup pad (62) deflector (68), deflector (68) set up the lateral part at the cell body, are equipped with on deflector (68) deflector (69), deflector (69) and the outer wall sliding connection of cell body.