CN114772694B - Hydraulic vortex micro-vortex flocculation combined with siphon surface filtration integrated wastewater treatment system - Google Patents

Abstract

A hydraulic vortex and micro vortex flocculation combined siphon surface filtration integrated wastewater treatment system comprises a micro vortex reinforced flocculation area, a suspension clarification separation area and a siphon surface filtration area, wherein wastewater sequentially passes through; the micro vortex reinforced flocculation area mainly makes a large amount of micro vortices which promote particles to collide and flocculate in a mode that tangential nozzle incident water flow whirls to pass through a turbulent grid; the suspension clarification separation zone further adsorbs and intercepts micro flocs through contact flocculation; when the water outlet requirement is high or the water outlet of the suspension clarification separation area does not meet the discharge standard, the raw water wrapped with the micro-floccules can further move to the siphon surface filtering area to perform guaranteed filtering on the wastewater treatment. The siphon water outlet is realized by utilizing the self height of the equipment, so that the double-province requirement of energy conservation and land conservation is realized; the treatment requirements of large water quantity and high standard are fundamentally realized.

Description

Hydraulic vortex micro-vortex flocculation combined with siphon surface filtration integrated wastewater treatment system

technical field

The invention relates to the field of tunnel wastewater treatment, in particular to a hydraulic vortex micro-vortex flocculation combined with siphon surface filtration integrated wastewater treatment system.

Background technique

With the development of the economy and the increase in the demand for daily traffic, the construction of tunnels has increased dramatically. Most of the tunnel projects are located in mountainous and hilly areas, and some are even located in drinking water sources or water conservation areas. During the construction process, a large amount of construction wastewater will be generated with the emergence of tunnel water gushing. This type of wastewater is usually accompanied by a large amount of rock dust. The larger-sized suspended particles can be settled in the third-stage sedimentation tank at the tunnel entrance. The remaining particles with a particle size of 1-100 μm must be removed by means of coagulation and sedimentation. If the tunnel wastewater is discharged directly without treatment, it will cause irreversible damage to the vegetation and water bodies near the tunnel.

Due to the limitations of geological conditions and construction methods, the water quality of tunnel wastewater varies. The traditional process of wastewater treatment during tunnel construction is complicated, the construction period is long, it cannot be reused, and problems such as waste of land are difficult to solve. Most tunnel wastewater treatment processes are relatively simple. The most common method is to introduce the wastewater into the sedimentation tank and discharge it directly after the suspended matter settles, which cannot guarantee the treatment effect at all. Since the hinterland of the tunnel excavation area is usually not large, the usable area is very limited, and it is often difficult to set up a large sedimentation tank, which leads to a serious shortage of sedimentation time, and can only remove about 50% to 70% of suspended solids in the wastewater. Therefore, how to achieve efficient treatment of tunnel wastewater while saving land occupation has become the key to this treatment technology.

Contents of the invention

In order to solve the problems of high load, small site, and high-precision treatment of tunnel wastewater equipment, the present invention provides a hydraulic vortex micro-vortex flocculation combined with siphon surface filtration integrated wastewater treatment system.

To achieve the above object, the technical scheme that the present invention takes is:

A hydraulic vortex micro-vortex flocculation combined with siphon surface filtration integrated wastewater treatment system. The system mainly includes a micro-vortex enhanced flocculation area, a suspension clarification separation area, and a siphon surface filtration area through which the wastewater passes sequentially; the micro-vortex enhanced flocculation area mainly creates a large number of micro-vortices that promote particle collision and flocculation by means of a tangential nozzle incident water flow swirl passing through the spoiler grid; the suspension clarification separation area further absorbs and intercepts micro flocs through contact flocculation; The raw water entrained by tiny flocs will further move to the siphon surface filtration area, and the filter cloth filter has the characteristics of high packing density and high filtration precision to realize the guaranteed filtration of wastewater treatment; at the same time, the higher height of the clarification equipment is used as the driving pressure of the filter cloth filter, that is, the siphon effect is used to provide the pressure required for surface filtration to achieve unpowered water discharge.

The micro-vortex enhanced flocculation zone mainly includes a micro-vortex reaction bucket, the bottom of the micro-vortex reaction tank is a closed cone-shaped micro-vortex sludge hopper, the micro-vortex reaction bucket above the micro-vortex sludge bucket is provided with several tangential water inlets, and the tangential water inlets are set at the upper edge of the micro-vortex sludge bucket at 100-150mm; the micro-vortex reaction bucket at 100-120mm above the tangential water inlet is provided with a spoiler grid through a grid fixing plate; An inverted conical diversion cover is arranged concentrically on the upper part of the vortex reaction barrel; several tangential water inlets are connected to the sewage water supply pipe, and a waste water lifting pump is arranged on the sewage water supply pipe; one end of the sludge discharge pipe in the micro-vortex area is connected to the sludge hopper in the micro-vortex area, and the other end is provided with a valve for the sludge discharge pipe in the micro-vortex area.

The spoiler grids are arranged in a cross shape, a star shape or a Pozieri pattern; the spacing of the spoiler grids is 10-15mm when the cross is arranged;

The heights of the spoiler grids increase sequentially from the inside to the outside in a step-like shape, and increase according to a heightening range of 1:1.2-1.5.

The spoiler bars are square or diamond-shaped, with sharp corners facing the direction of the water flow.

The inlet flow velocity in the tangential water inlet is 1.5-3.5m/s.

The main structure of the suspension clarification separation area is a suspension clarification column, and the micro-vortex reaction tank is placed in it, and the two are coaxially arranged; the cavity between the upper end of the suspension clarification column and the upper end of the micro-vortex reaction tank is a clear water safety zone; the clear water area is provided with an outlet pipe in the clear water safety area, which is controlled by the outlet pipe valve of the clear water area and is equipped with a turbidity meter for the outlet of the suspension clarification area; The mud pipe is provided with a mud discharge pipe valve in the suspension clarification area.

The main structure of the siphon-type surface filtration area is a trough-type filter cloth filter, and its lower part is connected with the suspension clarification column as a whole; a siphon-type central outlet pipe is installed in the trough-type filter-cloth filter through the outlet pipe support rod, and a filter cloth filter outlet pipe valve and a filter cloth filter outlet water turbidimeter are installed in sequence at the outlet of the siphon-type central outlet pipe; several filter sheets are installed on the siphon-type central outlet pipe, and the two are connected through.

The filter cloth filter backwash pump communicates with the suction filter cloth cleaning clip through the filter cloth flushing water supply pipe, and the suction filter cloth cleaning clip is arranged on both sides of the filter filter.

The present invention has the following beneficial effects:

The invention adopts the combination technology of micro-vortex enhanced flocculation + suspension clarification + surface filtration to process wastewater with high efficiency and high precision. The micro-vortex intensification process is mainly completed by spoiler bars, that is, the whole reactor is powered by a water pump, and the water pump is used to pump high-speed water flow into the reactor in the form of swirling flow, and the purpose of mass production of vortexes is realized by using the rotating water flow to continuously collide with the spoiler bars. The particles in the wastewater continuously increase the number of collisions under the action of a large number of vortex shearing and centrifugal inertia to achieve the purpose of enhanced flocculation. At the same time, the use of grids accelerates the process of particle densification and formation of flocs, which increases the overall hydraulic load of the micro-vortex enhanced flocculation section. The structure of "floc turning tank" is adopted to make the flocs formed in the micro-vortex flocculation section enter the suspension clarification process area, and the contact flocculation of active sludge is used to further realize the interception of tiny particles in the wastewater. At the same time, because the grid bar continuously breaks and re-flocculates the formed flocs, it maintains the characteristics of high density and good settling performance, thereby increasing the rising flow rate of the wastewater in the suspension clarification area, providing guarantee for the high-load treatment of the equipment. Further use the surface filtration technology to filter and intercept the particles escaping from the suspension clarification process area. The filter cake formed by the deposition of particles on the surface of the filter cloth is used to adsorb and bond the particles in the wastewater, so as to improve the accuracy of the water outlet and reduce the pollution of the filter cloth. And use the height difference of the equipment to form a siphon water outlet on the surface of the filter cloth to reduce the total energy consumption of the equipment. details as follows:

(1) The combination of micro-vortex flocculation and contact flocculation significantly increases the processing load

A large number of micro-scale vortices are generated by setting micro-vortex generation grids at the water inlet of the equipment, which improves the mixing effect of the equipment and the probability of particle collision, greatly improves the flocculation efficiency, increases the floc size and density while reducing the dosage of chemicals; utilizes the contact flocculation and filtration mechanism of the suspended sludge layer to significantly increase the processing load of the equipment and create conditions for higher-precision filter cloth filtration.

(2) Combining advanced surface filtration technology to ensure that the effluent water quality meets the standard

The surface filter assembly with high packing density is arranged in the clear water area of the hydraulic clarification section. On the one hand, the organic combination of the clarification unit and the filter unit reduces the corresponding equipment components. At the same time, the high-density filter cloth filtration technology is used to further increase the processing load and processing accuracy of the equipment, and fundamentally realize the large water volume and high standard processing requirements.

(3) "Double high" and "Double province" process equipment

The three processes of mixing, flocculation and filtration are highly integrated to form an integrated equipment. The equipment is developed in space and occupies a small area, which saves a lot of land. The invention uses the water flow rate to provide energy for coagulation, replaces the motor stirring equipment, and simplifies the equipment structure. This equipment has no moving device, no need for mechanical maintenance, and achieves high-efficiency and reliable operation; the equipment uses active sludge contact flocculation, which can save the amount of coagulant agent; the equipment uses its own height difference to filter the siphon water, saving filtration energy consumption.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative work.

Fig. 1 is the three-dimensional sectional schematic diagram of the present invention;

Figure 2 is a three-dimensional schematic diagram of the appearance of the present invention;

Labels in the figure:

11-Tangential water inlet, 12 Grille fixing plate, 13 Disturbance grid, 14 Micro-vortex reaction barrel, 15-Sludge hopper in micro-vortex area, 16-Sludge discharge pipe in micro-vortex area, 17-Diversion cover, 18-Support rod of diversion cover, 19-Fixation rod of micro-vortex reaction tank, FN1-Sludge discharge pipe valve in micro-vortex area;

21-suspension clarification column, 23-sludge hopper in the suspension clarification area, 24 sludge discharge pipe (vent pipe) in the suspension clarification area, FN2-sludge discharge pipe valve in the suspension clarification area, FW1-outlet pipe valve in the clear water area;

31-groove filter cloth filter, 32-filter filter, 33-siphon center outlet pipe, 34-filter cloth washing water supply pipe, 35-suction filter cloth cleaning clip, 36-outlet pipe support rod, FW2-filter cloth filter outlet pipe valve, FX1-filter cloth cleaning valve;

P1-wastewater lifting pump, P2-filter cloth filter backwash pump, G1-sewage water supply pipe, J1-suspension clarification area effluent turbidity meter, J2-filter cloth filter effluent turbidimeter.

Detailed ways

The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

The invention provides an integrated wastewater treatment system for treating tunnel wastewater with high turbidity (high SS content), which is a hydraulic vortex micro-vortex flocculation combined with siphon surface filtration. As shown in Figure 1 and Figure 2. The system mainly includes a micro-vortex enhanced flocculation area, a suspension clarification and separation area, and a siphon surface filtration area.

The micro-vortex enhanced flocculation zone is provided with vortex-generating spoiler grids, which generate different degrees of turbulence in the flow field by means of fluid swirling through the spoiler grids, and then generate a large number of micro-vortexes (referring to vortexes with a scale between 1-500 μm) that promote particle collision and flocculation.

The suspension clarification and separation zone mainly uses suspended sludge to absorb and intercept tiny flocs in wastewater, and realizes further treatment of suspended solids in wastewater by means of contact flocculation;

The siphon surface filter area mainly relies on high-precision filter cloth to filter and intercept tiny particles that cannot be intercepted by the aforementioned process to ensure the water quality of the effluent, and further uses the height difference of the equipment to form a siphon pressure difference on the surface of the filter cloth to achieve unpowered filter water.

When the effluent requirements are high or the effluent from the suspension, clarification and separation area does not meet the discharge standard, the raw water entrained by the tiny flocs will move further to the siphon surface filtration area, and the filter cloth filter has the characteristics of high packing density and high filtration precision to achieve guaranteed filtration of wastewater treatment; at the same time, the siphon is formed on the surface of the filter cloth by using the height difference of the equipment, and the siphon effect is used to provide the pressure required for surface filtration to achieve unpowered water discharge.

The micro-vortex enhanced flocculation zone mainly includes a micro-vortex reaction tank 14, the bottom of the micro-vortex reaction tank 14 is a micro-vortex sludge hopper 15 with a closed cone structure, and several tangential water inlets 11 are arranged on the micro-vortex reaction tank 14 above the sludge hopper 15 in the micro-vortex zone. The tangential water inlet is set at 100-150 mm from the upper edge of the sludge hopper in the micro-vortex area, so as to reduce the disturbance of the rotating water flow to the sludge hopper 15 that has settled.

If the water flow at the water inlet directly hits the spoiler grid, the energy of the water flow will be dissipated sharply, and it will not be possible to form a swirl in the reactor, and then it will not be possible to form a micro-vortex at the side wall of the grid by swirl crossing; at the same time, the high-speed water flow will directly impact the spoiler grid for a long time, which will cause ineffective loss of the spoiler grid. Therefore, a grid fixing plate 12 and a spoiler grid 13 are arranged at 100-120 mm above the water inlet, and the spoiler grid 13 is fixed on the grid fixing plate 12 by socket or welding, and the grid fixing plate 12 is installed in the vortex reaction barrel 14.

An inverted cone-shaped diversion cover 17 is concentrically arranged on the upper part of the vortex reaction tank 14; the wastewater treated in the micro-vortex enhanced flocculation zone will move radially to the diversion cover, and under the drainage of the inverted diversion cover, the water flow will form a pond turning, causing most of the particles to be turned out of the micro-vortex enhanced flocculation zone under the action of water flow, so as to carry out flocculation and sedimentation in the suspension clarification zone. At the same time, the setting of the diversion cover forces the water flow to decelerate here, reducing the impact and disturbance on the suspended sludge layer, so that the equipment has a certain ability to resist impact loads.

The several tangential water inlets 11 are all connected to the sewage water supply pipe G1, and the sewage water supply pipe G1 is provided with a waste water lifting pump P1; one end of the micro-vortex area sludge discharge pipe 16 is connected to the micro-vortex area sludge hopper 15, and the other end is provided with a micro-vortex area sludge discharge pipe valve FN1.

The number of tangential water inlets 11 can be determined according to the diameter of the reaction barrel. When the diameter of the reaction barrel is within 600mm, at least two tangential water inlets can be arranged. When the diameter of the reaction barrel is 600mm-1200mm, no less than 4 water inlets should be arranged.

The spoiler grids 13 are arranged in a cross shape, a star shape or a rice-shaped arrangement; the number and spacing of the spoiler grids can be changed according to the amount of raw water treated; when the treated water volume is 5-12m ³ /d, the spoiler grid bars can be arranged in a cross shape, and the spacing between the spoiler grid bars can be controlled between 10-15mm; when the treated water volume is 12-24m ³ /d, the spoiler grid bars can be arranged in a star shape, and the spoiler grid bar spacing can be controlled at 8-10 mm; when the treated water volume is above 24m ³ /d, the spoiler grids can be arranged in the shape of a square, and the spacing of the spoiler grids can be controlled between 6-8mm.

The spoiler bars 13 are arranged in a cross shape, a star arrangement or a rice- ^shaped arrangement; the number and spacing of the spoiler bars can be changed according to the amount of raw water treated; When the water volume is 10m ³ /h or above, the spoiler grids can be arranged in the shape of a square, ^and the spacing between the spoiler grids can be controlled between 4-6mm.

The height of the spoiler bars 13 increases sequentially from the inside to the outer periphery in a ladder shape, and increases according to the height increase range of 1:1.2-1.5, and the height of the bars 13 does not exceed 2/3 of the total height of the reaction column.

Excessive height of the grid will cause the formed flocs to break when they collide with the grid, which will lead to deterioration of the effluent water quality. At the same time, according to the numerical simulation results, it can be seen that due to the dissipation effect of the grid on the water flow, after exceeding 2/3 of the reactor, the mainstream direction of the water flow is vertically upward, and there is no obvious swirling effect, so there is no need for the grid to continue to disturb the flow.

Since the spoiler grids are all arranged in a ladder shape, the number of grids that the formed flocs collide with during the upward rotation process is reduced, avoiding the breaking of the flocs, and at the same time, some loose micro-flocs will be broken and re-flocculated during the collision process, which increases the compactness of the micro-flocs.

The spoiler bars 13 are square or rhombus-shaped, with sharp corners facing the oncoming direction of the water flow, called the windward side, and facing away from the incoming water flow direction, called the leeward side. When adopting rhombic spoiler bar 13, its angle should be controlled between 6-45 °.

The inlet flow velocity in the tangential water inlet 11 is 1.5-3.5m/s, which can ensure sufficient reaction energy in the vortex flocculation process.

The main structure of the suspension clarification separation area is a suspension clarification column 21, and the micro-vortex reaction tank 14 is placed in it, and the two are coaxially arranged; the cavity between the upper end of the suspension clarification column 21 and the upper end of the micro-vortex reaction tank 14 is a clean water safety zone, preventing the siphon of the filter cloth filter from causing relatively strong disturbance to the suspension sludge layer. The clean water safety zone is provided with a clean water area outlet pipe 22, which is controlled by the clean water area outlet pipe valve FW1 and is provided with a suspended clarification area effluent turbidity meter J1, which monitors the effluent water quality in real time. When the suspended solids content in the effluent exceeds 20mg/L, or the required discharge standard cannot be met, the valve FW1 needs to be closed, and the waste water is further processed through the filter cloth filter; the lower part of the suspension clarification column 21 is a closed suspension clarification area sludge bucket 23, The sludge hopper 23 in the suspension clarification zone communicates with the sludge discharge pipe 24 in the suspension clarification zone, and the sludge discharge pipe 24 in the suspension clarification zone is provided with a valve FN2 for the sludge discharge pipe in the suspension clarification zone.

The main structure of the siphon type surface filter area is a trough filter cloth filter 31, the lower part of which is connected with the suspension clarification column 21 as a whole; a siphon type central outlet pipe 33 is installed in the trough type filter cloth filter 31 through an outlet pipe support rod 36, and a filter cloth filter outlet pipe valve FW2 and a filter cloth filter outlet turbidity meter J2 are successively installed at the outlet of the siphon type central outlet pipe 33; The two are connected through.

The filter cloth filter backwash pump P2 communicates with the suction filter cloth cleaning clip 35 through the filter cloth flushing water supply pipe 34. The suction filter cloth cleaning clip 35 is arranged on both sides of the filter filter box 32. When the filter is cleaned, the clip clamps the filter disc for cleaning.

The working principle of the present invention is as follows:

The vortex enhanced flocculation zone of the present invention is an inner cylinder structure with turbulent grid bars, and the water flow will strongly interact with the turbulent grid bars after entering the vortex enhanced flocculation area in a swirling manner. When the water flow passes through the spoiler grid, the main flow is decelerated by resistance on the windward side of the spoiler grid. The large-scale vortex in the mainstream will be cut by the edge of the windward side and the vortex will be broken. When the fluid microgroup further moves to the leeward side of the spoiler grid, the form of the flow channel will gradually expand, and the fluid will peel off the boundary layer under the action of viscosity and reverse pressure difference. As a result, a large number of micro-scale vortices suitable for the collision and flocculation of tiny particles, that is, Kolmogorov vortices, are generated.

The particles carried in the wastewater move in the same direction and collide under the action of the micro-vortex. At the same time, due to the small size of the vortex, the vortex is easy to generate centrifugal force in the radial direction, and the tiny particles migrate radially under the action of the centrifugal force, causing the particles inside the vortex to collide with the particles outside the vortex, thereby increasing the number of collisions. At the same time, the micro-vortex will shear the formed flocs, forcing the bound water between the flocs to be continuously compressed to form a denser floc.

At the same time, the water flow will fall in the axial direction due to gravity in the process of swirling upwards, so that back-mixing in the radial direction will occur. This back-mixing will facilitate the further diffusion of the drug, and at the same time promote the radial collision of the particles.

The flocs formed in the above process have the characteristics of high density and good settling performance, so it provides favorable conditions for the load increase of the equipment.

The water flow gradually loses its swirling ability during the process of rotating and rising. Under the action of pressure, the water flow begins to move upward along the radial direction of the reactor to the resulting conical diversion cover. Since the section of the suspended clarification column is larger than the area of the micro-vortex flocculation zone, the rising flow rate of the water flow is reduced from 6-10mm/s in the micro-vortex flocculation zone to 1-2.5mm/s, and the flocs gradually accumulate in the area above the diversion cover to form a suspended sludge layer with adsorption.

When the water flow with tiny flocs passes through the surface of the suspended sludge, the electrolyte concentration in the water is not enough to repel the two particles, and the tiny flocs will gradually adsorb on the active sludge surface of the suspended sludge layer to form larger flocs by contact flocculation. As the sludge in the suspension clarification zone continuously intercepts the tiny flocs, a clear mud-water separation interface will gradually form in the reactor, and the turbidity of the supernatant of the reactor effluent will gradually decrease to a stable value.

The escaping particles after treatment in the suspension clarification area move with the water flow to the siphon surface filtration protection area, using the advantage of the equipment's own height difference to cause a siphon, so that the filter cloth or filter membrane used for surface filtration has sufficient transmembrane pressure difference to achieve filtration treatment.

The floc particles are deposited on the surface of the filter to form a filter cake layer with certain permeability, and the tiny particles that escape out of the suspension clarification area will be intercepted by the filter cake first during the filtration process, thereby slowing down the pollution of the filter cloth. At the same time, because surface filtration has a higher packing density than deep bed filtration, the processing capacity of the filtration process will also be greatly improved.

Working process of the present invention:

Take the treatment of raw water with turbidity of 1000-1500NTU as an example:

After the raw water enters the reactor from the tangential water inlet 11, the water flow rotates in the vortex reaction barrel and moves upwards to the diamond-shaped spoiler grid 13. When the water flow passes through the windward side of the grid, the cross-section of the water flow decreases and the velocity increases locally, forming the first energy dissipation. The large-scale vortex entrained with tiny particles is broken for the first time here and dissipated into smaller-scale vortices. When the water flow further moves to the leeward side of the grid, due to the sudden expansion of the flow channel, a boundary layer along the surface of the grid occurs Stripping, this process will lead to further dissipation of mainstream energy and further reduction of vortex scale. During the process of swirling forward, its energy is continuously dissipated by the spoiler grid, and the large-scale energy-carrying vortex is also continuously dissipated into micro-vortices with a size similar to that of water particles.

Furthermore, the medicament entering the reactor together with the raw water is further fully dispersed under the violent disturbance of the spoiler grid.

Furthermore, as the particles in the water gradually aggregate and grow, the tiny particles gradually form denser microflocs with a certain size.

When the water flow reaches a certain height, the direction of the main flow will change from the initial swirling flow to the upward flow in the radial direction. Under the action of the conical diversion cover, the water flow is forced to enter the suspension clarification column in the way of "turning the pool". The larger floc particles in the water are deposited under the action of gravity, and the tiny floc particles continue to rise with the water flow.

Furthermore, since the rising velocity of the water flow in the suspension clarification zone is relatively slow, the tiny flocs are in a suspended state under the force of gravity and water flow, forming a suspended sludge layer. With the collision and accumulation of micro flocs, a suspended sludge layer with a large number of active adsorption sites is gradually formed. At the same time, the mud-water separation interface is gradually clear, and the turbidity of the supernatant is gradually reduced. Furthermore, the suspended sludge layer is continuously turned and circulated under the action of water flow and gravity, and then undergoes adsorption-like contact flocculation with the subsequent incoming micro-flocs, thereby realizing the capture of micro-flocs and tiny particles.

Further, there is a clean water safety zone of 0.5-0.7m between the suspended sludge layer and the filter cloth filter tank 31, and the clear water safety zone is provided with a clear water area outlet pipe 22. When the turbidity of the supernatant is lower than 10NTU or the content of suspended solids is lower than 20mg/L, the valve FW1 can be opened for discharge. If the above discharge requirements are not met, close the valve FW1 and the water flow will further move upwards into the filter cloth filter tank. When the water flow reaches the set level, open the valve FW2 to form a siphon pressure on the surface of the filter cloth by using the height difference of the equipment to siphon water out.

Claims (9)

1. A hydraulic vortex micro-vortex flocculation combined with siphon surface filtration integrated wastewater treatment system, characterized in that the system mainly includes a micro-vortex enhanced flocculation area, a suspension clarification separation area, and a siphon type surface filtration area through which the wastewater passes sequentially; the micro-vortex enhanced flocculation area mainly creates a large number of micro-vortices that promote particle collision and flocculation through the tangential nozzle incident water swirl flow through the spoiler grid; When the discharge standard is not met, the raw water entrained with tiny flocs will move further to the siphon surface filtration area, and the guaranteed filtration of wastewater treatment can be realized by using the filter cloth filter with high filling density and high filtration precision; at the same time, the higher height of the clarification equipment is used as the driving pressure of the filter cloth filter, that is, the siphon effect is used to provide the pressure required for surface filtration and realize unpowered water discharge. 2. A hydraulic vortex micro-vortex flocculation combined with siphon surface filtration integrated wastewater treatment system according to claim 1, characterized in that the micro-vortex enhanced flocculation zone mainly includes a micro-vortex reaction tank (14), the bottom of the micro-vortex reaction tank (14) is a closed cone-shaped micro-vortex sludge hopper (15), and the micro-vortex reaction tank (14) above the micro-vortex sludge bucket (15) is provided with several tangential water inlets (11), the tangential water inlets Set at 100-150mm from the upper edge of the sludge hopper in the micro-vortex area; the micro-vortex reaction tank (14) at 100-120 mm above the tangential water inlet (11) is provided with a spoiler grid (13) through the grid fixing plate (12); an inverted conical diversion cover (17) is concentrically arranged on the upper part of the micro-vortex reaction tank (14); several tangential water inlets (11) are connected to the sewage water supply pipe (G1) The waste water supply pipe (G1) is provided with a waste water lifting pump (P1); one end of the micro-vortex sludge discharge pipe (16) is connected to the micro-vortex sludge hopper (15), and the other end is provided with a micro-vortex sludge discharge pipe valve (FN1). 3. A hydraulic vortex micro-vortex flocculation combined with siphon surface filtration integrated wastewater treatment system according to claim 2, characterized in that the spoiler grids (13) are arranged in a cross shape, a star shape, or a square; the distance between the spoiler bars (13) is 10-15mm when the cross is arranged; the distance between the spoiler bars (13) is 8-10mm when the star is arranged, and the distance between the spoiler bars (13) is 6-8mm when the rice is arranged. 4. The integrated wastewater treatment system of hydraulic vortex micro-vortex flocculation combined with siphon surface filtration according to claim 3, characterized in that, the height of the spoiler bars (13) from the inside to the periphery increases sequentially in a ladder shape, and the height is increased according to the heightening range of 1:1.2-1.5. 5. A hydraulic vortex micro-vortex flocculation combined with siphon surface filtration integrated wastewater treatment system according to claim 4, characterized in that the spoiler grid (13) is a square or rhombus structure, and its sharp corners face the oncoming direction of water flow. 6. The integrated wastewater treatment system of hydraulic vortex micro-vortex flocculation combined with siphon surface filtration according to claim 2, characterized in that, the inlet flow velocity in the tangential water inlet (11) is 1.5-3.5m/s. 7. A hydraulic vortex micro-vortex flocculation combined with siphon surface filtration integrated wastewater treatment system according to claim 1, characterized in that the main structure of the suspension clarification separation area is a suspension clarification column (21), the micro-vortex reaction tank (14) is placed in it and the two are coaxially arranged; the cavity between the upper end of the suspension clarification column (21) and the upper end of the micro-vortex reaction tank (14) is a clean water safety zone; the clean water safety zone is provided with a clean water zone outlet pipe (22), and the water is discharged from the clean water zone The pipe valve (FW1) controls and is equipped with a suspension clarification area effluent turbidimeter (J1); the lower part of the suspension clarification column (21) is a closed suspension clarification area sludge hopper (23), the suspension clarification area sludge hopper (23) is connected to the suspension clarification area mud discharge pipe (24), and the suspension clarification area mud discharge pipe (24) is provided with a suspension clarification area mud discharge pipe valve (FN2). 8. A hydraulic vortex micro-vortex flocculation combined with siphon surface filtration integrated wastewater treatment system according to claim 1, characterized in that the main structure of the siphon surface filter area is a trough filter cloth filter (31), the lower part of which is connected to the suspension clarification column (21) as a whole; the trough filter cloth filter (31) is equipped with a siphon center outlet pipe (33) through the outlet pipe support rod (36), and the outlet of the siphon center outlet pipe (33) is sequentially installed. Cloth filter outlet pipe valve (FW2) and filter cloth filter outlet water turbidimeter (J2); several filter sheets (32) are installed on the siphon type center outlet pipe (33) and the two are connected through. 9. A hydraulic vortex micro-vortex flocculation combined with siphon surface filtration integrated wastewater treatment system according to claim 1, characterized in that the filter cloth filter backwash pump (P2) communicates with the suction filter cloth cleaning clip (35) through the filter cloth flushing water supply pipe (34), and the suction filter cloth cleaning clip (35) is arranged on both sides of the filter filter (32).