JP6990347B1 - Elution wastewater treatment equipment after synergistic elution and restoration of organic chlorine-based pesticide-contaminated soil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elution wastewater treatment apparatus after synergistic elution / repair of organochlorine pesticide-contaminated soil, which has a rational structure, is easy to operate, has a high degree of automation, and contributes to the spread of wastewater treatment by elution. SOLUTION: The sludge removal tank and the purification tank arranged side by side are included, and at the same time, a sludge removal module for removing the removed sludge and solid waste is provided inside the sludge removal tank, and inside the purification tank, A purification module that purifies and filters with chemicals is installed, reaching the standard that can directly discharge treated wastewater, the structure of the device is rational, easy to operate, high degree of automation, and useful for popularization of wastewater treatment by elution. .. [Selection diagram] Fig. 3

Description

The present invention relates to a technical field for treating organochlorine pesticide-contaminated soil, and specifically relates to an elution wastewater treatment apparatus after synergistic elution / repair of organochlorine pesticide-contaminated soil.

Organic chlorine-based pesticides have a stable structure, are highly toxic, are difficult to decompose in soil, and have a long natural decomposition time of several years to several decades, compared to general chemical industry contaminated areas. These are long-lasting, high risk of contamination, high human health and ecological risks, and currently have strict and difficult requirements for remediation techniques and processes for organic chlorine-based pesticide contaminated areas. The polluted soil at the site has become a "chemical timed bomb", a serious threat to human health and environmental safety, and a soil environment problem that needs to be resolved urgently. Synergistic chemical elution methods have significant technical and economic advantages in that they can quickly repair soil in areas contaminated with high concentrations and highly toxic organochlorines. However, the problem of treating and discharging elution wastewater after elution and repair has become a new urgent issue.

Preliminary estimates show that the soil restoration and wastewater treatment market will reach tens of trillion yuan over the next few years.
Accelerating the research and development of restoration technology and equipment is very urgent to meet the needs of the wastewater treatment market and improve the technical level of soil restoration and wastewater treatment, Chinese patent CN20.
4529540U discloses a methane chloride organochlorine wastewater treatment system including a sewage reactor, the supply end of which is injected with sulfuric acid, hydrogen peroxide, and wastewater for motor agitation.
After that, the reaction is completed, introduced into the reaction wastewater pool and passed through, and the tilted plate settler,
Perform a secondary treatment on the wastewater to prevent it from causing secondary pollution. The hydrogen peroxide contact oxidative aggregation method is used to treat methane chloride organic chlorine waste water, which not only discharges the organic chlorine waste water to the standard, but also does not cause secondary pollution after the use of hydrogen peroxide. However, the treatment effect is relatively stable and single, and the treatment effect is not high for the elution wastewater that contains a large amount of impurities and is difficult to decompose.

Therefore, it is necessary to provide a device that effectively treats the elution wastewater after synergistic elution and repair of the soil contaminated with organochlorine pesticides, prevents the secondary contamination of the elution wastewater, and causes harmful sludge and organic matter in the elution wastewater. Residues of chlorine-based pesticides can be properly treated, the standard of direct discharge can be met, and environmental pollution is avoided.

In order to solve the above technical problems, the present invention provides an elution wastewater treatment apparatus after synergistic elution / repair of organochlorine pesticide-contaminated soil.

The technical solution of the present invention is as follows. Elution wastewater treatment equipment after synergistic elution and restoration of organochlorine pesticide-contaminated soil is equipped with a sludge removal tank and a purification tank that are communicated with each other via a connecting pipe and arranged side by side.
A first partition plate is horizontally provided in the middle of the sludge removal tank, a water passage area is provided in the sludge removal tank below the first partition plate, and a sludge removal module is further provided inside the sludge removal tank. Provided, it is
It is composed of a first rotation shaft located at the bottom of a water passage region below the first partition plate, and a second rotation shaft and a third rotation shaft located on both sides above the first partition plate, respectively. , A set of rotating shafts to support the toothed rake grid,
Between a toothed rake grid for collecting sludge and waste and rotatably fitted outside the first, second, and third axis of rotation. The toothed rake grid located at is clamped by rolling brushes arranged vertically on both sides of the toothed rake grid, from the state where the toothed rake grid is arranged horizontally to the first partition plate to the first partition plate. Can be changed to be placed vertically,
A linear collection tank is provided on the first partition plate below the toothed rake grid located on the second rotation axis and slidably connected to the upper surface of the first partition plate to collect scraped material. For ring recovery tanks, including,
A second partition plate is horizontally provided in the middle of the purification tank, and a purification module is further provided inside the purification tank.
One end is connected to the connection pipe, and the other end communicates with the purification groove below the second partition plate in the middle part of the purification tank. ,
The filtration mechanism includes a filtration mechanism for purifying waste water, the filtration mechanism is fixedly fitted in the middle of the liquid transport pipe, the liquid transport pipe penetrates vertically, and the filtration mechanism is fixedly connected to the liquid transport pipe. Includes an inner turntable located inside the outer shell and rotatably connected to the outer shell, with through holes at each connection point of the outer shell with each stage fluid transport pipe, said inner. Multiple sets of filtration holes with the same diameter as the through holes are provided on the turntable at equal intervals in the circumferential direction, and each set of filtration holes is vertically aligned with the through holes located on the same side through the rotation of the inner turntable. A removable filtration net is provided within each set of filtration holes, and the inner turntable is connected to the turntable block located on the inner upper surface of the purification tank via two sets of connecting rods. The table block is driven to rotate by a rotary motor located inside the table block.

Further, first teeth are provided on the outside of the outer ring wall and the inside of the inner ring wall of the annular recovery tank, respectively, and the first tooth is located at a position corresponding to the inside of the inner ring wall of the annular recovery tank of the first rotating rod. 1
A second tooth that meshes with the tooth is provided, and an annular ring slidably connected to an annular groove provided on the upper surface of the first partition plate is provided on the outer bottom surface of the annular recovery tank. 1st tooth and 2nd
The ring-shaped recovery tank is rotated by the meshing of the teeth, and the ring-shaped ring and the ring-shaped groove are installed to prevent the ring-shaped recovery tank from shifting during rotation.

Further, in the filtration hole set, the inner filtration hole near the inside of the inner turntable and the outer filtration hole near the outside of the inner turntable are divided, and between the inner filtration hole and the outer filtration hole, to the outside of the inner turntable. An extending chute is provided, the inner filtration hole and the filtration net provided on the outer filtration hole are connected by a set of fixing rods, and a threaded groove is provided at the rear end of the filtration net of the outer filtration hole to provide an inner side. The front end of the filtration net of the filtration hole is provided with a block engaged with the inner turntable, and one side of the outer wall of the outer shell is provided with a set of openings for exchanging the filtration net with the inner turntable. .. With the above installation, the compressed wastewater can be further recovered to avoid contamination, and at the same time, the filtration hole set can be replaced more conveniently by the above installation.

Further, a first stirring paddle located in the water passage region is connected to the lower part of the rolling brush via a first rotating rod penetrating the first partition plate, and a second stirring paddle is connected to the center of the lower part of the outer shell. A second stirring paddle located in the lower purification groove of the second partition plate is connected via a second rotating rod penetrating the partition plate of.

In addition, water inlets and water outlets are provided on the side walls on both sides of the sludge removal tank at positions corresponding to the water passage area, realizing continuous and uninterrupted wastewater treatment work and corresponding to the lower part of the second partition plate. A chemical inlet is provided on the outer wall of the purification tank at the position where the wastewater is charged, and the wastewater can be treated more thoroughly by the second stirring paddle in addition to the chemical charge. Is tilted and the lower end is the end to collect waste, so sludge and waste collected by the toothed rake grid can fall in and be discharged, and a water pump on the connecting pipe. Is provided, and a rotation groove for rotating the connecting rod is provided on the upper surface of the outer shell so that the rotation of the connecting rod is not hindered.

Further, a compression mechanism for compressing the mud cake is connected above the annular recovery tank and the linear recovery tank, and the compression mechanism includes a return chute provided on a side away from the sludge removal module, and the return chute includes a return chute. A pair of blade wheels for scraping waste are correspondingly provided in the annular recovery tank and at positions corresponding to the ends of the straight recovery tank, respectively.
Four sets of blades are provided on the blade wheel at equal intervals, and slots for rotating the blades are provided on the inner bottom portion and the side wall of the return chute, respectively.
A push rod motor is provided on the outer wall of the rear end of the return chute, the output end of the push rod motor is connected to the push plate via a telescopic rod penetrating the outer wall of the return chute, and the push plate is connected to the return chute. Slidably connected, a top plate is provided on the top of the push plate, a spring groove is provided on the bottom of the top plate, a slidable protrusion is provided on the top of the push plate in the spring groove, and the protrusion is Connected to a spring provided at one end of the spring groove,
A movable baffle is provided at the front end of the return chute, and the movable baffle is driven so as to slide by a drive motor located on the upper surface of the first partition plate, and the two sets of blade wheels are driven by a drive motor located on the upper surface of the first partition plate. Driven to rotate synchronously by a blade wheel motor located between the two sets of blade wheels in A waste water chute is provided on the upper surface of the partition plate.

The design of the compression mechanism can compress sludge and waste, save space while draining excess water, promote recycling, and compress and recover sludge and waste of various sizes.

The beneficial effects of the present invention are as follows.
(1) The elution wastewater treatment apparatus of the present invention can effectively treat the elution wastewater after synergistic elution repair of organic chlorine-based pesticide-contaminated soil, remove sludge and solid waste, and purify and filter with chemicals. By combining the above, the treated wastewater reaches the standard of direct discharge, the structure of the equipment is rational, it is easy to operate, the degree of automation is high, and it contributes to further general and common.
(2) The elution wastewater treatment apparatus of the present invention can effectively collect sludge and solid waste, compress it into a mud cake by a compression mechanism, save storage space, and discharge excess water, and collect it. Contribute more.
(3) The elution wastewater treatment apparatus of the present invention filters the wastewater after removing impurities by the provided filtration mechanism, and filters the wastewater multiple times by a plurality of sets of filtration holes to further improve the filtration effect and filter. The filtration holes can be replaced at any time to avoid diminishing the filtration effect due to clogging of the holes.

It is a schematic diagram of the whole structure of the sludge removal tank and the purification tank of this invention. It is a schematic diagram of the internal structure of the sludge removal tank of this invention. It is a schematic diagram of the sludge removal module structure of this invention. It is a schematic diagram of the transition structure from the horizontal state to the vertical state of the toothed rake grid of the present invention. It is a schematic diagram of the structure of the compression mechanism of this invention. It is a schematic diagram of the structure of the push plate and the top plate of the compression mechanism of this invention. It is a schematic diagram of the internal structure of the septic tank of this invention. It is a schematic diagram of the purification module structure of this invention. It is a schematic diagram of the internal structure of the purification module of this invention.

[Explanation of code]
1 Dirt removal tank 11 1st partition plate 111 Circular groove 12 Rotary shaft assembly 121 1st rotary shaft 122 2nd rotary shaft 123 3rd rotary shaft 13 Toothed rake grid 14 Water passage area 15 Rolling brush 16 Circular recovery Tank 161 1st tooth 162 Circular ring 17 Linear recovery tank 18 1st rotary rod 181 2nd tooth 19 1st stirring paddle 2 Purification tank 21 Liquid transport pipe 22 2nd partition plate 23 Purification groove 24 Turntable block 25 Chemical inlet 26 Second rotary rod 27 Second stirring paddle 3 Compression mechanism 31 Blade wheel 311 Blade 32 Return chute 321 Slot 33 Push rod motor 34 Telescopic rod 35 Push plate 351 Protrusion 36 Top plate 361 Spring groove 362 Spring 37 Movable Baffle 38 Filter hole 39 Waste water chute 4 Filter mechanism 41 Outer shell 411 Opening 412 Rotating groove 42 Inner turntable 421 Chute 43 Through hole 44 Filter hole set 441 Inner filter hole 442 Outer filter hole 45 Filter net 451 Thread groove 452 Block 46 Connection rod 47 Fixed rod 5 Connection pipe

The following, with reference to the accompanying drawings in the examples of the present invention, clearly and completely describes the technical solutions in the examples of the present invention, the terms "before and after", "before and after" used in the examples of the present invention. "Left and right" is used only to explain the purpose and cannot be understood to indicate or imply relative importance or implicitly indicate the location of the technical features indicated.

Example 1
As shown in FIG. 1, the elution wastewater treatment device after synergistic elution / restoration of organochlorine pesticide-contaminated soil is
A sludge removal tank 1 and a purification tank 2 communicated with each other via a connecting pipe 5 and arranged side by side are provided, a water pump is provided on the connecting pipe 5, and the water pump is a SYL type single-stage single suction vertical centrifuge. Use a pump,
1, sludge removal tank 1
As shown in FIG. 2, a first partition plate 11 is horizontally provided in the middle of the sludge removal tank 1, and a water passage region 14 is provided in the sludge removal tank 1 below the first partition plate 11. Water inlets and water outlets are provided on the side walls on both sides of the sludge removal tank 1 at positions corresponding to the water passage region 14, respectively, to realize continuous and uninterrupted wastewater treatment work and to remove sludge inside the sludge removal tank 1. Further modules are provided, which are
As shown in FIGS. A rotating shaft set 12 for supporting the toothed rake grid 13, which is composed of a rotating shaft 122 and a third rotating shaft 123.
As shown in FIGS. 2, 3 and 4, a toothed rake grid 1 for collecting sludge and waste.
3 and rotatably fitted on the outside of the 1st, 2nd and 3rd rotating shafts 121, 122, 123 and toothed located between the 2nd, 3rd rotating shafts 122, 123. The rake grid 13 is clamped by rolling brushes 15 arranged vertically on both sides thereof, and the toothed rake grid 13 is arranged horizontally with respect to the first partition plate 11 to the first partition plate 11.
The toothed rake grid 13 can be changed to be placed perpendicular to the GSH on the market.
The external structure of the P140 cm toothed rake grid has been adjusted, and the direction of both sides of the rake grid has been adjusted so that the transition from the horizontal state to the vertical state is suitable for the above device, and the lower part of the rolling brush 15 is the first partition. It is connected to a first stirring paddle 19 located in the water passage region 14 via a first rotating rod 18 penetrating the plate 11.
As shown in FIGS. The first tooth 161 is provided on the outer side and the inner side of the inner ring wall, respectively, and the second tooth 181 meshes with the first tooth 161 at a position corresponding to the inner side of the inner ring wall of the annular recovery tank 16 of the first rotating rod 18. An annular groove 1 provided on the upper surface of the first partition plate 11 on the outer bottom surface of the annular recovery tank 16
An annular ring 162 slidably connected to 11 is provided, and the first tooth 161 and the second tooth 181 are provided.
The annular recovery tank 162 is rotated by the engagement of the ring, and the annular ring 162 and the annular groove 111 are installed to prevent the annular recovery tank 162 from shifting during rotation.
As shown in FIG. 3, a linear recovery tank 17 is provided on the first partition plate 11 below the toothed rake grid 13 located on the second rotating shaft 122, and the linear recovery tank 17 is tilted at 15 °. Sludge and waste collected by the toothed rake grid 13 are dropped and discharged because the straight collection tank 17 is arranged in an inclined manner and the lower end is the end for collecting waste. Can be done,
2, purification tank 2
As shown in FIG. 7, a second partition plate 22 is horizontally provided in the middle of the purification tank 2, and a purification module is further provided inside the purification tank 2, which includes:
1-liquid transport pipe 21
As shown in FIGS. 7 and 8, it is an S-shaped liquid transport pipe 21 that transports wastewater and has a plurality of stages in vertical cross section, and a chemical is charged onto the outer wall of the purification tank 2 at a position corresponding to the lower part of the second partition plate 22. A second port 25 is provided and is located in a purification groove 23 below the second partition plate 22 via a second rotating rod 26 that penetrates the second partition plate 22 in the center of the lower part of the outer shell 41. Stirring paddle 2
It is connected to 7, and the wastewater is treated more thoroughly by the second stirring paddle 27 together with the chemical injection, one end of the liquid transport pipe 21 is connected to the connection pipe 5, and the other end is in the middle part of the purification tank 2. Communicate with the purification groove 23 below the second partition plate 22
2 Filtration mechanism 4
As shown in FIGS. 8 and 9, it is a filtration mechanism 4 for purifying waste water, which is fixedly fitted in the middle of the liquid transport pipe 21 and vertically penetrates the liquid transport pipe 21, and the filter mechanism 4 is a liquid. It includes an outer shell 41 fixedly connected to the transport pipe 21 and an inner turntable 42 located inside the outer shell 41 and rotatably connected to the outer shell 41 with each stage liquid transport pipe 21 of the outer shell 41. Through holes 43 are provided at each of the connection points, and a plurality of sets of filtration hole sets 44 having the same diameter as the through holes 43 are provided at equal intervals in the circumferential direction on the inner turntable 42, and each set of filtration hole sets 44 is provided. It can correspond to the through hole 43 located on the same side in the vertical direction through the rotation of the inner turntable 42.
A removable filtration net 45 is provided in each set of filtration hole sets 44, and the external structure of a commercially available high-quality stainless steel filter screen is adjusted according to the size of the through hole to form the filtration net 45 in the above device. Suitable, the inner turntable 42 is connected to the turntable block 24 located on the inner upper surface of the purification tank 2 via two sets of connecting rods 46, and the turntable block 24 is rotated by a rotary motor located inside the turntable block 24. The rotary motor is a commercially available industrial gear reduction motor, and a rotary groove 412 for rotating the connection rod 46 is provided on the upper surface of the outer shell 41 to hinder the rotation of the connection rod 46. There is no.
The working principle of wastewater treatment using the elution wastewater treatment device after synergistic elution / repair of the above-mentioned organochlorine pesticide-contaminated soil is as follows.
Eluted wastewater after elution and repair of contaminated soil containing DDT is injected into the sludge removal tank 1 from the water inlet, and the sludge and solid waste are removed by the sludge removal module.
The working principle of the sludge removal module is as follows:
After the waste water is subjected to the secondary sludge removal treatment by the toothed rake grid 13 between the first rotating shaft 121 and the third rotating shaft 123, the first rotating shaft 121 and the second rotating shaft 122, the sludge and the sludge Most of the solid waste is pressed and discharged as it passes through the second axis of rotation 122 and falls into the linear recovery tank 17, with a small portion of the adhering sludge and solid waste on the toothed rake grid 13. Together, it moves forward to reach the position of the rolling brush 15, and the frictional force and relative movement between the toothed rake grid 13 and the rolling brush 15 scrapes a small portion of sludge and solid waste adhering to the toothed rake grid 13. Taken and ring collection tank 1
At the same time, the first rotating rod 18 is also rotated by the rotation of the rolling brush 15, the first stirring paddle 19 is rotated, the waste water in the water passage groove is stirred, and the toothed rake grid 13 is used. Complete contact was made to improve removal efficiency, and the annular recovery tank 16 was rotated by the engagement of the second tooth 181 on the first rotary rod 18 and the first tooth 161 on the annular recovery tank 16.
After that, the wastewater from which the sludge has been removed is pressurized from the water outlet of the sludge removal tank 1 via a water pump, then pumped up via the connecting pipe 5 and transferred into the purification tank 2.
The working principle of the purification module is as follows:
After the wastewater enters the liquid transport pipe 21, it is filtered by the filtration mechanism 4, and the filtered wastewater is discharged into the purification groove 2.
The motor that is discharged into 3 and then controls the rotation of the second rotating rod 26 is turned on.
The second stirring paddle 27 is rotated to stir, and commercially available polyacrylamide is added as a purifying agent from the drug charging port 25 to purify for 24 hours.
Among them, the working principle of the filtration mechanism 4 is as follows: when waste water enters the filtration hole set 44 in the through hole 43 via the liquid transport pipe 21, after being filtered by the filtration net 45, the other Inside by turning on the rotary motor to rotate the turntable block 24 and at the same time rotate the connecting rod 46 into the rotary groove 412 as it is sequentially filtered by the three-stage liquid transport pipe 21 to perform further filtration work. The turntable 42 rotates inside the outer shell 41, switching between different filter hole sets 44, moving the next set of filter hole sets 44 to the position corresponding to the through hole 43, and filtering the same set of filter hole sets 44. Prevents clogging due to too long time and rotates every 3 minutes.

Example 2
This embodiment is basically the same as that of the first embodiment except for the following. As shown in FIG. 9, the filtration hole set 44 has an inner filtration hole 441 and an inner turntable 42 near the inside of the inner turntable 42. Divided into outer filtration holes 442 near the outside, inner filtration holes 441 and outer filtration holes 442
A chute 421 extending to the outside of the inner turntable 42 is provided between the two, and a filtration net 45 provided on the inner filtration hole 441 and the outer filtration hole 442 is connected by a set of fixing rods 47 to the outer filtration hole 442. A protruding thread groove 451 is provided at the rear end of the filtration net 45, a block 452 engaged with the inner turntable 42 is provided at the front end of the filtration net 45 of the inner filtration hole 441, and one side of the outer wall of the outer shell 41 is provided. , A set of openings 411 for exchanging the communication filtration net 45 with the inner turntable 42 is provided. The wastewater compressed by the above installation can be further recovered to avoid pollution, and at the same time, the filtration hole assembly 44 can be replaced more conveniently by the above installation.
The replacement method of the filtration mechanism 4 is as follows:
When the filtration screen 45 on the filtration hole set 44 needs to be replaced, a dedicated sampler is used to enter from the opening 411 to the thread groove 451 and the dedicated sampler is a long round bar with a screw at the end. After rotation, the two sets of filtration nets 45 connected to the fixing rods 47 in the filtering hole set 44 may be taken out and replaced together with the threaded groove 451. Similarly, in the case of the new filtration net 45, the fixing rod 47 is similarly used by the sampler. Two sets of filtration nets 45 connected by are put into the filtration hole set 44 through the opening 411, and the block 452 and the inner turntable 42 are engaged and fixed.
Rotate the sampler in the opposite direction to separate it from the thread groove 451 and take it out.

Example 3
This embodiment is basically the same as that of the first embodiment except for the following, and as shown in FIG. 3, a compression mechanism for compressing the mud cake above the annular recovery tank 16 and the linear recovery tank 17. 3 is connected,
As shown in FIGS. 5 and 6, the compression mechanism 3 includes a return chute 32 provided on a side away from the sludge removal module, and the return chute 32 corresponds to the inside of the annular recovery tank 16 and the end of the linear recovery tank 17, respectively. A set of blade wheels 31 for scraping waste is correspondingly provided at such positions, and four sets of blades 311 are provided on the blade wheels 31 at equal intervals, and the inner bottom and side walls of the return chute 32 are provided. Blade 31 respectively
A slot 321 for rotating 1 is provided, a push rod motor 33 is provided on the outer wall of the rear end of the return chute 32, and the output end of the push rod motor 33 is a telescopic rod 34 penetrating the outer wall of the return chute 32. It is connected to the push plate 35 via the push plate 35, and the push plate 35 is slidably connected to the return chute 32. A slidable protrusion 351 is provided in the spring groove 361 at the upper portion of the 35, the protrusion 351 is connected to a spring 362 provided at one end in the spring groove 361, and a movable baffle 37 is provided at the front end of the return chute 32. The movable baffle 37 is driven so as to slide by a drive motor located on the upper surface of the first partition plate 11, the blade wheel motor is a commercially available double-headed DC motor, and the two sets of blade wheels 31 are the first. Driven to rotate synchronously by a blade wheel motor located between the two sets of blade wheels 31 on the upper surface of the partition plate 11, a plurality of filtration holes 38 are provided at the bottom near the movable baffle 37 at the front end of the return chute 32 to filter. A waste water chute 39 is provided on the upper surface of the first partition plate 11 below the hole 38.
The design of the compression mechanism 3 can compress sludge and waste, save space while draining excess water, promote recycling, and compress and recover sludge and waste of various sizes.

The working principle of the compression mechanism 3 is as follows:
The linear recovery tank 17 transports the collected sludge and solid waste to the bottom blade wheel 31 under the action of gravity, and the annular recovery tank 16 transports the collected sludge and solid waste to the blade wheel 31 during rotation. The blade wheel motor is turned on to drive the two sets of blade wheels 31 to rotate synchronously, transporting sludge and solid waste into the return chute, and the blades and return chute bottom and sides on both sides of the sludge and solid waste. The push rod motor 33 is turned on to control the telescopic rod 34 to move along the return chute 32, and the push plate 35 disposes of sludge and solids accumulated in the two slots 321. Pushing the object to the movable baffle 37 at the end of the return chute 32 to press the sludge and solid waste, while the protrusion 351 presses the spring 362 and pushes the protrusion 351 until the sludge and solid waste are squeezed into the mudcake. It is moved into the spring groove 361, and the water in it is discharged to the waste water chute 39 through the filtration hole 38, the drive motor is turned on, the movable baffle 37 is pushed outward, and then the telescopic rod 34.
The push plate 35 is pushed to the end of the return chute 32, and the squeezed mud cake is discharged and collectively collected.

Example 4
This embodiment is basically the same as that of the first embodiment except for the following, and the number of sets of the filtration hole sets 44 is different. Specifically, 12 sets of filtration holes are set on the inner turntable 2. 44 is 3 in the circumferential direction
It will be opened at 0 °.

Example 5
This embodiment is basically the same as that of the first embodiment except for the following, and the number of sets of the filtration hole sets 44 is different. Specifically, four sets of filtration holes are set on the inner turntable 2. 44 is 90 in the circumferential direction
It will be opened at °.

Example 6
This example is basically the same as Example 1 except for the following, and the components of the contaminants eluted from the contaminated soil are different. Specifically, the contaminated soil containing HCH is eluted and repaired. The eluted wastewater is injected into the sludge removal tank 1 from the water inlet, the sludge and solid waste removal treatment is performed by the sludge removal module, and the wastewater after the sludge is removed is water from the water outlet of the sludge removal tank 1. It is pressurized via a pump and pumped into the purification tank 2 via a connecting pipe to perform a filtration purification process.

Application example of elution wastewater treatment equipment Experimental sample: Elution wastewater after elution / repair of DDT-contaminated soil in a factory in this city, HCH
Eluted wastewater after elution and repair of contaminated soil was used as an experimental sample.
Test Standards and Methods: Following the measurement of BHC and DDT in soil by gas chromatography GB / T 14550-2003, the following study experiments were performed.
Examination 1 Effect of installing different numbers of filtration holes on the effect of elution wastewater treatment Using the elution wastewater after elution and repair of DDT-contaminated soil as an experimental sample, 8 sets, 12 sets, and 4 sets, respectively, in Examples 1, 4 and 5, respectively. The filtration hole set 44 is provided and the test results are shown in Table 1.
Table 1 Test result table of harmful substance components in eluted wastewater

Conclusion: As can be seen from Table 1, the DDT content in the treated wastewater was significantly reduced in each example, and the elution wastewater treatment apparatus after synergistic elution / repair of the organochlorine pesticide-contaminated soil of the present invention was used. For example, the wastewater containing an organochlorine pesticide can be effectively treated, and the DDT content of the treated wastewater in Example 1 is the smallest, and the treated wastewater DDT in Example 5 is the most reduced. The reduction in the content is relatively small, because the number of installed filter holes 44 is small and the harmful substances in the wastewater cannot be effectively filtered. In Example 4, the treated wastewater in Example 1 is not effective. When the content is close to the medium DDT content and the number of filter hole sets 44 is large, the manufacturing cost inevitably increases, and when the number of filter hole sets 44 is too large, the frequency of failures during use increases. The set of filter hole sets 44 is the most rational.

Examination 2 Effect of Elution / Repair Wastewater Treatment of Different Contaminated Soil Examples 1 and 6 are tested using elution wastewater after elution / repair of DDT contaminated soil and elution wastewater after elution / repair of HCH contaminated soil, respectively. The results are shown in Table 2:
Table 2 Test result table of harmful substance components in different elution wastewater

Conclusion: As can be seen from Table 2 above, according to the elution wastewater treatment apparatus after synergistic elution / repair of the organochlorine pesticide-contaminated soil of the present invention, harmful substances in the elution wastewater of different contaminated soil can be removed and removed. The effect was in line with expectations.
At the same time, in Example 2, the replacement of the filtration net 45 of the filtration mechanism 4 is added to the first embodiment, and the filtration net 45 of the filtration mechanism 4 is replaced in a timely manner through actual processing and use, which makes the operation difficult. It is possible to reduce the time required for operation and maintenance.
In the third embodiment, a compression mechanism 3 for compressing the annular recovery tank 16 and the linear recovery tank 17 recovered material into a mud cake is added to the first embodiment, and sludge and solid waste are disposed of by installing the compression mechanism 3 through actual processing and use. Although it is possible to effectively improve the collection process of goods, the power consumption is constantly increased by adding a motor, and it may be selected according to the actual processing needs.

Claims (6)

It is equipped with a sludge removal tank (1) and a purification tank (2) that are communicated with each other via a connecting pipe (5) and arranged side by side.
A first partition plate (11) is horizontally provided in the middle of the sludge removal tank (1), and a water passage region (14) is provided in the sludge removal tank (1) below the first partition plate (11). Is provided, and a sludge removal module is further provided inside the sludge removal tank (1).
A first rotating shaft (121) located at the bottom of a water passage region (14) below the first partition plate (11), and a second located on both sides above the first partition plate (11), respectively. A rotary shaft set (12) for supporting the toothed rake grid (13), which is composed of a rotary shaft (122) and a third rotary shaft (123).
A toothed rake grid (13) for collecting sludge and waste, and rotatably fitted outside the first, second, and third rotating shafts (121, 122, 123). The toothed rake grid (13) located between the second axis of rotation and the third axis of rotation (122, 123) is clamped and toothed by rolling brushes (15) arranged vertically on both sides thereof. The attached rake grid (13) is changed from the state where it is arranged horizontally with respect to the first partition plate (11) to the state where it is arranged vertically with respect to the first partition plate (11).
Slidingly connected to the top surface of the first divider (11) and straight on the first divider (11) below the toothed rake grid (13) located on the second axis of rotation (122). Collection tank (
17) is provided and includes an annular collection tank (16) for collecting scraped material.
A second partition plate (22) is horizontally provided in the middle of the purification tank (2), and a purification module is further provided inside the purification tank (2).
One end is connected to the connection pipe (5), and the other end communicates with the purification groove (23) below the second partition plate (22) to the middle part of the purification tank (2). An S-shaped liquid transport pipe (21) with multiple stages and
Including a filtration mechanism (4) for purifying wastewater,
The filtration mechanism (4) is fixedly fitted in the middle of the liquid transport pipe (21) and vertically penetrates the liquid transport pipe (21), and the filtration mechanism (4) is attached to the liquid transport pipe (21). Of the outer shell (41), including a fixedly connected outer shell (41) and an inner turntable (42) located inside the outer shell (41) and rotatably connected to the outer shell (41). Each stage liquid transport pipe (
Through holes (43) are provided at the connection points with the 21), and the inner turntable (4) is provided.
2) A plurality of sets of filtration holes (44) having the same diameter as the through holes (43) are provided at equal intervals in the circumferential direction, and each set of filtration holes (44) rotates the inner turntable (42). A removable filtration net (45) is provided in each set of filtration holes (44) corresponding to the through holes (43) located on the same side through the filter holes (43), and the inner turntable (42) is 2. Pair of connecting rods (46)
The turntable block (24) is connected to the turntable block (24) located on the inner upper surface of the purification tank (2), and the turntable block (24) is driven to be rotated by a rotary motor located inside the turntable block (24). Elution wastewater treatment equipment after synergistic elution / repair of organic chlorine-based pesticide-contaminated soil. First teeth (161) on the outside of the outer ring wall and the inside of the inner ring wall of the annular recovery tank (16), respectively.
) Is provided , and the second tooth (181) that meshes with the first tooth (161) is provided at a position corresponding to the inside of the inner ring wall of the annular recovery tank (16) of the first rotating rod (18). Is provided, and an annular groove (an annular groove) provided on the upper surface of the first partition plate (11) is provided on the outer bottom surface of the annular recovery tank (16).
The elution wastewater treatment apparatus after synergistic elution / repair of organochlorine pesticide-contaminated soil according to claim 1, wherein an annular ring (162) slidably connected to 111) is provided. The filtration hole set (44) is an inner filtration hole (441) near the inside of the inner turntable (42).
) And the outer filtration hole (442) near the outside of the inner turntable (42), extending to the outside of the inner turntable (42) between the inner filtration hole (441) and the outer filtration hole (442). A chute (421) is provided, with an inner filter hole (441) and an outer filter hole (441).
The filtration net (45) provided on the 442) is connected by a set of fixing rods (47), and a thread groove (451) protruding from the rear end of the filtration net (45) of the outer filtration hole (442) is provided. At the front end of the filtration net (45) of the inner filtration hole (441), the inner turntable (4)
A block (452) engaged with 2) is provided on one side of the outer wall of the outer shell (41).
A set of openings for exchanging the communication filter net (45) with the inner turntable (42) (
The elution wastewater treatment apparatus after synergistic elution / repair of the organic chlorine-based pesticide-contaminated soil according to claim 1, wherein 411) is provided. At the bottom of the rolling brush (15), a first stirring paddle (19) located in the water passage region (14) via a first rotating rod (18) penetrating the first partition plate (11). A lower purification groove (23) of the second partition plate (22) connected via a second rotating rod (26) that is connected and penetrates the second partition plate (22) at the center of the lower portion of the outer shell (41). The elution wastewater treatment apparatus after synergistic elution / repair of the organic chlorine-based pesticide-contaminated soil according to claim 1, wherein a second stirring paddle (27) located in) is connected. A water inlet and a water outlet are provided on the side walls on both sides of the sludge removal tank (1) at a position corresponding to the water passage region (14), respectively, and a purification tank (a purification tank) at a position corresponding to the lower part of the second partition plate (22). A drug inlet (25) is provided on the outer wall of 2), and the linear recovery tank (17) is provided.
Is diagonally arranged, a water pump is provided on the connecting pipe (5), and the outer shell (41) is provided.
The elution wastewater treatment apparatus after synergistic elution / repair of organic chlorine-based pesticide-contaminated soil according to claim 1, wherein a rotation groove (412) for rotating the connection rod (46) is provided on the upper surface of the above. .. A compression mechanism (3) for compressing the mud cake is connected above the annular recovery tank (16) and the linear recovery tank (17), and the compression mechanism (3) is provided on the side away from the sludge removal module. Including the return chute (32), the return chute (32) is a set of blades for scraping waste at positions corresponding to the inside of the annular recovery tank (16) and the end of the linear recovery tank (17), respectively. A wheel (31) is provided correspondingly,
Four sets of blades (311) are provided on the blade wheel (31) at equal intervals, and slots (321) for rotating the blades (311) are provided on the inner bottom portion and the side wall of the return chute (32), respectively. Provided,
A push rod motor (33) is provided on the outer wall of the rear end of the return chute (32), and the output end of the push rod motor (33) has a telescopic rod (34) penetrating the outer wall of the return chute (32). It is connected to the push plate (35) via the push plate (35).
Is slidably connected to the return chute (32) and has a top plate (36) on top of the push plate (35).
) Is provided, a spring groove (361) is provided at the bottom of the top plate (36), and the push plate (3) is provided.
A slidable protrusion (351) is provided in the spring groove (361) at the upper portion of the 5), and the protrusion (3) is provided.
51) is connected to a spring (362) provided at one end in the spring groove (361).
A movable baffle (37) is provided at the front end of the return chute (32), and the movable baffle (37) is driven so as to slide by a drive motor located on the upper surface of the first partition plate (11). The set of blade wheels (31) is driven to rotate synchronously by a blade wheel motor located between the two sets of blade wheels (31) on the upper surface of the first partition plate (11), and the return chute (32). A plurality of filtration holes (38) are provided at the bottom near the movable baffle (37) at the front end, and a waste water chute (39) is provided on the upper surface of the first partition plate (11) below the filtration holes (38). 1
Elution wastewater treatment equipment after synergistic elution / repair of organic chlorine-based pesticide-contaminated soil described in.

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