CN214360656U - Integrated treatment device for leaching sewage from heavy metal contaminated soil - Google Patents
Integrated treatment device for leaching sewage from heavy metal contaminated soil Download PDFInfo
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- CN214360656U CN214360656U CN202022799884.5U CN202022799884U CN214360656U CN 214360656 U CN214360656 U CN 214360656U CN 202022799884 U CN202022799884 U CN 202022799884U CN 214360656 U CN214360656 U CN 214360656U
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Abstract
The utility model discloses a processing apparatus integrates of heavy metal contaminated soil drip washing sewage, include: the system comprises a regulating tank, an oxidation-reduction tank, a coagulation-flocculation tank, an inclined plate sedimentation tank, a quartz sand filter tank, an activated carbon filter tank and a central control unit. In this way, the utility model relates to a processing apparatus integrates of heavy metal contaminated soil drip washing sewage realizes the purification of the prosthetic sewage that produces of drip washing through multi-stage treatment, carry out automatic allotment dosage through online real-time supervision probe, the precision is high, practice thrift the human cost, filter material sustainable use, can handle multiple type heavy metal pollutant and do not produce secondary pollution, it can reuse in drip washing repair equipment to go out water, practice thrift the drip washing medicament, improve drip washing repair efficiency, and has simple structure, equipment integration, reduce advantages such as repair cost.
Description
Technical Field
The utility model relates to a pollute place restoration technical field, especially relate to a processing apparatus integrates of heavy metal contaminated soil drip washing sewage.
Background
With the development of the soil leaching remediation technology, a large amount of leaching liquid is generated in the leaching process, the leaching liquid contains the leaching agent and pollutants transferred from the soil, especially heavy metal polluted soil leaching sewage, the heavy metal content is ultrahigh and various, if the heavy metal polluted soil leaching sewage is not properly treated, the direct discharge can cause harm to the environment, so how to treat the leaching sewage is realized, the purpose of reusing the leaching sewage to continuously leach the soil or directly discharging the soil is achieved, and the problem to be solved at present is urgent.
The existing sewage leaching treatment method has high treatment cost and low efficiency, can generate secondary pollution, has complex process and seriously influences the leaching efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a heavy metal contaminated soil drip washing sewage integrate processing apparatus.
In order to solve the technical problem, the utility model discloses a technical scheme be:
the utility model provides a heavy metal contaminated soil drip washing sewage integrate processing apparatus, includes: the system comprises an adjusting tank, an oxidation-reduction tank, a coagulation-flocculation tank, an inclined plate sedimentation tank, a quartz sand filter tank, an activated carbon filter tank and a central control unit, wherein real-time monitoring probes are arranged in the adjusting tank, the oxidation-reduction tank, the coagulation-flocculation tank, the inclined plate sedimentation tank and the quartz sand filter tank, override pipes are arranged in the adjusting tank, the oxidation-reduction tank, the coagulation-flocculation tank, the inclined plate sedimentation tank and the quartz sand filter tank, medicament preparation storage tanks are arranged on the adjusting tank, the oxidation-reduction tank and the coagulation-flocculation tank, the medicament preparation storage tanks are used for setting the amount of input medicaments according to the real-time data of water quality fed back by the real-time monitoring probes, the adjusting tank is provided with a sewage inlet, the sewage generated by leaching remediation enters the adjusting tank from the sewage inlet, the sewage generated by leaching-remediation enters the oxidation-reduction tank through a lifting pump after passing through the adjusting tank or enters the coagulation-flocculation tank through the override pipes, get into the sewage of redox pond gets into coagulation flocculation basin after the medicament is handled, the medicament includes oxidant and reductant, the inside electric stirring device that sets up of coagulation flocculation basin gets into the sewage of coagulation flocculation basin gets into the inclined plate sedimentation tank after hydraulic stirring, upper portion sets up the swash plate of slope in the inclined plate sedimentation tank, and the floc after the coagulation deposits through the swash plate, and the supernatant after the precipitation flows in through the overflow mouth quartz sand filter, the swash plate below sets up the mud pipe, and mud arranges to sludge treatment facilities, set up multistage filter material in the quartz sand filter, the supernatant is judged according to the quality of water data of the reflection of on-line real-time monitoring probe after the quartz sand filter material filters and is got into drip washing equipment, back flush pipeline or get into the active carbon filter jar, back flush pipeline's outlet through the quartz sand filter is intake, the washed suspended matters are discharged into the inclined plate sedimentation tank through the overflow port.
In a preferred embodiment of the present invention, the adjusting tank, the redox tank, the coagulation-flocculation tank, the inclined-plate sedimentation tank, the quartz sand filter and the activated carbon filter tank are arranged in the order of filtering the sewage.
In a preferred embodiment of the present invention, the storage tanks for storing different kinds of chemicals are prepared by the chemicals disposed on the adjusting tank, the redox tank and the coagulation-flocculation tank.
In a preferred embodiment of the present invention, after passing through the adjusting tank, the sewage is judged to enter the redox pool or enter the coagulation and flocculation tank through the overtaking pipe according to the water quality condition reflected by the online real-time monitoring probe inside the adjusting tank.
In a preferred embodiment of the present invention, the oxidizing agent comprises H2O2Or concentrated nitric acid, and the reducing agent comprises sodium pyrosulfite or ferrous sulfate.
In a preferred embodiment of the present invention, the electric stirring device comprises a stirring shaft and stirring blades disposed on the stirring shaft, the stirring shaft is disposed along a vertical direction, the plurality of stirring blades are equally spaced and uniformly distributed on the stirring shaft, and the plurality of stirring blades are parallel to each other.
In a preferred embodiment of the present invention, the stirring time of the electric stirring device is 1-30 minutes.
In a preferred embodiment of the present invention, the storage tank for the reagents of the coagulation and flocculation tank stores the coagulant and the flocculant, the coagulant comprises PAC, PFS, CaCl2, etc., and the storage tank is further connected with a heavy metal capturing agent feeding device.
In a preferred embodiment of the present invention, the bottom sludge precipitated by the inclined plate is discharged from the sludge discharge pipe to the sludge treatment device.
In a preferred embodiment of the present invention, two or three layers of filter materials are laid in the quartz sand filter, and back flushing is performed at regular time, and the back flushing water is sent to the front end regulating reservoir of the equipment, if the water outlet of the quartz sand filter reaches the reuse standard, the water outlet is reused in the leaching treatment system, if the water outlet does not reach the reuse standard, the water inlet enters the activated carbon filter tank for treatment, and is reused after reaching the standard, and finally the water outlet is stored for reuse or is discharged to the municipal pipe network.
The utility model has the advantages that: the utility model provides a processing apparatus integrates of heavy metal contaminated soil drip washing sewage, realize the purification of drip washing restoration production sewage through multi-stage treatment, carry out automatic allotment dosage according to quality of water through online real-time supervision probe, the precision is high, practice thrift the human cost, filter material sustainable use, can handle multiple type heavy metal pollutant and do not produce secondary pollution, it can be used for drip washing repair equipment again to go out water, practice thrift the eluent, improve drip washing repair efficiency, and has the advantages of simple structure, equipment integration, reduction repair cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
FIG. 1 is a schematic view of the overall structure of an integrated treatment apparatus for leaching sewage from heavy metal contaminated soil according to a preferred embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention includes:
an integrated treatment device for heavy metal contaminated soil leaching sewage, comprising: the sewage treatment system comprises an adjusting tank 3, an oxidation and reduction tank 4, a coagulation and flocculation tank 6, an inclined plate sedimentation tank 9, a quartz sand filter tank 11, an activated carbon filter tank 15 and a central control unit, wherein the adjusting tank 3, the oxidation and reduction tank 4, the coagulation and flocculation tank 6, the inclined plate sedimentation tank 9, the quartz sand filter tank 11 and the activated carbon filter tank 15 are sequentially arranged according to a sewage filtration treatment sequence.
The adjusting tank 3, the redox tank 4, the coagulation-flocculation tank 6, the inclined plate sedimentation tank 9 and the quartz sand filter tank 11 are all internally provided with a real-time monitoring probe 17, the real-time monitoring probe 17 is used for detecting real-time data of treated sewage, the adjusting tank 3, the redox tank 4, the coagulation-flocculation tank 6, the inclined plate sedimentation tank 9 and the quartz sand filter tank 11 are all communicated with an overrunning pipe 12, the adjusting tank 3, the redox tank 4, the coagulation-flocculation tank 6, the inclined plate sedimentation tank 9 and the quartz sand filter tank 11 are respectively provided with a switch valve at the inlet of the overrunning pipe 12, the adjusting tank 3, the redox tank 4 and the coagulation-flocculation tank 6 are all provided with a medicament preparation storage tank 2, the medicaments arranged on the adjusting tank 3, the redox tank 4 and the coagulation-flocculation tank 6 are stored with different types of medicaments, the medicament preparation storage tank 2 is used for setting the dosage of the medicaments according to the real-time data fed back by the real-time monitoring probe 17, the central control unit realizes automatic blending and adding of the medicament.
The adjusting tank 3 is provided with a leaching sewage water inlet 1, sewage generated by leaching restoration enters the adjusting tank 3 from the leaching sewage water inlet 1, if the pH value of the sewage is too high or too low, subsequent reaction is influenced, and a pipeline is easily corroded or sludge is easily deposited, so that the sewage needs to be pretreated in the adjusting tank 3, the pH value of the sewage is adjusted by adding a medicament in the medicament preparation storage tank 2, the medicament preparation storage tank 2 stores acid and alkali liquor medicaments, the pH value of the sewage in the adjusting tank 3 is detected by the online real-time monitoring probe 17 in the tank, the central control unit adjusts the medicament adding amount according to real-time data, automatic medicament allocation is realized, and the pH value of the sewage is controlled to be the optimum alkalescent environment for the subsequent treatment reaction.
After the pH value of sewage is adjusted, sewage enters the redox pool 4 through the lift pump 13 or enters the coagulation flocculation pool 6 through the overtaking pipe 12, the concentration of heavy metals in the sewage is judged according to the concentration, and the sewage enters the redox pool 4 or enters the coagulation flocculation pool 6 through the overtaking pipe 12 according to the water quality data reflected by the real-time monitoring probe 17 in the sewage after entering the regulating pool 3.
The oxidation-reduction pool 4 comprises an oxidation pool and a reduction pool, a medicament arranged on the oxidation pool is used for preparing an oxidant in the storage tank 2, a medicament arranged on the reduction pool is used for preparing a reducing agent in the storage tank 2, and if the sewage contains trivalent arsenic, H is added into the oxidation pool2O2With ferrous ions, oxidizing them into pentavalent arsenic for subsequent treatment; or reducing agents such as sodium metabisulfite or ferrous iron and the like are added into the reduction tank to reduce the hexavalent chromium with high toxicity into trivalent chromium, and different agents are selected according to the treatment requirements and the actual process to treat the sewage polluted by various complex heavy metals; when the heavy metal content in the sewage is less, the sewage can directly enter the next link through the surpassing pipe 12, so that the treatment effect is ensured, and meanwhile, the medicament and the energy consumption are saved.
Get into the sewage of redox pond 4 gets into coagulation flocculation basin 6 after the medicament is handled, coagulation flocculation basin 6 is inside to be set up electric stirring device 5, prepares coagulant and flocculating agent in bin 2 through throwing the medicament, makes the granule that is difficult to deposit in the sewage polymerize each other and form the colloid, and under electric stirring device 5 slowly stirs, the increase of mutual adsorption volume not only can reduce the perception index of quality of water such as turbidity, colourity of sewage, can get rid of multiple poisonous and harmful pollutant again.
The electric stirring device 5 comprises a stirring shaft and stirring blades arranged on the stirring shaft, the stirring shaft is arranged along the vertical direction, a plurality of stirring blades are uniformly distributed on the stirring shaft at equal intervals and are parallel to each other, after flocs are fully condensed, the flocs enter the inclined plate sedimentation tank 9, and the stirring time is 1-30 minutes.
The upper portion sets up the swash plate 7 of slope in the swash plate sedimentation tank 9, and is a plurality of the swash plate 7 is parallel to each other, and 6 play water in the flocculation basin of coagulating sedimentation is at the mutual motion and with mud separation sediment when the swash plate 7, the swash plate has increased the sedimentation area of sedimentation tank to shorten settling time, made the sediment more high-efficient.
The floc after the coagulation is precipitated through the swash plate 7, and the supernatant after the precipitation flows in through the overflow mouth quartz sand filter 11, the swash plate 7 below sets up sludge discharge pipe 8, and the floc that condenses in the sewage passes through the sediment that the swash plate 7 precipitates is discharged to sludge treatment equipment from sludge discharge pipe 8.
The quartz sand filter material 10 is arranged in the quartz sand filter tank 11, the quartz sand filter material 10 is used as a filter medium, the water discharged from the inclined plate sedimentation tank 9 is filtered by the quartz sand filter material 10, residual suspended matters, organic matters, colloidal particles, partial heavy metal ions and the like in the water are effectively retained, and the effects of reducing the water turbidity and purifying the water quality are achieved.
After being filtered by the quartz sand filter material 10, the supernatant is judged whether to reach the standard according to the water quality data reflected by the real-time monitoring probe 17, and after the water quality reaches the standard, the supernatant enters leaching equipment or a backwashing pipeline; if the standard is not met, the wastewater enters an activated carbon filter tank 15 for advanced treatment.
A tail water outlet 16 is arranged on the activated carbon filter tank 15, and an activated carbon filter plate 15 is arranged in the activated carbon filter tank 15.
The purified water in the quartz sand filter 11 is monitored by an online real-time monitoring probe 17, the purified water is discharged through an overrunning pipe 12 after reaching the standard, the purified water enters a municipal pipe network or is leached by recycled soil, the effluent which does not reach the standard further enters a downstream activated carbon filter tank 15 for deep treatment, the real-time monitoring probe 17 is connected with a central control unit, the effluent is controlled according to a detection result, and the quartz sand filter material can be recycled and sustainably utilized.
The backwashing pipeline is used for feeding water from a water outlet of the quartz sand filter 11, discharging suspended matters from an overflow port, discharging and collecting the suspended matters through the inclined plate sedimentation tank 9, and transporting the concentrated suspended matters to the outside.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a heavy metal contaminated soil drip washing sewage integrate processing apparatus which characterized in that includes: the system comprises an adjusting tank, an oxidation-reduction tank, a coagulation-flocculation tank, an inclined plate sedimentation tank, a quartz sand filter tank, an activated carbon filter tank and a central control unit, wherein real-time monitoring probes are arranged in the adjusting tank, the oxidation-reduction tank, the coagulation-flocculation tank, the inclined plate sedimentation tank and the quartz sand filter tank, override pipes are arranged in the adjusting tank, the oxidation-reduction tank, the coagulation-flocculation tank, the inclined plate sedimentation tank and the quartz sand filter tank, medicament preparation storage tanks are arranged on the adjusting tank, the oxidation-reduction tank and the coagulation-flocculation tank, the medicament preparation storage tanks are used for setting the amount of input medicaments according to the real-time data of water quality fed back by the real-time monitoring probes, the adjusting tank is provided with a sewage inlet, the sewage generated by leaching remediation enters the adjusting tank from the sewage inlet, the sewage generated by leaching-remediation enters the oxidation-reduction tank through a lifting pump after passing through the adjusting tank or enters the coagulation-flocculation tank through the override pipes, get into the sewage of redox pond gets into coagulation flocculation basin after the medicament is handled, the medicament includes oxidant and reductant, the inside electric stirring device that sets up of coagulation flocculation basin gets into the sewage of coagulation flocculation basin gets into the inclined plate sedimentation tank after hydraulic stirring, upper portion sets up the swash plate of slope in the inclined plate sedimentation tank, and the floc after the coagulation deposits through the swash plate, and the supernatant after the precipitation flows in through the overflow mouth quartz sand filter, the swash plate below sets up the mud pipe, and mud arranges to sludge treatment facilities, set up multistage filter material in the quartz sand filter, the supernatant is judged according to the quality of water data of the reflection of on-line real-time monitoring probe after the quartz sand filter material filters and is got into drip washing equipment, back flush pipeline or get into the active carbon filter jar, back flush pipeline's outlet through the quartz sand filter is intake, the washed suspended matters are discharged into the inclined plate sedimentation tank through the overflow port.
2. The integrated treatment device for the heavy metal contaminated soil leaching sewage according to claim 1, wherein the adjusting tank, the oxidation and reduction tank, the coagulation and flocculation tank, the inclined plate sedimentation tank, the quartz sand filter tank and the activated carbon filter tank are sequentially arranged according to the sewage filtering treatment sequence.
3. The integrated treatment device for the heavy metal contaminated soil leaching sewage according to claim 1, wherein different types of agents are stored in the agent preparation storage tank arranged on the adjusting tank, the oxidation-reduction tank and the coagulation-flocculation tank.
4. The integrated treatment device for the heavy metal contaminated soil leaching sewage according to claim 1, wherein the sewage is judged to enter the redox pool or enter the coagulation flocculation pool through the overtaking pipe according to the water quality condition reflected by an internal online real-time monitoring probe after passing through the regulating pool.
5. The integrated treatment device for the heavy metal contaminated soil leaching sewage according to claim 1, wherein the oxidant comprises H2O2Or concentrated nitric acid, and the reducing agent comprises sodium pyrosulfite or ferrous sulfate.
6. The integrated treatment device for the heavy metal contaminated soil leaching sewage according to claim 1, wherein the electric stirring device comprises a stirring shaft and stirring blades arranged on the stirring shaft, the stirring shaft is arranged in a vertical direction, the stirring blades are uniformly distributed on the stirring shaft at equal intervals, and the stirring blades are parallel to each other.
7. The integrated treatment device for the heavy metal contaminated soil leaching sewage according to claim 1, wherein the stirring time of the electric stirring device is 1-30 minutes.
8. The integrated treatment device for the heavy metal contaminated soil leaching sewage according to claim 1, wherein a storage tank for storing coagulant and flocculant is prepared from a medicament of the coagulation and flocculation tank, and a heavy metal capturing agent adding device is further connected.
9. The integrated treatment device for the heavy metal contaminated soil leaching sewage according to the claim 1, wherein the bottom sludge precipitated from the sewage through the inclined plate is discharged from the sludge discharge pipe to the sludge treatment device.
10. The integrated treatment device for the heavy metal contaminated soil leaching sewage according to claim 1, wherein two or three layers of filter materials are laid in the quartz sand filter, back flushing is performed at regular time, and the back flushing washing water is delivered to a front end regulating tank of equipment, if the water outlet of the quartz sand filter meets the reuse standard, the water outlet is recycled in a leaching treatment system, if the water outlet does not meet the reuse standard, the water inlet enters an activated carbon filter tank for treatment and is recycled after reaching the standard, and finally the water outlet is stored for reuse or is discharged to a municipal pipe network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022799884.5U CN214360656U (en) | 2020-11-27 | 2020-11-27 | Integrated treatment device for leaching sewage from heavy metal contaminated soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022799884.5U CN214360656U (en) | 2020-11-27 | 2020-11-27 | Integrated treatment device for leaching sewage from heavy metal contaminated soil |
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| Publication Number | Publication Date |
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| CN214360656U true CN214360656U (en) | 2021-10-08 |
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| CN202022799884.5U Active CN214360656U (en) | 2020-11-27 | 2020-11-27 | Integrated treatment device for leaching sewage from heavy metal contaminated soil |
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