CN220520318U - Hardness treatment device for underground water seal cave depot crevice water - Google Patents

Abstract

The utility model relates to the technical field of water treatment, in particular to a hardness treatment device for underground water seal cave depot crevice water, which comprises a hardness removal unit, a coagulation unit, a flocculation unit and a precipitation unit which are sequentially connected along the water flow direction, wherein an energy dissipation unit is arranged at the water inlet end of the hardness removal unit, a water inlet pipe is arranged on the energy dissipation unit, and a pH adjusting unit is arranged at the water outlet end of the precipitation unit. The device surface load is high, and area is little, and anti load change ability is strong, can adapt to the undulant condition in a large scale of raw water quality, and the end of intaking is equipped with the energy dissipation unit, can stabilize the quality of intaking water, reduces because of the fluctuation of quality of water to the disturbance of agitator in the rear end reaction tank, can throw PAM and add ring and inclined tube and carry out the online washing of not stopping production, and treatment efficiency is high.

Description

Hardness treatment device for underground water seal cave depot crevice water

Technical Field

The utility model relates to the technical field of water treatment, in particular to a hardness treatment device for underground water seal cave depot crevice water.

Background

The underground water sealed cave depot is one technology of excavating cave in rock stratum below stable underground water level and storing crude oil, product oil, fuel oil and liquefied petroleum gas inside the cave. The water-sealed cave depot has the advantages of high safety performance, small occupied area, investment saving, less loss, low operation and management cost, long service life and the like, and has huge market demand potential. Sealing of the underground water seal cave depot is mainly achieved through infiltration of underground water into the cave. In addition, when the natural ground water level of the cave depot is reduced, the water curtain system is used for manually supplementing water, so that the water level of the water curtain system is ensured to be greater than the design operation minimum water level, and further the water sealing effect of the cave depot is ensured.

The underground water around the cavity is filled with the communicated cracks of the rock mass, the pressure of the crack water at any point on the cavity wall is larger than the pressure of the oil-gas cavity stored at the point in the operation process, so that the cavity keeps that only underground water flows into the cavity without the risk of diffusion of oil-gas in the cavity to the cracks of the cavity wall, then the crack water forms a layer of continuous water cushion layer at the bottom of the cavity by utilizing the principle that the water is heavier than the oil-gas, finally, the water is collected into a water collecting pit at the bottom of a cavity reservoir, and after the water quantity reaches a certain degree, the water is lifted by a crack water submerged conveying pump and is sent to a crack water recycling treatment device for treatment.

The crevice water is mainly permeated underground water, and at present, the hardness value content of the crevice water is high because the underground water is polluted to different degrees, especially the hardness content of the water body is high. According to the water quality data of the related projects, the total hardness in the underground water seal cave depot crevice water is up to 1000mg/L. Under the condition of high hardness, precipitation and hardening are easy to generate by the combined action of other pollutants, equipment is blocked, and the continuous operation of the fracture water recycling treatment device is influenced, so that the fracture water needs to be subjected to hardness removal before recycling treatment.

At present, when the hard wastewater is treated, a common coagulating sedimentation tank is often used, so that the surface load is small, the occupied area is large, and the treatment efficiency is low; the existing high-density sedimentation tank is not provided with an energy dissipation area, the water quality of the inlet water cannot be stabilized, the fluctuation of the water quality is easy to disturb a stirrer in the rear-end reaction tank, and the underground pipe section of the sludge discharge pipe is inconvenient to maintain.

In view of this, the present utility model has been made.

Disclosure of Invention

The utility model aims to provide a hardness treatment device for underground water seal cave depot crevice water, which has the advantages of high surface load, small occupied area, strong load change resistance, capability of adapting to the condition of large-range fluctuation of raw water quality, stable water quality of inflow water due to the arrangement of an energy dissipation unit at the water inlet end, capability of reducing disturbance of water quality fluctuation to a stirrer in a reaction tank at the rear end, capability of carrying out on-line cleaning on PAM feeding rings and inclined pipes without stopping production, and high treatment efficiency.

In order to achieve the above object of the present utility model, the following technical solutions are specifically adopted:

the utility model provides a hardness treatment device for underground water seal cave depot crevice water, which comprises a hardness removal unit, a coagulation unit, a flocculation unit and a precipitation unit which are sequentially connected along the water flow direction, wherein an energy dissipation unit is arranged at the water inlet end of the hardness removal unit, a water inlet pipe is arranged on the energy dissipation unit, and a pH adjusting unit is arranged at the water outlet end of the precipitation unit.

In the above technical scheme, further, remove hard unit includes removes hard pond, the coagulation unit includes the coagulation pond, the flocculation unit includes the flocculation pond, the precipitation unit includes the sedimentation tank, the energy dissipation unit includes the energy dissipation pond, the inlet tube is established on the energy dissipation pond, the pH adjusting unit includes the neutralization pond, the energy dissipation pond remove hard pond the coagulation pond with the flocculation pond between the water hole intercommunication of passing through in proper order, a plurality of along the rivers direction setting the water hole is arranged from top to bottom alternately.

In the above technical scheme, further, remove hard pond includes that first removes hard pond and second remove hard pond, the energy dissipation pond first remove hard pond the second remove hard pond with it is in proper order through between the coagulating basin water hole intercommunication, first remove hard pond with the second remove all be equipped with in the hard pond and remove hard agent dosing tube and agitator.

In the above technical scheme, further, the water inlet pipe and the water passing holes at the water outlet end of the energy dissipation tank are staggered in the vertical direction.

In the above technical scheme, further, the inlet tube with the water hole of energy dissipation pond water outlet end is in vertical direction homonymy distribution, be located in the energy dissipation pond the inlet tube with the position between the water hole is equipped with the baffle, the baffle is close to in the vertical direction the one end of inlet tube with the energy dissipation pond is connected, the baffle is kept away from in the vertical direction the one end of inlet tube with be equipped with the rivers passageway between the energy dissipation pond.

In the above technical scheme, further, a coagulant dosing pipe and a stirrer are arranged in the coagulation tank.

In the above technical scheme, further, be equipped with the draft tube in the flocculation vat, the lateral wall of draft tube through a plurality of guide plates with the inner wall fixed connection in flocculation vat, be equipped with the agitator that has the effect of promoting in the draft tube, the lower part is equipped with the throwing and adds the ring in the draft tube, throw and add the ring and be connected with flocculating agent dosing pipe and wash pipe respectively, be equipped with the valve on the wash pipe.

In the above technical scheme, further, a plug flow area is arranged between the flocculation tank and the sedimentation tank, a water passing hole at the water inlet end of the flocculation tank is positioned at the upper part of the flocculation tank, a water outlet of the flocculation tank is positioned at the lower part of the flocculation tank and is communicated with the plug flow area, and the upper part of the plug flow area is communicated with the sedimentation tank.

In the above technical scheme, further, the upper portion of sedimentation tank is equipped with the inclined tube, the bottom of sedimentation tank is equipped with the scraper, the bottom play mud mouth of sedimentation tank is connected with the mud pipe, the exit linkage of mud pipe has the mud pump, the exit linkage mud back flow of mud pump and the outer calandria of mud, the export of mud back flow with the bottom intercommunication of flocculation tank, the below of sedimentation tank is equipped with the trench, the underground pipe section of mud pipe is located in the trench, the top exit of trench is equipped with the apron.

In the above technical scheme, further, the position of the flushing pipe above the sedimentation tank is provided with an inclined pipe flushing reserved interface, and the inclined pipe flushing reserved interface is provided with a valve.

In the above technical scheme, further, an acid dosing pipe and a stirrer are arranged in the neutralization tank, and a water outlet pipe is arranged on the neutralization tank.

Compared with the prior art, the utility model has the beneficial effects that:

(1) According to the utility model, the energy dissipation unit is arranged at the water inlet end to buffer incoming water, stabilize the water quality of incoming water, reduce disturbance of the stirrer in the reaction tank at the rear end due to water quality fluctuation, and avoid short water flow in the energy dissipation tank and improve energy dissipation effect by reasonably controlling the relative positions of the water inlet pipe and the water outlet end water through holes of the energy dissipation tank or additionally arranging the baffle plate.

(2) The utility model is provided with the flushing pipe, can regularly carry out on-line flushing without stopping production on the feeding ring, avoids the blockage of the feeding ring, and is provided with the inclined pipe flushing reserved interface, so that the inclined pipe can be regularly washed on-line without stopping production, the pollution and blockage of the inclined pipe are avoided, and the treatment effect and the treatment efficiency are improved.

(3) The outside of the mud pipe is provided with a pipe ditch, so that an operation space is provided for overhauling the underground pipe section of the mud pipe, and the mud pipe is convenient to overhaul and maintain.

(4) The utility model has high surface load, small occupied area, strong load change resistance, adaptation to the condition of large-range fluctuation of raw water quality, high precipitation efficiency and good hardness removal effect, and can reduce the hardness of the crevice water from 1000mg/L to 100-150 mg/L so as to meet the water inlet requirement of membrane recycling treatment and reduce the influence of the crevice water on equipment and pipeline scaling.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a hardness treatment device for groundwater seal cave depot crevice water provided by the embodiment of the utility model;

FIG. 2 is a schematic diagram of a top view structure of a hardness treatment device for groundwater seal cave depot crevice water according to an embodiment of the utility model;

FIG. 3 is a schematic view illustrating an internal structure of an energy dissipating tank according to some embodiments of the present utility model;

FIG. 4 is a schematic view illustrating an internal structure of an energy dissipating tank according to other embodiments of the present utility model;

fig. 5 is a side sectional view of a sedimentation tank according to an embodiment of the present utility model.

Reference numerals:

1-a water inlet pipe; 2-an energy dissipation tank; 21-a baffle; 3-removing the hard pool; 31-a first hard removal tank; 32-a second hard removal tank; 4-a coagulation tank; 5-flocculation tank; 51-a guide cylinder; 52-adding a ring; 521-flushing pipe; 6-a sedimentation tank; 61-inclined tube; 610-a water collection sump; 611-flushing a reserved interface of the inclined tube; 62-a mud scraper; 63-a sludge discharge pipe; 64-a sludge pump; 65-a sludge return pipe; 66-sludge discharge pipes; 67-pipe ditch; 68-cover plate; 7-a neutralization tank; 71-a water outlet pipe; 8-water passing holes; 9-plug flow zone.

Detailed Description

The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings and detailed description, but it will be understood by those skilled in the art that the examples described below are some, but not all, examples of the present utility model, and are intended to be illustrative of the present utility model only and should not be construed as limiting the scope of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.

As shown in fig. 1 to 5, an embodiment of the present utility model provides a hardness treatment device for groundwater seal cave depot crevices water, which includes a hardness removal unit, a coagulation unit, a flocculation unit and a precipitation unit sequentially connected along a water flow direction, wherein a water inlet end of the hardness removal unit is provided with an energy dissipation unit, a water inlet pipe 1 is provided on the energy dissipation unit, a water outlet end of the precipitation unit is provided with a pH adjustment unit, wherein each treatment unit is provided with a container for providing a reaction, such as a reaction tank.

The water inlet pipe 1 is used for introducing the underground water seal cave depot crevice water to be treated into the energy dissipation unit, and in some specific embodiments of the utility model, a flowmeter (not shown in the figure) is arranged on the water inlet pipe 1 and used for detecting the flow of incoming water, so that the dosage is convenient to control.

The energy dissipation unit is used for buffering incoming water, stabilizing the quality of incoming water, reducing disturbance of the stirrer in the rear-end reaction tank due to water quality fluctuation, and the designed residence time of the incoming water in the energy dissipation unit is 1-2 min.

The hardness removing unit is used for removing calcium and magnesium ions in water to reduce the hardness of the water and avoid precipitation and hardening of high-hardness fractured water and other pollutants to cause equipment pollution and blockage.

The coagulation unit and the flocculation unit are used for destabilizing and aggregating particles into large flocs, and the formed flocs are settled in the precipitation unit for mud-water separation.

The pH adjusting unit is used for adjusting the pH value of the water to be neutral, and in some embodiments of the utility model, a pH meter (not shown in the figure) is arranged in the pH adjusting unit for detecting the pH value of the water.

The hardness treatment device for the underground water seal cave depot crevice water can be used for carrying out hardness removal treatment on crevice water, equipment pollution blockage caused by the problems of precipitation and hardening of crevice water in the recycling treatment process is avoided, the energy dissipation unit at the water inlet end can buffer incoming water, the water quality of incoming water is stabilized, disturbance of a stirrer in a rear-end reaction tank due to water quality fluctuation is reduced, the surface load of the device is high, the occupied area is small, the load change resistance is strong, the device is suitable for the condition of wide fluctuation of raw water quality, the precipitation efficiency is high, the hardness removal effect is good, and the hardness in crevice water can be reduced from 1000mg/L to 100-150 mg/L so as to meet the water inlet requirement of membrane recycling treatment, and the influence of the device on scaling of equipment and pipelines is reduced.

In the above technical scheme, further, the energy dissipation unit includes energy dissipation pond 2, inlet tube 1 establishes on the lateral wall of energy dissipation pond 2, remove hard unit and include except that hard pond 3, the coagulation unit includes coagulating basin 4, the flocculation unit includes flocculation basin 5, the sedimentation unit includes sedimentation tank 6, pH adjusting unit includes neutralization pond 7, energy dissipation pond 2, remove hard pond 3, it connects through water hole 8 in proper order to coagulate between pond 4 and the flocculation basin 5, a plurality of water holes 8 that set up along the rivers direction are arranged from top to bottom alternately, the purpose is the circulation path of extension water, avoid forming the short-flow and reduce the treatment effect.

In the above technical scheme, further, the hard removing tank 3 comprises a first hard removing tank 31 and a second hard removing tank 32, the energy dissipating tank 2, the first hard removing tank 31, the second hard removing tank 32 and the coagulation tank 4 are sequentially communicated through the water through holes 8, water in the energy dissipating tank 2 firstly enters the first hard removing tank 31 to remove magnesium ions in the water, then enters the second hard removing tank 32 to remove calcium ions, and enters the coagulation tank 4 to carry out coagulation treatment after the calcium ions are removed, hard removing agent adding pipes and stirrers are arranged in the first hard removing tank 31 and the second hard removing tank 32, the hard removing agent adding pipes are used for adding hard removing agents into the first hard removing tank 31 and the second hard removing tank 32, and the hard removing agents and the water can be fully mixed and reacted under the rapid stirring of the stirrers.

In some embodiments of the present utility model, the hardness removal agent added into the first hardness removal tank 31 is sodium hydroxide or lime, so as to enable the pH in the water to reach the hardness removal requirement, and simultaneously remove magnesium ions in the water, wherein the residence time of the water in the first hardness removal tank 31 is 3-5 min, and the rotation speed of the stirrer is 50-80 rpm; the hardness removing agent added into the second hardness removing tank 32 is sodium carbonate, the residence time of water in the second hardness removing tank 32 is 3-5 min, and the rotation speed of the stirrer is 50-80 rpm.

As shown in fig. 1, in the above technical solution, further, the water holes 8 at the water outlet ends of the water inlet pipe 1 and the energy dissipation tank 2 are staggered in the vertical direction, so as to prolong the flow path of water and avoid forming short flow.

In some embodiments of the utility model, the water inlet pipe 1 is arranged on the left side wall of the energy dissipation tank 2, the water passing holes 8 at the water outlet end of the energy dissipation tank 2 are positioned on the right side wall of the energy dissipation tank 2, and the water passing holes 8 at the water outlet ends of the water inlet pipe 1 and the energy dissipation tank 2 are arranged in a staggered manner in the front-back direction in the horizontal direction, so that the arrangement mode can further prolong the water flowing path and improve the energy dissipation effect.

In the above technical scheme, further, the water passing holes 8 of the water outlet ends of the water inlet pipe 1 and the energy dissipation tank 2 are distributed on the same side in the vertical direction, that is, the water passing holes 8 of the water outlet ends of the water inlet pipe 1 and the energy dissipation tank 2 are all located at the upper part of the energy dissipation tank 2, or the water passing holes 8 of the water outlet ends of the water inlet pipe 1 and the energy dissipation tank 2 are all located at the lower part of the energy dissipation tank 2, a baffle 21 is arranged at the position between the water inlet pipe 1 and the water passing holes 8 of the water outlet ends of the energy dissipation tank 2 in the energy dissipation tank 2, one end, close to the water inlet pipe 1, of the baffle 21 in the vertical direction is connected with the energy dissipation tank 2, a water flow channel is arranged between one end, far away from the water inlet pipe 1, of the baffle 21 in the vertical direction and the energy dissipation tank 2, and the function of the baffle 21 is to prevent slit water entering into the energy dissipation tank 2 from the water inlet pipe 1 from being directly discharged from the water passing holes 8 on the same side to form a short flow, so as not to achieve the buffering effect.

In some embodiments of the present utility model, as shown in fig. 3, the water passing holes 8 at the water outlet ends of the water inlet pipe 1 and the energy dissipating tank 2 are located at the lower part of the energy dissipating tank 2, a baffle 21 is arranged on the inner bottom wall of the energy dissipating tank 2, a water flow channel is formed between the upper end of the baffle 21 and the top plate of the energy dissipating tank 2, and water enters the left space of the energy dissipating tank 2 from the water inlet pipe 1 at the lower left part of the energy dissipating tank 2, continuously flows upwards, overflows to the right space of the energy dissipating tank 2 through the top of the baffle 21, and enters the hardness removing tank 3 from the water passing holes 8 at the lower right part of the energy dissipating tank 2.

In other embodiments of the present utility model, as shown in fig. 4, the water passing holes 8 at the water outlet ends of the water inlet pipe 1 and the energy dissipating tank 2 are located at the upper part of the energy dissipating tank 2, a baffle 21 is arranged on the inner top wall of the energy dissipating tank 2, a water flow channel is formed between the lower end of the baffle 21 and the bottom plate of the energy dissipating tank 2, water enters the left space of the energy dissipating tank 2 from the water inlet pipe 1 at the upper left part of the energy dissipating tank 2, enters the right space of the energy dissipating tank 2 through the water flow channel at the lower end of the baffle 21, and continuously flows upwards, and overflows from the water passing holes 8 at the upper right part of the energy dissipating tank 2 into the hardness removing tank 3.

In the above technical scheme, further, a coagulant dosing pipe and a stirrer are arranged in the coagulation tank 4, and are used for adding coagulant into the coagulation tank 4, fully mixing the coagulant with water, destabilizing particles and forming colloid through coagulation reaction.

In some embodiments of the utility model, the coagulant is polyaluminum chloride PAC, the addition amount of PAC is 20-50 mg/L, the residence time of water in the coagulation tank 4 is 7-10 min, and the rotating speed of a stirrer in the coagulation tank 4 is 50-80 rpm.

In the above technical scheme, further, a guide cylinder 51 is arranged in the flocculation tank 5, the outer side wall of the guide cylinder 51 is fixedly connected with the inner wall of the flocculation tank 5 through a plurality of guide plates, a stirrer with lifting effect is arranged in the guide cylinder 51, water enters the guide cylinder 51 from the bottom of the guide cylinder 51, flows upwards under the lifting effect of the stirrer and overflows from the upper part of the guide cylinder 51, water in the guide cylinder 51 enters and goes out upwards, which is beneficial to the formation of flocs, a feeding ring 52 is arranged at the lower part in the guide cylinder 51 and is used for feeding flocculant into the flocculation tank 5, a plurality of dosing ports evenly distributed along the circumference of the feeding ring 52 are arranged at the bottom of the feeding ring 52, the uniformity of dosing is ensured, the feeding ring 52 is respectively connected with a flocculant dosing pipe and a flushing pipe 521, the flocculant dosing pipe is used for adding flocculant into the dosing ring 52, the flocculant adsorbs colloid substances of the coagulation section through adsorption bridging and net capturing under the slow stirring of the stirrer so as to form larger flocs, the water inlet of the flushing pipe 521 is connected with an industrial water pipe and used for flushing the dosing ring 52 to avoid blocking the dosing ring 52, a valve is arranged on the flushing pipe 521 and used for controlling water inflow, preferably, one end of the flocculant dosing pipe close to the dosing ring 52 and one end of the flushing pipe 521 close to the dosing ring 52 are both provided with one-way valves, so that materials can only enter the dosing ring 52 from the flocculant dosing pipe and the flushing pipe 521, and cannot enter the flocculant dosing pipe and the flushing pipe 521 from the dosing ring 52, and the substances in the dosing ring 52 are prevented from flowing back into the flocculant dosing pipe or the flushing pipe 521.

In some embodiments of the utility model, the flocculant is polyacrylamide PAM, the dosing ring 52 is an annular tube of DN32, the reaction time of water in the flocculation tank 5 is 10-15 min, and the rotational speed of the stirrer in the flocculation tank 5 is 15-40 rpm.

In the above technical scheme, further, as shown in fig. 1, a plug flow area 9 is arranged between the flocculation tank 5 and the sedimentation tank 6, a water passing hole 8 at the water inlet end of the flocculation tank 5 is positioned at the upper part of the left side wall of the flocculation tank 5, a water outlet of the flocculation tank 5 is positioned at the lower part of the right side wall of the flocculation tank 5 and is communicated with the plug flow area 9, the upper part of the plug flow area 9 is communicated with the sedimentation tank 6, water in the coagulation tank 4 enters the flocculation tank 5 from the water passing hole 8 at the upper part and then enters the guide cylinder 51 from the bottom of the flocculation tank 5, and water overflowed from the upper part of the guide cylinder 51 enters the plug flow area 9 from the water outlet at the bottom of the flocculation tank 5 and finally enters the sedimentation tank 6 through an upper weir plate.

In the above technical scheme, further, the upper portion of sedimentation tank 6 is equipped with down tube 61, the effect of down tube 61 is mud-water separation, great floc subsides in sedimentation tank 6, the little floc that does not get to settle or is difficult for settling is separated by down tube 61, clear water is collected through water catch bowl 610, then get into neutralization tank 7 through the outlet canal, the bottom of sedimentation tank 6 is equipped with scraper 62, the bottom play mud mouth of sedimentation tank 6 is connected with dredge 63, the mud of sediment gets into the mud bucket and discharges through dredge 63 under the effect of scraper 62, the exit linkage of dredge 63 has dredge pump 64, dredge pump 64's exit linkage mud back flow 65 and mud exo-drain 66, the export and the bottom intercommunication of flocculation tank 5 of mud back flow 65, dredge pump 64 is taken out the mud of sediment, a portion is through mud back flow pipe 65 to flocculation tank 5, the purpose is to increase the content of granule and the reinforcing flocculation effect, suitable backward flow can improve the rate of suspended solid, another portion is handled through dredge exo 66, the below of sedimentation tank 6 is equipped with dredge 67 and is located in the pipe section 67 of pipe section 67 has been provided with dredge 67 in the pipe section, the pipe section 67 is in the pipe section of pipe 67 that is maintained under the bottom of the soil, the pipe section is convenient for the service in the pipe section of pipe section 67 is maintained in the top of pipe section 67.

In some embodiments of the present utility model, the length of the inclined tube 61 is 1m, the diameter is 80mm, the ascending flow rate of the inclined tube area is 8-15 m/s, the sludge discharge pump 64 adopts a screw pump, the reflux ratio of sludge is 3% -6%, and the pipe trench 67 is a cement pond arranged at the bottom of the sedimentation tank 6.

In the above technical solution, further, the position of the flushing pipe 521 above the sedimentation tank 6 is provided with the inclined pipe flushing reservation interface 611, the inclined pipe flushing reservation interface 611 is provided with a valve, when the inclined pipe 61 needs to be cleaned, the position of the inclined pipe flushing reservation interface 611 can be flexibly connected with a flexible pipe, the inclined pipe 61 is flushed on line without stopping production, the pollution and blockage of the inclined pipe 61 are avoided, and the treatment effect and the treatment efficiency are improved.

In the above technical scheme, further, an acid dosing pipe and a stirrer are arranged in the neutralization tank 7, the water after hardening removal is alkaline, the pH value is usually 10.5-11, the water is adjusted to be neutral and discharged through adding acid into the neutralization tank 7, the acid dosing pipe is used for adding acid into the neutralization tank 7, the rapid stirring of the stirrer can enable the acid to fully react with alkaline substances in the water, and a water outlet pipe 71 is arranged on the neutralization tank 7 and is used for discharging the treated water.

In some embodiments of the utility model, the acid added in the neutralization tank 7 is sulfuric acid, and the addition amount of sulfuric acid is 30-60 mg/L.

The working flow for carrying out the hardness removal treatment on the fracture water by adopting the hardness treatment device for the fracture water in the underground water seal cave depot provided by the utility model comprises the following steps:

the water in the energy dissipation tank 2 enters the first hard removal tank 31 through the water holes 8, sodium hydroxide or lime is added into the first hard removal tank 31, the water is fully mixed with the water under the rapid stirring of a stirrer to remove magnesium ions in the water, then the water in the first hard removal tank 31 enters the second hard removal tank 32 through the water holes 8, sodium carbonate is added into the second hard removal tank 32 to remove calcium ions in the water, after the reaction, the water in the second hard removal tank 32 enters the coagulation tank 4 through the water holes 8, coagulant is added into the coagulation tank 4, the coagulant and the water are fully mixed to form colloid through coagulation reaction under the rapid stirring action of the stirrer, the water after the coagulation reaction enters the flocculation tank 5 through the water holes 8, a flocculating agent is added into the flocculation tank 5, the flocculating agent is used for adsorbing colloid substances in a coagulation section through adsorption bridging and net capturing under the slow stirring to form larger flocs, the water with the flocs slowly enters the plug flow area 9 and the sedimentation tank 6, most of the flocs are precipitated in the sedimentation tank 6, the non-precipitated flocs are separated through the inclined pipe 61, the precipitated sludge is discharged through the sludge discharge pipe 63 and the sludge discharge pump 64, one part of the sludge is returned to the flocculation tank 5 through the sludge return pipe 65, the other part of the sludge is discharged through the sludge discharge pipe 66, the separated supernatant enters the neutralizing tank 7 at the rear end, acid is added into the neutralizing tank 7 for neutralization reaction with alkaline substances in the water, and the neutralized water is discharged through the water outlet pipe 71 or enters the rear end recycling treatment device.

While the utility model has been illustrated and described with reference to specific embodiments, it is to be understood that the above embodiments are merely illustrative of the technical aspects of the utility model and not restrictive thereof; those of ordinary skill in the art will appreciate that: modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some or all of the technical features thereof, without departing from the spirit and scope of the present utility model; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions; it is therefore intended to cover in the appended claims all such alternatives and modifications as fall within the scope of the utility model.

Claims (10)

1. The utility model provides a hardness processing apparatus of groundwater seal cave depot crack water, includes removes hard unit, coagulation unit, flocculation unit and precipitation unit that connect gradually along the rivers direction, its characterized in that: the water inlet end of the hard removing unit is provided with an energy dissipating unit, the energy dissipating unit is provided with a water inlet pipe, and the water outlet end of the precipitation unit is provided with a pH adjusting unit.

2. The hardness treatment device for the groundwater seal hole reservoir crevice water according to claim 1, wherein: the utility model discloses a water flow direction setting device, including the unit that removes hard, remove hard unit includes removes the hard pond, the unit that coagulates includes the coagulation pond, the flocculation unit includes the flocculation pond, the precipitation unit includes the sedimentation tank, the energy dissipation unit includes the energy dissipation pond, the inlet tube is established on the energy dissipation pond, pH adjusting unit includes the neutralization pond, the energy dissipation pond remove hard pond coagulate the pond with the flocculation pond between the water hole intercommunication that loops through, a plurality of along the water flow direction setting water hole arranges from top to bottom alternately.

3. The hardness treatment device for the groundwater seal hole reservoir crevice water according to claim 2, wherein: the hard removing pond comprises a first hard removing pond and a second hard removing pond, the energy dissipating pond, the first hard removing pond, the second hard removing pond and the coagulation pond are communicated through the water holes in sequence, and the first hard removing pond and the second hard removing pond are internally provided with a hard removing agent adding pipe and a stirrer.

4. The hardness treatment device for the groundwater seal hole reservoir crevice water according to claim 2, wherein: the water inlet pipe and the water passing holes at the water outlet end of the energy dissipation tank are staggered in the vertical direction.

5. The hardness treatment device for the groundwater seal hole reservoir crevice water according to claim 2, wherein: the water inlet pipe with the water hole of energy dissipation pond water outlet end is in the vertical direction homonymy distribution, be located in the energy dissipation pond the inlet tube with the position between the water hole is equipped with the baffle, the baffle be close to in the vertical direction the one end of inlet tube with the energy dissipation pond is connected, the baffle is kept away from in the vertical direction the one end of inlet tube with be equipped with the rivers passageway between the energy dissipation pond.

6. The hardness treatment device for the groundwater seal hole reservoir crevice water according to claim 2, wherein: the flocculation tank is internally provided with a guide cylinder, the outer side wall of the guide cylinder is fixedly connected with the inner wall of the flocculation tank through a plurality of guide plates, a stirrer with a lifting effect is arranged in the guide cylinder, the lower part in the guide cylinder is provided with a feeding ring, and the feeding ring is respectively connected with a flocculant dosing pipe and a flushing pipe.

7. The hardness treatment device for the groundwater seal hole reservoir crevice water according to claim 2, wherein: the flocculation tank is characterized in that a plug flow area is arranged between the flocculation tank and the sedimentation tank, a water passing hole at the water inlet end of the flocculation tank is positioned at the upper part of the flocculation tank, a water outlet of the flocculation tank is positioned at the lower part of the flocculation tank and is communicated with the plug flow area, and the upper part of the plug flow area is communicated with the sedimentation tank.

8. The hardness treatment device for the groundwater seal hole reservoir crevice water according to claim 2, wherein: the upper portion of sedimentation tank is equipped with the inclined tube, the bottom of sedimentation tank is equipped with the mud scraper, the bottom play mud mouth of sedimentation tank is connected with the mud pipe, the exit linkage of mud pipe has the mud pump, the exit linkage mud back flow of mud pump and the outer calandria of mud, the mud back flow with the bottom intercommunication of flocculation tank, the below of sedimentation tank is equipped with the trench, the underground pipe section of mud pipe is located in the trench, the top exit of trench is equipped with the apron.

9. The hardness treatment device for the groundwater seal hole reservoir crevice water according to claim 6, wherein: the position of the flushing pipe above the sedimentation tank is provided with an inclined pipe flushing reserved interface, and the inclined pipe flushing reserved interface is provided with a valve.

10. The hardness treatment device for the groundwater seal hole reservoir crevice water according to claim 2, wherein: the neutralization tank is internally provided with an acid dosing pipe and a stirrer, and the neutralization tank is provided with a water outlet pipe.