CN210133956U - Be used for high-efficient sedimentation tank to remove hard dosing device - Google Patents
Be used for high-efficient sedimentation tank to remove hard dosing device Download PDFInfo
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- CN210133956U CN210133956U CN201920464110.1U CN201920464110U CN210133956U CN 210133956 U CN210133956 U CN 210133956U CN 201920464110 U CN201920464110 U CN 201920464110U CN 210133956 U CN210133956 U CN 210133956U
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Abstract
The utility model discloses a be used for high-efficient sedimentation tank to remove hard medication dosing device, including coagulating zone, flocculation district, the crossing flow tube that coagulating zone bottom set up connects the flocculation district, and the inside in flocculation district is provided with the draft tube, and the inside in flocculation district is provided with the coagulant and throws the feeder tube, and the inside of draft tube is provided with slaked lime respectively and throws feeder tube, flocculating agent and throw the feeder tube, and slaked lime throws the feeder tube and sets up in the lower part of draft tube, and the flocculating agent is thrown the feeder tube and is set up in the upper portion of draft tube, and the coagulant that the feeder tube was thrown to the. The novel design adopts the chemical precipitation method, chemical agent is reasonably added, the reaction can reach a balance point within a few minutes, crystal nuclei can grow up rapidly, hardness in water can be removed by gravity precipitation, water outlet is stable, the novel chemical precipitation method is a good innovation scheme, and the novel chemical precipitation method has a good market popularization prospect.
Description
Technical Field
The utility model relates to a sewage, sludge treatment field, in particular to are used for high-efficient sedimentation tank to remove hard medication dosing device.
Background
The sedimentation tank is a structure for removing suspended matters in water by applying sedimentation and is equipment for purifying water. The suspended substances in the water are removed by utilizing the natural sedimentation or coagulating sedimentation of the water. The sedimentation tank is divided into a horizontal sedimentation tank and a vertical sedimentation tank according to the water flow direction. The settling effect is determined by the flow rate of the water in the settling tank and the residence time of the water in the tank. In order to improve the sedimentation effect and reduce the land occupation area, a honeycomb inclined tube counter-current sedimentation tank, an accelerated clarification tank, a pulse clarification tank and the like are mostly adopted at present.
A complete set of efficient sedimentation tank is composed of three reaction devices of steel structures or concrete structures which are arranged in series. The clarification function of the high-efficiency sedimentation tank is realized by three independent process combinations with specific functions, namely rapid coagulation, flocculation and sedimentation. When the hardness in the incoming water is too high, chemical agents need to be added to remove the hardness in the water, but the existing mode of adding the chemical agents is unreasonable, so that the waste of the agents is caused, the hardness in the water cannot be effectively removed, and the practicability is poor.
In view of the above, there is a need for a device for removing hard drug from a sedimentation tank, which solves the problems of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be used for high-efficient sedimentation tank to remove hard medication dosing device, the modern design, simple structure, chemical addition is thrown rationally, can effectively detach the hardness of aquatic, and the practicality is excellent, has solved prior art's defect.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
the utility model provides a remove hard dosing device for high-efficient sedimentation tank, includes coagulation district, flocculation district, the overflowing pipe that the coagulation district bottom set up connects the flocculation district, the inside in flocculation district is provided with the draft tube, the inside in flocculation district is provided with the coagulant and throws the pipe, the inside of draft tube is provided with slaked lime respectively and throws the pipe, the flocculating agent throws the pipe and sets up in the lower part of draft tube, the flocculating agent is thrown the pipe and is set up in the upper portion of draft tube, the flocculating agent of throwing the pipe of flocculating agent adopts the Fe salt, the flocculating agent of throwing the pipe of flocculating agent adopts PA.
Further, the hydrated lime feeding pipe is positioned at the position of about 300-500mm above the outlet of the overflowing pipe from the coagulation area to the flocculation area;
further, the flocculating agent feeding pipe adopts an annular porous pipe, and the annular porous pipe is positioned at the position of about 100-200mm upstream of the flocculating vortex propeller blade.
Further, the inside of coagulating zone and draft tube all is provided with the agitator, and the agitator includes the puddler, installs stirring vane around the puddler.
Furthermore, the side of the coagulation area is provided with an inlet channel for leading in sewage.
Furthermore, a sludge circulation pipeline is arranged on the overflow pipe from the coagulation area to the flocculation area.
The utility model has the advantages that: the novel design adopts the chemical precipitation method, and chemical agent is thrown rationally, and the reaction can reach the equilibrium point in a few minutes, and the crystal nucleus can grow up rapidly, can borrow gravity to deposit and get rid of aquatic hardness, and the practicality is excellent, and it is stable to go out water, is a fine innovation scheme, has very much the marketing prospect.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments:
FIG. 1 is a block diagram of the present invention;
in the figure 100-coagulation zone; 110-a guide shell; 120-water inlet channel; 130-a coagulant adding pipe; 140-a slaked lime feeding pipe; 150-a flocculating agent feeding pipe, 160-an overflow pipe, 170-a flocculation area and 180-a sludge circulating pipe.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
As shown in fig. 1, a hard removing and dosing device for a high-efficiency sedimentation tank comprises a coagulation area 100 and a flocculation area 170, wherein an overflow pipe 160 arranged at the bottom of the coagulation area 100 is connected with the flocculation area 170, a guide cylinder 110 is arranged inside the flocculation area 170, a coagulant adding pipe 130 is arranged inside the flocculation area 170, a slaked lime adding pipe 140 and a flocculant adding pipe 150 are respectively arranged inside the guide cylinder 110, the slaked lime adding pipe 140 is arranged at the lower part of the guide cylinder 110, the flocculant adding pipe 150 is arranged at the upper part of the guide cylinder 110, a coagulant of the coagulant adding pipe 130 is made of Fe salt, and a flocculant of the flocculant adding pipe 150 is made of PAM.
In addition, the flocculating agent feeding pipe 150 is an annular porous pipe. The inside of coagulating zone 100 and draft tube 110 all is provided with the agitator, and the agitator includes the puddler, and stirring vane is installed around the puddler, and the side of coagulating zone 170 is provided with the inlet channel 110 of leading-in mud, and overflow pipe 160 is provided with the circulating sludge pipe 180 of leading-in mud.
In the water treatment process, the utility model discloses remove temporary hardness in the sewage, adopt to throw and throw lime milk. Ca in water2+And Mg2+The ions constitute the hardness of the water, a process by which some or even all of the hardness is removed, called softening of the water.
Chemical softening is a process of removing hardness and the like contained in water by forming a poorly soluble compound by an appropriate chemical action by using a chemical precipitation method according to the principle of solubility product.
Lime removes carbon dioxide and carbonate hardness from the water and converts the non-carbonate hardness of magnesium to a corresponding calcium hardness. Lime softening is mainly used to remove carbonate hardness and alkalinity in water, and is suitable for water with high temporary hardness and low permanent hardness.
Ca (OH) produced by lime in water2Respectively producing CaCO from calcium carbonate and magnesium carbonate in water3And Mg (OH)2And (4) precipitating. When there is enough CaCO in the water3In the case of crystal nuclei, the reaction reaches an equilibrium point within a few minutes, and the crystal nuclei grow rapidly and can be removed by gravity precipitation.
The chemical reaction equation is as follows:
CO2+Ca(OH)2→CaCO3↓+H2O
Ca(HCO3)2+Ca(OH)2→2CaCO3↓+2H2O
Mg(HCO3)2+Ca(OH)2→MgCO3↓+CaCO3↓+H2O
MgCO3+Ca(OH)2→Mg(OH)2↓+CaCO3↓
therefore, the adding sequence and adding point of the coagulant and lime are particularly critical in the lime softening process.
The specific adding point is as follows;
coagulant: the coagulation area is close to the water inlet channel;
lime is added at the position of about 300-500mm above the outlet from the coagulation area to the overflowing pipe 4 of the flocculation area;
flocculating agent: the water is injected into the guide shell through an annular porous pipe positioned in the guide shell, and the annular porous pipe is positioned at the position of about 100-200mm upstream of the flocculation vortex propeller blade.
The utility model has the advantages that:
the retention time of the coagulation zone is not less than 3min, and the Fe coagulant can be ensured3+Fully reacts with organic colloid in the sewage, and is beneficial to crystal growth in the lime softening process;
effective prevention of coagulant Fe3+And Ca (OH)2A chemical reaction takes place to produce Fe (OH)3Precipitation, increase of Ca (OH)2The medicament utilization rate avoids the occurrence of side reaction and reduces the additional consumption of the medicament.
2Fe3++3Ca(OH)2→1Fe(OH)3↓+3Ca2+
Two-stage stirring is adopted, and an additional hard removing pool is not needed, so that the civil engineering cost is saved.
The working principle of the lime hardness removal mode high-efficiency sedimentation tank is as follows:
the water enters a coagulation area through a water distribution channel, a coagulant is added, the coagulant is subjected to hydrolysis reaction to generate a large amount of charged ions, an original colloid charge system is neutralized, suspended matter impurities in the water are unstably coagulated to form a large amount of flocculent particles, and the mixed liquid enters the flocculation area through a pipeline. The flocculation area is provided with a guide shell, and a flocculating agent is injected into the guide shell through an annular porous pipe positioned in the guide shell. The slaked lime is added above the outlet of the flow pipe from the coagulation area to the flocculation area.
The sewage that contains a large amount of flocculations leaves the flocculation district from the bottom in flocculation district, gets into the clarification district from the upper portion in clarification district via the curing district, later flows down to below the pipe chute, and the guide wall guide rivers flow to the bottom of clarification tank, avoids directly flowing to the pipe chute clarification district at pond top, causes the short current. The deposited flocs are collected by a mud scraper and finally concentrated to the center of the bottom of the tank.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a be used for high-efficient sedimentation tank to remove hard medication dosing device, includes coagulation zone, flocculation area, its characterized in that: the overflowing pipe arranged at the bottom of the coagulation area is connected with the flocculation area, the inside of the flocculation area is provided with a guide cylinder, the inside of the flocculation area is provided with a coagulant adding pipe, the inside of the guide cylinder is respectively provided with a slaked lime adding pipe and a flocculant adding pipe, the slaked lime adding pipe is arranged at the lower part of the guide cylinder, the flocculant adding pipe is arranged at the upper part of the guide cylinder, the coagulant adding pipe adopts Fe salt, and the flocculant adding pipe adopts PAM.
2. The high efficiency sedimentation tank de-harddosing device of claim 1, wherein: the flocculating agent feeding pipe adopts an annular porous pipe.
3. The high efficiency sedimentation tank de-harddosing device of claim 1, wherein: the inside of coagulating zone and draft tube all is provided with the agitator, and the agitator includes the puddler, installs stirring vane around the puddler.
4. The high efficiency sedimentation tank de-harddosing device of claim 1, wherein: the side of the coagulation area is provided with a water inlet channel for leading in sewage.
5. The high efficiency sedimentation tank de-harddosing device of claim 1, wherein: and a sludge circulating pipeline is arranged on the overflow pipe from the coagulation area to the flocculation area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920464110.1U CN210133956U (en) | 2019-04-08 | 2019-04-08 | Be used for high-efficient sedimentation tank to remove hard dosing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920464110.1U CN210133956U (en) | 2019-04-08 | 2019-04-08 | Be used for high-efficient sedimentation tank to remove hard dosing device |
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| Publication Number | Publication Date |
|---|---|
| CN210133956U true CN210133956U (en) | 2020-03-10 |
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| CN201920464110.1U Active CN210133956U (en) | 2019-04-08 | 2019-04-08 | Be used for high-efficient sedimentation tank to remove hard dosing device |
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| CN (1) | CN210133956U (en) |
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