Efficient precipitation integrated equipment for treating industrial wastewater

Abstract

The utility model discloses efficient precipitation integrated equipment for treating industrial wastewater. The efficient precipitation integrated equipment comprises a coagulation zone, a flocculation zone, a transition zone, a precipitation zone, a water outlet device and a sludge discharge system, a water inlet pipe is arranged at the upper part of the coagulation area and is connected with a coagulation dosing pipe; a central cylinder is arranged in the middle of the flocculation area, a flocculation dosing pipe is arranged at the top of the central cylinder, the bottom of the coagulation area is communicated with the bottom of the central cylinder, the top of the central cylinder is communicated with the flocculation area, the bottom of the flocculation area is communicated with the bottom of the transition area, the transition area is separated from the sedimentation area through a baffle, and the sedimentation area is communicated with the bottom of the coagulation area. The top of the baffle is provided with a notch communicating the transition area and the settling area. The efficient precipitation integrated equipment for treating industrial wastewater has the advantages of small occupied area, high treatment efficiency, good effect, small dosage and stable operation.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial wastewater treatment, in particular to an integrated equipment for treating industrial wastewater with high efficiency precipitation. Background Art

[0002] Traditional treatment processes have low efficiency and incomplete treatment of industrial wastewater. In industrial wastewater treatment, sedimentation process is an important link. The operation status of the equipment affects the effluent quality. Currently, more sedimentation equipment is used, and coagulation and sedimentation are separated, which is inefficient and occupies a large area.

[0003] The Chinese patent application number 202123429998.1 discloses an integrated coagulation and sedimentation device for efficiently treating industrial wastewater, including a casing, a reaction tank is provided on one side of the casing, a sedimentation tank is provided inside the casing on one side of the reaction tank, a clear water tank is provided inside the casing on the side of the sedimentation tank away from the reaction tank, a liquid inlet is provided on the outer wall of one side of the casing, one end of the liquid inlet extends to the inside of the reaction tank, a liquid outlet is provided on the outer wall of the casing on the side away from the liquid inlet, one end of the liquid outlet extends to the inside of the clear water tank, a second liquid outlet is provided on the inner wall of the clear water tank on the side away from the liquid outlet, and a first liquid outlet is provided on the inner wall of the sedimentation tank on the side away from the second liquid outlet. However, the equipment has a complex structure and occupies a large area.

[0004] The Chinese patent application number 202223351986.6 discloses an integrated coagulation and sedimentation device for efficiently treating industrial wastewater, including a box body, wherein the top and bottom of the box body are respectively provided with a first treatment chamber and a second treatment chamber, a first motor is fixedly installed at the top position of one side of the box body, the first motor is fixedly connected to a first spindle through an output end of one side thereof, three blades are fixedly installed on the surface of the first spindle, a filter cartridge is fixedly installed at the center of the second treatment chamber, and a second motor is fixedly installed at the center of the bottom of the box body. The integrated coagulation and sedimentation device for efficiently treating industrial wastewater, through the cooperation of the first motor, the first spindle and the blades, after the coagulant and wastewater are poured into the first treatment chamber, the first motor drives the blades to rotate, and the rotation of the blades drives the wastewater to generate water flow. Although the wastewater treatment efficiency is improved, it cannot effectively reduce the dosage of the reagent and improve the impact resistance. Utility Model Content

[0005] The utility model aims to solve the problems existing in the existing industrial wastewater precipitation technology, such as "large equipment footprint, low treatment efficiency, poor treatment effect, large dosage". To this end, the utility model proposes an integrated equipment for treating industrial wastewater with high efficiency precipitation, which has the advantages of small footprint, high treatment efficiency, good effect, small dosage and stable operation.

[0006] The utility model solves the above problems through the following technical means:

[0007] An integrated equipment for treating industrial wastewater with high-efficiency sedimentation comprises a coagulation zone, a flocculation zone, a transition zone, a sedimentation zone, a water outlet device and a mud discharge system; a water inlet pipe is arranged at the upper part of the coagulation zone, and the water inlet pipe is connected with a coagulation dosing pipe; a central tube is arranged in the middle part of the flocculation zone, and a flocculation dosing pipe is arranged at the top of the central tube; the bottom of the coagulation zone is connected with the bottom of the central tube, the top of the central tube is connected with the flocculation zone, the bottom of the flocculation zone is connected with the bottom of the transition zone, the transition zone is separated from the sedimentation zone by a baffle, and a gap connecting the transition zone and the sedimentation zone is arranged at the top of the baffle.

[0008] Furthermore, a coagulation mixer is provided in the middle of the coagulation zone.

[0009] Furthermore, a flocculation mixer is provided in the middle of the central tube.

[0010] Furthermore, an inclined tube filler is arranged at the upper part of the sedimentation zone, and the water outlet device is arranged above the inclined tube filler.

[0011] Furthermore, a mud level meter is provided below the inclined tube filler.

[0012] Furthermore, the sedimentation zone is provided with a sludge concentrator.

[0013] Furthermore, a sludge hopper is provided at the bottom of the sedimentation zone, and the sludge discharge system is connected to the sludge hopper.

[0014] Furthermore, the sludge discharge system includes a sludge discharge unit and a sludge return unit.

[0015] Wastewater enters from the water inlet pipe, which is equipped with a coagulation dosing pipe. Coagulant is added to the water inlet pipe for more uniform mixing, which can effectively reduce the amount of dosing.

[0016] The water inlet of the flocculation zone is at the bottom, guided by the central tube, and the water flow slowly rises to the top of the central tube and then overflows to the surroundings. A flocculation mixer is arranged in the central tube, and the water outlet of the flocculation zone is arranged at the bottom. The flocculation dosing pipe extends below the water surface in the central tube.

[0017] The flocculation zone and the sedimentation zone are separated by setting a baffle; the transition zone can reduce the impact of water from the flocculation zone on the sedimentation zone, which is beneficial to improving the sedimentation efficiency.

[0018] The installation height of the inclined tube filler is 0.8-1.0m below the sedimentation area page, the installation angle is 60°, the filler bracket is welded and fixed in the pool with angle steel and threaded steel, and the inclined tube filler is fixed above with wire rope.

[0019] The sludge hopper is located at the central bottom of the sedimentation area, and a sludge discharge pipe is arranged in the sludge hopper.

[0020] The sludge discharge system includes a sludge discharge unit and a sludge return unit. The sludge in the sedimentation area is discharged regularly through the sludge discharge unit, and part of the sludge is transported to the coagulation area through the sludge return unit to increase the coagulation and flocculation effects.

[0021] The water outlet device is provided with an adjustable triangular water outlet weir, and the height of the water outlet weir is adjusted according to the water inflow condition of the equipment, so as to improve the overall impact resistance of the equipment.

[0022] Beneficial effects of the utility model:

[0023] 1. The utility model completely separates the coagulation and flocculation reactions and the dosing of drugs, which greatly reduces the mutual interference between the coagulation reaction and the flocculation reaction, improves the reaction efficiency, is especially beneficial to the formation of alum flocs in the flocculation reaction, and reduces the dosage of drugs.

[0024] 2. The utility model sets a transition zone between the flocculation zone and the sedimentation zone, which effectively reduces the impact of water from the flocculation zone on the sedimentation zone, improves the sedimentation efficiency, and makes the effluent more stable.

[0025] 3. Furthermore, the surface load of the sedimentation zone of the utility model is higher than that of the conventional sedimentation tank due to the inclined tube filler and sludge concentration, which reduces the area of ​​the sedimentation zone. At the same time, the coagulation zone and flocculation zone are more efficient, and their sizes are smaller than those of the conventional reaction tank, thereby reducing the overall area of ​​the equipment.

[0026] 4. The utility model can set up sludge return through the sludge discharge system, reducing the dosage of reagents and increasing the sedimentation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] Figure 1 This is a schematic diagram of the structure of an integrated equipment for efficient sedimentation of industrial wastewater treatment.

[0029] In the figure: 1. Coagulation zone; 2. Flocculation zone; 3. Sedimentation zone; 4. Sludge discharge system; 5. Coagulation mixer; 6. Center tube; 7. Flocculation mixer; 8. Transition zone; 9. Inclined tube filler; 10. Mud level meter; 11. Sludge thickener; 12. Sludge hopper; 13. Water outlet device; 14. Baffle; 15 Coagulation dosing pipe; 16. Flocculation dosing pipe. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer and more specific. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0031] like Figure 1As shown, an integrated high-efficiency sedimentation equipment for treating industrial wastewater in this embodiment includes a coagulation zone 1, a flocculation zone 2, a sedimentation zone 3, a sludge discharge system 4, a transition zone 8 and a water outlet device 13; a water inlet pipe is arranged at the upper part of the coagulation zone, the water inlet pipe is connected to a coagulation dosing pipe 15, and a coagulation mixer 5 is arranged in the middle part of the coagulation zone.

[0032] A central tube 6 is arranged in the middle of the flocculation zone 2. The central tube is connected to the coagulation zone at the bottom. A flocculation mixer 7 is arranged in the middle of the central tube. A flocculation dosing pipe 16 is arranged at the top of the central tube.

[0033] The top of the central tube 6 is connected to the overflow of the flocculation zone 2, and the flocculation zone 2 is connected to the transition zone 8 at the bottom. The transition zone 8 is separated from the sedimentation zone 3 by a baffle 14, and a gap connecting the transition zone and the sedimentation zone is provided on the top of the baffle.

[0034] An inclined tube filler 9 is arranged at the upper part of the sedimentation zone, the water outlet device 13 is located above the inclined tube filler, and a mud level meter 10 is arranged below the inclined tube filler 9.

[0035] The sedimentation area is provided with a sludge thickener 11 , a sludge hopper 12 is provided at the bottom of the sedimentation area, and the sludge discharge system 4 is connected to the sludge hopper 12 .

[0036] During operation, water flows into the coagulation zone through the water inlet pipe, and the coagulation mixer speed is controlled to ensure that the water body undergoes sufficient coagulation reaction. The coagulant is added to the water inlet pipe through the coagulation dosing pipe 15 and fully mixed with the inlet water. The contact time and reaction time of the agent and the water body are longer, which is conducive to improving the coagulation reaction effect.

[0037] Water enters the bottom of the flocculation zone, passes through the central tube 6, and the water level rises to the top of the central tube and overflows to the surroundings. The flocculation dosing pipe 16 extends into the central tube 6 through the top of the flocculation zone to add drugs and control the rotation speed of the flocculation mixer 7 to form alum flowers with the best precipitation particle size.

[0038] The transition zone 14 is used to reduce the impact of the water in the flocculation zone on the sedimentation zone and destroy the sedimentation effect.

[0039] The upper part of the sedimentation zone is provided with an inclined tube filler 9. The flocs enter the sedimentation tank and continuously sink through the inclined tube under the action of gravity and settle at the bottom. At the same time, under the action of the sludge concentrator 11, the sludge is concentrated to form sludge and sinks into the bottom sludge hopper 12.

[0040] The upper part of the sedimentation area is provided with a water outlet device 13, which adopts an adjustable triangular water outlet weir plate, and the height of the water outlet page is adjusted according to the water level in the sedimentation area and the mud-water separation effect; the overall impact resistance of the equipment can be improved.

[0041] A mud level meter 10 is arranged in the middle of the sedimentation area to monitor the sludge thickness in the sedimentation area in real time and control the sludge discharge amount according to the mud level.

[0042] A sludge hopper 12 is arranged at the bottom of the sedimentation area, and the concentrated sludge sinks into the sludge hopper for temporary storage, and when a certain amount is reached, it is pumped out through a sludge discharge pipe at the bottom of the sludge hopper.

[0043] The sludge discharge system comprises a sludge discharge unit and a sludge return unit. Part of the sludge is discharged through the sludge discharge unit, and part of the sludge is transported to the coagulation area through the sludge return unit to increase the coagulation and flocculation effects.

[0044] To sum up, the present application is a new type of high-efficiency integrated precipitation equipment, which is mainly used in the treatment of difficult-to-degrade industrial wastewater; by controlling the coagulation and flocculation reaction time and stirring speed, the amount of added medicine can be reduced, and it has the advantages of fast sedimentation speed and good separation effect.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An integrated equipment for efficient precipitation of industrial wastewater, characterized by: It includes a coagulation zone, a flocculation zone, a transition zone, a sedimentation zone, a water outlet device and a mud discharge system; a water inlet pipe is arranged on the upper part of the coagulation zone, and the water inlet pipe is connected with a coagulation dosing pipe; a central tube is arranged in the middle of the flocculation zone, and a flocculation dosing pipe is arranged on the top of the central tube; the bottom of the coagulation zone is connected with the bottom of the central tube, the top of the central tube is connected with the flocculation zone, the bottom of the flocculation zone is connected with the bottom of the transition zone, the transition zone is separated from the sedimentation zone by a baffle, and a gap connecting the transition zone and the sedimentation zone is arranged on the top of the baffle.

2. The high-efficiency integrated precipitation equipment for treating industrial wastewater according to claim 1 is characterized in that: A coagulation mixer is arranged in the middle of the coagulation zone.

3. The high-efficiency integrated precipitation equipment for treating industrial wastewater according to claim 2 is characterized in that: A flocculation mixer is arranged in the middle of the central tube.

4. The high-efficiency integrated precipitation equipment for treating industrial wastewater according to claim 3 is characterized in that: An inclined tube filler is arranged on the upper part of the sedimentation zone, and the water outlet device is arranged above the inclined tube filler.

5. The high-efficiency integrated precipitation equipment for treating industrial wastewater according to claim 4 is characterized in that: A mud level meter is arranged below the inclined tube filler.

6. The high-efficiency integrated precipitation equipment for treating industrial wastewater according to claim 5 is characterized in that: The sedimentation zone is provided with a sludge thickener.

7. The high-efficiency integrated precipitation equipment for treating industrial wastewater according to claim 6 is characterized in that: A sludge hopper is provided at the bottom of the sedimentation zone, and the sludge discharge system is communicated with the sludge hopper.

8. The high-efficiency integrated precipitation equipment for treating industrial wastewater according to claim 7 is characterized in that: The sludge discharge system comprises a sludge discharge unit and a sludge return unit.

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