Destabilization coagulation separation device

Abstract

The utility model discloses a destabilization coagulation separation device and relates to the technical field of sewage treatment. Effluent of the coagulation reaction area enters the flocculation reaction area, effluent of the flocculation reaction area enters the shallow settlement area, an inclined plate is arranged in the middle of the shallow settlement area, a rotary mud scraper is arranged at the lower part of the shallow settlement area, supernate of the shallow settlement area enters the gravity settlement area, the gravity settlement area adopts winding corridor type design, and effluent of the gravity settlement area enters the water outlet groove. The device disclosed by the utility model has the beneficial effects that the gravity settling area is arranged behind the shallow settling area, colloidal particles which do not participate in flocculation are settled in the gravity settling area, the settling time of the colloidal particles is prolonged through the ambulatory design of the gravity settling area, and the settled colloidal particles flow back to the coagulation reaction area through the screw pump B to participate in reaction again after being gathered, so that the flocculation effect is improved. The height of the rectangular water outlet groove is in direct proportion to the flow velocity, the lifting height of the lifting rod is observed through the gradienter, the water outlet flow can be calculated, and metering is simple and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field especially relates to the destabilization coagulation separation device. BACKGROUND

[0002] In sewage treatment, the sewage is usually subjected to coagulation reaction (adding polyaluminum chloride) and flocculation reaction (adding polymer), after the coagulation reaction and the flocculation reaction, the colloidal particles in the sewage gather into large flocs, the flocs in the sewage have gravity sedimentation capacity, the flocs can be separated after being settled by the inclined plate shallow layer settlement, however, the effluent of the inclined plate shallow layer settlement contains some colloidal particles participating in the coagulation reaction, but the colloidal particles not participating in the flocculation, the gravity sedimentation speed of the colloidal particles is very slow, the ordinary shallow layer settlement cannot remove the colloidal particles, which affects the final effluent quality. SUMMARY

[0003] In order to solve the problem that the effluent quality needs to be improved in the existing sewage treatment, the utility model provides a destabilization coagulation separation device.

[0004] The utility model provides a technical scheme: the destabilization coagulation separation device, including coagulation reaction zone, flocculation reaction zone and shallow layer settlement area, the coagulation reaction zone is equipped with the water inlet, the coagulation reaction zone effluent enters the flocculation reaction zone, the flocculation reaction zone effluent enters the shallow layer settlement area, the shallow layer settlement area middle part is equipped with the inclined plate, lower part is equipped with the rotary mud scraper, the supernatant of shallow layer settlement area enters the gravity sedimentation zone, the gravity sedimentation zone adopts the cloister type design, the gravity sedimentation zone effluent enters the effluent tank,

[0005] The shallow layer settlement area is equipped with the sludge collecting pit at the bottom of rotary mud scraper, the sludge collecting pit has the pipeline connection screw pump A import in, the gravity sedimentation zone is equipped with the sludge collecting groove near the export part, the sludge collecting groove has the pipeline connection screw pump B import in, and the screw pump B export has the pipeline to the water inlet near of coagulation reaction zone.

[0006] The effluent tank is horizontally arranged, the section of the effluent tank is rectangular, one side of the effluent tank is equipped with the water inlet weir and is communicated with the gravity sedimentation zone, the other side of the effluent tank is equipped with the water outlet, the effluent tank is equipped with the buoy, the buoy is vertically arranged, the upper portion of the buoy is equipped with the lifting rod, the lifting rod is slidably connected with the guide sleeve, the guide sleeve is fixed on the inner wall of the effluent tank, and the lifting rod is engraved with a scale.

[0007] The screw pump B is controlled by frequency conversion.

[0008] The utility model discloses a beneficial effect is: through setting up gravity settlement area behind shallow settlement area, the colloidal particle not participating in flocculation gravitates here, and gravity settlement area is through the design of cloister, increases the settlement time of colloidal particle, and after the colloidal particle of settlement gathers, returns to coagulation reaction area through screw pump B and participates in the reaction again, improves the water quality of effluent, reduces the quantity of discharge sludge, and the liquid level height of rectangular effluent tank is proportional to the flow rate, and the height of lifting rod is observed through the level, and the effluent flow can be calculated, and the measurement is simple and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0009] BRIEF DESCRIPTION OF DRAWINGS Figure 1 It is the structure schematic diagram of the utility model;

[0010] BRIEF DESCRIPTION OF DRAWINGS Figure 2 It is the A place of attached Figure 1 Enlarged view;

[0011] BRIEF DESCRIPTION OF DRAWINGS Figure 3 It is the plan view of gravity settlement area in the utility model.

[0012] In the drawing, 1 is coagulation reaction area, 2 is flocculation reaction area, 3 is water inlet, 4 is shallow settlement area, 5 is rotary mud scraper, 6 is inclined plate, 7 is gravity settlement area, 8 is effluent tank, 9 is mud collecting pit, 10 is screw pump A, 11 is screw pump B, 12 is mud collecting tank, 13 is float, 14 is guide sleeve, 15 is lifting rod, 16 is water outlet, 17 is water inlet weir. DETAILED DESCRIPTION

[0013] As Figures 1 to 3 Shown, the destabilization and aggregation separation device includes coagulation reaction area 1, flocculation reaction area 2 and shallow settlement area 4, and coagulation reaction area 1 is equipped with water inlet 3, and the effluent of coagulation reaction area 1 enters flocculation reaction area 2, and the effluent of flocculation reaction area 2 enters shallow settlement area 4, and the middle part of shallow settlement area 4 is equipped with inclined plate 6, and the lower part is equipped with rotary mud scraper 5, and the supernatant of shallow settlement area 4 enters gravity settlement area 7, and gravity settlement area 7 adopts the design of cloister, and the effluent of gravity settlement area 7 enters effluent tank 8.

[0014] Shallow settlement area 4 is equipped with mud collecting pit 9 at the bottom of rotary mud scraper 5, and the mud collecting pit 9 has pipeline connection screw pump A 10 import, and the extracted sludge is discharged, and gravity settlement area 7 is equipped with mud collecting tank 12 near the export part, and the mud collecting tank 12 has pipeline connection screw pump B 11 import in it, and the outlet of screw pump B 11 has pipeline to the water inlet 3 near coagulation reaction area 1.

[0015] By setting gravity settling zone 7 behind shallow subsidence zone 4, the colloidal particles not participating in flocculation settle by gravity in the gravity settling zone 7, the gravity settling zone 7 is designed in a meandering way to increase the settling time of colloidal particles, and the settled colloidal particles are returned to the coagulation reaction zone 1 by screw pump B11 to participate in the reaction again, thereby improving the water quality and reducing the amount of discharged sludge.

[0016] The outlet tank 8 is horizontally arranged, the cross section of the outlet tank 8 is rectangular, one side of the outlet tank 8 is provided with a water inlet weir 17 communicating with the gravity settling zone 7, the other side of the outlet tank 8 is provided with a water outlet 16, the outlet tank 8 is provided with a float 13, the float 13 is vertically arranged, the upper part of the float 13 is provided with a lifting rod 15, the lifting rod 15 is slidingly connected with a guide sleeve 14, the guide sleeve 14 is fixed on the inner wall of the outlet tank 8, the lifting rod 15 is engraved with a scale, the liquid level of the rectangular outlet tank 8 is in a proportional relationship with the flow rate, the outlet flow can be calculated by observing the lifting height of the lifting rod 15 through the level meter, and the metering is simple and reliable.

[0017] The screw pump B11 is controlled by frequency conversion, and the rotating speed of the pump is adjusted according to the sludge content in the sewage.

Claims

1. A destabilization and coagulation separation device comprising a coagulation reaction zone (1), a flocculation reaction zone (2) and a shallow sedimentation zone (4), characterized in that: The coagulation reaction zone (1) is provided with a water inlet (3), the water outlet of the coagulation reaction zone (1) enters the flocculation reaction zone (2), the water outlet of the flocculation reaction zone (2) enters the shallow sedimentation zone (4), the middle part of the shallow sedimentation zone (4) is provided with an inclined plate (6), the lower part is provided with a rotating mud scraper (5), the supernatant of the shallow sedimentation zone (4) enters the gravity sedimentation zone (7), the gravity sedimentation zone (7) adopts a corridor type design, the water outlet of the gravity sedimentation zone (7) enters the water outlet tank (8); The shallow sedimentation zone (4) is provided with a mud collecting pit (9) at the bottom of the rotating mud scraper (5), the mud collecting pit (9) is provided with a pipeline connected screw pump A (10) inlet, the gravity sedimentation zone (7) is provided with a mud collecting tank (12) near the outlet, the mud collecting tank (12) is provided with a pipeline connected screw pump B (11) inlet, and the outlet of the screw pump B (11) is connected to the water inlet (3) of the coagulation reaction zone (1) through a pipeline.

2. The metastable flocculation separation device of claim 1, wherein: The water outlet tank (8) is horizontally arranged, the cross section of the water outlet tank (8) is rectangular, one side of the water outlet tank (8) is provided with a water inlet weir (17) connected with the gravity sedimentation zone (7), the other side of the water outlet tank (8) is provided with a water outlet (16), the water outlet tank (8) is provided with a float (13), the float (13) is vertically arranged, the upper part of the float (13) is provided with a lifting rod (15), the lifting rod (15) is slidably connected with a guide sleeve (14), the guide sleeve (14) is fixed on the inner wall of the water outlet tank (8), and the lifting rod (15) is engraved with a scale.

3. The metastable flocculation separation device of claim 1, wherein: The screw pump B (11) is frequency controlled.

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