KR200368250Y1 - Coagulating and Precipitating Apparatus for Sewage and Wastewater Treatment System - Google Patents

Abstract

The present invention relates to a high-speed flocculation sedimentation treatment apparatus of a sewage treatment system that can maintain the water quality of the treated water by removing the sediment deposition phenomenon in the coagulation tank. The high speed flocculation sedimentation treatment device of the sewage water treatment system has a raw water inlet for supplying raw water to one side and a coagulation tank having a first stirrer inside thereof, a mixing tank connected with a cohesion tank and having a second stirrer inside thereof, And a settling tank having a third stirrer installed therein, and a settling tank connected to the settling tank and having a sludge collection hopper formed at the bottom thereof. In the lower part of the wall partitioning the coagulation tank and the settling tank, a plurality of sediment discharge holes are formed in a plurality of rows and columns to allow the sediment which can be deposited in the coagulation tank to smoothly flow out from the coagulation tank.

Description

Coagulating and Precipitating Apparatus for Sewage and Wastewater Treatment System

The present invention relates to a high speed flocculation sedimentation treatment device of a sewage water treatment system, and more particularly, to remove sediment deposits in a condensing tank so that maintenance can be performed smoothly while maintaining the quality of treated water well. It relates to a high speed flocculation sedimentation treatment apparatus.

In general, the high-speed flocculation sedimentation treatment apparatus is used to remove organic matter and suspended matter in sewage water using the principle of flocculation and sedimentation, and is widely used to purify purified water and factory wastewater, livestock wastewater, and domestic sewage.

However, the conventional high speed flocculation sedimentation treatment device has a problem in that the residence time of the treated water is shortened due to the problem that the precipitate gradually accumulates in the bottom of the coagulation tank. Therefore, the wastewater treatment efficiency is lowered over time, and there is a problem of emptying the condensing tank and cleaning regularly, and in the case of a sewage treatment plant that needs to be operated at all times, the cleaning operation is very difficult.

The present invention is to solve the problems of the prior art, an object of the present invention is to remove the sediment deposition phenomenon in the condensate tank to maintain the water quality of the treated water while maintaining a smooth maintenance of the wastewater treatment system It is to provide a high speed flocculation sedimentation treatment device.

The high speed flocculation sedimentation treatment apparatus of the sewage treatment system according to the present invention for achieving the above object is introduced from a coagulation tank, a mixing tank, a coagulation tank and a coagulation tank installed in order to remove organic matter and suspended matter in the waste water. A sedimentation tank for sedimentation of the sludge from the treated water, and a plurality of sediment discharge holes are formed in a plurality of rows and columns at the lower part of the wall partitioning the condensation tank and the sedimentation tank so that the sediment in the condensation tank is discharged from the condensing tank into the sedimentation tank. It is.

1 is a plan view schematically showing a high speed flocculation sedimentation treatment apparatus of a sewage treatment system according to the present invention,

Figure 2 is a partial cross-sectional view schematically showing the internal structure of the high speed flocculation sedimentation treatment apparatus of the sewage treatment system according to the present invention,

Figure 3 is a view showing a sediment discharge hole of the high speed flocculation sedimentation treatment apparatus of a wastewater treatment system according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: flocculation tank

12: first stirrer

14: raw water inlet

20: mixing tank

22: second stirrer

30: Condensation

32: 3rd stirrer

34: wall

36: discharge hole

40: sedimentation tank

44: inclined plate

46: Processing water overflow wear channel

48: treated water outlet

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 and 2 are a plan view and a partial cross-sectional view schematically showing a high-speed coagulation sedimentation treatment apparatus of the sewage treatment system according to the present invention, respectively, Figure 3 is a view showing the discharge hole of the sediment.

As shown, the high speed flocculation sedimentation treatment apparatus of the sewage treatment system according to the present invention is formed with a coagulation tank 10 in which a raw water inlet 14 for supplying raw water to one side and a first stirrer 12 is installed therein; , A mixing tank 20 connected in series with the coagulation tank 10 and having a second stirrer 22 installed therein, and a coagulation tank having a third stirrer 32 connected in series with the mixing tank 20 and installed therein 30 and the settling tank 40 is connected in series with the condensation tank 30, the sludge collection hopper 42 is formed on the bottom surface and the treated water outlet 48 is formed on one side.

In the lower portion of the wall 34 partitioning the coagulation tank 30 and the precipitation tank 40, as shown in FIG. 3, sediment which can be deposited in the coagulation tank 30 is settled from the coagulation tank 30. A plurality of sediment discharge holes 36 are formed to form a plurality of rows and columns to smoothly flow out into the inside. Preferably, the diameter of each precipitate discharge hole 36 is 1.3 cm to 1.7 cm, and the spacing between two neighboring precipitate discharge holes 36 is set to 8 cm to 12 cm.

A plurality of inclined plates 44 disposed to be inclined at regular intervals are installed at one upper side of the settling tank 40, and a treated water overflow wear channel for discharging the treated water passing through the inclined plate 44 at an upper portion of the inclined plate 44. 46 is installed. The inclined plate 44 forms an angle in the range of approximately 50 ° to 70 ° with the horizontal plane, the intermediate region may be bent at a predetermined angle, and the surface of the inclined plate 44 has a trapezoidal shape at regular intervals.

The sludge recycle pipe 52 communicating with the sludge collection hopper 42 is connected to the lower outer side of the settling tank 40, and the sludge recycle pipe 52 extends above the mixing tank 20. A recirculation pump 54 is installed in the middle of the recirculation pipe 52, and a cyclone separator 56 is installed at the end of the sludge recirculation pipe 52 extending upward of the mixing tank 20.

Hereinafter, the operation of the high speed flocculation sedimentation treatment apparatus of the wastewater treatment system according to the present invention configured as described above will be described.

Raw water flows into the coagulation tank 10 through the raw water inlet 14, injects coagulant (FeCl ₃ ) into the coagulation tank 10, and rapidly stirs by the first stirrer 12 to give a negative charge. The surface of the material is neutralized and phosphorus (PO ₄ ^3- ) contained in raw water is insoluble phosphate (FePO ₄ ). A polymer (anionic) is injected into the mixing tank 20 to agglomerate the floc condensed in the agglomeration tank 10, and microsand is injected to increase the agglomeration effect. Thereafter, after forming into a large floc through slow stirring by the third stirrer 32 in the condensation tank 30, it is precipitated in the settling tank (40). Precipitates are generated during the reaction process in the condensation tank 30, and the precipitates are formed through a plurality of discharge holes 36 provided in the wall 34 partitioning the condensing tank 30 and the settling tank 40. By being discharged into the settling tank 40, deposition phenomenon in the condensing tank 30 is prevented.

The treated water introduced into the settling tank 40 goes up through the inclined plate 44, and the precipitated solids flow down the inclined plate 44 to settle down. This inclined plate 44 lowers the settling height, and increases the settling area to have a faster settling speed. The treated water exiting the inclined plate 44 is discharged to the outside through the treated water outlet 48 after flowing through the treated water overflow wear channel 46.

On the other hand, the precipitated microsands and sludge mixture is collected at the bottom of the settling tank 40 and transferred to the cyclone separator 56 by the centrifugal sludge pump 54, and the sludge and the sludge inside the cyclone separator 56 by the forced force. Microsands are separated. The separated microsands are injected into the mixing tank 20 at the bottom of the cyclone separator 56 and reused, and the relatively light sludge is transferred for concentration or final disposal at the top of the cyclone separator 56.

As described in detail above, in the high speed flocculation sedimentation treatment apparatus of the sewage treatment system according to the present invention, sediment which can be deposited in the coagulation tank is introduced into the sedimentation tank through a plurality of discharge holes formed in the wall separating the coagulation tank and the sedimentation tank. By discharging, it is possible not only to maximize the residence time of the treated water in the condensation tank to maintain the treatment efficiency well, but also to eliminate the hassle of emptying and cleaning the condensing tank regularly.

Claims (2)

High-speed coagulation sedimentation treatment apparatus of sewage treatment system including a flocculation tank, a mixing tank, a condensation tank, and a settling tank for sedimentation of sludge from the treated water flowing from the coagulation tank are sequentially installed to remove organic matter and suspended matter in the sewage water. To Sewage water treatment, characterized in that a plurality of sediment discharge holes formed in a plurality of rows and columns in the lower portion of the wall partitioning the coagulation tank and the sedimentation tank so that the sediment in the coagulation tank is discharged from the coagulation tank into the sedimentation tank. High speed flocculation sedimentation treatment system. According to claim 1, wherein the diameter of the sediment discharge hole is 1.3cm to 1.7cm, the spacing between two adjacent sediment discharge hole is 8cm to 12cm, high speed coagulation sedimentation treatment apparatus of the sewage treatment system .