Aquaculture tail water ecological treatment system and vertical flow sedimentation tank thereof

Abstract

The utility model relates to an aquaculture tail water ecological treatment system and a vertical flow sedimentation tank thereof, which comprise a tank body, a water inlet canal and a plurality of sedimentation cavities arranged on two sides of the water inlet canal are arranged in the tank body, a vertical flow pipe is arranged in each sedimentation cavity, the upper end of each vertical flow pipe is higher than the liquid level of the corresponding sedimentation cavity, and the lower end of each vertical flow pipe is higher than the liquid level of the corresponding sedimentation cavity. The water inlet channel is connected with the vertical flow pipe through a water conveying pipe; a sludge discharging mechanism is arranged at the bottom of the precipitation cavity; an overflow weir is arranged at the upper part of each precipitation cavity and is connected with an overflow ditch through a communicating pipe. According to the vertical flow sedimentation tank, most sludge in aquaculture tail water can be removed, the sludge is settled to the bottom of the sedimentation cavity, the blockage problem is avoided, the sludge is discharged in time through the sludge discharging mechanism, only a small amount of sludge enters a next-stage treatment facility, and the next-stage treatment facility can be prevented from being blocked.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of water treatment equipment, especially an ecological treatment system for aquaculture tail water and a vertical flow sedimentation tank thereof. BACKGROUND

[0002] The aquaculture tail water contains sludge, nitrogen, phosphorus, antibiotics and other pollution components, and cannot meet the discharge standard, so the aquaculture tail water needs to be purified. There are various existing purification facilities, for example, the utility model patent with the application number CN202023132409.9 discloses a multi-stage ecological treatment device for aquaculture tail water, which firstly performs preliminary filtration and bottom sinking on the tail water by setting a microfiltration assembly, performs preliminary purification on the tail water by setting a biological purification assembly, further purifies and disinfects the tail water by setting a wetland clean water assembly, filters and disinfects the tail water by setting a disinfection assembly, and finally re- introduces the tail water in the aquaculture pond into the microfiltration assembly through the water circulation assembly to realize the recycling use of the aquaculture water. Although the microfiltration assembly can filter out the sludge, it cannot recycle the filtered sludge in time, and the microfiltration assembly is easy to be blocked due to the high content of sludge in the aquaculture tail water. SUMMARY

[0003] The utility model solves the technical problem of providing an ecological treatment system for aquaculture tail water and a vertical flow sedimentation tank, which can separate the sludge in time.

[0004] To solve the above problems, the utility model adopts the technical scheme of a vertical flow sedimentation tank, which comprises a tank body, a water inlet channel and a plurality of sedimentation cavities arranged on both sides of the water inlet channel are arranged in the tank body, a vertical flow pipe is arranged in each sedimentation cavity, the upper end of the vertical flow pipe is higher than the liquid level of the sedimentation cavity, the water inlet channel is connected with the vertical flow pipe through a water delivery pipe, and a sludge discharge mechanism is arranged at the bottom of the sedimentation cavity.

[0005] Further, the sludge discharge mechanism comprises a sludge discharge pipe and a sludge discharge channel, one end of the sludge discharge pipe is connected with the bottom of the sedimentation cavity, the other end of the sludge discharge pipe is connected with the sludge discharge channel, and a sludge discharge pump is arranged in the sludge discharge channel.

[0006] Further, a horizontal sealing plate is arranged in the sludge discharge channel, and the sludge discharge pump is located below the sealing plate.

[0007] Further, the sludge discharge pump is connected with a sludge storage tank.

[0008] Further, the water outlet of the water delivery pipe is located inside the vertical flow pipe, and the water outlet of the water delivery pipe faces upward.

[0009] An ecological treatment system for aquaculture tail water comprises, in sequence, a sedimentation tank, a biochemical treatment tank, an aeration tank and an ecological purification tank, the biochemical treatment tank is provided with fillers, the aeration tank is provided with an aeration mechanism, and the ecological purification tank is provided with plants, the sedimentation tank is a vertical flow sedimentation tank, and the overflow ditch is communicated with the biochemical treatment tank.

[0010] Further, the biochemical treatment tank comprises a first biochemical tank and a second biochemical tank, the first biochemical tank is communicated with the second biochemical tank through a first filter dam, the second biochemical tank is communicated with the aeration tank through a second filter dam, and the aeration tank is communicated with the ecological purification tank through a third filter dam.

[0011] Further, the ecological purification tank is provided with a floating planting bed, and the plants are planted in the floating planting bed.

[0012] Further, the inner cavity of the aeration tank is divided into curved water flow channels by a plurality of vertical partition plates.

[0013] Further, the front of the first filter dam, the second filter dam and the third filter dam is provided with a pump pit, and the bottom wall of the first biochemical tank, the second biochemical tank and the aeration tank is inclined downward toward the pump pit.

[0014] The vertical flow sedimentation tank can remove most of the sludge in the aquaculture tail water, the sludge is deposited at the bottom of the sedimentation cavity, and the problem of blockage does not occur, the sludge is discharged in time through the sludge discharge mechanism, only a small amount of sludge enters the lower treatment facility, and the lower treatment facility can be prevented from being blocked. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a top view schematic diagram of the vertical flow sedimentation tank of the utility model;

[0016] Figure 2 is Figure 1 a sectional view schematic diagram of A-A in the utility model;

[0017] Figure 3 is a top view schematic diagram of the ecological treatment system for aquaculture tail water of the utility model;

[0018] Fig. 1 is a top view schematic diagram of the ecological treatment system for aquaculture tail water of the utility model; Fig. 2 is a sectional view schematic diagram of B-B in Fig. 1; Fig. 3 is a sectional view schematic diagram of C-C in Fig. 1; Fig. 4 is a sectional view schematic diagram of D-D in Fig. 1; Fig. 5 is a sectional view schematic diagram of E-E in Fig. 1; Fig. 6 is a sectional view schematic diagram of F-F in Fig. 1; Fig. 7 is a sectional view schematic diagram of G-G in Fig. 1; Fig. 8 is a sectional view schematic diagram of H-H in Fig. 1; Fig. 9 is a sectional view schematic diagram of I-I in Fig. 1; Fig. 10 is a sectional view schematic diagram of J-J in Fig. 1; Fig. 11 is a sectional view schematic diagram of K-K in Fig. 1; Fig. 12 is a sectional view schematic diagram of L-L in Fig. 1; Fig. 13 is a sectional view schematic diagram of M-M in Fig. 1; Fig. 14 is a sectional view schematic diagram of N-N in Fig. 1; Fig. 15 is a sectional view schematic diagram of O-O in Fig. 1; Fig. 16 is a sectional view schematic diagram of P-P in Fig. 1; Fig. 17 is a sectional view schematic diagram of Q-Q in Fig. 1; Fig. 18 is a sectional view schematic diagram of R-R in Fig. 1; Fig. 19 is a sectional view schematic diagram of S-S in Fig. 1; Fig. 20 is a sectional view schematic diagram of T-T in Fig. 1; Fig. 21 is a sectional view schematic diagram of U-U in Fig. 1; Fig. 22 is a sectional view schematic diagram of V-V in Fig. 1; Fig. 23 is a sectional view schematic diagram of W-W in Fig. 1; Fig. 24 is a sectional view schematic diagram of X-X in Fig. 1; Fig. 25 is a sectional view schematic diagram of Y-Y in Fig. 1; Fig. 26 is a sectional view schematic diagram of Z-Z in Fig. 1; Fig. 27 is a sectional view schematic diagram of AA-AA in Fig. 1; Fig. 28 is a sectional view schematic diagram of BB-BB in Fig. 1; Fig. 29 is a sectional view schematic diagram of CC-CC in Fig. 1; Fig. 30 is a sectional view schematic diagram of DD-DD in Fig. 1; Fig. 31 is a sectional view schematic diagram of EE-EE in Fig. 1; Fig. 32 is a sectional view schematic diagram of FF-FF in Fig. 1; Fig. 33 is a sectional view schematic diagram of GG-GG in Fig. 1; Fig. 34 is a sectional view schematic diagram of HH-HH in Fig. 1; Fig. 35 is a sectional view schematic diagram of II-II in Fig. 1; Fig. 36 is a sectional view schematic diagram of JJ-JJ in Fig. 1; Fig. 37 is a sectional view schematic diagram of KK-KK in Fig. 1; Fig. 38 is a sectional view schematic diagram of LL-LL in Fig. 1; Fig. 39 is a sectional view schematic diagram of MM-MM in Fig. 1; Fig. 40 is a sectional view schematic diagram of NN-NN in Fig. 1; Fig. 41 is a sectional view schematic diagram of OO-OO in Fig. 1; Fig. 42 is a sectional view schematic diagram of PP-PP in Fig. 1; Fig. 43 is a sectional view schematic diagram of QQ-QQ in Fig. 1; Fig. 44 is a sectional view schematic diagram of RR-RR in Fig. 1; Fig. 45 is a sectional view schematic diagram of SS-SS in Fig. 1; Fig. 46 is a sectional view schematic diagram of TT-TT in Fig. 1; Fig. 47 is a sectional view schematic diagram of UU-UU in Fig. 1; Fig. 48 is a sectional view schematic diagram of VV-VV in Fig. 1; Fig. 49 is a sectional view schematic diagram of WW-WW in Fig. 1; Fig. 50 is a sectional view schematic diagram of XX-XX in Fig. 1; Fig. 51 is a sectional view schematic diagram of YY-YY in Fig. 1; Fig. 52 is a sectional view schematic diagram of ZZ-ZZ in Fig. 1; Fig. 53 is a sectional view schematic diagram of AA-AA in Fig. 1; Fig. 54 is a sectional view schematic diagram of BB-BB in Fig. 1; Fig. 55 is a sectional view schematic diagram of CC-CC in Fig. 1; Fig. 56 is a sectional view schematic diagram of DD-DD in Fig. 1; Fig. 57 is a sectional view schematic diagram of EE-EE in Fig. 1; Fig. 58 is a sectional view schematic diagram of FF-FF in Fig. 1; Fig. 59 is a sectional view schematic diagram of GG-GG in Fig. 1; Fig. 60 is a sectional view schematic diagram of HH-HH in Fig. 1; Fig. 61 is a sectional view schematic diagram of II-II in Fig. 1; Fig. 62 is a sectional view schematic diagram of JJ-JJ in Fig. 1; Fig. 63 is a sectional view schematic diagram of KK-KK in Fig. 1; Fig. 64 is a sectional view schematic diagram of LL-LL in Fig. 1; Fig. 65 is a sectional view schematic diagram of MM-MM in Fig. 1; Fig. 66 is a sectional view schematic diagram of NN-NN in Fig. 1; Fig. 67 is a sectional view schematic diagram of OO-OO in Fig. 1; Fig. 68 is a sectional view schematic diagram of PP-PP in Fig. 1; Fig. 69 is a sectional view schematic diagram of QQ-QQ in Fig. 1; Fig. 70 is a sectional view schematic diagram of RR-RR in Fig. 1; Fig. 71 is a sectional view schematic diagram of SS-SS in Fig. 1; Fig. 72 is a sectional view schematic diagram of TT-TT in Fig. 1; Fig. 73 is a sectional view schematic diagram of UU-UU in Fig. 1; Fig. 74 is a sectional view schematic diagram of VV-VV in Fig. 1; Fig. 75 is a sectional view schematic diagram of WW-WW in Fig. 1; Fig. 76 is a sectional view schematic diagram of XX-XX in Fig. 1; Fig. 77 is a sectional view schematic diagram of YY-YY in Fig. 1; Fig. 78 is a Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] The vertical flow sedimentation tank of this utility model, such as Figure 1 and Figure 2 As shown, the system includes a rectangular pool body 1. Inside the pool body 1 are an inlet channel 2 and multiple sedimentation chambers 3 located on either side of the inlet channel 2. The inlet channel 2 is located at the top of the pool body 1 and can be horizontal or inclined. One end of the inlet channel 2 is connected to an aquaculture pond to transport aquaculture wastewater into the pool body 1. The sedimentation chamber 3 has a circular horizontal cross-section, with its bottom designed as a tapered shape decreasing inwards to promote sludge sedimentation. Each sedimentation chamber 3 contains a vertical flow pipe 4, which is a circular metal or plastic pipe. During installation, multiple horizontal support rods can be installed on the inner wall of the sedimentation chamber 3. These support rods can be made of angle steel, channel steel, or other profiles. The flow pipe 4 is mounted on the support rods, fixing it at the center of the sedimentation chamber 3. The inlet channel 2 is connected to the vertical flow pipe 4 via the water delivery pipe 5. The upper end of the vertical flow pipe 4 is higher than the liquid level in the sedimentation chamber 3, ensuring that the aquaculture wastewater entering the vertical flow pipe 4 can only enter the sedimentation chamber 3 from the lower end of the vertical flow pipe 4, and not from the upper end. A sludge removal mechanism is installed at the bottom of the sedimentation chamber 3 to promptly remove sludge. An overflow weir 6 is installed at the top of each sedimentation chamber 3. The overflow weir 6 is annular and surrounds the sedimentation chamber 3, allowing the wastewater in the sedimentation chamber 3 to overflow into the overflow weir 6. The overflow weir 6 is connected to an overflow ditch 8 via a connecting pipe 7 located at the bottom of the overflow weir 6. The overflow ditch 8 is used to transport the wastewater to the next treatment facility.

[0021] There are multiple sedimentation chambers 3 located on both sides of the inlet channel 2. Multiple sedimentation chambers 3 can operate simultaneously to improve sedimentation efficiency. There can be two overflow channels 8, also located on both sides of the inlet channel 2, with the sedimentation chambers 3 located between the overflow channels 8 and the inlet channel 2, to facilitate the collection of the tailwater overflowing from the sedimentation chambers 3 on both sides of the inlet channel 2.

[0022] In this invention, aquaculture wastewater flows along the inlet channel 2. Upon reaching the tank body 1, the wastewater flows through the various water supply pipes 5 into the vertical flow pipes 4 of each sedimentation chamber 3. Because the upper end of the vertical flow pipe 4 is higher than the liquid level in the sedimentation chamber 3, the wastewater in the vertical flow pipe 4 can only flow downwards and enters the sedimentation chamber 3 from the lower end of the vertical flow pipe 4. Solid impurities such as sludge in the wastewater gradually flow downwards, while the wastewater gradually flows upwards to the upper part of the sedimentation chamber 3 and overflows into the overflow weir 6. The wastewater in the overflow weir 6 then flows into the overflow ditch 8 through the connecting pipe 7, and is transported to the next treatment unit by the overflow ditch 8. The sludge at the bottom of the sedimentation chamber 3 is discharged through the sludge discharge mechanism.

[0023] The vertical flow sedimentation tank can effectively remove most sludge and timely discharge the sludge, and can prevent the sludge from blocking the treatment facilities.

[0024] The sludge discharge mechanism comprises a sludge discharge pipe 9 and a sludge discharge groove 10, one end of the sludge discharge pipe 9 is connected with the bottom of the sedimentation cavity 3, the other end of the sludge discharge pipe 9 is connected with the sludge discharge groove 10, and a sludge discharge pump 11 is arranged in the sludge discharge groove 10.

[0025] In order to prevent foreign matters outside from falling into the sludge discharge groove 10, a horizontal sealing plate 12 is arranged in the sludge discharge groove 10, and the sludge discharge pump 11 is located below the sealing plate 12.

[0026] The sludge discharge pump 11 is connected with a sludge storage tank 13, and after the sludge is conveyed into the sludge storage tank 13, the sludge can be dried for recycling.

[0027] In the utility model, the water outlet of the water delivery pipe 5 is located inside the vertical flow pipe 4, and the water outlet of the water delivery pipe 5 faces upwards.

[0028] The water outlet of the water delivery pipe 5 is located inside the vertical flow pipe 4, and the water outlet of the water delivery pipe 5 faces upwards. Figure 3 The water outlet of the water delivery pipe 5 is located inside the vertical flow pipe 4, and the water outlet of the water delivery pipe 5 faces upwards. Figure 1 And Figure 2 The sludge discharge groove 10 is communicated with the biochemical treatment tank 20.

[0029] The sludge discharge groove 10 is communicated with the biochemical treatment tank 20. The sludge discharge groove 10 is communicated with the biochemical treatment tank 20.

[0030] The biochemical treatment tank 20 comprises a first biochemical tank 22 and a second biochemical tank 23, and the first biochemical tank 22 and the second biochemical tank 23 are both provided with fillers 21. After the vertical-flow sedimentation tank treatment, a small amount of sludge is left in the tail water, and a certain amount of sludge is also produced in the biochemical treatment. In order to further remove the sludge, the first biochemical tank 22 is communicated with the second biochemical tank 23 through a first filter dam 24; the second biochemical tank 23 is communicated with an aeration tank 30 through a second filter dam 25, and the aeration tank 30 is communicated with an ecological purification tank 40 through a third filter dam 32. The first filter dam 24, the second filter dam 25 and the third filter dam 32 can filter the sludge left in the tail water, reduce the content of suspended solids in the tail water, and thus reduce the turbidity. The main body of the first filter dam 24, the second filter dam 25 and the third filter dam 32 can be gravel with a diameter of 10mm to 20mm, and a support wall can be built around the gravel, and a plurality of water passing holes are arranged on the support wall. The gravel can also be loaded into a net box.

[0031] The ecological purification tank 40 is provided with a floating planting bed 42, which can float on the liquid surface, automatically adapt to the change of the liquid level, and adopt various existing planting beds. Plants 41 are planted in the floating planting bed 42.

[0032] The inner cavity of the aeration tank 30 is divided into curved water flow channels by a plurality of vertical partitions 33, which can prolong the flow time of the tail water in the aeration tank 30 and improve the effect of aeration and oxygenation.

[0033] In order to facilitate the collection and discharge of the filtered sludge, pump pits 50 are arranged in front of the first filter dam 24, the second filter dam 25 and the third filter dam 32, and the bottom walls of the first biochemical tank 22, the second biochemical tank 23 and the aeration tank 30 are all inclined downward toward the pump pits 50. The sludge at the bottom of the first biochemical tank 22, the second biochemical tank 23 and the aeration tank 30 can gradually move toward the pump pits 50 along the inclined bottom walls, and the part of the sludge intercepted by the first filter dam 24, the second filter dam 25 and the third filter dam 32 will also be deposited into the pump pits 50, so that the sludge can be gathered. A sludge pump can be installed in the pump pit 50 to discharge the sludge regularly.

[0034] The above is only a preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vertical flow sedimentation basin comprising a basin body (1), characterized in that: The pool body (1) is provided with an inlet channel (2) and a plurality of sedimentation chambers (3) arranged on both sides of the inlet channel (2), each of the sedimentation chambers (3) is provided with a vertical upflow pipe (4), the upper end of the upflow pipe (4) is higher than the liquid level of the sedimentation chamber (3), the inlet channel (2) is connected with the upflow pipe (4) through a water delivery pipe (5), and the bottom of the sedimentation chamber (3) is provided with a sludge discharge mechanism; the upper part of each of the sedimentation chambers (3) is provided with an overflow weir (6), and the overflow weir (6) is connected with an overflow ditch (8) through a communication pipe (7).

2. The vertical flow sedimentation basin of claim 1, wherein: The sludge discharge mechanism comprises a sludge discharge pipe (9) and a sludge discharge ditch (10), one end of the sludge discharge pipe (9) is connected with the bottom of the sedimentation chamber (3), the other end of the sludge discharge pipe (9) is connected with the sludge discharge ditch (10), and the sludge discharge ditch (10) is provided with a sludge discharge pump (11).

3. The vertical flow sedimentation basin of claim 2, wherein: The sludge discharge ditch (10) is provided with a horizontal sealing plate (12), and the sludge discharge pump (11) is located below the sealing plate (12).

4. The vertical flow sedimentation basin of claim 2, wherein: The sludge discharge pump (11) is connected with a sludge storage tank (13).

5. The vertical flow sedimentation basin of claim 1 wherein: The water outlet of the water delivery pipe (5) is located inside the upflow pipe (4), and the water outlet of the water delivery pipe (5) faces upwards.

6. An ecological treatment system for aquaculture tail water, comprising a sedimentation tank, a biochemical treatment tank (20), an aeration tank (30) and an ecological purification tank (40) connected in sequence, a filler (21) is arranged in the biochemical treatment tank (20), an aeration mechanism (31) is arranged in the aeration tank (30), and plants (41) are arranged in the ecological purification tank (40), characterized in that: The sedimentation tank is the upflow sedimentation tank of claim 1, and the overflow ditch (8) is communicated with a biochemical treatment tank (20).

7. An aquaculture effluent ecological treatment system as claimed in claim 6, characterised in that: The biochemical treatment tank (20) comprises a first biochemical tank (22) and a second biochemical tank (23), the first biochemical tank (22) is communicated with the second biochemical tank (23) through a first filter dam (24), the second biochemical tank (23) is communicated with an aeration tank (30) through a second filter dam (25), and the aeration tank (30) is communicated with an ecological purification tank (40) through a third filter dam (32).

8. An aquaculture effluent ecological treatment system as claimed in claim 6, characterised in that: The ecological purification tank (40) is provided with a floating planting bed (42), and plants (41) are planted in the floating planting bed (42).

9. An aquaculture effluent ecological treatment system as claimed in claim 6, characterised in that: The inner cavity of the aeration tank (30) is divided into curved water flow channels by a plurality of vertical partition plates (33).

10. The recirculating aquaculture tailwater ecological treatment system of claim 7, wherein: Front parts of the first filter dam (24), the second filter dam (25) and the third filter dam (32) are provided with pump pits (50), and bottom walls of the first biochemical tank (22), the second biochemical tank (23) and the aeration tank (30) are all inclined downward towards the pump pits (50).

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