Hydrolysis acidification pool

Abstract

The utility model discloses a hydrolysis acidification pool, belongs to the field of sewage treatment, and solves the problems that the quantity of microorganisms in the existing hydrolysis acidification pool is small, and the sludge content of effluent is high. The device comprises a plurality of hydrolytic acidification areas and settling areas, the hydrolytic acidification areas are sequentially connected in series, a water inlet partition wall and a water outlet partition wall are arranged on the two sides of each hydrolytic acidification area respectively, the upper end of each water inlet partition wall is connected with the top of the corresponding hydrolytic acidification area, the lower end of each water outlet partition wall is open, the lower end of each water outlet partition wall is connected with the bottom of the corresponding hydrolytic acidification area, and hydrolytic acidification filler is arranged between each water inlet partition wall and the corresponding water outlet partition wall; the first hydrolytic acidification area is connected with a water inlet pipe; the last hydrolytic acidification area is connected with a settling area through a rectification channel, and the settling area is connected with a water outlet pipe. The hydrolytic acidification filler is arranged in the hydrolytic acidification area, so that the number of microorganisms is increased, and the hydrolytic acidification efficiency is improved; the settling zone is arranged at the rear end of the hydrolytic acidification zone, so that the problem of high silt content of effluent is solved, and the quality of the effluent is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of sewage treatment, and particularly relates to a hydrolysis acidification tank. BACKGROUND

[0002] The hydrolysis acidification tank is a sewage pretreatment facility, can be used for treating industrial wastewater and mixed sewage, controls anaerobic biological reaction in the hydrolysis and acidification stages, utilizes the action of microorganisms in the hydrolysis and acidification stages, hydrolyzes suspended organic solids and difficult biodegradable macromolecular substances in sewage into soluble organic matter and easily biodegradable small molecular substances, and the small molecular organic matter is converted into volatile fatty acids under the action of acidification bacteria, so that the biodegradability of the sewage can be improved, and the efficiency of removing pollutants from the sewage can be improved.

[0003] The current hydrolysis acidification tank mainly has the following problems: the number of microorganisms in the tank is small, and the treatment efficiency is low; the sludge discharge pipe in the tank is located at the bottom of the tank body and is prone to blockage, and the sludge discharge pipe is controlled by electricity and is slow to execute; and the effluent contains a high amount of sludge, which affects the subsequent sewage treatment section. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a hydrolysis acidification tank to solve the problems of the current hydrolysis acidification tank, i.e., the number of microorganisms in the tank is small and the effluent contains a high amount of sludge.

[0005] The technical scheme of the utility model is as follows: a hydrolysis acidification tank comprises multiple hydrolysis acidification zones and a sedimentation zone; the multiple hydrolysis acidification zones are connected in series; water inlet partition walls and water outlet partition walls are respectively arranged on the two sides of each hydrolysis acidification zone; the upper end of each water inlet partition wall is connected to the top of the corresponding hydrolysis acidification zone, and the lower end is open; the lower end of each water outlet partition wall is connected to the bottom of the corresponding hydrolysis acidification zone, and the upper end is open; hydrolysis acidification fillers are arranged between the water inlet partition walls and the water outlet partition walls; a water inlet pipe is connected to the first hydrolysis acidification zone; the last hydrolysis acidification zone is connected to the sedimentation zone through a rectifying channel; and a water outlet pipe is connected to the sedimentation zone.

[0006] As a further improvement of the utility model, a first sludge discharge pipe is arranged in each hydrolysis acidification zone, the first sludge discharge pipe is located below the hydrolysis acidification fillers, the first sludge discharge pipe is a lower-open perforated sludge discharge pipe, each first sludge discharge pipe is connected to a first sludge discharge main pipe, and a sludge discharge pump is arranged on the first sludge discharge main pipe.

[0007] As a further improvement of the utility model, the bottom of each hydrolysis acidification zone is in the shape of a bucket.

[0008] As a further improvement of the utility model, an inclined pipe is arranged in the sedimentation zone, finger-shaped water outlet grooves are arranged above the inclined pipe, each finger-shaped water outlet groove is connected to a water outlet channel, and the water outlet channel is connected to the water outlet pipe.

[0009] As a further improvement of the utility model, triangular water outlet weirs are arranged on the two sides of each finger-shaped water outlet groove.

[0010] As a further improvement of the utility model, the inclined pipe bottom is equipped with a plurality of sludge discharge hoppers, the sludge discharge hoppers are equipped with second sludge discharge pipes, the second sludge discharge pipes are connected to a second sludge discharge main pipe, and the second sludge discharge main pipe is equipped with a sludge discharge pump.

[0011] As a further improvement of the utility model, the last hydrolytic acidification zone is connected with the rectifying channel overflow through a water outlet partition wall thereof; the rectifying channel is connected with the sedimentation zone through a perforated flower wall, and the perforated position of the perforated flower wall is lower than the inclined pipe.

[0012] As a further improvement of the utility model, the rectifying channel bottom is inclined to the sedimentation zone direction, the perforated flower wall bottom is equipped with an inclined sludge discharge hole, and the sludge discharge hole lower end leads to a sludge discharge hopper.

[0013] As a further improvement of the utility model, the water inlet pipe is connected with the first hydrolytic acidification zone through a water inlet channel, and the water inlet channel is connected with the first hydrolytic acidification zone through a water inlet channel partition wall overflow.

[0014] As a further improvement of the utility model, the first sludge discharge pipe and the second sludge discharge pipe are respectively equipped with pneumatic sludge discharge valves.

[0015] The utility model has the advantages that: the utility model sets hydrolytic acidification fillers in the hydrolytic acidification zone, increases the number of microorganisms, the water flow passes through the hydrolytic acidification fillers in the upflow mode, increases the contact area of raw water and microorganisms, and improves the hydrolytic acidification efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the plane schematic diagram of the utility model;

[0017] Figure 2 It is the bottom plane schematic diagram of the utility model;

[0018] Figure 3 It is Figure 1 the A-A sectional view in the

[0019] Figure 4 It is Figure 1 the B-B sectional view in the

[0020] In the diagram: 1. Hydrolysis and acidification zone; 1-1. Hydrolysis and acidification packing; 1-2. Outlet partition wall; 1-3. Inlet partition wall; 1-4. First sludge discharge pipe; 1-5. Flow channel; 1-6. Packing support; 1-7. First sludge discharge main pipe; 2. Rectifying channel; 2-1. Perforated flower wall; 2-2. Sludge discharge hole; 3. Sedimentation zone; 3-2. Finger-shaped outlet channel; 3-3. Triangular outlet weir; 3-4. Second sludge discharge pipe; 3-5. Trumpet mouth; 3-6. Sludge discharge hopper; 3-7. Inclined pipe; 3-8. Second sludge discharge main pipe; 4. Pneumatic sludge discharge valve; 5. Sludge discharge pump; 6. Inlet pipe; 7. Outlet channel; 8. Outlet pipe; 9. Inlet channel; 9-1. Inlet channel partition wall. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1-4 As shown, a hydrolysis acidification tank includes multiple hydrolysis acidification zones 1 and a sedimentation zone 3. The multiple hydrolysis acidification zones 1 are connected in series. Each hydrolysis acidification zone 1 has an inlet partition wall 1-3 and an outlet partition wall 1-2 on both sides. The upper end of the inlet partition wall 1-3 is connected to the top of the hydrolysis acidification zone 1, and the lower end is open. The lower end of the outlet partition wall 1-2 is connected to the bottom of the hydrolysis acidification zone 1, and the upper end is open. A packing support 1-6 is provided between the inlet partition wall 1-3 and the outlet partition wall 1-2. Hydrolysis acidification packing 1-1 is provided on the packing support 1-6. The first hydrolysis acidification zone 1 is connected to an inlet pipe 6. The last hydrolysis acidification zone 1 is connected to the sedimentation zone 3 through a rectifier channel 2. The sedimentation zone 3 is connected to an outlet pipe 8.

[0023] Each hydrolysis acidification zone 1 is equipped with a first sludge discharge pipe 1-4, which runs across the entire hydrolysis acidification zone 1. The first sludge discharge pipe 1-4 is located below the hydrolysis acidification packing 1-1. The first sludge discharge pipe 1-4 is a bottom-opening perforated sludge discharge pipe. Each first sludge discharge pipe 1-4 is connected to the first sludge discharge main pipe 1-7. The first sludge discharge main pipe 1-7 is equipped with a sludge discharge pump 5.

[0024] The bottom of the hydrolysis acidification zone 1 is funnel-shaped, forming a sludge collection area. The lower end of the inlet baffle 1-3 is bent, forming an inclined flow channel 1-5. The lower end of the outlet baffle 1-2 forms an angle with the bottom of the hydrolysis acidification zone 1, with an angle of not less than 45°.

[0025] The first sludge discharge pipe 1-4 is installed at a certain height on the inlet partition wall 1-3 and the outlet partition wall 1-2, at a certain distance from the bottom, which reduces the blockage of the sludge discharge pipe and ensures the smooth discharge of sludge from the hydrolysis acidification zone.

[0026] The sedimentation zone 3 is equipped with inclined tubes 3-7, and finger-shaped water outlet channels 3-2 are provided above the inclined tubes 3-7. Each finger-shaped water outlet channel 3-2 is connected to the water outlet channel 7, and the water outlet channel 7 is connected to the water outlet pipe 8.

[0027] The two sides of the finger-shaped water outlet groove 3-2 are provided with triangular water outlet weirs 3-3 to ensure uniform water outlet of the sedimentation zone 3.

[0028] The bottom of the inclined pipe 3-7 is provided with a plurality of sludge discharge hoppers 3-6, the sludge discharge hoppers 3-6 are provided with second sludge discharge pipes 3-4, the second sludge discharge pipes 3-4 are connected to a second sludge discharge main pipe 3-8, and the second sludge discharge main pipe 3-8 is provided with a sludge discharge pump 5. The inclination angle between the side wall and the bottom of the sludge discharge hopper 3-6 is not less than 45°. The sludge discharge hoppers 3-6 collect sludge and then discharge the sludge through the second sludge discharge main pipe 3-8, so that the sludge in the sedimentation zone is smoothly discharged.

[0029] The lower end of the second sludge discharge pipe 3-4 is provided with a trumpet mouth 3-5 to facilitate sludge discharge.

[0030] The last hydrolytic acidification zone 1 is connected to the flow overflow of the flow regulation channel 2 through the water outlet partition wall 1-2 thereof; the flow regulation channel 2 is connected to the sedimentation zone 3 through the perforated flower wall 2-1, so that the sedimentation zone 3 uniformly receives water, the sedimentation effect is ensured, and the perforation position of the perforated flower wall 2-1 is lower than that of the inclined pipe 3-7.

[0031] The bottom of the flow regulation channel 2 is inclined to the sedimentation zone 3, the bottom of the perforated flower wall 2-1 is provided with an inclined sludge discharge hole 2-2, and the lower end of the sludge discharge hole 2-2 leads to the sludge discharge hopper 3-6.

[0032] The inlet pipe 6 is connected to the first hydrolytic acidification zone 1 through the inlet channel 9, and the inlet channel 9 is connected to the first hydrolytic acidification zone 1 through the inlet channel partition wall 9-1.

[0033] The first sludge discharge pipe 1-4 and the second sludge discharge pipe 3-4 are respectively provided with pneumatic sludge discharge valves 4. Each first sludge discharge pipe 1-4 and second sludge discharge pipe 3-4 is controlled by a pneumatic sludge discharge valve 4, which improves the sludge discharge efficiency and ensures controllable sludge discharge.

[0034] The raw water enters the inlet channel 9 through the inlet pipe 6, then overflows through the inlet channel partition wall 9-1, enters the first hydrolytic acidification zone 1 through the inclined overflow channel 1-5 at the bottom of the inlet partition wall 1-3 of the first hydrolytic acidification zone 1, and flows from bottom to top, is subjected to hydrolytic acidification by the hydrolytic acidification filler 1-1, and then overflows through the water outlet partition wall 1-2 and enters the next hydrolytic acidification zone 1. After being treated by each hydrolytic acidification zone 1, the water outlet of the last hydrolytic acidification zone 1 flows into the flow regulation channel 2, and then enters the sedimentation zone 3 through the perforated flower wall 2-1. The water after being deposited by the inclined pipe 3-7 enters the finger-shaped water outlet groove 3-2 through the triangular water outlet weir 3-3, and the water in each finger-shaped water outlet groove 3-2 flows into the outlet channel 7 and then flows out through the outlet pipe 8.

[0035] The sludge in the hydrolytic acidification zone 1 is precipitated in the hopper bottom of the hydrolytic acidification zone 1. The sludge in the sedimentation zone 3 is precipitated into the sludge discharge hopper 3-6, and the sludge in the sludge discharge hopper 3-6 is sucked into the second sludge discharge pipe 3-4 through the trumpet 3-5, and every two sludge discharge hoppers 3-6 share one second sludge discharge pipe 3-4. The sludge in the rectifying channel 2 flows into the sludge discharge hopper 3-6 through the sludge discharge hole 2-2. The sludge in the hydrolytic acidification zone 1 is discharged in turn through the first sludge discharge pipe 1-4 and the first sludge discharge main pipe 1-7, and the sludge in the sludge discharge hopper 3-6 is discharged in turn through the second sludge discharge pipe 3-4 and the second sludge discharge main pipe 3-8. Each pneumatic sludge discharge valve 4 can be controlled independently.

[0036] The hydrolytic acidification zone 1 increases the number of microorganisms by using the hydrolytic acidification filler 1-1, improves the hydrolytic acidification capacity of raw water, and improves the biodegradability of raw water. After hydrolytic acidification, the sewage is precipitated through the inclined pipe 3-7 for sludge-water separation, improving the water quality and ensuring the normal operation of the subsequent sewage treatment facilities.

Claims

1. A hydrolysis acidification tank, characterized by: The application relates to a hydrolytic acidification and sedimentation device.

2. The hydrolysis acidification tank according to claim 1, characterized in that: Each hydrolytic acidification zone (1) is provided with a first sludge discharge pipe (1-4) which is located below the hydrolytic acidification filler (1-1) and adopts a lower-open type perforated sludge discharge pipe; the first sludge discharge pipes (1-4) are connected to a first sludge discharge main pipe (1-7) which is provided with a sludge discharge pump (5).

3. The hydrolysis acidification tank according to claim 2, characterized in that: The bottom of the hydrolytic acidification zone (1) is in the shape of a bucket.

4. The hydrolysis acidification tank according to claim 2 or 3, characterized in that: The sedimentation zone (3) is provided with an inclined pipe (3-7) and a finger-shaped water outlet groove (3-2) which is located above the inclined pipe (3-7); the finger-shaped water outlet grooves (3-2) are connected to a water outlet channel (7) which is connected to a water outlet pipe (8).

5. The hydrolysis acidification tank according to claim 4, characterized in that: The finger-shaped water outlet grooves (3-2) are provided with triangular water outlet weirs (3-3) on the two sides.

6. The hydrolysis acidification tank according to claim 5, characterized in that: The bottom of the inclined pipe (3-7) is provided with a plurality of sludge discharge hoppers (3-6) which are provided with second sludge discharge pipes (3-4); the second sludge discharge pipes (3-4) are connected to a second sludge discharge main pipe (3-8) which is provided with a sludge discharge pump (5).

7. The hydrolysis acidification tank according to claim 6, characterized in that: The last hydrolytic acidification zone (1) is connected to the overflow of the rectifying channel (2) through the water outlet partition wall (1-2) thereof; the rectifying channel (2) is connected to the sedimentation zone (3) through a perforated flower wall (2-1) whose perforated position is lower than the inclined pipe (3-7).

8. The hydrolysis acidification tank according to claim 7, characterized in that: The bottom of the rectifying channel (2) is inclined towards the sedimentation zone (3); the bottom of the perforated flower wall (2-1) is provided with an inclined sludge discharge hole (2-2) which is connected to the sludge discharge hoppers (3-6).

9. The hydrolysis acidification tank according to claim 8, characterized in that: The water inlet pipe (6) is connected to the first hydrolytic acidification zone (1) through a water inlet channel (9) which is connected to the first hydrolytic acidification zone (1) through a water inlet channel partition wall (9-1).

10. The hydrolysis acidification tank according to claim 9, characterized in that: The first sludge discharge pipes (1-4) and the second sludge discharge pipes (3-4) are respectively provided with pneumatic sludge discharge valves (4).

Images