CN114933392A

CN114933392A - Rural domestic sewage treatment equipment

Info

Publication number: CN114933392A
Application number: CN202210532412.4A
Authority: CN
Inventors: 王贺; 付法平; 陈勇; 郑兴
Original assignee: Zhejiang Lanya Environmental Protection Technology Co ltd
Current assignee: Zhejiang Lanya Environmental Protection Technology Co ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-08-23
Anticipated expiration: 2042-05-10
Also published as: CN114933392B

Abstract

The invention discloses rural domestic sewage treatment equipment in the technical field of sewage treatment, which comprises a pretreatment tank, wherein a first filter tank, a second filter tank and an aeration settling tank are arranged in the pretreatment tank, a coarse grid is arranged in the first filter tank, a fine grid is arranged in the second filter tank, a first aeration pipe is arranged on the inner wall of the aeration settling tank, a sand settling plate is arranged at the bottom of the aeration settling tank, and a sand-stone separator is arranged at the bottom of the sand settling plate. According to the invention, by designing the integrated sewage treatment equipment consisting of the pretreatment box, the transfer box, the biochemical treatment box and other components, the sewage can be efficiently and integrally treated, the device is convenient to install and carry, the excavation work of pit positions is reduced, and the manpower and material resources are saved.

Description

Rural domestic sewage treatment equipment

Technical Field

The invention relates to the technical field of sewage treatment, in particular to rural domestic sewage treatment equipment.

Background

Sewage treatment is a process for removing pollutants from municipal wastewater, mainly including domestic sewage and some industrial wastewater. Physical, chemical and biological processes are used to remove pollutants and produce treated wastewater (or treated wastewater) that is sufficiently safe to be released into the environment, and the by-product of wastewater treatment is a semi-solid waste or sludge, known as sewage sludge, that must be further treated to be suitable for land treatment or application to the land.

At present, the existing rural domestic sewage treatment equipment has the following defects:

1. rural sewage treatment equipment is generally composed of a plurality of groups of closed tank bodies, the closed tank body groups are large in size and independent, are buried underground deeply, need to dig a plurality of pit positions, and are troublesome to construct and install;

2. pretreatment mechanism is limited to some simple filtrations to the preliminary treatment of sewage among rural sewage treatment equipment, and the dirt is piled up very easily on the filter mechanism, and then reduces the filter effect, causes great burden to subsequent chemical treatment equipment, is unfavorable for high-efficient treatment sewage.

Therefore, those skilled in the art provide a rural domestic sewage treatment apparatus to solve the problems set forth in the above background art.

Disclosure of Invention

The invention aims to provide rural domestic sewage treatment equipment to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a rural domestic sewage treatment device comprises a pretreatment tank, wherein a first filter tank, a second filter tank and an aeration sedimentation tank are arranged in the pretreatment tank, a coarse grid is arranged in the first filter tank, a fine grid is arranged in the second filter tank, a first aeration pipe is arranged on the inner wall of the aeration sedimentation tank, a sand-settling plate is arranged at the bottom of the aeration sedimentation tank, a sand-stone separator is arranged at the bottom of the sand-settling plate, a transfer tank is arranged at the outer bottom of the pretreatment tank, a guide pipe is arranged in the transfer tank, a biochemical treatment tank is arranged at the bottom of the transfer tank, a biological reaction tank, a chemical sedimentation tank and a disinfection tank are arranged in the biochemical treatment tank, a microorganism tank is arranged in the biological reaction tank, a chemical reagent box is arranged on the inner wall of the chemical reaction tank, and a chemical precipitant box is arranged on the inner wall of the chemical sedimentation tank, the outer wall of the disinfection tank is provided with a disinfectant box, and an ultraviolet disinfection lamp is arranged between the inner walls of the disinfection tank.

As a still further scheme of the invention: the first filtering tank, the second filtering tank and the aeration settling tank are formed in the pretreatment tank through partition plates, the partition plates are welded to the inner wall of the pretreatment tank, clamping plates are clamped and pressed at the tops of the coarse grating and the fine grating, and the coarse grating is clamped and pressed in the first filtering tank through the clamping plates.

As a still further scheme of the invention: the fine grid passes through the strap clamp is pressed in the second filtering tank, the first aeration pipe runs through the aeration settling tank and is fixed, the sand settling plate is obliquely fixed at the bottom in the aeration settling tank, the sand-stone separator is tightly attached to the bottom of the sand settling plate, and the bottom of the sand settling plate is provided with an electromagnetic valve embedded in the inner wall of the pretreatment tank.

As a still further scheme of the invention: the bottom of the sand-stone separator is provided with an overflow area formed in the inner wall of the pretreatment box, the outer bottom of the sand-stone separator is provided with a sand discharge pipe, the transfer box is welded with the pretreatment box, the guide pipe is connected with the electromagnetic valve, the guide pipe is embedded in the transfer box, and one side of the guide pipe is provided with an aerator fixed on the inner wall of the transfer box.

As a still further scheme of the invention: the output end of the aerator is connected with a first air feed pipe and a second air feed pipe, the first air feed pipe is communicated with the first aeration pipe, the biochemical treatment box is welded with the transfer box, and the biological reaction tank, the chemical sedimentation tank and the disinfection tank are all formed in the biochemical treatment box.

As a still further scheme of the invention: the bottom of the flow guide pipe is communicated with the biological reaction tank, the microorganism box penetrates and is fixed on the inner wall of the biological reaction tank, an oxygen pump penetrating through the inner wall of the biological reaction tank is arranged at the bottom of the microorganism box, and the chemical reagent kit is communicated with the inside of the chemical reaction tank.

As a still further scheme of the invention: the chemical precipitator box is communicated with the inner wall of the chemical precipitation tank, the disinfectant box is communicated with the inner part of the disinfection tank, the ultraviolet disinfection lamp is clamped and pressed between the inner walls of the disinfection tank, the biological reaction tank and the bottom of the chemical precipitation tank are respectively clamped and pressed with a mud pumping plate, and the outside of the mud pumping plate is connected with a mud pumping pump through a pipeline.

As a still further scheme of the invention: the biological reaction tank and the chemical reaction tank are respectively provided with a tail gas discharge pipe in an inserted manner, the bottom of one side wall outside the disinfection tank is provided with a discharge pipe in an inserted manner, and the top inside the biochemical treatment tank is fixedly provided with a second lifting pump group.

As a still further scheme of the invention: the outer top of the pretreatment tank is fixed with a first lifting pump group, the inner walls of the biological reaction tank and the chemical sedimentation tank are respectively fixed with a second aeration pipe, the second aeration pipe is communicated with a second air supply pipe, the outer top of the aeration sedimentation tank is fixed with a tail gas air pump, and a sewage conveying pipe is inserted into one side wall of the outer part of the pretreatment tank.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, by designing the integrated sewage treatment equipment consisting of the pretreatment box, the transfer box, the biochemical treatment box and other components, the sewage can be comprehensively and integrally treated efficiently, the device is convenient to install and carry, the work of pit excavation is reduced, and the manpower and material resources are saved;

2. according to the invention, by arranging the pretreatment tank consisting of the first filter tank, the second filter tank and the aeration sedimentation tank, the rural domestic sewage can be efficiently pretreated by utilizing components such as the coarse grating, the fine grating, the first lift pump unit, the first aeration pipe, the sand-stone separator and the like, the circulation of large-particle suspended solids and sand-stones in the sewage is reduced, and the efficient decontamination work of subsequent biochemical treatment equipment is ensured.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic perspective view of a biochemical processing chamber according to the present invention;

FIG. 3 is a schematic view of the back structure of the biochemical treatment chamber according to the present invention;

FIG. 4 is a schematic view of the connection between the thick grid and the card board.

In the figure: 1-a pretreatment tank; 2-sewage conveying pipe; 3-a first filtering tank; 4-a second filtering tank; 5-a first lift pump group; 6-a second lift pump group; 7-coarse grating; 8-fine grating; 9-a separator; 10-an aerator; 11-an aeration settling tank; 12-a first aerator pipe; 13-sand separator; 14-an overflow zone; 15-a sand discharge pipe; 16-exhaust gas extractor; 17-a draft tube; 18-a solenoid valve; 19-a biological reaction tank; 20-a microbiological box; 21-an oxygen pump; 22-a chemical reaction tank; 23-a chemical sedimentation tank; 24-a disinfection tank; 25-a discharge pipe; 26-ultraviolet disinfection lamp; 27-a chemical reactant cartridge; 28-a chemical precipitant box; 29-a disinfectant box; 30-sand settling plate; 31-a card; 32-a mud pumping plate; 33-a first air feed pipe; 34-a second air delivery pipe; 35-a mud pump; 36-a tail gas discharge pipe; 37-transfer box; 38-a second aerator pipe; 39-biochemical treatment box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, in the embodiment of the invention, a rural domestic sewage treatment device comprises a pretreatment tank 1, a first filter tank 3, a second filter tank 4 and an aeration sedimentation tank 11 are arranged in the pretreatment tank 1, a thick grating 7 is arranged in the first filter tank 3, a thin grating 8 is arranged in the second filter tank 4, a first aeration pipe 12 is arranged on the inner wall of the aeration sedimentation tank 11, a sand settling plate 30 is arranged at the bottom of the aeration sedimentation tank 11, a sand separator 13 is arranged at the bottom of the sand settling plate 30, a transit tank 37 is arranged at the outer bottom of the pretreatment tank 1, a flow guide pipe 17 is arranged in the transit tank 37, a biochemical treatment tank 39 is arranged at the bottom of the transit tank 37, a biological reaction tank 19, a chemical reaction tank 22, a chemical sedimentation tank 23 and a disinfection tank 24 are arranged in the biochemical treatment tank 39, a microorganism tank 20 is arranged in the biological reaction tank 19, a chemical reagent kit 27 is arranged on the inner wall of the chemical reaction tank 22, a chemical precipitator box 28 is arranged on the inner wall of the chemical precipitation tank 23, a disinfectant box 29 is arranged on the outer wall of the disinfection tank 24, and ultraviolet disinfection lamps 26 are arranged between the inner walls of the disinfection tank 24.

First filtering ponds 3, second filtering ponds 4 and aeration sedimentation tank 11 all form in preliminary treatment case 1 through baffle 9, baffle 9 and the welding of preliminary treatment case 1 inner wall, thick grid 7 and the equal card of thin grid 8 top press have cardboard 31, and thick grid 7 passes through cardboard 31 card and presses in first filtering ponds 3, and thick grid 7 is used for filtering the diameter and is greater than 20 mm's suspension, and thin grid 8 is used for filtering the diameter and is less than 5 mm's suspension.

The fine grid 8 is pressed in the second filtering ponds 4 through cardboard 31 card, it is fixed that first aeration pipe 12 runs through aeration settling basin 11, it is fixed in 11 bottoms in the aeration settling basin to put to one side to sink sand board 30, sand separator 13 hugs closely in the bottom of sinking sand board 30, it is provided with the electromagnetic valve 18 of inlaying in pretreatment tank 1 inner wall to sink sand board 30 bottom, sand separator 13 drives inside screw axis through outside motor and extracts the grit of subsiding, the moisture is filtered out in sand separator 13's pipe-line competition to the grit, can realize solid-liquid separation.

The bottom of the sand-stone separator 13 is provided with an overflow area 14 formed in the inner wall of the pretreatment tank 1, the outer bottom of the sand-stone separator 13 is provided with a sand discharge pipe 15, the transfer tank 37 is welded with the pretreatment tank 1, the guide pipe 17 is connected with the electromagnetic valve 18 in a valve mode, the guide pipe 17 is embedded in the transfer tank 37, one side of the guide pipe 17 is provided with an aerator 10 fixed on the inner wall of the transfer tank 37, and the outside of the overflow area 14 is provided with a recovery mechanism to send sewage into the treatment tank again.

The output end of the aerator 10 is connected with a first air feed pipe 33 and a second air feed pipe 34, the first air feed pipe 33 is communicated with the first aerator pipe 12, a biochemical treatment box 39 is welded with a transfer box 37, the biological reaction tank 19, the chemical reaction tank 22, the chemical sedimentation tank 23 and the disinfection tank 24 are all formed in the biochemical treatment box 39, and the aerator 10 is used for generating high-pressure gas and generating bubbles in sewage.

The bottom of the draft tube 17 is communicated with the biological reaction tank 19, the microorganism box 20 is fixed on the inner wall of the biological reaction tank 19 in a penetrating way, the bottom of the microorganism box 20 is provided with an oxygen pump 21 which penetrates through the inner wall of the biological reaction tank 19, the chemical kit 27 is communicated with the inside of the chemical reaction tank 22, and an acid-base neutralizer, a heavy metal reactant and the like are arranged in the chemical kit 27.

Chemical sediment box 28 and the inner wall intercommunication of chemical sedimentation tank 23, disinfectant box 29 and the inside intercommunication of disinfection tank 24, ultraviolet ray disinfection lamp 26 card is pressed between disinfection tank 24 inner wall, biological reaction tank 19 and the equal card of chemical sedimentation tank 23 bottom have a mud pumping board 32, and the mud pumping board 32 outside has mud pump 35 through the pipe connection, be in chemical sediment box 28 with flocculating agent, coagulant aid and coagulant, the inside hypochlorous acid that is of disinfectant box 29.

The inner walls of the biological reaction tank 19 and the chemical reaction tank 22 are respectively inserted with a tail gas discharge pipe 36, the bottom of one side wall outside the disinfection tank 24 is inserted with a discharge pipe 25, the top inside the biochemical treatment tank 39 is fixed with a second lifting pump group 6, when the biological reaction tank 19 carries out an anaerobic reaction, anaerobic microorganisms are added into the microorganism tank 20 and are absorbed with organic matters in sewage, when the aerobic reaction is carried out, aerobic microorganisms are added into the microorganism tank 20, meanwhile, the oxygen pump 21 supplies oxygen to the sewage, and methane is discharged from the tail gas discharge pipe 36.

The top of the pretreatment box 1 is fixed with a first lifting pump group 5, the inner walls of the biological reaction tank 19 and the chemical sedimentation tank 23 are both fixed with a second aeration pipe 38, and the second aeration pipe 38 is communicated with a second air supply pipe 34.

A working principle of rural domestic sewage treatment equipment is as follows: this device can be fixed subaerial use with the device installation when specifically using, also can install the device and use in the hole of predetermineeing, structure about this device formula as an organic whole, consequently, the hole position of excavation is less, has saved more construction work, practices thrift the cost, and after the device is fixed, with sewage pipe network intercommunication of laying in sewage delivery pipe 2 and the rural street, can realize the drainage to sewage, in addition, the device inserts external power source and controlling means, is operated by manual control. Sewage firstly enters a pretreatment tank 1, the sewage in a first filtering tank 3 is filtered by a coarse grating 7 to filter large-diameter suspended matters, a first lifting pump group 5 pumps the sewage in the first filtering tank 3 into a second filtering tank 4 to filter small-diameter suspended matters, the first lifting pump group 5 then sends the filtered sewage into an aeration settling tank 11, an aerator 10 presses air into the sewage through a first air supply pipe 33 to remove organic matters attached to the surface of the sewage, fine sand particles settle on a sand setting plate 30 at the bottom and are pumped away by a sand separator 13 through an internal spiral shaft, the sewage flows into an overflow area 14 on the pipe wall and flows back into the aeration settling tank 11 again, after sand setting is pumped out, an electromagnetic valve 18 is opened, the sewage after pretreatment enters a biochemical treatment tank 39 through a guide pipe 17 and firstly enters a biological reaction tank 19, denitrating or dephosphorizing by anaerobic or aerobic microorganisms, reducing the Biochemical Oxygen Demand (BOD), pumping sewage into a chemical reaction tank (22) by a second lifting pump set (6), neutralizing and removing heavy metals under the action of chemical reagents, pumping sewage into a chemical precipitation tank (23) by the second lifting pump set (6), adding a flocculating agent, a coagulant aid and a coagulant, condensing suspended matters in the sewage into sludge and sediment, collecting the sludge into a sludge pumping plate (32), pumping the sewage into a disinfection tank (24) by the second lifting pump set (6), killing bacteria in the sewage under the irradiation of an ultraviolet disinfection lamp (26), matching with the sterilization and deodorization of a disinfectant, further playing a disinfection role, and finally discharging the sewage reaching the standard from a discharge pipe (25).

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides a rural domestic sewage treatment equipment, includes pretreatment tank (1), its characterized in that: the pretreatment tank (1) is internally provided with a first filtering tank (3), a second filtering tank (4) and an aeration sedimentation tank (11), the first filtering tank (3) is internally provided with a coarse grid (7), the second filtering tank (4) is internally provided with a fine grid (8), the inner wall of the aeration sedimentation tank (11) is provided with a first aeration pipe (12), the bottom of the aeration sedimentation tank (11) is provided with a sand settling plate (30), the bottom of the sand settling plate (30) is provided with a sand separator (13), the outer bottom of the pretreatment tank (1) is provided with a transit tank (37), the transit tank (37) is internally provided with a flow guide pipe (17), the bottom of the transit tank (37) is provided with a biochemical treatment tank (39), the biochemical treatment tank (39) is internally provided with a biological reaction tank (19), a chemical reaction tank (22), a chemical sedimentation tank (23) and a disinfection tank (24), the biological reaction tank (19) is internally provided with a microorganism box (20), the inner wall of the chemical reaction tank (22) is provided with a chemical reagent kit (27), the inner wall of the chemical precipitation tank (23) is provided with a chemical precipitation reagent kit (28), the outer wall of the disinfection tank (24) is provided with a disinfectant kit (29), and an ultraviolet disinfection lamp (26) is arranged between the inner walls of the disinfection tank (24).

2. The rural domestic sewage treatment equipment according to claim 1, characterized in that: the first filtering tank (3), the second filtering tank (4) and the aeration settling tank (11) are formed in the pretreatment tank (1) through partition plates (9), the partition plates (9) are welded with the inner wall of the pretreatment tank (1), clamping plates (31) are clamped and pressed at the tops of the coarse grids (7) and the fine grids (8), and the coarse grids (7) are clamped and pressed in the first filtering tank (3) through the clamping plates (31).

3. The rural domestic sewage treatment equipment according to claim 2, characterized in that: the fine grid (8) is clamped and pressed in the second filtering tank (4) through the clamping plate (31), the first aeration pipe (12) penetrates through the aeration settling tank (11) to be fixed, the sand settling plate (30) is obliquely fixed at the bottom in the aeration settling tank (11), the sand-stone separator (13) is tightly attached to the bottom of the sand settling plate (30), and the bottom of the sand settling plate (30) is provided with an electromagnetic valve (18) embedded in the inner wall of the pretreatment tank (1).

4. The rural domestic sewage treatment equipment according to claim 3, characterized in that: grit separator (13) bottom be provided with the shaping in overflow district (14) in preliminary treatment case (1) inner wall, grit separator (13) outer bottom shaping has sand discharge pipe (15), transfer case (37) with preliminary treatment case (1) welding, honeycomb duct (17) with solenoid valve (18) valve joint, honeycomb duct (17) are embedded in transfer case (37), honeycomb duct (17) one side is provided with and is fixed in aeration machine (10) on transfer case (37) inner wall.

5. The rural domestic sewage treatment equipment according to claim 4, characterized in that: the output end of the aerator (10) is connected with a first air feed pipe (33) and a second air feed pipe (34), the first air feed pipe (33) is communicated with the first aerator pipe (12), the biochemical treatment box (39) is welded with the transfer box (37), and the biological reaction tank (19), the chemical reaction tank (22), the chemical sedimentation tank (23) and the disinfection tank (24) are all formed in the biochemical treatment box (39).

6. The rural domestic sewage treatment equipment according to claim 5, characterized in that: honeycomb duct (17) bottom with biological reaction pond (19) intercommunication, microorganism case (20) run through be fixed in on biological reaction pond (19) inner wall, microorganism case (20) bottom is provided with runs through oxygen pump (21) of biological reaction pond (19) inner wall, chemical reagent box (27) with chemical reaction pond (22) inside intercommunication.

7. The rural domestic sewage treatment equipment according to claim 6, characterized in that: chemical sediment box (28) with chemical sedimentation pond (23) inner wall intercommunication, disinfectant box (29) with disinfection pond (24) inside intercommunication, ultraviolet ray disinfection lamp (26) card is pressed between disinfection pond (24) inner wall, biological reaction pond (19) with chemical sedimentation pond (23) bottom all card is pressed and is had mud pumping board (32), mud pumping board (32) outside has mud pumping pump (35) through the pipe connection.

8. The rural domestic sewage treatment equipment according to claim 7, wherein: and tail gas discharge pipes (36) are inserted into the inner walls of the biological reaction tank (19) and the chemical reaction tank (22), a discharge pipe (25) is inserted into the bottom of one side wall of the outer part of the disinfection tank (24), and a second lift pump group (6) is fixed at the top in the biochemical treatment box (39).

9. The rural domestic sewage treatment equipment according to claim 8, characterized in that: the device is characterized in that a first lifting pump group (5) is fixed to the outer top of the pretreatment tank (1), second aeration pipes (38) are fixed to the inner walls of the biological reaction tank (19) and the chemical sedimentation tank (23), the second aeration pipes (38) are communicated with the second air supply pipe (34), a tail gas air extractor (16) is fixed to the outer top of the aeration sedimentation tank (11), and a sewage conveying pipe (2) is inserted into one side wall of the outer portion of the pretreatment tank (1).