CN217173510U

CN217173510U - Rural domestic sewage recycling's processing system

Info

Publication number: CN217173510U
Application number: CN202122759875.8U
Authority: CN
Inventors: 蔺亚青; 潘兴华; 杨峰; 王文文
Original assignee: Jiangsu Nanda Huaxing Environmental Protection Technology Co ltd
Current assignee: Jiangsu Nanda Huaxing Environmental Protection Technology Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-08-12
Anticipated expiration: 2031-11-11

Abstract

The utility model relates to a rural domestic sewage regeneration's processing system belongs to sewage treatment technical field. The utility model comprises a septic tank, a grid well, a regulating tank, an air floatation tank, an SBBR tank, an MBR tank, a membrane component and a recycling tank which are connected in sequence; a first tank and a second tank of the septic tank are communicated through a first manure passing pipe, and the second tank and a third tank are communicated through a second manure passing pipe; the manure outlets of the first manure passing pipe and the second manure passing pipe are positioned on the same horizontal plane, and the horizontal plane where the manure inlet of the first manure passing pipe is positioned below the horizontal plane where the manure inlet of the second manure passing pipe is positioned. The utility model has the advantages of reasonable water distribution structure, high energy utilization rate, simple structure, easy manufacture, small occupied area and the like, and is a treatment system for rural domestic sewage recycling with low cost, energy conservation and high efficiency.

Description

Rural domestic sewage recycling's processing system

Technical Field

The utility model relates to a rural domestic sewage regeneration's processing system belongs to sewage treatment technical field.

Background

Rural domestic sewage is derived from kitchen sewage, toilet sewage, domestic washing sewage and other mixed sewage, and the rural domestic sewage treatment system is characterized in that on one hand, residential points of rural residents are not distributed in a centralized manner, discharge points are too dispersed, most of sewage is directly discharged into a water body without being treated to pollute the water environment, on the other hand, a sewage discharge system is deficient, rain and sewage are converged in rainy days, and the sewage quantity and the treatment difficulty are increased.

Because rural families need a large amount of water for flushing toilets, washing vehicles, greening, road flushing, ponds and the like, the recycling of rural domestic sewage can effectively protect limited high-quality water resources, can meet the ever-increasing water demand, and can save economic loss brought to the area due to environmental deterioration. Therefore, the rural sewage recycling can realize benign water balance and water circulation, and achieve the purposes of resource saving, recycling and environmental protection. The construction of sewage treatment and recycling facilities is still the key investment field of thirteen-five planning, and obviously, the recycling of rural domestic sewage is very necessary.

The traditional rural domestic sewage treatment system has the defects of large floor area and high treatment cost, so that the rural domestic sewage is difficult to recycle.

Disclosure of Invention

1. Problems to be solved

Not enough to prior art exists, the utility model provides a rural domestic sewage regeneration utilizes's processing system, the excrement mouth that advances of excrement pipe and the excrement mouth that advances of excrement pipe are crossed to the second of first cross excrement pipe staggers from top to bottom and keeps the certain distance, has prolonged the dwell time of excrement and urine in the pond, improves the anaerobic fermentation efficiency of system, and processing cost is low, and area is little, and energy utilization is high, and is energy-conserving high-efficient, and the water distribution is rational in infrastructure, has solved the problem that prior art area is big, processing cost is high.

2. Technical scheme

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

the utility model provides a treatment system for recycling rural domestic sewage, which comprises a septic tank, a grid well, an adjusting tank, an air floatation tank, an SBBR tank, an MBR tank, a membrane component and a recycling tank which are connected in sequence; the septic tank comprises a first tank, a second tank and a third tank which are sequentially communicated, the first tank and the second tank are communicated through a first manure passing pipe, and the second tank and the third tank are communicated through a second manure passing pipe; the manure outlets of the first manure passing pipe and the second manure passing pipe are positioned on the same horizontal plane, and the horizontal plane where the manure inlet of the first manure passing pipe is positioned below the horizontal plane where the manure inlet of the second manure passing pipe is positioned.

Preferably, the central axis of the manure outlet of the first manure passing pipe and the central axis of the manure inlet of the first manure passing pipe form an included angle α, where α is 75-100 °.

Preferably, the central axis of the manure outlet of the second manure passing pipe and the central axis of the manure inlet of the second manure passing pipe form an included angle β, β being 75-100 °.

Preferably, the distance between the manure outlet of the first manure passing pipe and the bottom of the first pool is H ₁ The distance between the manure inlet of the first manure passing pipe and the bottom of the first pool is H ₂ (ii) a The distance between the manure outlet of the second manure passing pipe and the bottom of the second pool is H ₃ The distance between the manure inlet of the second manure passing pipe and the bottom of the second pool is H ₄ (ii) a Then H ₁ ：H ₃ ：H ₂ ：H ₄ ＝1:1:2:3。

Preferably, the MBR tank is a split type MBR tank, and the MBR tank is provided with a liftable cyclone microbubble aerator.

Preferably, the SBBR tank is provided with a liftable cyclone micro-bubble aerator and a decanter, the liftable cyclone micro-bubble aerator is used for controlling the dissolved oxygen concentration in the SBBR tank, and the decanter is used for conveying the water on the surface of the SBBR tank to the MBR tank.

Preferably, the grating well is provided with a coarse grating and a fine grating in sequence, and the water outlet of the grating well is positioned at the upper part of the grating well.

Preferably, a filler unit is fixedly arranged in the SBBR tank, and the filler unit is a fiber type combined filler.

Preferably, the bottom of the membrane module is communicated with the bottom of the MBR tank through a conveying pipe, and the conveying pipe is provided with a circulating pump.

Preferably, the upper part of the membrane module is communicated with the upper part of the MBR tank through a pipeline.

Preferably, the grid gaps of the coarse grids are 10-15mm, and the grid gaps of the fine grids are 3-5 mm.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) the utility model discloses a rural domestic sewage regeneration's processing system, the excrement inlet of excrement pipe and the excrement inlet of excrement pipe are crossed to the second of first cross excrement pipe stagger from top to bottom and keep the certain distance, and the dwell time of extension excrement and urine in the pond improves the anaerobic fermentation efficiency of system, and processing cost is low, and area is little, and the water distribution is rational in infrastructure, and is energy-conserving high-efficient.

(2) The utility model discloses a rural domestic sewage regeneration's processing system, first excrement pipe and the excrement pipe of crossing of second set up to similar "L" type of falling, and the excrement mouth that advances of first excrement pipe is located 1/2 departments of first pond pool wall, and the excrement mouth that advances of excrement pipe is located 1/3 departments of second pond pool wall is crossed to the second, improves transmission efficiency, can prolong excrement and urine dwell time simultaneously.

(3) The utility model discloses a treatment system for recycling rural domestic sewage, wherein an MBR tank is a split type MBR tank, feed liquid is circulated and operated in a cross flow manner through a circulating pump, the operation is reliable, and the operation is convenient; and the MBR tank and the SBBR tank are internally provided with a lifting type rotational flow microbubble aerator, so that the energy consumption is low and the operation is convenient.

(4) The utility model discloses a rural domestic sewage regeneration's processing system, SBBR pond adopt fibre type combination to pack, and the filler is fixed in the reactor, provides a stable absorption growth environment for the microorganism, and the filler still has certain filtering action simultaneously, can effectively reduce the aquatic suspended solid concentration.

Drawings

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

in the figure:

100. a septic tank; 110. a first manure passing pipe; 120. a second manure passing pipe;

200. a grid well; 210. coarse grating; 220. fine grids; 230. a first effluent weir;

300. A regulating tank; 310. a water passing hole; 320. opening an aeration pipe;

400. an air floatation tank; 410. a second effluent weir; 420. a fan;

500. an SBBR pool; 510. a filler unit; 520. the liftable rotational flow microbubble aerator I; 530. decanting device; 540. a third effluent weir;

600. an MBR tank; 610. a liftable rotational flow microbubble aerator II;

700. a circulation pump; 800. a membrane module; 900. and (7) a recycling pool.

Detailed Description

The following detailed description of exemplary embodiments of the invention refers to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration exemplary embodiments in which the invention may be practiced, and in which elements and features of the invention are identified by reference numerals. The following more detailed description of the embodiments of the present invention is not intended to limit the scope of the invention, as claimed, but is presented for purposes of illustration only and not limitation to provide the best mode contemplated for carrying out the invention and to enable any person skilled in the art to practice the invention. It will, however, be understood that various modifications and changes may be made without departing from the scope of the invention as defined by the appended claims. The detailed description and drawings are to be regarded as illustrative rather than restrictive, and any such modifications and variations are intended to be included within the scope of the present invention as described herein. Furthermore, the background is intended to illustrate the present state of the art and the meaning of the present development and is not intended to limit the present invention or the present application and the field of application of the present invention.

The utility model provides a rural domestic sewage regeneration's processing system, including septic tank 100, grid well 200, equalizing basin 300, air supporting pond 400, SBBR pond 500, MBR pond 600, membrane module 800 and retrieval and utilization pond 900 that connect gradually. Wherein, the utility model discloses a septic tank 100, grid well 200, air supporting pond 400 handle excrement and urine, suspended solid and filter the sediment as the preliminary treatment means, and the SBBR method is as biochemical section technology, combines together the operation of formula of preface batch formula and biofilm reactor, gets rid of most pollutants, and the cost is lower, and MBR pond 600 is as advanced treatment retrieval and utilization technology, is the high-efficient combination of membrane separation technique and biological treatment method, has replaced the secondary sedimentation tank in the active sludge method, carries out solid-liquid separation.

Further explaining, in the utility model, the septic tank 100 adopts a three-cell septic tank 100, which comprises a first tank, a second tank and a third tank which are sequentially communicated, wherein the first tank and the second tank are communicated through a first excrement passing pipe 110, and the second tank and the third tank are communicated through a second excrement passing pipe 120; the manure outlets of the first manure passing pipe 110 and the second manure passing pipe 120 are located on the same horizontal plane, and the horizontal plane where the manure inlet of the first manure passing pipe 110 is located below the horizontal plane where the manure inlet of the second manure passing pipe 120 is located. The manure inlet of the first manure passing pipe 110 and the manure inlet of the second manure passing pipe 120 are staggered up and down and keep a certain distance, so that the retention time of manure in the pool is prolonged under the condition of not increasing the cost and the like, and anaerobic fermentation is facilitated. In a preferred embodiment, the manure outlet of the first manure passing pipe 110 is spaced from the bottom of the first tank by a distance H ₁ The distance between the manure inlet of the first manure passing pipe 110 and the bottom of the first tank is H ₂ (ii) a The distance between the manure outlet of the second manure passing pipe 120 and the bottom of the second tank is H ₃ The distance between the manure inlet of the second manure passing pipe 120 and the bottom of the second tank is H ₄ (ii) a Then H ₁ ：H ₃ ：H ₂ ：H ₄ The manure inlet of the first manure passing pipe 110 is positioned at 1/2 of the first pool wall, and the manure inlet of the second manure passing pipe 120 is positioned at 1/3 of the second pool wall, so that the manure stays in the pool for a longer time, and the anaerobic fermentation effect is optimal.

Further, an included angle between a central axis of the manure outlet of the first manure passing pipe 110 and a central axis of the manure inlet of the first manure passing pipe 110 is α, and α is 75-100 °. The central axis of the manure outlet of the second manure passing pipe 120 and the central axis of the manure inlet of the second manure passing pipe 120 form an included angle β, where β is 75-100 °. As a specific preferred embodiment, the first manure passing pipe 110 and the second manure passing pipe 120 are arranged in an inverted "L" shape, that is, the manure outlet direction of the first manure passing pipe 110 and the second manure passing pipe 120 is a horizontal direction, the manure inlet direction is vertical and upward, and meanwhile, the first manure passing pipe 110 and the second manure passing pipe 120 are made of PVC material, and the inner walls are smooth, so as to improve the conveying efficiency.

The utility model discloses a grid well 200 has set gradually thick grid 210 and thin grid 220, and the delivery port of grid well 200 is located the upper portion of grid well 200. In a preferred embodiment, the grid gap of the thick grid 210 is 10-15mm, and the grid gap of the thin grid 220 is 3-5 mm. The wastewater of the septic tank 100 automatically flows to the grating well 200, firstly, large suspended matters are intercepted by a thick grating 210 with 10-15mm of grating clearance, and then floating matters and particles with small particle size are intercepted by a thin grating 220 with 3-5mm of grating clearance, so that the SS of the wastewater is reduced.

In a specific embodiment, a first effluent weir 230 is disposed at the upper part of the grating well 200, and effluent flows out to the regulating reservoir 300 through the first effluent weir 230. The bottom of the adjusting tank 300 is provided with a water through hole 310, and the water through hole 310 is generally in a shape of a circle, a rectangle, a square, and the like. After the water flow flows into the air flotation tank 400 from the water through the water tunnel 310, the flocculation effect can be improved by adding flocculating agents such as polyaluminum chloride (PAC) and Polyacrylamide (PAM). The air flotation tank 400 is aerated and stirred by the perforated aeration pipe 320, and the effluent flows out of the air flotation tank 400 to the SBBR tank 500 through the second effluent weir 410 at the upper part of the air flotation tank.

The SBBR tank 500 is provided with a liftable cyclone micro-bubble aerator I520 and a decanter 530, wherein the liftable cyclone micro-bubble aerator I520 is used for controlling the dissolved oxygen concentration in the SBBR tank 500, and the decanter 530 is used for conveying the water on the surface of the SBBR tank 500 to the MBR tank 600. A filler unit 510 is fixedly arranged in the SBBR tank 500, and the filler unit 510 is a fiber type combined filler. The filler unit 510 provides a stable adsorption growth environment for microorganisms, and the filler also has a certain filtering effect, so that the concentration of suspended matters in the effluent can be effectively reduced. It is noted that a third effluent weir 540 may also be provided at the upper portion of the SBBR tank 500, and the decanter 530 decants clarified water from the stationary tank surface to the third effluent weir 540, and the water from the third effluent weir 540 flows out into the MBR tank 600.

The MBR tank 600 is a split type MBR tank 600, feed liquid is circulated and operated in a cross flow manner through a circulating pump 700, and the operation is reliable and convenient. And a liftable rotational flow micro-bubble aerator II 610 is arranged in the MBR tank 600 and is used for adjusting the concentration of dissolved oxygen in the MBR tank 600. Meanwhile, the lifting type rotational flow microbubble aerator is low in energy consumption, compared with the traditional aerator, the energy consumption can be reduced by 25% -30%, the aerator of the type can rotate 360 degrees, the movement is flexible, the aerator head is moved to the water surface for replacement during maintenance, and water does not need to be drained.

In the utility model, the MBR tank 600 is separated from the membrane module 800, so that the membrane module 800 can be conveniently replaced. The bottom of the membrane module 800 is communicated with the bottom of the MBR tank 600 through a delivery pipe, and the delivery pipe is provided with a circulating pump 700. The upper part of the membrane module 800 is communicated with the upper part of the MBR tank 600 through a pipeline. The mud-water separation and the sludge backflow are realized through the circulating pump 700, the membrane pollution is controlled by the shearing action generated by the high-speed operation of the pump, and the effluent of the membrane module 800 is conveyed to the recycling tank 900 and recycled to the corresponding recycling point through a pipeline.

The structure of the present invention will be described below with reference to a specific embodiment of the present invention, and the present invention relates to a specific operation process.

In a certain domestic sewage treatment and reuse engineering embodiment, sewage is mainly discharged from daily domestic sewage of sanitary ware, bath, kitchen and the like, and the current sewage discharge amount is 60-100m ³ D, wherein COD _cr 216-317mg/L, BOD ₅ 94-138mg/L, 88-160mg/L SS, 6.5-9.0 pH value, BOD ₅ /COD _cr Is greater than 0.3. After the treatment of the treatment system of the utility model, the reuse water COD _cr 16mg/L, BOD ₅ 15mg/L, 9mg/L SS and 7.0 pH value, which is far superior to the standard of recycled water quality.

In this embodiment, the wastewater first enters the first tank of the septic tank 100 for preliminary sedimentation, the wastewater is fermented and decomposed from the first tank to the second tank through the first septic pipe 110, and the fermented wastewater is stored in the second septic pipe 120 to the third tank. The wastewater of the septic tank 100 automatically flows to the grating well 200, large suspended matters are intercepted by the thick grating 210 with the gap of 15mm between the gratings, and small floating matters and particulate matters are intercepted by the thin grating 220 with the gap of 5mm between the gratings, so that the SS of the wastewater is reduced. The effluent of the grid tank enters the regulating tank 300 through the first effluent weir 230 to regulate the water quantity and balance the water quality, the effluent of the regulating tank 300 enters the floatation tank 400 through the water hole 310, and polyaluminium chloride (PAC) and Polyacrylamide (PAM) are added into the first grid of the floatation tank 400 to improve the flocculation effect. The air flotation tank 400 is aerated and stirred by the perforated aeration pipe 320, effluent flows out of the upper second effluent weir 410 to the SBBR tank 500, fiber type combined filler is filled in the tank, a liftable rotational flow microbubble aerator I520 is used for oxygenation, and 2-3mg/L of dissolved oxygen is controlled. The SBBR tank 500 is internally provided with a decanter 530 which decants clear water from the static tank surface to a third effluent weir 540 at the tank part, the water of the third effluent weir 540 flows out to the split MBR, the MBR is separated from the membrane module 800, and mud-water separation and sludge backflow are realized through the circulating pump 700. Meanwhile, the MBR tank 600 adopts a liftable rotational flow microbubble aerator II 610 to oxygenate to control dissolved oxygen, and effluent is delivered to the recycling tank 900 and recycled to a corresponding recycling point. As a specific implementation manner, the present invention provides air to the air flotation tank 400, the SBBR tank 500, and the MBR tank 600 by one or more fans 420, so as to achieve the corresponding air flotation or oxygenation purpose.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a rural domestic sewage regeneration's processing system which characterized in that: comprises a septic tank (100), a grid well (200), a regulating tank (300), an air flotation tank (400), an SBBR tank (500), an MBR tank (600), a membrane module (800) and a recycling tank (900) which are connected in sequence;

the septic tank (100) comprises a first tank, a second tank and a third tank which are sequentially communicated, the first tank and the second tank are communicated through a first manure passing pipe (110), and the second tank and the third tank are communicated through a second manure passing pipe (120);

The manure outlets of the first manure passing pipe (110) and the second manure passing pipe (120) are positioned on the same horizontal plane, and the horizontal plane where the manure inlet of the first manure passing pipe (110) is positioned below the horizontal plane where the manure inlet of the second manure passing pipe (120) is positioned.

2. The rural domestic sewage recycling treatment system according to claim 1, wherein: an included angle between the central axis of the manure outlet of the first manure passing pipe (110) and the central axis of the manure inlet of the first manure passing pipe (110) is alpha, and alpha is 75-100 degrees; and/or

An included angle between the central axis of the feces outlet of the second feces passing pipe (120) and the central axis of the feces inlet of the second feces passing pipe (120) is beta, and the beta is 75-100 degrees.

3. The rural domestic sewage recycling treatment system of claim 1, wherein: the distance between the manure outlet of the first manure passing pipe (110) and the bottom of the first pool is H ₁ The distance between the manure inlet of the first manure passing pipe (110) and the bottom of the first pool is H ₂ (ii) a The distance between the manure outlet of the second manure passing pipe (120) and the bottom of the second pool is H ₃ The distance between the manure inlet of the second manure passing pipe (120) and the bottom of the second pool is H ₄ (ii) a Then H ₁ ：H ₃ ：H ₂ ：H ₄ ＝1:1:2:3。

4. The rural domestic sewage recycling treatment system of claim 1, wherein: the MBR tank (600) is a split type MBR tank (600), and the MBR tank (600) is internally provided with a liftable rotational flow micro-bubble aerator.

5. The rural domestic sewage recycling treatment system of claim 1, wherein: the SBBR tank (500) is internally provided with a liftable cyclone micro-bubble aerator and a decanter (530), the liftable cyclone micro-bubble aerator is used for controlling the dissolved oxygen concentration in the SBBR tank (500), and the decanter (530) is used for conveying the water on the surface of the SBBR tank (500) to the MBR tank (600).

6. The rural domestic sewage recycling treatment system of claim 1, wherein: the grid well (200) is sequentially provided with a thick grid (210) and a thin grid (220), and a water outlet of the grid well (200) is positioned at the upper part of the grid well (200).

7. The rural domestic sewage recycling treatment system of claim 1, wherein: and a filler unit (510) is fixedly arranged in the SBBR tank (500), and the filler unit (510) is a fiber type combined filler.

8. The rural domestic sewage recycling treatment system of claim 1, wherein: the bottom of the membrane module (800) is communicated with the bottom of the MBR tank (600) through a delivery pipe, and the delivery pipe is provided with a circulating pump (700).

9. The rural domestic sewage recycling treatment system of claim 1, wherein: the upper part of the membrane module (800) is communicated with the upper part of the MBR tank (600) through a pipeline.

10. The rural domestic sewage recycling treatment system of claim 6, wherein: the grid gap of the thick grid (210) is 10-15mm, and the grid gap of the thin grid (220) is 3-5 mm.