CN111747528A - Soil mixing module - Google Patents

Abstract

The invention provides a soil mixing module, which is an important component of a multi-medium soil layer system and relates to the technical field of wastewater treatment. The soil mixing module comprises a plurality of soil mixing layers and a communicating pipe penetrating through the soil mixing layers; the side wall of the communicating pipe is provided with a plurality of air holes. The soil mixing module is used for conveying oxygen or phosphorus removing agent and the like to the soil mixing layer through the communicating pipe with the air holes arranged on the side wall, so that the purification efficiency of the culture wastewater is greatly improved, and the system maneuverability of the whole multi-medium soil layer system is enhanced.

Description

Soil mixing module

Technical Field

The invention relates to the technical field of wastewater treatment, in particular to a soil mixing module.

Background

At present, many rural aquaculture and small-scale factory enterprises adopt an artificial enhanced water quality purification system, namely a Multi-medium Soil layer system (called Multi-Soil-layer in short MSL) invented by researchers such as Wakatsuki and the like of Japanese scholars.

The system makes soil modularization into a soil mixing module, a percolation layer is arranged around the soil module, an aerobic and anaerobic alternate zone environment is formed through an alternate stacking structure of the soil mixing module and the percolation layer, and pollutants in sewage are removed by utilizing the physicochemical properties of a medium and the microbial decomposition effect in the system.

However, the multi-medium soil layer system has the problems of insufficient oxygen supply and incomplete phosphorus removal, so that the purification effect of the wastewater is low.

Disclosure of Invention

It is an object of the present invention to provide a soil mixing module which helps to solve the above technical problems.

The invention is realized by the following steps:

the soil mixing module comprises a plurality of soil mixing layers and communicating pipes penetrating through the soil mixing layers; a plurality of air holes are formed in the side wall of the communicating pipe.

The soil mixing layer can be arranged into a rectangular square or an irregular flat plate, the communicating pipe can be arranged into a round pipe barrel or a rectangular pipe barrel, and the air holes are communicated with the inside and the outside of the side wall of the communicating pipe and are uniformly distributed on the side wall of the communicating pipe.

When the soil mixing module is used, the percolation layer is filled between two adjacent soil mixing layers, so that the whole multi-medium soil layer system forms an aerobic and anaerobic alternate treatment environment, and wastewater is subjected to oxidative decomposition and microbial decomposition processes in the soil mixing layers and the percolation layer in sequence. Because the communicating pipe with the plurality of air holes on the side wall successively penetrates through the plurality of soil mixing layers, air with oxygen can be conveyed into the soil mixing layers, and other materials such as a phosphorus removing agent and the like can be conveyed when the design is needed, so that the multi-medium soil layer system can continuously and efficiently purify and treat wastewater.

Furthermore, a first pipe cover is arranged at the port of the communicating pipe, and a plurality of filtering through holes are formed in the first pipe cover; when the gas flows into the port of the communicating pipe, the first pipe cover is used for filtering external impurities. The technical effects are as follows: under the condition that the air is required to be introduced from the outside, the first pipe cover can achieve the purposes of ventilating and filtering the outside, such as fallen leaves, branches and other impurities.

Further, the first pipe cover is hinged with a port of the communicating pipe; or the first pipe cover is movably arranged at the port of the communicating pipe, and the first pipe cover can move along the direction vertical to the axis of the communicating pipe. The technical effects are as follows: with the first tube cap of the port articulated of communicating pipe not occupy the flow area and the space on the soil mixing layer, and do benefit to control and rotate and open and close, help installation and fixed, be difficult to take place to become flexible and drop.

Further, a second pipe cover is arranged at a port of the communication pipe, and the second pipe cover is used for plugging the port of the communication pipe. The technical effects are as follows: under the condition that air is not required to be introduced from the outside, the second pipe cover can block the port of the communicating pipe, and foreign matters with different sizes from the outside are prevented from falling into the communicating pipe to cause blockage. The first pipe cover and the second pipe cover can be opened and closed independently respectively, and the functions of filtering and plugging are realized independently.

Further, the communication pipe is made of a PVC material. The technical effects are as follows: the PVC material has the characteristics of light weight, heat insulation, heat preservation, moisture prevention, flame retardance, simple and convenient construction and the like, and is convenient for forming the air holes in the side wall of the communicating pipe.

Further, the soil mixing layer comprises a soil body and a carbon source material; the carbon source substance includes at least one of soil biomass and charcoal. The technical effects are as follows: the soil body is used as a material carrier for filtering and purifying treatment, and carbon source materials provide carbon sources in the purifying treatment process, so that the condition of incomplete denitrification of the wastewater is avoided. The soil body is native soil, the soil biomass is native microorganism substances in the native soil, and the soil microorganisms can fix carbon, so that the carbon source durability of the system can be effectively enhanced, and the charcoal is mainly used for providing a carbon source.

Further, the soil mixing layer comprises a soil body and limestone. The technical effects are as follows: the clay body is used as a substance carrier for filtering and purifying treatment, and the limestone can increase the concentration of hydroxide ions in the solution when meeting water, so that the pH value of the wastewater is changed, and the effect of adjusting the pH value of the wastewater treatment system can be achieved.

Further, the soil mixing layer comprises a soil body and scrap iron. The technical effects are as follows: the earth body is used as a material carrier for filtering and purifying treatment, and the iron filings can form insoluble phosphate with phosphate radicals through adsorption, so that the iron filings can enhance the dephosphorization effect.

Further, the soil mixing layer comprises a soil body, soil biomass, charcoal, limestone and scrap iron; the mass ratio of the soil body, the soil biomass, the charcoal, the limestone and the scrap iron is respectively 40%, 10%, 35%, 10% and 5%. The technical effects are as follows: the soil body is used as a carrier, the charcoal provides a carbon source, the carbon circulation efficiency in the soil is improved by decomposing local biomass, the limestone is used for adjusting the pH value of the wastewater treatment system, and the iron chips are used for enhancing the dephosphorization effect. According to the statistics of actual use data, the 5 components have the highest wastewater purification treatment effect at the ratio of 40%, 10%, 35%, 10% and 5%.

Further, a plurality of overflowing holes are formed in the soil mixing layer; the soil mixing layer is penetrated through the soil mixing layer along the axial direction of the communicating pipe, and the soil mixing layer is provided with the overflowing holes which are arranged in a staggered mode along the axial direction of the overflowing holes. The technical effects are as follows: the overflow holes increase the contact area of the liquid of the percolation layer and the soil mixing layer, increase the porosity of the whole soil mixing module, and are beneficial to improving the content of dissolved oxygen, strengthening nitrification and removing phosphorus.

The invention has the beneficial effects that:

according to the soil mixing module, the communicating pipe with the air holes in the side wall is used for conveying oxygen or phosphorus removing agents to the soil mixing layer, so that the purification efficiency of the culture wastewater can be greatly improved, and the use maneuverability of the whole multi-medium soil layer system can be enhanced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic perspective view of a soil mixing module according to a first embodiment of the present invention;

fig. 2 is a schematic plan view of a soil mixing module according to a first embodiment of the present invention;

fig. 3 is a schematic perspective view of a soil mixing module according to a second embodiment of the present invention;

fig. 4 is a schematic perspective view of a soil mixing module according to a third embodiment of the present invention;

fig. 5 is a schematic perspective view of a soil mixing module according to an eighth embodiment of the present invention.

In the figure: 100-a soil mixing layer; 200-a percolation layer; 300-communicating tube; 310-air holes; 320-a first tube cover; 321-a filter through hole; 330-a second tube cover; 400-overflowing hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. The components of embodiments of the present invention that are generally described and illustrated in the figures can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The first embodiment:

fig. 1 is a schematic perspective view of a soil mixing module according to a first embodiment of the present invention; fig. 2 is a schematic plan view of a soil mixing module according to a first embodiment of the present invention. Referring to fig. 1 and 2, the present embodiment provides a soil mixing module, which includes a plurality of soil mixing layers 100 and a communicating pipe 300 penetrating through the plurality of soil mixing layers 100; the number of the soil mixing layers 100 is at least two; a plurality of ventilation holes 310 are formed in the sidewall of the communication pipe 300.

Further, as shown in fig. 1 and 2, the soil mixing layer 100 may be configured as a rectangular square or an irregular flat plate, the communication pipe 300 may be configured as a circular pipe or a rectangular pipe, and the ventilation holes 310 communicate with the inside and the outside of the side wall of the communication pipe 300 and should be uniformly distributed on the side wall of the communication pipe 300.

The communication pipe 300 is made of a PVC material, which has higher corrosion resistance than other metal pipes. The number of the communication pipes 300 is plural, and when the soil mixing layer 100 is in a rectangular block shape, the two communication pipes 300 are respectively located at diagonal positions of the rectangular block. Alternatively, the aperture of the communicating pipe 300 is about 0.08 m, and the aperture of the vent 310 is about 0.01 m.

Alternatively, the soil mixing layer 100 may be sized to have a length of about 1.95 meters, a width of about 0.5 meters and a thickness of about 0.05 meters.

The working principle of the soil mixing module is as follows:

when the soil mixing module is used, the soil mixing layer 100 and the percolation layer 200 are alternately superposed to form an aerobic and anaerobic alternate treatment environment, and wastewater is subjected to oxidative decomposition and microbial decomposition processes in the soil mixing layer 100 and the percolation layer 200 in sequence. Because the communicating pipe 300 with the plurality of air holes 310 formed in the side wall penetrates through the plurality of soil mixing layers 100 in sequence, air with oxygen can be conveyed to the soil mixing layers 100, and other materials such as a phosphorus removing agent and the like can be conveyed when the design is needed, so that the multi-medium soil layer system can continuously and efficiently purify and treat wastewater.

Second embodiment:

fig. 3 is a schematic perspective view of a soil mixing module according to a second embodiment of the present invention. Referring to fig. 3, the present embodiment provides a soil mixing module, which is substantially the same as the soil mixing module of the first embodiment, and the difference between the two embodiments is that a first pipe cover 320 is disposed at a port of a communication pipe 300 in the soil mixing module of the present embodiment, and a plurality of filtering through holes 321 are disposed on the first pipe cover 320; when the air flows through the port of the communication pipe 300, the first pipe cover 320 is used for filtering foreign objects such as fallen leaves and branches.

Further, as shown in fig. 3, the first tube cover 320 is hinged to a port of the communication tube 300; alternatively, the first tube cap 320 is movably disposed at the port of the communication tube 300, and the first tube cap 320 can move in the direction perpendicular to the axis of the communication tube 300.

The third embodiment:

fig. 4 is a schematic perspective view of a soil mixing module according to a third embodiment of the present invention. Referring to fig. 4, the present embodiment provides a soil mixing module, which is substantially the same as the soil mixing module of the first embodiment or the second embodiment, and the difference between the two embodiments is that a second pipe cover 330 is disposed at a port of a communication pipe 300 in the soil mixing module of the present embodiment, and the second pipe cover 330 is used for plugging the port of the communication pipe 300.

The first tube cover 320 and the second tube cover 330 can be opened and closed independently, and the filtering and blocking functions can be realized independently.

The fourth embodiment:

the present embodiment provides a soil mixing module, which is substantially the same as the soil mixing module of the first, second or third embodiment, except that the soil mixing layer 100 in the soil mixing module of the present embodiment includes a soil body and a carbon source material; the carbon source substance includes at least one of soil biomass and charcoal.

Wherein, the soil mixing layer 100 is formed by mixing a soil body, soil biomass and charcoal.

Fifth embodiment:

the present embodiment provides a soil mixing module, which is substantially the same as the soil mixing module of the first, second or third embodiment, except that the soil mixing layer 100 in the soil mixing module of the present embodiment includes a soil body and limestone.

Wherein, the soil mixing layer 100 is formed by mixing a soil body and limestone.

Sixth embodiment:

the present embodiment provides a soil mixing module, which is substantially the same as the soil mixing module of the first, second or third embodiment, except that the soil mixing layer 100 in the soil mixing module of the present embodiment includes a soil body and iron pieces.

Wherein, the soil mixing layer 100 is formed by mixing a soil body and scrap iron.

Seventh embodiment:

the present embodiment provides a soil mixing module, which is substantially the same as the soil mixing module of the first, second or third embodiment, except that the soil mixing layer 100 in the soil mixing module of the present embodiment includes a soil body, soil biomass, charcoal, limestone and iron pieces; the mass component ratios of the soil body, the soil biomass, the charcoal, the limestone and the scrap iron are respectively 40%, 10%, 35%, 10% and 5%.

Wherein, the soil mixing layer 100 is formed by mixing a soil body, soil biomass, charcoal, limestone and scrap iron. The soil body is native soil, the soil biomass is native microorganism substances in the native soil, and the soil microorganism can fix carbon, so that the carbon source durability of the system can be effectively enhanced, and the charcoal is mainly used for providing a carbon source.

Eighth embodiment:

fig. 5 is a schematic perspective view of a soil mixing module according to an eighth embodiment of the present invention. Referring to fig. 5, the present embodiment provides a soil mixing module, which is substantially the same as any one of the soil mixing modules of the first to seventh embodiments, and the difference between the soil mixing module of the present embodiment and the soil mixing module is that a plurality of overflowing holes 400 are formed in the soil mixing layer 100; the overflow holes 400 penetrate through the soil mixing layers 100 along the axial direction of the communicating pipe 300, and the overflow holes 400 of two adjacent soil mixing layers 100 are arranged in a staggered manner along the axial direction perpendicular to the overflow holes 400.

The diameter of the overflow holes 400 is preferably set to about 0.05 m, and the number of the overflow holes 400 may be set to 8 to 20 according to the size of the soil mixing layer 100.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The soil mixing module is characterized by comprising a plurality of soil mixing layers (100) and communicating pipes (300) penetrating through the soil mixing layers (100); the side wall of the communicating pipe (300) is provided with a plurality of air holes (310).

2. The soil mixing module according to claim 1, wherein a port of the communicating pipe (300) is provided with a first pipe cover (320), and a plurality of filtering through holes (321) are formed on the first pipe cover (320); when the gas flows into the port of the communicating pipe (300), the first pipe cover (320) is used for filtering foreign matters outside.

3. The soil mixing module as claimed in claim 2, wherein the first pipe cover (320) is hinged with a port of the communication pipe (300);

or, the first pipe cover (320) is movably arranged at a port of the communication pipe (300), and the first pipe cover (320) can move along a direction perpendicular to an axial direction of the communication pipe (300).

4. The soil mixing module according to claim 1, wherein the port of the communication pipe (300) is provided with a second pipe cover (330), the second pipe cover (330) being used to block the port of the communication pipe (300).

5. The soil mixing module according to claim 1, wherein the communication pipe (300) is made of a PVC material.

6. The soil mixing module as claimed in claim 1, wherein the soil mixing layer (100) comprises a soil body and a carbon source material; the carbon source substance includes at least one of soil biomass and charcoal.

7. The soil mixing module as claimed in claim 1, wherein the soil mixing layer (100) comprises a soil body and limestone.

8. The soil mixing module as claimed in claim 1, wherein the soil mixing layer (100) comprises a soil body and iron pieces.

9. The soil mixing module according to claim 1, wherein the soil mixing layer (100) comprises a body of earth, soil biomass, charcoal, limestone and iron filings; the mass ratio of the soil body, the soil biomass, the charcoal, the limestone and the scrap iron is respectively 40%, 10%, 35%, 10% and 5%.

10. The soil mixing module as claimed in claim 1, wherein the soil mixing layer (100) is provided with a plurality of diffuser holes (400); the overflowing hole (400) penetrates through the soil mixing layer (100) along the axial direction of the communicating pipe (300), and the overflowing holes (400) in the soil mixing layer (100) are arranged in a staggered mode along the axial direction perpendicular to the overflowing holes (400).

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