CN205635081U - Difficult constructed wetland system of blockking up - Google Patents

Abstract

A constructed wetland system that is not easily clogged, comprising a sewage pretreatment tank, a constructed wetland bed connected to the sewage pretreatment tank through a connecting pipe, and a sponge layer and a matrix layer arranged in the constructed wetland bed, the sewage pretreatment tank The water inlet chamber at the upper part and the pH adjustment chamber at the lower part are separated by a partition, and the water supply pipe for adding water to the water inlet chamber and the pH adjustment for adding a pH regulator to the pH adjustment chamber are respectively arranged above and below the partition board Under the sponge layer, there is a mud discharge pipe for discharging the sedimentation mud in the constructed wetland bed, and a drainage pipe for discharging the treated water of the constructed wetland bed is arranged near the upper end of the sponge layer. layer, and reeds are planted above the matrix layer. The utility model can effectively reduce the blocking probability of the wetland, ensure the normal operation of the artificial wetland system, and improve the operating life.

Description

A Constructed Wetland System Not Easy to Clog

technical field

The utility model relates to the technical field of artificial wetlands, in particular to an artificial wetland system which is not easily blocked.

Background technique

Constructed wetland is a new type of ecological sewage treatment technology, which is suitable for sewage treatment in large, medium and small towns and rural areas in my country. It not only has good organic matter removal effect, but also has high phosphorus and nitrogen removal functions. In addition, it also has excellent characteristics such as convenient operation and management and low engineering cost. However, judging from the existing engineering practice, a large amount of suspended matter in the incoming water enters the constructed wetland due to poor separation, which can easily cause blockage of the wetland, especially the head of the wetland, greatly reduce the hydraulic conductivity and reduce the hydraulic load. According to the survey of more than 100 operating constructed wetlands by the US Environmental Protection Agency, nearly half of the constructed wetland systems have become clogged within 5 years of being put into use. Excessive blockage leads to poor hydraulic circulation in wetlands, reduced treatment effects, and shortened operating life.

Utility model content

The purpose of the utility model is to provide a constructed wetland system that is not easily blocked, which can effectively reduce the probability of blocking the constructed wetland, thereby improving the operating life of the constructed wetland system.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a constructed wetland system that is not easy to be blocked, including a sewage pretreatment pool, a constructed wetland bed connected to the sewage pretreatment pool through a connecting pipe, and an artificial wetland The sponge layer and the matrix layer in the wetland bed, the sewage pretreatment tank is divided into an upper water inlet chamber and a lower pH adjustment chamber by a partition, and the partition is provided with a water outlet and set at the water outlet There is a grille, and the water supply pipe for adding water to the water inlet chamber and the pH adjustment pipe for adding pH regulator to the pH adjustment chamber are respectively arranged above and below the partition, and the water inlet and water outlet of the connecting pipe are respectively set There are filter screen I and filter screen II, and a mud discharge pipe for discharging the sedimentation mud in the constructed wetland bed is provided under the sponge layer, and a drain pipe for discharging treated water from the constructed wetland bed is provided near the upper end of the sponge layer. The substrate layer is arranged above the sponge layer, and reeds are planted above the substrate layer.

Preferably, the connecting pipe includes a water passage pipe and a water inlet pipe and a water outlet pipe respectively arranged at both ends of the water passage pipe, the diameters of the water inlet pipe and the water outlet pipe are the same, and the water passage The diameter of the section pipe is smaller than the diameter of the water inlet section pipe.

Preferably, a backup water supply pipe for adding water to the water inlet chamber is also provided above the partition.

Compared with the prior art, the utility model has the following beneficial effects: the constructed wetland system described in the utility model is not easy to be clogged. The layer-by-layer filtration of filter screen Ⅰ and filter screen Ⅱ can effectively filter and isolate the floating matter, sediment, organic suspended matter and inorganic suspended matter of a certain particle size in the sewage that may cause wetland blockage, and effectively prevent the artificial wetland bed from being blocked. Extend the operating life of constructed wetlands. In addition, when the water supply pipe is blocked, the spare water supply pipe can be used for water supply, which will not affect the normal operation of the entire constructed wetland system. A sponge layer with a low density is set in the constructed wetland bed, and the sponge layer is suspended on the water, so that the sponge layer can be stirred when the backwashing is blocked to achieve the purpose of flushing the sponge layer, and then the constructed wetland system is not easy to block and long-term stable purpose of operation.

Description of drawings

Fig. 1 is the structural representation of the artificial wetland system that the utility model is not easy to clog;

Fig. 2 is a schematic diagram of a cross-sectional structure at A-A in Fig. 1;

Fig. 3 is a schematic diagram of a cross-sectional structure at B-B in Fig. 1;

Fig. 4 is a schematic diagram of the partition structure of the present utility model;

Marks in the figure: 1. Sewage pretreatment tank, 2. Constructed wetland bed, 3. Water supply pipe, 4. Backup water supply pipe, 5. Mud discharge pipe, 6. Partition plate, 7. Sponge layer, 8. Matrix layer, 9. Drainage pipe, 10. Connecting pipe, 11. pH adjustment pipe, 12. Grille, 13. Filter screen I, 14. Filter screen II.

detailed description

The utility model is described in detail below in conjunction with accompanying drawing and specific embodiment, present embodiment is based on the premise of the technical scheme of the utility model, has provided detailed implementation and specific operation process, but the protection scope of the utility model is not limited to the following the described embodiment.

As shown in the figure, a constructed wetland system that is not easily blocked includes a sewage pretreatment pool 1, a constructed wetland bed 2 connected to the sewage pretreatment pool 1 through a connecting pipe 10, and a sponge arranged in the constructed wetland bed 2 layer 7 and matrix layer 8, the sewage pretreatment tank 1 is divided into an upper water inlet chamber and a lower pH adjustment chamber by a partition 6, and the partition 6 is provided with a water outlet and at the water outlet A grid 12 is provided, and a water supply pipe 3 for adding water to the water inlet chamber and a pH adjustment pipe 11 for adding a pH regulator to the pH adjustment chamber are respectively arranged above and below the partition plate 6 . The sewage to be treated enters the water inlet chamber through the water supply pipe 3, and enters the pH adjustment chamber after being filtered by the grid 12. A pH adjuster is added to the sewage in the pH adjustment chamber through the pH adjustment pipe 11 to adjust the acidity and alkalinity of the sewage, and prevent the constructed wetland bed 2 from being corroded by excessive acidity or alkalinity of the sewage.

The water inlet and the water outlet of the connecting pipe 10 are respectively provided with filter screen I13 and filter screen II14, and the sewage after pH adjustment is filtered by the filter screen I13 and the filter screen II14 to effectively remove the floating particles in the sewage that may cause wetland blockage. The solids, sediments, and organic and inorganic suspended solids of a certain size are filtered and isolated to prevent the sewage entering the constructed wetland bed 2 from clogging the constructed wetland bed 2 . The connecting pipe 10 includes a water passage pipe and a water inlet pipe and a water outlet pipe respectively arranged at both ends of the water passage pipe. The diameters of the water inlet pipe and the water outlet pipe are the same, and the water passage pipe The diameter is smaller than the diameter of the inlet pipe. The diameter of the water inlet pipe and the water outlet pipe is relatively large, which ensures that the water inlet pipe and the water outlet pipe will not be blocked; work efficiency.

Below the sponge layer 7, a mud discharge pipe 5 for discharging the sedimented mud in the constructed wetland bed 2 is provided, and a drain pipe 9 for discharging treated water from the constructed wetland bed 2 is provided near the upper end of the sponge layer 7. The substrate layer 8 is arranged above the sponge layer 7 , and reeds are planted above the substrate layer 8 .

A spare water supply pipe 4 for adding water to the water inlet cavity is also arranged above the dividing plate 6 to prevent the whole artificial wetland system from being paralyzed due to the blockage of the water supply pipe 3 .

Claims (3)

1. null1. the artificial wet land system being not easily blocked，It is characterized in that: include sewage pretreatment tank (1)、The artificial swamp bed body (2) being connected with sewage pretreatment tank (1) by connecting tube (10) and the spongy layer (7) being arranged in artificial swamp bed body (2) and hypothallus (8)，It is divided into superposed intake antrum by dividing plate (6) in described sewage pretreatment tank (1) and is positioned at the pH regulator chamber of bottom，It is provided with outlet on described dividing plate (6) and water outlet is provided with grid (12)，The feed pipe (3) added water in being respectively provided with oriented intake antrum above and below dividing plate (6) and the pH regulator pipe (11) adding pH adjusting agent to pH regulator intracavity，The water inlet of described connecting tube (10) and water outlet are respectively arranged with drainage screen I (13) and drainage screen II (14)，The discharge pipeline (5) of precipitation mud it is provided with in discharging artificial swamp bed body (2) in spongy layer (7) lower section，It is being provided with near spongy layer (7) upper end surface for discharging the drain pipe (9) of water after artificial swamp bed body (2) processes，Described hypothallus (8) is arranged on the top of spongy layer (7)，And it is implanted with phragmites communis in the top kind of hypothallus (8).
2. A kind of artificial wet land system being not easily blocked, it is characterized in that: described connecting tube (10) included water section pipe and the inlet segment pipe being separately positioned on water section pipe two ends and water exit end pipe, described inlet segment pipe is identical with the diameter of water exit end pipe, the described diameter diameter less than inlet segment pipe crossing water section pipe.
3. A kind of artificial wet land system being not easily blocked, it is characterised in that: the reserve feed pipe (4) added water in intake antrum it is arranged above at dividing plate (6).