CN212293001U

CN212293001U - Light high-porosity plant filter bed device for sewage treatment

Info

Publication number: CN212293001U
Application number: CN201921961917.2U
Authority: CN
Inventors: 王雷扬; 杨春花; 倪晓棠; 周金兰; 董玲; 郑丽君
Original assignee: Beijing Yuanlangchao Ecological Construction Co ltd
Current assignee: Beijing Yuanlangchao Ecological Construction Co ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2021-01-05
Anticipated expiration: 2029-11-14

Abstract

The utility model provides a high porosity plant filter bed device of light for sewage treatment to traditional undercurrent wetland treatment efficiency is not high, easily blocks up, the high scheduling problem of cost, provides a neotype sewage ecological treatment device, can improve wetland treatment efficiency, prevent effectively that the wetland from packing to block up, showing and reducing the wetland investment.

Description

Light high-porosity plant filter bed device for sewage treatment

Technical Field

The utility model belongs to the sewage treatment field, specific theory relates to an utilize aquatic plant and high porosity's light filler to carry out sewage purification's technique.

Background

With the development of human civilization, the development of industry and the urbanization pace are accelerated, the utilization of water resources is greatly increased, and the pollution to water is also brought. The artificial wetland is an ecological treatment technology for realizing sewage treatment by utilizing the effects of aquatic animals and plants, microorganisms and wetland fillers, realizes sewage purification and resource type through substrates, plants and microorganisms, utilizes nitrogen and phosphorus in the sewage through plant absorption, and promotes geochemical cycle. However, the existing artificial wetland has the problems of large occupied area, low pollutant degradation capability, easy blockage of wetland fillers after the operation of the wetland for several years and low water purification efficiency. Particularly, according to the survey of more than 100 artificial wetlands in operation by the U.S. environmental protection agency, almost half of wetland systems have the problems of filler blockage and treatment capacity reduction within 5 years after being put into use. Therefore, it is important to develop a new wetland purification device with high pollutant removal efficiency and blockage resistance.

Disclosure of Invention

The utility model aims to solve the problems that the traditional subsurface flow wetland occupies large area, has low pollutant degradation capability and runs for several years and the wetland is easy to block after being filled with wetland filler and the water purification efficiency is reduced.

The utility model provides a high porosity plant filter bed device of light for sewage treatment, device top are through filling the showy body planting emergent aquatic plant that has the filler, and showy body lower part is the light floatable porous filler, and the filler is inside to set up the distribution pipeline, throws the compound bacterial in the filler. Sewage is uniformly distributed on the upper part of the filler through a water distribution pipeline, uniformly flows through the ecological filler and then enters the water layer on the lower part, and absorption and degradation of pollutants are realized through the microbial action of emerging plants and plant roots and the physical, chemical and microbial action of the ecological filler, such as high specific surface area, high porosity and the like, so that the water quality purification effect is achieved, and the COD, nitrogen, phosphorus and the like in water are degraded. Through the change adjustment to the bed body water level, can realize the disturbance of packing layer, and then make the filler plug drop, reach the purpose that delays the wetland and blockked up and be convenient for to the swift clearance of plug.

The invention has the following beneficial effects:

the utility model provides a light high-porosity plant filter bed device with high treatment efficiency, blockage resistance and investment saving. The light high-porosity filler is filled in the device, the disturbance of the filler layer can be realized through the adjustment of the water level, so that the excessively thick biological film on the surface of the filler falls off and becomes thin, and the blockage is avoided. Compared with the traditional subsurface flow wetland, the floating body filled with the high-porosity filler in the planting basket at the top of the filler replaces the planting soil on the upper part of the traditional subsurface flow wetland, so that the growth of plant root systems is facilitated to enter the interior of the filler layer of the subsurface flow wetland, and the plant root systems are in contact with water and the filler layer in a larger area, thereby more fully improving the pollutant removal effect of a plant and aquatic organism purification system, being more convenient for plant harvesting management and treatment of the blockage problem of the wetland, and simultaneously reducing the use of the traditional wetland on geotechnical materials and construction technology, and reducing the engineering investment.

Drawings

FIG. 1 is a structural view of the present invention;

FIG. 2 is an analysis chart of the effect of removing COD in the sewage in the example;

FIG. 3 is an analysis chart of ammonia nitrogen removal effect of sewage in the example;

FIG. 4 is a graph showing the effect of removing total phosphorus from wastewater in examples.

Detailed Description

The utility model discloses a light super high porosity plant filter bed device for sewage treatment, the device mainly comprise parts such as water-locator (1), light high porosity filler (2), aquatic plant (3), planting basket (4), floater (5), water collecting system (6) and barrier layer (7).

In the embodiment, tail water of a sewage treatment plant in a certain market is used as inlet water, the CODcr concentration of the inlet water is 20-50 mg/L, the ammonia nitrogen concentration is 0.4-1.5 mg/L, and the total phosphorus concentration is 0.05-0.15 mg/L. The treatment capacity was 10m³H, the area of the device is 45m². 32 plants/m of cattail or iris pallida emergent aquatic plants are planted in the plant filter bed²And the hydraulic power stays for 5-6 days.

After the device runs stably, the quality of inlet and outlet water is monitored, the COD (chemical oxygen demand) of the outlet water is reduced to be below 30mg/L, the concentration of ammonia nitrogen is reduced to be below 1mg/L, and the total phosphorus concentration is less than 0.1mg/L, which is shown in attached figures 2, 3 and 4 in detail.

Claims

1. The utility model provides a high porosity plant filter bed device of light for sewage treatment which characterized in that includes water distributor (1), high porosity filler of light (2), aquatic plant (3), plants basket (4), floater (5), water collecting system (6) and barrier layer (7) part and constitutes.

2. The lightweight high porosity plant filter bed apparatus for wastewater treatment as set forth in claim 1, wherein: the light high-porosity filler (2) has high porosity and can float on the water surface to form a filler layer.

3. The lightweight high porosity plant filter bed apparatus for wastewater treatment as set forth in claim 1, wherein: the floating body (5) is positioned at the upper part of a packing layer formed by the light high-porosity packing (2), and a planting basket (4) is arranged in the floating body.

4. The lightweight high porosity plant filter bed apparatus for wastewater treatment as set forth in claim 1, wherein: aquatic plants (3) are planted in the planting basket (4), and root systems of the aquatic plants (3) can penetrate through the bottom of the planting basket (4) and contact with the filler layer downwards.