Artificial wetland system taking oyster shell-waste brick-zeolite as composite filler

A technology of constructed wetland system and composite filler, which is applied in the field of water pollution control, can solve the problems of inhibiting the growth of plants and microorganisms, and increasing the pH value of the effluent of the system, and achieves the effects of being conducive to degradation, enhancing processing capacity and optimizing operating conditions.

Inactive Publication Date: 2013-09-18
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong alkalinity of sea oyster shells (pH=9-10), completely using sea oyster shells as artificial wetland fillers will lead to an increase in the pH value of the system effluent, and will inhibit the growth of plants and microorganisms in the wetland system

Method used

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  • Artificial wetland system taking oyster shell-waste brick-zeolite as composite filler
  • Artificial wetland system taking oyster shell-waste brick-zeolite as composite filler

Examples

Experimental program
Comparison scheme
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specific Embodiment approach 1

[0031] Embodiment 1: The sewage is pumped into the constructed wetland pool body 1 by the water inlet pump, and the water is uniformly distributed on the surface of the soil layer 2 through the branch-shaped perforated water distribution pipe 5, and then the sewage flows through the sea oyster shell-waste brick-zeolite composite filler layer 3 It is collected into the water collection area 7 through the deflector 6, and finally the outlet water is discharged through the outlet pipe 8, and the outlet water level in the constructed wetland system can be adjusted through the outlet pipe 8.

specific Embodiment approach 2

[0032] Specific implementation mode two: combination figure 1 and figure 2 To illustrate this embodiment, the patent of the present invention includes a vertical subsurface flow constructed wetland model. The system packing layer includes an upper layer and a lower layer (namely, the soil layer 2 and the sea oyster shell-waste brick-zeolite composite packing layer 3), and the upper layer is 10-20 cm Thick soil layer 2 (local red soil in Fujian, mixed with river sand and humus), sieved; the lower layer is 50-100 cm thick oyster shell-waste brick-zeolite composite filler layer 3, particle size range: 5- 30 mm. The filler filling method is "mixed positive and negative particle sizes" with large particle size distribution difference. The particle size of the upper filler is the smallest.

specific Embodiment approach 3

[0033] Specific implementation mode three: combination figure 1 and figure 2 This embodiment is described. In this embodiment, an outlet pipe 8 is provided in the constructed wetland system. The outlet pipe 8 can create an unsaturated layer and a saturated layer in the sea oyster shell-waste brick-zeolite composite filler layer 3 in the system by adjusting the water level. Layer, so as to realize the effective synergy of aerobic ammonium oxidizing bacteria, nitrite oxidizing bacteria, anammox oxidizing bacteria and denitrifying bacteria, enrich the way of nitrogen removal in the system, and greatly improve the ammonia nitrogen removal efficiency of the patent of the present invention.

[0034] Specific implementation mode four: combination figure 1 and figure 2 Describe this embodiment. In this embodiment, a branch-shaped perforated water distribution pipe 5 is arranged on the surface of the soil layer 2 of the constructed wetland. The setting of the branch-shaped perforat...

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Abstract

The invention discloses an artificial wetland system taking oyster shell-waste brick-zeolite as composite filler. The invention relates to a sewage treatment device, and discloses an artificial wetland ecological treatment device applicable to the treatment of various sewages such as domestic wastewater, livestock and poultry breeding wastewater and landfill leachate. The system disclosed by the invention comprises a vertical undercurrent artificial wetland device and wetland filler, wherein the wetland filler is implemented in a large particle size grading difference 'obverse and reverse particle size mixing' filling mode and taking oyster shell, waste bricks and zeolite which are large in specific surface area, good in nitrogen and phosphorus adsorption capacity and high in volume of organism holding, so that the sustainable, efficient and stable operation of an artificial wetland ecosystem is ensured. The artificial wetland system disclosed by the invention has the advantages of low cost, low energy consumption, high nitrogen and phosphorus removal efficiency, small land-occupied area, simple structure, convenient operation management and the like, is not easy to jam, and can be combined with ecological construction and urban greening functions.

Description

technical field [0001] The patent of the present invention relates to a constructed wetland sewage treatment system using sea oyster shells-waste bricks-zeolite as composite fillers. It belongs to the field of water pollution control. Background technique [0002] Constructed wetland sewage treatment system is a kind of sewage treatment technology developed in the 1970s. Because of its good treatment effect, low construction and operation costs, and easy maintenance and management, it has been widely valued by all countries in the world. It has become a fast-growing technology in recent years. A new technology for sewage treatment. Constructed wetland sewage treatment system, as a new type of ecological restoration technology for polluted water bodies, has been widely used in the treatment of various polluted water bodies (eutrophic water bodies, landfill leachate, livestock and poultry breeding wastewater, food wastewater, etc.). [0003] Constructed wetlands are mainly c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 刘超翔王振朱葛夫
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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