Plant carbon source based novel composite artificial wetland system and application thereof

A technology of constructed wetland system and plant carbon source, which is applied in the field of deep treatment of nitrogen and phosphorus in low-pollution water in the plant carbon source-based new composite constructed wetland system, which can solve the problems of difficult carbon source supplementation and high cost of constructed wetlands, and reduce operation and maintenance costs , easy management, and the effect of removing COD

Pending Publication Date: 2022-03-08
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of difficult carbon source supplementation and high cost in constructed wetlands, the present invention discloses a new type of plant carbon source-based composite constructed wetland system and treatment method for economically and efficiently removing nitrogen and phosphorus in low-pollution water

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Plant carbon source based novel composite artificial wetland system and application thereof
  • Plant carbon source based novel composite artificial wetland system and application thereof
  • Plant carbon source based novel composite artificial wetland system and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] refer to figure 1 As shown, a plant carbon source-based new composite constructed wetland system includes two parts: a constructed wetland filler layer and a plant layer. The filler layer includes a filler bed and drainage pipes. The plant system, in which the filler layer is located at the lower part of the constructed wetland system, only accounts for half of the entire constructed wetland system, of which:

[0035] The packing layer is divided into two parts, and a coarse gravel layer and a zeolite layer are respectively laid from bottom to top as a supporting layer and a main reaction layer. The packing layer from bottom to top is a coarse gravel layer with a filling height of 5cm and a zeolite layer with a filling height of 25cm; the diameter of the coarse gravel is 1-2cm, and the diameter of the zeolite is 4-8mm.

[0036] The water distribution pipe is arranged on the upper part of the plant root system, and the water distribution holes are evenly distributed to ...

Embodiment 2

[0039] Such as figure 2 As shown, a plant carbon source-based new composite constructed wetland system includes two parts: a constructed wetland filler layer and a plant layer. The filler layer includes a filler bed and drainage pipes. plant system.

[0040] The planting density in the plant system is about 300-400 plants / m 2 The yellow calamus used PVC pipe as a plant growth fixer, and the root system was inserted into the small hole at the bottom of the PVC pipe. All the other are with embodiment 1.

[0041] The operating method of the present invention is basically the same as that of Embodiment 1, the difference is that the plant in the plant system is a calamus with short and thick rhizomes, tall plants, and dense leaves, which belongs to emergent perennial herbaceous plants, and the sewage is input from the upper part of the plant carbon source base. Constructed wetland system, the effluent is discharged from the drainage pipe through the U-shaped pipe to the water l...

Embodiment 3

[0043] A method for operating a plant carbon source-based novel composite constructed wetland system, comprising:

[0044] Adopt a kind of plant carbon source base novel composite constructed wetland system of embodiment 1;

[0045] (1) During the start-up period of the system, the anaerobic sludge from the sewage treatment plant is inoculated in the filler layer, which greatly shortens the start-up period of the constructed wetland.

[0046] (2) The Hoagland's solution is introduced into the plant culture system for a certain period of time to maintain the normal growth of the plants.

[0047] (3) Use a peristaltic pump to fill the matrix area with sewage through the water distribution pipeline in the water intake area. The continuous flow operation mode is adopted, and the hydraulic retention time of the constructed wetland is set to 36 hours. A part of the ammonia nitrogen passes through the plant root area and is absorbed by the plant root system as The other part of the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a plant carbon source based novel composite constructed wetland system and application thereof, a plant culture system is constructed on the upper layer of a packed bed, the upper layer water space is fully utilized, and a carbon source is provided for heterotrophic denitrifying bacteria through plant root secretion and self metabolism so as to improve the denitrification rate and maintain the durability of the denitrification performance of a constructed wetland. The system is composed of a traditional constructed wetland packed bed and a plant culture system, a downstream running mode is adopted, one part of ammonia nitrogen is absorbed by plant root systems through a plant root system area to serve as nutrients for growth of the plant root systems, the other part of ammonia nitrogen is converted into nitrate nitrogen through nitrification, and the plants secrete the nitrate nitrogen through the root systems to provide a carbon source for denitrification. And the operation cost is effectively reduced. Meanwhile, only half of the filler is used for filling the whole packed bed, so that the structure is simple, the management is convenient, the cost of wetland construction is reduced, and the application prospect is relatively high.

Description

technical field [0001] The invention relates to the field of advanced sewage treatment, in particular to a method and application for advanced treatment of nitrogen and phosphorus in low-pollution water using a plant carbon source-based novel composite constructed wetland system. Background technique [0002] In recent years, with the strengthening of lake governance in my country and the introduction of new concepts of lake governance, the pollution problems caused by low-pollution water have attracted more and more attention. A new challenge. Low-pollution water has a large amount of water, unstable discharge, low carbon-nitrogen ratio, and very difficult to remove TN, including tail water that has been treated by sewage treatment facilities but is still a source of pollution, surface runoff, farmland drainage with low pollutant concentration, and village surface in rainy seasons. Runoff etc. [0003] Constructed wetlands, as a typical natural treatment technology that ut...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34C02F3/10A01G31/02C02F101/16
CPCC02F3/32C02F3/34C02F3/101A01G31/02C02F2101/163C02F2209/08C02F2209/14C02F2209/18C02F2305/06C02F2209/22C02F2209/16C02F2203/006Y02P60/21Y02W10/10
Inventor 王鸿程刘莹王爱杰方颖珂梁斌
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap