Filter material for artificial wetland
A technology of artificial wetland and filter material, which is applied in aerobic and anaerobic process treatment, sustainable biological treatment, water/sludge/sewage treatment, etc. It can solve problems such as easy clogging, and achieve good anti-clogging performance and low pollution load and the effect of high hydraulic load and good growth environment
Inactive Publication Date: 2011-06-29
苏州德华生态环境科技股份有限公司
View PDF0 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, to provide a constructed wetland filter bed filter material, to solve the problem of easy clogging of traditional constructed wetlands
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The screening of the filter material of the treatment layer in the present invention is determined by the two-step experimental method of Grant filter material penetration test and sieving test, so as to meet the requirements of hydraulic parameters and gradation curves and ensure good hydraulic conditions. The invention can overcome the problem of easy blockage of traditional vertical flow artificial wetlands, ensure long-term good hydraulic conductivity, and can withstand water intake with high hydraulic load and pollution load, and has high sewage removal efficiency.
[0018] Such as figure 1 As shown, the artificial wetland filter material includes upper, middle and lower layers. The upper layer is an ecological filter material treatment layer 1 with a thickness of 40-80 cm, the middle layer is a medium gravel transition layer 2 with a thickness of 10-20 cm, and the lower layer is a layer with a thickness of 40-80 cm. The medium gravel transition layer 2 is composed...
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
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a filter material for an artificial wetland, which comprises an upper layer, an intermediate layer and a lower layer, wherein the upper layer is an ecological filter material processing layer with a thickness of 40-80 centimeters, the intermediate layer is a medium gravel transition layer with the thickness of 10-20 centimeters, the lower layer is coarse gravel drainage layer with the thickness of 20-40 centimeters, the diameter of gravels in the medium gravel transition layer is between 8 and 16 millimeters, and the diameter of the gravels in the coarse gravel drainage layer is between 16 and 32 millimeters. The filter material for the artificial wetland has the advantages of simplicity in preparation method, high efficiency in denitrification and dephosphorization, good anti-clogging performance, high pollution load and hydraulic load and the like.
Description
technical field [0001] The invention relates to an artificial wetland filter material, which belongs to the technical field of sewage treatment. Background technique [0002] At present, vertical flow constructed wetlands are widely used to treat domestic sewage and some industrial wastewater. Fill is the main component of constructed wetlands, and it is an important aspect that distinguishes constructed wetlands from natural wetlands. Vertical flow constructed wetland refers to the intermittent distribution of sewage from the sedimentation tank to the surface of the filter bed, and then vertical gravity flow downward. The filler in the filter bed provides a very suitable environment for microbial bacteria. Organic nitrogen is mineralized into ammonia nitrogen through ammonification. Under aerobic conditions, ammonia nitrogen is transformed into nitrate and nitrite through nitrification, and then anaerobic Under the condition of organic carbon source, part of denitrificati...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/30
CPCY02W10/10
Inventor 杜建强
Owner 苏州德华生态环境科技股份有限公司