Treatment system and treatment method for membrane concentrated solution of landfill leachate
A technology of landfill leachate and treatment system, which is applied in the field of membrane concentrate treatment system, can solve the problems of high ammonia nitrogen, high sulfate radical concentration and high concentration of refractory organic matter
Active Publication Date: 2022-04-12
JIANGSU KUNYI ENVIRONMENTAL ENG CO LTD
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The natural defect of the membrane concentrate recharge process is that pollution factors such as refractory organic matter, ammonia nitrogen, and inorganic salts (especially the large amount of sulfate added in the DTRO process) will gradually increase over time, resulting in a vicious circle
[0004]
The membrane concentrate of landfill leachate has the characteristics of high concentration of refractory organic matter, high ammonia nitrogen, high hardness, high sulfate concentration, and poor biodegradability.
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 1
[0064] In this example, ruthenium-iridium-tantalum-platinum-tin-coated anodes and ordinary titanium cathodes are used to treat wastewater with an initial COD of 10,000 mg / L. For the results, see figure 2 . Among them, y=-40.979x+10056 of the ruthenium iridium tantalum platinum tin five-element coating anode, R 2 = 0.9996.
Embodiment 2
[0068] In this example, the wastewater with an initial COD of 10000mg / L is treated by using a titanium-based palladium-copper coated cathode and a ruthenium-iridium-tantalum-platinum-tin-coated anode with a five-component coating. For the results, see image 3 . Among them, y=-43.19x+10231 of titanium-based palladium-copper coated cathode, R 2 = 0.9985.
Embodiment 3
[0072] In this example, a titanium-based palladium-copper coated cathode and a ruthenium-iridium-tantalum-platinum-tin-coated anode are used to treat wastewater with an initial nitrate nitrogen of 1000 mg / L. For the results, see Figure 4 . Among them, y=-4.1489x+1002.3 of titanium-based palladium-copper coated cathode, R 2 = 0.9991.
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 |
Login to View More
Abstract
The invention provides a treatment system and a treatment method for a membrane concentrated solution of landfill leachate. The device comprises a pretreatment device, a filter pressing device, a multi-medium filtering device and an electrocatalytic oxidation reduction device, the pretreatment device is connected with the filter pressing device and the multi-medium filtering device, and the multi-medium filtering device is connected with the electrocatalytic oxidation reduction device; the pretreatment device comprises an acid regulation area, a coagulation area, a seed crystal softening area, a calcium removal area and an aeration area; and the anode of the electrocatalytic oxidation reduction device is a titanium-based ruthenium-iridium-tantalum-platinum-tin electrode. According to the method, the DTRO membrane concentrated solution generated in a reduction project can be treated in a full-quantitative manner, and the problem that the water quality of the landfill leachate is continuously deteriorated due to continuous recharge of the membrane concentrated solution is solved.
Description
technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment system and method for membrane concentrate of landfill leachate. Background technique [0002] As my country's urbanization process accelerates, the urban population and scale increase rapidly, and the amount of domestic waste generated increases accordingly. Landfilling is currently the most conventional disposal method. In the process of disposing of domestic waste, landfill leachate will be produced. It is a kind of organic wastewater with high pollution degree and complex composition. At present, the reduction process is basically used in the treatment of landfill leachate. In chemical engineering, the DTRO process is generally used for treatment, but this process will produce a more difficult-to-handle membrane concentrate during the treatment process. [0003] Membrane concentrate of landfill leachate refilling landfill is the most commonly used concen...
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): C02F9/06C02F103/06
CPCY02W10/10
Inventor 李方越谢军英陈晨
Owner JIANGSU KUNYI ENVIRONMENTAL ENG CO LTD