A method to accelerate the methanation of landfill waste
A landfill and methanation technology, which is applied in chemical instruments and methods, landfill technology, solid waste removal, etc., can solve the problems of lower system total nitrogen removal rate and lower ammonia nitrogen removal rate, etc.
Active Publication Date: 2021-04-09
GUILIN UNIVERSITY OF TECHNOLOGY
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
According to the classic biological denitrification theory, ammonia nitrogen is converted into nitrate in the nitrification stage, reducing nitrate will inevitably reduce the removal rate of ammonia nitrogen, which will lead to a decrease in the removal rate of total nitrogen in the system
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
[0023] Construct a device for accelerating the methanation of landfill waste, including fresh landfill device C and mineralized waste reaction device D. Fresh landfill device C and mineralized waste reaction device D constitute an ex-situ simultaneous nitrification and denitrification in situ Integrated denitrification device; fresh landfill device C adopts a stainless steel cylinder with a column height of 65 cm and a diameter of 34 cm. The top of the column is provided with a water inlet 1 and a gas extraction valve 2, and the top cover and the column are sealed by flanges with rubber pads. After the leachate enters, the liquid distributor 3 rotates and distributes water at a constant speed, and flows through the upper gravel layer 4 (5 cm), the domestic garbage layer (40 cm) and the lower gravel layer 6 (5 cm). The upper gravel layer 4 has the functions of buffering and redistributing water; the lower gravel layer 6 is arranged in a structure with a fine particle size and a...
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 |
|---|---|---|
| density | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a method for accelerating the methanation of landfill waste. A combination device is provided, including a fresh waste landfill device and a mineralized waste reaction device. The fresh waste landfill device is an anaerobic denitrification reaction device, and the mineralized waste reaction device is a simultaneous nitrification and denitrification reaction device. The aeration volume of the mineralized waste reaction device is controlled at 0.09~1.88 m 3 / (m 3 d), the aeration position is at the bottom of the mineralized waste reaction device, and the influent load is 35~50 L / (m 3 d), the frequency of water inflow is 1 time / d, and the particle size of the mineralized waste in the mineralized waste layer is 4-10 mm. The method of the present invention treats the leachate through the synchronous nitrification and denitrification mineralization garbage reactor, on the basis of ensuring the removal rate of ammonia nitrogen, reduces the concentration of nitrate nitrogen, and reduces the inhibitory effect on the methanogenic bacteria in the in-situ denitrification stage, thereby forming an ectopic synchronization Nitrification and denitrification in-situ denitrification bioreactor landfill technology achieves the purpose of accelerating the methanation of landfill waste.
Description
technical field [0001] The invention belongs to the technical field of environmental protection and new energy, and particularly relates to a method for accelerating the methanation of landfill garbage. Background technique [0002] Sanitary landfill is one of the main methods of domestic waste disposal in my country. However, the traditional sanitary landfill technology has problems such as long garbage stabilization time, complex leachate composition and difficult treatment, low yield of landfill gas and difficulty in recycling. In response to the problems existing in traditional sanitary landfills, in the 1970s, the bioreactor landfill technology with leachate recharge as the main control measure came into being. Bioreactor landfill mainly includes several types such as recharge type, two-phase type and denitrification type. Among them, the denitrification bioreactor landfill technology has attracted attention in the field of domestic waste landfill and leachate treatme...
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 Patents(China)
IPC IPC(8): B09B1/00B09B3/00C02F3/30C02F101/16
CPCB09B1/00B09B3/00C02F3/302C02F2101/16Y02W30/30
Inventor 孙晓杰闪慧君薛晨楠成兆文张红霞
Owner GUILIN UNIVERSITY OF TECHNOLOGY