Sludge resource utilization process and system
A technology of recycling and sludge, applied in sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of large area, serious environmental pollution of coal, and large energy consumption.
Active Publication Date: 2019-04-05
广西新嘉源环保科技有限公司
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the existing sludge carbonization technology is not mature enough, and there are many problems such as high cost, low treatment efficiency, low thermal efficiency, large energy consumption, large floor area, high equipment loss, and large odor release.
Moreover, the existing sludge carbonization process uses coal or natural gas for heating, and the use of coal causes serious environmental pollution, while the use of natural gas is more costly
Daily production and life will also produce a large amount of biomass waste, which is also in urgent need of treatment. Currently, sludge and biomass waste are treated separately, and other resources will be consumed during the treatment process
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
[0019] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.
[0020] The invention relates to a sludge resource utilization process, which includes: first-stage drying, and the sludge with a water content of 60% to 100% is transferred to a first-stage rotary dryer with a breaking shaft through a launder for internal drying. Dry for 15 minutes to reduce the water content of the sludge to 20-50%, and the heat balance is about 600,000 kcal / hour; second-stage drying, the sludge after the first-stage drying is sent to the belt dryer by a shaftless screw conveyor. The secondary dryer with loose shafts is further dried to reduce the water content of the sludge to 2-20%, the particle size of the sludge is not greater than 5 mm, and the heat balance is about 360,000 kcal / hour; carbonization, the secondary drying The dried sludge is conveyed to the carbonization machine by the screw conveyor for carbonization. The carbonizati...
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 |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a sludge recycling utilization process and a system for realizing the process. The process comprises primary drying, secondary drying, carbonization, cooling and storage. According to the process, a biomass gasifier is utilized for heat supply, sludge treatment and biomass waste treatment are realized simultaneously, energy can be saved, environment can be protected, and according to the various discharge indexes, the dust emission concentration is less than 30 mg / m<3>, the SO2 discharge value is less than 20 mg / m<3>, the oxynitride discharge concentration is less than 250 mg / m<3>, and the Ringelmann black degree reaches level 1. According to the process and the system, biomass energy is taken as a main heat source for the system, and pyrolysis gas generated by a carbonizer in operation is taken as a supplementary heat source, so that heat is supplied to a primary dryer, a secondary dryer and the carbonizer; afterheat of tail gas of the carbonizer is recycled to the secondary dryer to be reused; tail gas of the primary dryer and the secondary dryer is subjected to dedusting through a cyclone dust collector and a water curtain spraying dust collector, and is subjected to desulfurization treatment to reach the standard to be discharged.
Description
technical field [0001] The invention relates to the field of resource recovery and treatment, in particular to a process and system for resource utilization of sludge. Background technique [0002] Industrial wastewater, domestic sewage, and even waterworks will produce a large amount of sludge. By the end of 2015, China's annual sludge output reached 7.77 million tons, and all of this sludge needs to be treated. Sludge treatment is a process of reducing, stabilizing and harmless sludge such as concentration, conditioning, drying, stabilization, drying or incineration. There are three traditional sludge treatment methods: incineration, landfill and resource utilization. Incineration technology is mostly used in foreign countries, but the investment is huge and it is easy to cause air pollution; landfill is mostly used in China, but it needs to occupy a large amount of land and will cause secondary pollution to the environment; This method has been adopted for a long time. ...
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): C02F11/00C10B53/00B01D39/16
CPCB01D39/16B01D2239/10C02F11/00C10B53/00
Inventor 汤伟平
Owner 广西新嘉源环保科技有限公司