A method and product of sludge comprehensive disposal and phosphorus resource recovery
A phosphorus resource and sludge technology, applied in sludge treatment, water/sludge/sewage treatment, sludge treatment through temperature control, etc., can solve the problems of low phosphorus extraction efficiency and high energy consumption from sludge, and shorten production Cycle, optimization of reaction conditions, effects of avoiding obstruction
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0044] Preparation of Phosphorus Accelerator: Select agricultural and forestry solid waste straw, bagasse, wood chips, bamboo materials and industrial grade cellulose and grind them into powder with a characteristic particle size below 150 mesh through a pulverizer. Prepare phosphorus accelerator A: straw powder, hemicellulose content 42%, cellulose content 44%; phosphorus accelerator B: mixture of straw powder and sawdust powder with a mass ratio of 1:3, hemicellulose content 20%, fiber Phosphorus accelerator C: a mixture of straw powder, bagasse powder and sawdust powder at a mass ratio of 1:2:2, with a hemicellulose content of 26% and a cellulose content of 20%; phosphorus accelerator D: cellulose powder , wood powder, bamboo powder mass ratio 3:1:3 mixture, hemicellulose content 37%, cellulose content 70%.
[0045] Phosphorus accelerator-assisted thermal hydrolysis treatment: Take municipal sludge with a moisture content of 99% and mix it with phosphorus accelerators A, B,...
Embodiment 2
[0055] Preparation of phosphorus accelerator: select bark, sawdust, and xylan and grind them into powders with a characteristic particle size below 250 mesh through a pulverizer. According to the bark, sawdust and xylan mass ratio of 4:1:3 mixed evenly to obtain a phosphorus accelerator with a hemicellulose content of 80% and a cellulose content of 23%.
[0056] Phosphorus accelerator assisted thermal hydrolysis treatment: Take oily sludge with a water content of 95% and mix it with phosphorus accelerator, the total dosage is 30% of the dry weight of the sludge, and stir evenly. Heat hydrolysis treatment at 60°C, 80°C, and 100°C for 20 minutes respectively to obtain thermally hydrolyzed sludge A, B, and C.
[0057] Cyclone separation: A solid-liquid cyclone separator with a rotating speed of 200r / min and a solid-solid cyclone separator with a rotating speed of 900r / min are used in sequence, and the combined separation takes 55 minutes to obtain sludge liquid phase, organic sol...
Embodiment 3
[0065] Preparation of phosphorus accelerator: select industrial-grade cellulose and wheat bran with a particle size of 250 mesh, and mix them uniformly at a mass ratio of 6:1 to obtain a phosphorus accelerator with a hemicellulose content of 10% and a cellulose content of 90%.
[0066] Thermal hydrolysis treatment: Take municipal sludge with a moisture content of 95%, and conduct thermal hydrolysis treatment at 120°C, 160°C, and 200°C for 25 minutes by electric heating to obtain thermally hydrolyzed sludge A, B, and C.
[0067] Cyclone separation: use a solid-liquid-gas three-phase cyclone separator to separate for 30 minutes at a speed of 1000r / min to obtain sludge liquid phase, organic solid phase, and inorganic solid phase.
[0068] The organic solid phase is dehydrated and heat-dried to obtain products I, II and III with low phosphorus and high organic matter.
[0069] Phosphorus leaching and purification of inorganic solid phase: Use 0.5M nitric acid to adjust the pH of t...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size (mesh) | aaaaa | aaaaa |
| particle size (mesh) | aaaaa | aaaaa |
| recovery rate | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More