Method and device for removing and recycling nitrogen and phosphorus in biogas slurry
A biogas slurry and solution technology, applied in the field of water treatment, achieves the effects of stable treatment effect, simple and easy process, and low economic cost
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0037] The present invention will be further described in detail below in conjunction with specific embodiments.
[0038] 1. A method to remove and recycle nitrogen and phosphorus in the biogas slurry, the process flow is as follows figure 1 As shown, including the following steps:
[0039] 1) Struvite crystallization: first adjust the pH value of the biogas slurry with NaOH solution to 9~10, and then add MgCl to the biogas slurry 2 Solution, so that n(Mg 2+ ): n (orthophosphate)=1.3~1.4:1; stir the biogas slurry at a constant speed to produce struvite (magnesium ammonium phosphate) crystals, which eventually form a sludge-like precipitate to obtain struvite sewage Mud sedimentation and dephosphorization liquid.
[0040] Because there is a large amount of NH in the biogas slurry 4 + Nitrogen in the form and phosphorus in the form of phosphate, so a certain amount of Mg is added to it 2+ The following reaction can be caused to substantially remove nitrogen and phosphorus, especially p...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap