Recycling treatment method for salt-containing wastewater
A technology for saline wastewater and treatment methods, which is applied in the field of resource treatment of saline wastewater, can solve the problems of wasting production capacity of bipolar membrane electrodialysis equipment and the complexity of control process, and achieve convenient operation control process and pretreatment work High efficiency and reduction of processing costs
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0019] A chemical company in Shanghai used ion exchange to desalinate surface water to produce water for production. According to long-term observation, the content of heavy metal ions and suspended solids in the by-product saline wastewater is relatively small, and the typical composition of the water sample is: Na + 158.48±50 mmol / L, Ca 2+ 21.764±15 mmol / L, Mg 2+ 7.83±5 mmol / L, SO 4 2- 2.92±2 mmol / L, NO 3 - 1.22±1 mmol / L, Cl - 222.50±70 mmol / L, silicon content (as SiO 2 meter) is 1.15±1 mmol / L; alkalinity (HCO 3 - and CO 3 2- ) is 1.84±1.5 mmol / L; UV 254 is 1.857; the pH of the system is 7.10; the conductivity is 20±5 ms / cm.
[0020] The first step is preprocessing. The saline wastewater from the plant's neutralization tank is directly pumped into a conventional electrodialyzer filled with monovalent selective separation membranes (Japan, SELEMION membrane, monovalent selective positive membrane CSO and monovalent selective negative membrane ASV) . Each elect...
Embodiment 2
[0024] A chemical company in Sichuan used reverse osmosis to desalinate surface water to produce water for production. According to long-term observation, the content of heavy metal ions and suspended solids in the by-product saline wastewater is relatively small, and the typical composition of the water sample is: Na + 65±15 mmol / L, Ca 2+ 2.4±1 mmol / L, Mg 2+ 0.5±0.3 mmol / L, SO 4 2- 3.3±2 mmol / L, NO 3 - 2.9±1 mmol / L, Cl - 72.7±20 mmol / L, silicon content (as SiO 2 meter) is 1.5±0.5 mmol / L; alkalinity (HCO 3 - and CO 3 2- ) is 4.5±1.5 mmol / L; UV 254 is 1.729; the pH of the system is 7.10; the conductivity is 10.5±2 ms / cm.
[0025] The first step is preprocessing. The waste water produced by the pure water production process is directly pumped into a conventional electrodialyzer filled with monovalent selective separation membranes (Japan, SELEMION membrane, monovalent selective positive membrane CSO and monovalent selective negative membrane ASV). Each electrodialy...
PUM
Property | Measurement | Unit |
---|---|---|
current efficiency | aaaaa | aaaaa |
current efficiency | aaaaa | aaaaa |
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, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com