Recycling device used for papermaking advanced treatment wastewater and based on chemical decalcification
A technology of chemical decalcification and advanced treatment is applied in the field of recycling devices for advanced treatment of wastewater in papermaking, which can solve the problems of recycling without advanced treatment, waste of water resources, waste water discharge, etc., so as to reduce the cost of membrane cleaning and regeneration, and reduce waste water discharge. , the effect of avoiding environmental pollution
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0063] 800 tons / day papermaking advanced treatment wastewater recycling method.
[0064] The water quality indicators of the papermaking advanced treatment wastewater were determined as shown in Table 1.
[0065] Table 1 Water quality indicators of advanced papermaking wastewater treatment
[0066] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 150 4 Chroma 100 2 SS mg / L 120 5 Ca mg / L 400 3 Conductivity μS / cm 1600 6 hardness mmol / L 9.9
[0067] (1) Chemical decalcification
[0068] After the papermaking biochemical treatment, the effluent from the secondary sedimentation tank (that is, the papermaking advanced treatment wastewater) flows into the primary decalcification reaction tank 11 through the pipeline, and first adds an appropriate amount of lime saturated solution to adjust the pH value to 8.5 through the dosing device under stirring to remove fa...
Embodiment 2
[0084] 5000 tons / day papermaking advanced treatment wastewater recycling method.
[0085] The water quality indicators of the papermaking advanced treatment wastewater have been determined and are shown in Table 3.
[0086] Table 3 Water quality indicators of advanced papermaking wastewater treatment
[0087] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 100 4 Chroma 150 2 SS mg / L 120 5 Ca mg / L 150 3 Conductivity μS / cm 1800 6 hardness mmol / L 4
[0088] (1) Chemical decalcification
[0089] After the papermaking biochemical treatment, the effluent from the secondary sedimentation tank (that is, the papermaking advanced treatment wastewater) flows into the primary decalcification reaction tank 11 through the pipeline, and firstly adds an appropriate amount of lime saturated solution to adjust the pH value to 9 under stirring through the dosing device to ...
Embodiment 3
[0105] 20,000 tons / day papermaking advanced treatment wastewater recycling method.
[0106] The water quality index of the papermaking advanced treatment wastewater was determined as shown in Table 5.
[0107] Table 5 Water quality indicators of advanced papermaking wastewater treatment
[0108] serial number project unit measured value serial number project unit measured value 1 COD Cr mg / L 150 4 Chroma 120 2 SS mg / L 80 5 Ca mg / L 200 3 Conductivity μS / cm 1200 6 hardness mmol / L 5
[0109] (1) Chemical decalcification
[0110] After the papermaking biochemical treatment, the effluent from the secondary sedimentation tank (that is, the papermaking advanced treatment wastewater) flows into the primary decalcification reaction tank 11 through the pipeline, and firstly adds an appropriate amount of lime saturated solution to adjust the pH value to 9.5 under stirring through the dosing device to remove false ...
PUM
Property | Measurement | Unit |
---|---|---|
pore size | aaaaa | aaaaa |
electrical resistivity | 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