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Flocculant for catalytic decomposition of flue gas desulfurization wastewater treatment
US12291471B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12291471-B2 |
| Application number | US-202217726561-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 22, 2022 |
| Priority date | Dec 15, 2021 |
| Publication date | May 6, 2025 |
| Grant date | May 6, 2025 |
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Abstract
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The present invention provides a flocculant for catalytic decomposition of flue gas desulfurization wastewater treatment. The flocculant includes polyacrylamide, inorganic polymer, and an inorganic compound with low molecular weight. In the condition of using proper components, the flocculant has significant wastewater treatment performance.
First claim
Opening claim text (preview).
The invention claimed is: 1. A flocculant for catalytic decomposition of flue gas desulfurization wastewater treatment comprising cationic polyacrylamide with a molecular weight of 100,000-500,000, inorganic polymer, and inorganic compound consisting of aluminum sulfate, zinc sulfate, and copper sulfate, wherein the cationic polyacrylamide is a copolymer and has a cation degree of 40-50% (mass ratio), wherein the ratio of the aluminum sulfate, the zinc sulfate, and the copper sulfate is 2:3:5. 2. The flocculant of claim 1 , wherein the cationic polyacrylamide is a copolymer of quaternary ammonium salt and acrylamide. 3. The flocculant of claim 2 , wherein the quaternary ammonium salt serving as cation monomer is represented as following formula: wherein R 1 , R 2 , and R 3 are independently or jointly selected from the group consisting of: methyl, methyl, or allyl. 4. The flocculant of claim 1 , wherein the polyacrylamide is 2.5-50 wt %, the inorganic polymer is 2.5-50 wt %, and the inorganic compound is 50-95 wt %. 5. The flocculant of claim 1 , wherein the inorganic polymer consists of poly aluminum chloride and poly ferric sulfate. 6. The flocculant of claim 5 , wherein the poly aluminum chloride and poly ferric sulfate has a weight ratio of 1:1-5:1. 7. A method for treating surface water, comprising adding 100-300 mg/L of the flocculant of claim 1 into the surface water, wherein the surface water includes, dyeing wastewater, papermaking wastewater, pharmaceutical wastewater and agricultural wastewater.
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Classifications
from the purification of gaseous effluents · CPC title
from the paper or cellulose industry · CPC title
using basic salts, e.g. of aluminium and iron · CPC title
using flocculating agents (for purifying water C02F1/52; for liquid radioactive waste G21F9/10) · CPC title
by a single or double bond to nitrogen · CPC title
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- What does patent US12291471B2 cover?
- The present invention provides a flocculant for catalytic decomposition of flue gas desulfurization wastewater treatment. The flocculant includes polyacrylamide, inorganic polymer, and an inorganic compound with low molecular weight. In the condition of using proper components, the flocculant has significant wastewater treatment performance.
- Who is the assignee on this patent?
- Univ Changzhou, Changzhou Zhenbang Chemical Mfg Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C02F1/56. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 06 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).