| |
 |
|
Class Information
Number: 210/928
Name: Liquid purification or separation > Paper mill waste (e.g., white water, black liquor, etc.) treated
Description: Collection of disclosures directed to the treatment of liquid by products or effluents from a paper making operation.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7497956 |
Method for stabilizing and conditioning urban and industrial wastewater sludge |
Mar. 3, 2009 |
| 7422692 |
Raw influent treatment processes eliminating secondary biological treatment |
Sep. 9, 2008 |
| 7332095 |
Wet oxidation |
Feb. 19, 2008 |
| 7300539 |
Treatment of solid containing material derived from effluent |
Nov. 27, 2007 |
| 7267772 |
Biological process for reducing chemical and biochemical oxygen demand of pulp and paper industrial effluent |
Sep. 11, 2007 |
| 7241389 |
Oxidizing processes by oxygen transfer within a liquid medium in a reactor under pressure |
Jul. 10, 2007 |
| 7201847 |
Wastewater treatment method utilizing white rot and brown rot fungi |
Apr. 10, 2007 |
| 7070696 |
Process for flocculating suspensions |
Jul. 4, 2006 |
| 7029553 |
Urea sulfate and urea hydrochloride in paper and pulp processing |
Apr. 18, 2006 |
| 6923888 |
Process for recovering organic acids from bleaching liquors |
Aug. 2, 2005 |
| 6923912 |
Method of wastewater treatment utilizing white rot and brown rot fungi |
Aug. 2, 2005 |
| 6896806 |
Biological process for color reduction of pulp and paper effluent |
May. 24, 2005 |
| 6887382 |
System for treatment of manure |
May. 3, 2005 |
| 6843886 |
Method for handling filled reject flows in a paper or paperboard mill |
Jan. 18, 2005 |
| 6830696 |
Treatment of spent pulping liquor with lignin separation to recover alkali pulping chemicals in manufacture of paper pulp |
Dec. 14, 2004 |
| 6821384 |
Process for the treatment of fly ash, using hydrochloric acid |
Nov. 23, 2004 |
| 6805802 |
De-watering process |
Oct. 19, 2004 |
| 6805803 |
Process for flocculating suspensions |
Oct. 19, 2004 |
| 6793809 |
Pipe system for receiving and transporting lime sludge from a white liquor filter |
Sep. 21, 2004 |
| 6627086 |
Methods of producing polyarylamines and using them for detackifying paint and removing color from aqueous systems |
Sep. 30, 2003 |
| 6589427 |
Process for treatment of mixture of spent wash from distillery and black liquor from pulp and paper industry |
Jul. 8, 2003 |
| 6551458 |
Method and apparatus for recovering fibers from white water of paper mill |
Apr. 22, 2003 |
| 6514379 |
Procedure for arranging water circulations in integrated paper mill |
Feb. 4, 2003 |
| 6511611 |
Compositions for reducing true color in waste liquids |
Jan. 28, 2003 |
| 6491827 |
Process for reducing true color in waste liquids |
Dec. 10, 2002 |
| 6444092 |
Process of recycling fillers and coating pigments from the preparation of paper, paperboard and cardboard |
Sep. 3, 2002 |
| 6409880 |
Apparatus and process for removing fine impurities from a fibrous suspension |
Jun. 25, 2002 |
| 6372139 |
Circuit purification for the papermaking industry |
Apr. 16, 2002 |
| 6322701 |
Water treatment process |
Nov. 27, 2001 |
| 6306308 |
Inorganic composition, process of preparation and method of use |
Oct. 23, 2001 |
| 6290812 |
Method for treating process water in connection with pulp bleaching |
Sep. 18, 2001 |
| 6287471 |
Treatment of aqueous effluents by injection of carbon dioxide |
Sep. 11, 2001 |
| 6277239 |
Process for removing fine impurities from a fibrous suspension |
Aug. 21, 2001 |
| 6258279 |
Hydrophilic cationic dispersion polymer for paper mill color removal |
Jul. 10, 2001 |
| 6248207 |
Separation of solids from aqueous suspensions containing cellulosic fibers and fines |
Jun. 19, 2001 |
| 6228215 |
Method for countercurrent treatment of slurries |
May. 8, 2001 |
| 6217778 |
Anionic and nonionic dispersion polymers for clarification and dewatering |
Apr. 17, 2001 |
| 6214166 |
Process for recycling fillers and coating pigments from the preparation of paper, paperboard and cardboard |
Apr. 10, 2001 |
| 6190503 |
Process for cleaning wastewater and recirculating water in paper production, de-inking and bleaching of pulp |
Feb. 20, 2001 |
| 6190504 |
Method and arrangement for circulating water in a paper machine |
Feb. 20, 2001 |
| 6183650 |
Synthetic mineral microparticles and retention aid and water treatment systems and methods using such particles |
Feb. 6, 2001 |
| 6180079 |
Wet oxidizing process |
Jan. 30, 2001 |
| 6174410 |
Process apparatus for recovering raw materials from paper mill effluents |
Jan. 16, 2001 |
| 6174445 |
Treatment of water with polynucleate metal hydroxide compounds |
Jan. 16, 2001 |
| 6171505 |
Higher actives dispersion polymer to aid clarification, dewatering, and retention and drainage |
Jan. 9, 2001 |
| 6159381 |
Waste paper treatment process |
Dec. 12, 2000 |
| 6126837 |
Method for removing suspended particles using mannich-derived polyethers |
Oct. 3, 2000 |
| 6123856 |
Dewatering of sludges |
Sep. 26, 2000 |
| 6096215 |
Liquid bio-nutrients for use in biological wastewater treatment processes and method for using them |
Aug. 1, 2000 |
| RE36780 |
Mannich acrylamide polymers |
Jul. 18, 2000 |
|
|
|
