Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
  • C09K3/00—Materials not provided for elsewhere
  • C09K3/32—Materials not provided for elsewhere for absorbing liquids to remove pollution, e.g. oil, gasoline, fat
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F1/00—Treatment of water, waste water, or sewage
  • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
  • C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
  • C02F1/56—Macromolecular compounds
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
  • B01D17/02—Separation of non-miscible liquids
  • B01D17/04—Breaking emulsions
  • B01D17/047—Breaking emulsions with separation aids
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
  • B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
  • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
  • B03D3/00—Differential sedimentation
  • B03D3/02—Coagulation
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F1/00—Treatment of water, waste water, or sewage
  • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
  • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
  • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K3/00—Use of inorganic substances as compounding ingredients
  • C08K3/16—Halogen-containing compounds

Definitions

• coagulants for the flocculation of suspended solids from aqueous solutions.
• Many coagulants are known including alum, aluminum sulfate, ferric chloride, ferric sulfate and lime.
• Commonly used polyelectrolytes for this purpose include polydimethyl (pDMDAAC) and Epi-DMA polyamine.
• Blends of the inorganic coagulants with polyelectrolytes are known in the art . These blends combine the desirable properties of each component in the system to be treated without the need of feeding two separate additives at different points in the system. This presents a cost advantage in many circumstances and greatly simplifies treatment for many systems.
• United States Patent No. 5,035,808 teaches the blending of commercial grade solutions of ferric salts and cationic polymers .
• Commercial grade ferric sulfate solution can be blended with either polyamine or p-DMDAAC to form stable products.
• Each group of polyelectrolyte has its own set of unique properties that it brings to the blend of polymer and inorganic coagulant. It would be very desirable to be able to combine the benefits of ferric chloride with those of p-DMDAAC in a composition that could be added as a single component to treat water systems.
• composition according to the present invention comprises FeCl 3 and a dialkyl diallyl ammonium polymer, where the FeCl 3 has been diluted with water prior being mixed with the polymer.
• the process according to the present invention for the production of a composition comprises the dilution of a FeCl 3 solution with water and the subsequent addition of a dialkyl diallyl ammonium polymer.
• a method has been discovered by the inventor to combine FeCl 3 and a dialkyl diallyl ammonium polymer to make a stable blend.
• This method consists of diluting an FeCl 3 solution with water prior to mixing with the dialkyl diallyl ammonium polymer.
• the inventor has unexpectedly discovered that if the FeCl 3 is dilute prior to the addition of dialkyl diallyl ammonium polymer, a stable blend of the two components is possible. This is a dramatic discovery and permits the addition of a single component to a system that normally required the addition of two separate additives at two separate points for an effective treatment of the system's water.
• the FeCl 3 is preferably present in the composition of the present invention in a concentration of about 0.5% to about 20% by weight active FeCl 3 , more preferably about 5% to about 16% by weight. Blends with concentrations of FeCl 3 much above 20% by weight are not stable and gel, whereas dilute blends as low as 0.5% by weight and below do not have enough FeCl 3 to cause a significant effect in the water system to be treated.
• dialkyl diallyl ammonium polymer is diluted first and then blended with the ferric chloride, stirring must be constant or the material gels. Thus, this method of preparation is less preferred. Additionally, the inventor has unexpectedly discovered that this gel, as well as the gel formed when the neat (undiluted) components are blended, can be reconstituted by dilution and agitation. However, the resulting product is not as clear and clean as when the FeCl 3 is diluted first and then blended with the dialkyl diallyl ammonium polymer.
• the present invention relates to a novel composition and process of preparation wherein a commercial grade ferric chloride (FeCl 3 ) solution can be blended with a dialkyl diallyl ammonium polymer by diluting the ferric chloride prior to addition of the dialkyl diallyl ammonium polymer.
• This commercial grade ferric chloride (FeCl 3 ) solution is preferably diluted approximately 1:1 with water, and then such diluted composition is combined with the dialkyl diallyl ammonium polymer.
• the dialkyl diallyl ammonium polymer is preferably a water-soluble C ⁇ -C 8 dialkyl diallyl ammonium polymer.
• This Ci-Cs dialkyl diallyl ammonium polymer is more preferably selected from the group consisting of polydimethyl diallyl ammonium chloride, polydiethyl ammonium chloride, polydiethyl diallyl ammonium chloride, polydimethyl diallyl ammonium bromide, and polydiethyl diallyl ammonium bromide.
• the most preferred water- soluble Ci-Cs dialkyl diallyl ammonium polymer is polydimethyl diallyl ammonium chloride (polyDMDAAC or p- DMDAAC) .
• the commercial grade ferric chloride is a FeCl 3 solution generally contains 38-42 wt% active raw material.
• the dialkyl diallyl ammonium polymer is preferably p-DMDAAC and is a 40 wt % solution.
• the ratios of these two compounds set forth below are specific to these concentrations.
• the most preferred ratios (in parts per volume) of FeCl 3 solution, water and p-DMDAAC are 10 FeCl 3 , 10 H 2 0 and 5 p-DMDAAC. When this ratio is utilized, a solution is immediately formed which remains stable for months.
• the ratios of 10 FeCl 3 and 5 p-DMDAAC are utilized, a volume of water less that ten parts can be used to obtain a relatively stable blend. However, a volume of water less that 7.5 parts should not be used. At 7.5 parts the resultant mixture immediately thickens and is hazy. This mixture is somewhat stable over time, it precipitates, but it never quite solidifies. It is thus more preferred that the volume of water be greater than 7.5 parts and as close to a 1:1 ratio with the FeCl 3 solution as possible.
• the most preferred combination in parts by volume, is 10 FeCl 3 , 10 H 2 0 and 5 p-DMDAAC.
• the preferred process for preparing the claimed composition is to add the 10 parts deionized water to the 10 parts FeCl 3 solution (a 1:1 ratio) , while mixing, in order to dilute the FeCl 3 solution. Following the water, 5 parts p-DMDAAC should be added to the mixture while stirring. A clear solution will result which does not exhibit precipitation.
• the resulting composition is an excellent coagulant for use in many applications including general wastewater, municipal wastewater, wastewater containing metals, papermaking wastewater, water containing chemical compounds, water containing biological compounds, poultry processing waste, ink containing solutions, raw surface water, oil/water mixtures, colored solutions, coal waste, oily waste, water with suspended solids raw municipal drinking water, electrolytic primer coating wastewater and industrial wastewater.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Environmental & Geological Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Hydrology & Water Resources (AREA)
• Water Supply & Treatment (AREA)
• Health & Medical Sciences (AREA)
• Medicinal Chemistry (AREA)
• Inorganic Chemistry (AREA)
• Polymers & Plastics (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Public Health (AREA)
• Materials Engineering (AREA)
• Separation Of Suspended Particles By Flocculating Agents (AREA)
• Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Processes Of Treating Macromolecular Substances (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Applications Claiming Priority (3)

Publications (2)

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• 2000
  • 2000-04-12 EP EP00922091A patent/EP1109874A4/de not_active Withdrawn
  • 2000-04-12 JP JP2000612397A patent/JP2003508548A/ja active Pending
  • 2000-04-12 AU AU42328/00A patent/AU4232800A/en not_active Abandoned
  • 2000-04-12 CN CN00800622A patent/CN1302320A/zh active Pending
  • 2000-04-12 WO PCT/US2000/009725 patent/WO2000063316A1/en not_active Ceased
  • 2000-04-12 BR BR0006074-7A patent/BR0006074A/pt not_active Application Discontinuation
  • 2000-04-12 KR KR1020007014491A patent/KR20010072626A/ko not_active Withdrawn
  • 2000-04-12 CA CA002335715A patent/CA2335715A1/en not_active Abandoned
  • 2000-04-18 AR ARP000101812A patent/AR023538A1/es unknown
  • 2000-12-19 NO NO20006490A patent/NO20006490L/no not_active Application Discontinuation
  • 2000-12-20 ZA ZA200007702A patent/ZA200007702B/en unknown

Patent Citations (3)

Non-Patent Citations (1)

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