Classifications

• • 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
  • C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
• • 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
  • C02F1/5209—Regulation methods for flocculation or precipitation
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
  • C09B11/00—Diaryl- or thriarylmethane dyes
  • C09B11/04—Diaryl- or thriarylmethane dyes derived from triarylmethanes, i.e. central C-atom is substituted by amino, cyano, alkyl
  • C09B11/10—Amino derivatives of triarylmethanes
  • C09B11/24—Phthaleins containing amino groups ; Phthalanes; Fluoranes; Phthalides; Rhodamine dyes; Phthaleins having heterocyclic aryl rings; Lactone or lactame forms of triarylmethane dyes
• • 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
  • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
  • C09K11/06—Luminescent, e.g. electroluminescent, chemiluminescent materials containing organic luminescent materials
• • 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
• • 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
• • 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
  • C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2209/00—Controlling or monitoring parameters in water treatment
  • C02F2209/003—Downstream control, i.e. outlet monitoring, e.g. to check the treating agents, such as halogens or ozone, leaving the process
• • C—CHEMISTRY; METALLURGY
  • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • C02F2209/00—Controlling or monitoring parameters in water treatment
  • C02F2209/11—Turbidity
• • 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
  • C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
  • C09K2211/10—Non-macromolecular compounds
  • C09K2211/1018—Heterocyclic compounds
  • C09K2211/1025—Heterocyclic compounds characterised by ligands
  • C09K2211/1029—Heterocyclic compounds characterised by ligands containing one nitrogen atom as the heteroatom

Definitions

• the invention is directed toward treatment of industrial wastewater.
• the invention is directed toward fluorescently tracing treatment chemicals that are added to industrial wastewater.
• the invention allows for the efficient treatment of industrial wastewater using a treatment technology such as TRASAR® technology or 3D TRASAR® technology, each available from Nalco, an Ecolab Company, 1601 West Diehl Road, Naperville, Illinois 60563.
• Wastewater, particularly industrial wastewater, can be difficult to cost-effectively treat because of its physical and chemical properties. Wastewater can be comprised of various chemical and biological species, including suspended solids. As such, there has been a long-felt but unmet need to more efficiently treat wastewater, particularly industrial wastewater.
• Rhodamine WT has been used in hydrological studies of surface water, ground water, and wastewater (Mon, J. and Flury, M., 2005, Dyes As Hydrological Tracers, Water Encyclopedia, 95-102; YSI
• the dye will overcome the obstacles presented by industrial wastewater that make it difficult to fluorescently trace treatment chemicals.
• the invention is directed toward a method for measuring concentration and optionally controlling dosage of at least one treatment chemical into industrial wastewater, the method comprising the following steps: providing the industrial wastewater; dosing the at least one treatment chemical into the industrial wastewater to create a treated industrial wastewater, wherein the at least one treatment chemical is traced with a dye; measuring the fluorescence of the treated industrial wastewater; and optionally adjusting the dosing based on the measuring; wherein the dye comprises a structure:
• Rl and R2 are independently selected from the group consisting of hydrogen, sulfonic acid, a sulfonic acid salt, carboxylic acid, a carboxylic acid salt, an ester, and an amide derivative, and wherein R3, R4, R5, R6, R7, and R8 are independently selected from the group consisting of hydrogen, a halogen, and a C1-C8 alkyl.
• the invention is directed toward a method for measuring concentration and optionally controlling dosage of at least one treatment chemical into industrial wastewater, the method comprising the following steps: providing the industrial wastewater; dosing the at least one treatment chemical into the industrial wastewater to create a treated industrial wastewater, wherein the at least one treatment chemical is traced with a dye; measuring the fluorescence of the treated industrial wastewater; and optionally adjusting the dosing based on the measuring; wherein the dye is selected from the group consisting of Rhodamine WT, Sulforhodamine B, Rhodamine B, and combinations thereof.
• FIG. 1 is a bar graph showing variation in fluorescence emission of the invention when dosed into several industrial wastewater samples versus the control sample;
• FIG. 2 is a bar graph showing variation in fluorescence emission of the invention when dosed into several flocculant samples versus the control sample;
• FIG. 3 is a bar graph showing variation in fluorescence emission of the invention when dosed into several coagulant samples versus the control sample;
• FIG. 4 is a bar graph showing variation in fluorescence emission of the invention when dosed into samples with varying pH versus the control sample.
• FIG. 5 is a bar graph showing variation in fluorescence emission of the invention when dosed into samples having other potential interference (surfactant, oil, hardness, etc.) versus the control sample.
• the invention is to dose treatment chemicals that are traced with at least one rhodamine dye into industrial wastewaters and raw waters.
• the rhodamine dye may comprise a chemical having the chemical structure illustrated in the Summary of the Invention.
• the rhodamine dye can be used as an inert tracer chemical in industrial wastewaters.
• the invention overcomes issues related to interference caused by conditions that are traditionally found in raw water and industrial wastewater, such as the presence of certain contaminants and treatment chemicals, and particularly certain contaminants and treatment chemicals present at relatively high
• the invention can provide the ability to monitor and control the dosage of coagulants and/or flocculants online and in real time using TRASAR or 3D TRASAR technology, or similar technology, which is a long-felt but unmet need in the industry.
• the ability to automate such treatment can improve the efficiency and reduce total cost of operation of raw water and/or industrial wastewater treatment systems, meeting the industry's need.
• the invention at hand can be used to improve effluent quality for regulatory compliance and system stability.
• the invention can also allow for more accurate chemical dosing for performance optimization and alarms on system issues, such as pump failures and empty chemical tanks, thereby reducing system upsets.
• the invention can be used in various wastewater automation processes, such as dissolved air flotation ("DAF”) automation and clarification dosage optimizing.
• DAF dissolved air flotation
• a wastewater treatment plant can take on various embodiments.
• the plant will typically comprise various treatment stages in sequence: primary treatment; secondary treatment; tertiary treatment; sludge stabilization; sludge thickening; and sludge dewatering.
• An industrial wastewater treatment plant can have some or all of the stages of the typical wastewater treatment plant.
• a screen is firstly used to remove large debris and particles, and a dissolved air flotation ("DAF") device or clarifier is then used to separate suspended solids.
• DAF dissolved air flotation
• Treatment chemicals such as coagulant, flocculant, and possibly heavy metal removing reagents, are usually added to treat primary wastewater.
• Treatment chemicals such as coagulant, flocculant, or membrane flux enhancers, are added in the effluent of biological systems to separate the solids generated by the biological systems.
• a clarifier, a DAF, a membrane, a filter system, or some combination of one or more of these is used to separate the solids generated in the secondary treatment.
• tertiary treatment includes chemical oxidation of persistent contaminants or adsorption of pollutants using sorbents like activated carbon.
• Treatment chemicals used in tertiary treatment include oxidants, such as hydrogen peroxide.
• oxidants such as hydrogen peroxide.
• the final effluent after tertiary treatment is either discharged to surface water or recycled back to plant processes.
• sludge (solids) separated in primary treatment and secondary treatment is combined for further treatments to remove residual water from solids.
• Sludge stabilization using anaerobic digesters and sludge thickening are the pretreatment steps before sludge dewatering.
• flocculant coagulant as well in some cases
• a sludge dewatering device such as a belt press or centrifuge.
• the dye is selected from the group consisting of Rhodamine WT, Sulforhodamine B, Rhodamine B, and combinations thereof. In a preferred embodiment, the dye is Rhodamine WT.
• the method is performed automatically via feedback control.
• a preferred embodiment incorporates TRASAR or 3D TRASAR technology, available from Nalco, an Ecolab Company, 1601 West Diehl Road, Naperville, Illinois 60563, www.nalco.com.
• the dye is essentially inert.
• the treatment chemical may comprise a coagulant, a flocculant, both a coagulant and a flocculant, or some combination of multiple coagulants and/or flocculants.
• the method may additionally comprise the step of measuring turbidity of the industrial wastewater and/or raw water. If so, then the method may additionally comprise the step of correcting the measuring the fluorescence for the measured turbidity. The method may additionally comprise the step of adjusting the dosing based on the corrected measured fluorescence.
• Rhodamine WT Rhodamine WT
• the following samples were prepared and tested for fluorescence emission at a controlled concentration of RWT. Once the samples were prepared, the fluorescence emission spectra of each sample was collected at the appropriate excitation wavelength, 510 nm. The final step of the procedure was to calculate the accumulative fluorescence intensity over the emission range.
• the graphs illustrated in FIGs. 1-5 show the experimental results.
• the "RWT only" is the control sample.
• the graphs illustrate that less than 20% variation in the fluorescence intensity was observed between the control sample and all wastewater samples, which is an acceptable range in the industry.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Hydrology & Water Resources (AREA)
• Environmental & Geological Engineering (AREA)
• Water Supply & Treatment (AREA)
• Materials Engineering (AREA)
• Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
• Separation Of Suspended Particles By Flocculating Agents (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=49113121

Family Applications (1)

Country Status (9)

Families Citing this family (11)

Citations (4)

Family Cites Families (10)

• 2012
  • 2012-03-09 US US13/416,272 patent/US20130233804A1/en not_active Abandoned
• 2013
  • 2013-02-25 TW TW102106498A patent/TW201348702A/zh unknown
  • 2013-03-05 AR ARP130100727A patent/AR090258A1/es unknown
  • 2013-03-08 EP EP13757033.9A patent/EP2822898A4/en not_active Withdrawn
  • 2013-03-08 CA CA2862669A patent/CA2862669A1/en not_active Abandoned
  • 2013-03-08 BR BR112014019599A patent/BR112014019599A8/pt not_active IP Right Cessation
  • 2013-03-08 WO PCT/US2013/029812 patent/WO2013134617A1/en not_active Ceased
  • 2013-03-08 CN CN201380010766.1A patent/CN104136380A/zh active Pending
  • 2013-03-08 AU AU2013229963A patent/AU2013229963A1/en not_active Abandoned

Patent Citations (5)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events