chemical material decolorization waste water patent

US5180497A - Method for decolorization of waste water ...

A method for the decolorization of waste water containing coloring matters comprising dyestuff and/or pigment, in which PVA is added to a waste water containing coloring matters as above mentioned so as to catch the coloring matters in the waste water into the PVA, a precipitant of the coloring matters is added to the resultant waste water so as to render the coloring matters absorbed onto the ...

Ozone Decolorization, Ozone Decolorization Suppliers and ...

Alibaba.com offers 99 ozone decolorization products. About 6% of these are petroleum additives, 6% are surfactants, and 6% are plastic auxiliary agents. A wide variety of ozone decolorization options are available to you, such as coating auxiliary agents, water treatment chemicals, and petroleum additives.

Removal of Chemical Oxygen Demand and Color from Simulated ...

The treatment of simulated textile wastewater [chemical oxygen demand (COD) = 3360 mg/L] was performed using three chemical/physicochemical processes, viz., coagulation, Fenton oxidation, and adsorption. Coagulation of the wastewater was performed in a jar test apparatus using inorganic and organic coagulants.

The Scientific World Journal - Hindawi Publishing Corporation

Therefore, decolorization and detoxification of dye-containing wastewater need to be conducted before discharging wastewater into natural water bodies [26, 27, 29]. Certain physical, chemical, and biological treatments are currently being used for dye wastewater treatment.

Decolorization of dyeing wastewater by coagulation.

Decolorization of activated dyeing wastewater by using six common inorganic coagulants and self-made decolorant was studied. Under the optimum dosage and pH for every coagulant, removal efficiency of CODCr and color, average deposition rate of floc, volume and density of sludge were compared for selection of the optimum coagulant and conditions.

Waste Brine Recycling from Sugar Decolorization

Waste Brine Recycling from Sugar Decolorization Challenge • Decolorization of cane sugar juice is mostly done by anion-exchanger • The resin removes high molecular colorants like melanin, caramels, polyphenols from sugar liquors • Molecular weight of the colorants are between 500 – 2,0000 Dalton, with a maximum of 20,000 D

US Patent for Process for reclaiming waste gas treatment ...

(a) preheating said waste aqueous solution of said gas treating chemical in an at least partial vacuum to partially vaporize the chemical solution in order to produce a product vapor, containing water vapor and some of said treating chemical, and a concentrated chemical solution containing water, remaining gas treating chemical and said impurities;

Method of decolorizing blue jeans based on client-desired ...

Sep 19, 2002· [0009] Still another purpose of the present invention is to provide a method of decolorizing blue jeans, which is capable of cutting down decolorization cost by retrieving a chemical material to be used as a treatment material in waste produced during decolorization.

US3736255A - Water decolorization - Google Patents

11. The method of claim 10 in which the waste water from the kraft pulping mill is alkaline bleach waste. 12. The method of claim 10 in which the waste water from the kraft pulping mill is acid bleach waste. 13. The method of claim 9 in which the waste water is from an acid sulfite pulping mill. 14.

Decolorization Plastic Wholesale, Plastic Suppliers - Alibaba

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Review Wet air for the decolorization of dye wastewater ...

Wet air oxidation (WAO), a liquid phase reaction between organic materials in water and oxygen, is one of the most economical and technologically viable advanced oxidation processes for wastewater treatment, particularly toxic and high organic content wastewater. WAO is the liquid phase oxida‐

Decolorization of reactive dyes by immobilized laccase ...

The public demands for color-free discharges to chemical–physical, chemical–chemical, etc. are often receiving waters have made decolorization of a vari- used. Also, the extent of the mineralization in waste ety of industrial wastes a top priority [2].

Sorbent Material Utilized (e.g ... - patents.justia.com

Once the adsorbent no longer removes the desired amount of impurities, it is regenerated for reuse. Such a continuous regenerable adsorbent refining process substantially reduces the amount of fresh water required and the amount of waste water generated to purify TAG and reduces the amount of solid waste …

(12) United States Patent (10) Patent No.: US 8,715,508 B2 ...

ing, chemical stability, carcinogenic, teratogenic and mutagenic three-induced effect. Remnants of dyeing waste water components even in Small concentrations, are dis charged into water and can slow water flow, resulting in the destruction of aquatic ecosystems. Therefore, an effective dyeing wastewater treatment has become an important issue.

Oxidative Decolorization of Acid Azo Dyes by a Mn Oxide ...

The net oxidation state of the Mn within the tailings is 3+. Decolorization of AO 7 by the Mn tailings increases with decreasing pH. The decolorization mechanism is initiated on the hydroxyl group of AO 7 and proceeds via successive electron transfers from the dye molecule to the oxide surface resulting in the asymmetric cleavage of the azo bond.

Iron-based metal organic framework, MIL-88A, as a ...

While Metal Organic Frameworks (MOFs) have been extensively investigated as photocatalysts to eliminate toxic pollutants in water, studies using MOFs as chemical oxidative catalysts to degrade contaminants are still limited.

Water and Wastewater Companies and Suppliers in USA ...

In 2017, independent water treatment solution providers Emefcy and RWL Water joined forces to create Fluence Corporation with the vision of becoming the leading global provider of fast-to-deploy, decentralized and packaged water, wastewater, seawater desalination and reuse treatment solutions.

Water and Wastewater Companies and Suppliers ...

ANDRITZ Separation, trusted partner for process solutions for waste water treatment. There is a wide range of challenges in municipal drinking water and waste water treatment: whereas in developing countries the focus is often on setting up a base structure for drinking water and wastewater, in ...

Decolorization of turbid sugar juice from sugar factory ...

Waste management of powdered activated carbon from cyclone of some sugar factories was used for decolorization of sugar mud juice (SMJ) in this study. The presence of powdered activated carbon waste (PACW) was admitted again for their use in SMJ decolorization.

Decolorization of reactive azo dyes using a sequential ...

Besides municipal wastewater, the plant also treats septic material from s, but little to no industrial wastewater. Following aeration of 1 h, the sludge was centrifuged and added (10 g l −1 ) into autoclaved minimal medium (0.5 l), of which 10 ml was added to 90 ml RV5 containing demineralized water.

DECOLORIZATION OF DYE WASTE WATER USING WASTE MATERIAL …

Normally wastewater is treated in plants to remove undesirable components which include both organic and inorganic matters, and soluble and insoluble materials. This paper presents the color removal of textile waste water containing dyes using waste material of sugar cane industry.

Ion Exchange Resins for Cane Sugar Decolorization

common choice for decolorization, gel resins can be used for decolorization in applications where very low color syrup is required, such as liquid sugar production. The less porous internal bead structure leads to efficient decolorization but also lower decolorization capacity, so gel resins are best only for polishing of low-color feed syrup.

USPTO announces 2018 Patents for Humanity winners

WASHINGTON– The United States Patent and Trademark Office (USPTO) today announced the latest winners of the Patents for Humanity program. ... Chemical and Materials Engineering; TC 2100 - Computer Architecture, Software, and Information Security ... Sanivation LLC. for designing a waste processing plant that transforms human waste into ...