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7604745 |
Water-purifying solid material made of a natural raw material containing polysaccharides as principal components, and water-purifying method using the same
A water purification solid material of relatively low cost whose handling is easy, produced from a natural raw material only; and a method of water purification with the use of the same. There is...
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7604742 |
Soil conditioning products from organic waste
A process for conversion of organic wastes into biofertilizers such as soil conditioning agents of fertilizer grade, culture grade and soil grade is provided. Also provided is a process for...
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7575685 |
Low oxygen biologically mediated nutrient removal
The present invention is directed to a substantially odorless biologically mediated treatment process for solid and liquid organic wastes. The present invention also provides for a novel nutrient...
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7550085 |
Bioventing remediation method
Bioventing methods create a bacterial treatment zone at a contaminated site by supplying a hydrocarbon food source to the treatment zone, and recirculating the hydrocarbon to the treatment zone....
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7544298 |
Apparatus and method for dispensing decomposing bacteria into a waste stream
A dispensing apparatus and method for the inoculation of a bioremediation agent into a waste stream, including but not limited to sludge or oil. The apparatus is capable of generating and...
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7544292 |
Apparatus for denitrifying wastewater
Disclosed is a method of denitrifying a solution including introducing into the solution an amount of a carbon source within a duration and at a frequency so that indigenous heterotrophic bacteria...
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7520991 |
Biological method for removing phosphorus and nitrogen from water using granulated methane-oxidizing bacteria
A biological removal method of phosphorus and nitrogen includes supplying a mixture gas into a gas holder. Inflow water and return water are supplied into the gas holder to make the mixture gas...
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7513998 |
“In-situ” ballast water treatment method
A method and system for ballast water treatment are provided. A vacuum is applied directly to an existing vent of a vessel's ballast water tank during the vessel's voyage. The applied vacuum is in...
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7497948 |
Method for remediation of soil and groundwater
A system and method to treat a site includes oxygenating or ozonating the site, adding nutrients, and maintaining a low bio-chemical-oxygen-demand-to-total-kjeldahl-nitrogen (BOD5:TKN) ratio....
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7491332 |
Method and device for physical and biological treatment of biomass
A method for the physical and biological treatment of an organic effluent, which is decomposed by microorganisms in a biological treatment zone, includes recovering a fraction of the biomass...
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7481933 |
Process to improve the efficiency of a membrane filter activated sludge system
A process for treating BOD, nitrogen and phosphorus containing wastewater, wherein the process includes providing wastewater influent into an anaerobic zone having activated sludge and mixing the...
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7476320 |
Process for groundwater remediation
A process for in situ groundwater decontamination within a subsurface region of earth includes: directing a liquid feed stream through a first conduit; injecting a treatment gas into the first...
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7473364 |
Multivalent metal ion management for low sludge processes
A method for managing multivalent metal ion concentrations in low-yield wastewater treatment processes. The method includes combining wastewater containing BOD with bacteria-laden sludge in a...
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7473363 |
Organic waste treatment
A method of treatment of sewage comprising adding at least one cell signalling chemical (CSC) to a sewage substrate, wherein the at least one CSC regulates activity of a microbial population in the...
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7470367 |
Process for removing a contaminant from contaminated groundwater
The invention relates to a process for removing a contaminant from groundwater wherein it is not necessary for groundwater to be extracted from the soil. To that end, the process according to the...
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7462480 |
Stimulation of microbial dechlorination of polychorinated biphenyls with halogenated ethenes
Disclosed is a method for the anaerobic microbial dechlorination of polychlorinated biphenyls (PCBs). Polyhalogenated ethenes are used to stimulate the growth and dechlorinating activity of PCB...
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7455774 |
Agent and method for decontaminating soil, groundwater or sediment contaminated with hexavalent chromium
It is an objective of the present invention to provide a decontaminant capable of efficiently and rapidly decontaminating soil, groundwater or sediment contaminated with hexavalent chromium, and a...
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7449114 |
Halogenated solvent remediation
Methods for enhancing bioremediation of ground water contaminated with nonaqueous halogenated solvents are disclosed. An illustrative method includes adding an electron donor for microbe-mediated...
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7445714 |
Biological processing of animal waste
There is a biological composition and method of use. Included is a microorganism quantity, and a nutrient quantity which may have a supplement, a short-term nutrient and a long term nutrient. The...
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7442305 |
Downwash process bioremediation system
Disclosed herein is a method for the removal of petroleum hydrocarbon and toxic constitutes from contaminated soils and sediment. The method comprises the removal of contaminated materials from...
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7439054 |
Bioreactor system for biological degradation of oily sludge
A 10,000 gallon sequencing batch reactor tank for the on-site bio-degradation of oily sludge. Bacteria already present in and adapted to oily sludge degrade the hydrocarbons found in oily sludge...
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7438816 |
Method for treating water containing ammonium-nitrogen
Raw water containing ammonium-nitrogen is introduced into a nitrification tank and nitrification of nitrite-nitrogen by nitrite oxidizing bacteria is inhibited according to inhibition of the...
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7438815 |
Inhibiting ammonia emissions and odors from animal wastes with oil
Lipids, such as plant oils and animal fats, are effective for treatment of animal wastes to inhibit both the emission of ammonia and other odors, and the discharge of particulate matter,...
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7438814 |
Method and apparatus for the purification of ground water
The present invention relates to a method for decreasing the contents of metals, metalloids, nitrate and nitrite, respectively, in raw water flowing through a basin ( 1 ), whereby water containing...
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7438813 |
Ammonia oxidation and pipe denitrification
In a biological wastewater treatment system, the addition of an intermittently aerated second bioreactor to accomplish ammonium oxidation to predominately nitrite and then to achieve...
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7431839 |
Low oxygen biologically mediated nutrient removal
The present invention is directed to a substantially odorless biologically mediated treatment process for solid and liquid organic wastes. The present invention also provides for a novel nutrient...
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7422687 |
Biotreatment of As-containing hydroxide sludge
The invention discloses a biotechnological process for the treatment of hydroxide sludge containing As produced in potable water production processes which use FeCI 3 as a coagulant. The process...
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7419593 |
Bioremediation mat and method of manufacture and use
Bioremediation geocomposite articles, and their method of manufacture, for treating (digesting) contaminats in soil or water. The bioremediating geocomposite mat includes a woven or non-woven...
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7413890 |
Methods for anaerobic bioremediation using solid-chemical compositions containing Mn(IV) and Fe(III)
Liquid chemical compositions are disclosed for anaerobic biodegradation, detoxification, and transformation of toxic organic and inorganic compounds in a contaminated geologic media under reducing...
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7413655 |
Method for the biological breakdown of effluent containing nitroaromatics
A method for the biodegradation of nitroaromatic-containing wastewater, including:
(a) providing activated sludge as biological matrix, (b) adding a nitroaromatic-degrading microorganism to...
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7407583 |
In-situ groundwater nitrification and de-nitrification remediation system
A method of in-situ groundwater nitrification, by: extracting groundwater from the ground; adding oxygen to the extracted groundwater; adding nutrients to the extracted groundwater; and injecting...
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7407581 |
Biodegradation of oxyanions such as perchlorate on ion exchange resins
Improved systems and methods for removing the load of perchlorate and other oxyanions off of ion exchange resins through bioregeneration are disclosed. The improved systems and methods rely upon...
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7404897 |
Method for nitrogen removal and treatment of digester reject water in wastewater using bioaugmentation
An efficient system and process for removing nitrogen from wastewater while enriching seed sludge in the mainstream treatment process. Bioaugmentation of seed autotrophic organisms facilitate the...
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7396466 |
Method and system for filtration of wastewater
A system ( 10 ) comprising multiple units ( 40 a - 40 h ) and method for filtration of wastewater ( 20 ) is disclosed. Simultaneous denitrification of a single filter unit and normal filtration of...
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7384556 |
Methods of enhancing biodegradation of groundwater contaminants
Systems and methods for co-enhancing contaminant degradation such as LNAPL and DNAPL degradation. Embodiments of the inventive technology may relate to assuring adequate amounts (e.g.,...
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7341664 |
Method for forming an in situ groundwater filter
A method and system for forming an in situ subsurface filter in a contaminated aquifer and for removing contaminants from groundwater drawn from a contaminated aquifer. The filter is produced in...
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7335303 |
Zero-discharge of water glass effluents by alkaline biotreatment techniques
The present invention relates to the collection of alkalophilic/alkaline-tolerant microbes and use of said microbes in water glass wastewater treatment. The wastewater is treated directly with...
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7329349 |
Water treatment
In accordance with the principles of the present invention, methods and apparatuses are provided for practically complete removal of one or more electron acceptors (excluding oxygen) from waters of...
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7318896 |
Method and apparatus for utilization of recovered magnesium ammonium phosphate
A method utilizing inorganic nutrient salts, which are inexpensive and easily usable, for waste water whose aerobic and/or anaerobic biological treatment cannot be established unless inorganic...
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7306732 |
Treatment of water
A process ( 10 ) for treating sulphate-containing water ( 28 ) includes feeding the water into a biological sulphate reduction stage ( 12 ) containing a complex carbon source ( 18 ). The water is...
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7300583 |
Apparatus and method for remediation of a waste stream
The present invention provides a dispensing apparatus and method for the delivery of remediation agents into waste systems wherein the apparatus is capable of generating and maintaining a...
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7294273 |
Process for treatment of organic contaminated water
The present invention may be used in methods for treatment of drinking water contaminated with algal metabolites. An inflow of water in a drinking water treatment facility may have multiple types...
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7294272 |
Method for the treatment of waste
A waste treatment system suitable for domestic use and capable of producing water suitable for recycling within the household. The system includes a bioreactor ( 30 ) and a decomposition chamber (...
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7294271 |
Process for restoration of ground water used in in-situ uranium mining
A process for biological restoration of ground water in a mineralized sandstone formation using a nutrient source. The process is used in conjunction with mining uranium using in-situ pump and...
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7294270 |
Method of treating photographic waste liquid
A photographic waste liquid treatment method comprises an electrolytic oxidation treatment for photographic waste liquid.
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7285216 |
Treatment of water
A process for treating sulphide-containing water includes maintaining a steep redox potential gradient in an interface zone of the sulphide-containing water. The water is exposed to an...
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7285207 |
Methods and apparatus for reducing nitrate demands in the reduction of dissolved and/or atmospheric sulfides in wastewater
A method and apparatus for treating wastewater streams by adding, either separately or as a mixture, a nitrate containing compound and an alkaline material in an amount sufficient to achieve a...
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7282149 |
Process for in situ bioremediation of subsurface contaminants
This invention includes methods of stimulating anaerobic degradation of subsurface contaminants. The methods include vaporizing a liquid electron donor to form a treating gas. The treating gas or...
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7279103 |
Process for the purification of acidic metal-bearing waste waters to permissible discharge levels with recovery of marketable metal products
Acidic metal-bearing wastewaters are treated to produce a finished water of sufficient purity to meet discharge standards while recovering metals removed in forms which are commercially valuable....
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7258790 |
Controlled eutrophication system and process
A controlled eutrophication system and process are disclosed. The system includes the combination of a partitioned aquaculture system in conjunction with an anaerobic digester. Wastewater...
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