Kemira Oyj

Other

Sterling Specialty Chemicals Holding UK Limited

Mehrdad Hesampour

Iiris Joensuu

Marjatta Piironen

Yuping Luo

Sakari Halttunen

Lasse Kyllönen

Miguel Pelaez

Luciana Bava

Lenita Lindberg

Iris Porat

Hannele Havansi

Katriina Rajala

William Morris

Outi Gronfors

Roderick Abinet

Eija Korte

Marko Kolari

Reijo Aksela

Jaakko Ekman

Vesa Nuutinen

Alistair King

Kaisa Karisalmi

Kaj Jansson

Samantha Kiljunen

Ari Auvinen

Fazlollah Azarnoush

Adina Anghelescu-Hakala

Miia Niemelä

Outi Grönfors

Jussi Ruotsalainen

Eija Saari

Erkki Johannes Metsälä

Kirsi Kilponen

Matias Penttinen

Vesa Vuori

Heli Virkki

Jussi Salonen

Pirjo Vainio

Lasse Kyllonen

Lasse KYLLÖNEN

Disclosed are filter aids for use in industrial processes such as metal ore beneficiation dewatering and filtering processes, paper and pulp dewatering processes and sludge dewatering in municipal waste treatment. The filter aid provides increased filtering efficiency, and reduced filter cake moisture levels.

Dewatering aids

The present invention relates to a method of monitoring and optionally controlling removal of microplastics from microplastic containing raw water, drinking water, storm water, water originating from melted snow, surface water, effluent of industrial wastewater treatment plants, effluent of municipal wastewater treatment plants, industrial process water, using at least one coagulant and/or polymer, wherein the number of microplastic particles of the microplastic containing water before and/or after addition of said at least one coagulant and/or polymer is determined by using an optical measurement measuring light scattering and fluorescence of particles in a predetermined volume of the microplastic containing water.

Method of monitoring and optionally controlling removal of microplastics from microplastic containing waters

The present invention relates to a method of evaluating and optionally selecting a suitable chemistry for removal of microplastics in a liquid matrix, said method comprising using at least one coagulant and/or flocculant and measuring fluorescence intensity and light scattering intensity of any particles in a sample volume of clarified liquid matrix by an optical measurement.

Method of evaluating and optionally selecting a suitable chemistry for removal of microplastics in a liquid matrix

In a water treatment system, a pretreatment chemical is added to water stream in a pretreatment process including a coagulation, flocculation and separation to reduce amount of dissolved and/or particulate matter in the water stream. Hydrophobic conditions in the water stream are monitored upstream or downstream from adding the pretreatment chemicals. Dosing of the pretreatment chemical to the water stream is controlled based on the monitored hydrophobic conditions. Thereby a membrane fouling in subsequent membrane filtration stage can be minimized.

Method and system for controlling hydrophobic conditions and fouling in water intensive processes

Tagging agents, including fluorescent monomers, which may be polymerized. Anti-scalant polymer compositions that include a copolymer of a tagging agent and an anti-scalant monomer. Methods for synthesizing tagging agents, anti-scalant polymer compositions, and detecting an anti-scalant polymer composition.

Tagging agents, anti-scalant polymer compositions, and methods

The present embodiments generally relate to the treatment of produced water comprising one or more water soluble polymers, wherein such treatment comprises: adding to the produced water at least one iron complex; and degrading at least a portion of the one or more water soluble polymers. This treatment may result in a reduction of the viscosity of said produced water and/or the degradation of the water soluble polymers which are contained therein.

Polymer flooding produced water treatment

A method and apparatus for monitoring deposit formation in a process having an aqueous flow is provided. According to exemplary embodiments, a feed flow of an aqueous liquid is provided onto a receiving surface to be monitored. At least part of a receiving surface is illuminated with at least one light source. Visual data is collected across the receiving surface and analyzed. The quality and type of deposition attached to the receiving surface is classified based on information obtained from the analyzed visual data, and a quantitative scaling and/or fouling indication is computed based on the classification.

Method and an apparatus for monitoring and controlling deposit formation

Methods and systems are disclosed for optimization of coagulation and/or flocculation in a water treatment process. According to exemplary embodiments, samples are taken from an aqueous liquid and the samples are monitored with an imaging device to capture visual data of particles dispersed or suspended in the liquid. The particles are classified into particle types based on the visual data and a particle size distribution indication is computed for each classified particle type. The particle size distribution indication is then compared to a predetermined particle size distribution value, and in response to a difference detected, dosage of at least one coagulation and/or flocculation agent in the water treatment process can be adjusted.

Method and system for optimization of coagulation and/or flocculation in a water treatment process

The invention relates to a microbial fuel cell arrangement comprising a cell reactor. The cell reactor comprises a membrane, which has an active surface and a support surface, as well as a pore size of &#x2264;10 nm and/or a divalent ion rejection of &#x2265;50%; an anode and a cathode, which are connected with each other through an external electrical circuit; an influent inlet for liquid medium arranged at the active surface side of the membrane and at least one permeate outlet arranged at the support surface side of the membrane; an influent line connected to the influent inlet; a concentrate outlet, arranged at the active surface side of the membrane and connected to a concentrate line; and pressurisation means for creating pressure difference between the active surface side and support surface side of the membrane. The invention relates also to a method for operating a microbial fuel cell.

Microbial fuel cell arrangement and method for operating it

The present disclosure relates to a method for manufacturing a covalently functionalized coated magnetic nanoparticle and to said particles and uses thereof. The preparation method includes forming a shell of a hydrophilic polymer coating layer on top of a magnetic metal core coated with a carbon coating. In the method a particle comprising a magnetic metal core coated with a carbon coating is provided. The surface of the particle is subjected to covalent functionalization by generating amino reactive groups via diazonium chemistry and subsequently an irreversible attachment of an atom transfer radical polymerization (ATRP) initiator is carried out on said surface. A hydrophilic polymer layer is formed) by a surface initiated atom transfer radical polymerization (SI-ATRP) reaction with a monomer comprising N-isopropylacrylamide (NIPAM).

Functionalized magnetic nanoparticles and a method for preparation thereof

The invention relates to a method for reducing fouling in a microbial fuel cell. The method comprises feeding of an influent comprising organic substance(s) into the microbial fuel cell (MFC), which comprises an anode and a cathode connected through an external electrical circuit with each other. Organic substance(s) are converted into electrical energy in the microbial fuel cell by using microorganisms, such as exoelectrogenic bacteria, and a treated flow is removed from the microbial fuel cell. A cleaning agent composition is fed simultaneously with the influent to the microbial fuel cell. The invention relates also to the cleaning agent composition and its use.

Method for reducing fouling of a microbial fuel cell, cleaning agent composition and its use

The present invention relates to a composition for treatment of wastewaters in a membrane bioreactor comprising a mixture of inorganic coagulants and organic water soluble polymer(s), wherein the inorganic coagulants are selected from iron and/or aluminium containing compounds and the organic water soluble polymers are selected from the group consisting of anionic, cationic, nonionic polymers, polysaccharides and polyphenolic compounds and any combination thereof. The present invention further relates to a method for treating of wastewaters in a membrane bioreactor, and uses thereof.

Phosphorus precipitation and membrane flux in membrane bioreactors

The present invention relates to a method for preventing microbial growth on a filtration membrane during desalination process. The method comprises that the membrane is exposed to a low concentration of performic acid by continuously or intermittently introducing performic acid to the membrane surface. When performic acid is added according to the present invention to the water flow, there is no significant reduction in the water flux through the membrane.

Method for preventing microbial growth on a filtration membrane

Growing community of inventors

Espoo, Finland

Mehrdad Hesampour