摘要:
A composition and method for reducing odors and cleaning packing media and other components in a wet air scrubber using nonionic surfactants, amphoteric surfactants, and a source of humic acid. Preferred nonionic surfactants include regular and low foam nonionic surfactants. The source of humic acid is preferably organic peat humus. The treatment composition is added to water in the wet scrubber at a concentration of 50-1000 ppm. The treatment composition is a premixed composition in a single container, making it unnecessary to separately add ingredients to the water. The treatment composition is effective at reducing odors by at least 50% compared to no treatment. The treatment composition is also effective at significantly reducing foam levels, making it unnecessary to add a separate defoamer to the water being treated. The treatment composition does not need to use defoamers, enzymes, oxidizers, chlorine compounds, or strong acids to be effective.
摘要:
Vorgeschlagen wird ein Verfahren zur Aufbereitung von Wasser sowie wässrigen Lösungen oder Zubereitungen, umfassend die folgenden Schritte: (a) Inkontaktbringen des die abzutrennenden Schadstoffe enthaltenden wässrigen Mediums mit Polymerkondensaten in Kontakt bringt, die dadurch erhältlich sind, dass man Mikroorganismen mit wässrigen Alkalibasen behandelt und die so erhaltenen Zwischenprodukte anschließend mit Triglyceriden sowie gegebenenfalls mehrwertigen Carbonsäuren und/oder Polyolen mit 2 bis 12 Kohlenstoffatomen und 2 bis 6 Hydroxylgruppen umsetzt; (b) Abtrennen der an die Polymerkondensate chemisch oder physikalisch gebundenen Schadstoffe unter Rückgewinnung des gereinigten wässrigen Mediums.
摘要:
The present invention relates to a process for collecting and separating of water-insoluble pollutant from aqueous or soil environments, comprising the steps of: (i) applying an adsorbent composition comprising chitin, chitosan or derivatives thereof and at least one anionic surfactant to the aqueous or soil environment polluted with water-insoluble pollutant, so that the polymer having pollutant entrapped therein is coagulated, and (ii) separating the coagulated polymer from the aqueous or soil environment; and an absorbent composition utilized in that process.
摘要:
Small, wet particulate material is effectively dried by adding a hydrophobizing agent to the wet particulate material to coat the surfaces of particulates, and then using a gaseous fluid to mechanically remove water droplets from the surfaces of the particulates. Once on the surface of the particulates, the hydrophobizing reagent makes the particulates relatively more hydrophobic and increases the contact angle between the particulates and water preferably to an angle of 90 degrees or greater. The activity of the hydrophobizing reagent is to repel water. After altering the hydrophobicity of the particulates, the gaseous fluid, which is preferably air under pressure, is directed at mild pressure over the surfaces of the particulates to remove the water. Because the tendency of the hydrophobizing agent is to increase the particulates' tendency to repel water, the water is easily displaced from the surface of the particulates under mild conditions. The process can be used to dewater a wide variety of constituents including coal particles, clays, sulfide minerals, phosphorous compounds, metal oxide minerals, metals and waste sludge.
摘要:
The invention relates to a method for recovering fluorinated emulsifying agent acids from waste waters, characterized in that the finely dispersed solids in the waste water are stabilized with a nonionic or cationic surfactant or an analogous acting surface active substance, the fluorinated emulsifying agent acids are subsequently bonded on an anion exchange resin and the fluorinated emulsifying agent acids are eluted from the latter.
摘要:
The invention concerns compositions obtainable by mixing an anion surfactant solution with a mineral cation solution with a charge not less than 2. The invention also concerns the use thereof in aqueous media, in particular for clarifying urban or industrial waste water.
摘要:
Methods and compositions for detackifying and dispersing, and coagulating/flocculating and dispersing solventborne and waterborne paints, respectively, in paint spray booth waters are disclosed. An aqueous composition of water soluble cationic polymer, nonionic surfactant and amphoteric surfactant is used in conjunction with a silicate compound to treat the paint spray booth waters.
摘要:
Le procédé de traitement d'effluents décrit consiste : a) à ajouter un coagulant à l'effluent pour permettre la concentration de la matière organique contenue dans l'effluent; b) à traiter la matière organique ainsi concentrée avec un mélange d'un polymère ou d'un copolymère cationique en présence d'un agent tensio-actif anionique et/ou d'un agent tensio-actif non ionique; et c) à séparer la matière organique de l'effluent par flotation.
摘要:
Processes for the separation of water from a mixture of water with other components, comprising the following steps: A) providing feed material FM comprising water and at least one a nonionic surfactant S in an amount of 0.1 to 1000 ppm by weight based on the feed material FM, B) subjecting said feed material FM to a distillation step using a falling film evaporator.