The washing sewage of hotel sheets, quilt covers, towels, carpets and other linens is mainly composed of soap, oil, synthetic detergents, detergents and a small amount of bacteria, coliforms, toxicity and other toxic and harmful substances, and has become an important source of water pollution. The concentration of organic matter in the washing sewage varies greatly, the turbidity is high, the BOD/COD ratio is about 1:1, and the biochemical performance is good. The active ingredients of detergents are surfactants and detergents. In addition, there are many auxiliary ingredients such as bleach. Surfactants can be classified into cationic, anionic and nonionic based on their molecular structure and group type. The latter two are widely used in industry and life. Spray with cleaner and wipe with cloth. Alkaline cleaners refer to cleaners with a pH greater than 7, mainly composed of surfactants and other raw materials; they are widely used because of their environmental protection, safety, low economic cost and good cleaning effect. Alkaline cleaners are mainly used for surface treatment of hardware, watches, jewelry, glasses, optics, sanitary ware, electronics, electrical appliances, electroplating and other industries. After the defoamer is added to the working solution, it becomes a solution, emulsion or dispersion, which is adsorbed on the surface of the foam film. Since its surface tension is lower than that of the foam film, it can attract surfactants or foam substances, reduce the surface viscosity of the foam film, and locally thin and break. Generally speaking, textile printing and dyeing defoamer can be divided into: organic defoamer and polysiloxane defoamer (usually called silicone defoamer). Organic defoamer - a water-insoluble liquid with low surface tension, the use of a large concentration of approx., the defoaming effect is often not easy to last. The main decontamination effect of dishwashing detergents is surfactant, which is emulsified, dispersed and dissolved in water through the lipophilic and hydrophilic groups in the surfactant to achieve the effect of decontamination. Therefore, a normal temperature cleaning agent that has no corrosive effect on metals can be selected, and other indicators of the cleaning agent are not required to be high. In terms of the composition selection of cleaning agents, aliphatic hydrophobic surfactants are mainly used for animal and vegetable oils. Aromatic-containing hydrophobic-based surfactants are mainly used in mineral oils. Concentrated water-based environmentally friendly cleaning agent can remove most grease, carbon deposits, etc. Therefore, without making several cylinders, the fabric surface was contaminated with oil of irregular shapes. When I first encountered this phenomenon, I had no idea where it came from, because the oil (what color, i.e.CTAC manufacturer  what color) adhered very brightly to the surface of the fabric. Foaming ether defoamer is a scum that touches impurities in fabric dyes through alcohol. Destroy the combination of directional molecular adsorption layer fouling formed on the gas-liquid surface (interface). until the bubble burst. Due to the dosage and performance of the defoamer used, many printing and dyeing companies have irregularities, color blocks, and oil sticking to the fabric during the operation. Therefore, while eliminating the bubble, it also brought many unfavorable factors and negative effects, and even caused economic losses. The surfactants of no-clean fluxes are mainly fatty or aromatic nonionic surfactants.Trimethylhexadecylammonium chloride supplier  Its main function is to reduce the surface tension when the solder is in contact with the lead metal, enhance the surface wetting force, enhance the permeability of the ③ organic acid activator, and also act as a foaming agent.Cetyl trimethyl ammonium Chloride factory  1. The surfactants used in the formulation of water-based coatings have foaming properties. When painting, due to the movement of the water-based paint, the internal gas mixes with the surfactant, creating foam. The main cause of the foam is the presence of too much surfactant, the amount of foam produced during medical cleaning also shows the amount of surfactant, more natural foam. (4) Surfactant function: The addition of surfactant can further improve the oil removal ability, generate foam on the surface of the tank, inhibit heat loss and tank volatilization, and more importantly, improve the stability of the tank, because the negatively charged surfactant It can be adsorbed around the particles, so that the particles have an electrostatic reaction, so that the particles can be well suspended in the tank and are not easy to precipitate.

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