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Products

Products

Domestic Sewage Treatment

Domestic Sewage Treatment

Integrated sewage treatment equipment is a device that integrates functions such as sewage treatment, sedimentation, filtration, oxidation, disinfection, etc. It converts harmful substances in sewage into harmless substances through various physical, chemical, and biological methods, achieving the goal of purifying water quality

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1098570215376957440

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Diesel wastewater

Diesel wastewater

Coal tar wastewater mainly comes from processes such as coking, gas purification, and refining of chemical products, with a complex water quality composition. During coking, coal is thermally cracked to release combined water. Water vapor is drawn out of the coke oven together with raw carbonization gas, and condensed into condensate water after cooling in the primary cooler, which is called surplus ammonia water. This wastewater contains high concentrations of ammonia, phenols, cyanides, sulfides, and organic oils, making it the main source of wastewater for sewage treatment stations. Coal tar wastewater has a complex composition, and its pollutants are divided into two categories: organic and inorganic. Inorganic pollutants generally exist in the form of ammonium salts, while organic pollutants are mainly phenolic compounds, including aliphatic compounds, heterocyclic compounds, and polycyclic aromatic hydrocarbons (PAHs). The water quality varies significantly; it contains a large amount of refractory substances and has poor biodegradability.

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1444001571468423168

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glass cellulose wastewater

glass cellulose wastewater

In the fiberglass industry, industrial wastewater mainly consists of rinsing water containing sizing agents discharged during the fiber drawing process, rinsing water containing binders from the felt-making process, and a small amount of resin-containing wastewater from fiberglass production. The sizing agent-containing wastewater discharged from the fiber drawing workshop accounts for approximately 80-90% of the total wastewater in the fiberglass industry. Therefore, fiber drawing wastewater is the primary source of pollution in the fiberglass industry. Fiberglass drawing wastewater is an organic wastewater, but its characteristics vary greatly depending on the type of sizing agent used.

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1444000530559881216

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Copper wire drawing oil wastewater

Copper wire drawing oil wastewater

Wire drawing oil is mainly used in the metal (such as copper, aluminum) wire drawing process of the wire and cable industry, playing roles in lubrication, cooling, cleaning, etc. As the working time of the wire drawing fluid increases, free acids and alkalis in the wire drawing fluid gradually accumulate, which reduces the lubricating capacity of the wire drawing fluid. In severe cases, this will cause wire breakage. At this point, the wire drawing fluid needs to be replaced, and wire drawing oil wastewater is generated accordingly. The treatment process of copper wire drawing fluid waste mainly consists of demulsification, oil-water separation, oil removal, copper removal, adjustment, and oil-water combination.

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1443997059311947776

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coking wastewater

coking wastewater

Characteristics of Coking Wastewater​ The pollutants contained in coking wastewater include phenolic compounds, polycyclic aromatic compounds, and heterocyclic compounds containing nitrogen, oxygen, and sulfur. It is a typical industrial wastewater containing refractory organic compounds.​ The easily degradable organic matter in coking wastewater mainly includes phenolic compounds and benzene compounds, while pyrrole, naphthalene, furan, and imidazole belong to degradable organic matter. The refractory organic matter mainly includes pyridine, carbazole, biphenyl, and terphenyl. The quality of coking wastewater varies greatly depending on the technological processes and production operation methods of different plants.​ The pretreatment methods before biological treatment are usually physical and chemical methods, such as air flotation, stripping, coagulation sedimentation, and breakpoint chlorination. The main purpose is to make the influent of the secondary biochemical treatment process meet the range of biodegradable treatment.

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1442483113916583936

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Spray tower emulsion oily wastewater

Spray tower emulsion oily wastewater

Oil substances usually exist in the following forms in wastewater:​ (1) Floating oil: The particle size of oil droplets is larger than 15 μm, and it can be easily separated from wastewater. The oil particles dispersed in wastewater are relatively large (with a particle size larger than 100 μm), making them easy to separate from wastewater. In petroleum wastewater, this type of oil accounts for 60% to 80% of the total oil content in the water.​ (2) Dispersed oil: The particle size of oil droplets is larger than 1 μm, and it is suspended in water.​ (3) Emulsified oil: The particle size of oil droplets is smaller than 1 μm. The oil particles dispersed in wastewater are extremely small and exist in an emulsified state, which makes them difficult to separate from wastewater.​ (4) Dissolved oil: It refers to the state where oil is dissolved in water.​

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1442478626996965376

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