Air-floated water treating apparatus

Abstract

An air flotation water treatment device is improved on the basis of the existing CAF air flotation apparatus and overcomes the shortages of the original air flotation apparatus; a mixing room is additionally arranged at a water inlet end; an water inlet port and a drug adding port are simultaneously arranged on the mixing room which then becomes a rapid mixing zone for sewage and medicine liquid;the sewage and the medicine liquid enter a contact zone after being mixed; a separating sloping plate and a mud collection bucket are additionally arranged in a treatment zone; a water inlet zone is connected with the contact zone by a return pipe 7, so that the mixing time for the entering water of the existing CAF air flotation type water treatment device and the medicine liquid is decreased within 5 seconds from the original 15 minutes; the mixing room and the air flotation apparatus are integrated into a body, so that the mud sediment grains in water fall to the separating sloping plate and then are conducted into the mud collection bucket; the air flotation water treatment device can be used separately as sewage main body treatment equipment, can separately assume a solid-liquid separation task, and can be applied to most of water treatment systems; and the lower part of a separation zone of the sloping plate is provided with a multi-bucket mud connection zone, so that the overall equipment height is saved, the sedimentation effect is enhanced, and the precipitated mud is rapidly eliminated.

Description

Technical field: [0001] The invention relates to a treatment device for removing COD, grease, colloidal substances and suspended solids (SS) in industrial and urban sewage. Background technique: [0002] Air flotation is to use the microbubbles generated by the air entering the water to attach to the pretreatment pollutants to form an air-pollution mixture. Due to the density imbalance between the air-pollution mixture and the liquid, buoyancy is generated, and the pollutants are brought to the water surface for removal to achieve purification. A water treatment technology for sewage; air flotation is a fast and efficient solid-liquid separation technology. In recent years, it has been widely used in the water treatment industry. It can replace the sedimentation and clarification processes in water treatment, especially for the removal of those frivolous flocs, and the effect is more obvious. At present, the more advanced air flotation water treatment device is the CAF vort...

AI Technical Summary

Problems solved by technology

However, this kind of air flotation water treatment device can only be used for pretreatment of sewage, and it cannot treat sewage thoroughly alone. It cannot completely replace the sedimentation treatment process, and its application range is relatively limited.

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