Efficient integrated aerobic biochemical wastewater treatment method

Abstract

The invention relates to an efficient integrated aerobic biochemical wastewater treatment method. The method is carried out by adopting an integrated aerobic biochemical precipitation treatment system, wastewater enters an aeration tank part main body through a water inlet pipe, enters a primary mud-water separation zone through a water outlet after being treated by an aeration zone, and is subjected to natural sedimentation, sludge flows back to the front end of the aeration tank part main body through a sludge return pump by virtue of a pipeline, supernate enters the primary mud-water separation zone through a water inlet, after mud-water separation is completed by virtue of a filler in the primary mud-water separation zone, clear water is collected to a water outlet tank through a drainage tank and then is discharged through a water outlet, and suspended matter in effluent can reach 15-30mg / L. According to the present invention, the large-scale wastewater treatment can be performed, the advantages of simple operation, strong adaptability, stable operation and the like are provided, the precipitation efficiency can be improved by 50-60%, and the suspended solids in the effluent of the system can be reduced to 15-30 mg / L.

Description

technical field [0001] The invention relates to a method for highly efficient and integrated aerobic biochemical treatment of wastewater, and belongs to the technical field of environmental protection water treatment and purification. Background technique [0002] In recent years, with the gradual implementation of national environmental protection policies, industrial enterprises have gradually strengthened their investment in sewage treatment systems. Due to the relatively low per capita water consumption in our country, the cost of industrial water use is increasing year by year, and the requirements for sewage discharge are also constantly improving and becoming stricter. [0003] In the sewage treatment process, the traditional activated sludge method has been widely used. In order to achieve a good water effluent effect, a low organic load is usually used in the design. The high-load wastewater of 1500mg / L and above is usually used to ensure that the effluent meets the...

AI Technical Summary

Problems solved by technology

The two sedimentation tanks need to be set up independently, and the first-level water outlet device and the second-level sedimentation tank connected by pipelines need to be installed between them. When treating wastewater with a high concentration, due to the high total salt and sticky matter in the wastewater, the two tanks should be separated. The body relies on self-flow, and the flow rate is low. The connecting pipes between the bodies are easily blocked due to the total salt and sticky substances in the water, and it is difficult to clean, which affects the stable operation of the system.

Set up two sedimentation tanks, occupy a large area, and the operation management is more complicated

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