Mixed packed bed biological aerated filter sewage treatment device and treatment method

Abstract

The invention discloses a mixed packed bed biological aerated filter sewage treatment device and a mixed packed bed biological aerated filter sewage treatment method, and relates to sewage treatment. The device is provided with a water inlet tank, a lifting pump, an air blower, a biological filter column and an aerator, wherein a water outlet of the water inlet tank is connected with an inlet of the lifting pump; the biological filter column is provided with a column body, a support plate, a water inlet and a water outlet; the outlet of the lifting pump is connected with the water inlet; the water inlet is formed in the bottom of the column body; the support plate is arranged above the water inlet; one ore more through holes for water distribution are formed in the support plate; a mixed filler is filled on the support plate in the column body; the water outlet is formed in the top of the column body; sampling ports are formed in the column body; an air outlet of the air blower is connected to the aerator at the bottom of the column body. Marine culture wastewater in the water inlet tank flows into the bottom of the biological filter column under the action of the lifting pump, and flows out of the water outlet in the top of the biological filter column after passing through the mixed packing. The growth of microorganisms is facilitated, and certain calcium carbonate can be released by seashell biological ceramsite in a running process to buffer the pH and ensure an environment required by the nitrification of the microorganisms.

Description

technical field [0001] The invention relates to sewage treatment, in particular to a sewage treatment device and treatment method of a mixed packing bed aerated biological filter. Background technique [0002] my country is a resource-based and water-quality-based water-scarce country. The United Nations stipulates that my country's per capita water resources are less than 1 / 4 of the world's average level, and China is a resource-based water-deficient country. With the rapid development of economy, water pollution is becoming more and more serious. At present, the situation that my country's sewage treatment is facing is that the water pollution is serious, the treatment starts late, the foundation is poor, and the requirements are high. According to the national sewage discharge forecast and the 2010 long-term plan for environmental governance, my country's total sewage discharge in 2010 is about 76.3 billion cubic meters, 45% of which needs to be treated, and the daily t...

AI Technical Summary

Problems solved by technology

At present, the way to supplement alkalinity is mainly to add NaHCO 3 or NaOH, which undoubtedly increases the difficulty of operating costs and management

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