Deep-well aeration tank, enhanced wastewater nitrogen and phosphorus removal device and enhanced wastewater nitrogen and phosphorus removal method

Abstract

The invention discloses a deep-well aeration tank, an enhanced wastewater nitrogen and phosphorus removal device and an enhanced wastewater nitrogen and phosphorus removal method, relates to a deep-well aeration tank, a wastewater treatment device and a wastewater treatment method, and provides a water treatment method and device suitable for treating municipal wastewater, particularly municipal wastewater in northeast China, small in floor area, low in energy consumption and easy to operate and maintain. The deep-well aeration tank comprises an outer deep-well aeration tank barrel, an inner deep-well aeration tank barrel, a deaeration tank and an aeration device. The enhanced wastewater nitrogen and phosphorus removal device comprises a water storage tank, an anaerobic tank, an anoxic tank, the deep-well aeration tank, a first deaeration tank, a second deaeration tank, a secondary sedimentation tank, a water inlet pump, a sludge return pump, a nitrification liquid return pump, a water outlet and a sludge valve. The enhanced wastewater nitrogen and phosphorus removal method comprises the following steps: 1, domesticating activated sludge in the deep-well aeration tank; 2, treating wastewater; 3, discharging water treated by the secondary sedimentation tank through the water outlet, and discharging the residual sludge through the sludge valve. The enhanced wastewater nitrogen and phosphorus removal device has unit land area treatment capability of 20,000 cubic meters per day, organic load capable of reaching more than 0.8kgBOD / kgMLSS and high dissolved oxygen utilization rate.

Description

technical field [0001] The invention relates to a deep well aeration tank, a waste water treatment device and a waste water treatment method. Background technique [0002] Water resources are the basic conditions for the survival of human beings, and also the basic prerequisite for the sustainable development of my country's economy. my country's total water resources rank among the top in the world, but the per capita water resources are less than 1 / 4 of the world average. [0003] With the development of our country's economy, the growth of population, the acceleration of industrialization and urban development, the water consumption is also increasing, the discharge of sewage is also increasing, and the pollution of surface water and groundwater is becoming more and more serious, making water resources scarce. situation is getting worse. By 2007, my country's sewage discharge will reach 105 billion tons. Such a large amount of sewage discharge directly and seriously af...

AI Technical Summary

Problems solved by technology

Many cities do not have enough land to build sewage treatment plants, and commonly used sewage treatment processes such as A2O, oxidation ditch and other processes often require a large amount of land for construction, so they cannot be realized

[0005] The construction of sewage plants in small towns has the problems of easy construction and difficult operation and maintenance, and sewage treatment plants are likely to have a greater impact on the surrounding environment, especially VOC (volatile organic compounds) will cause great inconvenience to the lives of people around the water plant

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