Deep-well aerobic digestive treatment device and treating method for organic sludge

Abstract

The invention discloses a deep-well aerobic digestive treatment device and a treating method for organic sludge. The device comprises a reactor main body and a top box, wherein air inlets of intake pipes for aeration and circulation both are connected to an air compressor; a sludge outlet of a sludge inlet pipe is located at the axial middle part of the reactor main body; an air outlet of the intake pipe for aeration is lower than the sludge outlet of the sludge inlet pipe; a sludge inlet of a sludge outlet pipe is located at the internal bottom of the reactor main body and located under an aeration device; the upper port of an inner barrel in the reactor main body is located in the top box and the bottom port of the inner barrel is located between the sludge outlet of the sludge inlet pipe and the air outlets of the intake pipes; the sludge inlet pipe and the intake pipe for aeration is located outside the inner barrel; the sludge outlet pipe and the intake pipe for circulation are located in the inner barrel; an exhaust device is arranged at the top of the top box; the sludge outlet pipe extends upwards out of the top box and the sludge outlet of the sludge outlet pipe is communicated with a flocculation floatation tank; and a vacuumizing device is arranged on the sludge outlet pipe between the top box and the flocculation floatation tank. The deep-well aerobic digestive treatment device is high in organic matter degradation and removal speed, few in volatile solids in treated sludge, low in aeration amount and energy consumption; and multiple purposes of the air are realized, so that the cost is saved.

Description

Technical field [0001] The invention relates to an organic sludge treatment device and a treatment method. Background technique [0002] With the popularization of sewage treatment facilities, the increase in treatment capacity, the improvement of treatment standards and the expansion of treatment functions, the amount of sludge produced will increase substantially. At present, according to the sewage treatment load rate of 75%, and 6 tons of sludge with a moisture content of 80% per 10,000 tons of sewage, it is estimated that my country will produce about 30 million tons of urban sewage sludge with a moisture content of 80% each year. According to forecasts, the sludge output will exceed 60 million tons per year by 2020. In Europe and America, sludge treatment infrastructure costs account for as much as 60% to 70% of the total infrastructure costs of sewage treatment plants. The treatment cost of surplus sludge accounts for 25%-40% of the operating cost of the sewage plant, ev...

AI Technical Summary

Problems solved by technology

This method requires a longer hydraulic retention time, which not only increases the volume of the reactor, but also greatly increases the investment and treatment costs, and the current relationship between operating parameters and the growth of micro-animals, and how to control and maintain micro-animals under high-density conditions Long-term growth and other aspects of research are not enough, not suitable for large-scale promotion

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