Reinforced aerobic-anaerobic manpower rapid-infiltration sewage treatment system

Abstract

The invention relates to a reinforced aerobic-anaerobic manpower rapid-infiltration sewage treatment system, which consists of an aeration system and a water outlet collection system, wherein the aeration system sequentially consists of a soleplate, a supporting layer, aeration layer lower part stuffing, an aeration layer, aeration layer upper part stuffing and a vertical ventilation pipe from bottom to top, wherein the upper end of the vertical ventilation pipe is communicated with the atmosphere, the lower end is communicated with the aeration layer, the aeration system is connected with the water outlet collection system through a drain collection pipe, the drain collection pipe is provided with a plurality of water inlet holes, and the drain collection pipe is horizontally arranged on the bottom part of the aeration layer lower part stuffing. Besides the advantages of simple device by utilizing the manpower rapid-filtration technology, convenient operation and management, low energy consumption, less expense and the like, the system adequately utilizes the principle of the natural ventilation and submerged discharged flow to reasonably establish the ventilation aeration layer-underwater anaerobic layer, so the nitrification-denitrification effect are strengthened, the aeration effect is good, and the biological denitrification effect is improved; and moreover, through the parallel running of multiple groups of manpower rapid-filtration units, the continuous inflow and outflow of the water can be realized.

Description

technical field [0001] The invention belongs to the field of municipal and environmental protection engineering, and in particular relates to an improved aerobic-anaerobic artificial fast-seepage sewage treatment system, which is especially suitable for aerobic-anaerobic sewage treatment or micro-polluted water body restoration with no energy consumption and low cost . Background technique [0002] As a sewage land treatment technology, the artificial rapid infiltration treatment system is characterized by simple equipment, convenient operation and management, low energy consumption, and the cost is only 1 / 2 to 1 / 10 of the conventional secondary biological treatment, and the purification effect is good. , which can be used as an alternative to traditional biological treatment. [0003] Since the birth of the traditional artificial rapid infiltration treatment system, there have been many shortcomings: ①The removal effect of ammonia nitrogen is not good: the main mechanism o...

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Problems solved by technology

[0003] Since the birth of the traditional artificial rapid infiltration treatment system, there have been many deficiencies: ① The removal effect of ammonia nitrogen is not good: the main mechanism of the system to remove ammonia nitrogen is through aerobic nitrification-anoxic denitrification, because the removal of ammonia nitrogen in the soil is It is a relatively complicated process, and the oxygen supply is limited, it is difficult to coordinate the mutual conversion between aerobic and anaerobic environments, so the removal rate of ammonia nitrogen in this system is low, and it is difficult for the effluent ammonia nitrogen to reach the standard

②Low hydraulic load: The artificial rapid infiltration system has very limited removal effect on pollutants. Generally speaking, in order to achieve a better treatment effect, the hydraulic load should be kept low, which limits the wide application of this process

③Intermittent operation of the system: artificial rapid infiltration adjusts the treatment effect of the system by controlling the hydraulic load cycle and the wet-dry ratio. Although the wet-dry ratio operation mode can prevent excessive clogging of soil surface pores caused by organic matter growth and suspended matter deposition, And it can re-oxygenate the system to a certain extent, so that the redox environment can be formed alternately on the section of the latent layer inside the system, which is conducive to the degradation and removal of organic pollutants; but in order to obtain the best denitrification effect, it needs a long enough drying time, so that As a result, the entire system cannot operate continuously and can only treat sewage intermittently

However, this patent has the following defects: ①The reoxygenation layer with the horizontal ventilation pipe as the main body has low oxygen mass transfer efficiency, and the service area of ​​the pipeline is very limited, so the reoxygenation effect is not good; ②The construction of the reoxygenation layer structure Although the oxygen content in the filler is increased, this also weakens the anoxic denitrification effect, resulting in unsatisfactory denitrification effect; ③The system does not adopt the operation mode of wet-dry ratio, and the growth of organic matter and the deposition of suspended matter are likely to cause pores on the soil surface Blockage, thereby reducing the permeability of the system, resulting in poor sewage treatment effect

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