Moderate temperature UASB reactor water distribution device in diameter of more than 15 meter

Abstract

A moderate temperature UASB reactor water distribution device in diameter of more than 15 meter comprises a moderate temperature UASB reactor, a plurality of U shaped water distribution branch pipe sets (1) at the bottom of the moderate temperature UASB reactor, wherein a branch pipe (7) on the U shaped water distribution branch pipe sets (1) belong the moderate temperature UASB reactor bottom range is connected with a water inlet manifold (8). The water distribution device is especially suitable for the moderate temperature UASB reactor in diameter of equal to or more than 15 meter and the water distribution at the bottom of the reactor is uniform and the water power rotary current is quickly formed and the water is mixed and the full-tank homogeneration effect is good; when the individual branch pipe is blocked, the on-line clear is easily realized; when the large-volume steeliness column shaped moderate temperature UASB reactor using the technique is in regular service, the COD average removal rate is stably above 70% and the firedamp generation index is 0.5m3 firedamp / KgCOD.

Description

technical field [0001] The invention relates to the technical field of energy-saving and emission-reducing wastewater treatment, in particular to a water distribution device for a medium-temperature UASB reactor with a diameter greater than 15 meters. Background technique [0002] For a medium-temperature UASB reactor with a single volume of more than 3,000 cubic meters and a diameter of more than 15 meters, the treatment effect depends largely on the uniformity of water distribution at the bottom of the tank. The water inflow per unit area must be basically equal to prevent Short circuit and uneven surface load; the sludge bed hydraulic mixing needs must be met, and the hydraulic mixing and generated biogas stirring must be considered; the clogging of the water inlet pipe must be easy to observe and easy to remove if it occurs. [0003] However, at present, the water distribution at the bottom of medium-temperature UASB reactors with large monomer volume is generally equipp...

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Problems solved by technology

[0004] 1. The end of each water distribution branch pipe is blocked, so that the water distribution of the medium temperature UASB reactor with a large bottom area is not easy to be uniform, and there are dead angles and dead areas;

[0005] 2. The end of each water distribution branch pipe is blocked, so that circulating water distribution cannot be formed, and the water distribution branch pipe is easily blocked, and the blockage point is not easy to find and clear;

[0006] 3. The openings of the small water distribution holes on the branch pipes are all vertically downward, and the incoming water cannot quickly form a swirling flow for hydraulic mixing, so that the organic pollutants in the water cannot fully contact with the microorganisms, thus affecting the treatment effect of the reactor

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