Tunnel sewage treatment device

Abstract

The invention relates to the field of sewage treatment, in particular to a tunnel sewage treatment device. The device is realized through the technical scheme as follows: the tunnel sewage treatment device comprises a sewage pool for accommodating sewage to be treated, wherein the sewage pool sequentially comprises a primary sedimentation tank for primarily filtering the sewage, an organic matter treatment pool for decomposing and removing organic matters from the sewage, a third-stage sedimentation tank for further filtering the sewage, and a water collecting pool for collecting purified water in the water flowing direction. The invention aims to provide the tunnel sewage treatment device. Through arrangement of multiple different decontamination pools, the sewage is filtered, decontaminated and degreased and the pH value is regulated; too much physical kinetic energy is not required, so that the tunnel sewage treatment device is energy-saving and environment-friendly.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a tunnel sewage treatment device. Background technique [0002] During the tunnel operation, a large amount of production sewage is produced. Due to the limitation of construction level and equipment, some operating units will directly discharge the construction sewage into the nearby water system, causing certain pollution to the environment and to the local water system. Self-purification adds to the burden. There are also construction units that use a sewage treatment device such as the Chinese patent document CN203469617U, which includes a sewage tank and a filter screen that relies on the continuous rotation of the motor in the sewage tank to filter impurities in the water, but such The mode of use has the following disadvantages: 1. This technical solution needs to use a motor to drive the filter screen. Tunnel engineering is a large-scale and long-term project, and the ...

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Problems solved by technology

[0002] During the tunnel operation, a large amount of production sewage is produced. Due to the limitation of construction level and equipment, some operating units will directly discharge the construction sewage into the nearby water system, causing certain pollution to the environment and to the local water system. Self-purification adds to the burden

There are also construction units that use a sewage treatment device such as the Chinese patent document CN203469617U, which includes a sewage tank and a filter screen that relies on the continuous rotation of the motor in the sewage tank to filter impurities in the water, but such The way of use has the following disadvantages: 1. This technical solution needs to use a motor to drive the filter screen. The tunnel project is a large-scale and time-consuming project. The continuously rotating filter screen consumes more electric energy and increases production costs.

2. There are a lot of suspended solids and particles in the sewage in the tunnel, and the pH value also needs to be adjusted. It is difficult to achieve multiple purposes of filtering, degreasing, and adjusting the pH value of the tunnel sewage by relying on only one filter, so that Limited purification capacity for sewage treatment

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