Pretreatment device for water inlet on-line instrument room

Abstract

The invention relates to the technical field of sewage monitoring pretreatment, and particularly discloses a pretreatment device of a water inlet online instrument room, which comprises a mounting frame with an open upper side, a first settling tank, a second settling tank and a third settling tank are sequentially arranged in the mounting frame, and a water outlet pipe and a filter plate are arranged on one side in the third settling tank. And a spiral blade with a hole is arranged in the first settling tank through a rotating shaft. The device can be arranged near a fine grid of a sewage plant, and can ensure enough high level difference, so that pretreated sewage flows to an instrument room pipeline by gravity, and the system is ensured to operate in an hour; the pretreatment is divided into a water pumping part, a sand settling and filtering main body part, a scum and filtering system, a sludge discharging system, a backwashing and surpassing system and the like, so that samples in a sampling pipeline of a water inlet on-line instrument room can meet the current situation in real time, and fresh, clean and real sample output is ensured.

Description

technical field [0001] The invention relates to the technical field of sewage monitoring and pretreatment, in particular to a pretreatment device for a water inlet online instrument room. Background technique [0002] At present, sewage and water treatment plants are equipped with influent online monitoring rooms to monitor the influent water for 24 hours. However, because the sewage in the municipal pipe network contains impurities such as sediment, scum, and small particle garbage, these impurities, on the one hand, directly enter the online monitoring system. The sampling pipeline can easily cause the management of the online monitoring equipment to be blocked, which will lead to measurement failure and inaccuracy. On the other hand, if the sewage is filtered excessively, it is easy to remove the components in the sewage, resulting in low total phosphorus, COD and other data. Happening. At present, due to impurities in sewage, the pretreatment filter is difficult to dred...

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Problems solved by technology

[0002] At present, sewage water treatment plants have set up online monitoring rooms for influent water to monitor the influent water for 24 hours. However, since the sewage in the municipal pipe network contains impurities such as sediment, scum, and small particles of garbage, these impurities will directly enter the online monitoring system on the one hand. Sampling pipelines can easily cause blockage of online monitoring equipment management, which will cause measurement failure and inaccuracy. On the other hand, if the sewage is too finely filtered, it is easy to remove the components in the sewage, resulting in low total phosphorus, COD and other data Happening

At present, due to the problem of impurities in the sewage, the pretreatment filter is difficult to dredge, cumbersome to maintain, frequent faults, data distortion and other problems, which greatly limit the stable operation of the online equipment at the water inlet, and the environmental protection department requires online monitoring data at the water inlet 24-hour stable monitoring and real-time upload to the environmental protection platform, so it is necessary to improve the accuracy and effectiveness of online monitoring at the water inlet

[0003] At present, most enterprises use the pre-filter to pretreat the sewage entering the testing and sampling pipeline, which has the following disadvantages: the filter is difficult to dredge, and the sediment is easy to settle at the bottom of the tank after a long period of sedimentation in the sedimentation tank. adhesion, which leads to defects such as difficulty in subsequent mud discharge; therefore, in order to solve such problems, we propose a pretreatment device for water inlet online instrument room

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