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Rotational flow grit chamber tail end effluent dissolved oxygen intelligent control system and use method thereof

An intelligent control system, the technology of the cyclone grit chamber, which is applied in the control/manipulation system, water treatment parameter control, chemical instruments and methods, etc., can solve the problems such as the large increase of dissolved oxygen content in the anaerobic tank

Inactive Publication Date: 2021-01-12
HENAN TONGSHENG ENVIRONMENTAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the oxygenation phenomenon of the falling water in the above-mentioned cyclone grit chamber is obvious, resulting in a large increase in the dissolved oxygen content in the anaerobic tank of the subsequent biochemical treatment process section. Dissolved oxygen intelligent control system and its application method

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  • Rotational flow grit chamber tail end effluent dissolved oxygen intelligent control system and use method thereof

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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, in order to avoid the phenomenon of oxygenation caused by falling water in the cyclone grit chamber 5, resulting in a large increase in the dissolved oxygen content in the anaerobic pool 15 of the subsequent biochemical treatment process section, the intelligent control system for dissolved oxygen at the end of the cyclone grit chamber 5 , including the main outlet channel 16, the outlet weir 7 and at least two outlet wells 12 (the outlet well I 1201 and the outlet well II 1202), also including the electrically adjustable overflow weir plate 8, at least two ultrasonic liquid level difference gauges 9 (ultrasonic liquid level Differential meter I901 and ultrasonic level difference meter II902), at least two electric adjustment gates 13 (electric adjustment gate I1301 and electric adjustment gate II1302), at least two online dissolved oxygen meters 10 (online dissolved oxygen meter I1001 and online dissolved oxygen meter II1002) and control devi...

Embodiment 2

[0035] The method of using the intelligent control system for dissolved oxygen at the end of the cyclone grit chamber includes the following steps:

[0036] a. The sewage passes through the water inlet 1 (including the water inlet I101 and the water inlet II102) first through the fine grids 3I and II in the fine grid channels 2I and II, and then flows into the cyclone grit chamber 5I through the water inlet channels 4I and II and II;

[0037] b. After the sewage is treated by the cyclone grit chamber 5I and II, it flows into the outlet channels 6I and II, and then the main outlet channel 16I and II converges, and the electric adjustment overflow weir plate 8 on the outlet weir 7 makes the water flow evenly After distribution, it flows into and out of the water wells 12I and II;

[0038] c. The sewage finally passes through the water outlets at the bottom of each outlet well 12I and II, and flows into the corresponding anaerobic pools 15I and II through the outlet pipes 14I an...

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Abstract

The invention discloses a rotational flow grit chamber tail end effluent dissolved oxygen intelligent control system and a use method thereof, and belongs to the field of sewage treatment devices andapplication thereof, the rotational flow grit chamber tail end effluent dissolved oxygen intelligent control system comprises an effluent main canal, an effluent weir and at least two effluent wells,and further comprises an electric adjusting overflow weir plate, at least two ultrasonic liquid level difference meters, at least two electric adjusting gates, and at least two online dissolved oxygenmeters and a control device, wherein the electric adjusting overflow weir plate is arranged on the effluent weir, probes of the ultrasonic liquid level difference meters are respectively arranged below the liquid level of the effluent main canal and the liquid level of the corresponding water outlet well, the probe of each online dissolved oxygen meter is arranged below the liquid level of the corresponding water outlet well, dissolved oxygen in a water outlet well at the tail end of the rotational flow grit chamber and real-time liquid level difference data in a water outlet main canal and the water outlet well of the rotational flow grit chamber are collected through the control device, and the height of the electric adjusting weir plate on the water outlet weir of the rotational flow grit chamber and the opening degree of the electric adjusting gate of the water outlet well are controlled according to real-time detection data. The problem that dissolved oxygen rises due to water falling and oxygenation of the effluent weir at the tail end of the rotational flow grit chamber is solved.

Description

technical field [0001] The invention belongs to the field of sewage treatment devices and applications thereof, in particular to an intelligent control system for dissolved oxygen at the end of a cyclone grit chamber and its application in urban sewage treatment plants. Background technique [0002] The cyclone grit chamber is a kind of sewage pretreatment device commonly used in urban sewage treatment plants, which uses mechanical force to control the flow pattern and velocity of water, accelerates the sedimentation of sand particles, and allows organic matter to be carried away with the water flow. The swirling grit chambers of urban sewage treatment plants are generally built together with fine grids at the front end, and the number of pools or grids is generally not less than 2, which are used as backup for each other and designed to operate in parallel. Oxygen biochemical process section. In order to ensure the water depth of the fine grid channel at the front end and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/00
CPCC02F9/00C02F1/008C02F1/001C02F2001/007C02F3/28C02F2209/42C02F2209/22
Inventor 姚曙光郑娟赵中锐
Owner HENAN TONGSHENG ENVIRONMENTAL ENG CO LTD
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