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Real-time monitoring system for resistance characteristics of aerator in sewage treatment plant and blocking early-warning method

A real-time monitoring system and sewage treatment plant technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of aerator maintenance, replacement and shutdown, and failure to warn aerators Cleaning requirements, difficult replacement of aerators, etc.

Active Publication Date: 2016-09-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the output pressure of the blower is interfered by various factors such as the liquid level of the aeration tank, valve adjustment, temperature, etc., and the interference range is large, so it is difficult to identify the resistance increase factor with a small range and slow change, resulting in the failure to find the aerator in time The trend of resistance changes cannot warn the cleaning needs of the aerator, so that the surface pollution of the aerator accumulates slowly for a long time, and finally large-scale repairs, replacements and production shutdowns of the aerator occur, causing greater losses
[0004] In addition, my country's underground sewage treatment plants are developing rapidly, and the closure of the pool surface brings great difficulties and high costs to the replacement of aerators. Corresponding treatment measures to prolong the service life of the aerator and reduce the energy consumption of the aeration system

Method used

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  • Real-time monitoring system for resistance characteristics of aerator in sewage treatment plant and blocking early-warning method
  • Real-time monitoring system for resistance characteristics of aerator in sewage treatment plant and blocking early-warning method
  • Real-time monitoring system for resistance characteristics of aerator in sewage treatment plant and blocking early-warning method

Examples

Experimental program
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Effect test

Embodiment 1

[0077] An AAO process sewage treatment plant uses corundum spherical aeration discs, with a treatment capacity of 100,000 tons per day, divided into two parallel series, with a total of 10 aeration areas. use as figure 1 The measurement and control devices are arranged in the manner shown, and the specific method is: the electromagnetic inflow flowmeter of E+H company is arranged on the two parallel series of water inlet pipelines, and the gas pressure meter of E+H company is arranged on the main aeration pipe. The gas pressure gauge and gas mass flowmeter of E+H Company are respectively arranged on the 10 aeration branch pipes, and the domestic V-shaped ball valve is proportional to adjust the gas flow of the branch pipes. Due to technological reasons, the liquid level gauge in the aeration area is not installed. The system controller adopts the Siemens S7-300 programmable controller, in which the ladder diagram is used to write the program; each measurement control device is...

Embodiment 2

[0087] An underground sewage treatment plant adopts such as figure 1 The measurement and control devices are arranged in the manner shown, specifically, the influent liquid flowmeter, the gas pressure gauge of the aeration main pipe, the gas pressure gauge of the aeration branch pipe, the air flow equal ratio regulating valve (rhombic valve) of the aeration branch pipe, etc. are installed, and the aeration pipe is not installed. Liquid level gauge in gas zone, gas mass flowmeter in branch pipe.

[0088] In the same manner as in Example 1, according to the real-time monitored aeration area inflow flow Q in Use formula (1) to estimate and calculate the water depth value H of the aeration area L .

[0089] Since the gas mass flowmeter in the branch pipe is not installed, it is necessary to monitor the real-time gas pressure P of the main pipe 0 The valve opening D of the equal ratio regulating valve with the branch pipe flow and the branch pipe gas pressure value P 1 , accord...

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Abstract

The invention relates to a real-time monitoring system for resistance characteristics of an aerator in a sewage treatment plant and a blocking early-warning method of the aerator in the sewage treatment plant, wherein the real-time monitoring system for the resistance characteristics of the aerator in the sewage treatment plant comprises a measurement control device, an input-output module, a system controller and a human-computer interaction interface, wherein the measurement control device comprises a dry pipe gas manometer mounted on an aeration dry pipe of the sewage treatment plant, as well as branch pipe airflow geometric regulating valves, a branch pipe gas flowmeter and / or a branch pipe gas manometer all mounted on aeration branch pipes of the sewage treatment plant, and a water inlet fluid flowmeter mounted on a pipe in front of the water inlet of an aeration tank and / or an aeration zone level gauge mounted on the aeration tank which is corresponding to an aeration zone; the input-output module is connected with each measurement control device through a cable, the system controller is directly connected with an air blower and the input-output module, and the human-computer interaction interface is connected with the system controller.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a real-time monitoring system for resistance characteristics of an aerator in a sewage treatment plant and a blockage early warning method. Background technique [0002] The scale of my country's sewage treatment plants is developing rapidly, and aerobic aeration technology is widely used in mainstream processes to achieve stable and effective reduction of pollutants. According to literature statistics, the power consumption of the aeration system accounts for 40% to 60% of the total power consumption of the sewage treatment plant, so the cost control technology of the aeration system has been paid attention to in the energy saving and consumption reduction of sewage treatment. The energy consumption of the aeration system mainly comes from the energy loss of the blower, the resistance loss of the pipeline system and the local resistance loss of the aerator. Among them, the energ...

Claims

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Application Information

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IPC IPC(8): C02F3/02C02F3/00
CPCC02F3/006C02F3/02C02F2209/006C02F2209/38C02F2209/40C02F2209/42Y02W10/10
Inventor 邱勇李冰田宇心施汉昌
Owner TSINGHUA UNIV