Aerating sewage treatment system and multi-parameter fuzzy control method thereof

A sewage treatment system and aeration technology, applied in water/sludge/sewage treatment, water aeration, adaptive control, etc., can solve the problems of impossible application, expensive spectral online tester, etc. The effect of power

Pending Publication Date: 2018-01-26
ZHEJIANG ENERGY & NUCLEAR TECH APPL RES INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Spectral online testers used in large sewage plants are very expensive and cannot be applied in rural decentralized sewage treatment

Method used

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  • Aerating sewage treatment system and multi-parameter fuzzy control method thereof
  • Aerating sewage treatment system and multi-parameter fuzzy control method thereof
  • Aerating sewage treatment system and multi-parameter fuzzy control method thereof

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Embodiment Construction

[0021] In the system of the present invention, the multi-level liquid level sensors are respectively arranged in: the main pipe, the branch pipe A, the branch pipe B, the branch pipe C, and the branch pipe D. The maximum distance between the branch pipe sensors does not exceed 1km, and the zigbee wireless communication module is used to summarize the data to the central controller. The liquid level sensor and communication module are powered by micro photovoltaic panels, and the supercapacitor is used as an energy storage device when the light is insufficient. Conductivity sensors are respectively arranged at the inlet of the main pipe, the center of the aeration tank and the drain. The turbidity sensors are respectively arranged at the inlet and outlet of the main pipe. Conductivity sensors and turbidity sensors are connected to the central controller using cables.

[0022] attached figure 2 "1 main" in the middle is the liquid level sensor of the main pipe, and 1A, 1B, 1...

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Abstract

The invention relates to an aerating sewage treatment system and a multi-parameter fuzzy control method thereof and aims to provide the aerating sewage treatment system and the multi-parameter fuzzy control method thereof. According to the system, photovoltaic cells are taken as energy sources, and a direct-current motor and an aeration machine are taken as executing mechanisms. The operation modeof the system comprises steps as follows: sewage flow is estimated by detecting liquid level values of a branch sewer and a main pipe as well as transmitted time difference; initial rotating speed ofthe motor is calculated according to the flow as well as conductivity value and turbidity value of a water inlet; after the system operates for a period of time, the conductivity value and the turbidity value of a water outlet are detected, a fuzzy control rule table is searched according to total quantity and change rate, real-time rotating speed of the motor is determined, and energy waste is avoided.

Description

technical field [0001] The invention relates to an aeration sewage treatment system and a multi-parameter fuzzy control method thereof. Background technique [0002] The discharge and pollutant content of domestic sewage in rural areas are unstable and are greatly affected by factors such as seasons and population flow. The traditional distributed solar sewage aeration treatment device is an open-loop control system. If we want to ensure that the pollutant discharge standard is met during the maximum discharge, the energy consumed in most of the time is wasted; on the contrary, if we reduce the capacity of photovoltaic and energy storage batteries in order to reduce the cost, the discharge may exceed the standard in some time. In the end, a balanced compromise can only be made on total investment and pollution emissions. If the power of the aeration device can be adjusted according to the pollutant content, the cost can be reduced and the emission can be guaranteed. Ultim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F7/00G05B13/04
CPCY02W10/10
Inventor 杜强
Owner ZHEJIANG ENERGY & NUCLEAR TECH APPL RES INST
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