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Multi-point combined accurate aeration control method

A control method and combined technology, applied in water aeration, chemical instruments and methods, complex mathematical operations, etc., can solve problems such as poor control effect, inaccuracy, waste of energy aeration, etc., and achieve the effect of reducing operating costs

Inactive Publication Date: 2018-01-09
MCC HUATIAN NANJING AUTOMATION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects and deficiencies of the existing technology, the present invention provides a multi-point combined precise aeration control method, which can solve the problems of poor control effect, waste of energy and imprecise aeration.

Method used

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Examples

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Embodiment 1

[0030] From figure 1 and figure 2 It can be seen that a multi-point combined precise aeration control method in this embodiment includes a control system including multiple biochemical tanks, a number of aerators 1, a number of partition controllers 2, a number of dissolved oxygen measuring instruments 3, and a number of regulating valves. 4. A number of aeration air main pipes 5, a number of weighted calculators 6, a number of process controllers and logic controllers 7, a number of frequency conversion controllers 8 and a number of blower combination kits 9, the following steps are adopted:

[0031] Step 1: First, for a single biochemical pool, install at least three sets of aerators in the biochemical pool, and install them in the front, middle and back sections according to the water inlet direction, or in the outer, middle and inner ditch;

[0032] Step 2: Then install the actuator regulating valve at the total air inlet of each group of aerators;

[0033] Step 3: Diss...

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Abstract

The invention discloses a multi-point combined accurate aeration control method, and belongs to technical field of automation process control. The method comprises: step 1, one biochemical tank is equipped with at least three groups of aerators, which are installed at front, middle and rear sections of the biochemical tank or installed in outer, middle and inner grooves according to a water inletdirection; step 2, a regulating valve is arranged at a total air inlet of each group of aerators; step 3, in the area of each group of aerators that are distributed in the biochemical tank, accordingto the technical requirement, a dissolved oxygen gauge is installed at a representative point; and step 4, a control apparatus is centrally arranged in a factory, through a necessary isolation or signal conversion device, a DO value y measured by the dissolved oxygen gauge, a regulating valve opening feedback value x and a regulating valve execution opening value i output by the control apparatusare connected, and a single dissolved oxygen zone control closed loop is formed. The method is good in control effect, saved in energy, and accurate in aeration.

Description

technical field [0001] The invention relates to the technical field of automatic process control, and more specifically relates to a multi-point combined precise aeration control method. Background technique [0002] The aeration system is the core of sewage biochemical treatment, and reasonable dissolved oxygen is crucial to the degradation of microbial pollutants. Insufficient aeration and low dissolved oxygen (DO) content will cause filamentous bacteria to grow in the aerobic tank and cause sludge bulking; on the contrary, excessive aeration will not only lead to a large amount of energy waste, but also affect the A2 / O process. Generally speaking, if the DO content in the aerobic tank is too high, the DO content in the anoxic tank will increase through internal backflow, thereby inhibiting the denitrification reaction and affecting the denitrification effect. In addition, activated sludge flocs may be broken due to sludge oxidation and excessive air agitation, thereby re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F7/00G06F17/15
CPCY02W10/10
Inventor 钱宏梁斌伦
Owner MCC HUATIAN NANJING AUTOMATION ENG
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