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Sewage treatment energy-saving control method based on three-variable three-dimensional table

A technology for energy-saving control and sewage treatment, which is applied in the direction of program control, comprehensive factory control, and comprehensive factory control, and can solve problems such as difficult practical application of theoretical methods

Active Publication Date: 2015-06-24
BEIJING JINKONG DATA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Another object of the present invention is to provide a method for establishing a three-dimensional table with three variables, which can establish a three-dimensional table with the influent flow rate Q, the chemical oxygen demand of the influent water body P, and the deviation ΔC of the effluent chemical oxygen demand as three variables to realize The precise control of sewage drainage can exert high-efficiency and energy-saving effects in projects, and solve the problems that existing theoretical methods are difficult to apply in practice

Method used

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  • Sewage treatment energy-saving control method based on three-variable three-dimensional table
  • Sewage treatment energy-saving control method based on three-variable three-dimensional table
  • Sewage treatment energy-saving control method based on three-variable three-dimensional table

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Effect test

example 1

[0072] Take the maximum frequency of the blower as 50Hz, and the actual number of working blowers as 2 in a sewage treatment plant of 50,000 tons.

[0073] The specific process of adjusting the frequency or the number of blowers is as follows:

[0074] 1. Establish a three-dimensional table 2-sub-table 2 in the host computer with the gradually increasing influent flow Q, influent chemical oxygen demand P, and effluent chemical oxygen demand deviation ΔC as three variables (as shown in Table 2 Shown), where ΔC=2ΔC 0 , 1=2, wherein, as the influent flow rate Q, the chemical oxygen demand of the influent water body P, and the deviation ΔC of the effluent water body chemical oxygen demand gradually increase or decrease, the theoretical number n of corresponding blowers gradually increases or decreases; As the influent flow Q, influent chemical oxygen demand P, and effluent chemical oxygen demand deviation ΔC gradually increase or decrease, the corresponding blower theoretical out...

example 2

[0091] Take the maximum frequency of the blower as 50Hz and the actual number of blowers as n as an example.

[0092] The specific process of adjusting the frequency or the number of blowers is as follows:

[0093] 1. Establish a three-dimensional table n (as shown in Table 7) in the host computer with the gradually increasing influent flow Q, influent chemical oxygen demand P and effluent chemical oxygen demand deviation ΔC as three variables, where , with the influent flow Q, influent chemical oxygen demand P, and effluent chemical oxygen demand deviation ΔC gradually increasing or decreasing, the corresponding number of theoretical working units n of the blower gradually increases or decreases, and the corresponding number of theoretical working units of the blower n gradually increases or decreases; as the influent flow Q, influent chemical oxygen demand P and effluent chemical oxygen demand deviation ΔC gradually increase or decrease, the corresponding blower theoretical ...

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Abstract

The invention discloses a sewage treatment energy-saving control method based on a three-variable three-dimensional table. According to the sewage treatment energy-saving control method based on the three-variable three-dimensional table, the output frequency of air blowers is adjusted according to the change of the sewage inflow rate, the water inflow chemical oxygen demand and the water effluent chemical oxygen demand deviation. The sewage treatment energy-saving control method based on the three-variable three-dimensional table comprises the steps that the three-dimensional table with the gradually increasing sewage inflow rate Q, the gradually increasing water inflow chemical oxygen demand P and the gradually increasing water effluent chemical oxygen demand deviation delta C used as the three variables, and the corresponding theoretical number n of working air blowers and the theoretical output frequency values (please see the specification for the symbol) of the air blowers are increased or decreased along with the increasing or decreasing of the gradually increasing sewage inflow rate Q, the gradually increasing water inflow chemical oxygen demand P and the gradually increasing water effluent chemical oxygen demand deviation delta C; the current water inflow rate Q', the current water inflow chemical oxygen demand P' and the current water effluent chemical oxygen demand C are obtained regularly; the water effluent chemical oxygen demand deviation delta C is calculated according to the current water effluent chemical oxygen demand deviation C and a water chemical oxygen demand discharging standard value; the current theoretical number n of working air blowers and the current theoretical output frequency values (please see the specification for the symbol) of the air blowers are obtained by positioning the current water inflow rate Q', the current water inflow chemical oxygen demand P' and the water effluent chemical oxygen demand deviation delta C in the three-dimensional table, and then the number n' of actually-working air blowers and the actual output frequency of the air blowers are adjusted in real time. According to the sewage treatment energy-saving control method based on the three-variable three-dimensional table, the frequency and the number of the air blowers can be adjusted intelligently, and thus the situation that the sewage treatment capacity is not high enough due to the fact that the frequency of the air blowers is too low or waste is caused due to the fact that frequency of the air blowers is too high is avoided.

Description

technical field [0001] The invention relates to an energy-saving control method used in the case of sewage treatment. More specifically, the present invention relates to an energy-saving control method for sewage treatment based on a three-variable three-dimensional table used in the case of sewage treatment. Background technique [0002] On the one hand, the high energy consumption of urban sewage treatment has caused high operating costs of sewage treatment facilities, and on the other hand, it has also exacerbated the energy crisis and environmental pollution in my country at this stage. With the continuous increase of sewage treatment plants, the energy consumption of sewage treatment plants has attracted more and more attention. Sewage treatment plants must study various new technologies for energy saving and consumption reduction, so as to reduce the cost of sewage treatment and improve economic and environmental benefits. [0003] In the operating cost of convention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02G05B19/41875
Inventor 杨斌刘萌任艳真
Owner BEIJING JINKONG DATA TECH
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