Unlock instant, AI-driven research and patent intelligence for your innovation.

Agglomerant transfusion control system

A technology of control system and coagulant, which is applied in the direction of electrical program control, program control in sequence/logic controller, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of low correction accuracy of coagulant injection amount, and achieve Injection rate correction, effect of shortening time delay

Active Publication Date: 2011-01-05
HITACHI LTD
View PDF11 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the correction accuracy of the injection amount of the coagulant is lowered compared with the case of using the data at the outlet of the sedimentation tank.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Agglomerant transfusion control system
  • Agglomerant transfusion control system
  • Agglomerant transfusion control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] figure 1 It is a figure which shows an embodiment of the coagulant injection control system of this invention. like figure 1 As shown, the coagulant injection control system 10 in Embodiment 1 includes a management mechanism 100, a network 200, a drug injection mechanism 300, a raw water sensor 420, a drug injection device 450, a floc classification device 530, and a first turbidity sensor (classified treatment water turbidity sensor) 560. As described below, the coagulant injection control system 10 injects the coagulant into the water purification treatment facility 400 .

[0075] In the coagulant injection control system 10 , the raw water sensor 420 , the drug injection equipment 450 , the floc classification device 530 and the first turbidity sensor 560 are set in the water purification treatment facility 400 . The management organization 100 , the network 200 and the drug injection mechanism 300 may be installed inside the water purification treatment facility ...

Embodiment 2

[0139]In Embodiment 2, in the coagulant injection control system of Embodiment 1, the injection rate correction function 153 is used to predict the turbidity of the coagulant injection water when it reaches the outlet of the sedimentation tank, and the coagulant injection amount is calculated based on the predicted turbidity. example of. Predicted turbidity Tu when the coagulant injected water reaches the outlet of the sedimentation tank 2 cal (hereinafter referred to as "predicted precipitation water turbidity Tu 2 cal ”) According to the treated water turbidity Tu 1 to operate. The configuration or processing of the coagulant injection control system 10 is the same as that of Embodiment 1, but the processing of the injection rate correction function 153 is different.

[0140] Next, the injection rate correction function 153 in the second embodiment will be described. Figure 7 The processing flow of the injection rate correction function 153 in the second embodiment is...

Embodiment 3

[0157] Embodiment 3 is an example in which measurement items measured by sensors are added to the coagulant injection control system of Embodiment 1. The measurement item added in Example 3 is the ultraviolet absorbance E of raw water 410 260 and the turbidity Tu of sedimentation water 480 2 (hereinafter referred to as "sedimentation water turbidity Tu 2 ”), and used in the calculation of the injection rate correction function 153.

[0158] Figure 9 The structure of the coagulant injection control system in Example 3 is shown. The coagulant injection control system 10 of Embodiment 3 has the same structure as the coagulant injection control system of Embodiment 1, but as Figure 9 As shown, the measured sediment water turbidity Tu 2 The difference is that the second turbidity sensor (outlet-side turbidity sensor) 570 is installed at the outlet of the sedimentation tank 470 .

[0159] In addition, the raw water sensor 420 of embodiment 3 also measures the ultraviolet abs...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides an agglomerant transfusion control system capable of calculating a suitable agglomerant transfusion amount under a condition of further shortening a time delay of feedback correction and being used for high turbidity raw water. The agglomerant transfusion control system for a water purification plant to remove flocs from the raw water that the agglomerant is transfused to form flocs, comprises a raw water sensor to measure water amount and water quality of the raw water before the agglomerant is transfused; a flocs grading plant to grade the agglomerant transfused water collected from an upstream side relative to an outlet of a settling pond so as to obtain stage treatment water; a stage treatment water turbidity sensor to measure the turbidity of the stage treatment water; a management mechanism having a transfusion rate operation function for calculating the transfusion rate of the agglomerant based on the water quality of the raw water, and a transfusion rate correcting function for calculating a correct value according to the turbidity of the raw water and the turbidity of the stage treatment water so as to determine the transfusion amount of the agglomerant; a medicament transfusion mechanism to control a medicament transfusion device according to the transfusion amount of the agglomerant determined by the management mechanism.

Description

technical field [0001] It relates to the monitoring and control system of water purification treatment facilities, especially the system for controlling the injection amount of coagulant. Background technique [0002] In the water purification plant, a coagulation and sedimentation treatment is implemented: by injecting a coagulant into the raw water taken out, the turbidity in the raw water is partially coagulated to form flocs, and the generated flocs are settled and separated through the sedimentation tank. The precipitated water after settling and separating the flocs is introduced into the next water purification facility, which is the filter tank, and is filtered. In this coagulation-sedimentation treatment, the coagulant injection rate determined according to the raw water quality is important. When surface water such as rivers or lakes is used as raw water, the quality of the raw water changes due to meteorological conditions or seasons. Therefore, in order to obtai...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G05B19/04C02F1/52
Inventor 三宫丰横井浩人芳贺铁郎阴山晃治田所秀之馆隆广
Owner HITACHI LTD