Activated sludge aerobic respiration measuring device capable of self-checking and calibration and using method
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of activated sludge and measuring devices, which is applied in soil material testing, material inspection products, etc., and can solve problems such as unstable dissolved oxygen measurement values, large measurement errors, and low testing accuracy
Inactive Publication Date: 2015-08-12
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
View PDF4 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, the water flow in the dissolved oxygen measurement chamber is perpendicular to the surface of the dissolved oxygen sensor membrane, resulting in instability of the measured value of dissolved oxygen, and the calibration steps of the two dissolved oxygen sensors are completed before the sample is added, which cannot be realized. Dynamic self-checking during measurement
At the same time, the two dissolved oxygen sensors are prone to electrode drift during the measurement process. In different dissolved oxygen concentration ranges, the difference in the measured values of the two dissolved oxygen sensors will change, and with the extension of the measurement time The measurement status will change, so it is not enough to calibrate the dissolved oxygen sensor before the measurement starts, and there will be large measurement errors
[0032] In the actual operation of the above respiration measurement method and device, there are defects such as low test accuracy and large measurement error.
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0073] When using sodium acetate with a concentration of 200mgCOD / L as the organic substrate to test the oxygen consumption rate of the activated sludge aerobic process, proceed as follows:
[0074] (1) Add 6L of activated sludge into the aeration chamber, turn on the peristaltic pump, adjust the flow rate to 750ml / min, and make the activated sludge circulate through the pipeline flow control system in the aeration chamber, measurement chamber and breathing chamber.
[0075] (2) Set the control temperature to 20±0.5°C, control the pH value to 7.0±0.5, turn on the aeration pump, feed air into the aeration chamber, and turn on the magnetic stirrer at the bottom of the breathing chamber to make the mixture even.
[0076] (3) When the temperature and pH of the system are stable, turn on the dissolved oxygen test sensor to measure the change of the dissolved oxygen concentration at the inlet and outlet of the breathing chamber. The measured values of the sensors are recorded ever...
Embodiment 2
[0091] When using urban sewage as the organic substrate to test the oxygen consumption rate of the activated sludge aerobic process, proceed as follows:
[0092] (1) Add 4L of activated sludge into the aeration chamber, turn on the peristaltic pump, adjust the flow rate to 750ml / min, and make the activated sludge circulate in the aeration chamber, measurement chamber and breathing chamber through the pipeline flow control system.
[0093] (2) Set the control temperature to 20±0.5°C, control the pH value to 7.0±0.5, turn on the aeration pump, feed air into the aeration chamber, and turn on the magnetic stirrer at the bottom of the breathing chamber to make the mixture even.
[0094] (3) When the temperature and pH of the system are stable, turn on the dissolved oxygen test sensor to measure the change of the dissolved oxygen concentration at the inlet and outlet of the breathing chamber. The measured values of the sensors are recorded every 5s.
[0095] (4) Heat the urban se...
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
Login to view more
Abstract
The invention discloses an active sludge aerobic respiration measuring device capable of being self-examined and corrected and an application method thereof, which belongs to the technical field of sewage treatment. The measuring device comprises an aeration chamber, a respiration chamber, a measuring chamber, a constant-temperature system, a pH control system and a pipeline flow-direction control system. An outlet of the aeration chamber bypasses a peristaltic pump and is sequentially connected with the measuring chamber, an inlet of the respiration chamber, an outlet of the respiration chamber, the other measuring chamber and an inlet of the aeration chamber through the pipeline flow-direction control system to form a circulating loop. The pipeline flow-direction control system consists of four normally open electromagnetic valves, four normally closed electromagnetic valves, a time relay and a connecting pipe and is a key part for the system to achieve the dynamic self examination and correction function of a soluble oxygen sensor. The dissolved oxygen measuring effect can be detected in real time in the running process of a reactor through the pipeline flow-direction control system, the dissolved oxygen measuring valve is verified, the problem that the dissolved oxygen sensor is drifted can be overcome, and the OUR (oxygen utility rate) calculation precision can be improved.
Description
technical field [0001] The invention relates to an activated sludge aerobic respiration measuring device and application method, which has the function of self-inspection and correction, and can accurately measure the oxygen utilization rate (OxygenUtilityRate, OUR for short) of activated sludge degrading organic matter in an aerobic state, and is suitable for water The experimental research on the kinetics of activated sludge in the treatment process, including the characterization of activated sludge characteristics, the analysis of the kinetic parameters of organic pollutant degradation, and the analysis of energy consumption during the aerobic degradation of organic pollutants, etc., belongs to the field of sewage treatment technology. Background technique [0002] The respiration measurement method is an effective tool and method for measuring the amount of dissolved oxygen consumed by microorganisms per unit time and unit volume (OUR) in activated sludge, and is often u...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
Inventor 刘俊新李衍博肖本益韩云平王旭
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
Login to view more 
Login to view more