DY-252 Breakpoint Chlorination Disinfection Training Platform
Release time：2024-06-25 11:30viewed：times
1. Experimental purpose:
After the water purification process of coagulation, sedimentation or clarification, filtration, etc., most of the suspended matter in the water has been removed, but there are still a cert*n number of microorganisms, including pathogens that are harmful to the human body, in the water. Disinfection methods are often used to kill these pathogenic microorganisms.
There are many methods for water disinfection, and the most commonly used method is chlorine disinfection. This experiment uses chlorine disinfection for water sources with bacteria and ammonia nitrogen in the water.
The following objectives are expected to be achieved through the experiment:
1. Understand the basic principles of chlorine disinfection;
2. Master the calculation method of chlorine addition and chlorine requirement;
3. Master the basic method of chlorine and ammonia disinfection.
2. Experimental principle:
After chlorine and bleaching powder are added to water, the following reaction occurs:
Cl2+H2O ⇌ HOCl+HCl (16-1)
2CaOCl2-2H2O ⇌ 2HOCl+Ca（OH）2+CaCl2 (16-2)
The m*n disinfectant is HOCl.
If there are no bacteria, ammonia, organic matter and reducing substances in the water, all the chlorine added to the water exists in the form of free chlorine, and the residual chlorine is equal to the amount of chlorine added.
Because there are organic matter and a considerable amount of ammonia nitrogen compounds in the water, their properties are very unstable and often undergo chemical reactions to gradually transform into ammonia. Ammonia is free or exists in the form of ammonia salts in the water.
After chlorination, the chlorine and ammonia generate "combined" chlorine, which also has a disinfecting effect. According to the ammonia content in the water, the pH value and the amount of chlorine added, the relationship between the amount of chlorine added and the residual chlorine will appear in four stages, that is, four intervals .
3. M*n technical indicators and parameters:
Device dimensions: length 700mm width 400mm height 800mm
building building and intelligent building electrical installation virtual simulation software
Based on unity3d design, users can choose different sizes of interactive interfaces according to computer configurations, and can choose six levels of image quality. The model in the software can be rotated 360°, enlarged, reduced, and translated. There are assistant prompts during the use of the software, the contents are as follows:
A. Wet alarm system
1. System overview: Overview of wet alarm system
2. Equipment recognition: It is equipped with the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (built-in 6 multiple-choice questions, with prompts for correct and wrong choices), and schematic diagrams (you can enter the equipment from the schematic diagram). The equipment includes: sprinklers, water flow indicators, signal butterfly valves, exhaust valves, fire alarm controls, high-pressure gauges, high-level water tanks, Wia control cabinets, pressure-stabilizing tanks, flow switches, terminal water testing devices, dr*nage facilities, water pump connectors, hydraulic alarms, time delays, wet alarms, butterfly valves, check valves, fire pumps, safety pressure-stabilizing valves, and fire water tanks.
3. Principle display: Display the working principle of the wet alarm system, 3D animation demonstration, and semi-transparent 3D models , so that the internal water flow can be seen. Equipped with practice module (built-in 4 multiple-choice questions, with prompts for correct and wrong choices)
4. Design layout: There are multiple-choice questions and calculation questions, each of which is scored, and the correct answer and score will be displayed after submission
B. Gas fire extinguishing system
1. System overview: Overview of gas fire extinguishing system
2. Equipment cognition: It is equipped with the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), practice (built-in 8 multiple-choice questions, with prompts for correct and wrong choices), schematic diagram (you can enter the equipment from the schematic diagram). The equipment includes: nozzle, HFC-227 storage bottle, bottle head valve, heptafluoropropane check valve, high-pressure hose, gas check valve, safety valve, weighing alarm, electromagnetic starter, selection valve, smoke alarm, fire alarm controller.
3. Principle display: Display the working principle of the gas fire extinguishing system, 3D animation demonstration, 3D model is semi-transparent, and the internal gas can be seen. Equipped with practice module (built-in 3 multiple-choice questions, with prompts for correct and wrong choices)
4. Design and layout: There are 6 multiple-choice questions, each with scores, and the correct answer and score will be displayed after submission
. C. Escape drill: Teaching in the form of fun games, escape from the burning room within a limited time, and wrong choices will directly enter the score interface.
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