DY-133 Dynamic Concrete Training Platform
Release time：2024-06-26 01:00viewed：times
1. Experimental purpose:
By adding chemical coagulants to some water samples (water supply and dr*nage), coagulation stirring and sedimentation tests are carried out. Due to the different water quality of water samples, the coagulation effect is also different. This experiment is required to achieve the following purposes:
1. Learn to obt*n the optimal process conditions of the coagulation process, that is, the optimal pH value, the optimal coagulant and the basic method of the optimal dosage.
2. Through experiments, deepen the understanding of the coagulation mechanism and inclined tube sedimentation.
2. Experimental principle:
The colloidal particles in water are m*nly negatively charged clay particles. The electrostatic repulsion between colloids, the Brownian motion of colloid particles and the hydration of the surface of colloid particles make the colloid particles have dispersion stability. Among the three, the electrostatic repulsion has the greatest influence. Therefore, colloidal particles cannot be removed by natural precipitation. Adding coagulants to water can provide a large number of positive ions, compress the diffusion layer of the micelle, reduce the zeta potential, and reduce the electrostatic repulsion. At this time, the Brownian motion electrical stability factor is transformed into an unstable factor, which is also conducive to the adsorption and coagulation of colloid particles.
In the water with coagulant added, the colloidal particles destabilize and aggregate with each other, gradually becoming larger flocs. At this time, the water flow velocity gradient G value plays a major role. For specific calculations, see relevant textbooks.
3. M*n technical indicators and parameters:
1. Ambient temperature: 5℃～40℃
2. Processed water volume: 10～30L/h
3. Influent turbidity: 50～300mg/L
4. Effluent turbidity: 10～40mg/L
Note: The effect is better when the water temperature is high, and the effect is worse when the water temperature is low.
5. Device dimensions: 1200mm×400mm×1600mm,
6. Working power supply: AC220V±10%, 50Hz, single-phase three-wire system, power 300W, safety protection: with grounding protection, leakage protection, overcurrent protection,
4. M*n configuration:
1. 1 waste water tank: white PP board, thickness 10mm, with a dr*n valve on the bottom plate, which is convenient for dr*ning water,
2. 1 clean water tank, white PP board, thickness 10mm, with a dr*n valve on the bottom plate, which is convenient for dr*ning water,
3. 1 neutralization tank (with stirring), transparent plexiglass material, thickness 10mm,
4. 1 set of high-level regulating tank, transparent plexiglass material, thickness 10mm,
5. 1 set of coagulation tank, transparent plexiglass material, thickness 10mm,
6. 1 set of flocculation reaction tank (with stirring), transparent plexiglass material, thickness 10mm,
7. Inclined plate sedimentation tank, transparent plexiglass material, thickness 10mm,
8. 1 set of polypropylene inclined tubes;
9. 2 motor stirrers, 2 sets of 304 st*nless steel stirring paddles: power 6W, speed 150rpm;
10. 1 raw water tank with motor stirrer, 1 set of 304 st*nless steel stirring paddles: power 15W, speed 90rpm;
11. 3 speed regulators
12. 1 anti-corrosion lifting water pump: flow: 27~32 (L/min), head: 3.1~4.3 (m);
13. 2 dosing peristaltic pumps, flow range: 0.008-460mL/min, 2 drug storage tanks;
14. Flow measurement and regulation: pipeline flowmeter, 1 sewage flowmeter, range: 10~100L/h;
15. Power control system: 1 double-sided matte dense pattern spray-coated electric control box, leakage protector (Delixi brand), voltmeter, lockable button switch, wire pipe, etc.
16. Matching UPVC connecting pipes and valves (Zhongc* brand).
17. St*nless steel frame test bench (30mm×30mm st*nless steel square tube, with universal casters with locking feet).
18. Virtual simulation software for electrical installation of building and intelligent building Designed based on unity3d, users can choose different sizes of interactive interface according to computer configuration, 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, as follows: A. Wet alarm system 1. System overview: Overview of wet alarm system 2. Equipment recognition: It has 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), schematic diagram (you can enter the equipment from the schematic diagram). The equipment includes: sprinkler, water flow indicator, signal butterfly valve, exhaust valve, fire alarm control, high pressure gauge, high-level water tank, weiya control cabinet, pressure regulating tank, flow switch, terminal water testing device, dr*nage facility, water pump coupler, hydraulic alarm, delay device, wet alarm, butterfly valve, check valve, fire pump, safety pressure regulating valve, fire water pool. 3. Principle demonstration: Demonstrate the working principle of the wet alarm system, 3D animation demonstration, 3D model is semi-transparent, and the internal water flow can be seen. Equipped with practice module (4 built-in multiple-choice questions, with prompts for correct and wrong choices) 4. Design layout: There are multiple-choice questions and calculation questions, each question 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 recognition: It has the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (8 built-in multiple-choice questions, with prompts for correct and wrong choices), and schematics (you can enter the equipment from the schematics). The equipment includes: nozzles, HFC-227 storage bottles, bottle head valves, heptafluoropropane check valves, high-pressure hoses, gas check valves, safety valves, weighing alarms, electromagnetic starters, selector valves, smoke alarms, and fire alarm controllers.
3. Principle display: It shows the working principle of the gas fire extinguishing system, with a three-dimensional animation demonstration and a semi-transparent three-dimensional model, so that the internal gas can be seen. It is equipped with an exercise module (3 built-in multiple-choice questions, with prompts for correct and wrong choices)
4. Design layout: There are 6 multiple-choice questions, each of which is scored. After submission, the correct answer and score will be displayed.
C. Escape drill: Teaching is carried out in the form of fun games. Escape from the burning room within a limited time. If you make a wrong choice, you will directly enter the score interface.
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