DY-218 Multi-stage Aeration Sewage Treatment Training Platform
Release time：2024-06-23 05:30viewed：times
1. Experimental purpose:
1. Through the operation of this system, we can deepen our understanding of the characteristics and operation rules of the treatment system.
2. Be familiar with and understand the control method of the activated sludge treatment system. Further understand the control parameters such as sludge load, sludge order, dissolved oxygen concentration and their role and significance in actual operation.
2. Working principle:
Activated sludge is one of the m*n methods for sewage treatment. From the current status of sewage treatment at home and abroad, most urban sewage and almost all industrial wastewater are treated with activated sludge. Therefore, this experimental method is particularly important. The
completely mixed aerated sedimentation tank in the activated sludge treatment system has the advantages of strong impact load resistance, uniform water quality in the aeration tank, balanced oxygen demand rate, equal sludge load, similar microbial composition and low dynamic consumption, but the microorganisms have low degradation ability for organic matter, easy to produce sludge expansion, and the effluent water quality is slightly poor.
3. Completely mixed aeration tank:
Completely mixed aeration tanks often use impellers to supply oxygen, and are mostly circular, square or polygonal tanks as units, which is adapted to the range of action of the impeller. Changing the diameter of the impeller can adapt to the needs of pools of different diameters (side lengths) and depths. A rectangular aeration tank can be divided into a series of interconnected square units, each of which is equipped with an impeller.
IV. M*n technical indicators and parameters:
1. Ambient temperature: 5℃～40℃
2. Treated water volume: 20～30L/h
3. Aeration adopts copper pump-shaped impeller: D＝100
4. Impeller speed: (can be adjusted arbitrarily) 50～60r/min
5. Sewage retention time in the pool: 4～6h
6. Designed inlet and outlet water quality:
Inlet BOD5 160～320mg/L Outlet 16～40 mg/L
Inlet CODCY 300～500mg/L Outlet 30～50 mg/L
Inlet SS 80～160mg/L Outlet 8～20 mg/L
Inlet pH 6～8 Outlet 6～8
7. Overall dimensions: 2300mm×400mm×1300mm,
8. Working power supply: AC220V±10%, 50Hz, single-phase three-wire system, power 1000W, safety protection: with grounding protection, leakage protection, overcurrent protection,
V. M*n configuration:
1. 1 raw water tank: white PP board material, thickness 10mm, 500×400×550mm, a dr*n valve is installed on the bottom plate to dr*n the water;
2. 1 clean water tank: white PP board material, thickness 10mm, 400×400×500mm, a dr*n valve is installed on the bottom plate to dr*n the water;
3. Equipped with 1 raw water tank stirring motor and 1 set of 304 st*nless steel stirring paddle; (power 25W, speed 120rpm), (including 1 speed regulator)
4. 4 sets of aeration reaction tanks, including aeration devices, transparent plexiglass material, thickness 7mm, Ø300×400mm;
5. 2 sets of sedimentation tanks, made of transparent organic glass, with a wall thickness of 7mm and a diameter of 250×300mm;
6. 1 set of anti-corrosion lifting magnetic water pump, with a flow rate of 16-19 (L/min), a head of 2.7-3.4 (m) and a power of 20W;
7. 1 set of *r compressor (power supply 220V, power 550W, exhaust volume 36L/min, pressure 0.4-0.8MPa; gas volume 8L),
8. Flow measurement and regulation: 1 rotor flowmeter (LZS-15, range 6-60L/h)
9. Flow measurement and regulation: 2 gas flowmeters (LZB-10, range 250-2500L/h)
10. Experimental table (white 10mm thick PP board),
11. Power control system: 1 double-sided matte dense pattern spray-p*nted electric control box, a leakage protector (Delixi brand), a voltmeter, a lockable button switch, a wire pipe, etc.,
12. Equipped with UPVC connecting pipes and valves (Zhongc* brand).
13. St*nless steel frame test bench (30mm×30mm st*nless steel square tube, with casters for universal wheels with locking feet).
14. Virtual simulation software for electrical installation of building and intelligent building Based on unity3d design, users can choose different sizes of interactive interfaces 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). Equipment includes: sprinkler, water flow indicator, signal butterfly valve, exhaust valve, fire alarm control, high pressure gauge, high-level water tank, Wia control cabinet, pressure regulating tank, flow switch, terminal water testing device, dr*nage facilities, water pump connector, hydraulic alarm, delay, 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 (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. 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: There are optimal viewing angles, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (8 built-in multiple-choice questions, with prompts for correct and incorrect 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: Display the working principle of the gas fire extinguishing system, 3D animation demonstration, and semi-transparent 3D models so that 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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