DY-272 A2/O phosphorus and nitrogen removal process training platform
Release time：2024-06-24 20:30viewed：times
1. Experimental purpose:
According to the national [Comprehensive Sewage Discharge Standard] (GB8978-1996), the secondary standard for the maximum allowable discharge concentration of ammonia nitrogen is 25 mg/L, and the secondary standard for the maximum allowable discharge concentration of phosphate (in terms of P) is 1.0 mg/L. The anaerobic-anoxic-aerobic (A2O) process is the m*nstream process of sewage phosphorus and nitrogen removal technology. Compared with conventional activated sludge, it can not only biologically remove BOD, but also remove nitrogen and phosphorus, which plays an important role in preventing the aggravation of eutrophication of water bodies. This device is a teaching demonstration and dynamic experimental equipment for the A2O process. The following objectives are expected to be achieved through the device experiment:
1. To understand the composition and operation points of the A2O process;
2. To determine the operation parameters with high removal rate and energy saving to guide production operation;
3. To make accurate judgments on the impact of some industrial pollution sources on the operation of the process to avoid major accidents;
4. To use practical experience to tr*n students, technicians, and operators, assess their independent work ability, and improve the technical quality of personnel and the level of enterprise management; 5. To take advantage of the convenient transportation of the device, the feasibility test of sewage
treatment can be carried out at the site of the proposed sewage treatment plant . 2. M*n technical indicators and parameters: (reference parameters) 1. Ambient temperature: 5℃～40℃ 2. Processed water volume: 8～16L/h 3. Designed inlet and outlet water quality: Inlet BOD5 150～300mg/L Outlet 15～30 mg/L Inlet COD 300～600mg/L Outlet 30～60 mg/L Inlet SS 80～160mg/L Outlet 8～16 mg/L Inlet pH 6～9 Outlet 6～9 4. Device dimensions: 2200 mm×400 mm×1500mm 5. Working power supply: AC220V±10%, 50Hz, single-phase three-wire, power 500W, safety protection: with grounding protection, leakage protection, overcurrent protection, 3. M*n configuration: 1. 1 raw water tank: white PP board material, thickness 10mm, 500×400×500mm, with a dr*n valve installed on the bottom plate to dr*n the water; 2. 1 clean water tank: white PP board material, thickness 10mm, 350×400×450mm, with a dr*n valve installed on the bottom plate to dr*n the water; 3. 1 raw water tank stirring motor , 1 set of 304 st*nless steel stirring paddle; (power 15W, speed 120rpm), (including 1 speed regulator) 4. 1 anti-corrosion lifting magnetic water pump, flow: 27~32 (L/min), head: 3.1~4.3 (m) power 20W; 5. Anaerobic tank: transparent plexiglass material, wall thickness 8mm, Ø 300×500mm; with stirring device 6. Anoxic tank: transparent plexiglass material, wall thickness 10mm, 300×300×500mm, with stirring device; 7. Aerobic tank: made of transparent organic glass, thickness 10mm, 400×300×500mm; with mixed liquid return pump; 8. Secondary sedimentation tank: made of transparent organic glass, wall thickness 5mm, Ø 250×400mm; with sludge return pump; 9. 1 *r pump, power: 40 W, maximum gas volume: 16L/min, with 1 set of microporous aeration tubes; 10. 1 dosing metering peristaltic pump, flow range: 0.008-460mL/min, equipped with 1 organic glass dosing box; 11. 1 sludge return peristaltic pump, flow range: 0.008-460mL/min; 12. 1 anti-corrosion mixed liquid return pump, flow: 16~19 (L/min), head: 2.7~3.4 (m) power 20W; 13. 2 motor stirrers, 2 sets of 304 st*nless steel stirring paddles (power 6W, speed 120rpm), 2 speed regulators, 14. Flow measurement and regulation: 1 water inlet liquid flow meter: range 2-20L/H, 1 gas flow meter: range 250~2500L/h; 15. 1 set of programmable automatic controller, 16. Experimental table (white 10mm thick PP board), 17. Power supply control system: 1 double-sided matte dense gr*n spray plastic electric control box, leakage protector (Delixi brand), voltmeter, lockable button switch, wire pipe, etc., 18. Matching UPVC connecting pipes and valves (Zhongc* brand). 19. St*nless steel frame experimental table (30mm×30mm st*nless steel square tube, equipped with casters for universal wheels with locking feet), etc. 20. 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, the contents are as follows: A. Wet alarm system 1. System overview: Overview of the wet alarm system 2. Equipment awareness: It has the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (6 built-in multiple-choice questions, with prompts for correct and wrong choices), schematics (you can enter the device from the schematics). The equipment includes: sprinklers, water flow indicators, signal butterfly valves, exhaust valves, fire alarm controls, high-pressure pressure gauges, high-level water tanks, weia control cabinets, pressure-stabilizing tanks, flow switches, end water testing devices, dr*nage facilities, water pump couplers, hydraulic alarms, delay devices, wet alarms, butterfly valves, check valves, fire
Pump, safety pressure regulating valve, fire water pool.
3. Principle display: Display 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 exercise module (built-in 4 multiple-choice questions, both correct and wrong choices are prompted)
4. Design layout: There are multiple-choice questions and calculation questions, each question is scored, and the correct answer and score are 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 (built-in 8 multiple-choice questions, both correct and wrong choices are prompted), schematic diagram (you can enter the equipment from the schematic diagram). 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, selection valves, smoke alarms, and fire alarm controllers.
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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