DY-231 Integrated membrane filtration and reverse osmosis training platform
Release time：2024-06-23 22:00viewed：times
1. Experimental purpose:
1. Deepen the understanding of the treatment method of this process.
2. Master the performance of the operation of this process and the first-hand technical data of the test, and use reliable information in production.
3. Enable operators to improve theoretical and practical knowledge.
2. Experimental principle:
The front of this device is coagulation and sand filtration.
The presence of a large number of colloidal particles (also known as SS) in natural water and sewage is an important reason for the turbidity of water. Colloidal particles cannot be removed by natural precipitation
. The colloidal particles in water are m*nly negatively charged clay particles. The electrostatic repulsion between colloid particles, the Brownian motion between 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. Adding coagulants to water can provide a large number of positive ions, compress the diffusion of micelles, reduce the ζ potential and reduce the electrostatic repulsion. At this time, the Brownian motion changes from a stable factor to an unstable factor. It is also conducive to the adsorption and condensation of colloid particles. In short, the process of adding coagulants until a large alum flower is formed is called coagulation.
The lime sand filter layer in the sand filter column has a particle size of 0.3 to 2 mm, which can intercept alum flowers and impurities in the water whose particle size is much smaller than the pores of the filter material. When the filtration head loss reaches the maximum allowable head loss, the filter column needs to be backwashed. There is no fixed time for the backwash cycle, which depends on the turbidity of the water.
The principle of the integrated membrane is very simple. Most of them use polypropylene hollow fiber membranes and aromatic polyamide RO membranes to filter water. The better the water quality, the greater the electrical energy. The membrane filtration is American technology.
3. M*n technical indicators and parameters:
1. Ambient temperature: 5-40℃
2. Processed water volume: 150-200L/h
3. CODCY inlet: 300-500mg/L outlet: 15-30mg/L
4. BOD5 inlet: 100-250mg/L outlet: 10-20mg/L
5. Turbidity inlet: 50o-200o outlet: 1o-5o
6. SS suspended solids inlet: 50-100mg/L outlet: 0.5-1mg/L
7. PH value: 6.5-8.5
8. Device dimensions: 2800mm×600mm×1700mm,
9. Working power supply: AC220V±10%, 50Hz, single-phase three-wire system, power 1500W, safety protection: with grounding protection, leakage protection, overcurrent protection
IV. M*n configuration:
1. 1 raw water tank: white PP board material, thickness 8mm, specification Ø700mm×900mm, 250L, a dr*n valve is installed on the bottom plate to facilitate water dr*nage;
2. 1 intermediate water tank: white PP board material, thickness 10mm, specification 700mm×500mm×700mm, a dr*n valve is installed on the bottom plate to facilitate water dr*nage;
3. 1 clean water tank: white PP board material, thickness 8mm, specification Ø500mm×700mm, 80L, a dr*n valve is installed on the bottom plate to facilitate water dr*nage;
4. Equipped with 1 raw water tank stirring motor , 1 set of 304 st*nless steel stirring paddle; (power 25W, speed 120rpm), (including 1 speed regulator) 1, 5. 1 set of coagulation box, transparent organic glass material, wall thickness 10mm, 300×300×450mm, including 1 set of motor stirring device; (power 6W, speed 150rpm, including 1 speed regulator),
6. 1 set of sand filter column, including 1 batch of fillers, transparent organic glass material, wall thickness 8mm, specification: Ø 150×1800mm; including 1 set of aeration device,
7. 1 hollow fiber ultrafiltration membrane, specification HM90; UF4040, Ø100mm×1000mm,
8. 1 sodium filtration composite membrane, specification 1900GDP ESNA2-4040, Ø100mm×1000mm,
9. 1 reverse osmosis composite membrane, specification 2300GDP ESPA1-4040, Ø100mm×1000mm,
10, 1 ceramic membrane, specification Ø50mm×1000mm,
11, 304 st*nless steel water pumps 3, power supply: 220 V, power 370W,
12, *r compressor 1 (power supply 220V, power 550W, maximum gas volume: 36L/min, gas volume 8L),
12, flow measurement and regulation: 3 rotor flow meters, (0.06~0.6m3/h)
13, flow measurement and regulation: 1 gas flow meter, (LZB-10, range 250~2500L/h)
14, 1 dosing metering peristaltic pump, flow range: 0.008-460mL/min, equipped with 1 organic glass dosing box,
15. Power supply control system: 1 double-sided matte dense-gr*ned spray-coated electric control box, leakage protector (Delixi brand), voltmeter, lockable push 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), etc.
18. Virtual simulation software for electrical installation of building buildings and intelligent buildings 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 incorrect 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, timers, wet alarms, butterfly valves, check valves, fire pumps, safety pressure-stabilizing valves, and fire water tanks.
3. Principle display: Displays the working principle of the wet alarm system, 3D animation demonstrations, 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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