Complete hybrid aeration and precipitation pool training table

1. Through the operation of the system, you can deepen the understanding of the characteristics and operation of the processing system.

2. Familiar with and understand the control method of active sludge h--r treatment system. Further understand the control parameters such as sludge load, sludge order, and dissolving oxygen concentration and the role and significance in actual operation.

2. Working principle:

Active sludge is one of the m--n methods of sewage treatment. Judging from the current status of sewage treatment at home and abroad, most urban sewage and almost all industrial wastewater are treated with active sludge. Therefore, this experimental method is particularly important.

The active sludge treatment system is fully mixed with mixed aeration sedimentation tank. It has the advantages of strong resistance to impact load, uniform water quality in the aeration tank, balanced oxygen demand, equal sludge load, similar microorganisms and low motion consumption, but but but Microorganisms have low degradation to organic matter, which is prone to expansion of sludge, and the water out of water is slightly worse.

3. Complete hybrid aeration pool:

Fully hybrid aeration tanks often use impeller oxygen supply, mostly round, square or polygonal pools, which are suitable for the range of the impeller. Change the diameter of the impeller can adapt to different diameter (length) and different depth pools. The rectangular aeration pool can be divided into a series of square units that are connected to each other, and each unit is set with a impeller.

4. M--n technical indicators and parameters:

1. Environmental temperature: 5 ℃ ～ 40 ℃

2. Treatment of water: 20 ～ 30L/h

3. Puzzle uses copper pump -shaped impeller: D = 100

4. Leaf wheel speed: (can be adjusted at any speed) 50 ～ 60R/min

5. Sewage stay in the pool: 4-6h

6. Design in and out of water:

Inlet water BOD5 160 ～ 320mg/L out of water 16 ～ 40 mg/L

CODCY 300 ~ 500mg/L out of water 30 ～ 50 mg/L

Inlet water SS 80 ~ 160 mg/L out of water 8 ～ 20 mg/L

1. System profile

This experimental system is divided into two parts: automatic water -spraying fire extinguishing system, fire hydrant system and fire alarm linkage control center. As shown in the figure:

1) The fire hydrant system is arranged to a temporary high -pressure system, consisting of low fire water tanks, roof fire water tanks, fire water pumps, stabilizing pressure pressure voltage equipment, fire hydrants, water bands, water guns, etc. You can demonstrate the basic composition of the fire hydrant system, and the principle of starting and operating the system when the fire occurs;

2) Water spraying fire extinguishing system and fire hydrant system shall share low fire water tanks and roof fire water tanks, and will be used by fire water pumps, voltage voltage voltage voltage equipment, --r pumps, wet alarm valves, dry alarm valves, r--n lever alarm valves, pre -use alarm valve , Water flow index, nozzle, and end -end water testing device form a complete automatic water spray fire extinguishing system, which can demonstrate the composition and working principle of wet automatic water spraying, dry, r--ny, pre -effective fire extinguishing system.

3) Fire alarm linkage control center realizes the automatic control of the fire pump start -stop, pressure switch, water current indicator and other action -linked fire alarms and control fire pump start -stop functions.

Second, system module combination solution

The fire hydrant and automatic water injection fire extinguishing system of this construction fire demonstration system are used in front of the alarm valve. The alarm valve can be divided into a fire hydrant fire extinguishing system and a wet automatic water spray fire extinguishing system. The water spray fire extinguishing system and pre -use system automatic water spray fire extinguishing system, water spray automatic water spray fire extinguishing system, automatic water spray fire extinguishing system in the water curt--n ceremony.