Multi -level aeration sewage treatment experimental device

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

Inlet water pH value of 6-8 water 6-8

1. Product characteristics

1. Project practicalization: Taking typical actual parts as tr--ning objects;

2. Systematic functional: look at the tr--ning mode of trinity of parts, parts, and parts drawing, and parts drawing;

Views, three views, and multi -view parts from simple to complex tr--ning.

3. The popularization of students: small, combined, portable tr--ning devices, a group of two or three people, so that as much as possible students get

Full tr--ning opportunities;

4. Standardization of teaching: supporting and guidance books, teaching and learning are very convenient, and the teaching effect is significant;

5. Management convenience: parts, measurement tools and guidance books are placed in a refined box, which is very convenient to manage.

2. Product parameters

"Typical Parts" measured drawing tr--ning combination device

Ineximum parameter project parameters

The size 40 × 30 × 7cm weight 5 (kg)

Typical parts

(24 pieces/set) One view parts: light shaft, copper sleeve, pad, etc.

Two view parts: rectangular, bonding slot shaft, belt wheel, method bar, couplet, bracket, etc.

Three view parts: base, low -speed shaft, bearing seat, etc.

Multi -view parts: piston, valve body, etc.

Measurement toolbar card ulnar, outer diameter, thousands of points, arc models and other types of portable portfolios (detection parts, measurement tools, and guidance books are placed in a refined color comprehensive box)

Teaching data tr--ning guidance and tr--ning report (including electronic drafts);