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WSH Municipal waste water treatment equipment series
 

 

Scope of Application
It is suitable to be used in living quarter, restaurant, guest house, sanatorium, school and mine and factory etc. for treating domestic sewage and industrial waste water.

Features of Equipment:
It can be buried underground;
Fully automatically controlled, no necessary to arrange any operators;
No back flow of sludge;
Simple operation and easy for maintenance;
Low noise and no foreign smell;
Long service life.

Types and Specifications:
The underground types of domestic sewage disposal equipment manufactured by our company are WSZ-A module type and WSZ-F glass fiber reinforced plastics series, with more than 30

varieties and treating volume 0.5
100m3/H.

WSZ-A Module Type:

1. Description for Technology

WSZ-A equipment is mainly designed for treating domestic sewage and the similar organic industrial sewage, the disposal method is to adopt the current matured biochemical disposal technique------contact oxidation method, its water quality parameter is referred to the ordinary domestic water quality, water inflow is designed BOD 20Omg/l and water outlet BOD 20mg/l. It is composed of 6 parts: (1) primary sedimentation tank; (2) contact oxidation tank; (3) secondary sedimentation tank; (4) sterilization tank and device; (5) sludge tank; (6) air blower chamber and blower.

The following is the details:

(1) Primary sedimentation tank: it is designed vertical flow type, the ascending flow rate of sewage on the tank is 0.6-0.7 mm/second, and the precipitated sludge will be sent to sludge tank by air. (Note: no primary sedimentation tank is set for WSZ-A 0.5-5m3/h).

(2) Contact oxidation tank: after primary sedimentation, water will self-flow into contact tank for biochemical treatment. The contact tank is divided into 3 levels, the total remaining time is more than 1 hour and contact oxidation time of reinforced equipment may reach 6 hours, and stuffing is new ladder-type, without coating formed and no blockage. The surface area of stuffing is 160m2/m3 and gas and water ratio in contact tank is around 12:1. (Note: contact tank for WSZ-A0.5-5T/h is secondary one)

(3) Secondary sedimentation tank: Sewage will flow into it after biochemical treatment. It is divided into two vertical flow-type sedimentation tanks and paralleled operated. The ascending flow rate is 0.3-0.4mm/second. Sludge is discharged by air and lifted to sludge tank. (Note: WSZ-A 0.5-5T/h, sludge will self-flow into sludge tank)

(4) Sterilization tank and device: It should be operated according to the norm: "TJ14-74-30 minutes, if sewage is from hospital, the sterilization tank may be increased remaining time to 1-1.5 hours. Solid chlorine pill-contact-dissolving method is adopted for sterilization, the dosing should be continuously changed according to water amount discharged into sterilization tank, more water more chemicals. As for other sterilization device, chemicals can be dosed in different ways. (Note: no necessary for industrial sewage sterilization tank and device)

(5) Sludge tank: All the sludge from the primary and secondary tanks can be lifted into WSZ-A sludge tank for aerobic digestion. The clear liquid from sludge tank will flow back to contact oxidation tank for further treatment. After digestion, the excess sludge is little, usually the tank is cleaned up once every 1-2 years. Dung-absorption cart can be used to reach the bottom of sludge for cleaning, then sludge is exhausted out. (WSZ-A 0.5-5T/h: aerobic digestion is adopted for sludge treatment)
Air-Blower chamber and Blower: WSZ-A air-blower chamber is set at the top of sterilization tank, its inlet is designed two-layer sound insulation, and its ventilation inlet is equipped with silencer and blower filter, therefore, its operation is noise-proofing. Two sets of L-type Roots blower are used, that can be operated automatically and alternatively. One single blower can be served for about 30000 hours.

II. Technical Parameters of WSZ-A Equipment WSZ-A

Name

Type

A-0.5

A-1

A-3

A-5

A-10

A-20

A-30

Disposal Amount
(m3/h)

0.5

1

3

5

10

20

30

Blower

Type

L13LD

L13LD

L12LD

L12LD

L22LD

L23LD

L32LD

Power (kw)

0.75

0.75

1.5

1.5

2.2

4

7.5

Water Pump

Type

AS10-2CB

AS10-2CB

AS10-2CB

AS10-2CB

AS10-2CB

AS16-2CB

AS16-2CB

Power (kw)

1.0

1.0

1.0

1.0

1.0

1.6

1.6

Water Iflow

BOD5mg/l

200-400

Water Discharged

BOD5mg/l

20-60

Weight of Equipment (t)

2.5

4.5

6

9

9

12

15


III .Relations between Disposed Amount of WSZ-A Equipment and Water Charged in and Discharged:

Water Inflow BOD 5mg/L

200

300

400

200

300

400

500

300

400

500

Water DIscharged BOD 5mg/L

20

20

20

30

30

30

30

60

60

60

Water Disposed
Amount (m3/h)

A-0.5

0.5

0.4

0.33

0.5

0.4

0.38

0.3

0.5

0.43

0.38

A-1

1

0.8

0.65

1

0.9

0.75

0.6

1

0.85

0.75

A-3

3

2.4

1.95

3

2.7

2.55

1.8

3

2.55

2.55

A-5

5

4

3.25

5

4.5

3.75

3

5

4.25

3.75

A-10

10

8

6.5

10

9

7.5

6

40

8.5

7.5

A-20

20

16

13

20

18

15

12

20

17

15

A-30

30

24

19.5

30

27

22.5

18

30

25.5

22.5

Because of limited space, detailed information please connect with us to ask for!

 
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