MicroWeb MWR Wastewater Treatment Packaged Equipment
User Manual

1. Introduction

MicroWeb MWR is a series of wastewater treatment equipment, which are designed to remove pollutants from wastewater fast and efficiently combining with the proprietary MicroWeb technology of our company.

MicroWeb technology uses encapsulation/flocculation and poly-complexed bridging mechanism to encapsulate, flocculate, adsorb and stick the particles in the wastewater. Thus, the process is advanced, effective and highly productive.

MicroWeb MWR can be widely used in wastewater treatment, especially in industry wastewater. After the treatment, COD removal rate can be over 90%, and all of COD, BOD, SS, and pH can reach the discharging standards.

MicroWeb MWR is of the features: high efficiency, easy operation and management, less investment, less space occupation, low operating and maintenance costs.

2. MicroWeb MWR model types

MicroWeb MWR model types are shown as below:

MWR-01-OSM

That is: MWR-Number- (letter1)(letter2)(letter3)

Where:
Number --- The capacity of MWR; in this example it is 1ton/hour.
Letter1--- O stands for oil removal; N stands for no oil removal.
Letter2--- F stands for adsorption filter; S stands for HESS settling tank; D stands for DAF system; P stands for press filter.
Letter3 --- A stands for automatic pH system; M stands for manual pH system.

MWR model types are listed in table 1. Please contact us if you have any other requirements of model types.

Table1. MWR Model Types
Model type Equipment Capacity Use range Estimated size (m)

MWR-01-OFA

1.Oil removal
2.MicroWeb reactor
3.Adsorption filter
4.Chemical addition system
5.Automatic pH system
10.2t/h Suitable for W.W. with high oil content, water qualities vary large, and SS/COD less than 0.4. 3.0(L)x3.0(W)x2.0(H)
MWR-05-OFA 51t/h 4.0(L)x4.0(W)x2.7(H)
MWR-15-OFA 153t/h 4.0(L)x4.0(W)x2.7(H)
MWR-25-OFA 255t/h 6.0(L)x4.0(W)x2.7(H)
MWR-50-OFA 5010t/h 6.0(L)x6.0(W)x2.7(H)
MWR-01-NFM 1.MicroWeb reactor
2.Adsorption filter
3.Chemical addition system
10.2t/h Suitable for W.W. with low oil content, water qualities vary slightly, and SS/COD less than 0.4. 3.0(L)x1.8(W)x2.0(H)
MWR-05-NFM 51t/h 4.0(L)x1.8(w)x2.7(H)
MWR-15-NFM 153t/h 4.0(L)x1.8(w)x2.7(H)
MWR-25-NFM 255t/h 4.0(L)x4.0(w)x2.7(H)
MWR-50-NFM 5010t/h 6.0(L)x4.0(w)x2.7(H)
MWR-01-NFA 1.MicroWeb reactor
2.Adsorption filter
3.Chemical addition system
4.Automatic pH system
10.2t/h Suitable for W.W. with low oil content, water qualities vary large, and SS/COD less than 0.4. 3.0(L)x1.8(W)x2.0(H)
MWR-05-NFA 51t/h 4.0(L)x1.8(W)x2.7(H)
MWR-15-NFA 153t/h 4.0(L)x1.8(W)x2.7(H)
MWR-25-NFA 255t/h 4.0(L)x4.0(W)x2.7(H)
MWR-50-NFA 5010t/h 6.0(L)x4.0(W)x2.7(H)
MWR-01-OFM 1.Oil removal2.MicroWeb reactor3.Adsorption filter4.Chemical addition system 10.2t/h Suitable for W.W. with high oil content, water qualities vary slightly, and SS/COD less than 0.4. 3.0(L)x3.0(w)x2.0(H)
MWR-05-OFM 51t/h 4.0(L)x4.0(w)x2.7(H)
MWR-15-OFM 153t/h 4.0(L)x4.0(w)x2.7(H)
MWR-25-OFM 255t/h 6.0(L)x4.0(w)x2.7(H)
MWR-50-OFM 5010t/h 6.0(L)x6.0(w)x2.7(H)
MWR-01-OSA 1.Oil removal
2.MicroWeb reactor
3.HESS system
4.Chemical addition system
5.Automatic pH system
10.2t/h Suitable for W.W. with high oil content, water qualities vary large, and SS/COD more than 0.4. 1.8(L)x1.5(W)x2.0(H)
MWR-05-OSA 51t/h 3.0(L)x2.5(W)x2.8(H)
MWR-15-OSA 153t/h 6.0(L)x4.0(W)x2.0(H)
MWR-25-OSA 255t/h 8.0(L)x6.0(W)x2.2(H)
MWR-50-OSA 5010t/h 15(L)x10(W)x2.5(H)
MWR-01-OSM 1.Oil removal
2.MicroWeb reactor
3.HESS system
4.Chemical addition system
10.2t/h Suitable for W.W. with high oil content, water qualities vary slightly, and SS/COD more than 0.4. 1.8(L)x1.5(W)x2.0(H)
MWR-05-OSM 51t/h 3.0(L)x2.5(W)x2.8(H)
MWR-15-OSM 153t/h 6.0(L)x4.0(W)x2.0(H)
MWR-25-OSM 255t/h 8.0(L)x6.0(W)x2.2(H)
MWR-50-OSM 5010t/h 15(L)x10(W)x2.5(H)
MWR-01-NSA 1.MicroWeb reactor
2.HESS system
3.Chemical addition system
4.Automatic pH system
10.2t/h Suitable for W.W. with low oil content, water qualities vary large, and SS/COD more than 0.4. 1.8(L)x1.5(W)x2.0(H)
MWR-05-NSA 51t/h 3.0(L)x2.5(W)x2.8(H)
MWR-15-NSA 153t/h 6.0(L)x4.0(W)x2.0(H)
MWR-25-NSA 255t/h 8.0(L)x6.0(W)x2.2(H)
MWR-50-NSA 5010t/h 15(L)x10(W)x2.5(H)
MWR-01-NSM 1.MicroWeb reactor
2.HESS system
3.Chemical addition system
10.2t/h Suitable for W.W. with low oil content, water qualities vary large, and SS/COD more than 0.4. 1.8(L)x1.5(W)x2.0(H)
MWR-05-NSM 51t/h 4.0(L)x3.0(W)x2.8(H)
MWR-15-NSM 153t/h 7.0(L)x6.0(W)x2.8(H)
MWR-25-NSM 255t/h 12(L)x10(W)x2.8(H)
MWR-50-NSM 5010t/h 25(L)x20(W)x3.0(H)
MWR-01-ODA 1.Oil removal
2.MicroWeb reactor
3.DAF system
4.Chemical addition system
5.Automatic pH system
10.2t/h Suitable for W.W. with high oil content, water qualities vary large, and light specific gravity sludge. 3.5(L)x3.0(W)x2.1(H)
MWR-05-ODA 51t/h 4.5(L)x4.5(W)x2.5(H)
MWR-15-ODA 153t/h 6.0(L)x6.0(W)x2.8(H)
MWR-25-ODA 255t/h 9.0(L)x6.0(W)x2.8(H)
MWR-50-ODA 5010t/h 12(L)x6(W)x2.8(H)
MWR-01-NDA 1.MicroWeb reactor
2.DAF system
3.Chemical addition system
4.Automatic pH system
10.2t/h Suitable for W.W. with low oil content, water qualities vary slightly, and light specific gravity sludge. 3.5(L)x1.5(W)x2.1(H)
MWR-05-NDA 51t/h 4.5(L)x2.5(W)x2.5(H)
MWR-15-NDA 153t/h 6.0(L)x3.0(W)x2.8(H)
MWR-25-NDA 255t/h 6.0(L)x6.0(W)x2.8(H)
MWR-50-NDA 5010t/h 10(L)x6.0(W)x2.8(H)
MWR-01-ODM 1.Oil removal
2.MicroWeb reactor
3.DAF system
4.Chemical addition system
10.2t/h Suitable for W.W. with high oil content, water qualities vary slightly, and light specific gravity sludge. 3.5(L)x3.0(W)x2.1(H)
MWR-05-ODM 51t/h 4.5(L)x4.5(W)x2.5(H)
MWR-15-ODM 153t/h 6.0(L)x6.0(W)x2.8(H)
MWR-25-ODM 255t/h 9.0(L)x6.0(W)x2.8(H)
MWR-50-ODM 5010t/h 12(L)x6(W)x2.8(H)
MWR-01-NDM 1.MicroWeb reactor
2.DAF system
3.Chemical addition system
10.2t/h Suitable for W.W. with low oil content, water qualities vary slightly, and light specific gravity sludge. 3.5(L)x1.5(W)x2.1(H)
MWR-05-NDM 51t/h 4.5(L)x2.5(W)x2.5(H)
MWR-15-NDM 153t/h 6.0(L)x3.0(W)x2.8(H)
MWR-25-NDM 255t/h 6.0(L)x6.0(W)x2.8(H)
MWR-50-NDM 5010t/h 10(L)x6.0(W)x2.8(H)
MWR-01-OPA 1.Oil removal
2.MicroWeb reactor
3.Press filter
4.Chemical addition system
5.Automatic pH system
10.2t/h Suitable for W.W. with high oil content, water qualities vary large and high solid content. 3.5(L)x1.5(W)x1.5(H)
MWR-02-OPA 20.4t/h 3.5(L)x1.5(W)x1.5(H)
MWR-01-NPA 1.MicroWeb reactor
2.Press filter
3.Chemical addition system
4.Automatic pH system
10.2t/h Suitable for W.W. with low oil content, water qualities vary large and high solid content. 1.5(L)x1.5(W)x1.5(H)
MWR-02-NPA 20.4t/h 2.0(L)x1.5(W)x1.5(H)
MWR-01-OPM 1.Oil removal
2.MicroWeb reactor
3.Press filter
4.Chemical addition system.
10.2t/h Suitable for W.W. with high oil content, water qualities vary large and high solid content. 3.5(L)x1.5(W)x1.5(H)
MWR-02-OPM 20.4t/h 3.5(L)x1.5(W)x1.5(H)
MWR-01-NPM 1.MicroWeb reactor
2.Press filter
3.Chemical addition system
10.2t/h Suitable for W.W. with low oil content, water qualities vary large and high solid content. 1.5(L)x1.5(W)x1.5(H)
MWR-02-NPM 20.4t/h 2.0(L)x1.5(W)x1.5(H)

3.The principle of MicroWeb MWR and the description of equipment

As showed in the flowchart, MWR consists of three or four parts:
(1) Oil removal (used for high oil content wastewater) (2) MicroWeb reactor (3) Chemical adding system (4) Adsorption filter, or HESS settling tank, or Dissolved-air flotation system, or Press Filter.

3-1. Oil removal

For the high oil content wastewater, the oil removal is necessary. The sketch of oil removal is shown as figure 2.

The wastewater is inputted in oil removal with the distributor 1. When accumulated to the designed height, the oil is discharged by lower the plate 3. The treated water flow out from port B. Plate 4 is used to block oil, plate 5 is used to keep the stable of water level. Over flow water is returned back to collecting tank through port A.

3-2. MicroWeb reactor

The sketch is shown as below.

The wastewater and chemicals are mixed completely to finish MicroWeb procedure while they go through the channels. Port A is the input of wastewater. The chemicals PAC, Ca(OH)2 and PolyWeb P30 are added from port B, C, D separately. Port E is the output of treated water, and port F is the over flow output.

3-3. Adsorption filter

The sketch is as figure 4.

Adsorption filter is chosen for the wastewater with the ratio of SS/COD less than 0.4. After MicroWeb reaction, the mixture of water and sludge go into the adsorption filter from bottom port A. The sludge are adsorbed and filtered by the fillers, then the clean water go out through the top port B. When the gap of the pressures that between the input and output is equals or bigger than 1.2kg/cm2, the system needs to be back washed. The clean water rinse from the top B and the sludge flow out from port A to the filter bag.

3-4. HESS settling tank

The sketch is as figure 5.

When the ratio of SS/COD is more than 0.4, HESS settling tank is a good choice for sludge separation. The mixture of water and sludge are separated in the tank with staying for about 30 minutes. The clean water is discharged through pipe b after filtered with a 400-mush-filter. The sludge flow into the filter bag through port c.

3-5. DAF system

The sketch is as figure 6.

DAF system is effective to treat the sludge separation that of light specific gravity. The mixture of water and sludge are pumped into the mixer, and then rush in the high efficiency jet device, where the ejected fluid meet with the fine air bobs that come from the compressor and form a 3-D spin fluid. When distributed in the separator, the sludge go up to the surface and are scraped into the scum channel, and then are discharged to the sludge tank, while the clean water is guided to the output with the link pipes.

3-6. Press filter

The sketch is shown as figure 7.

Press filter is powerful to the sludge-separation when the ratio of SS/COD is big, therefore, there is large quantity sludge formed in the treatment. The mixture of water and sludge falls onto the filter media where it dewaters by gravity. The sludge laden filter media then passes under a roller that squeezes out any excess water. The sludge then falls into a disposal container. The clean water settles in the settling tank and then it is discharged.

4. Preparation of chemicals

Chemical preparation and dosage control

(1) PAC
PAC can be used directly when it is solution. If PAC is in solid state, it needs to be diluted to solution of 30% concentration.

(2) Ca (OH)2
Ca (OH)2 solution is used in the concentration of 10%. To add Ca (OH)2 is to adjust the pH of the wastewater reacted with PAC, and keep pH at the range of 7.0~7.5.

(3) P30
In preparing P30 standard solution, disperse P30 solid power in 2000 times its own weight of water. The P30 powder should be introduced gradually into clean water (15~45oC) and dispersed for approx 0.5~1 hr. at a speed of between 20~80 RPM until a uniform dispersion is obtained. Normally the solution can be stored for 3 days. Two tanks for diluting are recommended, so they can be alternatively operated.
The dosage of P30 should be 1.2~1.5ppm; that is, adding 2.4L~3L P30 solution (0.05%) into one ton wastewater.

5. MicroWeb MWR operations

1. MWR-XX-OSM

The sketch is shown as figure 8

(1) Oil removal process

Adjusting the height of plate 3, make it higher than the over flow plate 5 about 10 mm. Turn off the output valve and start pump P101. When there is water flow over the over flow plate 5, turn on the output valve, and ensure there is water flow over at all time. When the thickness of oil is about 30mm, lower the adjustable plate 3 to let the oil out.

(2) MicroWeb reactor process

While the wastewater flow into the reactor, start the pumps P102, P103, and P104 to make the chemicals mix and react with the wastewater. To keep a stable capacity, the first channel should keep having over flow at any time.

(3) Settling and filter process

When the mixture of sludge and water which comes from reactor goes into the HESS settling tank, the sludge settle down to the bottom and the clean water separated to the upper layer. The sludge is discharged from bottom output valve. Filtered with a 400-mush-filter, the clean water flow out through output b.

2. MWR-XX-OSA

Except with the automatic pH system, all the other processes are the same as MWR-XX-OSM. That is, the system installed a probe to detect pH in the channel where P30 is added. Whenever the figure of pH is out off the range, the system will adjust the quantity of Ca (OH)2 automatically to keep the pH at the range 6-9.

3. MWR-XX-NSA

Except without oil removal, all the other processes are the same as MWR-XX-OSA.

4. MWR-XX-NSM

Except without oil removal, all the other processes are the same as MWR-XX-OSM.

5. MWR-XX-NFM

The sketch is shown as figure 9.

(1) MicroWeb reactor process

While the wastewater flow into the reactor, start the pump P102, P103, and P104 to make the chemicals mix and react with the wastewater. To keep a stable capacity, the first channel should keep having over flow at any time.

(2) Adsorption filter process

The pump P105 will start automatically when the detector LX-102 signals that the water level in the last channel of MicroWeb reactor is higher than designed height. After pumped into the adsorption filter, the sludge are filtered and adsorbed by the fillers. Clean water is out off the top.
When the gap of the pressures between the input and output is equals or bigger than 1.2kg/cm2, the system needs to be back washed. Close the valves of P102, P103, P104, and P105. The clean water is rinsed from the top, and the sludge flow out from the bottom pipe to the filter bag.

6. MWR-XX-NFA

Except with the automatic pH system, all the other processes are the same as MWR-XX-NFM. That is, the system installed a probe to detect pH in the channel where P30 is added. Whenever the figure of pH is out off the range, the system will adjust the quantity of Ca (OH)2 automatically to keep the pH within the range of 6-9.

7. MWR-XX-OFM

Except with oil removal, all the other processes are the same as MWR-XX-NFM.

8. MWR-XX-OFA

Except with oil removal, all the other processes are the same as MWR-XX-NFA.

9. MWR-XX-NDA

The sketch is shown as figure 10.

(1) MicroWeb reactor process

While the wastewater flow into the reactor, start the pump P102, P103, and P104 to make the chemicals mix and react with the wastewater. To keep a stable capacity, the first channel should keep having over flow at any time.

(2) Sludge separation process

DAF system consists of three parts, mixer, jet, and separator. When the detector LX-102 sends signal out, the pump P105 will start automatically to pump the mixture of sludge and water into the DAF system.

(3) The automatic system of pH

The system installed a probe to detect pH in the channel where P30 is added. Whenever the figure of pH is out off the range, the system will adjust the quantity of Ca (OH)2 to make the pH keep at the 6-9.

10. MWR-XX-NDM

Except without automatic pH system, all the other processes are the same as MWR-XX-NDA.

11. MWR-XX-ODA

Except with oil removal, all the other processes are the same as MWR-XX-NDA.

12. MWR-XX-ODM

Except with oil removal, all the other processes are the same as MWR-XX-NDM.

13. MWR-XX-NPM

The sketch is shown as figure 11.

(1) MicroWeb reactor process

While the wastewater flow into the reactor, start the pump P102, P103, and P104 to make the chemicals mix and reaction with the wastewater. To keep a stable capacity, the first channel should keep having over flow at any time.

(2) Sludge separation process

The mixture of water and sludge falls onto the filter media where it dewaters by gravity. The sludge laden filter media then passes under a roller that squeezes out any excess water. The sludge then falls into a disposal container. The clean water settles in the settling tank and then it is discharged.

14. MWR-XX-NPA

Except with the automatic pH system, all the other processes are the same as MWR-XX-NFM. That is, the system installed a probe to detect pH in the channel where P30 is added. Whenever the figure of pH is out off the range, the system will adjust the quantity of Ca (OH)2 to keep pH at 6~9.

15. MWR-XX-OPM

Except with oil removal, all the other processes are the same as MWR-XX-NPM.

16. MWR-XX-OPA

Except with oil removal, all the other processes are the same as MWR-XX-NPA.

6. MicroWeb MWR maintenance

6-1. Oil removal
Check and clean the distributor periodically to keep it work well.

6-2. MicroWeb reactor
The main joints and valves of the MicroWeb EPB should be checked and cleaned periodically to prevent block up. When not in operation, these parts need to be cleaned up and get ready for the reuse.

6-3. Adsorption filter
When the gap of the pressures that between the input and output is equals or bigger than 1.2kg/cm2, the system needs to be back washed. . When not in operation, take off the fillers from hand hole and clean them up in case the sludge concrete on the fillers.

6-4. HESS settling tank
The 400-mush-filter needs to be cleaned or changed regularly.

6-5. DAF system
a. Mixer
When not in operation, it needs to be cleaned thoroughly.

b. Jet
Clean up the jet device thoroughly before stop operation to ensure the sludge would not block the distributing plate.

c. Separator
Check the moving parts of the scum skimmer periodically.

6-6. Press filter
After used for a period of time the filter media could be blocked, backwash it use the designed system. Replace the filter media at the condition that the media can not use again.

Close Print

Updated October 18, 2002