The Multi-Disk Screw Presssaving The Investment

Clog Free Sludge Dewatering Press (MDS 313)

Clog Free Sludge Dewatering Press, BENENV's MDS dewatering press is a unique dewatering machine. It offers below advantages over traditional sludge dewatering press:

1. Power Saving, the power of biggest model of MDS sludge dewatering press is just 6kw

2. Low Cost and running cost, due to low rpm, the wearing is very small so the spares have long service life

3. Low labor work, unattended operation and a general worker can operate machine well

4. Low noise, only 2-3 RPM

5. Clog-free, MDS sludge dewatering press is of fixed ring and moving ring combination screw press. The moving rings clean the filter gap during dewatering operation

6. Small footprint,

In a word, if you are tired of centrifuge's annoying noise and huge power consumption, or if you are tired of belt press and filter press clog issue and large footprint, you should come to us. Our MDS sludge dewatering press can help to solve your problems.

Japanese Technology, Japanese Quality Control, Competitive Price

BENENV is a company with over 40 years of experience in the sludge treatment on design, engineering, manufacturing and installation. We focus on the dewatering treatment (first & second dewatering, biological aerobic drying) and resource utilization of sludge from wastewater of all industries. Our products line includes Multi-disk screw press series (MDS), KDS thickening and dewatering series, electric osmosis equipment, sludge drying machine and sludge incinerator.

Benenv are always focusing on independent technology innovation of themselves. We have our own Japanese branch company "Japan Benenv Co., Ltd.", which is technology research and design center and also help headquarters to do the Japanese Quality Control. Benenv have already got international qualifications as ISO9001: 2008 and CE marks for all products, national awards as Utility Model Patent for MDS series and KDS, sludge drier, etc, and High-tech Enterprises Qualification, etc. products are mostly exported to the European and North American countries. BENENV are also working closely with top 10 universities and government organizations in China and Japan such as Tokyo Industry University and Nanjing Agriculture University to keep our technology of cutting-edge and transform science and technology into productivity.

 

Structure of Sludge Dewatering Press

MDS is a new generation of sludge dewatering technology -BENENV® multi-disk screw press, a screw type sludge dehydrator that is much more advanced in very aspects than belt presses, Centrifuges, plate-and-frame filter presses, etc. It features clogging-free, wide range of applications, low energy consumption, simple operation & maintenance.

Process of Sludge Dewatering Press

MDS has solved several technical problems of other similar sludge dewatering equipment including belt presses, centrifuge machines, plate-and-frame filter press have, which are frequent clogging, low concentration sludge / oil sludge treatment failure, high energy consumption and complicated operation etc.

Sludge Overflow: Sludge is pumped into the dehydrator inlet tank, and from there, it flows over a triangular overflow discharge into the flocculation tank. Sludge quantities exceeding the equipment capacity, are returned through the safety overflow.
Flocculation: The flocculation tank is stirred with a low-speed paddle mixer, and the polymeric flocculent is dosed into the incoming sludge. The flocculent solution is prepared directly at the wastewater treatment plant, by mixing the concentrated reagent with water, in an independent tank. It is then dosed in sufficient quantities by a dosing pump. The reaction of the flocculent with the sludge, causes clearly defined flakes to be formed in the dehydrator flocculation tank and subsequently brought into the thickening and dewatering drum.

Thickening: When the shaft is driven by the screw, moving rings around the shaft move up and down relatively. Most water is pressed out from the thickening zone and fall down to the filtrate tank by gravity.

Dewatering: The thickened sludge moves forward continuously from the thickening zone towards the dewatering zone. With the pitch of the screw shaft thread getting narrower and narrower, the pressure in the filter chamber increases higher and higher. In addition to the pressure generated by the back-pressure plate, the sludge is greatly pressed and dryer sludge cakes produced.

Applications of Sludge Dewatering Press

Special pre-concentrating device, no need thickening equipment, widely feed low solids concentration , can be Widely Used in different applications:

Exclusive pre-concentration design, applicable sludge concentration of 2000mg/L-50000mg/L; Due to the innovation of the structure design, it is highly suitable to various high and low concentration sludge, most especially for the oily ones.

l  Municipal water and wastewater treatment plants

l  Agricultural/fishery community wastewater treatment plants

l  Industrial waste treatment plants

l  Food/beverage production plants

l  Dairy farming/Meat processing plants

l  Chemicals manufacturing plants

l  Machinery manufacturing/Metal processing plants

l  Laundry wastewater

l  Other (paper manufacturing, building material manufacturing, oilfield associated water accompanied with crude oil mining, etc.)

Advantages of Sludge Dewatering Press

Since MDS dewatering press can be used directly to concentrate and dewater the low-solid sludge from aeration tanks or secondary clarifiers, the users don't have to build a thickening tank or a storage tank any more while they have to when using other types of sludge dehydrators, especially the belt filter presses. Then significant civil engineering cost and floor area are saved.

Furthermore, the phosphorus emission problem caused by aeration tanks or secondary clarifiers can be well prevented.

Fixed/moving rings replace filter cloths, self-cleaning, clog-free

As MDS using fixed rings and moving rings as filter media instead of filter cloths makes it especially good at treating oily sludge when compared with other types similar sludge dehydrator. The moving rings rotate up and down to the fixed rings when the gaps between them are cleaned to prevent from clogging.

Low-speed rotating, low noise, low energy consumption - only 1/10 of belt filter presses and 1/20 of centrifuges

MDS doesn't need any big supporting equipment such as rollers to work with. The rotating speed is as low as only 2-4 r/min. As a result, it can realize water-saving, energy saving and low noise. The average energy consumption is only 0.01-0.1kwh/kg-DS, only 1/10 as that of belt filter presses and 1/20 as that of centrifuges .

Full-automatic control, simple operation and management

There are no easily blocked pieces such as belt and filtration pore in Multi-Disk Screw Press. Combining with the auto control system, the machine runs very safely and simply and can be programmed according to the requirement of the users. It can operate automatically for 24 hours, unmanned.
Models

Patents

BENENV constantly focus on innovation & improvements of our products to meet the requirements of the market and provide our customers with products of reliability and high performance. So far, we've got dozens of patents and varieties of pending technologies on sludge treatment equipment.

Our Clients

By 2015.06, 518 units of MDS are installed in 37 countries!