China Oil Refining Sewage Deep Treatment Systems Mechanical Filter Continuous Flow Sand/Sand

China Oil Refining Sewage Deep Treatment Systems Mechanical Filter Continuous Flow Sand/Sand

Product Description

Product Description
Continuous Flow Sand Filter / Upflow Sand Filter / Mechanical Filter 
for Drinking Water, Industrial Water, Sewage Deep Treatment and Water Reuse.


Mechanical Filter is mainly used to remove suspended solids, sediment, iron, manganese and condensed flakes in raw water and adhesive colloidal particles which cannot be removed by sedimentation method. A pre-treatment system consisting of activated carbon filter and demineralizer to provide good production water for the food industry.

Continuous Flow Sand Filter is a kind of simple and efficient filtration technology which is convenient to manage. Relative to traditional silica sand filter,it is a quantum jump.It sets flocculation, clarification and collation in one.  There are no moving parts in the filter,which can guarantee the stability of the system normal operation.  It is widely used in the area of advanced treatment of drinking water, industrial water and sewage deep treatment,and also in the reuse of reclaimed water.  

Working Principle
The raw water is sent to the sand filter by the filter, uniformly dispersed into the sand layer by the water separator and passed through the sand layer in an upward flow manner. When the water flows through the sand layer, the formation of the filtration is completed, and the machine is excluded through the overflow weir.

*High efficiency, 24 hours continuous work, no need to stop backwash.  No backflush valve and back-up strainer required.
*Low operating cost, no need for high head and large flow backwash pump, reduce operating cost.  
*Low maintenance costs, active sand filter in the process of operation in addition to quartz sand filter material without any rotating parts, low failure rate, saving maintenance costs.  
*Low one-time investment, do not need to set up a single coagulation tank, clarification tank and other facilities, do not need to backwash pump and electric, pneumatic valves and other equipment, small amount of engineering, one-time investment savings.  
*Small head loss, due to the use of single-stage filter material and filter material clean in time, so the active sand filter head loss is very small, about 0.5m.  
*Loose inlet water quality requirements, can withstand long-term 150mg/L SS inlet water quality and effluent water quality unchanged.  
*Good filtration effect, stable effluent water quality.  Filter material clean timely, can ensure high quality, stable water effect, no periodic water quality fluctuation phenomenon.  
*Easy to modify and expand.  The unit operation mode adopted by continuous flow sand filter can increase or reduce the number of filters flexibly according to the change of water quantity, which is easy to modify and expand.  



Product Parameters

QDEVU Sand Filter Parameter

Model Φ(mm) H(mm) s(m2)
QDSL-03 638 2700 0.3
QDSL-07 958 3625 0.7
QDSL-15 1435 4450 1.5
QDSL-30 1913 5300 3.0
QDSL-50 2551 6350 5.0
QDSL-80 3200 6800 8.0


Packaging & Shipping




Company Profile

Our Company

Qingdao EVU Environmental and Engineering Equipment Co., Ltd. is established in 1999,it is one of scientific research design, equipment manufacture, installation, commissioning and training services as one integrated technology-oriented enterprises in water treatment industry. It is holding by Qingdao Spark Textile Machine Co., Ltd which is a national Spark Industrial Group, national second-level and large-scale comprehensive enterprise group in China.

Our Products

We use the advanced technology and equipment over the world. Our main productions: Integrated Sewage Treatment Equipment, MBR Sewage Treatment Equipment(MBR), Electrocoagulation Sewage Treatment Plant(EC Plant), Reverse Osmosis Filteration Equipment(RO System), Dissolved Air Flotation Machine(DAF), Cavitation air Flotation Machine(CAF), Aerator, Screw Press Sludge Dewatering Machine, Automatic Chemical Dissolved and Dosing machine, Sludge Scraper, Slag Scraper, The micro bubble generator, USAB anaerobic reactor, Bar Screen, Sand Filter and so on series products.

Our Customers

We have professional engineer support, high efficiency sales team and competitive price superiority, and attract customers from all over the world, we export to over 40 countries, including Europe, Poland, Serbia, Uruguay, Turkey, Russia, USA, Mexico, Brazil, Singapore, India, Egypt, Thailand, Middle east and South Africa. 

Our Certificate

We based on "technological development, pollution remediation, wholeheartedly for customer services". We hope to cooperate with all customers from all over the world and build a better world together.



Q1:Are you a factory or trading company?

We are a real manufacturer who can offer you both the most competitive price and top quality products.

Q2:Where is your factory located? How can I visit there?

Our factory is located in Qingdao City Shandong Province, All our clients, from home or abroad, are warmly welcome to visit us!

Q3:Can you put my company brand (logo) on the products?

Yes,we support OEM/ODM service,the customize process as follows:
1.Customers put forward personalized customization requirements.
2.Our engineer draw the design draft.
3.Customer confirm the design draft.
4.Factory start to produce shipment.

Q4:How to select right model?

You can tell us what you need, and we can help you choose the Model.Basic informations as follows:
Wastewater type : Industry wastewater, Domestic wastewater, food wastewater or others)
Capacity:m³/Day or m³/Hour?

Raw water quality: SS, Oil & Grease &Fat & FOG, PH,BOD,COD content?

Output water quality standard,for discharge or reuse?
Local voltage and frequency?

Q5: What is your MOQ?

Normally, our MOQ is 1 set.

Q6:What is the payment term ?

TT and L/C are acceptable and TT will be more appreciated, 30% deposit, 70% balance payment before shipment.

Q7: We haven’t imported before, can you ship the goods to our warehouse?

Yes. Although our normal trade term is EXW, FOB, CIF, we can also arrange logistics to your warehouse.

Q8:What is the delivery time of your factory?

5-10 days for general series products, meanwhile, batches products & customized products would need 15-30 days based on different situations.Contact us for the exact time.

Q9:How do you ensure the quality of your products?

Generally, our equipment are the most durable type in the industry, this is also the feature of the label impression for most of our customers at home or abroad.Skilled workers and strict quality control system can ensure every machine with best working performance.

Q10:How to assemble the equipment once we received it?

The CAD install instruction, assembly procedure and project case will be provided.,Of course our skilled installation engineers would go to your country and install the equipment if needed.

Q11: What is your product warranty ?After sales service?

The warranty is 12 months while the lifetime is 10-15 years under good maintenance.It is durable and anti-corrosion.
Provide equipment certification and installation operating instructions.
Provide one-year spare parts.
Provide technical advisory services.
Provide guidance staff for installation and commissioning.



Parameters Table

Model NO.



Filtration Aera

8~80 T/H

Processing Different Kinds of Water Quality


Filter Media
Activated Carbon/Quartz Sand/Manganese San

Control Mode
Automatic or Manual

Control Way
Differential Pressure/Time/Manual

Remove Ss Tp N

Sewage Deep Treatment

Operation Cost

Maintenance Cost

Head Loss

24 Hours Auto

Transport Package
Standard Package


QDEVU or Customized


HS Code

Production Capacity