Industry Pressure Sand Filter With Backwash System
Depending on the type of water, suspended solids concentration, oil and grease, COD/ BOD, iron contents, sand filters are sized differently, but the basic design data to clarify natural waters are the following:
| Filtration velocity | 6-15 m3/h.m2 |
| Diameter | 50 cm to 1m | 1 to 3m |
| Filtration area | 0,2 to 0,8 m2 | 0,8 to 7 m2 |
| Flowrates | 10L/h to 10 m3/h | 10 to 100 m3/h |
| Pressure ratings | 4 to10 bar |
| Vessel Materials | Epoxy-coated steel |
| Polyester composite |
| Stainless steel (on request) |
| Bed depth | 1 meter min. |
| Filtration media | Anthracite 1.4-1.5 mm |
| Sand 0.4-0.8 mm |
| Sand 1.0-2.0 mm |
| Gravel 2.0-3.15 mm |
| Gravel 3.15-5.6 mm |
| Top manhole | 2 1/2 to 6" | DN 400 |
| Accessories | 5-ball or butterfly valves | 5-butterfly valves |
| Options | Manometers, degaser, flowmeter |
| Control | Automatic or manual backwash, on timer and/or differential pressure |
Advantages:
Pressure Sand Filter/sand filter tank in water treatment
A) High filtration efficiency.
B) Low resistance, high capacity, high sewage interception capability, long service life.
C) High cleanness of filter and no pollution of filtering media.
D) Anti acid-base.
E) High strength, high temperature resistant, no deformation.
F) Low purchasing cost and operation cost, easy to clean and replace filter cartridge.
G) Easy operating & maintenance
Working principle:
For the Pressure Sand Filter, the filter is installed in the main circulating pipeline to filter all the circulating water,
but apart of the circulating water led from the main circulating pipeline is filtered, which is a repeated
circulatininterception step by step to filter the impurities within the system and finally remove the impurities
by thenecessary backwash out of the system. Installing a by-pass filter in the circulating water system can
prevent the terminal pipe of device from sludge blocking and remove the impurities in the system with
chemical dosing.
Pressure Sand Filteris used to reduce the turbidity of the water circulation system, exactly, to reduce slime
and
prevent its deposition in the heat exchanger, so that the effect of agent will be better.
Generally speaking, if your filter is a Pressure Sand Filter, it usually has two main functions:
1. To reduce suspended solids (turbidity). Otherwise, as the system is running, suspended solids increases
, which will exacerbate the deposition and other problems.
2. Degreasing. Especially the oily turbid circulation, such as steel rolling and continuous casting, has high
oil content and is easy for breeding microorganism and blocking the nozzles.
Parameters
Pressure rating: 0.25Mpa~2.5Mpa
Single filter flow :2-50 m3/hour
Working temperature range: 0 ~ 65 °C
Effluent turbidity:less-than 3
Inlet and outlet Connection: flange
Backwash water: for total filtered water 1 to 3%
Control mode: pressure control; PLC timing control
Sewage way: automatic
Rated operation voltage: can be customized
Model |
Flow Rate
(m3/H) |
Inlet and outlet
(mm) |
Filter area
(m2) |
Diameter
(mm) |
Height
(mm) |
YLD-SF-800 |
15-25 |
50 |
0.5 |
800 |
960 |
YLD-SF-1000 |
23-39 |
50 |
0.79 |
1000 |
1200 |
YLD-SF-1200 |
33-55 |
80 |
1.13 |
1200 |
1400 |
YLD-SF-1400 |
45-75 |
100 |
1.54 |
1400 |
1600 |
YLD-SF-1600 |
60-100 |
100 |
2.01 |
1600 |
1800 |
YLD-SF-1800 |
75-125 |
150 |
2.54 |
1800 |
1950 |
YLD-SF-2000 |
95-155 |
150 |
3.14 |
2000 |
2150 |
YLD-SF-2200 |
115-190 |
150 |
3.80 |
2200 |
2250 |
YLD-SF-2400 |
130-210 |
150 |
4.52 |
2400 |
2300 |
YLD-SF-2600 |
145-225 |
150 |
5.3 |
2600 |
2400 |
YLD-SF-2800 |
155-240 |
200 |
6.15 |
2800 |
2500 |
YLD-SF-3000 |
170-255 |
200 |
7.00 |
3000 |
2600 |
Application:
Water treating, Raw water treating , Recycle water , Chilling water treat, Soft water treat
Agricultural irrigation ,such as Farms Water , Golf Water Filtration , Orchards and Groves Water Filtration , Vineyard Water Filtration etc .
Papermaking factory
Steel and lron plant
Petroleum Chemistry
Audited Supplier 
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