walnut shell filter material is hardness, the ideal proportion , porosity and multi-faces and having been processed through special physical &chemical treatment (its pigment, fat, oils, electric ions been removed), it can exempt oil effectively in water treatment. With the advantages of removing solid particles, easy back-washing and so on .it is widely used in oily sewage treatment, industrial Wastewater treatment and civil water treatment. It is the new filter media which instead of the quartz sand filter, can improve water quality, greatly reduce the cost of water treatment . Now, series of walnut shell filters with various backwash methods and capacities have been developed for years. Specially treated walnut shells character large surface area, high adsorbability and removing efficiency. The filters are suitable for disposal of oily water in oilfield and other industries. Characteristics: 1 .with advantages of multifaces and microporous, strong loading sewage ability and high rates of removing oil and suspended solids . 2.With different diameter, forming deep bed filtration, enhancing removal capacity of oil and the speed of filtering. 3. Be hydrophilic and not lipophilic, with suitable proportion , easy back-washing, and strong regeneration ability. 4. With features of hardness, not being corroded easily and replaced, only add 10 percent each year, so as to reduce maintenance costs & time and improve utilization rate. Purpose: 1.Oily wastewater treatment in oilfield: exempting oil and suspended solids. 2. Industrial oily water treatment: removing oil and suspended solids. 3. Civilian water and industrial water treatment: removal of suspended solids and improve water quality. Description Parameter Capacity (each),m3/h 10425 Backwash strength,L/m2s 6.3 Design pressure, MPa 0.62.0 Design temperature, ºC 80 Filter velocity, m/h 2434 Backwash time, min. 2025 Filter resistance (single stage, in parallel), MPa max0.1 Filter resistance (each unit), MPa max0.12 Primary filtration (mg/L) Inlet SSmax100 Oil content max100 Outlet SSmax100 Oil content max10 Working cycle, h 825 Filter resistance (2 stages, in series), MPa 13% Inlet water, mg/L SS max50 Oil max50 Outlet water, mg/L SS max10 Oil max10

Issue Time:		2008-09-01
Expire Time:		2009-09-01