Emery Filter

Emery FilterOverview:Emery filter material can be obtained by breaking, screening, selecting and processing corundum. The emery filter material is a new filter material for wastewater treatment with such properties as good appearance glossiness, high mechanical strength, high melting point, high proportion, acid resistance, wear resistance, and strong interception capability, as well as stable chemical properties which enable it to be insoluble in acid, neutral and alkaline water.Operating principle:Under normal working condition, wastewater enters the filtering tank from inlet of the device, and evenly passes filter material layer after water distribution in distribution device at the top.Through migration and adhesive attraction of particles suspended on wastewater by the filter material, particles on the wastewater is retained in the filter material. Filtered water will all discharge from the outlet through distribution device at the bottom. In this way, suspended solids and oil on the wastewater will be removed.As filtration goes on, plentiful suspended solids will block pore spaces on each filtering layer which will affect filtering rate and quality. Therefore, backwash must be performed to rinse the filter material so as to adopt normal filtering process.When washing the filter material, air wash shall be performed before water wash. Air back-washing is to scrub the sewage adhering to the surface of the filter material by making use of vibration of ascending air bubbles to have the sewage suspend in water. Then high strength back-washing water will be used for evenly rinsing each filtering layer after even water distribution in distribution device with high resistance at the bottom. In this way, sewage will be eliminated and the filter material will be recycled completely.Scope of application:For bypass filtering in circulating cooling process in such industries and enterprises as petrochemical industry, power, metallurgy, textile and so on;For filtering in tap water plants in urban area, villages and towns; For pretreatment of soften and desalting treatment plant;For purification treatment of swimming pools, fountains and other waterscape;echnical parameters and specifications:PerformancesSpecific IndexPerformancesSpecific IndexTreatment capability for unit set5-70m3/hFilter cycle12-24hDesign pressure0.6MPaBack-washing strength14-181/sm2Design temperature80℃Max pressure reduction0.05MPaFiltering rate8-10m/hBack-washing period10-15minInfluent water turbidity<20NTU  Turbidity<3NTU  ModelTreatment Capacity (m3/h)a Inlet water for filtering Backwashed outlet waterb Inlet water for filtering Back-washed outlet waterc DewateringDNHH1H2H3L1L2B1Bn-φdOperating Weight (t)ZJJGL8005DN50DN50DN328004000286295032004004001601708-φ203.5ZJJGL10008DN80DN80DN3210004000286295032004004001801808-φ207ZJJGL120010DN100DN100DN3212004000286295032004004001801808-φ208ZJJGL160020DN125DN125DN3216004000286295032004004002352358-φ2412ZJJGL180025DN15DN15DN4018004000286295032304504002952958-φ2422ZJJGL200030DN200DN200DN4020004223286295032305005002952958-φ2427ZJJGL220040DN200DN200DN4022004500286335036305005002952958-φ2430ZJJGL240045DN200DN200DN4024004500286335036305005003503508-φ2434ZJJGL260055DN250DN250DN4026004640425345037306005003503508-φ2438ZJSYL280060DN250DN250DN4028004750425345037306005004054058-φ2443ZJJGL300070DN250DN250DN4030004860425315234306005004054058-φ2452