The full-automatic backwash filter is quite mature in the filtration of industrial water, seawater, food, pharmaceutical and other light chemical industrial wastewater and circulating water, as well as in the filtration treatment of emulsion regeneration, waste oil, liquid raw materials, etc. the full-automatic backwash filter plays an important role in environmental protection and cost saving.
At present, the full-automatic backwash filter series produced by Jiangsu union Filter Equipment Co., Ltd. include standard backwash filter, dry residue backwash filter, tubular backwash filter, double barrel backwash filter, modular backwash filter, cluster backwash filter and gas backwash filter.
Actual picture of cluster backwash filter of Jiangsu Union
When installing the full-automatic backwash filter, first of all, we should pay attention to the selection of filter specifications, and make it match with the installation pipeline. When the filter flow cannot meet the pipeline requirements, two (or more) filters can be installed in parallel, or the side filter treatment can be done.
Actual picture of Jiangsu union tubular backwash filter
Secondly, when the automatic backwash filter is installed, the filter shall be installed at the place where the system needs to be protected as far as possible, and the low pressure at the inlet affects the use, so it shall also be installed near the pressure source, and the drain outlet shall be installed at the lower part as far as possible, and the drain pipe shall be connected to the drainage ditch nearby, generally no more than 5m, so as to facilitate the smooth discharge of sundries.
Moreover, the filter shall be installed in series in the pipeline system. In order to ensure uninterrupted water supply of the system during shutdown and maintenance, it is recommended to set a bypass in the system. The inlet and outlet of the filter and the bypass shall be equipped with ball valve for cut-off. Where there is a possibility of backflow, a check valve shall be installed at the outlet of the filter.
Picture of unite gas backwash filter
Then, when the automatic backwash filter is installed, three-phase 380V power frequency alternating current (three-phase four wire system) is required on site. Pay attention to filtering accuracy, pretreatment and pressure in DC system, and pay attention to timing control in intermittent system. In addition, when the automatic backwash filter is installed outdoors, we should pay attention to waterproof and rainproof.
Finally, it should be noted that the system stops running for a long time or seasonally. Before the system stops running, a proper amount of corrosion inhibitor should be added to the water, and measures of full water wet protection should be taken to reduce corrosion and protect the system.