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Product features and performance indicators
High filtration rate, generally 2 times the filtration speed of quartz sand filter tank; The backwashing effect is good, because the internal mechanical stirring and scrubbing structure is provided, which can not achieve the effect of water rinsing alone; The amount of backwashing water is small, and the backwash water volume is only 1/2~1/3 of the backwash water volume of the quartz sand filter tank; the backwash water before filtration can be used, and there is no need to set up a backwash tank; Strong adsorption capacity and high filtration accuracy; Small footprint. Influent water quality oil 20-50mg/L; suspended solids 20-50mg/L; effluent water quality oil 5-20mg/L; suspended solids 3-20mg/L.
Equipment principle
Walnut shell filters are mainly used to separate finely dispersed emulsified oils that cannot naturally float through the degreasing tank. After special treatment of wild walnut shell filter material has porous and large surface area, the filter material will be suspended solids and oil beads in the sewage intercepted on the surface of the filter material layer or adsorbed on the surface of the filter material, after a period of operation, that is, when the water quality of the filter material saturated effluent deteriorates, stop the water inlet for backwashing, so that the filter material returns to its original characteristics, and the backwash water will take away the retained matter, and finally achieve the effect of filtering oil and suspended solids.
Operation effect and application field
The installed walnut shell filter has met the requirements of use, with a high degree of trouble-free automation, high efficiency in oil removal and suspended solids.
Used for oily wastewater treatment in the oil extraction industry. Used in oily wastewater treatment in petroleum refining industry.
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