A horizontal drum multi-stage packing filter

Abstract

The invention discloses a horizontal type roller multistage packing filter which comprises a horizontal type roller tank rotatably arranged on a bracket; the horizontal type roller tank is divided into N filter cabins which are sequentially communicated with one another; packing parts which are fully filled with particle packing are arranged at the lower part of the horizontal type roller tank, and the upper part of the horizontal type roller tank is hollow; packing part cabin plate channels and hollow part cabin plate channels are guaranteed to be alternately arranged and are respectively provided with isolation gauzes which are capable of isolating sand and is permeable; a backwashing pipe is arranged at the bottoms of the packing parts; the tops of the hollow parts are provided with a through cabin blow-off pipe; a backwashing water inlet pipe is communicated to the packing parts of all the filter cabins by spray guns; a backwashing blow-off pipe passes through one-way valves and all sewage inlets in the through cabin blow-off pipe and is then communicated with the hollow parts of all the filter cabins. After the horizontal type roller multistage packing filter is adopted, the static state of the packing in a traditionally designed oil extraction wastewater filtering device is changed into an intense movement backwashing state in the backwashing process, so that the backwashing of the oil extraction wastewater filtering device is fully carried out, the filtering quality of the packing is greatly improved, the backwashing time and frequency of the device are reduced, and the working time of the device is prolonged.

Description

technical field [0001] The equipment relates to the field of oil production sewage treatment equipment, in particular to a horizontal drum multi-stage packing filter, which is used for filtering and improving the water quality of oil production sewage for reinjection and sea (river) discharge. Background technique [0002] In the process of oil extraction, it is always necessary to use filtration equipment to filter and purify the oil production sewage associated with oil, and then inject it back into the oil reservoir to increase the pressure of the oil reservoir and maintain the production of the oil well in a high state, because the composition of the oil production sewage is very complex, with a lot of dirt, and high technical requirements for filtration equipment; the principle of oil production wastewater filtration equipment is mainly to block and absorb visible impurities and dirt in oil recovery wastewater with granular fillers, and at the same time, the effective ga...

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Problems solved by technology

[0002] In the process of oil extraction, it is always necessary to use filtration equipment to filter and purify the oil production sewage associated with oil, and then inject it back into the oil reservoir to increase the pressure of the oil reservoir and maintain the production of the oil well in a high state, because the composition of the oil production sewage is very complex, with a lot of dirt, and high technical requirements for filtration equipment; the principle of oil production wastewater filtration equipment is mainly to block and absorb visible impurities and dirt in oil recovery wastewater with granular fillers, and at the same time, the effective gaps of granular fillers are reduced or disappeared, and granular fillers form sludge. The cake no longer has the filtering function, so it is necessary to backwash the granular packing to separate and discharge the visible impurities and dirt in the gaps of the granular packing, so as to increase the porosity and restore the filtering function; when using traditional filtering equipment, it will encounter 2 There are two problems: on the one hand, during the normal filtration process of oil extraction wastewater, the calcium and magnesium ions in the highly salinity oil extraction wastewater will scale on the filler particles and eventually cause the filler to solidify and be scrapped; on the other hand, when the granular filler is being filtered During the backwashing process, since the granular packing is in a static state, the backwashing water cannot thoroughly wash away the visible impurities and dirt in the packing; after the backwashing process, the effective porosity of the granular packing is difficult to increase to the previous level, seriously affecting Therefore, there is an urgent need for a filter device that can thoroughly clean the impurities and dirt in the granular packing

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