A catalytic air flotation separation device for efficient demulsification and depolymerization
A technology of separation device and air flotation separation zone, applied in liquid separation, separation method, grease/oily substance/floating matter removal device, etc. The effect of saving energy consumption, less body disturbance and less sludge volume
Inactive Publication Date: 2016-03-23
杭州广联新能源科技有限公司
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Problems solved by technology
The polymer content in the polymer-containing sewage is very high, and its molecular weight is above one million, and a stable electric double layer and hydration layer are formed around it, which is very stable. Conventional water treatment uses a large amount of flocculant / coagulation It is expensive and produces a large amount of sediment, and it cannot meet the purpose of removing polymers. In addition, it is mainly refractory organic matter, so it contributes the most to the COD of sewage
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[0027] The present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments.
[0028] Such as figure 1 As shown, a catalytic air flotation separation device for efficient demulsification and depolymerization includes a catalytic contact chamber 1, an air flotation separation zone 2, a water collection pool 3 and a slag collection tank 4, and the catalytic contact chamber 1 is formed by pressurized dissolved air flotation The unit is composed of an electrode plate catalytic unit, and a jet high-speed stirring device 10 is arranged on the side of the electrode plate catalytic unit. The incoming water enters through the water inlet pipe 14, and the water pump 5 pumps part of the return water from the sump 3 into the dissolved air tank 6, and the air compressor 7 supplies air and ensures that the pressure of the water pump 5 will not have a large loss. The pressure dissolved air water is evenly distributed to the bottom of the catal...
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Abstract
The invention belongs to the technical field of treatment of oil-containing polymer-containing wastewater, and specifically relates to a catalytic air-flotation separating device for efficiently breaking emulsion and removing polymers. The catalytic air-flotation separating device comprises a catalytic contact chamber, an air-floatation separating zone, a water collecting tank and a slag collecting slot, wherein the catalytic contact chamber is formed by combining a pressurized dissolved air air-flotation unit with an electrode plate catalyst unit, and a jet-flow high-speed stirring device is arranged on the side surface of the electrode plate catalyst unit. One side of the catalytic contact chamber is connected with a water inlet tube from which inlet water enters; a water pump is used for pumping partial returned water from the water collecting tank into a dissolved air tank; and an air compressor is used for supplying air and guaranteeing that water pressure of the water pump is free of relatively great loss. Pressurized dissolved air is uniformly distributed to the bottom of the catalytic contact chamber by virtue of a pipeline and a pressurized dissolved air releaser; an electrode plate catalysis module is arranged above the pressurized dissolved air releaser; active groups such as H and OH<-> produced by electrifying have catalytic activity, can be used for modifying and condensing soluble high-molecular polymers and oils in oil extraction wastewater after being mixed with the oil extraction wastewater at a high speed, and can be removed by virtue of air flotation.
Description
technical field [0001] The invention belongs to the technical field of treatment of oil production sewage, and in particular relates to a catalytic air flotation separation device for highly efficient demulsification and depolymerization of oil production sewage. Background technique [0002] Oil production sewage is the largest sewage source in the petroleum industry, accounting for about 90% of the total oilfield sewage. If a large amount of oilfield sewage is not treated thoroughly, direct discharge will cause serious water environmental pollution and waste of resources; reinjection into the formation will lead to formation blockage, reduce formation permeability, and result in a decline in production. In order to improve the recovery rate of oil wells, many oil fields are currently entering the stage of secondary or tertiary oil recovery, and the oil production sewage contains a large amount of emulsified oil, dissolved oil, macromolecular polymer (PAM) and other polluta...
Claims
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IPC IPC(8): C02F1/40C02F1/24
Inventor 董滨林树森林升耀
Owner 杭州广联新能源科技有限公司