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133 results about "Grease trap" patented technology

A grease trap (also known as grease interceptor, grease recovery device, grease capsule and grease converter) is a plumbing device (a type of trap) designed to intercept most greases and solids before they enter a wastewater disposal system. Common wastewater contains small amounts of oils which enter into septic tanks and treatment facilities to form a floating scum layer. This scum layer is very slowly digested and broken down by microorganisms in the anaerobic digestion process. Large amounts of oil from food preparation in restaurants can overwhelm a septic tank or treatment facility, causing release of untreated sewage into the environment. High-viscosity fats and cooking grease such as lard solidify when cooled, and can combine with other disposed solids to block drain pipes.

Method for treating and recycling waste water of steel plants

The invention relates to a method for treating and recycling waste water of steel plants, which belongs to sewage treating and recycling technology field. The method comprises the steps that: the waste water of the steel plants flows through a grating collecting pit; the waste water treated from the grating collecting pit is lifted to a sand settling grease trap by a submersible sewage pump; the waste water treated from the sand settling grease trap flows into an equalizing tank to adjust water quality and water amount, and then is quantificationally lifted into an eddy current reactor containing lime by the pump; the waste water treated from the eddy current reactor flows into a machinery acceleration clarification pool, then flows into an MSBR system and an intermediate pool in sequence, afterwards is driven into a precision filter by a filtering pump to remove suspension; the filtered water is sufficiently contacted with ozone for ozone disinfection; the disinfected waste water flows into a reuse pool and is driven to each reuse water point; and thus the whole process of treating and recycling the waste water of the steel plants is achieved. The invention has the advantages of high temperature backwater system for water supplement, all for production, realization of waste water free-discharging, environmental protection and water resource conservation.
Owner:CHINA NORTH ENERGY CONSERVATION & ENVIRONMENT PROTECTION

Automobile shock absorber

InactiveCN101162034AOvercome the shortcomings of oil leakage (seepage)To achieve the effect of no leakageLiquid based dampersEngineeringPiston rod
The invention provides an automobile oscillating damper, comprising an outer barrel, an inner barrel, a cylinder rod, a piston and hydraulic liquid, wherein, the part of the cylinder rod arranged inside a working cylinder is covered with an elastic grease trap sleeve, the upper end of the grease trap sleeve is fixed on a piston rod guide holder, while the lower end of the grease trap sleeve is fixed on a lower ledger plate of the piston; the piston rod guide holder is provided with a grease nipple which leads to the working cylinder and is covered by a grease nipple cover; the grease trap sleeve is of a wavy and cylindrical shape and is embedded with a ring-shaped framework along the circumferential direction in a spaced manner. The invention changes the state that oil liquid directly touches the cylinder rod and the piston rod guide holder which have relative movement in the prior oscillating damper, and the structure that an oil seal is used to seal the cylinder rod and the piston rod guide holder, instead, oil liquid is sealed in the grease trap sleeve by the invention, thereby not only relative movement between the cylinder rod and the piston rod guide holder but also oscillation damping effect is not influenced; the invention can also achieve the non-leakage effect of oil liquid, has simple structure, easy achievement and can be widely applied to various vehicles.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD

Method for centralized treatment and comprehensive utilization of foam drainage during gas production in oil-gas fields

PendingCN108911332AImprove the effect of low temperature multiple effect evaporation treatmentModerate operating costsWaste water treatment from quariesSludge treatment by de-watering/drying/thickeningElectrolysisSoftened water
The invention discloses a method for centralized treatment and comprehensive utilization of foam drainage during gas production in oil-gas fields. The method comprises the steps: firstly, collecting the drainage into a grease trap for treatment so as to obtain solid sludge and preliminarily-treated drainage; and conveying the treated drainage to a coagulation air-floatation degreasing device, andperforming aeration and degreasing treatment so as to obtain solid sludge and secondarily-treated drainage; conveying the obtained drainage to an iron-carbon micro-electrolysis device, performing a micro-electrolysis reaction so as to obtain sludge after the reaction treatment is conducted, conveying the obtained drainage to a softening reaction sedimentation tank, performing softening hardness removal treatment, performing settlement to obtain sludge, conveying the obtained drainage to a water softening pool for softening treatment so as to obtain qualified softened water, and conveying the obtained qualified softened water into a water purification pool, wherein the obtained qualified water can be directly applied to re-injection or multi-effect evaporation treatment and is subjected toup-to-standard discharge; and performing centralized treatment and recovery on the sludge obtained in the steps. Grease and salts in the foam drainage wastewater during gas production can be recoveredfully, the foam drainage obtained after the centralized treatment is conducted can be introduced into an evaporation system for evaporation treatment, and the obtained drainage is subjected to up-to-standard discharge and can be utilized comprehensively as oilfield re-injection water, so that resource utilization is achieved.
Owner:PUYANG TIANDIREN ENVIRONMENTAL PROTECTION TECH CO LTD
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