Oil Industry Filtration

Direct reuse of filter backwash wastewater to enhance coagulation effect

The water purification plant produces a large amount of production wastewater every day, including the sludge discharge water from the sedimentation tank and the backwash water from the filter tank, accounting for about 3% to 10% of the water supply of the water plant. At present, this part of the production wastewater is either directly …

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Optimization of Cyanide Removal Process from Coking Wastewater

Coking wastewater source and water characteristics The organic compounds in coking wastewater are complex, the main organic compounds are CODcr content 2500-4500mg/L; cyanide 10-20mg/L; DOD51200-2000mg/L; NH3-N400-1000mg/L; phenol 150-200mg/L; sulfide 6-15mg/L; oil 200-1000mg/L, pH6.5-8.5. The source of coking wastewater is the process of pyrolyzing coal to obtain coke and gas, and recovering by-products such as tar …

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Circuit board wastewater reuse reverse osmosis system technology

The circuit board production process mainly includes cutting, grinding, circuit, etching, development, film release, chemical copper deposition, gold plating, circular electroplating and other processes. In addition to heavy metal ions such as Cu, Ni and Sn, the wastewater discharged from each production process also contains complexing agents such as EDTA and sodium tartrate. At the …

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Treatment method of petrochemical oily sewage suspended sludge bed

In the process of oilfield exploitation, a large amount of oily sewage will be produced. At present, in the treatment process of oily sewage, the oil removal effect of sewage is not ideal. The oil removal rate of sewage is low, especially the removal effect of polar oil in sewage is poor, and most of …

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Improvement of Feed Filter of Residue Hydrodesulfurization Unit

Two different types of feed filters, wedge wire filter and wire mesh filter, were used in the refinery in the wax oil hydrocracking unit and the residue hydrodesulfurization unit. The results show that both types of filters can be used to filter vacuum paraffin oil, and the backwash cycle of the filter element in the …

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The Process of Applying Backwashing Slurry Filter In Catalytic Cracking Unit

Through the analysis of the application status of the slurry filter in the catalytic cracking unit, it is considered that the feed temperature of the slurry should not be too high, otherwise the backwashing oil in the regeneration process will be passively used back for refining. The design requirements of the slurry filter should be improved …

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