How to treat the oil in tar wastewater?

Coal tar wastewater has high concentrations of pollutants and a complex composition; in addition to ammonia nitrogen and sulfur compounds, it also contains monocyclic or polycyclic aromatic compounds such as phenols, indoles, and quinolines, as well as heterocyclic organic pollutants containing nitrogen, sulfur, and oxygen. It is considered wastewater that is difficult to treat. High-concentration coal tar wastewater is first passed through an ammonia evaporation tower before entering the wastewater treatment system, to remove ammonia nitrogen and low-boiling-point organic compounds, thereby reducing the pollution load on subsequent treatment units. The wastewater after ammonia evaporation requires two pretreatment steps: oil removal and adjustment. Oil removal helps to effectively reduce the oil content in the wastewater before it enters the biochemical treatment unit. The regulating tank can adjust the water quality and volume, preventing large fluctuations in these parameters in the wastewater entering the treatment system. The treated wastewater is fed into the subsequent biochemical system for nitrogen removal, as well as the removal of phenols, cyanides, and other toxic and harmful substances.

This post was last edited by CoCo070563 on 2015-12-3 at 14:13. Hello, our company specializes in undertaking projects for the treatment of coal tar wastewater; you can send a private message to us for discussion and inquiries

There is a air flotation oil removal technology that can be used for removing oil from coal tar wastewater

Direct ammonia evaporation of high-concentration coal tar wastewater is not effective; it takes a long time and can lead to blockages, so pretreatment is required before ammonia evaporation. It is not possible to proceed directly to the biological treatment stage after the regulating tank, as this will have an impact on the biological treatment system.

Membrane filtration can be used; it is currently applied in various industries such as machinery manufacturing and oil fields

Membrane filtration can be used; it is currently applied in various industries such as machinery manufacturing and oil fields

This can be processed using a CWL-type centrifugal extractor; it requires little space and offers high efficiency

Our company possesses professional oil-water separation technology featuring high separation efficiency, low space requirement for the equipment, no need for chemicals, pure physical separation process, and a high degree of automation. Please leave your contact information and I will send you the relevant materials

It’s possible to use our oil-water separator, with air flotation added afterwards

This post was last edited by Gorō’s Eight Trigrams Staff on 2015-12-24 at 12:56. For the treatment of oil in water, our company specializes in using interception and oil removal technologies to reduce oil levels to below 0.5PPM; we can provide more details if needed