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Matters needing attention in the adsorption of coking wastewater

Updated: Jul 3, 2023

Coking wastewater adsorption is the high-concentration organic wastewater produced in the process of coal coke, gas purification and coking product recovery. In addition to these words, its composition is complex, containing a large amount of organic pollutants such as phenols, biphenyls, and quinolines. Let me tell you the precautions for coking wastewater adsorption? If you are interested, you can read it.



The production wastewater adsorbed by coking wastewater passes through the wastewater conditioning tank to form difficult-to-treat inorganic and organic mixed wastewater. From the analysis of the composition, content and chemical properties of wastewater, it is necessary to adopt multi-stage barrier technology for grading and segmented treatment. In fact, its principle is "combining the maturity and reliability of the treatment technology with the economy, first use the easier-to-handle substances, and then use the difficult-to-handle substances." What needs to be understood here is the arrangement of the sequential treatment process of its pollutants ammonia, ammonia nitrogen, sulfide, thiocyanate, and benzopyrene. Among them, ammonia and ammonia nitrogen can pass through ammonia evaporator, steam stripping, alkalized ammonia and ammonia nitrogen. It is separated from waste water by methods such as methionine and converted into ammonium sulfate fertilizer. Only in this way can the adsorption of coking wastewater realize waste utilization and effectively reduce the content of ammonia and ammonia nitrogen; the air flotation degreasing agent can recycle coal tar in wastewater into chemical raw materials. The dosing flocculation process removes sulfides and thiocyanates from wastewater by coagulation sedimentation; also, it needs to be known that its auxiliary coke (nutshell or quartz sand) filter removes wastewater from wastewater. Filter out the suspended matter, carry out subsequent deep ozone treatment, reduce ozone depletion, and enhance the pretreatment effect. Through the above pretreatment process, most of the inorganic substances in the water have been treated, and the remaining pollutants to be treated are benzopyrene, ammonia nitrogen and a small amount of refractory pollutants. So what you need to know is that these mixtures adsorbed by coking wastewater have different reaction rate constants K and different reactivity in wastewater and ozone.


Coking wastewater adsorption treatment of wastewater is to use porous adsorbent to absorb one or several solutes in wastewater to achieve the purpose of purifying wastewater. Commonly used adsorbents include activated carbon, sulfonated coal, slag, diatomaceous earth, etc. This method has high processing costs and difficult regeneration of adsorbents, which is not conducive to the treatment of high-concentration wastewater. In addition, everyone needs to know that its powdered activated carbon removes COD up to 98.5%; at the same time, the particles of powdered activated carbon have the best particle size range, and the adsorption of coking wastewater, especially the powdered activated carbon with a particle size of 0.09mm, is used for coking wastewater COD removal High rate. In addition, the treatment of wastewater with fly ash is one of the hotspots in the comprehensive utilization of fly ash in recent years. The main components of fly ash are silica and silicates. As an adsorbent for the advanced treatment of coking wastewater, fly ash has good decolorization effect, good removal effect on COD, volatile phenol, oil, etc., and low cost. The adsorption of coking wastewater should be evenly and densely distributed in all water bodies without leaving any dead space, which is also an important mass transfer factor affecting the treatment effect. Insufficient contact between air bubbles and wastewater will seriously affect the treatment effect (no matter how much ozone is added!). If you still have questions that you don't understand, you can call us at any time for consultation. There are online customer service staff here to receive you, no matter what questions you have, they will help you answer them patiently.


The above content is the precautions for coking wastewater adsorption that Xiaobian told all friends. Other knowledge points about coking wastewater adsorption will continue to be updated in the next issue. Remember to pay more attention to the website so as not to miss the exciting content.

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