(PDF) Pretreatment of coking wastewater by an adsorption
Gas chromatograms of coking wastewater before and after adsorption Figure 4 and infrared spectroscopic analysis (Liu et al,1999) reveal that the major functional groups of coking coal
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Gas chromatograms of coking wastewater before and after adsorption Figure 4 and infrared spectroscopic analysis (Liu et al,1999) reveal that the major functional groups of coking coal
Coal Mining and Production Industry Description and Practices Coal is one of the world''s most plentiful energy resources, and its use is likely to quadruple by the year 2020. Coal occurs in a wide range of forms and qualities. There are two broad categories: (a) hard coal, which includes coking coal (used to produce steel) and other
Coking wastewater and coal The coking wastewater used in the experiments was obtained from Huayu Coke Plant, China. It was treated by ammonia distillation. The wastewater (pH value of ) was deep brown in color and emitted a foul odor. Table 1 shows the analytical results of the coking wastewater sample. Table 1. Water quality of coking
#0183;#32;Although the United States has the vast coal resource described in the previous chapter, perhaps as much as 4 trillion tons, the key issue for policy makers is the amount of coal that is economically is not a fixed quantity, but depends on the geological resource, the market price, and the cost of mining. The particular characteristics of the coal mining industry create unique
Abstract: Coking wastewater from the process of coking, coal gas purification and the coking products refine, whose ingredients are complicated and inconstant, is hard to meet the standard of reclaimed water used for industrial water by secondary treatment. In view of this situation, the advanced treatment technique of coking wastewater was
Coal charging, coke pushing, and quenching are major sources of dust emissions. Wastewater is generated at an average rate ranging from to 4 cubic meters (m3) per ton of coke processed. Major wastewater streams are generated from the cooling of the coke oven gas and the processing of ammonia, tar, naphthalene, phenol, and light oil.
Pollutant concentrations in coal coking and phenolic coal gasification effluents were present in different relative proportions with important implications for selection and design of pretreatment processes, and for quality of biologically treated wastewater, including incentive for pretreatment by solvent extraction, relative distribution of free and fixedammonia, and impact of thiocyanate
#0183;#32;Coking wastewater is usually generated from coal coking, coal gas purification and byproduct recovery processes. These processes consist of a high concentration of ammonia, toxic and carcinogenic substances, such as phenol, cyanide (CN #226; ), thiocyanide (SCN #226; ), polycyclic aromatic hydrocarbons (Ps) and nitrogen, oxygen or sulfurcontaining heterocyclic compounds (Ghose,
Raw coal fly ash (RCFA) was used directly as adsorbent to treat coking wastewater. The results show that the RCFA can introduce COD (14, 4, and 11 mg L1 at pH =,, and, respectively) into water due to the dissolution of reductive components from RCFA, this can be avoided by washing (6 times) using distilled water.
Coal is fed into a coking system after adsorption. This study validates the feasibility of using coking coal to adsorb organic pollutants in coking wastewater. The sorption kinetics and equilibrium sorption isotherms of coking coal for removal of chemical oxygen demand (COD) and phenol from coking wastewater was also discussed in this paper.
Coke is a grey, hard, and porous fuel with a high carbon content and few impurities, made by heating coal or oil in the absence of aira destructive distillation process. It is an important industrial product, used mainly in iron ore smelting, but also as a fuel in stoves and forges when air pollution is a concern.. The unqualified term quot;cokequot; usually refers to the product derived from low
coking wastewater and the process of quinoline adsorption onto three kinds of coal follows pseudosecondorder rate kinetics. Moreover, it was found that the humic substance was easier to remove than other substances such as proteins, carbohydrates, fluorescence aromatic protein and SMPs by brown coal from the wastewater (Mohammad et al., 2017).
Wastewater is generated at an average rate ranging from cubic meters (m3) per ton of coke processed. Major wastewater streams are generated from the cooling of the coke oven gas and the processing of ammonia, tar, naphthalene, phenol, and light oil. Process wastewater may contain: 10 milligrams per liter
#0183;#32;Coal coking wastewater is simple in treatment; while semicoking wastewater is much difficult. The water consumption, water withdrawal, effluent capacity and the treatment system under different standards are listed in Table 2 as well. The wastewater composition of nine typical coal processing process are listed in Table 3.
The invention discloses a method for processing coal gasification wastewater. The method sequentially comprises the following steps: a. carrying out preprocessing on the coal gasification wastewater in a preprocessing step comprising oil removal processing, coagulation processing and optional adjustment processing; then b. leading the preprocessed coal gasification wastewater to sequentially
Coal coking operations and some coal gasification processes yield heavily contaminated effluents that may be processed by biological oxidation. Although treat ment of coke plant wastewater by biological oxidation has been practiced for a number of years, it has been only relatively recently that biological oxidation studies
#0183;#32;Johnson Screen For Coal Chemical Industry At present, the development of coal chemical industry mainly includes three industrial chains: coal coking, coal gasification and coal liquefaction. According to this, coal chemical industry wastewater can be divided into three categories: coking wastewater, coal gasification wastewater and coal liquefaction wastewater. Pretreatment
Coking Wastewater Coke Wastewater Treatment . Heating coal over 1100 Co in the absence of oxygen produces metallurgical coke. This process provides both heat and carbon (coke) required for iron production. During this process the volatile materials contained in the coal
The raw coal was utilized as adsorbent based on its remarkable adsorption ability of coal slime to organic compounds in the flotation process. This paper mainly investigates adsorption behaviors of benzpyrole (BZP), pyrrole (PR) and benzoic acid (BA) on powdered coal (PC).
#0183;#32;Investigation into Ozonation of Coal Coking Processing Wastewater for Cyanide, Thiocyanate and Organic Removal. J(Hans) van Leeuwen Iowa State University, Port Kembla, NSW, Australia, Badri Badriyha San Diego State University, Port Kembla, NSW, Australia amp; Steven Vaczi Thiess Environmental Services, Port Kembla, NSW, Australia.
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