Pump industry suppliers to tell you: submerged pump used in coal chemical industry wastewater treatment

submerged pump used in coal chemical industry wastewater treatment

coal is composed of inorganic and organic matter of two parts. Therefore, the coal will leave after processing minerals - Ash organic matter in addition to the carbon and hydrogen, and oxygen, sulfur, nitrogen and other elements, so in the coal processing products of natural contains oxygen, sulfur, nitrogen, organic and inorganic compounds, them as a chance of pollutants is much higher than the average of the hydrocarbon.

in most cases, the sulfur content in coal by pyrite sulfur in most, it generated in combustion gas SO2 and SO escape, corrosion of equipment, and pollute the atmosphere. In gasification, the sulfur in coal washing process in the form of hydrogen sulfate into water bodies, generally speaking, in the use of cold gas, coal gas washing wastewater phenol content of up to 1500 mg/L, the environmental pollution is serious, must carry out sewage purification treatment.

now coal chemical production process, often used in submerged water pump coal water slurry gasification process, gasifier gasification process, in order to control the furnace temperature, avoid bed sintering, joined in the gasification agent steam much more water vapor than theory, in addition to the furnace exit gas spray washing system and some condensation heat recovery system, most did not decompose would come with gas, steam condensation in the cooling system, produce large amounts of gas water. In gasifier device of liquid waste, mainly containing tar, light oil, crude phenol, ammonia and sulfur and other five kinds of pollutants.

in the gasifier pressurized gasification sewage treatment in the process of production, usually adopted method is to deal with a number of layers of gas, water, oil and tar separation and recovery, recycling and processing of phenol, recovery of ammonia, finally to discharge wastewater after biochemical treatment. In addition, there are engineering requirements for pollutant removal rate is higher. Through this kind of wastewater pretreatment + biochemical secondary treatment process to ensure that engineering of wastewater discharging standard, in order to achieve the standards of coal gasification of COD and ammonia nitrogen wastewater treatment process of the specific as follows: the gas water separation, removing phenol, ammonia recovery and biochemical treatment.

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