Desulfurization wastewater zero discharge treatment system and desulfurization wastewater zero discharge treatment process
A desulfurization wastewater and treatment system technology, which is applied in the direction of gaseous effluent wastewater treatment, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high operation and maintenance costs, large investment costs, and long process flow. Achieve the effects of fast evaporation rate, water saving and system operation
Pending Publication Date: 2019-01-18
山西华仁通电力科技股份有限公司
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[0005] The purpose of the present invention is to solve the technical problems of long process flow, high investment cost, high operation and maintenance cost in the existing desulfurization wastewater treatment system, as well as the technical problems of flue corrosion and potential safety hazards caused by flue evaporation technology, and provide a Zero discharge treatment system and process for desulfurization wastewater
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[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0039] Such as figure 1As shown, a zero-discharge treatment system for desulfurization wastewater in this embodiment includes a boiler tail flue system, a pretreatment system connected in sequence, a concentration reduction system, and a high-efficiency tail liquid treatment system. The pretreatment system is used to remove Calcium and magnesium hardness and suspended solids in desulfurization wastewater, the concentration reduction system is used to concentrate and reduce the pretreated desulfurization wastewater, and the tail liquid high-efficiency treatment system is used to atomize the concentrated tail liquid evaporation;
[0040] The boiler tail flue system includes a boiler tail flue 27, an air preheater 28 and a dust collector 29 sequentially installed in the inner cavity of the boiler tail flue 27;
[0041] The pretreatment system i...
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The invention relates to a desulfurization wastewater zero discharge treatment system and a desulfurization wastewater zero discharge treatment process, aiming at solving the technical problems that the existing desulfurization wastewater zero discharge treatment system and desulfurization wastewater zero discharge treatment process are long in process flow, high in investment cost and high in operation and maintenance costs, and cause flue corrosion and safety hazards due to the use of a flue evaporation technology. The system provided by the invention comprises a boiler tail flue system, anda pretreatment system, a concentration reduction system and a high-efficiency tail liquid treatment system which are sequentially connected, wherein the pretreatment system is used for removing calcium and magnesium hardness and solid suspended matters in the desulfurization wastewater; the concentration reduction system is used for carrying out concentration reduction on the pretreated desulfurization wastewater; the high-efficiency tail liquid treatment system is used for carrying out atomization evaporation of the concentrated tail liquid; the system and the method, which are provided by the invention, realize the zero discharge of the desulfurization wastewater by means of the pretreatment system, the concentration reduction system and the tail liquid treatment system which are sequentially connected; the waste heat of the flue gas at the tail of a boiler is utilized to realize the cascade utilization of energy in the treatment process; the system and the process have the advantages of high efficiency and energy conservation.
Description
technical field [0001] The invention belongs to the technical field of desulfurization wastewater treatment, and in particular relates to a zero-discharge treatment system and process for desulfurization wastewater. Background technique [0002] During the operation of the desulfurization device, a large amount of wastewater is regularly discharged, that is, desulfurization wastewater. The wastewater has the characteristics of high concentration of suspended solids, high concentration of inorganic salts and heavy metal ions. The existing desulfurization wastewater treatment process is a traditional three-box process, including neutralization-sedimentation-flocculation and other processes. The treated water quality must meet the national "Sewage Comprehensive Discharge Standard "GB8978-1996 Class I Standard and DL / T997 "Water Quality Control Indicators for Limestone-Gypsum Wet Desulfurization Wastewater in Thermal Power Plants". However, the chlorine ions in the water cannot...
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IPC IPC(8): C02F1/16C02F103/18
CPCC02F1/16C02F2103/18
Inventor 李婉然赵波波郝美杨文生马元元张缠保赵清波刘慧军
Owner 山西华仁通电力科技股份有限公司
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