Treatment method and system for simultaneously removing total organic carbon and total nickel in power plant desulfurization wastewater
A technology for desulfurization wastewater and total organic carbon, which is applied in the field of water treatment and can solve problems such as environmental pollution by power plant desulfurization wastewater
Active Publication Date: 2022-03-18
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to provide a treatment method and system for simultaneously removing total organic carbon and total nickel in power plant desulfurization wastewater. The system solves the problem of environmental pollution caused by power plant desulfurization wastewater. Environmental emission standards can also be applied to production systems in the steel industry
The invention belongs to the steel green environmental protection production process system
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[0021] An advanced treatment system for removing total organic carbon and total nickel in power plant desulfurization wastewater, including an inlet pump, an integrated inclined tube sedimentation tank, a compound chemical dosing system, a compound heavy metal precipitant, a lift pump, a depth filter, and an improved Attapulgite filter material, aluminum modified activated carbon filter material, drainage pump.
[0022] The desulfurization wastewater of the power plant has been treated by neutralization and precipitation, and its water quality characteristics are as follows: electrical conductivity is 6200-23500 μs / cm, total organic carbon is 45-65 mg / L, and total nickel is 8-19 mg / L.
[0023] The desulfurization wastewater of the power plant enters the integrated inclined tube sedimentation tank through the water inlet pump. The front part of the integrated sedimentation tank is a stirring area, and the rear part is an inclined tube sedimentation area. The compound medicament...
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Abstract
The invention belongs to the technical field of water treatment, and specifically relates to a treatment method and system for simultaneously removing total organic carbon and total nickel in power plant desulfurization wastewater, comprising the following steps: the power plant desulfurization wastewater enters an integrated inclined tube sedimentation tank through an inlet pump, The compound heavy metal precipitant is added to the stirring zone through the automatic control system and the dosing pump, and the compound heavy metal precipitant and the desulfurization wastewater are fully mixed in the stirring zone; the desulfurization wastewater passes through the integrated sedimentation tank and enters the depth filter through the lift pump, and the depth filter The middle and lower layers are equipped with modified attapulgite filter material and the upper layer is equipped with modified activated carbon filter material; the treated desulfurization wastewater from the power plant is discharged up to the standard through the drainage pump, or can be further processed for industrial reuse. The removal of total organic carbon and total nickel in the desulfurization wastewater is realized, and the process of the invention has low one-time investment; the waste liquid treatment effect is stable; the production operation cost is low; the degree of automation is high and the operation is simple.
Description
technical field [0001] The invention belongs to the technical field of water treatment, and relates to a treatment process for power plant desulfurization wastewater, in particular to a treatment method and system for simultaneously removing total organic carbon and total nickel in power plant desulfurization wastewater Background technique [0002] my country's power supply structure is dominated by thermal power, of which coal-fired thermal power generation accounts for more than 70% of the total annual power generation. Among many flue gas desulfurization methods, limestone-gypsum wet flue gas desulfurization is currently the most mature and widely used desulfurization technology in the world. It uses calcium-based absorbents (limestone or lime) as desulfurizers. During the flue gas contact process, the sulfur dioxide in the flue gas is removed, and part of the pollutants in the flue gas, such as metals and organic pollutants, will also be transferred to the desulfurizati...
Claims
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IPC IPC(8): C02F9/04C02F1/52C02F1/28B01J20/20B01J20/30C02F101/20C02F101/30C02F103/18
CPCC02F9/00C02F1/5236C02F1/529C02F1/283B01J20/0248B01J20/20C02F2103/18C02F2101/30C02F2101/20C02F1/5281C02F1/001
Inventor 余国平李恩超王广坤张波耿立志
Owner BAOSHAN IRON & STEEL CO LTD