Resource-recyclable zero-discharge treatment technology and device for desulfurization wastewater in power plant

A technology for desulfurization wastewater and resource recovery, which is applied in the direction of gaseous effluent wastewater treatment, dehydration/drying/thickened sludge treatment, water/sewage treatment, etc. High-level problems, to achieve the effect of reducing the burden and the risk of fouling, good capture and removal, and low operating costs

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A technology for desulfurization wastewater and resource recovery, which is applied in the direction of gaseous effluent wastewater treatment, dehydration/drying/thickened sludge treatment, water/sewage treatment, etc. High-level problems, to achieve the effect of reducing the burden and the risk of fouling, good capture and removal, and low operating costs

CN108249646AActive Publication Date: 2018-07-06XIAMEN JIARONG TECH CO LTD

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[0063] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0064] Such as figure 2 As shown, the zero-discharge treatment device for power plant desulfurization wastewater disclosed in this embodiment includes a triple box 10, a clarifier 20, a reaction tank 30, a concentrated water tank 40, a sludge concentration tank 50, and a plate-and-frame filter press 60 , tubular UF membrane module 70, nanofiltration membrane module 80, RO membrane module 90, and bipolar membrane electrodialysis system 100; wherein the triple box 10 includes a neutralization box 101, a reaction box 102, and a flocculation box 103 connected in sequence, and the flocculation box 103 is connected to the clarification tank 20, the clarification tank 20 is connected to the reaction tank 30, the reaction tank 30 is connected to the concentrated water tank 40, the sludge outlet of the concentrated water tank 40 is connected to the s...

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Abstract

The invention discloses a resource-recyclable zero-discharge treatment technology for desulfurization wastewater in a power plant. The resource-recyclable zero-discharge treatment technology sequentially comprises triple-box pretreatment, double-alkali scale removal, tubular UF ultrafiltration, nanofiltration, reverse osmosis and acid and alkali recycling. Deep zero-discharge treatment of the desulfurization wastewater in the power plant is achieved, and sodium chloride contained in the wastewater is fully utilized and directly prepared into available acid / alkali so as to achieve resource recycling.

Description

technical field [0001] The invention relates to the technical field of power plant desulfurization wastewater treatment, in particular to a zero-discharge treatment process and device for power plant desulfurization wastewater that can be recycled and utilized. Background technique [0002] The existing power plant desulfurization wastewater treatment processes include: [0003] Patent 1 (201710412099.X) discloses a low-consumption and zero-emission treatment method for electric field desulfurization wastewater, which removes divalent and trivalent scaling ions in desulfurization wastewater by pretreating the wastewater and adding sodium hydroxide, sodium carbonate, and sodium hypochlorite and inhibit the growth of microorganisms; then use tubular ultrafiltration membranes for solid-liquid separation; then use nanofiltration to concentrate desulfurization wastewater to further remove divalent and trivalent scaling ions in desulfurization wastewater; and then perform reverse ...

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Application Information

Patent Timeline

06 Jul 2018

Publication

CN108249646A

IPC: C02F9/06; C02F103/18

CPC: C02F9/00; C02F1/444; C02F1/441; C02F1/442; C02F1/66; C02F1/4693; C02F1/5281; C02F1/5245

Inventors: 蒋林煜; 王舒东