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A vibration membrane treatment method and device for desulfurization wastewater

A technology for desulfurization wastewater and treatment method, which is applied in gaseous effluent wastewater treatment, multi-stage water treatment, water/sewage treatment, etc. The effect of operating cost, realizing harmless treatment and discharge, and saving process cost

Active Publication Date: 2019-06-04
BEIJING GUODIAN FUTONG SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the purpose of the present invention is to solve the problem of the high cost of chemicals caused by pretreatment and evaporation crystallization of desulfurization wastewater in the prior art, and the inability to fully utilize the impurity products in the desulfurization wastewater treatment process, resulting in increased treatment costs, so as to achieve resource utilization. And the defect of the double consideration of the economy, and then provides a desulfurization wastewater vibration membrane treatment method and device

Method used

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  • A vibration membrane treatment method and device for desulfurization wastewater
  • A vibration membrane treatment method and device for desulfurization wastewater
  • A vibration membrane treatment method and device for desulfurization wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Example 1 Vibrating membrane treatment of desulfurization wastewater

[0046] according to figure 1 The process flow chart in the process of desulfurization wastewater vibration membrane treatment, the specific steps are as follows:

[0047] 1) Pass the desulfurization wastewater into the first vibrating nanofiltration membrane for primary nanofiltration, and the recovery rate of produced water in the primary nanofiltration is 65%;

[0048] 2) Pass the primary concentrated water obtained in step 1) into the second vibrating nanofiltration membrane for secondary nanofiltration, and the recovery rate of product water in the secondary nanofiltration is 57%; the primary product obtained in step 1) is The water is forced into the reverse osmosis membrane to further filter the reverse osmosis concentrated water and reverse osmosis product water, and the reverse osmosis product water is reused to production. 3) return the secondary product water obtained through step 2) to t...

Embodiment 2

[0057] Example 2 Vibrating membrane treatment of desulfurization wastewater

[0058] according to figure 1 The process flow chart in carries out desulfurization wastewater vibration membrane treatment, and concrete steps are as follows:

[0059] 1) Pass the desulfurization wastewater into the first vibrating nanofiltration membrane for primary nanofiltration, and the recovery rate of produced water in the primary nanofiltration is 60%;

[0060] 2) passing the primary concentrated water obtained in step 1) into the second vibrating nanofiltration membrane for secondary nanofiltration, and the recovery rate of produced water in the secondary nanofiltration is 55%;

[0061] The primary product water obtained in step 1) is forced into the reverse osmosis membrane for further filtration to obtain reverse osmosis concentrate water and reverse osmosis product water, and the reverse osmosis product water is reused to production. The recovery rate of product water in reverse osmosis i...

Embodiment 3

[0064] Embodiment 3, desulfurization wastewater vibration membrane treatment

[0065] according to figure 1 The process flow chart in carries out desulfurization wastewater vibration membrane treatment, and concrete steps are as follows:

[0066] 1) Pass the desulfurization wastewater into the first vibrating nanofiltration membrane for primary nanofiltration, and the recovery rate of produced water in the primary nanofiltration is 65%;

[0067] 2) passing the primary concentrated water obtained in step 1) into the second vibrating nanofiltration membrane for secondary nanofiltration, and the recovery rate of produced water in the secondary nanofiltration is 65%;

[0068] The primary product water obtained in step 1) is forced into the reverse osmosis membrane for further filtration to obtain reverse osmosis concentrated water and reverse osmosis product water, and the reverse osmosis product water is reused to production. The recovery rate of reverse osmosis product water is...

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Abstract

The invention discloses a desulfurization wastewater vibration membrane treatment method and device, and belongs to the field of wastewater recovery and utilization. The method comprises the following steps that (1) desulfurization wastewater is subjected to primary nanofiltration to obtain primary producing water and primary concentrated water; (2) the primary concentrated water is subjected to secondary nanofiltration to obtain secondary concentrated water and secondary producing water; the primary producing water is subjected to reverse osmosis filtering to obtain reverse osmosis concentrated water and reverse osmosis producing water; (3) the reverse osmosis concentrated water flows back for performing primary nanofiltration again; the secondary producing water flows back for performing primary nanofiltration again; the secondary concentrated water is used for slag flushing. The process does not need the softening pretreatment step; no carnallite treatment link exists; the carnallite innocent treatment and discharging is really realized.

Description

technical field [0001] The invention belongs to the field of waste water recovery and utilization, and in particular relates to a method and device for treating desulfurization waste water with a vibrating membrane. Background technique [0002] At present, with the improvement of national discharge standards, zero-discharge treatment of desulfurization wastewater is gradually implemented. The existing desulfurization wastewater treatment process generally includes softening pretreatment such as neutralization, precipitation, coagulation, final neutralization and mud dehydration treatment (adding medicine to coagulate and clarify desulfurization wastewater, removing most of hardness, alkalinity and suspended matter; softening The effluent enters the filtration system to further remove suspended solids; the sludge produced by the chemical reaction enters the dehydration system for desliming), membrane concentration treatment (concentration treatment with various types of memb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/44C02F103/18
CPCC02F1/441C02F1/442C02F2103/18C02F2301/08
Inventor 滕济林胡溪杨万强李若征张培林丁绍峰赵崇李星伟
Owner BEIJING GUODIAN FUTONG SCI & TECH DEV
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