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Zero emission treatment method and special treatment system for reverse osmosis concentrated water difficult to decompose

A technology of reverse osmosis concentrated water and treatment system, which is applied in the field of zero discharge treatment method and special treatment system of refractory reverse osmosis concentrated water, which can solve the problems of high cost, inability to achieve zero discharge treatment, cumbersome and complicated treatment steps, etc.

Active Publication Date: 2016-12-07
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a zero-discharge treatment method and a special treatment system for refractory reverse osmosis concentrated water, so as to solve the problems of high cost, cumbersome and complicated treatment steps and inability to deal with existing refractory reverse osmosis concentrated water. The problem of achieving zero discharge treatment

Method used

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  • Zero emission treatment method and special treatment system for reverse osmosis concentrated water difficult to decompose
  • Zero emission treatment method and special treatment system for reverse osmosis concentrated water difficult to decompose
  • Zero emission treatment method and special treatment system for reverse osmosis concentrated water difficult to decompose

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Embodiment 1

[0039] Such as figure 1 As shown, the patented zero discharge treatment system for refractory reverse osmosis concentrated water provided by the present invention includes an activated carbon adsorption unit, an ultrafiltration-reverse osmosis unit and an electrochemical treatment module.

[0040] Wherein the activated carbon adsorption unit comprises a primary activated carbon filter bed 1 and a secondary activated carbon filter bed 2; the secondary activated carbon filter bed 2 is arranged downstream of the primary activated carbon filter bed 1; the primary activated carbon filter bed 1 and the secondary activated carbon filter bed 2 are both It is set as a funnel-shaped cylinder at the bottom, with a water inlet at the lower end and a water outlet at the upper end of the cylinder, and a powdered activated carbon adsorption layer 3, a primary activated carbon filter bed 1 and a secondary activated carbon filter bed are provided inside the cylinder 2 are countercurrent adsorp...

Embodiment 2

[0052] The refractory reverse osmosis concentrated water is processed through the special treatment system prepared in Example 1, and its specific treatment steps are as follows:

[0053] (1) Adsorption treatment: Start the first water inlet pump, pump the refractory reverse osmosis concentrated water into the primary activated carbon filter bed 1 for adsorption, and the filtered water after the adsorption treatment of the primary activated carbon filter bed 1 flows out from the water outlet and Store in the first water storage tank 8; start the second water inlet pump 9, pump the filtered water in the first water storage tank 8 into the secondary activated carbon filter bed 2, and the filtered water after the adsorption treatment of the secondary activated carbon filter bed 2 from The water outlet flows out and is stored in the second water storage tank 12; the mass ratio of the refractory reverse osmosis concentrated water and powdered activated carbon consumption is 1800-200...

Embodiment 3

[0060] The professional treatment system prepared in Example 1 and the treatment method in Example 2 are used to treat the refractory reverse osmosis concentrated water filtered by double-membrane technology (i.e. ultrafiltration-reverse osmosis) in petrochemical enterprises. The initial COD is 132.0mg / L , pH value is 8.0, the changes of the refractory reverse osmosis concentrated water after each step of treatment and the final treatment results are shown in Table 1 and image 3 shown.

[0061] Table 1 Treatment process and treatment results of refractory reverse osmosis concentrated water with initial concentration of 132.0 mg / L and pH value of 8.0

[0062]

[0063] In Table 1, the effluent COD refers to the chemical oxygen demand in the treated wastewater, and the effluent DOC refers to the dissolved organic carbon in the treated wastewater.

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Abstract

The invention relates to a zero emission treatment method for reverse osmosis concentrated water difficult to decompose. The method comprises the following steps: (a) creation of a treatment system; (b) adsorbing treatment by using an activated carbon filter bed; (c) filtering treatment by using an ultrafiltration component and a second-level reverse osmosis component; (d) electric treatment by using an electrocatalytic oxidation module and a capacitive deionization module; the reverse osmosis concentrated water difficult to decompose is finally treated into fresh water and strong brine, the fresh water is recycled, the strong brine is evaporated to dryness, so that the purpose of zero emission is fulfilled. Meanwhile, the invention further discloses a special treatment system using the treatment method. The special treatment system is simple in structure; the treatment method is easy in operation; the treatment cost is low, and the purification efficiency is high; the reverse osmosis concentrated water difficult to decompose, especially waste water from a petrochemical enterprise, is completely purified to achieve zero emission; the popularization and application of the treatment method and the special treatment system on a large scale has a very high social benefit.

Description

technical field [0001] The invention relates to the field of sewage treatment devices and treatment methods, in particular to a zero-discharge treatment method and a special treatment system for refractory reverse osmosis concentrated water. Background technique [0002] Industrial and agricultural water consumption is increasing year by year, and its drainage components are becoming more and more complex. This is in stark contrast to the current situation in my country where water resources are seriously polluted and industrial wastewater treatment and reuse standards are becoming increasingly stringent. This has led to increasingly prominent contradictions between supply and demand of water resources. Seriously restricted the rapid and healthy development of the national economy. In this context, industrial wastewater treatment and recycling have become an inevitable choice for environmental protection and sustainable utilization of water resources. The double-membrane proc...

Claims

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Application Information

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IPC IPC(8): C02F9/06C02F9/10
CPCY02A20/131C02F9/00C02F1/04C02F1/283C02F1/441C02F1/444C02F1/4672C02F1/4691
Inventor 赵春霞张春辉丁月桥张爱琳刘微梁淑轩李占臣
Owner HEBEI UNIVERSITY
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