System for carrying out softening treatment on reverse osmosis concentrated water by means of induced crystallization

A technology of reverse osmosis concentrated water and induced crystallization. It is used in descaling and water softening, water/sludge/sewage treatment, complex/solubilizer treatment, etc. It can solve problems such as environmental impact and water waste, and reduce Emissions, small investment, high environmental and economic benefits

Inactive Publication Date: 2016-11-16
STATE GRID HEBEI ENERGY TECH SERVICE CO LTD +2
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it cannot be recycled and discharged directly, it will not only cause waste of water resources, but also cause environmental impact

Method used

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  • System for carrying out softening treatment on reverse osmosis concentrated water by means of induced crystallization
  • System for carrying out softening treatment on reverse osmosis concentrated water by means of induced crystallization

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Embodiment 1

[0020] (1) The average water quality of the primary and secondary concentrated water of #3 and #4 reverse osmosis systems in a plant is shown in Table 1. The content of PTP-0100 antiscalant in system operation is 16mg / L.

[0021] Table 1 Test water quality

[0022]

[0023] (2) Start the feed water pump and adjust the water inlet flow to the preset value. Measure the turbidity of the effluent water every 30s. When the turbidity of the fluidized bed effluent is stable, turn on the dosing pump to add softener, quickly adjust the dosing flow rate to the preset value, and the softening-induced clarification process begins.

[0024] (3) Test water quality according to Table 1, choose NaOH as softener. The amount of softener is represented by the specific consumption of softener (N), and N is defined as the alkalinity of NaOH and test water (JD m ) ratio of moles. In order to guarantee HCO3 - It is completely neutralized with NaOH, and the theoretical value of N is 1.0.

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Abstract

The invention relates to a reverse osmosis concentrated water induced crystallization softening treatment system, which includes a reverse osmosis concentrated water collection tank, a softener storage tank and an induced crystallization reactor. The bottom inlet of the induced crystallization reactor is connected, the softener storage tank is connected with the bottom inlet of the induced crystallization reactor through the softener dosing pump and the softener flow regulating valve, and the top outlet of the induced crystallization reactor is connected with the softened water outlet through the outlet pipe The outlet pipe is connected with the inlet of the feed water pump through the return pipe, the return pipe is provided with a backflow regulating valve, and the middle part of the induced crystallization reactor is provided with a sampling port. The invention realizes the recovery and utilization of the concentrated water of the reverse osmosis system, that is, most of the concentrated water of the reverse osmosis is recovered, only a small amount of the backwash water of the reactor is discharged, and all the industrial salt components in the concentrated water of the reverse osmosis are recycled, realizing the reverse osmosis Reliable recycling of permeate concentrated water.

Description

technical field [0001] The invention belongs to the technical field of industrial waste water reuse, and in particular relates to a reverse osmosis concentrated water induced crystallization softening treatment recovery system of a power plant make-up water treatment system. Background technique [0002] When reverse osmosis technology is used for water treatment, a certain amount of concentrated water will be produced, especially when fresh water is produced from brackish water, the amount of concentrated water is even greater than that of fresh water. If it cannot be recycled and discharged directly, it will not only cause waste of water resources, but also cause environmental impact. At present, the reverse osmosis concentrated water treatment methods mainly include: deep well injection, filter flushing, dust removal for boilers, salt production, electrolysis, membrane distillation, and membrane crystallization. The invention proposes the technology of using induced crys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/00C02F5/08
CPCC02F5/00C02F5/08
Inventor 高燕宁刘克成侯文龙何彩燕
Owner STATE GRID HEBEI ENERGY TECH SERVICE CO LTD
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