A regenerated water manufacturing device and method based on electrolysis and double-membrane technology

A technology for manufacturing devices and reclaimed water, applied in chemical instruments and methods, biological water/sewage treatment, water/sewage treatment, etc. Total COD emissions and odor elimination effect

Inactive Publication Date: 2011-11-30
BOYING XIAMEN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems existing in the existing sewage regeneration and recycling technology, and provide a method that can overcome the poor quality of regenerated water in the existing sewage regeneration technology, which is difficult to meet the water quality requirements of industrial production process water, and has large investment and operating costs. Reclaimed water manufacturing device based on electrolysis and double-membrane technology, which can reduce sewage discharge and improve water utilization efficiency due to defects such as high and secondary pollution to the environment

Method used

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  • A regenerated water manufacturing device and method based on electrolysis and double-membrane technology
  • A regenerated water manufacturing device and method based on electrolysis and double-membrane technology
  • A regenerated water manufacturing device and method based on electrolysis and double-membrane technology

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Deep purification regeneration and recycling project of 500 tons / day sewage.

[0047] The water quality of the sewage is shown in Table 2.

[0048] Table 2 Water quality of sewage

[0049]

[0050] Step 1, electrolysis: start the water supply pump 12, and the sewage 3 The / h flow rate enters the electrolysis machine 13 through the stop valve 11 for electrolysis. The working voltage of the electrolysis is 12V, the voltage between the two poles is 3.5-8.0V, and the current density is 130mA / cm 2 , under the action of current, strong oxidizing substances such as nascent chlorine [Cl], hydroxyl [OH] and nascent oxygen [O] produced by electrolysis can not only kill plankton and bacteria in sewage, but also make The macromolecules in the sewage are opened or chain broken, so that the macromolecules that are difficult to biodegrade are decomposed into small molecules, increasing the BOD 5 / COD Cr Ratio, improve the biodegradability of sewage; at the same time, oxidize a...

Embodiment 2

[0060] The deep purification regeneration and recycling project of 3000 tons / day sewage.

[0061] The water quality of the sewage is shown in Table 5.

[0062] Table 5 Water quality of sewage

[0063]

[0064] Step 1, electrolysis: start the water supply pump 12, and the sewage is 3 The / h flow rate enters the electrolysis machine 13 through the stop valve 11 for electrolysis. The working voltage of the electrolysis is 48V, the voltage between the two electrodes is 5.5-8.0V, and the current density is 190mA / cm 2 , under the action of current, strong oxidizing substances such as nascent chlorine [Cl], hydroxyl [OH] and nascent oxygen [O] produced by electrolysis can not only kill plankton and bacteria in sewage, but also make The macromolecules in the sewage are opened or chain broken, so that the macromolecules that are difficult to biodegrade are decomposed into small molecules, increasing the BOD 5 / COD Cr Ratio, improve the biodegradability of sewage; at the same ti...

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Abstract

Provided is an apparatus for producing reclaimed water based on electrolysis and double membrane technologies. The apparatus is disposed with an electrolysis system, an MBR system and a reverse osmosis system. Further provided is a method for producing reclaimed water using the apparatus, comprising the following steps: retrieving biochemical sewage through a water pump (12) and inputting the biochemical sewage into an electrolysis apparatus (13) of the electrolysis system to be electrolyzed, then enabling the sewage to enter an MBR reaction tank (26) through a grid (22) to obtain primary reclaimed water, pumping the primary reclaimed water into the reverse osmosis system with a high pressure pump (45) to separate dialysis water and concentrated water, enabling the dialysis water to enter a reclaimed water storage tank (48) to obtain ultrapure reclaimed water, enabling a part of the concentrated water to flow back for cyclic membrane filtering and separation, enabling a part of the concentrated water to flow back to enter an electrolysis procedure for cyclic use, and discharging the rest part of the concentrated water.

Description

technical field [0001] The invention relates to a high-purity reclaimed water manufacturing device and a method thereof, in particular to a high-purity reclaimed water manufacturing device and a method thereof in which electrolysis technology and double-membrane technology are combined. Background technique [0002] The problem of water resources and environmental pollution has been increasingly valued by human society. On the one hand, the amount of fresh water is increasing, and water resources are becoming increasingly scarce. On the other hand, the amount of sewage discharge is increasing, and the environmental pollution is becoming more and more serious. It has received more and more attention from various countries. China is a country seriously short of water resources. The per capita fresh water resources are only a quarter of the world's average level. It is one of the 13 most water-deficient countries in the world. More than 400 cities are short of water, so the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F3/1268C02F1/4672C02F1/441C02F9/00C02F2001/46142Y02W10/10
Inventor 张世文
Owner BOYING XIAMEN SCI & TECH
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