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Backwashing method of primary filter and secondary filter of reverse osmosis water treatment system

A technology for treating system and reverse osmosis water, applied in the field of water treatment, can solve the problem of not being able to reduce external drainage for self-use, and achieve the effects of reducing external drainage for self-use, reducing labor intensity of employees, and saving water production costs

Active Publication Date: 2017-10-13
INNER MONGOLIA BAOTOU STEEL UNION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese Publication No. CN201210410242 discloses a chemical cleaning method of ultrafiltration reverse osmosis process, but this technology cannot reduce self-use external drainage

Method used

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Embodiment Construction

[0013] The technical solutions of the present invention will be described in detail below with reference to preferred embodiments.

[0014] The reverse osmosis process is: extraction of raw water from the Yellow River → clarification in the clarification tank → primary filter filtration → secondary filter filtration → activated carbon filter filtration → primary reverse osmosis → secondary reverse osmosis.

[0015] A method for backwashing a primary filter and a secondary filter of a reverse osmosis water treatment system, the steps of which include:

[0016] Step 1: After the single-tank sterilization of the primary filter and the secondary filter is completed, reduce the normal washing time in the backwashing step of the primary filter, and backwash once every 24 hours;

[0017] The first system has 10 primary filters. When the water supply is guaranteed, 2 to 4 primary filters are running at the same time, 20 secondary filters are running at the same time, and 8 to 12 secon...

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Abstract

The invention discloses a method for backwashing a primary filter and a secondary filter of a reverse osmosis water treatment system, comprising: after the single tank sterilization of the primary filter and the secondary filter is completed, reducing the Increase the normal washing time, and backwash once every 24 hours; reduce the normal washing time in the backwash step of the secondary filter, and backwash once every 24 hours. The invention can minimize self-use external drainage and reduce production costs under the condition of ensuring water quality.

Description

technical field [0001] The invention relates to a water treatment method, in particular to a method for backwashing a primary filter and a secondary filter of a reverse osmosis water treatment system. Background technique [0002] In recent years, due to the continuous expansion of Baotou Steel's production capacity, in order to meet the production needs, the water supply plant has increased its water intake from the Yellow River water source. The new water intake is not directly proportional, which requires Baotou Steel to practice its internal skills and tap its own potential. It is against this background that the water supply plant pays close attention to the external drainage for self-use in the water production process, and reduces the external drainage for self-use through various measures. Therefore, improving the unreasonable links in the process of the reverse osmosis water treatment system, and minimizing the external drainage for self-use while ensuring the wate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D35/16C02F9/02
Inventor 李彬葛献文郑树盛牛伟秦冕徐奕
Owner INNER MONGOLIA BAOTOU STEEL UNION