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Recycling method for wastewater from production line of formed foil

A waste water recycling and production line technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sewage treatment, etc. The effect of prolonging the service life and reducing the dosage

Inactive Publication Date: 2019-08-20
四川石棉华瑞电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for recycling waste water from a foil production line, which solves the problem that the current production line uses too much pure water and the cost is too high; the production line produces a large amount of waste water, and it is difficult to treat the waste water at the back-end sewage station , the treatment cost is high; the amount of discharged water is large, and the problem of paying a large amount of sewage charges

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for recycling wastewater from a chemical foil production line, comprising the following steps:

[0023] Step 1, separately collecting the phosphorous-containing rinsing water, bath liquid waste water and phosphorous-free rinsing water produced by the foil production line;

[0024] Step 2. According to the water quality of phosphorus-containing rinsing water required by the chemical foil production line and the water quality of non-phosphorus rinsing water, the recovery equipment is selected. The recovery equipment includes a security filter with a pore size of ≤5 μm and a reverse osmosis membrane with a pore size of ≤1 nm , In addition to treating inorganic ions, bacteria, viruses, organic matter, etc. in water;

[0025] Step 3, the phosphorus-containing rinsing water is subjected to instant ozone treatment, and maintained in an anaerobic environment for more than 48 hours, and then treated by the Fenton method. Phosphorus-containing rinse water contains a con...

Embodiment 2

[0028] A method for recycling wastewater from a chemical foil production line, comprising the following steps:

[0029] Step 1, separately collecting the phosphorous-containing rinsing water, bath liquid waste water and phosphorous-free rinsing water produced by the foil production line;

[0030] Step 2. According to the water quality of phosphorus-containing rinsing water required by the chemical foil production line and the water quality of non-phosphorus rinsing water, the recovery equipment is selected. The recovery equipment includes a security filter with a pore size of ≤5 μm and a reverse osmosis membrane with a pore size of ≤1 nm , In addition to treating inorganic ions, bacteria, viruses, organic matter, etc. in water;

[0031] Step 3, the phosphorus-containing rinsing water is subjected to instant ozone treatment, and maintained in an anaerobic environment for more than 48 hours, and then treated by the Fenton method. Phosphorus-containing rinse water contains a con...

Embodiment 3

[0034] A method for recycling wastewater from a chemical foil production line, comprising the following steps:

[0035] Step 1, separately collecting the phosphorous-containing rinsing water, bath liquid waste water and phosphorous-free rinsing water produced by the foil production line;

[0036]Step 2. According to the water quality of phosphorus-containing rinsing water required by the chemical foil production line and the water quality of non-phosphorus rinsing water, the recovery equipment is selected. The recovery equipment includes a security filter with a pore size of ≤5 μm and a reverse osmosis membrane with a pore size of ≤1 nm , remove inorganic ions, bacteria, viruses, organic matter, etc. in the treated water; the reverse osmosis membrane is installed in the reverse osmosis tube, and the reverse osmosis tube is installed on the membrane shell support through a U-shaped card, and the reverse osmosis tube A shock-absorbing pad is set between the U-shaped card to abso...

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Abstract

The invention specifically relates to a recycling method for wastewater from a production line of formed foil, belonging to the field of wastewater recycling. The method comprises the following steps:step 1, separately collecting phosphorus-containing rinsing water, bath liquid wastewater and generated phosphorus-free rinsing water produced by the production line of formed foil; step 2, selectingrecovery equipment according to the water quality of the phosphorus-containing rinsing water needed by the production line of formed foil, and the water quality of the phosphorus-free rinsing water;and step 3, treating the collected phosphorus-containing rinsing water and the phosphorus-free rinsing water by using the recovery equipment. The method of the invention reduces the amount of pure water used in the production line; and according to the method, wastewater is separated from different stages separately and are then reused after treatment, and particularly, the phosphorus-containing rinsing water, the bath liquid wastewater and the generated phosphorus-free rinsing water produced by the production line of formed foil are reused, so high-load operation of pure water equipment is avoided, the service life of pure water equipment is prolonged, and cost is saved.

Description

technical field [0001] The invention relates to the field of waste water recycling, in particular to a method for recycling waste water from a formed foil production line. Background technique [0002] In the chemical foil production line, the workshop water needs to be prepared by pure water equipment. After the tap water passes through the pure water equipment, two kinds of water, concentrated water and pure water, come out. The concentrated water is returned to the original water pool for reuse, and the pure water is used for workshop production. Wire. [0003] The wastewater generated in the workshop is divided into: ① production line bath liquid, accounting for 10% of the total wastewater; ② phosphorus-free rinsing water generated by the production line (water samples with a total phosphorus value less than 3mg / L), accounting for 40% of the total wastewater %; ③ Phosphorus-containing rinsing water (water samples with a total phosphorus value greater than 100mg / L) produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F1/001C02F1/04C02F1/38C02F1/441C02F1/725C02F1/78C02F9/00C02F2001/007
Inventor 顾东辉谭德州严涛查洪峰
Owner 四川石棉华瑞电子有限公司
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