Air purification cooling waste water treatment method for viscose glue fiber workshop

A technology for production workshop and air purification, applied in infiltration/dialysis water/sewage treatment, etc., can solve problems such as distance, achieve the effect of reasonable process route, ensure stable operation, and reduce suspended solids

Inactive Publication Date: 2006-12-20
HANGZHOU WATER TREATMENT TECH DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the electrodialysis method was used to carry out experimental research on the recovery of chemical raw materials and pure water from the second-bath acid wastewater in viscose fiber production, and positive results have also been achieved. However, it is required to recycle production and ensure high-quality products

Method used

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  • Air purification cooling waste water treatment method for viscose glue fiber workshop
  • Air purification cooling waste water treatment method for viscose glue fiber workshop
  • Air purification cooling waste water treatment method for viscose glue fiber workshop

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: Press figure 1 The process flow chart shown is established, and the daily wastewater treatment capacity is 12,000 tons.

[0044] Its process equipment is:

[0045]

[0046] 1), Wastewater sterilization treatment

[0047] The pretreatment process runs continuously. Add 3 grams of oxidant chlorine dioxide per ton of wastewater, first mix it into water, inject it into the pipeline by means of pump quantitative delivery, and carry out stirring and sterilization. The processing time of the process section is generally 10-30 minute;

[0048] 2), flocculation and filtration treatment

[0049] Add the flocculant ST at an amount of 0.8 grams per ton of wastewater, first mix it into an aqueous solution, and then use a pump to pour it into the pipeline quantitatively. After mixing and flocculating for 5 to 10 minutes, the suspended particles and colloidal substances are flocculated into larger sizes;

[0050] 3), Multi-media filter filtration

[0051] Put the st...

Embodiment 2

[0074] As the method and steps of embodiment 1, the sterilizing agent in process step 1 wherein is sodium hypochlorite. Or constant use of hydrogen peroxide and ozone can also be used instead.

Embodiment 3

[0076] Like the method and steps of Example 1, the flocculant in the process step 2 is MPT100 (produced by Argo Scientific). Alternatively, polyaluminum chloride (PAT) can be used instead.

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Abstract

The invention discloses a treatment process of air purification and wastewater cooling in cellulose viscose production department including: 1) biocidal treatment of wastewater, 2) the treatment of flocculation, 3) filtration in a plurality of filters, 4) addition of reducing agent, 5) addition of acid, 6) addition of antisludging agent, 7) precise filtration, 8) reverse osmosis treatment, 9) chemical scrubbing, 10) deaerated treatment, 11) reducing acidity by adding alkali to reach index demand of water recycle with the PH value being 7-8. The invention is used for treatment of air purification and wastewater cooling in cellulose viscose production department, and reduces suspended matter effectively to ensure the stable operation of counter-osmosis device and improve the quality of process recycle water, as the result that the process includes disinfection, flocculation, and through pretreatment and backwash of multiple-media filter and precise filter, that ensure the improvement of the quality of cellulose viscose products.

Description

technical field [0001] The invention belongs to industrial wastewater treatment and reuse. Specifically, it is a recycling process for treating air purification and cooling waste water in a man-made viscose fiber spinning workshop by using a reverse osmosis membrane process technology (including a device). Background technique [0002] According to the current situation of domestic production of viscose fiber, for every ton of silk produced, the cooling water consumption for air purification in the spinning workshop is 80 tons, and the annual production of viscose fiber is about 1 million tons, and the water resource consumption is very huge. The cooling waste water is generally only used for flushing the floor, or used for backwashing resin softeners and other low-quality water occasions, and finally undergoes biochemical treatment and discharge. [0003] With the application of membrane wastewater treatment technology, the applicant has succes...

Claims

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Application Information

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IPC IPC(8): C02F1/44
Inventor 宋德政谭永文卢光荣
Owner HANGZHOU WATER TREATMENT TECH DEV CENT
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