Acrylon wastewater deep treatment method based on dry method

A dry-process acrylic fiber and advanced treatment technology, which is applied in natural water body treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of wastewater treatment not up to standard, and overcome the narrow pH range, Reduce the amount of treated water and increase the flux of nanofiltration

Inactive Publication Date: 2015-10-07
SHENYANG RES INST OF CHEM IND +1
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Problems solved by technology

[0008] The purpose of the present invention is to provide an advanced treatment method for dry-process acrylic fiber wastewater in order to solve the problem that the wastewater treatment of dry-process acrylic fiber production enterprises is not up to standard

Method used

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  • Acrylon wastewater deep treatment method based on dry method

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Embodiment

[0032] Such as figure 1 As shown, taking the waste water of the Fushun Petrochemical Acrylic Fiber Plant as the treatment target, the water quality of the dry acrylic fiber waste water after the second-level biochemical treatment of the wastewater: COD 200-400mg / L, BOD 5 0-20mg / L, SS is 0-100mg / L, ammonia nitrogen is 70-150mg / L, pH is 6.7-7.5, temperature is 30-35°C, treated water volume is 0.5m 3 , Is the pilot scale.

[0033] The multi-media filter is a filter with anthracite and quartz sand double-layer filter material as the core. The filling height ratio of the two filter materials is 4:3. The raw water enters the multi-media filter, and is dispersed to the filter bed through the internal water distributor of the multi-media filter to reduce the turbidity of the water, and the effluent enters the subsequent treatment process. Control filtration speed 8.8m / h, washing intensity 8-10L / S·m 2 , Air washing strength 10-15L / S·m 2 , The pressure is 0.6MPa. When the time reaches one...

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Abstract

The invention belongs to the technical field of industrial wastewater treatment and particularly relates to an acrylon wastewater deep treatment method based on a dry method. The acrylon wastewater deep treatment method based on the dry method comprises the steps that acrylon wastewater to be treated is pretreated through multi-medium filtration, so that suspension organic matter is removed; then the acrylon wastewater enters a nanofiltration system, recalcitrant organic matter and ammonia nitrogen in the wastewater are separated and concentrated so that produced water can be directly discharged according to the standard; denitrification treatment continues to be conducted on concentrated water generated by the nanofiltration system through a nitrosification-anaerobic ammonia oxidation system, then water subjected to denitrification treatment enters a heterogeneous-phase electro-catalysis unit to be subjected to an oxidation reaction, so that recalcitrant organic matter in the concentrated water is removed, and nanofiltrated concentrated water is discharged according to the standard. According to the acrylon wastewater deep treatment method based on the dry method, pollutants in the acrylon wastewater can be effectively degraded and removed, and technical feasibility is provided for acrylon wastewater deep treatment based on the dry method.

Description

Technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and specifically is an advanced treatment method for dry acrylic fiber wastewater. Background technique [0002] The pollutants in dry-process acrylic wastewater mainly include sulfate, AN, DMF, EDTA, organic amines, oils and polyacrylonitrile oligomers. The wastewater is transparent and light yellow in appearance, high in oligomer content, and complex in composition. Poor biodegradability and the presence of bio-inhibitory components. The amount and quality of water fluctuates greatly and is difficult to deal with. It is a major problem in the current water treatment field. [0003] For the research of acrylic fiber wastewater, the current end treatment technology is developed. The processes used mainly include carbon black or activated carbon contact oxidation method for biological pretreatment, coagulation air flotation pretreatment-anaerobic-aerobic biological process, activ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/38
Inventor 安鹏张军马文静段秀梅张恺扬
Owner SHENYANG RES INST OF CHEM IND
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