Integrated treatment process for glassine paper production wastewater

A technology for producing wastewater and glassine paper, which is applied in the process of wastewater treatment, sustainable biological treatment, water/sewage multi-stage treatment, etc. The effect of improved biodegradability

Pending Publication Date: 2022-07-12
河南君和环保科技有限公司
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AI Technical Summary

Problems solved by technology

Advanced oxidation technologies are mainly Fenton reagent oxidation and ozone oxidation. Fenton reagent oxidation produces a large amount of sludge and high operating costs, while ozone oxidation has higher operating costs and ozone oxidation is selective and the oxidation effect is poor.
The problems of the above treatment process are: low treatment efficiency, poor system stability and high operating costs

Method used

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  • Integrated treatment process for glassine paper production wastewater
  • Integrated treatment process for glassine paper production wastewater
  • Integrated treatment process for glassine paper production wastewater

Examples

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Effect test

Embodiment 1

[0016] A special paper production enterprise produces glassine paper with a certain proportion of coniferous and hardwood pulp boards, and the waste water discharge per ton of product is 18m 3 , PVA consumption per ton of product is 5.5 kg, and enterprise wastewater discharge is 7000 m 3 / d, various pollution indicators of wastewater are shown in Table 1.

[0017] Table 1 Various water quality indicators of glassine paper production wastewater

[0018]

[0019] like figure 1 As shown, the integrated treatment process of glassine paper production wastewater in the present embodiment, the steps include

[0020] (1) pH adjustment of wastewater: the pH value of wastewater is 8.1, with CH 3 COOH adjusts the pH to 5.5~6.5.

[0021] (2) H 2 O 2 Dosing: H 2 O 2 (27.5% by mass) was added to the wastewater with pH of 5.5~6.5, taking 1L glassine paper production wastewater as the benchmark, and the amount of hydrogen peroxide added was 5%~10%wt of the COD content in the wastew...

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Abstract

The invention discloses an integrated treatment process of glassine paper production wastewater, which comprises the following steps: regulating the pH value to 5.5-6.5 by adopting CH3COOH, adding H2O2 to form a CH3COOH-H2O2 catalytic oxidation system, carrying out oxidation chain scission on PVA (Polyvinyl Alcohol) high-molecular polymer in the wastewater, carrying out hydrolytic acidification on the wastewater subjected to oxidation chain scission by adopting a sodium acetate co-degradation matrix, and further carrying out chain scission degradation on PVA, so that the biodegradability of the wastewater is further improved; and then, an aerobic contact oxidation process is adopted to ensure that the effluent reaches the standard and is discharged. Compared with the traditional two-stage biological treatment and advanced oxidation advanced treatment, the integrated treatment process for the glassine paper production wastewater, provided by the invention, has the advantages that an advanced oxidation advanced treatment process is omitted, the operation cost can be greatly reduced, and the process is stable in operation.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to an integrated treatment process for glassine paper production wastewater. Background technique [0002] Glassine paper is a release paper with anti-stick properties made of polyvinyl alcohol (PVA) coated on one or both sides of the base paper of a certain gram weight. Glassine paper is mainly used in various self-adhesive materials such as isolation paper and wrapping paper, and is widely used in stationery, home appliance packaging, hygiene products, express delivery and other industries. Glassine paper is one of the highest quality release papers; it has high smoothness and good anti-aging properties. Due to the single or double side of the paper is coated with PVA water-soluble polymer, it forms a good release effect and peeling performance. In the finishing section of the glassine paper production process, the finishing material is mainly PVA, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/66C02F1/72C02F3/30C02F103/28C02F101/30
CPCC02F9/00C02F3/302C02F1/66C02F1/722C02F1/725C02F2103/28C02F2101/30C02F2209/08C02F2209/14C02F2209/16C02F2209/18C02F2209/06C02F2209/40C02F2209/44Y02W10/10
Inventor 代吉华雷晓慧王铁忠牛波波刘飞飞丁亚运邓天宝顾富宽王文涛
Owner 河南君和环保科技有限公司
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