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Method for treating industrial wastewater generated by papermaking

A treatment method and technology for industrial wastewater, applied in biological water/sewage treatment, water/sewage treatment, light water/sewage treatment, etc., can solve problems such as low treatment efficiency

Inactive Publication Date: 2020-06-19
柏威达(南京)环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the COD and BOD values ​​in the wastewater produced by papermaking are relatively high, and the treatment technology adopted is relatively conventional, and the treatment efficiency is low, so further improvement is still needed.

Method used

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  • Method for treating industrial wastewater generated by papermaking
  • Method for treating industrial wastewater generated by papermaking

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A kind of industrial wastewater treatment method that papermaking produces of the present embodiment comprises the following steps:

[0026] Step 1, accumulation of waste water: send the waste water generated from papermaking into the waste water tank for accumulation, then add activated composite bacteria into it, and then seal the tank with film for fermentation, the fermentation temperature is 35°C, and the fermentation is 4 days;

[0027] Step 2, primary filtration: the waste water fermented in step 1 is discharged into the primary filter pool, and activated carbon is added into the primary filter pool to filter and reduce precipitation;

[0028] Step 3, irradiation treatment: send the wastewater settled in step 2 into the light purification pool, add nano-titanium dioxide into the light purification pool, and then use ultraviolet rays and gamma rays for irradiation treatment in sequence;

[0029] Step 4, electrochemical treatment: irradiating ultraviolet rays and g...

Embodiment 2

[0036] A kind of industrial wastewater treatment method that papermaking produces of the present embodiment comprises the following steps:

[0037] Step 1, accumulation of waste water: send the waste water produced by papermaking into the waste water tank for accumulation, then add activated composite bacteria into it, and then seal the tank with film for fermentation, the fermentation temperature is 45°C, and the fermentation is 10 days;

[0038] Step 2, primary filtration: the waste water fermented in step 1 is discharged into the primary filter pool, and activated carbon is added into the primary filter pool to filter and reduce precipitation;

[0039] Step 3, irradiation treatment: send the wastewater settled in step 2 into the light purification pool, add nano-titanium dioxide into the light purification pool, and then use ultraviolet rays and gamma rays for irradiation treatment in sequence;

[0040] Step 4, electrochemical treatment: irradiating ultraviolet rays and gam...

Embodiment 3

[0047] A kind of industrial wastewater treatment method that papermaking produces of the present embodiment comprises the following steps:

[0048] Step 1, accumulation of waste water: send the waste water produced by papermaking into the waste water tank for accumulation, then add activated composite bacteria into it, and then seal the tank with film for fermentation, the fermentation temperature is 40°C, and the fermentation is 7 days;

[0049] Step 2, primary filtration: the waste water fermented in step 1 is discharged into the primary filter pool, and activated carbon is added into the primary filter pool to filter and reduce precipitation;

[0050] Step 3, irradiation treatment: send the wastewater settled in step 2 into the light purification pool, add nano-titanium dioxide into the light purification pool, and then use ultraviolet rays and gamma rays for irradiation treatment in sequence;

[0051] Step 4, electrochemical treatment: irradiating ultraviolet rays and gamm...

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Abstract

The invention discloses a method for treating industrial wastewater generated by papermaking. The method comprises the following steps: 1, accumulation of wastewater: feeding wastewater generated by papermaking into a wastewater pool, accumulating, adding an activated composite strain into the wastewater pool, then sealing the pool by using a film, and fermenting at a fermentation temperature of 35-45 DEG C for 4-10 days; and 2, primary filtration: discharging the wastewater fermented in the step 1 into a primary filter tank, adding active carbon into the primary filter tank, and carrying outfiltration and precipitation reduction. According to the invention, inorganic substances, organic substances, particles and the like are effectively treated and finally pass through an ultrafiltrationmembrane, so that harmful substances such as impurities and the like are completely removed, and COD and BOD values in wastewater can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a method for treating industrial wastewater produced in papermaking. Background technique [0002] The papermaking industry has high energy consumption and material consumption, and is also very serious to environmental pollution. Among them, the SS and COD concentrations in wastewater are high, which bring great harm to the environment and human health. Paper industry wastewater is a kind of difficult-to-treat organic wastewater with large water volume, high chroma, large suspended solids content, high organic concentration and complex components. There are three main sources of papermaking wastewater: pulping waste liquid, mid-stage water, and paper machine white water: pulping is to separate the fibers in plant raw materials, make pulp, and then bleach it; papermaking is to dilute and shape the pulp , pressed, dried, and made into paper. The wastewate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/10C02F101/36
CPCC02F1/001C02F1/307C02F1/32C02F1/444C02F1/48C02F3/34C02F9/00C02F2001/007C02F2101/10C02F2101/36
Inventor 季威
Owner 柏威达(南京)环境科技有限公司
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