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Treatment method for carton packaging and printing production wastewater

A technology for production wastewater and a treatment method, which is applied to the treatment of printing production wastewater and carton packaging, can solve the problems of difficult discharge of effluent, swelling of sludge in aerobic systems, and difficulty in meeting discharge requirements, and achieves improved biodegradability, The effect of preventing sludge bulking and reducing operating costs

Inactive Publication Date: 2013-06-19
HEFEI ZHONGDA ENVIRONMENT SCI & TECH
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  • Description
  • Claims
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Problems solved by technology

However, this method is mainly due to the fact that the effluent is difficult to meet the discharge standards, especially in terms of COD and chromaticity, it is difficult to meet the discharge requirements, and the aerobic system is prone to sludge bulking

Method used

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  • Treatment method for carton packaging and printing production wastewater
  • Treatment method for carton packaging and printing production wastewater

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Embodiment Construction

[0020] like figure 1 Shown, a kind of carton packaging and printing production wastewater treatment method, its steps are:

[0021] a. Adjust the pH value of the printing and packaging production wastewater to about 3 in the pH adjustment pool, so that the resin pollutants (such as water-soluble ink) dissolved in the wastewater can be separated from the water;

[0022] b. Separating the floating scum after acid analysis from the waste water;

[0023] c. Wastewater enters the aerated micro-electrolysis reactor for aerated micro-electrolysis reaction, and the macromolecules, long chains, and ring-shaped refractory organic substances in the wastewater are opened and broken;

[0024] d. The wastewater after micro-electrolysis flows into the chemical reaction tank to add alkali (such as NaOH), adjust the pH value to 8-9 to form precipitates or flocs; the alkali can also be Ca(OH) 2 , it is preferred to add NaOH here, because the solid waste generated by adding NaOH is less, redu...

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Abstract

The invention discloses a treatment method for carton packaging and printing production wastewater. The treatment method comprises the following steps of: a, adjusting the pH value of the carton packaging and printing production wastewater to be between 2 to 4, performing acid precipitation reaction, and eliminating floating dross; b, performing aeration micro-electrolysis reaction on the wastewater after acid precipitation; c, adding alkali in the wastewater after micro-electrolysis, adjusting the pH value to be between 8 to 9 and generating a precipitate, and removing the precipitate generated by the reaction; d, conveying the wastewater after precipitation in an aerobiotic treatment pond and performing biochemical treatment; and e, precipitating the wastewater after the biochemical treatment and then draining to the outside, wherein the aeration micro-electrolysis reaction performs a strong oxidation reaction in an aeration micro-electrolysis reactor; fillers in the aeration micro-electrolysis reactor are waste iron scraps and active carbon; the mass ratio of the waste iron scraps to the active carbon is (1 to 3): 1; and the wastewater after the biochemical treatment is precipitated in an SBR (sequencing batch reactor) pond, and the supernatant is drained after reaching the standard. The treatment method disclosed by the invention is low in construction and use costs, and capable of preventing the sludge bulking of an SBR system and guaranteeing the stable running of the system.

Description

technical field [0001] The invention relates to a treatment method for waste water, in particular to a treatment method for carton packaging and printing production waste water. Background technique [0002] With the continuous development of the commodity economy, the packaging economy of various commodities on the market promotes the rapid development of clothing bags. In addition to the packaging of household appliances, clothing, etc., the packaging business is constantly penetrating into all walks of life in the commodity economy, so one after another The pollution problem of the packaging manufacturing industry in the future will also follow. Carton production wastewater contains acrylic acid, colored groups, shredded paper pulp, and starchy substances, which are difficult to biodegrade. The main pollutants are COD, SS, chroma, etc., and the biodegradability of the wastewater is poor. [0003] At present, the domestic treatment of printing, packaging and printing prod...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 王宏王宁盛伟
Owner HEFEI ZHONGDA ENVIRONMENT SCI & TECH
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