A method for restoring microorganism ecology of paper making waste water and a device

Abstract

The invention relates to the field of waste water processing, concretely relating to a method for restoring microorganism ecology of paper making waste water. The method comprises following procedures: (1) wiping out hunks of impurities, grains of sand, and wire nails of the paper making waste water through a barrier and a setting basin, and then purifying the waste water; (2) carrying out treatment of the waste water after the waste water entering an A / O biochemical system; after the treatment, recycling or effluxing the waste water; the A / O biochemical system comprises an anaerobic hydrolytic acidification tank and a bio-contact oxidation tank; the anaerobic hydrolytic acidification tank has an addition of EM composite flora; the bio-contact oxidation tank has an addition of plant bionic filler on which EM composite flora grows. The method for restoring microorganism ecology of paper making waste water has a utilization of efficient artificial bio-carrier bionic plant and a combination of specially effective as well as advantageous EM composite microorganism microbial inoculum to improve biochemical processing efficiency, thus reducing the whole biochemical quantities, and is propitious to not only saving of investment, but also an achievement of environmental protection.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a microbial ecological restoration method and device for papermaking wastewater. Background technique [0002] There are often one-sidedness and limitations in the engineering application of sewage biochemical treatment technology: first, insufficient attention is paid to the pretreatment before biochemical treatment, and only biochemical treatment is expected to solve all problems; second, for papermaking wastewater with high COD and BOD indicators, etc., The focus of the treatment is on high investment and strong measures, so that the project will develop in the direction of "big and comprehensive"; third, as far as the design basis of biochemical engineering is concerned, it is mainly based on BOD, ignoring the indicator of COD, making it often not up to standard. [0003] Environmental biotechnology is a high-tech discipline developed in recent years that combines modern ...

AI Technical Summary

Problems solved by technology

[0002] There are often one-sidedness and limitations in the engineering application of sewage biochemical treatment technology: first, insufficient attention is paid to the pretreatment before biochemical treatment, and only biochemical treatment is expected to solve all problems; second, for papermaking wastewater with high COD and BOD indicators, etc., The focus of the treatment is on high investment and strong measures, so that the project will develop in the direction of "big and comprehensive"; third, as far as the design basis of biochemical engineering is concerned, it is mainly based on BOD, ignoring the indicator of COD, making it often unattainable

The disadvantage of the surface binding immobilization method is that it is easily affected by environmental factors in the initial stage of immobilization, the force between the cells and the carrier is weak, it takes a long time to complete the initial immobilization, and the density is high, and there is a lot of sludge, which limits the application.

Although the microorganisms of the embedding and immobilization method are stable, the processing technology is complicated, which will lead to partial inactivation of the cells

And because the microorganisms are inside the embedding agent, the diffusion resistance is increased, making it difficult to contact with macromolecular organic pollutants and fully exert the degradation function

Especially when dealing with papermaking wastewater containing more macromolecular substrates, the effect is not good

In addition, these methods also have some common defects: easy to block, difficult to update, easy to age, expensive, short life, small specific surface area and difficult to dispose of sludge, etc.

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