Method of enhancing organism treatment domestic sewage by employing complex enzyme biological accelerant

Abstract

The invention discloses a living effluent harness reinforcing method through biological complex enzyme accelerant, which is characterized by the following: putting 0. 5-15mg / L complex enzyme accelerant into biological disposing unit; activating and restoring the native microbe in the living effluent; emulsifying, decomposing or disintegrating the pollution in the water body; eliminating the harmful material to transmit and decompose the organic pollution; fitting for active sludge method process unit, sequent-batch typed interval activity sludge method (SRB) biological process unit and contact oxidizing, biological filter pond, biological rotary disc process unit; discharging possible biological safe problem due to engineering bacteria with simple technique and low operating cost.

Description

【Technical field】 [0001] The invention relates to the technical field of environmental protection, in particular to a method for strengthening biological treatment of domestic sewage by using a compound enzyme bioaccelerator. 【Background technique】 [0002] Economic development has brought about the continuous expansion of urbanization scale, and a large amount of domestic sewage will flow into urban rivers and surrounding water systems, resulting in the deterioration of the water environment. According to statistics, more than 90% of urban rivers in my country are currently polluted at different levels. However, in my country's current urban construction, the construction of environmental protection facilities is relatively lagging behind, and the treatment rate of urban sewage is usually less than 50%. Since the current factories have generally moved from the city center to the outskirts of the city, the city center is mainly dominated by domestic sewage. In the absence o...

AI Technical Summary

Problems solved by technology

However, at this stage, there are not many examples of using genetically engineered bacteria to strengthen biological treatment in the biological treatment unit of domestic sewage treatment.

This is because, first of all, due to the slow multiplication rate of many engineering strains, it is difficult to maintain long-term strain dominance in the treatment unit; secondly, because the cultivation environment of engineering strains is very different from domestic sewage, engineering strains There is an adaptation process to the living environment of domestic sewage and the original microbial population in domestic sewage, so its survival rate is greatly reduced; thirdly, due to the complex water quality components of domestic sewage, the added engineering bacteria will lose activity and loss Intensified, making the fixed carrier partly invalid, it is necessary to regularly replenish or continuously add engineering strains, or use immobilization technology to fix the strains in the carrier and add them to the biological treatment unit, which requires continuous engineering strains Cultivation and reproduction, it not only increases the operational difficulty of enhanced biological treatment of domestic sewage, but also increases the cost of treatment

For the above reasons, the effect of adding engineering bacteria to domestic sewage for bioaugmentation treatment is not ideal.

In addition, there is another reason that is critical. Due to the difficulty in predicting and evaluating the environmental biological safety of using engineered bacteria, it is difficult to popularize and apply the technology of using genetically engineered bacteria to treat domestic sewage at present.