Alcaligenes faecalis and application thereof

Abstract

The invention discloses an alcaligenes faecalis and application thereof. The alcaligenes faecalis is named alcaligenes faecalis (Alcaligenesfaecalis) NR and is stored in the China General Microbiological Culture Collection Center (CGMCC) with CGMCCNo.7543 on April 28, 2013. The alcaligenes faecalis is applicable to the treatment of nitrogen-containing organic wastewater and can be used for synchronously removing nitrogen and organic carbon in the wastewater. The alcaligenesfaecalis NR has both functions of denitriding and removing the organic carbon synchronously, only needs one aerobic stage to realize the synchronous removal of the organic carbon and nitrogen, and has the removal rate of about 80 to 90% for the organic ratio, and the removal rate of about 78 to 88% for TN (Total Nitrogen).

Description

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AI Technical Summary

Benefits of technology

The Alcaligenes faecalis strain described in this patent has several advantages for wastewater treatment: 1. It can remove both nitrogen and organic carbon simultaneously. It can convert organic nitrogen or NH4+ into gaseous products like N2O and N2 under aerobic conditions. It can also effectively remove organic carbon in wastewater. This means that only one stage of aerobic treatment is needed to remove both nitrogen and organic carbon, with removal rates of around 80-90% for organic carbon and 78-88% for TN. 2. Using this strain eliminates the need for separate aerobic nitrification and anoxic denitrification processes, reducing space and costs. 3. The denitrification process is carried out by a single heterotrophic bacteria, avoiding the need for a combination of autotrophic nitrifying bacteria and heterotrophic denitrifying bacteria. This strain has a fast growth rate, shortening system startup time and improving treatment efficiency. 4. The strain can tolerate high concentrations of organic carbon and nitrogen sources, making it suitable for treating high C/N ratio organic wastewater. It can achieve 100% removal of ammonia nitrogen and over 80% removal of TOC in high ammonia nitrogen and high organic carbon wastewater. In summary, the application of this Alcaligenes faecalis strain can improve the efficiency and economic benefits of traditional wastewater treatment processes, with broad application potential and positive social and environmental benefits.

Problems solved by technology

Technology Problem addressed in this patented technical problem relates to developing effective methods or agents capable of effectively degradating harmful substances in aquatic systems containing excessive amounts of organics called nitroorganilbons, including butterferon nitrosamines, cyclohexane diazotinitrilum salts, etc., without causing secondary pollution. Current separation techniques involve physical separators like settling tanks and membranes, leading to complexity and cost issues associated with existing purifications.

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