The present invention discloses an enterobacter XM strain and its application in degradation of BDE 28. The strain is deposited in the General Microbial Center of China Microbial Culture Collection Management Committee with the date of deposit as September 12, 2017 and the deposit number as CGMCC No.14607. The strain is gram-negative bacteria, yellowish, opaque opaque round colony with raised surface. The bacterium was rod-shaped under scanning electron microscope. In liquid medium, strain XM had a good effect on the degradation of tribrominated diphenyl ether (BDE 28). Under aerobic conditionat 35 DEG C, the initial concentration of BDE 28 was 200 [mu]g/L, and the degradation rate of BDE 28 reached 54.12% after 7 days. The facultative degradation bacteria screened by the invention can utilize BDE 28 as the sole carbon source and effectively degrade BDE 28, and the invention can be used for the remediation of PBDE contaminated sites.

Enterobacter XM and application thereof in degradation of BDE 28

The invention belongs to the technical field of agricultural environmental microbial application, and particularly relates to an enterobacteria Z1 and Klebsiella Z2 complex microbial agent for removing high-nitrogen polluted wastewater and application of the complex microbial agent. The complex microbial agent is formed by isolating and screening enterobacteria Z1 (the preservation number is CCTCCNO:M2019147) and Klebsiella Z2 (the preservation number is CCTCC NO:M2019146) which are in sludge in an insecticide factory, the complex microbial agent has the capability to efficiently remove nitrogen from the high-nitrogen wastewater, and the complex microbial agent composed of the isolated strains has more efficient and complete nitrogen removal capability than other strains, is practically applied to industrial wastewater and aquaculture wastewater, and can be used as a novel microbial agent for nitrogen environment restoration in the high-nitrogen polluted water.

Enterobacteria Z1 and Klebsiella Z2 complex microbial agent for removing high-nitrogen polluted wastewater and application of complex microbial agent

The invention belongs to the technical field of wastewater treatment, and discloses a biological-enhanced treatment process for wastewater produced in lithium battery production. The process comprisesthe following steps: 1) introducing the wastewater into a hydrolytic acidification tank, and adding an Enterobacter sp.NJUST50 strain and activated sludge into the hydrolytic acidification tank for hydrolytic acidification treatment, wherein the accession number of the strain is CCTCC No. M2019128; 2) introducing effluent into an anoxic reaction tank, and adding Enterobacter sp. NJUST50 and anaerobic activated sludge for anoxic reaction treatment; 3) introducing effluent into an aerobic reaction tank, and adding Enterobacter sp. NJUST50 and aerobic activated sludge for aerobic treatment; 4) introducing effluent into an anoxic filter tank, and adding Enterobacter sp. NJUST50 and anaerobic activated sludge into the filter tank for treatment; and 5) introducing effluent into a biological aerated filter, and adding a sludge mixture of Enterobacter sp.NJUST50 and aerobic activated sludge into the filter for treatment. According to the combined treatment method provided by the invention, efficient biodegradation is realized, cost is effectively reduced, and system stability is improved.

Biologically-enhanced treatment process for wastewater produced in lithium battery production

The invention discloses a denitrification strain taking low-quality carbon source phenol as an electron donor and application thereof. The preparation method of the strain comprises the following steps: taking denitrifying activated sludge as a bacterium source, taking an inorganic salt culture medium which takes phenol as a unique carbon source and takes sodium nitrate as a unique nitrogen sourceas a screening medium, and separating and purifying by adopting a marking method, thereby obtaining the denitrification strain taking the low-quality carbon source phenol as the electron donor. The denitrification strain is Enterobacter by virtue of molecular biological identification, is named as Enterobacter sp.NJUST15, and has a collection number of CCTCC NO: M: 2017557. According to the denitrification strain disclosed by the invention, phenol can serve as the unique electron donor to carry out anoxic denitrification reaction, and mineralization degradation of phenol is synchronously realized. The Enterobacter sp.NJUST15 is inoculated into pretreated coking wastewater, and nitrate ions and phenol are respectively completely removed within 72 hours and 120 hours. The Enterobacter sp.NJUST15 has high-efficiency organic matter degradation ability and denitrification ability, has excellent tolerance performance to biotoxicity of phenol and is applicable to anoxic denitrification of high-concentration nitrate nitrogen wastewater and removal treatment of the low-quality carbon source.

Denitrification strain taking low-quality carbon source phenol as electron donor and application thereof

The invention discloses an Enterobacteriaceae strain to degrade 1-methyl-2-pyrrolidone and application thereof in wastewater treatment. The Enterobacteriaceae strain using 1-methyl-2-pyrrolidone as anelectron donor to carry out denitrification is acquired by separation and purification using an inorganic salt medium as a screening medium, which uses active sludge as a bacterial source and 1-methyl-2-pyrrolidone as a sole carbon source; the Enterobacteriaceae strain is collected under CCTCC NO: M2019128. The Enterobacteriaceae strain can carry out anaerobic denitrification by using 1-methyl-2-pyrrolidone as the sole electron donor, as well as carry out mineralization degradation of 1-methyl-2-pyrrolidone; nitric nitrogen and 1-methyl-2-pyrrolidone are removed completely respectively within15 hours and 18 hours; the Enterobacteriaceae strain has efficient organics-degrading capacity and denitrifying capacity and is suitable for the removal of high-concentration nitric nitrogen and refractory organic pollutants in wastewater.

Enterobacteriaceae strain to degrade 1-methyl-2-pyrrolidone and application thereof in wastewater treatment

The invention discloses an initiating explosive production waste water physicochemical pretreatment and biological enhancement treatment integration process, which comprises the following steps that waste water is firstly pumped into an inner electrolytic tank to realize the effective reduction of nitrocompound; the inner electrolysis outlet water enters a Fenton oxidation work section; iron ironsin the electrolysis outlet water are utilized; hydrogen peroxide is fed; organic matters and nitrine are removed; the Fenton outlet water enters a coagulation-sedimentation tank; iron ions in the Fenton outlet water are used as coagulation agents; polyacrylamide is used as a coagulant aids to remove Pb and organic matters; the sedimentation tank outlet water enters an anoxic reaction tank inwhich composite bacterium agents of NJUST-S1 is added; nitrate nitrogen in the waste water is used for denitrification so as to remove COD; outlet water in the anoxic tank is pumped into an biologicalaerated filter in which composite bacterium agents of NJUST-S2 is added; the standard reaching discharge is realized. The electrolysis-Fenton coupling technology is used; the iron mud generating quantity and the hydrogen peroxide consumption quantity are reduced; meanwhile, on the basis of the biological enhancement technology of the composite bacterium agents of NJUST-S1 and NJUST-S2, the wastewater treatment cost is effectively reduced.

Initiating explosive production waste water physicochemical pretreatment and biological enhancement treatment integration process

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Denitrification strain taking low-quality carbon source phenol as electron donor and application thereof

Enterobacteriaceae strain to degrade 1-methyl-2-pyrrolidone and application thereof in wastewater treatment

Initiating explosive production waste water physicochemical pretreatment and biological enhancement treatment integration process