Carrier-immobilized bacterial inhibition type water purifier for marine aquaculture and preparation method thereof
A technology for marine aquatic products and purifying agents, applied in biochemical equipment and methods, chemical instruments and methods, fixed on or in inorganic carriers, etc., can solve problems such as unsuitability for marine aquaculture, rare bacillus, and achieve high-efficiency removal Remove nitrous nitrogen, reduce activation time, and overcome the effects of frequent epidemics
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Embodiment 1
[0041] Screening, isolation and identification of embodiment 1 bacterial strain YB-01 and YB-02
[0042] 1. Preparation of culture medium:
[0043] Ammonia nitrogen degrading bacteria enrichment screening medium: (NH4) 2 SO 4 2g, NaH 2 PO 4 0.25g, MnSO 4 4H 2 O0.01g, K 2 HPO 4 0.75g, MgSO 4 ·7H 2 O 0.03g, CaCO 3 3g, aged sea water 1L, pH 7.5-8.0.
[0044] Solid medium for separation and purification of ammonia nitrogen degrading bacteria: (NH4) 2 SO 4 0.5g, NaH 2 PO 4 0.25g, MnSO 4 4H 2 O 0.01g, K 2 HPO 4 0.75g, MgSO 4 ·7H 2 O 0.03g, CaCO 3 2g, aged sea water 1 L, agar powder 12g, pH 7.5-8.0.
[0045] Nitrite nitrogen degrading bacteria enrichment screening liquid medium: NaNO 2 1g, Na 2 CO 3 1g, K 2 HPO 4 0.5g, MgSO 4 ·7H 2 O 0.03g, FeSO 4 ·7H 2 O 0.4g, aged sea water 1L, pH 7.2-7.5.
[0046] Solid medium for isolation and purification of nitrite nitrogen degrading bacteria: NaNO 2 0.5g, Na 2 CO 3 1g, K 2 HPO 4 0.5g, MgSO 4 ·7H 2 O 0.03g...
Embodiment 2
[0058] Physiological and biochemical characteristics of embodiment 2 bacterial strains YB-01 and YB-02
[0059] YB-01 and YB-02 were detected according to the physiological and biochemical detection methods of the "Bergery Bacteria Identification Handbook" (Eighth Edition), and the detection indicators included sugar fermentation, alcohol fermentation, starch hydrolysis, lipase, methyl acetylphthalein, Catalase, casein hydrolysis, protein hydrolysis, citrate utilization, tyrosine hydrolysis, phenylalanine deamination and acid production, etc.
[0060] Table 1. Physiological and biochemical characteristics of YB-01 and YB-02 strains
[0061]
[0062] Note: In Table 1, means positive, and means negative.
Embodiment 3
[0063] The performance detection of embodiment 3 bacterial strain YB-01 and YB-02
[0064] (1) Detection of ammonia nitrogen and nitrite nitrogen removal rate: the national standard phenol hypochlorite colorimetric method and naphthalene ethylenediamine hydrochloride diazo azo colorimetric method (GB_17378.4-2007) were used to detect ammonia nitrogen and nitrite nitrogen respectively state nitrogen concentration. Under simulated seawater farming conditions (mainly salinity 32‰, pH 7.5, temperature 24-26, dissolved oxygen ≧5mg / L), the initial concentration of ammonia nitrogen of YB-01 or YB-02 is 5, 10, 25 and 50mg respectively. The 24-hour ammonia nitrogen removal rate of / L simulated solution; and the 24-hour nitrite nitrogen removal rate of the two strains to the simulated solution with initial concentration of nitrite nitrogen of 0.5, 2, 5 and 10mg / L, each concentration gradient Set up 3 repetitions. The preparation method of YB-01 or YB-02 used for detection is: YB-01 or...
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