Novel heavy metal adsorption agent and method for removing heavy metal in industrial waste water through adsorption
A technology for industrial wastewater and heavy metals, applied in chemical instruments and methods, water pollutants, biological water/sewage treatment, etc., can solve problems such as high cost of adsorbents and complex production processes, and achieve low cost of wastewater treatment and great application prospects , to achieve the effect of resource recycling
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[0010] Example 1
[0011] The Aspergillus niger slant strain was inoculated on the seed medium for shaking flask culture, after 24h culture at 27-30℃, rotation speed 160rpm, inoculated into the fermentation medium for fermentation tank culture, at 30℃, rotation speed 160rpm, ventilation volume 2.5~3m 3 Cultivate for 24 hours per hour to obtain the fermentation broth of Aspergillus niger. After filtering the fermentation broth of Aspergillus niger, the bacteria balls with diameter = 20-50mm in diameter are dried to obtain dried bacteria balls with moisture content less than 10%.
[0012] Wherein, the seed medium is: glucose 20g / L, yeast extract 5g / L, peptone 6g / L; the fermentation medium is: glucose 80g / L, soybean meal powder 10g / L, KNO31g / L, KH 2 PO 4 1g / L, FeCl 2 ·6H 2 O0.05g / L,CaCl 2 ·7H2O
[0013] 0.02g / L, MgSO 4 ·7H 2 O 1g / L, CaCO 3 40 g / L.
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[0014] Example 2
[0015] Prepare 0.1g / L lead standard solution 1L, adjust the pH value to be greater than 3, put the dried bacteria balls obtained in 1 into the adjustment tank of the lead standard solution, after 18 hours of aeration and stirring, after testing, the content of heavy metals in the lead standard solution Less than 0.01g / L.
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