Dynamic film separating method for processing sewage by using biological diatomite
A separation method and technology of diatomite, applied in the direction of sustainable biological treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve problems such as poor operation stability and complicated operation, and achieve long operation period and water permeability Large, good water permeability
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Embodiment 1
[0033] Such as figure 1 Shown, the specific implementation method of the independent unit operation of flat support biological diatomite dynamic membrane separation method is as follows:
[0034] Conditions of biological diatomaceous earth mixture in the sewage treatment process that needs to be separated:
[0035] The concentration of suspended solids (MLSS) in the biological diatomaceous earth mixture is 10-15g / L, not less than 10g / L;
[0036] The proportion of volatile suspended solids (MLVSS) in the mixed liquor is 30% to 40%, not more than 40%;
[0037] If the conditions cannot be fully met, diatomaceous earth needs to be supplemented to meet the above conditions.
[0038] The operation steps are as follows:
[0039] (1) First, select a stainless steel mesh (both 180 mesh to 200 mesh) flat support body, each flat support body 2m 2 , and 22 pieces of flat supports are assembled into a set of membrane modules, the design permeable flux of this module is 22×2×50L / m 2 .h...
Embodiment 2
[0048] Such as figure 2 As shown, the specific implementation method of the independent unit operation of the filter element support biological diatomite dynamic membrane separation method is as follows:
[0049] Conditions of biological diatomaceous earth mixture in the sewage treatment process that needs to be separated:
[0050] The concentration of suspended solids (MLSS) in the biological diatomaceous earth mixture is 10-15g / L, not less than 10g / L;
[0051] The proportion of volatile suspended solids (MLVSS) in the mixed liquor is 30% to 40%, not more than 40%;
[0052] If the conditions cannot be fully met, diatomaceous earth needs to be supplemented to meet the above conditions.
[0053] The operation steps are as follows:
[0054] (1) First select the stainless steel mesh (both 180 mesh to 200 mesh) filter element support body, each commercial finished filter element has a length of 0.8m, a regular hexagonal cross-section, a circumscribed circle diameter of 0.05m, ...
Embodiment 3
[0063] Such as image 3 As shown, the specific implementation method of the continuous flow operation of the multi-unit combined biological diatomite dynamic membrane separation method of the support body is as follows:
[0064] Conditions of biological diatomaceous earth mixture in the sewage treatment process that needs to be separated:
[0065] The concentration of suspended solids (MLSS) in the biological diatomaceous earth mixture is 10-15g / L, not less than 10g / L;
[0066] The proportion of volatile suspended solids (MLVSS) in the mixed liquor is 30% to 40%, not more than 40%;
[0067]If the conditions cannot be fully met, diatomaceous earth needs to be supplemented to meet the above conditions.
[0068] The operation steps are as follows:
[0069] (1) The biological diatomaceous earth dynamic membrane separation process runs continuously, and adopts multi-unit combination operation. Among them, one unit component is always in the cleaning state, and several other unit...
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Abstract
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