Microbial biolysis process
阅读：859发布：2021-02-20
专利汇可以提供Microbial biolysis process专利检索，专利查询，专利分析的服务。并且The method of treating sewage or other biodegradable waste materials in a system including an aerobic process wherein a settleable sludge is formed which comprises returning a part or all of the sludge to a point in advance of the input of the aerobic process and subjecting a selected portion of the returned sludge to heat or vacuum under conditions suitable for the biolysis of the microorganisms in said portion, the portion being selected to meet the food requirements of the active aerobic organisms in the aerobic process. The portion subjected to biolysis is so regulated that substantially all of the biodegradable matter is consumed and only a relatively small quantity of said matter is removed to end disposal.，下面是Microbial biolysis process专利的具体信息内容。
2. The method set forth in claim 1 in which the said third portion is maintained at a temperature of about 180* F. for a period of the order of 1 minute.
3. The method set forth in claim 1 in which the heating is effected by a submerged flame.
4. The method set forth in claim 1 in which the heating is effected by a submerged electric arc.
5. The method set forth in claim 1 in which the heating is effected by passing an electric current through said third portion.
6. The method set forth in claim 1 in which the heating is effected by a heat exchanger in series with a heat source for preheating the third portion by the treated sludge.
7. The method of purifying aqueous waste material containing biodegradable organic matter in a system including an aerobic biological oxidation step wherein a mixed liquor is formed containing purified suspending liquid and biologically active solid matter suspended therein, which comprises separating a sludge containing said biologically active solid matter from said purified suspending liquid whereby said purified suspending liquid constitutes the effluent from the process, removing a portion of said sludge from said system, returning a second portion of said sludge containing biologically active solid matter to said system at a point in advance of said aerobic treatment step for further biological oxidation, separating a third portion of said sludge, effecting non-toxic microbial biolysis of said third portion by subjecting said third portion to a low temperature sufficient to cause freezing, thereby converting the same to biologically inactive material, returning said last material to said aerobic step to constitute food for the remaining active organisms and controlling the ratio between said portions so as to maintain a predetermined balance between the inactivated biodegradable organic matter which constitutes food for said process and the active organisms in said aerobic treatment step such that the inactivated organisms so returned are substantially consumed by the remaining active organisms with a corresponding reduction in sludge content.
8. The method of purifying aqueous waste material containing biodegradable organic matter in a system including an aerobic biological oxidation step wherein a mixed liquor is formed containing purified suspending liquid and biologically active solid matter suspended therein, which comprises separating a sludge containing said biologically active solid matter from said purified suspending liquid whereby said purified suspending liquid constitutes the effluent from the process, removing a portion of said sludge from said system, returning a second portion of said sludge containing biologically active solid matter to said system at a point in advance of said aerobic treatment step for further biological oxidation, separating a third portion of said sludge, effecting non-toxic microbial biolysis of said third portion by subjecting said third portion to a vacuum treatment for converting the same to biologically inactive material, returning said last material to said aerobic step to constitute food for the remaining active organisms and controlling the ratio between said portions so as to maintain a predetermined balance between the inactivated biodegradable organic matter which constitutes food for said process and the active organisms in said aerobic treatment step such that the inactivated organisms so returned are substantially consumed by the remaining active organisms with a corresponding reduction in sludge content.
9. The method set forth in claim 8 in which the vacuum is of the order of 28.5 in. of Hg.
10. The method set forth in claim 9 in which the vacuum treatment is maintained for a period of the order of one minute.
11. The method set forth in claim 8 in which the vacuum treatment is effected by passing the material over a series of trays in an evacuated vessel.
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