BioDopp biochemical reaction system for enhancing biological phosphorus removal and sewage treatment method
A sewage treatment method and biochemical reaction technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc.
Active Publication Date: 2022-06-10
BEIJING BOHUITE ENVIRONMENTAL TECH CO LTD
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Problems solved by technology
Relevant practice results have found that the previous BioDopp biochemical reactor has obvious advantages in carbon and nitrogen removal, but the effect of biological phosphorus removal is not very satisfactory, and the conditions for anaerobic phosphorus release reaction are still in doubt. There are great difficulties in absorbing and removing phosphorus
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[0044] The water inlet end of the second flow channel 118 is connected to the bottom of the second return channel 116, and another part of the denitrification sludge mixture in the first flow channel 114 can be passed into the aerobic zone 120 for aerobic phosphorus uptake. reaction, aerobic carbon removal and nitrification reaction to obtain a nitrification sludge mixture, so as to separate the nitrification sludge.
[0045] In a third example, see Figure 5 to Figure 6 The difference between the third embodiment and the second embodiment is that the number of aerobic zones 120 is multiple, and the flow splitting structure of the reflux device 117 and the air stripping device 119 is the same, which will not be described here.
[0046] In a fourth example, see Figure 7 to Figure 8 Compared with the first three embodiments, the head end and the end of the anaerobic area 100 are reversed, and the head end of the anaerobic area 100 and the first outflow hole 112 are respectivel...
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Abstract
The invention relates to the technical field of sewage biochemical treatment, and provides a BioDopp biochemical reaction system for enhancing biological phosphorus removal and a sewage treatment method.The BioDopp biochemical reaction system for enhancing biological phosphorus removal comprises at least one anaerobic zone, at least one anoxic zone, at least one aerobic zone and a settling zone; under the condition that electron acceptors such as dissolved oxygen or nitrate nitrogen basically do not exist in the anaerobic zone, a high-quality carbon source is stored in the body in the form of PHA or PHB by phosphorus removal bacteria (PAOs), and is used for denitrification reaction after entering the anoxic zone, so that denitrification phosphorus removal can be realized; other carbon sources which cannot be utilized by the anaerobic phosphorus release reaction in the sewage enter the anoxic zone along with the mixed solution to carry out denitrification nitrogen removal reaction, and the carbon sources which cannot be utilized by the denitrification nitrogen removal reaction enter the aerobic zone along with the mixed solution to be removed; part of phosphorus removal bacteria (PAOs) with PHA or PHB stored in bodies can enter a subsequent aerobic zone to perform aerobic phosphorus uptake reaction even if the PAOs do not generate denitrifying phosphorus removal reaction due to other reasons, so that the biological phosphorus removal function is further enhanced.
Description
technical field [0001] The invention relates to the technical field of sewage biochemical treatment, in particular to a BioDopp biochemical reaction system and a sewage treatment method for enhancing biological phosphorus removal. Background technique [0002] BioDopp (biological doubling) sewage treatment process has been promoted in my country's sewage biochemical treatment market for more than 20 years, and many of its inherent biochemical technology concepts have gradually been accepted by everyone during the promotion process, such as integrated pool type, built-in mud-water separation unit; High sludge concentration, usually controlled at 5~8g / L; low dissolved oxygen control, dissolved oxygen at the end of the aerobic zone is 0.3~0.8mg / L; air lift backflow, using air lift method to realize nitrification liquid backflow or sludge backflow; High reflux ratio technology, relying on the integrated pool type and air lift reflux method to greatly reduce the reflux cost and ach...
Claims
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IPC IPC(8): C02F3/30
CPCC02F3/303C02F3/305C02F3/308
Inventor 潘建通迟金宝陈凯华黄文涛张雷杨平朱大明朱琳琳徐钊门坤阔
Owner BEIJING BOHUITE ENVIRONMENTAL TECH CO LTD