Device and method for realizing autotrophic nitrogen removal and synchronous phosphorus recovery of domestic sewage by using granular sludge with hydroxyapatite as crystal nucleus

A technology for hydroxyapatite and domestic sewage, applied in water/sludge/sewage treatment, biological treatment equipment, biological water/sewage treatment, etc., can solve problems such as increased mining costs, achieve simple equipment, save additional carbon sources And aeration, operability strong effect

Active Publication Date: 2021-09-21
BEIJING UNIV OF TECH
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Problems solved by technology

The available phosphorus mainly comes from natural phosphate rock, which will be exhausted in the near future, the quality of the remaining phosphate rock will gradually decline, and the mining cost will increase

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  • Device and method for realizing autotrophic nitrogen removal and synchronous phosphorus recovery of domestic sewage by using granular sludge with hydroxyapatite as crystal nucleus

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Embodiment Construction

[0023] The scheme of the present invention will be described in detail in conjunction with the drawings and implementation examples.

[0024] A device for realizing autotrophic denitrification and simultaneous phosphorus recovery of domestic sewage from granular sludge with hydroxyapatite as the crystal nucleus, which is characterized in that it includes a water inlet tank (1), a peristaltic pump (2), an air pump (3), and a rotameter (3-1), aeration tray (3-2), short-range denitrification coupled anammox reactor (4), stirring device (4-1), water inlet (4-2), water outlet (4- 3), mud inlet (4-4), mud outlet (4-5), dosing box (4-6), dosing pump (4-7), heating rod (4-8), temperature controller (4-9), WTW host (5), dissolved oxygen monitoring probe (5-1), pH monitoring probe (5-2), side treatment reactor (6), magnetic stirrer (6-1), side Side treatment device inlet pump (6-2), side treatment device outlet pump (6-3), intermediate water tank (6-4), peristaltic pump (6-5), outlet w...

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Abstract

The invention discloses a device and method for realizing autotrophic nitrogen removal and synchronous phosphorus recovery of domestic sewage by using granular sludge with hydroxyapatite as a crystal nucleus, and belongs to the field of sewage treatment. The device comprises a short-cut denitrification coupling anaerobic ammonia oxidation reactor and a side granular sludge treatment reactor. CaCl2 and phosphate are added into the side treatment reactor, hydroxyapatite is formed to promote conversion of anaerobic ammonia oxidation sludge from floc to granular sludge, and after culture for a certain period of time, the sludge is obviously granulated, so that the settling performance of the sludge is improved, retention and high enrichment of anaerobic ammonia oxidation bacteria are facilitated, and therefore, the denitrification contribution rate is improved, and the energy consumption is reduced. Meanwhile, the content of phosphate in the sludge is increased to 20% or above, and recycling of important resource phosphorus can be achieved through regular sludge discharging.

Description

technical field [0001] The invention relates to a technique for realizing autotrophic denitrification and simultaneous phosphorus recovery of domestic sewage with granular sludge using hydroxyapatite as a crystal nucleus, and belongs to the field of sewage biological treatment. Background technique [0002] The problem of water environment pollution is an important factor affecting the development of society and economy and the improvement of people's living standards. Among them, the problem of eutrophication caused by excessive nitrogen and phosphorus has not only not been solved, but also has an increasingly serious trend. Therefore, nitrogen and phosphorus removal It has become a major topic in the field of sewage treatment today. With the rapid development of today's society and the global attention to environmental issues, although the amount of sewage treatment continues to increase, the pollutant discharge standards are becoming increasingly stringent, and traditiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F101/16C02F101/10
CPCC02F3/307C02F3/308C02F2103/002C02F2209/02C02F2209/22C02F2305/06C02F2209/06C02F2209/18C02F2101/16C02F2101/166C02F2101/105C02F2209/44C02F2203/006Y02W10/10
Inventor 彭永臻考成坤李健伟李夕耀邓丽艳
Owner BEIJING UNIV OF TECH
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