Wastewater treatment method capable of realizing high-efficient completely coupled autotrophic nitrogen removal

A technology for autotrophic denitrification and wastewater treatment, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of long treatment process and incomplete removal of total nitrogen, and achieve The effect of improving the total nitrogen removal rate and stabilizing the total nitrogen removal rate

Inactive Publication Date: 2017-11-21
福建省凌安环保科技有限公司
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Problems solved by technology

[0003] The purpose of the present invention is to provide a high-efficiency whole-process coupled autotrophic denitrification wastewater treatment method, which solves the problems of long treatment process in the existing process and incomplete removal of total nitrogen under the condition of insufficient carbon source.

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  • Wastewater treatment method capable of realizing high-efficient completely coupled autotrophic nitrogen removal

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Embodiment example 1

[0017] Implementation case 1: Mix the successfully domesticated anaerobic ammonium oxidation granular sludge and short-course nitrification sludge at a ratio of 3:5 to the dry weight of the sludge, and inoculate them into the SBR reactor, and the sludge in the reactor after inoculation The concentration is about 6000mg / L. The SBR reactor is made of plexiglass, the upper part is a cylinder, the bottom is a cone, the height is 400 mm, the diameter is 150 mm, and the effective volume is 4 L. The temperature in the reactor is normal temperature, and the aeration rate is controlled by a rotameter. The test water filling ratio is 1:2, and each operation cycle consists of 4 processes of water inflow, reaction, precipitation and drainage. When it is continuously higher than 1.5mg / L, the reaction will stop. After 30 days of commissioning and operation, the effluent ammonia nitrogen is stable within 5mg / L, and the removal rate of total nitrogen volume load reaches 0.3kgN / (m 3 d), the...

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Abstract

The invention discloses a wastewater treatment method that combines a novel high-efficiency full-range coupling with autotrophic denitrification. Aiming at the incomplete removal of total nitrogen caused by the relatively insufficient carbon source of ammonia-nitrogen wastewater in the current traditional biological denitrification process, the domesticated short-range nitrification and anammox sludge were inoculated in the SBR reactor at a ratio of 3:5 to Ammonia nitrogen wastewater with a concentration of about 200~900mg/L is the test influent, and the commissioning operation is carried out under the condition of not adding organic carbon source. After the system was running stably, elemental sulfur was added, and after 15 days of domestication, sulfur autotrophic denitrification was successfully coupled to the system, and the total nitrogen removal rate was stable above 99%. The invention has the beneficial effects of utilizing the coupling action of short-range nitrification, anaerobic ammonium oxidation and sulfur autotrophic denitrification to realize the standard-reaching treatment of total nitrogen in a single reactor under the condition of no organic carbon source.

Description

technical field [0001] The invention belongs to the technical field of waste water biological treatment, and relates to a waste water treatment method with high efficiency and whole-process coupled autotrophic denitrification. technical background [0002] At present, the problem of eutrophication in rivers and reservoirs is serious. The treatment of ammonia nitrogen in sewage plants can no longer meet the requirements. It is urgent to put forward the requirements for the removal of total nitrogen. The traditional biological denitrification process is mainly based on nitrification-denitrification. In the nitrification stage, there are generally problems of insufficient organic carbon source and low removal rate of total nitrogen. Under the condition of no external organic carbon source, for industrial wastewater with high concentration of ammonia nitrogen, it is impossible to achieve the standard treatment of total nitrogen. The anaerobic ammonium oxidation process is one o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F101/16
CPCC02F3/302C02F2101/16
Inventor 黄盛发吴煌州陈伟平苏美萍
Owner 福建省凌安环保科技有限公司
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