Sewage denitrification system
A technology for denitrification and sewage, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve the problems of difficult start-up and poor stability of the anaerobic ammonia oxidation system, and achieve reproducibility Strong, fast start-up, and simple system process
Active Publication Date: 2021-06-18
TSINGHUA UNIV
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[0011] The purpose of the present invention is to propose a sewage denitrification system to solve the problems of difficult start-up and poor stability of the anaerobic ammonium oxidation system in the prior art
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[0024] A kind of sewage denitrification system that the present invention proposes, its flow diagram is as follows figure 1 shown, including:
[0025] Strain continuous supply unit (I), used for continuous supply of anammox strain;
[0026] The intermediate water quality adjustment unit (II) is used to receive the effluent of the strain continuous supply unit (I) and regulate the water quality;
[0027] The biofilm unit (III) is used to use the water stored in the intermediate water quality adjustment unit (II) as influent water to maintain the operation parameters adapted to the target functional microorganisms;
[0028] The strain continuous supply unit (I), the intermediate water quality adjustment unit (II) and the biofilm unit (III) are connected in series in sequence.
[0029] In the sewage denitrification system of the present invention, the effect of the continuous supply unit (1) of the bacteria is to continuously supply the anammox bacteria, including the water inl...
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The invention belongs to the field of biological denitrification of sewage, and particularly relates to a sewage denitrification system. The system comprises a continuous strain supply unit, an intermediate water quality regulation and control unit and a biological membrane unit. The three units are sequentially connected in series. The continuous strain supply unit is used for generating strains, and the intermediate water quality regulation and control unit is used for regulating and controlling water quality to meet the growth requirements of target functional microorganisms of the biological membrane unit, and the biological membrane unit is used for maintaining operation of operation parameters adapting to the target functional microorganisms. According to the system disclosed by the invention, based on the characteristic of attachment, aggregation and growth of anammox microorganisms, strains lost by a mature anammox process are taken as a bacterial source of a new process, an environment for attachment and growth of the strains is provided in the new process, functional strains with relatively high abundance can be continuously supplied for a long period on the premise of not influencing the operation stability of the bacterial source process, and rapid starting and efficient and stable operation of the new process are ensured. The system is simple in process, convenient to operate and maintain, short in starting period, high in process stability after starting and high in replicability.
Description
technical field [0001] The invention relates to the field of sewage biological denitrification, in particular to a sewage denitrification system. Background technique [0002] Anaerobic ammonia oxidation refers to the biological denitrification process of converting ammonia nitrogen into nitrogen gas without the participation of carbon source and oxygen, using nitrous as electron acceptor. This type of technology realizes denitrification in an ultra-short process, which is economical, environmentally friendly, and easy to manage. [0003] Anammox microorganisms are chemoautotrophic anaerobic bacteria with a long generation cycle (5-3 days), low abundance in conventional water treatment systems, difficult in-situ enrichment, and easy enrichment of the enriched strains. With the water loss, the system stability is poor. Therefore, the difficulty in starting, the easy loss of strains and the poor stability of the anaerobic ammonium oxidation technology have hindered the popul...
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IPC IPC(8): C02F3/30C02F101/16
CPCC02F3/307C02F2101/166C02F2203/006Y02W10/10
Inventor 王凯军马金元
Owner TSINGHUA UNIV