Method for fast forming microalgae-aerobic sludge particle commensalism system at high speed in natural light

Abstract

The invention provides a method for fast forming a microalgae-aerobic sludge particle commensalism system at a high speed in natural light. The method is characterized by comprising the following steps of inoculating a reactor with mature aerobic particle sludge; putting the reactor in a position facing the sun; receiving 10 hours or more of natural light illumination every day; using an anaerobic / aerobic / anoxic mode for operation, wherein according to the anaerobic / aerobic / anoxic mode, the water inlet lasts 2 to 10min, the anaerobic treatment time is 100 to 150min, the aerobic treatment timeis 90 to 120min, the anoxic treatment time is 60 to 164min, the sedimentation time is 2 to 10min, the water discharge time is 2 to 10min, the aeration rate of an aerobic section is 270 to 330 mL / min,and the stirring speed is 200 to 300 r / min; thus obtaining the mature microalgae-aerobic sludge particle commensalism system in the 7th day. The method has the advantages that the culture time of themicroalgae-aerobic sludge particles in the prior art is greatly shortened; the sewage purification effect and the anti-impact capability are promoted; the self oxygen generation operation of the commensalism system is realized.

Description

technical field [0001] The invention belongs to the technical fields of biological engineering and environmental engineering, and in particular relates to a method for rapidly forming a microalgae-aerobic sludge particle symbiosis system under natural light. Background technique [0002] In the 21st century, there are two major problems that need to be solved urgently for the sustainable development of human society: environmental pollution and energy crisis. Sewage biological treatment technology has become an important part of the water treatment field due to its low cost and low secondary pollution, and has important engineering application value. Among them, aerobic granular sludge has been widely used in the biological treatment of domestic sewage due to its advantages of large biomass, stable structure, good settling performance, impact load resistance, and high sludge activity. Microalgae has the advantages of short growth cycle and high biological yield. Triacylglyc...

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Problems solved by technology

Microalgae-aerobic sludge particles are used to treat domestic sewage, which can realize energy recovery and utilization on the basis of efficient and stable decontamination, and solve the problems of high energy consumption, low efficiency and large carbon emissions that are common in the current decontamination process problems, and get abundant biomass energy

[0003] The microalgae-aerobic sludge particle symbiosis system has been proven to improve the efficiency of nitrogen and phosphorus removal, but the existing technology for constructing the microalgae-aerobic sludge particle symbiosis system generally exists the microalgae-aerobic sludge particle symbiosis system The start-up period of the reactor is generally long (generally 35-45d). The algae-bacteria granulation process generally requires the help of immobilization technology, such as the adsorption of adsorbents or the embedding of embedding agents. Therefore, how to obtain the symbiotic system of microalgae-aerobic sludge particles quickly and at low cost has become a key to the popularization and application of this technology

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