Activated sludge and microalgae coupled granular system for waste water treatment and establishment and operation method thereof

A wastewater treatment and activated sludge technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the difficulties in the development and selection of carrier materials, weak penetrability, and immobilization Problems such as high cost of system use, to achieve the promotion effect and impact resistance, increase the calorific value and oil content, and promote the effect of resource utilization
CN105174476AActive Publication Date: 2015-12-23INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
Publication Date
2015-12-23

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Abstract

The invention discloses an activated sludge and microalgae coupled granular system for waste water treatment and an establishment and operation method thereof. The activated sludge and microalgae coupled granular system is established for purifying sewage and recycling energy. The system comprises microalgae and a granule sludge carrier thereof. The settling time at the culture stage is controlled to range from 1 min to 100 min, and the drainage ratio of a reactor at the culture stage is controlled to range from 10% to 90%. Shear force formed through aeration or stirring is controlled to range from 0.1 cm / s to 2 cm / s, settling time at the actual waste water treatment stage is controlled to range from 0.5 min to 30 min, the drainage ratio at the actual waste water treatment stage is controlled to range from 10% to 90%, and shear force formed through aeration or stirring is controlled to range from 0.1 cm / s to 3 cm / s. The system can treat various kinds of waste water, and remaining sludge can serve as raw materials for preparation of biodiesel and biogasoline, hydrogen production by fermentation and methane production by fermentation, and preparation of bio-organic fertilizer, biochar and the like.
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Description

technical field

[0001] The invention relates to a sewage treatment system, in particular to an activated sludge and microalgae coupled granulation system for wastewater treatment and a construction and operation method thereof. 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. Water resource pollution is the main component of environmental pollution. With the continuous increase in population and the acceleration of urbanization, coupled with the comprehensive influence of technological level, short-term interests, and imperfect legal system, water resource pollution has become a problem in recent years. How to remove excess nitrogen, phosphorus and other pollutants in water efficiently and at low cost is an important problem in water pollution control. At the same time, the survey pointed out that the global oil and natu...

Claims

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