Method for fast aerobic granulation of flocculent sludge in sequence batch reactor
A sequencing batch reactor and flocculent sludge technology, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc. Efficiency affects issues such as effluent discharge outlets, and achieves the effects of stable granular sludge form, reduced operating costs, and improved operating efficiency and treatment capacity.
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Embodiment 1
[0025] A method for rapid aerobic granulation of flocculent sludge in a sequencing batch reactor, characterized by the following features:
[0026] 1) Reactor and medium. The reactor is in the shape of a barrel, with an effective volume of 20 liters and a height-to-diameter ratio of 4:1. The flocculent sludge is inoculated with conventional sewage secondary biological treatment activated sludge, and the sludge concentration is controlled at 2000mg. / L; urban sewage is used as influent water, and water quality testing is carried out according to the national standard method stipulated in "Water and Wastewater Monitoring and Analysis Methods (Fourth Edition)" compiled by the State Environmental Protection Administration and published by China Environmental Science Press, and the concentration is calculated by COD 150-250mg / L, ammonia nitrogen 20-30mg / L, total nitrogen 25-35mg / L, total phosphorus 2-5mg / L.
[0027] 2) Operation mode, the above-mentioned sequencing batch reactor ad...
Embodiment 2
[0033] A method for rapid aerobic granulation of flocculent sludge in a sequencing batch reactor, characterized by the following features:
[0034] 1) Reactor and medium. The reactor is in the shape of a barrel, with an effective volume of 8 liters and a height-to-diameter ratio of 8:1. The flocculent sludge is inoculated with conventional sewage secondary biological treatment activated sludge, and the sludge concentration is controlled at 3000mg. / L; using the effluent of the primary sedimentation tank of a certain urban sewage treatment plant as the influent water, according to the national standard method stipulated in "Water and Wastewater Monitoring and Analysis Methods (Fourth Edition)" compiled by the State Environmental Protection Administration and published by China Environmental Science Press Water quality test, COD concentration is 150-200mg / L, ammonia nitrogen 20-30mg / L, total nitrogen 25-40mg / L, total phosphorus 1-3mg / L.
[0035] 2) Operation mode, the above-ment...
Embodiment 3
[0042] A method for rapid aerobic granulation of flocculent sludge in a sequencing batch reactor, characterized by the following features:
[0043] 1) Reactor and medium. The reactor is in the shape of a barrel, with an effective volume of 10 liters and a height-to-diameter ratio of 2.5:1. The flocculent sludge is inoculated with conventional sewage secondary biological treatment activated sludge, and the sludge concentration is controlled at 5000mg. / L; urban sewage is used as influent water, and water quality testing is carried out according to the national standard method stipulated in "Water and Wastewater Monitoring and Analysis Methods (Fourth Edition)" compiled by the State Environmental Protection Administration and published by China Environmental Science Press, and the concentration is calculated by COD 150-300mg / L, ammonia nitrogen 30-35mg / L, total nitrogen 40mg / L, total phosphorus 2-4mg / L.
[0044] 2) Operation mode, the above-mentioned sequencing batch reactor is ...
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