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A/O-SBBR-oxidation pond-constructed wetland treatment piggery methane fluid system

A technology of artificial wetlands and oxidation ponds, applied in the field of environmental science and engineering, can solve the problems of high operation and management costs, difficult to meet the standards, and unstable treatment effects, etc., and achieve low operating costs, easy debugging and management, and save chemical costs Effect

Inactive Publication Date: 2017-06-20
NANCHANG UNIV
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Problems solved by technology

However, a single treatment process is not easy to meet the standard, and there are problems such as unstable treatment effect and high operation and management costs. At this stage, there is still a lack of economical, reasonable and technologically mature processes to treat this type of wastewater

Method used

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  • A/O-SBBR-oxidation pond-constructed wetland treatment piggery methane fluid system

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Embodiment Construction

[0024] The system of the present invention consists of: before the sequencing batch biofilm reactor (SBBR), a regulating pond, anoxic pond, an aerobic pond, and a secondary sedimentation pond are successively set up; after the SBBR reactor, an oxidation pond is successively established and composed of canna, A three-level artificial wetland composed of reeds, cattails, wild rice stems and other aquatic plants.

[0025] The secondary settling tank and the sequencing batch biofilm reactor are connected with the sludge drying bed, so that the sludge in the two pools is discharged into the sludge drying bed, and the sludge drying bed is connected with the anoxic tank, so that the sludge upper layer The liquid flows to the anoxic pool.

[0026] The processing capacity is 400m 3 / d pig farm biogas slurry, biogas slurry water quality: CODCr 1200~1500mg / L, NH 3 -N 500~630mg / L, TP 20~30mg / L, SS 450~800mg / L. The pig farm biogas slurry enters the adjustment pond after passing through ...

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Abstract

The invention relates to an A / O-SBBR-oxidation pond-constructed wetland treatment piggery methane fluid system. An adjusting pond, an anoxia pond, an aerobic pond and a secondary sedimentation pond are sequentially arranged before a sequencing batch biofilm reactor (SBBR), an oxidization pond and a three-stage constructed wetland comprising canna indica, reed, typha orientalis, cane shoots and other aquatic plant are sequentially constructed behind the SBBR; the system has a stable treatment effect, and is strong in anti-impact load capacity, simple to operate, and low in running cost. The operating mode and time parameters of the SBBR are as follows: water inflow lasts for 1h, aeration lasts for 3.5h, anoxia environment lasts for 2h, aeration lasts for 3.5h, sedimentation lasts for 1h, and drainage lasts for 1h. The effluent index of the piggery methane fluid meets the requirement of pollution discharge standard of livestock and poultry industry (GB 18596-2001) after being treated by the combination technology.

Description

technical field [0001] The invention relates to a combination treatment system of anoxic / aerobic (A / O), sequencing batch biofilm reactor (SBBR), oxidation pond and constructed wetland (CW) for pig farm biogas slurry, which belongs to the field of environmental science and engineering technology . Background technique [0002] In recent years, my country's livestock and poultry breeding industry has developed rapidly, forming a large-scale and intensive development trend. At the same time, a large amount of livestock and poultry manure is produced, and the environmental problems caused by it are becoming increasingly serious. The Bulletin of the First National Survey of Pollution Sources shows that the annual discharge of livestock and poultry farming is 12.6826 million tons of chemical oxygen demand, 1.0248 million tons of total nitrogen, and 160,400 tons of total phosphorus. In addition, it is estimated that in 2020, the national production of livestock and poultry manure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/20
CPCC02F1/001C02F1/66C02F3/1263C02F3/30C02F3/32C02F3/325C02F9/00C02F2001/007C02F2103/20C02F2301/046
Inventor 万金保付煜王建永刘峰
Owner NANCHANG UNIV
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