System and method for purifying aquaculture wastewater

A technology for aquaculture wastewater and wastewater treatment, which is applied in chemical instruments and methods, animal husbandry wastewater treatment, water aeration, etc. It can solve the problems of small processing capacity, high operation and maintenance costs, and poor impact resistance of the system.

Inactive Publication Date: 2020-10-13
INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The above-mentioned device is mainly for biochemical treatment of aquaculture wastewater, but the treatment capacity is small, the system has poor impact resistance, is eas

Method used

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  • System and method for purifying aquaculture wastewater
  • System and method for purifying aquaculture wastewater
  • System and method for purifying aquaculture wastewater

Examples

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Embodiment 1

[0056] Taking the "Tianfu Agriculture Co., Ltd." Luodai black pig farm (with 5,000 live pigs) located in Jinjing Town, Changsha County, Hunan Province as a demonstration base (10km away from the Changsha Agricultural Environment Station), the solid-liquid separation and biogas engineering basis, in accordance with image 3 The process flow shown is to purify the aquaculture wastewater discharged after the solid-liquid separation of the original farm waste and the biogas digester treatment:

[0057] After the aquaculture wastewater is settled in the sedimentation tank, it is transported to the aeration tank (30m 2 ), carry out oxygenation, obtain DO value 2.06 oxygen-containing culture waste water; The flow rate of described culture waste water is 31.25L / min; The bottom of described aeration tank is laid with PVC porous pipe, and the aperture of described PVC porous pipe is 4mm, and the hole distance is 20cm, and the aeration fan is used to charge oxygen into the PVC porous pi...

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Abstract

The invention relates to the technical field of wastewater treatment, in particular to a system and a method for purifying breeding wastewater. The invention provides a system for purifying aquaculture wastewater, which comprises an aeration tank, a front-end regulation and biological matrix treatment tank, a three-stage myriophyllum elatinoides constructed wetland and a subsurface infiltration deep treatment tank which are communicated in sequence. The aeration tank is used for improving the dissolved oxygen content of the aquaculture wastewater, so that sufficient oxygen is provided for aerobic microorganisms in the front-end regulation and biological matrix treatment tank; then, nitrogen and phosphorus are adsorbed and degraded through front-end adjustment and a biological matrix treatment pond, meanwhile, substances harmful to growth of myriophyllum elatinoides are intercepted, and normal growth of myriophyllum elatinoides is guaranteed; in the myriophyllum elatinoides constructedwetland, myriophyllum elatinoides is used for absorbing nitrogen and phosphorus in wastewater and adsorbing and enriching heavy metals and toxic and harmful substances at the same time; finally, residual pollutants are treated by the underflow percolation deep treatment tank to obtain effluent meeting the emission standard.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a system and method for purifying aquaculture wastewater. Background technique [0002] Breeding is an important part of my country's agriculture and rural economy. Intensive livestock and poultry breeding has important practical significance in increasing farmers' income and promoting rural economic development. However, the wastewater discharged from large-scale farms is large and concentrated every day, and contains high pollutants such as total nitrogen, total phosphorus, ammonia nitrogen, and nitrate nitrogen, as well as a large amount of suspended solids. If it is discharged directly without treatment, it will pollute the surface water, soil and groundwater, thereby affecting the safety of drinking water in rural areas, and even endangering the health of residents. [0003] Chinese patent CN201920395888.1 discloses a biological reaction system for microalgae t...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/10C02F101/16C02F101/20C02F101/30C02F101/38C02F103/20
CPCC02F9/00C02F7/00C02F2001/007C02F3/32C02F3/34C02F1/001C02F2101/20C02F2101/16C02F2101/105C02F2101/30C02F2101/38C02F2103/20
Inventor 文炯彭英湘刘锋李中希许望龙胡廉成付岳峰
Owner INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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