Breeding wastewater treatment device and process

Abstract

The invention discloses an aquaculture wastewater and sewage treatment device, the aquaculture wastewater and sewage treatment device comprises a UASB reactor and a multi-stage continuous short-cut nitrification reactor which are connected through a pipeline, the UASB reactor comprises a primary water distributor and a secondary water distributor which are arranged in the UASB reactor, and a sludge layer and a suspended sludge layer are arranged in the UASB reactor. The primary water distributor is arranged on the sludge layer to guide water flow to the bottom of the sludge layer, the secondary water distributor is arranged on the suspended sludge layer, and a water inlet of the secondary water distributor guides suspended sludge at the top of the suspended sludge layer to flow back to the bottom of the suspended sludge layer and then ejects the suspended sludge. The invention also discloses an aquaculture wastewater treatment process. According to the breeding wastewater treatment device and process disclosed by the invention, collision and friction among granular sludge can be improved through reflux generated by the secondary water distributor in the UASB reactor, the activity of the granular sludge is improved, the granulation speed of suspended sludge is accelerated, the total phosphorus concentration is adjusted, the addition of chemical phosphorus removal agents is reduced, and the energy consumption in the process is reduced.

Description

technical field [0001] The invention relates to the technical field of aquaculture wastewater treatment, in particular to an aquaculture wastewater treatment device and process. Background technique [0002] At present, due to the increasingly high requirements for the treatment of livestock and poultry manure and the increasing control of the country, the treatment of manure for large-scale breeding plants has gradually become the core issue restricting the development of breeding. Traditional manure treatment processes include UASB (Upflow Anaerobic Sludge BlanketExpanded Granular Sludge Bed Upflow Anaerobic Sludge Bed Reactor) / hydrolytic acidification+SBR (sequencing batch reactor activated sludge process) / AAO (Anaerobic Sludge Process) -Anoxic-Oxic anaerobic-anoxic-aerobic method), etc., suitable for discharge requirements in accordance with the "Farmland Irrigation Water Quality Standards" or "Livestock and Poultry Breeding Pollutant Discharge Standards", with the impro...

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Problems solved by technology

Traditional manure treatment processes include UASB (Upflow Anaerobic Sludge BlanketExpanded Granular Sludge Bed Upflow Anaerobic Sludge Bed Reactor) / hydrolytic acidification+SBR (sequencing batch reactor activated sludge process sequenced batch activated sludge process) / AAO (Anaerobic -Anoxic-Oxic anaerobic-anoxic-aerobic method), etc., suitable for discharge requirements in accordance with the "Farmland Irrigation Water Quality Standards" or "Livestock and Poultry Breeding Pollutant Discharge Standards", with the improvement of national ecological environment quality standards , there are new requirements for large-scale aquaculture sewage discharge and sewage limit, the traditional process has been unable to meet the treatment capacity of COD (Chemical Oxygen Demand), total nitrogen and total phosphorus, and there is an urgent need for a Low-cost and high-efficiency treatment devices and processes for advanced treatment to solve these problems

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