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Mariculture wastewater treatment system and treatment method

A wastewater treatment system and a technology for marine aquaculture, applied in water/sewage treatment, biological water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problems of unfavorable nitrifying bacteria and denitrifying bacteria culture and domestication, and low denitrification efficiency. , to achieve the effect of improving the transparency of the effluent, low cost, and solving the purification and discharge

Active Publication Date: 2016-12-07
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, there are few cases of using it to treat mariculture wastewater. On the one hand, the high salinity of the water body is not conducive to the cultivation and domestication of nitrifying bacteria and denitrifying bacteria. Nitrogen is not efficient

Method used

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  • Mariculture wastewater treatment system and treatment method

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Embodiment

[0032] A kind of mariculture wastewater treatment system, such as figure 1 , figure 2 As shown, it includes a connected inclined plate sedimentation tank 2 and a three-stage denitrification and phosphorus removal pond, and the three-stage denitrification and phosphorus removal pond includes a water distribution area 3, an anoxic section (section A), and an aerobic section (section A) arranged in sequence. O section), phosphorus removal section and catchment area 8, the anoxic section is filled with gravel matrix 4, the aerobic section is filled with zeolite matrix 5, and perforated aeration tubes 6 are set, the phosphorus removal section is filled with phosphorus removal functional filler matrix 7, inclined plate The bottom of the sedimentation tank 2 is provided with a water inlet pipeline 1, the top of the inclined plate sedimentation tank 2 is connected with the water distribution area 3, and the water collection area 8 is provided with an outlet pipeline 9. A return pipe...

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Abstract

The invention relates to a mariculture wastewater treatment system and treatment method. The mariculture wastewater treatment system comprises a slanting board sedimentation pool and a three-section nitrogen and phosphorus removal pool which communicate with each other, wherein the three-zone nitrogen and phosphorus removal pool comprises a water distribution area, an anoxic zone, an aerobic zone, a phosphorous removal zone and a water collection area which are arranged in sequence, the anoxic zone is filled with gravel substrates, the aerobic zone is filled with zeolite substrates and equipped with a perforated aerator pipe, the phosphorous removal zone is filled with phosphorous removal functional filler substrates, a water inlet pipeline is arranged at the bottom end of the slanting board sedimentation pool, the top end of the slanting board sedimentation pool communicates with the water distribution area, the water collection area is equipped with a water outlet pipeline, and a return pipeline is arranged between the water collection area and the water distribution area, so that part of treated water is conveyed back to the water distribution area through the return pipeline. Compared with the prior art, the turbidity and the content of soluble COD, nitrogen and phosphorus in water can be reduced simultaneously, an A / O biological contact oxidation technology and an adsorption phosphorous removal technology are combined creatively to be applied to the field of seawater treatment, and the problem about large-scale purified emission of mariculture wastewater is solved.

Description

technical field [0001] The invention belongs to the field of mariculture wastewater treatment, and in particular relates to a mariculture wastewater treatment system and treatment method. Background technique [0002] According to the "China Fishery Statistical Yearbook 2014", in 2014, the polluted aquaculture area of ​​my country's fishery reached 29,607 hectares, causing a loss of 99,000 tons of aquatic products, about 1.32 billion yuan; tons, about 4.07 billion yuan. Among them, some fishery diseases are caused by self-pollution. It can be seen that in the field of seawater aquaculture, the amount of sewage that needs to be treated every year is very huge. [0003] Compared with domestic sewage and industrial wastewater, the main pollutants of mariculture wastewater are nutrients (nitrogen and phosphorus), and the concentration is relatively low. At the same time, there are a certain amount of suspended solids and dissolved organic matter, which affects the transparency ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/28
CPCC02F1/28C02F1/281C02F1/283C02F3/302C02F9/00C02F2001/007
Inventor 费翔何圣兵张晓一戴谨微陈旦玥
Owner SHANGHAI JIAO TONG UNIV
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