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Integrated processing device of aquatic product unfreezing wastewater and application thereof

A technology for aquatic products and wastewater, applied in the field of thawing wastewater treatment, integrated wastewater treatment devices, and integrated treatment of aquatic product thawing wastewater devices, can solve the problems of high cod and high salinity of saline wastewater, and achieve the Small area effect

Active Publication Date: 2014-02-19
OCEAN RES CENT OF ZHOUSHAN ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When dealing with this kind of high-salinity wastewater, because the saline wastewater usually has the characteristics of high salinity and high cod, it is difficult to use ordinary microorganisms to treat it.

Method used

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  • Integrated processing device of aquatic product unfreezing wastewater and application thereof
  • Integrated processing device of aquatic product unfreezing wastewater and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] see figure 1 , an integrated device for treating thawed wastewater from aquatic products, consisting of a water inlet 1, a grille 2, a sedimentation tank 3, a water outlet 4, a pipeline 5, a sewage tank 6, a sludge pipeline 7, a membrane device 8, and a micro-aeration device 9. Composed of a sludge pump 10, an aeration pipeline 11, an aeration pump 12, a water pump 13, an outlet pool 14, and a second pipeline 15. The water inlet 1 is located above the sedimentation tank 3, the grille 2 is located behind the water inlet 1, the sedimentation tank 3 is connected to the sewage tank 6 through the first pipeline 5, the bottom of the sedimentation tank 3 is a triangular design, and the sewage tank 6 is equipped with a membrane device 8 , the bottom of the membrane device 8 is provided with a micro-aeration device 9, the membrane device 8 is connected to the water pump 13 through the second pipeline 15, the water pump 13 is connected to the second pipeline 15, and the second pi...

Embodiment 2

[0014] An aquatic product enterprise in the coastal area of ​​the East China Sea uses 150 tons of seawater per day. After a large amount of seawater is used for thawing, the waste water produced is difficult to pass. The thawed water is applied to the device of the present invention (see figure 1 ), the flow size is 15 tons per hour, wherein the sedimentation tank 3 has a volume of 50 cubic meters, the sewage tank 6 is 200 cubic meters, and the outlet pool 14 has a volume of 50 cubic meters. The molecular weight cut-off of the membrane is 30,000 Daltons. After operation, the chroma and suspended solids of the effluent all meet the national discharge requirements, and the COD removal rate is over 50%. See Table 1 for the results.

[0015]

Embodiment 3

[0017] An aquatic product enterprise in the coastal area of ​​the East China Sea uses 100 tons of seawater per day. After a large amount of seawater is used for thawing, the waste water produced is difficult to pass. The water quality of former thawed water is referring to Table 2, and this thawed water is applied to the device of the present invention to process (see figure 1 ), the flow rate is 15 tons per hour, among which the sedimentation tank 3 has a volume of 30 cubic meters, the sewage tank 6 has a volume of 150 cubic meters, and the outlet pool 14 has a volume of 30 cubic meters. The membrane molecular weight cut-off of the membrane equipment is 3,000 Daltons, and the COD, chroma, and suspended solids of the effluent after the operation of the device all meet the national secondary standard for sewage discharge. See Table 2.

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Abstract

The invention aims to provide an integrated processing device of aquatic product unfreezing wastewater, and the integrated processing device comprises a water inlet, a grille, a sedimentation tank, a water outlet, a pipeline, a sewage tank, a sludge pipeline, a membrane unit, a micro aeration unit, a sludge pump, an aeration pipeline, an aeration pump, a water pump, a water outlet pool and a second pipeline. The device adopts a special PVDF (polyvinylidene fluoride) ultrafiltration membrane as a core and an immersion-type operation mode, and combines a micro aeration technology for purification processing, more than 99% of suspended particle matters and microorganisms in water can be removed, meanwhile micro pollution mediums in seawater can be removed, and seawater post-processing chromaticity and suspended solids both can meet discharge requirements. The device combines microbial biochemical processing and membrane processing requirements, is reasonable in design, small in land occupation area and large in processing capacity, and can be used in processing of the aquatic product unfreezing wastewater.

Description

technical field [0001] The invention belongs to environmental engineering and relates to a device for integrated wastewater treatment, in particular to a device for integrated treatment of thawed wastewater from aquatic products, which is suitable for the treatment of wastewater from aquatic products, especially for the treatment of thawed wastewater. technical background [0002] Due to its special properties, high-salt wastewater has always been a difficult problem in sewage treatment. This type of wastewater includes high-salt domestic wastewater and high-salt industrial wastewater. Its main source has two aspects, one is seawater substitution, that is to say, seawater is directly used for industrial production and domestic water to form sewage. The wastewater produced after thawing and cleaning seawater has the characteristics of "three highs and one low", that is, high cod, high salinity, high ammonia nitrogen, and low temperature. When dealing with such high-salinity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02
Inventor 郑刚杨志坚李静静泮红文
Owner OCEAN RES CENT OF ZHOUSHAN ZHEJIANG UNIV
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