Comprehensive treating method and treating system for industrial aquatic cultivation sewage

A technology for comprehensive treatment and aquaculture, applied in the field of comprehensive treatment methods and treatment systems for industrialized aquaculture wastewater, can solve problems such as high cost, difficult management, complicated wastewater treatment systems, etc. Effect

Inactive Publication Date: 2007-03-07
ZHEJIANG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve technical problems such as the complexity of the wastewater treatment system in industrialized aquaculture, high cost, and difficult management, the purpose of the present invention is to provide a comprehensive treatment method and treatment system for industrialized aquaculture wastewater, using a simple inclined plate settler , mechanical filter, biological filter with nitrifying bacteria as the medium and plant filter with hydroponic grass plants as the medium to comprehensively treat industrial aquaculture wastewater by a mechanical-bacteria-grass integrated system

Method used

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  • Comprehensive treating method and treating system for industrial aquatic cultivation sewage
  • Comprehensive treating method and treating system for industrial aquatic cultivation sewage
  • Comprehensive treating method and treating system for industrial aquatic cultivation sewage

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[0036]As shown in Figure 1, Figure 2, and Figure 3, the waste water is input into the treatment system through the pump controlled by the relay, and the inclined plate settler 1 and the mechanical filter 2 are concentrated in a 1200×900×1000mm (length×width×height) treatment pool , the inflow baffle plate 5 of the inclined plate settler 1 is 500 mm high, and the top is flush with the top of the treatment tank. The inclined plate 6 has a length of 390 mm and an inclined angle of 45°. A total of 10 inclined plates form a 9-layer channel, and the distance between adjacent inclined plates is 40 mm. The top of the inclined plate is 220mm away from the top of the treatment tank. The bottom of the inclined plate settler 1 is inclined on three sides to facilitate the concentration and discharge of sediment. The depth of the lowest point is 1000mm, and the height difference of the slope is 300mm. The bottom surface of the mechanical filter 2 is flush with the highest point of the bottom...

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Abstract

The present invention discloses comprehensive treating method and system for industrial aquatic cultivation sewage. The sewage containing rich excrement, ammonia and other metabolic product as well as feed residue from the bottom of the industrial cultivation pond is treated successively through deposition of large grain excrement and feed residue in the inclined plate depositor, interception of other excrement and feed residue in the mechanical filter, and conversion of ammonia into nitrate with nitrifying bacteria in the biological filter. The treated sewage is returned to the cultivation pond circularly while the deposited, intercepted and flocculated matters are delivered to the plant filter with aquatic grass plant as medium. The mechanical filter is back flushed regularly.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a comprehensive treatment method and a treatment system for industrial aquaculture wastewater. Background technique [0002] Aquaculture is an important part of agricultural production. With the support of modern technology, aquaculture is expected to become the second largest food industry after planting. The development of aquaculture is constrained by many factors. Aquaculture is mainly composed of the regulation of the water environment. Sufficient and satisfactory water sources are essential for various aquaculture. Water quality affects the reproduction, growth and even survival of cultured organisms. At present, the shortage of water resources and water pollution have become common political, social, economic and important scientific and technological issues faced by many countries and regions. For developing countries, the situation is even more severe. my country has be...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/52C02F3/02C02F3/32
CPCY02W10/10
Inventor 泮进明
Owner ZHEJIANG UNIV
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