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Over-flow electrocoagulation device for treating ship/platform domestic sewage

A kind of domestic sewage and flow-through technology, which is applied in natural water treatment, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of cumbersome replacement of electrode components, achieve improved effect and efficiency, easy replacement, The effect of simple structure

Active Publication Date: 2018-05-18
SUNRUI MARINE ENVIRONMENT ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides an over-flow electroflocculation device for treating domestic sewage on ships / platforms, which is used for the treatment of domestic sewage on ships / platforms, and meets the requirements of narrow spaces on ships / platforms, and can better solve the problem of The cumbersome problem of replacing the electrode assembly

Method used

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  • Over-flow electrocoagulation device for treating ship/platform domestic sewage
  • Over-flow electrocoagulation device for treating ship/platform domestic sewage
  • Over-flow electrocoagulation device for treating ship/platform domestic sewage

Examples

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Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: Electrocoagulation technology is used to treat domestic sewage from ships / platforms, and aluminum plates are used as electrode materials with a current density of 0.010A / cm 2 , When the electrocoagulation time is 20 minutes, the salinity is 1%, the distance between the plates is 18mm, and the pH is close to neutral, the COD removal rate can reach 64%;

Embodiment 2

[0042] Example 2: Using electrocoagulation technology to treat N and P in domestic sewage, using aluminum plates as electrode materials, stainless steel plates as cathodes, pH between 6.7 and 9, electrolysis for 30 minutes, and current density of 0.25 to 0.6A / dm 2 , the COD, SS and chroma removal rates were above 70%, 70% and 80% respectively, and the effluent COD reached the secondary sewage discharge standard for urban sewage.

Embodiment 3

[0043] Example 3: Using electrocoagulation technology to treat oil refinery wastewater, using aluminum as electrode material, pH is 7, reaction time is 90 min, and current density is 35 mA / cm 2 , the COD removal rate was 98.9%. Using electrocoagulation to treat waste metal cutting fluid, using aluminum plate as electrode material, pH is 5.0, current density is 60 A / m 2 , and reacted for 25 min, the COD removal rate was 93%.

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Abstract

An overcurrent type electric flocculation device for treating sanitary sewage of ships / platforms comprises a shell, a plurality of positive electrode plates and a plurality of negative electrode plates. The shell is provided with a water inlet and a water outlet. The positive electrode plates and the negative electrode plates are mounted in the shell in a parallel and staggered mode at intervals. The shell is of a closed box structure. The water inlet and the water outlet are arranged at the front upper portion and the top end of the shell respectively. The positive electrode plates and the negative electrode plates are arranged vertically. Two ends of each of the positive electrode plates and the negative electrode plates are fixedly supported by heat-insulating support plates. A separation block is arranged at each of two ends of the support plate at the top end. A separation block is arranged at one end, adjacent to the reverse side of the shell 1, of the support plate at the bottom end. Spaces are reversed between the upper and lower ends of the electrode plates and the top and bottom sides of the shell to serve as water flow channels. The positive electrode plates and the negative electrode plates are connected with two electrodes of a direct-current power source through conductive rod components respectively. A sewage discharge outlet is arranged at the bottom end of the shell. The overcurrent type electric flocculation device has the advantages of simple structure, nonexistence of pollution, small occupied space, convenience in automatic control, easiness in replacement and the like.

Description

technical field [0001] The invention relates to an over-flow electroflocculation device for treating domestic sewage from ships / platforms, which can also be used in the fields of electroplating, chemical industry, printing and dyeing, pharmaceutical, tanning, papermaking and other industrial wastewater treatment and water supply purification. Background technique [0002] The common treatment methods for domestic sewage on ships / platforms are divided into three types: physicochemical method, biochemical method, and electrochemical method. Physicochemical method is less efficient and less used. Municipal domestic sewage treatment usually adopts biochemical methods, but it faces many difficulties when it is applied to ship domestic sewage treatment: (1) It takes a long time for professionals to cultivate domesticated bacteria; (2) The treatment capacity is poor when the sewage load changes greatly; (3) The device Larger volume; (4) Activated sludge is easy to cause stench and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/463
CPCC02F1/46104C02F1/463C02F2103/008
Inventor 李洋温佳京刘波杨民生
Owner SUNRUI MARINE ENVIRONMENT ENG