Shallow-layer biological filter disc and filtration system composed of filter discs

Abstract

The invention discloses a shallow-layer biological filter disc which comprises a disc body. A separator plate which divides the inside of the disc body into a first section and a second section is arranged across the middle of the disc body. The first section and the second section are distributed side by side and bottoms of the two sections are communicated with each other. The first section is divided into an aerobic layer and a facultative layer. The second section is divided into a filter layer, a denitrification layer and an anaerobic layer. Film-forming packing materials with gradually reduced gaps are distributed in the aerobic layer, the facultative layer, the anaerobic layer and the denitrification layer. A water distribution pipe is also arranged in the aerobic layer. The filter layer is filled with filter cotton. A sidewall of the filter layer is provided with a row of overflow ports. The invention also includes a filtration system which is formed by parallel connection or series connection of the shallow-layer biological filter discs. The system has advantages of short construction cycle, low investment cost, convenience in operation, high treatment efficiency, complete function and flexible and convenient combination. With low energy consumption, pollutants in wastewater can be effectively removed so as to make effluent to be clarified. The filter disc and the filtration system are suitable for processing different qualities and different quantities of wastewater with biodegradability.

Description

technical field [0001] The invention relates to a biological filter disc, in particular to a shallow biological filter disc, and also to a filter system composed of the shallow biological filter disc. Background technique [0002] Biological sewage treatment methods have developed a variety of operating modes, and the technology is very mature. However, all current models are basically unable to fully complete all the process requirements required for sewage biological treatment, and the specific shortcomings are as follows: [0003] [0004] [0005] At present, some enterprises that produce wastewater will have the following problems if they are equipped with the above treatment systems: the required equipment manufacturing requirements are technically difficult and the investment cost is too high; the equipment layout site has high requirements for the site; the operation management requirements and operating costs are relatively High; the above treatment systems a...

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Problems solved by technology

[0005] At present, some enterprises that produce wastewater will have the following problems if they are equipped with the above treatment systems: the required equipment manufacturing requirements are technically difficult and the investment cost is too high; the equipment layout site has high requirements for the site; the operation management requirements and operating costs are relatively High; the above treatment systems belong to customized non-standard equipment, with long construction period and poor response ability in the face of pollution changes

Therefore, many enterprises are currently facing the following problems when supporting environmental protection facilities: expensive equipment purchase, difficult equipment placement, difficult equipment operation and maintenance, and expensive equipment operation difficulties

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