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System and method for treating sewage at zero energy consumption by using ecological filter bed

A technology of sewage treatment system and filter bed, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of improper sludge suction treatment and disposal, operation and maintenance level It can achieve the effect of good water quality, low operating cost and less surface area.

Inactive Publication Date: 2013-06-19
恒蓝水务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the sewage treatment in big cities, the main problems faced by the sewage treatment in scattered residential areas are: (1) the equipment is not running smoothly, and the water output is difficult to meet the standard; (2) relatively expensive construction costs; (3) compared with rural living standards , high operating costs; (4) Lack of special personnel on duty, low level of operation and maintenance; (5) Improper sludge suction treatment and disposal

Method used

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  • System and method for treating sewage at zero energy consumption by using ecological filter bed
  • System and method for treating sewage at zero energy consumption by using ecological filter bed

Examples

Experimental program
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Effect test

Embodiment 1

[0043] The ecological filter bed is as follows from bottom to top:

[0044] The anti-seepage layer 9 is a fiberglass anti-seepage isolation layer;

[0045] The water collecting layer 8 has a thickness of 250 mm and is composed of crushed stones with a diameter of about 0.5 to 10 mm;

[0046] The thickness of the composite percolation layer 7 is 1500mm, and it is filled with fly ash, sintered ceramic powder and river sand with a particle size of 0.1mm~1mm according to the ratio of 1:1:1;

[0047] The biological treatment layer 6 has a thickness of 300 mm, and is filled with sintered ceramic powder with a particle size of 1 mm to 5 mm after biological pre-film treatment;

[0048] The water distribution layer 5 has a thickness of 300mm and is composed of gravels with a diameter of about 10-50mm.

[0049] According to the present invention built according to the scheme of the first embodiment, its investment is only 1 / 5~1 / 7 of the conventional treatment process, and there is bas...

Embodiment 2

[0051]The ecological filter bed is as follows from bottom to top:

[0052] The anti-seepage layer 9 is an HDPE composite anti-seepage layer;

[0053] The water collection layer 8 has a thickness of 200mm and is composed of crushed stones with a diameter of about 0.5-10mm;

[0054] The thickness of the composite percolation layer 7 is 1500mm, and it is filled with fly ash with a particle size of 0.1mm~1mm, pulverized slag and river sand in a ratio of 1:1:2;

[0055] The biological treatment layer 6 has a thickness of 300 mm, and is filled with sintered ceramic powder with a particle size of 1 mm to 5 mm after biological pre-film treatment;

[0056] The water distribution layer 5 has a thickness of 300mm and is composed of gravels with a diameter of about 10-50mm.

[0057] According to the present invention built according to the second embodiment, its investment is only 1 / 5 of the conventional treatment process, and there is basically no operating cost. The operation effect ...

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Abstract

The invention discloses a system and method for treating sewage at zero energy consumption by using an ecological filter bed. The system comprises a sewage pipe, a gravity water distribution system, the ecological filter bed and a water collecting system, wherein the sewage pipe is connected with the gravity water distribution system, the gravity water distribution system is arranged at the upper part of the ecological filter bed, and the water collecting system is arranged at the bottom of the ecological filter bed; the gravity water distribution system comprises a water inlet pipe, a water distribution pad, a water distributor and a supporting seat, wherein the section of the water distributor is inverted triangular, the inside of the water distributor is divided into two grids by using a partition plate, the water distributor is arranged on the supporting seat and can be freely turned towards two sides, the water inlet pipe is connected with the sewage pipe, and the other end of the water inlet pipe is arranged above the water distributor; and the ecological filter bed is composed of multistage infiltration layers sequentially including an impermeable layer, a water collecting layer, a composite infiltration layer, a biological treatment layer and a water distribution layer from bottom to top. The system is uniform in water distribution, strong in nitrogen and phosphorus removal capacity and good in water treatment quality, has the advantages of small floor area, simplicity in management and low operation cost and can realize sludge-free discharge.

Description

technical field [0001] The invention relates to an in-situ diafiltration treatment system and method for septic tank sewage, which is suitable for in-situ treatment of sewage in scattered residential areas such as villages, villas, and resorts. It belongs to the technical field of sewage treatment. Background technique [0002] With the continuous improvement of rural areas and the development of resort tourism, the domestic sewage treatment of scattered residential areas far away from the city has attracted more and more attention. Due to the relatively scattered areas and the complex and changeable terrain of the countryside, it is difficult to establish a centralized pipe network collection system and large-scale sewage treatment plants for sewage treatment, and decentralized sewage treatment is generally used. At present, the processes commonly used in decentralized sewage treatment mainly include the oxidation ditch process of the activated sludge process, the delayed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 迟斌徐甜王星星
Owner 恒蓝水务有限公司
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