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Technology suitable for village sewage treatment

A sewage treatment and rural technology, applied in water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as unsuitable for rural sewage treatment, high operating costs, and difficult to clean up. , to achieve a strong ability to adsorb phosphate, reduce processing costs, and improve the effect of processing capacity

Inactive Publication Date: 2013-06-05
ZHONGKAI UNIV OF AGRI & ENG
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the traditional urban sewage treatment technology, which is not suitable for rural sewage treatment due to large investment and high operating costs; it also overcomes the shortage of large investment and easy blockage caused by artificial wetlands requiring a large number of artificially constructed pools and fillers. The shortcomings of not easy to clean up, propose a rural sewage treatment technology with low investment, low operating costs, and the C, N, and P in the wastewater can be recycled

Method used

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Embodiment 1

[0017] The following is one of the embodiments of the present invention, rural sewage COD is 114.67mg / L, BOD5 is 56.28mg / L, ammonia nitrogen is 18.41mg / L, TP is 1.80mg / L, SS is 99mg / L, present embodiment includes Follow these steps:

[0018] 1. Slope overflow (1), the daily water treatment volume is 120M3, and the area load is 2.67m 3 / m 2 / d, 15 meters long and 3 meters wide, divided into 2 groups, each group runs for 12 hours. The ryegrass is planted on it with a height of 50-80 cm. Due to the abundance of "fertilizer and water", the forage grass grows vigorously and densely. After tillering, it has completely covered the soil.

[0019] 2. The rural sewage after the slope overflow treatment enters the biological contact oxidation tank. Its effective volume is 5M3, the effective height is 4 meters, the total height is 4.3 meters, the area is 1.2×1M, the filling height is 3 meters, the hydraulic retention time is 1 hour, the aeration system is 0.138M3 / min, and the pressure ...

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Abstract

The invention relates to a technology suitable for village sewage treatment, and belongs to the field of environment protection. Due to large investment and high operation cost, a conventional urban sewage treatment technology is not suitable for the village sewage treatment, and a constructed wetland needs a lot of artificial construction pools and filling materials, is easy to cause large investment and obstructions, and is not easy to clean, so that the invention provides a technology of bio-contact oxidation and land treatment for treating village domestic sewage. The technology employs the bio-contact oxidation to treat easily to-be-treated BOD, uneasily to-be-treated COD, N and P are left to herbage rhizosphere microorganisms in overland flow for treatment. Due to rich fertilizer and water, herbages planted on the overland flow grow vigorous and dense and have developed roots. Rhizosphere microorganisms are huge in number and have strong activity. The soil has a strong capacity for absorbing phosphate, thereby effectively intercepting SS in the sewage. Therefore, COD, N, P and SS in the village sewage can be removed effectively. The technology is suitable for the village sewage treatment.

Description

technical field [0001] The invention relates to a sewage treatment technology, in particular to a rural sewage treatment technology. Background technique [0002] Rural domestic sewage is mostly discharged directly without treatment. The traditional urban sewage treatment technology is not suitable for rural sewage treatment due to its large investment and high operating costs; artificial wetlands require large investment and are easily blocked. Therefore, it is necessary to study a technology that is low in investment, low in operating costs, and suitable for rural sewage treatment. Contents of the invention [0003] The purpose of the present invention is to overcome the disadvantages that the traditional urban sewage treatment technology is not suitable for rural sewage treatment due to large investment and high operating costs; it also overcomes the shortage of large investment and easy blockage caused by artificial wetlands requiring a large number of artificially con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/32C02F3/02
CPCY02W10/10
Inventor 简放陵
Owner ZHONGKAI UNIV OF AGRI & ENG
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