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Urban domestic sewage natural treatment method

A technology for urban domestic sewage and sewage treatment, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It can be large or small, with strong practicability and broad application prospects.

Inactive Publication Date: 2012-01-11
邹立基
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sludge from sewage treatment plants contains a large amount of harmful substances such as heavy metals and pathogenic bacteria, but no real outlet has been found so far, causing secondary pollution to the environment

Method used

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  • Urban domestic sewage natural treatment method
  • Urban domestic sewage natural treatment method
  • Urban domestic sewage natural treatment method

Examples

Experimental program
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Embodiment Construction

[0032] Select a piece of land and set up a sewage treatment system on the land. For the structure of the system, see figure 1 , figure 2 , comprising sequentially arranged sewage settlement well 1, connecting pipe 2, main ditch 4, seepage ditch 5, catchment ditch 6, there is a hydrophobic bed 7 below the seepage ditch 5, and a microbial supply pipe 3 is welded on the connecting pipe 2.

[0033] The detailed structure of each part is as follows.

[0034] (1) Before building the ditch, lay a layer of 8-12cm thick sand and small stone mixture under each seepage ditch 5 to form a hydrophobic bed 7. The purpose of setting the hydrophobic bed 7 is to evacuate the sewage and quickly infiltrate it. into the surrounding soil. More than 5 seepage ditches are juxtaposed, and the distance between adjacent seepage ditches is 80-120cm. One end of seepage ditch 5 communicates with general ditch 4, and the other end is a blind end. The ditch walls of the main ditch 4 and the seepage ditc...

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Abstract

The invention relates to an urban domestic sewage natural treatment method. In the method, sewage is introduced into soil to create an optimal living environment for microorganisms, so that the microorganisms can reproduce fast to degrade organic pollutants in the sewage efficiently; plants growing in soil are used to absorb mineral nutrition in the sewage; and the root bark layers of the plants can be used to absorb and store heavy metal in the sewage. The invention has the advantages of strong practicability, wide application range, flexible scale, good flexibility and extremely wide application prospect.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a natural treatment method for urban domestic sewage. Background technique [0002] Sewage is the largest source of human pollution to nature. At present, urban domestic sewage is treated through sewage treatment plants. Sewage treatment plants have complex processes, numerous facilities, large area, huge investment, and high treatment costs. Many small and medium-sized cities do not have the financial resources to build sewage Treatment plants, most of the urban domestic sewage is directly discharged into rivers without treatment, and only a small part is treated. [0003] The main pollution source of urban domestic sewage is organic matter, followed by minerals such as nitrogen, phosphorus and potassium, and heavy metals. The core technical means to control organic pollutants is microbial degradation. In conventional sewage treatment plants, microorganisms are added to sewage, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/32C02F3/34
Inventor 邹立基
Owner 邹立基
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