Ecological method for purifying trench sewage

A technology for ecological ditches and sewage purification, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc. question

Inactive Publication Date: 2007-04-25
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the ecological ditches studied by the above scholars can also reduce certain pollutant loads, there is no report on the ditch treatment technology for high-concentration and high-load pollutants, and the abo

Method used

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  • Ecological method for purifying trench sewage
  • Ecological method for purifying trench sewage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The maximum daily processing capacity is 160m 3 ecological ditch system:

[0020] Canal width: W=0.75m;

[0021] The length * width * depth of grit chamber (1) = 2m * 1m * 1.5m;

[0022] The length * H (depth)=1m * 1.5m of microbial treatment tank (2);

[0023] The length × width × depth of the acidification hydrolysis tank (3) = 1m × 1m × 1.5m, built with concrete, and add cement or plank cover, add nitrifying bacteria from time to time depending on the degree of treatment;

[0024] The length * H (depth)=1m * 1m of windmill aeration tank (4);

[0025] Gravel interception and biological contact oxidation bed (5) length * h (height) = 20m * 0.2m;

[0026] The length of the composite media adsorption bed (6) x h (height) = 25m x 0.2m, using cinder as the filter adsorption medium;

[0027] Composite media filter adsorption bed (7) length × h (height) = 25m × 0.2m, using zeolite as filter adsorption medium;

[0028] The aquatic plants (9) are selected calamus and / or ...

Embodiment 2

[0032]Composite medium filter adsorption bed (6) length × h (height) = 25m × 0.2m, using zeolite as filter adsorption medium;

[0033] Composite media filter adsorption bed (7) length * h (height) = 25m * 0.2m, using bamboo charcoal as filter adsorption medium;

[0034] All the other are with embodiment 1.

[0035] The average residence time of mixed sewage in the ecological ditch system in the dry season is about 8 hours, and the discharge water quality can meet the national landscape entertainment water discharge standard.

[0036] The invention not only ensures the unimpeded drainage of towns and farmland, but also enables the transformed drainage ditch to have a strong purification effect on the high-load mixed sewage composed of urban sewage and farmland drainage. It can effectively solve the problem of non-point source pollution in cities and towns, and protect water Environment, due to the full use of the existing ditches, the floor area is small, or even zero, and the...

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Abstract

The invention discloses a sewage purifying method of ecological canal, which is characterized by the following: blending urban living sewage and agricultural drainage to dispose through rough grid, grit catcher, fine grid, microbe disposing pond, acidifying hydrolytic pond and windmill aeration aero-tank; intercepting the mixing of gravel and agricultural drainage after contacting the oxidizing bed; filtering through composite dielectric; purifying in the adsorbing bed layer to obtain the drainable water.

Description

1. Technical field [0001] The invention belongs to the technical field of biological treatment of water, waste water or sewage, and particularly relates to a technology for reducing eutrophication substances such as N and P in high-load urban and farmland non-point source sewage by using plants. 2. Background technology [0002] With the increase of urban population and the continuous improvement of urban and rural people's living standards, the contradiction between urban environmental pollution and economic development has become increasingly prominent, and water pollution has become a public hazard for sustainable urban development. Sources of water pollution can be divided into two categories: point source pollution and non-point source pollution. Point source pollution caused by large and medium-sized enterprises falls within the scope of internal governance of the enterprise; while urban domestic sewage, a small amount of sewage discharged by small enterprises, and agri...

Claims

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Application Information

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IPC IPC(8): C02F3/02C02F3/32
CPCY02W10/10
Inventor 胡正义吴永红杨林章林先贵王一明
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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