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Zero-emission treatment system for domestic sewage and treatment method

A technology of domestic sewage and treatment system, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Problems such as normal operation

Inactive Publication Date: 2017-07-18
BEIJING FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention aims at the problems of secondary pollution of air and groundwater caused by sewage odor and infiltration in traditional sewage treatment technology, and the general artificial wetland cannot operate normally in winter, and provides a zero-discharge treatment system for domestic sewage and uses the treatment system to treat domestic sewage Methods

Method used

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  • Zero-emission treatment system for domestic sewage and treatment method
  • Zero-emission treatment system for domestic sewage and treatment method
  • Zero-emission treatment system for domestic sewage and treatment method

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Experimental program
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Effect test

Embodiment 1

[0112] Refer to the attached Figure 1-3 The domestic sewage treatment system of the present invention will be described in detail.

[0113] Such as figure 1 As shown, the domestic sewage zero discharge treatment system of the present invention includes a domestic sewage sedimentation device 1, a water distribution device 2, an underflow constructed wetland 3 and an anti-seepage device 4, wherein the sedimentation device and the water distribution device are connected through a connecting pipe 5 ; The water distribution device is arranged in the middle and upper part of the subsurface flow constructed wetland, and the anti-seepage device is laid on the bottom and side walls of the subsurface flow constructed wetland. The depth of the bottom of the subsurface constructed wetland from the surface is 1.5-2.0m (preferably 2m), that is, the depth of the subsurface constructed wetland is 1.5-2.0m (preferably 2m).

[0114] Such as image 3 The domestic sewage sedimentation device ...

Embodiment 2

[0134] The embodiment of the present invention is 5m with hydraulic load 3 / day as an example.

[0135] 1. Excavating artificial wetland bed

[0136] Excavate a trapezoidal pit in the open space of the domestic sewage treatment area as the bed of the constructed wetland; the length and width of the upper bottom of the pit are 50m and 10m respectively, and the length and width of the lower bottom are 46m and 6m respectively; depth At the same time, the original soil excavated from the wetland bed is passed through a sieve for sieving treatment, and the stones with a particle size larger than 2cm and the soil with a particle size smaller than 2cm in the original soil are screened out;

[0137] Sieve the original soil: larger stones are used to lay the gravel cushion, finer soil is used to mix with inorganic fillers (such as vermiculite, zeolite) and then backfilled as an artificial matrix layer, and the surface layer is covered with a sandy soil cover layer.

[0138] The grave...

Embodiment 2A

[0175] Except that the willow tree planted on the planting substrate of the artificial wetland is red bark willow, all the other are the same as embodiment 2, measure the water quality in the observation well, and the measurement results are as shown in table 2; the growth state measurement results of the plants are as shown in table 3; Table 4 shows the results of determination of plant stem and leaf element distribution.

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Abstract

The invention discloses a zero-emission treatment system for domestic sewage and a treatment method and belongs to the technical field of environment-friendly sewage treatment. The treatment system comprises a domestic sewage precipitation device, a water distribution device, a subsurface-flow constructed wetland and an anti-percolator, wherein the precipitation device is connected with the water distribution device through a pipe; the water distribution device is arranged at the middle and upper part of the subsurface-flow constructed wetland; and the anti-percolator is paved at the bottom and the side wall of the subsurface-flow constructed wetland. The sewage treated by the precipitation device is conveyed to the constructed wetland through the water distribution device, nitrogen and phosphorus and organic pollutants in water are filtered, intercepted, adsorbed, decomposed, absorbed and utilized by roots and stems of plants, and material circulation is achieved through regular cutting. The anti-percolator is paved on the constructed wetland, so that consumption and utilization of the domestic sewage in the constructed wetland of willows with certain planting density are ensured and the target of zero-emission treatment of the sewage is achieved.

Description

technical field [0001] The invention relates to a domestic sewage zero-discharge treatment technology and a design method thereof, which is especially suitable for rural areas without special drainage systems, and is suitable for the technical field of environmental protection sewage treatment. Background technique [0002] With the progress of society, people have higher requirements for sewage treatment technology, not only emphasizing on the high efficiency of pollutant removal, but more importantly, they hope that the treatment facilities can be well integrated with the surrounding environment, and land treatment The decentralized ecological processing technology represented by ZD can just meet people's requirements. Soil sewage treatment system is an ecological engineering technology for sewage treatment. Its principle is to purify and decompose the pollutants in sewage through the biological, chemical and physical fixation and degradation of soil-plant systems such as ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/006C02F3/32C02F9/00C02F2001/007Y02W10/37
Inventor 孙向阳祁娜禹宙时光寨周旭昌张骅
Owner BEIJING FORESTRY UNIVERSITY
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