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Domestic wastewater standard recycling treatment system applicable to northern countryside

A domestic sewage and treatment system technology, applied in the direction of biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the difficulty of overwintering domestic sewage treatment projects and the small amount of water resources per capita , poor hands-on ability of farmers and other problems, to achieve the effect of normal operation in winter, obvious nitrogen and phosphorus removal effect, and convenient maintenance and use

Active Publication Date: 2015-01-28
INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the low temperature in winter in the north, it is difficult for domestic sewage treatment projects to survive the winter; water resources are scarce, and the per capita water resources are small; the rural economic foundation is weak, and it is unable to afford domestic sewage treatment facilities with high construction costs and high operating costs; farmers have poor hands-on ability. The maintenance and use of complex facilities is unacceptable. The present invention provides a domestic sewage treatment system and method suitable for northern rural areas.

Method used

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  • Domestic wastewater standard recycling treatment system applicable to northern countryside
  • Domestic wastewater standard recycling treatment system applicable to northern countryside
  • Domestic wastewater standard recycling treatment system applicable to northern countryside

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Domestic sewage treatment system and method applicable to rural areas with a population of 600 in Shandong

[0044] The daily domestic sewage production of 600 people is about 18t, and the COD, BOD, TSS, NH3-N and TP of domestic sewage are 520mg / L, 208mg / L, 182mg / L, 27.5mg / L, 6.4mg / L respectively, According to the amount of domestic sewage produced every day and the characteristics of domestic sewage, it is suitable for the standard domestic sewage reuse treatment system in northern rural areas. The structure is as follows Figure 1-Figure 4 As shown, it includes a sewage collection pretreatment tank and a sewage treatment unit. The sewage collection pretreatment tank is divided into a sump 1, a grit chamber 2 and a regulating tank 7 by a partition, and the volume of the sump 1 is 9m 3 , the size is length × width × height = 3.0m × 2.0m × 1.5m; the volume of grit chamber 2 is 6m 3 , the size is length×width×height=2.0m×2.0m×1.5m; the volume of regulating pool 7 is 18m ...

Embodiment 2

[0050] Example 2: A domestic sewage treatment system and method suitable for 600-population rural areas in Ningxia

[0051] As described in Example 1, the domestic sewage up-to-standard reuse treatment system applicable to rural areas in the north is different in that:

[0052] The thickness of insulation layer is 8cm, and connecting pipe 23 is arranged at the place apart from collection room bottom 3cm, and the thickness of the first pebble layer is 12cm, and the average particle diameter of pebble is 3cm, and the thickness of yellow sand layer is thickness 32cm, and the average particle diameter of yellow sand is 0.8cm. mm, the thickness of the zeolite layer is 30cm, the average particle diameter of the average particle diameter of the zeolite is 2.5mm, the thickness of the second pebble layer is 12cm, and the average particle diameter of the pebble is 1.5cm. The interlayer is a filter cloth layer, and the thickness of the soil layer is 45cm.

[0053] There are two solar pa...

Embodiment 3

[0054] Example 3: A domestic sewage treatment system and method suitable for 600-population rural areas in Liaoning

[0055] As described in Example 1, the domestic sewage up-to-standard reuse treatment system applicable to rural areas in the north is different in that:

[0056] The thickness of insulation layer is 10cm, and connecting pipe 23 is arranged at 5cm from the bottom of collection chamber, the thickness of the first pebble layer is 15cm, and the average particle diameter of pebble is 4cm, and the thickness of yellow sand layer is thickness 35cm, and the average particle diameter of yellow sand is 1.2cm. mm, the thickness of the zeolite layer is 35cm, the average particle diameter of the average particle diameter of the zeolite is 3mm, the thickness of the second pebble layer is 15cm, and the average particle diameter of the pebble is 2cm. The interlayer is a filter cloth layer, and the thickness of the soil layer is 50cm.

[0057] There are two solar panels at the ...

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Abstract

The invention relates to a domestic wastewater standard recycling treatment system applicable to the northern countryside. The domestic wastewater standard recycling treatment system applicable to the northern countryside comprises a wastewater collection and pretreatment pool and wastewater treatment units; each wastewater treatment unit comprises a wastewater treatment pool, a water inlet pipe, a water distribution pipe and a plant purifying pool; a filtering packing layer is arranged in a filtering chamber and comprises a first pebble layer, a yellow sand layer and a second pebble layer from the top down in sequence; each water distribution pipe is positioned in the first pebble layer and connected with a submersible pump in a regulating reservoir through one water inlet pipe; an insulating layer is arranged on the outer surface of each of the wastewater collection and pretreatment pool, the wastewater treatment pools and the plant purifying pools. The invention solves the problem of difficulty in overwintering of domestic wastewater treatment projects in the northern countryside; outlet water reaches the primary standard A of the pollution discharge standard for municipal wastewater treatment plants and is recycled, so that water resource is saved; the system is low in construction cost, low in running cost and simple in maintenance and use, can be operated by farmers and be used for a long time, and does not require back wash.

Description

technical field [0001] The invention relates to a domestic sewage treatment system and method applicable to northern rural areas and belongs to the technical field of waste water treatment. Background technique [0002] In recent years, with the continuous development of the economy and the continuous increase of farmers' income, rural living facilities, living environment and consumption patterns have also undergone major changes. Equipment such as tap water pipe networks and sanitary showers have gradually entered the households of ordinary people, and domestic sewage discharge volume increased sharply. For a long time, due to the influence of economic development, environmental awareness and other reasons, most rural areas have no sewage collection and treatment system. Most of the domestic sewage is discharged into the ditch beside the house or the outdoor space and seeps into the ground, seriously polluting water, air and soil environment. At the same time, northern C...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCY02W10/37C02F9/00C02F3/32
Inventor 王艳芹付龙云姚利杨光高燕袁长波宋效宗
Owner INST OF AGRI RESOURCES & ENVIRONMENT SHANDONG ACADEMY OF AGRI SCI
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