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Rural sewage in-situ treatment and recycling system and method

A technology for in-situ treatment of rural sewage, applied in chemical instruments and methods, multi-stage water/sewage treatment, biological water/sewage treatment, etc. and other problems, to achieve the effect of reducing operating costs and energy consumption, improving resource utilization, and realizing resource utilization

Pending Publication Date: 2022-05-13
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improper treatment of rural sewage can cause the following problems: first, it will pollute the soil and groundwater; second, it will pollute the surface water
[0004] Since most of the rural population lives in scattered places, it is difficult to carry out centralized sewage treatment
Most rural areas have basically no drainage channels and sewage treatment systems. It is difficult to centrally collect sewage and the cost of pipe network laying is high, which makes rural sewage cause serious environmental problems; rural domestic water supply is difficult, and domestic sewage recycling can largely be achieved. Alleviate this problem; with the improvement of decentralized rural sewage discharge standards, a single treatment technology is no longer able to meet the expected goals

Method used

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  • Rural sewage in-situ treatment and recycling system and method
  • Rural sewage in-situ treatment and recycling system and method
  • Rural sewage in-situ treatment and recycling system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0081] This embodiment provides a system for in-situ treatment and recycling of rural sewage, including a pretreatment unit, a hydrolysis acidification unit, a combined serial biological treatment unit, a solid-liquid separation unit and a post-treatment unit connected in sequence;

[0082] Wherein, the pretreatment unit includes: a sump 1;

[0083] Hydrolysis acidification unit comprises: hydrolysis acidification reaction tank 3 and overflow plate 2; The bottom of sump 1 is connected with the inlet end of hydrolysis acidification reaction tank 3; Overflow plate 2 is positioned at the water outlet inboard of hydrolysis acidification reaction tank 3;

[0084] The combined series biological treatment unit includes: combined series biological reaction tank 14 and packing layer, wherein combined series series biological reaction tank 14 is communicated with hydrolysis acidification reaction tank 3; packing layer is communicated with solid-liquid separation unit 12.

[0085] In ord...

Embodiment 2

[0121] On the basis of embodiment 1, the present embodiment provides a kind of rural sewage in situ treatment and resource utilization system and method;

[0122] Taking a family of three in a rural area as an example, the daily domestic water consumption is about 80L. According to the amount of domestic sewage generated every day and the saturation capacity of the rural sewage in-situ treatment and resource utilization system, the in-situ treatment of rural sewage and the resources The system design is as follows:

[0123] The effective volume of the water collection tank 1 is 10L, and the effective volume of the hydrolysis acidification reaction tank 3 is 30L; and the material of the water collection tank 1 and the hydrolysis acidification reaction tank 3 is concrete.

[0124] In order to optimize above-mentioned technical scheme further, be communicated by pipeline between sump 1 and hydrolytic acidification tank.

[0125] The size of the purification module is diameter*he...

Embodiment 3

[0138] On the basis of embodiment 2, the present embodiment provides a kind of rural sewage in situ treatment and resource utilization system and method;

[0139] Taking a family of four in a rural area as an example, the daily domestic water consumption is about 110L, the effective volume of the sump 1 is designed to be 20L, and the effective volume of the hydrolytic acidification reaction tank 3 is 40L;

[0140] The size of the purification module is diameter*height=5m*2.5m, and the volume is 196.25m 3 .

[0141] The purification module includes: a combined serial biological reaction unit, a solid-liquid separation unit and a post-processing unit, and the volume above refers to the total volume of these three units.

[0142] In order to optimize above-mentioned technical scheme further, be communicated by pipeline between sump tank 1 and hydrolytic acidification reaction tank 3.

[0143] 6 hole numbers of annular water distribution pipe are 12, and diameter is 60mm, and the ...

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Abstract

The invention discloses an in-situ treatment and recycling system for rural sewage. The in-situ treatment and recycling system comprises a pretreatment unit, a hydrolytic acidification unit, a combined serial biological treatment unit, a solid-liquid separation unit and a post-treatment unit which are connected in sequence, the pretreatment unit comprises a water collecting tank; the hydrolytic acidification unit comprises a hydrolytic acidification reaction tank and an overflow plate; the bottom end of the water collecting tank is connected with the inlet end of the hydrolytic acidification reaction tank; the overflow plate is positioned on the inner side of the water outlet of the hydrolytic acidification reaction tank; the combined series biological treatment unit comprises a combined series biological reaction tank and a filler layer, and the combined series biological reaction tank is communicated with the hydrolytic acidification reaction tank; and the filler layer is communicated with the solid-liquid separation unit. According to the invention, sewage flows from top to bottom by utilizing the height difference without additional power, in-situ treatment of rural sewage is realized, and the sewage treated by the system can reach the water quality standard of farmland irrigation water, so that maximum recycling is realized.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, and more specifically relates to a system and method for in-situ treatment and resource utilization of rural sewage. Background technique [0002] Rural sewage generally has the characteristics of difficult collection, uneven discharge, large daily variation coefficient, and large fluctuations in water quality and quantity. The random discharge of rural sewage will have a serious impact on the local rural water environment, and will also have a certain impact on the local drinking water. Improper treatment of rural sewage can cause the following problems: first, it will pollute the soil and groundwater; second, it will pollute the surface water. If the village is located in an ecologically sensitive area such as the primary or secondary protection zone or quasi-protection zone of the drinking water source, domestic sewage will be discharged into the water source directly or with the rai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
CPCC02F9/00C02F3/30C02F3/28C02F1/66C02F3/301C02F3/302C02F3/308C02F1/001C02F2301/08C02F2101/30C02F2001/007
Inventor 刘建伟艾鑫宇田洪钰迟名佳
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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