CN112573758A - Rural distributed sewage ecological treatment process - Google Patents
Rural distributed sewage ecological treatment process Download PDFInfo
- Publication number
- CN112573758A CN112573758A CN202011286572.2A CN202011286572A CN112573758A CN 112573758 A CN112573758 A CN 112573758A CN 202011286572 A CN202011286572 A CN 202011286572A CN 112573758 A CN112573758 A CN 112573758A
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- China
- Prior art keywords
- sewage
- aquatic plant
- artificial wetland
- treatment process
- layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
Abstract
The invention relates to the technical field of sewage ecological treatment process, in particular to a rural distributed sewage ecological treatment process, which comprises a sewage collecting sedimentation tank, a diversion channel, an artificial wetland, an ecological fishpond and a reservoir, wherein the artificial wetland is connected with the reservoir through a diversion pipe, the artificial wetland consists of a tank body, a base layer, a first aquatic plant and a second aquatic plant, the design of the invention effectively solves the problems that rural household domestic wastewater comprises kitchen water, toilet water, washing water and the like, if rural domestic drainage is not properly treated, the non-point source pollution load of agricultural land can be increased, the crop growth and the river water quality are further influenced, sewage collecting pipelines are not arranged in many small and medium-sized cities and rural areas, untreated domestic drainage becomes one of important pollution sources, and the areas are not suitable for introducing a centralized sewage treatment system due to high construction and operation costs, but rather the problem of requiring low cost, high efficiency, decentralized wastewater treatment technologies.
Description
Technical Field
The invention relates to the technical field of sewage ecological treatment processes, in particular to a rural distributed sewage ecological treatment process.
Background
Rural domestic wastewater comprises kitchen water, toilet water, washing water and the like, if rural domestic wastewater is not properly treated, non-point source pollution load of agricultural land can be increased, crop growth and river water quality are further influenced, sewage collecting pipelines are not arranged in many small and medium-sized cities and rural areas, untreated domestic wastewater becomes one of important pollution sources, and due to high construction and operation costs, the areas are not suitable for introducing a centralized sewage treatment system, but low-cost, high-efficiency and distributed sewage treatment technologies are needed.
In conclusion, the invention solves the existing problems by designing a rural distributed sewage ecological treatment process.
Disclosure of Invention
The invention aims to provide a rural distributed sewage ecological treatment process, which aims to solve the problems that rural household domestic wastewater comprises kitchen water, toilet water, washing water and the like, if rural domestic wastewater is not properly treated, non-point source pollution load of agricultural land can be increased, crop growth and river water quality are further influenced, sewage collection pipelines are not arranged in a plurality of small and medium-sized cities and rural areas, untreated domestic wastewater becomes one of important pollution sources, and due to higher construction and operation costs, the areas are not suitable for introducing a centralized sewage treatment system and need low-cost, high-efficiency and distributed sewage treatment technologies.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a rural distributed sewage ecological treatment process, collects sedimentation tank, water conservancy diversion canal, constructed wetland, ecological pond and cistern including sewage, constructed wetland is connected with the cistern through the honeycomb duct, constructed wetland comprises cell body, basic unit, first aquatic plant and second aquatic plant.
Preferably, the sewage treatment process comprises the following steps:
s1, injecting the sewage into a sewage collection and sedimentation tank, adding a flocculating agent into the sewage, standing for 5-6h, opening a gate of the sewage collection and sedimentation tank after the sludge in the sewage is precipitated at the bottom of the sewage collection and sedimentation tank, and allowing the sewage without the sludge to flow into a diversion channel;
s2, the sewage flowing along the diversion channel enters the artificial wetland, and the first aquatic plant and the second aquatic plant planted in the artificial wetland absorb phosphorus-containing compounds and ammonia nitrogen compounds in the sewage;
s3, the water treated by the artificial wetland flows into a reservoir through a flow guide pipe to be stored for later use;
s4, harvesting the first aquatic plant and the second aquatic plant which grow to be mature in the artificial wetland, and preparing the harvested first aquatic plant and the harvested second aquatic plant into feed to be thrown into the ecological fishpond.
Preferably, the constructed wetland has a tank body with the length of 2m, the width of 1.5m and the height of 2m, and is built by bricks, the inner wall of the tank body is coated by mortar, a geomembrane is used as a waterproof material, and the geomembrane is placed between the bricks and the mortar.
Preferably, the base layer of the artificial wetland consists of a pebble layer, a gravel layer, a coarse sand layer and a fine sand layer, and the heights of the pebble layer, the gravel layer, the coarse sand layer and the fine sand layer are all 30 cm.
Preferably, the particle diameter of the pebble layer and the crushed stone layer in the base layer is 3-4cm, the particle diameter of the coarse sand layer is 1-1.5cm, and the particle diameter of the fine sand layer is less than 0.8 cm.
Preferably, the first aquatic plant is typha orientalis, the second aquatic plant is cucurbita pepo, the first aquatic plant is planted along the side wall of the tank body, and the second aquatic plant is planted in the center of the water surface of the tank body.
Preferably, the diversion trench is a stepped diversion trench, and the step height of each layer of the diversion trench is 18 cm.
Preferably, a sludge delivery pump and a sludge pumping pipe are arranged on the sewage collecting and settling tank, and the sludge pumping pipe is made of stainless steel.
Preferably, the artificial wetland is a vertical subsurface flow type artificial wetland, and a filter screen is arranged in a flow guide pipe connecting the artificial wetland and the reservoir.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention solves the problems that rural domestic wastewater comprises kitchen water, toilet water, washing water and the like, if rural domestic wastewater is not properly treated, non-point source pollution load of agricultural land can be increased, crop growth and river water quality are further influenced, sewage collecting pipelines are not arranged in a plurality of small and medium-sized cities and rural areas, untreated domestic wastewater becomes one of important pollution sources, and due to high construction and operation cost, the areas are not suitable for introducing a centralized sewage treatment system and need low-cost, high-efficiency and distributed sewage treatment technology.
2. According to the invention, by designing the stepped diversion trench, when sewage flows through the stepped diversion trench, the stepped diversion trench can increase the flow path of the sewage and increase the contact area of the sewage and air, so that the sewage is fully contacted with oxygen in the air, an aeration effect is achieved, and no additional aeration equipment is required.
3. According to the invention, the first aquatic plant and the second aquatic plant are planted in the artificial wetland, the first aquatic plant and the second aquatic plant can effectively absorb ammonia nitrogen compounds and phosphorus compounds in sewage, and can be used as feed for fish culture in an ecological fishpond after the first aquatic plant and the second aquatic plant are mature, so that the resource recycling is realized.
4. In the invention, the ecological fish pond is designed, so that the ecological fish pond can play a role in adjusting the water level of the artificial wetland, and in rainy seasons, the water level of the artificial wetland is higher, and the water in the artificial wetland is pumped into the ecological fish pond by using the water pump, so that the water level of the artificial wetland is ensured not to be too high, and domestic sewage cannot be injected; in dry seasons, the water level of the artificial wetland is low, and the water in the human ecological fish pond is conveyed into the artificial wetland by using the water suction pump, so that the water level of the artificial wetland is not too low, and the first aquatic plant and the second aquatic plant in the artificial wetland cannot normally survive.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
The invention provides a technical scheme that:
the utility model provides a rural distributed sewage ecological treatment process, collects sedimentation tank, water conservancy diversion canal, constructed wetland, ecological pond and cistern including sewage, constructed wetland is connected with the cistern through the honeycomb duct, constructed wetland comprises cell body, basic unit, first aquatic plant and second aquatic plant.
Further, the sewage treatment process comprises the following steps:
s1, injecting the sewage into a sewage collection and sedimentation tank, adding a flocculating agent into the sewage, standing for 5-6h, opening a gate of the sewage collection and sedimentation tank after the sludge in the sewage is precipitated at the bottom of the sewage collection and sedimentation tank, and allowing the sewage without the sludge to flow into a diversion channel;
s2, the sewage flowing along the diversion channel enters the artificial wetland, and the first aquatic plant and the second aquatic plant planted in the artificial wetland absorb phosphorus-containing compounds and ammonia nitrogen compounds in the sewage;
s3, the water treated by the artificial wetland flows into a reservoir through a flow guide pipe to be stored for later use;
s4, harvesting the first aquatic plant and the second aquatic plant which grow to be mature in the artificial wetland, and preparing the harvested first aquatic plant and the harvested second aquatic plant into feed to be thrown into the ecological fishpond.
Furthermore, the length of the constructed wetland is 2m, the width of the constructed wetland is 1.5m, the height of the constructed wetland is 2m, the constructed wetland is built by bricks, the inner wall of the constructed wetland is coated by mortar, a geomembrane is used as a waterproof material, and the geomembrane is placed between the bricks and the mortar.
Furthermore, the base layer of the artificial wetland consists of a pebble layer, a gravel layer, a coarse sand layer and a fine sand layer, and the heights of the pebble layer, the gravel layer, the coarse sand layer and the fine sand layer are all 30 cm.
Furthermore, the particle diameter of the pebble layer and the crushed stone layer in the base layer is 3-4cm, the particle diameter of the coarse sand layer is 1-1.5cm, and the particle diameter of the fine sand layer is less than 0.8 cm.
Furthermore, the first aquatic plant is cattail, the second aquatic plant is water hyacinth, and the first aquatic plant is planted along the lateral wall of the tank body, and the second aquatic plant is planted in the center of the water surface of the tank body.
Furthermore, the diversion trench is a step-shaped diversion trench, and the step height of each layer of the diversion trench is 18 cm.
Further, a sludge delivery pump and a sludge pumping pipe are arranged on the sewage collecting and precipitating tank, and the sludge pumping pipe is made of stainless steel.
Furthermore, the artificial wetland is a vertical subsurface flow type artificial wetland, and a filter screen is arranged in a flow guide pipe connecting the artificial wetland and the reservoir.
The implementation case is as follows:
injecting domestic sewage generated in rural areas into a sewage collecting and settling tank, adding a flocculating agent into the sewage collecting and settling tank, standing for 5-6 hours, opening a gate of the sewage collecting and settling tank after sludge in the sewage is settled to the bottom of the sewage collecting and settling tank, allowing the sewage without the sludge to flow into a diversion channel, starting a sludge delivery pump by a worker, pumping out the sludge settled at the bottom of the sewage collecting and settling tank through a sludge pumping pipe, and treating the pumped sludge;
when sewage flows through the stepped diversion channel, the stepped diversion channel can increase the distance for sewage to flow through, increase the contact area between the sewage and air, and fully contact the sewage and oxygen in the air, thereby achieving the effect of aerating the sewage;
the sewage flowing along the diversion channel can enter the artificial wetland, the sewage is sequentially filtered by the aquatic plants, the pebble layer, the gravel layer, the coarse sand layer and the fine sand layer in the artificial wetland layer by layer, organic matters, nitrogen and phosphorus in the sewage are absorbed and utilized by the root systems of the aquatic plants, the content of the organic matters, the nitrogen and the phosphorus in the sewage is greatly reduced to reach the effluent water quality standard, the cattail which is a first aquatic plant planted near the side wall of the constructed wetland cell body can slow down the flowing speed of the sewage, the retention time of the sewage in the artificial wetland is prolonged, and meanwhile, the sewage with high flow speed can be prevented from scattering a second aquatic plant, so that the second aquatic plant is excessively gathered at part of the cell body and cannot treat the sewage in the whole constructed wetland;
the water treated by the artificial wetland flows into the reservoir through the flow guide pipe to be stored for later use;
when the first aquatic plant and the second aquatic plant in the artificial wetland are mature, a worker harvests the mature first aquatic plant and the mature second aquatic plant, dries the harvested first aquatic plant and the harvested second aquatic plant to prepare a feed, puts the feed into an ecological fishpond and is used for feeding fish swarms cultured in the ecological fishpond, and the ecological fishpond can play a role in adjusting the water level of the artificial wetland; in dry seasons, the water level of the artificial wetland is low, and the water in the human ecological fish pond is conveyed into the artificial wetland by using the water suction pump, so that the water level of the artificial wetland is not too low, and the first aquatic plant and the second aquatic plant in the artificial wetland cannot normally survive.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The rural distributed sewage ecological treatment process is characterized by comprising a sewage collection sedimentation tank, a diversion channel, an artificial wetland, an ecological fishpond and a reservoir, wherein the artificial wetland is connected with the reservoir through a diversion pipe, and consists of a tank body, a base layer, a first aquatic plant and a second aquatic plant.
2. The rural distributed sewage ecological treatment process of claim 1, wherein the sewage treatment process comprises the following steps:
s1, injecting the sewage into a sewage collection and sedimentation tank, adding a flocculating agent into the sewage, standing for 5-6h, opening a gate of the sewage collection and sedimentation tank after the sludge in the sewage is precipitated at the bottom of the sewage collection and sedimentation tank, and allowing the sewage without the sludge to flow into a diversion channel;
s2, the sewage flowing along the diversion channel enters the artificial wetland, and the first aquatic plant and the second aquatic plant planted in the artificial wetland absorb phosphorus-containing compounds and ammonia nitrogen compounds in the sewage;
s3, the water treated by the artificial wetland flows into a reservoir through a flow guide pipe to be stored for later use;
s4, harvesting the first aquatic plant and the second aquatic plant which grow to be mature in the artificial wetland, and preparing the harvested first aquatic plant and the harvested second aquatic plant into feed to be thrown into the ecological fishpond.
3. The rural distributed sewage ecological treatment process according to claim 1, wherein the constructed wetland is constructed by bricks with a length of 2m, a width of 1.5m and a height of 2m, the inner wall of the pond is coated with mortar, a geomembrane is used as a waterproof material, and the geomembrane is placed between the bricks and the mortar.
4. The rural distributed sewage ecological treatment process of claim 1, wherein the base layer of the artificial wetland consists of a pebble layer, a gravel layer, a coarse sand layer and a fine sand layer, and the heights of the pebble layer, the gravel layer, the coarse sand layer and the fine sand layer are all 30 cm.
5. The rural distributed sewage ecological treatment process of claim 4, wherein the particle diameter of the pebble layer and the crushed stone layer in the base layer is 3-4cm, the particle diameter of the coarse sand layer is 1-1.5cm, and the particle diameter of the fine sand layer is less than 0.8 cm.
6. The rural distributed sewage ecological treatment process of claim 1, wherein the first aquatic plant is typha orientalis and the second aquatic plant is cucurbita pepo, and the first aquatic plant is planted along the side wall of the tank body and the second aquatic plant is planted at the center of the water surface of the tank body.
7. The rural distributed sewage ecological treatment process according to claim 1, wherein the diversion trench is a stepped diversion trench, and the step height of each layer of the diversion trench is 18 cm.
8. The rural distributed sewage ecological treatment process of claim 1, wherein a sludge delivery pump and a sludge pumping pipe are arranged on the sewage collecting and settling tank, and the sludge pumping pipe is made of stainless steel.
9. The rural distributed sewage ecological treatment process according to claim 1, wherein the artificial wetland is a vertical subsurface flow type artificial wetland, and a filter screen is installed in a flow guide pipe connecting the artificial wetland and the water reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011286572.2A CN112573758A (en) | 2020-11-17 | 2020-11-17 | Rural distributed sewage ecological treatment process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011286572.2A CN112573758A (en) | 2020-11-17 | 2020-11-17 | Rural distributed sewage ecological treatment process |
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| CN112573758A true CN112573758A (en) | 2021-03-30 |
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| CN202011286572.2A Pending CN112573758A (en) | 2020-11-17 | 2020-11-17 | Rural distributed sewage ecological treatment process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114835349A (en) * | 2022-06-02 | 2022-08-02 | 东珠生态环保股份有限公司 | Modularized sewage treatment device based on artificial wetland and treatment method thereof |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830564A (en) * | 2010-05-19 | 2010-09-15 | 四川省运辉环保工程咨询有限公司 | Plant pond bed integrally built constructed wetland sewage disposal system |
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| CN108383337A (en) * | 2018-05-10 | 2018-08-10 | 河池学院 | A kind of sewage diafiltration clean processing method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114835349A (en) * | 2022-06-02 | 2022-08-02 | 东珠生态环保股份有限公司 | Modularized sewage treatment device based on artificial wetland and treatment method thereof |
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Application publication date: 20210330 |