CN110642417A - A method for collecting and purifying rural sewage and a system for collecting and purifying rural sewage - Google Patents

Abstract

The invention discloses a rural sewage collection, purification and utilization method and a rural sewage collection and purification system. The specific steps are to collect the rural sewage to a waste water collection unit nearby, then transport the sewage to the sewage purification unit, and put the sewage into the sewage purification unit by putting the sewage into the sewage purification unit. The water purifier performs the first step of purification and accompanying precipitation, and then performs solid-liquid separation to obtain the first purified water and sludge, and then filters the first purified water through the ultrafiltration purification unit to reduce COD, BOD, ammonia nitrogen, chroma, The turbidity, total phosphorus and other indicators can obtain the second purified water, which meets the national farmland irrigation and rural sewage discharge standards. The sewage is purified by the sewage water purifier. The purification process is not affected by the ambient temperature and water temperature. The sewage water purifier can achieve the purification effect without being affected by the amount of water, and can be popularized and used in the area north of the Yellow River.

Description

A method for collecting and purifying rural sewage and a system for collecting and purifying rural sewage

technical field

The invention belongs to the technical field of rural sewage treatment, and in particular relates to a rural sewage collection, purification and utilization method and a rural sewage collection and purification system.

Background technique

With a large rural population in my country, the construction of a beautiful rural environment has also received attention from the state and local governments. With the continuous advancement of new rural construction work, the living standards of rural people have been continuously improved, and people have higher requirements for the living environment. At the same time, the national It is also required that rural sewage discharge and farmland irrigation must meet discharge standards, so it is necessary to purify rural sewage for reuse.

In recent years, there have been many technologies for rural sewage treatment, such as purification tanks, MBR biofilms, turntable biofilms and other process technologies competing for the market. Currently, microbial technology is being promoted nationwide to purify rural sewage. The technology is difficult to popularize and use in areas north of the Yellow River.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a method for collecting and purifying rural sewage and a system for collecting and purifying rural sewage, whose sewage treatment is not affected by ambient temperature, water temperature and water volume, and can be popularized and used in areas north of the Yellow River.

For solving the above problems, the technical scheme of the present invention is:

A method for collecting, purifying and utilizing rural sewage, comprising the following steps:

Sewage collection, the domestic sewage is collected to the waste water collection unit through the collection pipeline;

Sewage purification treatment, the domestic sewage in the waste water collection unit is transported to the sewage purification unit, and the sewage The impurities in the domestic sewage are precipitated, and then solid-liquid separation is performed to obtain the first purified water and sludge, and the first purified water is transported to the clear water tank;

Ultrafiltration treatment, the first purified water in the clear water tank is transported to the ultrafiltration purification unit, the ultrafiltration purification unit is provided with a filter membrane, and the first purified water is filtered into the second purified water, The second purified water is delivered to the ultrafiltration clear water tank;

Return to the natural water system for reuse, and use the second purified water in the ultrafiltration clear water tank for greening, farmland, and vegetable irrigation.

Preferably, the conveying the domestic sewage in the waste water collection unit to the sewage purification unit further comprises conveying the domestic sewage into the sewage purification unit through a water pump; the conveying the domestic sewage in the clean water tank The conveying of the first purified water to the ultrafiltration purification unit further includes conveying the first purified water to the ultrafiltration purification unit through a water pump.

Preferably, further performing solid-liquid separation to obtain the first purified water and sludge further comprises making the sludge into fertilizer.

A rural sewage collection and purification system, comprising a waste water collection unit, a sewage purification unit, a clean water tank, an ultrafiltration purification unit and at least one ultrafiltration clean water tank connected in sequence by a water delivery pipeline;

the waste water collection unit, collecting domestic sewage to the waste water collection unit through a collection pipeline;

The sewage purification unit transports the domestic sewage in the waste water collection unit to the sewage purification unit, and the sewage purification unit is subjected to the first step of purification by putting in a sewage water purifying agent, followed by precipitation, and then the sewage purification unit. The solid-liquid separation obtains first purified water and sludge, and the first purified water is transported to the clear water tank;

The ultrafiltration purification unit transports the first purified water in the clear water tank to the ultrafiltration purification unit, and the ultrafiltration purification unit is provided with a filter membrane, and the first purified water is filtered into Second purified water, the second purified water is sent to the ultrafiltration clean water tank.

Preferably, the waste water collection unit includes a waste water collection tank and a liquid level monitor, the waste water collection tank is used for accommodating the domestic sewage, the liquid level monitor is installed on the waste water collection tank, and the liquid level monitoring The device is used to monitor the liquid level depth in the waste water collection tank.

Preferably, a control unit is also included, the control unit is connected between the liquid level monitor and the sewage purification unit, and is used to control the opening of the sewage purification unit.

Preferably, the sewage purification unit includes a sewage purification machine and a powder feeder, the powder feeder is installed on the upper end of the sewage purification machine, and the sewage water purification agent is put into the sewage purification unit.

Preferably, a water pump is provided between the waste water collection unit and the sewage purification unit, and between the clean water tank and the ultrafiltration purification unit.

Compared with the prior art, the present invention has the following advantages and positive effects due to the adoption of the above technical solutions:

1) A method for collecting, purifying and utilizing rural sewage provided by the present invention, the specific steps are to collect the rural sewage to a nearby waste water collection unit, and then transport the sewage into the sewage purification unit, and then put the sewage water purifying agent into the sewage purification unit. The first step is purification and precipitation, and then solid-liquid separation is carried out to obtain the first purified water and sludge, and then the first purified water is filtered through the ultrafiltration purification unit to reduce COD, BOD, ammonia nitrogen, chromaticity, turbidity, total Phosphorus and other indicators can obtain the second purified water, which meets the national farmland irrigation and rural sewage discharge standards. The sewage is purified by the sewage water purifying agent. The purification process is not affected by the ambient temperature and water temperature, as long as the sewage water purifying agent is added to the sewage. The purification effect can be achieved, and it is not affected by the amount of water. When the total amount of sewage is small, less sewage water purifying agent is put in. When the total amount of sewage is large, more sewage water purifying agent can be put in. This method can be used in It is popularized and used in the area north of the Yellow River.

2) A rural sewage collection and purification system provided by the present invention includes a waste water collection unit, a sewage purification unit, a clear water tank, an ultrafiltration purification unit and at least one ultrafiltration clear water tank connected by a water pipeline in turn, and collects rural sewage nearby. to the waste water collection unit, and then transport the sewage to the sewage purification unit, by putting the sewage water purifying agent into the sewage purification unit to carry out the first purification and accompanying precipitation, and then carry out solid-liquid separation to obtain the first purified water and sludge, Then, the first purified water is filtered by the ultrafiltration purification unit to reduce COD, BOD, ammonia nitrogen, chromaticity, turbidity, total phosphorus and other indicators to obtain the second purified water, which meets the national farmland irrigation and rural sewage discharge standards. The purification process is not affected by the ambient temperature and water temperature. As long as the sewage water purifier is added to the sewage, the purification effect can be achieved, and it is not affected by the amount of water. When the total amount of sewage is small There are few sewage water purifiers. When the total amount of sewage is large, more sewage water purifiers can be used. This method can be popularized and used in the area north of the Yellow River.

3) A kind of rural sewage collection and purification system provided by the present invention can include a plurality of ultrafiltration clear water ponds as required, and an ultrafiltration clear water pond can be set at a certain distance, or an ultrafiltration clear water pond can be set in a village, which increases the number of ultrafiltration clear water ponds. The clean water storage capacity of the rural sewage collection and purification system is also more convenient for greening, farmland, and vegetable irrigation.

Description of drawings

Fig. 1 is the step flow chart of a kind of rural sewage collection, purification and utilization method;

2 is a schematic block diagram of a rural sewage collection and purification system;

Fig. 3 is the schematic diagram of the waste water collection unit in Fig. 2;

FIG. 4 is a schematic diagram of the sewage purification unit in FIG. 2 .

Description of reference numbers:

1: Wastewater collection unit; 11: Wastewater collection tank; 12: Liquid level monitor; 2: Sewage purification unit; 21: Sewage purifier; 22: Powder feeder; 3: Clean water tank; 4: Ultrafiltration purification unit; 5 : Ultrafiltration clean water tank; 6: Control unit.

Detailed ways

A method for collecting and purifying rural sewage and a system for collecting and purifying rural sewage proposed by the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become apparent from the following description and claims.

Example 1

Referring to Fig. 1, Fig. 1 is a flow chart of the steps of a method for collecting, purifying and utilizing rural sewage. The present invention proposes a method for collecting, purifying and utilizing rural sewage, which includes the following steps: collecting sewage, collecting domestic sewage into a Wastewater collection unit; Sewage purification treatment, the domestic sewage in the waste water collection unit is transported to the sewage purification unit, and the sewage purification unit is carried out by inputting sewage water purifying agent for the first purification and accompanying precipitation, and then solid-liquid separation is carried out to obtain the first step. Purified water and sludge, the first purified water is transported to the clear water tank; ultrafiltration treatment, the first purified water in the clear water tank is transported to the ultrafiltration purification unit, and the ultrafiltration purification unit is provided with a filter membrane, and the first purified water is The second purified water is filtered into the second purified water, and the second purified water is transported to the ultra-filtered clear water tank; it is returned to the natural water system for reuse, and the second purified water in the ultra-filtered clear water tank is used for greening, farmland, and vegetable irrigation.

Sewage collection, small-scale collection of rural sewage, such as 20 households, 40 households, 60 households, 80 households, 100 households, 200 households, 300 households, 400 households, 500 households, 600 households, 800 households, 1000 households, small-scale sewage treatment The net is collected in the waste water collection unit, and the collection pipeline is connected from each villager's home to the waste water collection unit. The villagers pour the domestic sewage into the collection pipeline every day, and the domestic sewage of all the villagers is collected into the waste water collection unit.

Sewage purification treatment, the domestic sewage in the waste water collection unit is transported to the sewage purification unit. In this embodiment, the domestic sewage is automatically pumped from the waste water collection unit to the sewage purification unit by a water pump for the first purification treatment. After the sewage is pumped into the sewage purification unit, the sewage water purifying agent is put into the sewage purification unit for the first step of purification and accompanying sedimentation. In this embodiment, the sewage water purifying agent is pure natural minerals, starch, protein and other safe materials Refined. The agent is put into water and mixed and stirred to generate electric charge, which adsorbs various suspended pollutants in the water and precipitates rapidly. During the reaction, various organic and inorganic substances such as dissolved COD, SS, total nitrogen, and total phosphorus in the water body can be adsorbed and precipitated, forming large flocculent particles and then rapidly precipitated, achieving the purpose of rapid solid-liquid separation, and effectively locking Harmful substances such as solid heavy metals are no longer precipitated, and the sewage water purifier does not contain harmful substances, does not change the pH value of the water body, does not produce physical, chemical and ecological (mud, water, aquatic animals and plants) changes in the water body, and does not produce secondary pollution. secondary pollution. Then carry out solid-liquid separation to obtain the first purified water and sludge, the first purified water is transported to the clear water tank, and the sludge is made into fertilizer by harmless treatment technology, which is used for trees, flowers, farmland, economic crops and saline-alkali land. Improve.

Ultrafiltration treatment, the first purified water in the clear water tank is transported to the ultrafiltration purification unit, in this embodiment, the domestic sewage is automatically pumped from the clear water tank to the ultrafiltration purification unit by a water pump for the second purification treatment, and the ultrafiltration and purification process is carried out. There is a filter membrane in the filtration and purification unit to further reduce COD, BOD, ammonia nitrogen, chromaticity, turbidity, total phosphorus and other indicators, and filter the first purified water into the second purified water that meets the national farmland irrigation and rural sewage discharge standards. Then the second purified water is transported to the ultrafiltration clear water tank for storage and utilization. In this embodiment, a plurality of ultrafiltration clear water tanks can be set up as required, an ultrafiltration clear water tank can be set at a certain distance, or a village can be set up An ultrafiltration clear water tank increases the water storage capacity of the rural sewage collection and purification system, and also makes it more convenient for greening, farmland and vegetable irrigation.

Return to the natural water system for reuse, and use the second purified water in the ultrafiltration clear water tank for greening, farmland, and vegetable irrigation.

The present invention provides a method for collecting, purifying and utilizing rural sewage. The specific steps are to collect the rural sewage to a nearby waste water collection unit, then transport the sewage to the sewage purification unit, and put the sewage water purifying agent into the sewage purification unit to carry out the first step. Step purification and precipitation, and then carry out solid-liquid separation to obtain the first purified water and sludge, and then filter the first purified water through the ultrafiltration purification unit to reduce COD, BOD, ammonia nitrogen, chromaticity, turbidity, total phosphorus, etc. The index obtains the second purified water, which meets the national farmland irrigation and rural sewage discharge standards. The sewage is purified by the sewage water purifying agent. The purification process is not affected by the ambient temperature and water temperature, as long as the sewage water purifying agent is added to the sewage. To achieve the purification effect, it is also not affected by the amount of water. When the total amount of sewage is small, less sewage water purifying agent is put in. When the total amount of sewage is large, more sewage water purifying agent can be put in. This method can be used in the Yellow River. Promote the use in the northern region.

And this step is simple to operate. It only needs to put the sewage water purifying agent into the sewage purification unit to realize sewage purification, and simply train the villagers to start the operation.

Embodiment 2

Referring to FIG. 2, FIG. 2 is a schematic block diagram of a rural sewage collection and purification system. The present invention proposes a rural sewage collection and purification system, including a waste water collection unit 1, a sewage purification unit 2, Clean water tank 3, ultrafiltration purification unit 4 and at least one ultrafiltration clean water tank 5; waste water collection unit 1, collects domestic sewage to waste water collection unit 1 through collection pipes; sewage purification unit 2, collects domestic sewage in waste water collection unit 1 It is transported to the sewage purification unit 2. In the sewage purification unit 2, the first purification and accompanying sedimentation are carried out by inputting the sewage water purifying agent, and then the solid-liquid separation is carried out to obtain the first purified water and sludge, and the first purified water is transported to the clear water tank. 3; the ultrafiltration purification unit 4, the first purified water in the clear water tank 3 is transported to the ultrafiltration purification unit 4, and the ultrafiltration purification unit 4 is provided with a filter membrane, and the first purified water is filtered into the second purified water, and the first purified water is filtered into the second purified water. Second, the purified water is sent to the ultrafiltration clean water tank 5 .

Wastewater collection unit 1, used to collect domestic sewage, small-scale collection of rural sewage, such as 20 households, 40 households, 60 households, 80 households, 100 households, 200 households, 300 households, 400 households, 500 households, 600 households, 800 households . The sewage of 1,000 households is collected in the wastewater collection unit 1 through a small pipe network, and the collection pipe is connected from each villager's home to the wastewater collection unit 1. The villagers pour the domestic sewage into the collection pipe every day, and the domestic sewage of all the villagers is collected. In the waste water collection unit 1, see FIG. 3, which is a schematic diagram of the waste water collection unit in FIG. 2. In this embodiment, the waste water collection unit 1 includes a waste water collection tank 11 and a liquid level monitor 12. The waste water collection tank 11 For containing domestic sewage, the liquid level monitor 12 is installed on the waste water collection tank 11 , and the liquid level monitor 12 is used for monitoring the liquid level depth in the waste water collection tank 11 .

Sewage purification unit 2, the domestic sewage in the waste water collection unit 1 is transported to the sewage purification unit 2. Referring to FIG. 4, FIG. 4 is a schematic diagram of the sewage purification unit in FIG. 2. In this embodiment, the sewage purification unit 2 Including a sewage purifier 21 and a powder feeder 22, the domestic sewage is automatically pumped from the waste water collection tank 11 to the sewage purifier 21 through a water pump for the first purification treatment, and after the domestic sewage is pumped into the sewage purifier 21, powder feeding In the sewage purifier 22, an appropriate amount of sewage water purifying agent is put into the sewage purification machine through frequency conversion adjustment for the first step of purification and accompanying precipitation. In this embodiment, the sewage water purifying agent is refined from pure natural minerals, starch, protein and other safe materials. to make. The agent is put into water and mixed and stirred to generate electric charge, which adsorbs various suspended pollutants in the water and precipitates rapidly. During the reaction, various organic and inorganic substances such as dissolved COD, SS, total nitrogen, and total phosphorus in the water body can be adsorbed and precipitated, forming large flocculent particles and then rapidly precipitated, achieving the purpose of rapid solid-liquid separation, and effectively locking Harmful substances such as solid heavy metals are no longer precipitated, and the sewage water purifier does not contain harmful substances, does not change the pH value of the water body, does not produce physical, chemical and ecological (mud, water, aquatic animals and plants) changes in the water body, and does not produce secondary pollution. secondary pollution. Then carry out solid-liquid separation to obtain the first purified water and sludge, the first purified water is transported to the clear water tank 3, and the sludge is made into fertilizer by adopting a harmless treatment technology, which is used for trees, flowers, farmland, economic crops and For saline-alkali land improvement, in this embodiment, the rural sewage collection and purification system further includes a control unit 6, which is electrically connected between the liquid level monitor 12 and the sewage purification unit 2 for controlling the opening of the sewage purification unit 2.

The ultrafiltration purification unit 4 transports the first purified water in the clear water tank 3 to the ultrafiltration purification unit 4. In this embodiment, a water pump is provided between the clear water tank 3 and the ultrafiltration purification unit 4, and the ultrafiltration purification unit 4 Equipped with a filter membrane to further reduce COD, BOD, ammonia nitrogen, chromaticity, turbidity, total phosphorus and other indicators, the first purified water is filtered into the second purified water that meets the national farmland irrigation and rural sewage discharge standards, and then the first purified water is filtered. Two purified water is transported to the ultrafiltration clear water tank 5 for storage and utilization. In this embodiment, a plurality of ultrafiltration clear water tanks 5 can be set as required, and an ultrafiltration clear water tank 5 can be set at a certain distance, or a village can be set with one The ultrafiltration clear water tank 5 increases the clean water storage capacity of the rural sewage collection and purification system, and it is also more convenient for greening, farmland, and vegetable irrigation.

The present invention provides a rural sewage collection and purification system, which includes a waste water collection unit 1, a sewage purification unit 2, a clean water tank 3, an ultrafiltration purification unit 4 and at least one ultrafiltration clean water tank 5 connected in sequence by water pipes. The domestic sewage is collected into the waste water collection tank 11 through the collection pipeline, and the liquid level monitor 12 installed on the waste water collection tank 11 starts the sewage purification unit through the control unit 6 in time according to the monitored liquid level in the waste water collection tank 11. 2. Then, the domestic sewage in the waste water collection tank 11 is automatically pumped into the sewage purifier 21 by the water pump, and the powder feeder 22 is adjusted by frequency conversion in the sewage purifier. , and then carry out solid-liquid separation to obtain the first purified water and sludge, the first purified water flows into the clear water tank 3, and then the first purified water in the clear water tank 3 is automatically pumped into the ultrafiltration purification unit 4 by the water pump, and then The first purified water is filtered by the ultrafiltration purification unit 4, and the indicators such as COD, BOD, ammonia nitrogen, chromaticity, turbidity, and total phosphorus are reduced to obtain the second purified water, which meets the national farmland irrigation and rural sewage discharge standards. The purification process is not affected by the ambient temperature and water temperature. As long as the sewage water purifier is added to the sewage, the purification effect can be achieved, and it is not affected by the amount of water. When the total amount of sewage is small There are few sewage water purifiers. When the total amount of sewage is large, more sewage water purifiers can be used. This method can be popularized and used in the area north of the Yellow River.

And the system is simple to operate. It only needs to put sewage water purifying agent into the sewage purification unit to realize sewage purification, and simply train the villagers to start the operation. And according to the rural sewage collection and purification system for sewage treatment, the equipment can be flexibly configured according to the actual situation of sewage discharge in different villages in different places, as shown in Table 1.

Table 1 is the configuration table of the rural sewage collection and purification system.

The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and the technical equivalents thereof, they still fall within the protection scope of the present invention.

Claims (8)

1. A rural sewage collection, purification and utilization method is characterized by comprising the following steps:

collecting sewage, namely collecting domestic sewage into a wastewater collection unit through a collection pipeline;

the domestic sewage in the wastewater collection unit is conveyed into a sewage purification unit, the sewage purification unit is internally purified for the first step by adding a sewage purifying agent, the sewage purifying agent adsorbs and precipitates impurities in the domestic sewage, solid-liquid separation is carried out to obtain first purified water and sludge, and the first purified water is conveyed to a clean water tank;

performing ultrafiltration treatment, namely conveying the first purified water in the clean water tank to an ultrafiltration purification unit, wherein a filter membrane is arranged in the ultrafiltration purification unit, the first purified water is filtered into second purified water, and the second purified water is conveyed to an ultrafiltration clean water tank;

and (4) recycling the returned natural water system, and using the second purified water in the ultrafiltration clear water pond for greening, farmland and vegetable irrigation.

2. The rural sewage collection and purification method according to claim 1, wherein the delivering the domestic sewage in the wastewater collection unit into a sewage purification unit further comprises delivering the domestic sewage into the sewage purification unit by a water pump; the delivering the first purified water in the clean water basin to an ultrafiltration purification unit further comprises delivering the first purified water to the ultrafiltration purification unit by a water pump.

3. The rural sewage collection and purification method of claim 1, wherein the performing solid-liquid separation to obtain the first purified water and the sludge further comprises preparing the sludge into a fertilizer.

4. A rural sewage collecting and purifying system is characterized by comprising a wastewater collecting unit, a sewage purifying unit, a clean water tank, an ultrafiltration purifying unit and at least one ultrafiltration clean water tank which are sequentially connected by a water conveying pipeline;

the wastewater collection unit is used for collecting domestic sewage into the wastewater collection unit through a collection pipeline;

the sewage purification unit is used for conveying the domestic sewage in the wastewater collection unit into the sewage purification unit, a sewage purifying agent is added into the sewage purification unit for first-step purification and subsidiary precipitation, solid-liquid separation is carried out to obtain first purified water and sludge, and the first purified water is conveyed to the clean water tank;

the ultrafiltration purification unit is used for conveying the first purified water in the clean water tank to the ultrafiltration purification unit, a filter membrane is arranged in the ultrafiltration purification unit, the first purified water is filtered into second purified water, and the second purified water is conveyed to the ultrafiltration clean water tank.

5. The rural sewage collection and purification system of claim 4, wherein the wastewater collection unit comprises a wastewater collection tank and a liquid level monitor, the wastewater collection tank is used for containing the domestic sewage, the liquid level monitor is mounted on the wastewater collection tank, and the liquid level monitor is used for monitoring the liquid level depth in the wastewater collection tank.

6. The rural sewage collection and purification system of claim 5, further comprising a control unit connected between the liquid level monitor and the sewage purification unit for controlling the opening of the sewage purification unit.

7. The rural sewage collection and purification system of claim 4, wherein the sewage purification unit comprises a sewage purification machine and a powder feeding machine, the powder feeding machine is mounted at the upper end of the sewage purification machine, and the sewage purification agent is fed into the sewage purification unit.

8. The rural sewage collection and purification system of claim 4, wherein a water pump is arranged between the wastewater collection unit and the sewage purification unit, and between the clean water tank and the ultrafiltration purification unit.

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