CN114195338A - Sludge and excrement pretreatment process - Google Patents
Sludge and excrement pretreatment process Download PDFInfo
- Publication number
- CN114195338A CN114195338A CN202111320813.5A CN202111320813A CN114195338A CN 114195338 A CN114195338 A CN 114195338A CN 202111320813 A CN202111320813 A CN 202111320813A CN 114195338 A CN114195338 A CN 114195338A
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- sewage
- sludge
- primary
- discharging
- excrement
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- 239000010802 sludge Substances 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000008569 process Effects 0.000 title claims abstract description 24
- 239000010865 sewage Substances 0.000 claims abstract description 127
- 238000001914 filtration Methods 0.000 claims abstract description 46
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 45
- 238000007599 discharging Methods 0.000 claims abstract description 41
- 239000007787 solid Substances 0.000 claims abstract description 33
- 230000003750 conditioning effect Effects 0.000 claims abstract description 12
- 239000003814 drug Substances 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 235000013619 trace mineral Nutrition 0.000 claims abstract description 5
- 239000011573 trace mineral Substances 0.000 claims abstract description 5
- 238000007865 diluting Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 22
- 230000002550 fecal effect Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000002910 solid waste Substances 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 2
- 229940079593 drug Drugs 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a sludge and excrement pretreatment process, which comprises the following steps: discharging the excrement into a primary filtering device, performing primary filtering on the excrement to obtain primary sewage and solid garbage, and discharging the solid garbage into a garbage can for treatment; discharging the sludge into a homogenizing device; discharging the primary sewage into a homogenizing device, diluting the sludge, and stirring the primary sewage and the sludge to obtain secondary sewage; and discharging the secondary sewage into a conditioning device, and adding a medicament into the secondary sewage to enable trace elements in the sewage to meet the post-treatment requirement. The sludge and excrement pretreatment process disclosed by the invention has the advantages that the primary sewage filtered by the primary filtering device and the sludge are discharged into the homogenizing device to be mixed to obtain the secondary sewage, and the secondary sewage is discharged into the conditioning device to be added with medicines to meet the post-treatment requirement, so that the sludge and the excrement can be treated uniformly, the occupied space of equipment is reduced, and the cost is saved.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a sludge and excrement pretreatment process.
Background
With the pace of urban construction becoming faster, the population and day increase, the amount of excrement and sludge produced increases more and more, and the improvement of excrement disposal capability is imminent. In the related art, the equipment occupies a large space and is high in cost.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a sludge and excrement pretreatment process, which can treat the sludge and the excrement uniformly, and saves the occupied space of equipment and the cost of the equipment.
The invention provides a pretreatment process for sludge and fecal sewage, which comprises the following steps:
discharging the excrement into a primary filtering device, performing primary filtering on the excrement to obtain primary sewage and solid garbage, and discharging the solid garbage into a garbage can for treatment;
discharging the sludge into a homogenizing device;
discharging the primary sewage into a homogenizing device, diluting the sludge, and stirring the primary sewage and the sludge to obtain secondary sewage;
and discharging the secondary sewage into a conditioning device, and adding a medicament into the secondary sewage to enable trace elements in the sewage to meet the post-treatment requirement.
The sludge and manure pretreatment process provided by the embodiment of the invention at least has the following beneficial effects: the primary sewage filtered by the primary filtering device and the sludge are discharged into the homogenizing device to be mixed to obtain secondary sewage, and the secondary sewage is discharged into the conditioning device to be added with medicaments to meet the post-treatment requirement, so that the sludge and the excrement can be treated uniformly, the occupied space of equipment is reduced, and the cost is saved.
According to some embodiments of the invention, the fecal sewage is filtered using a centrifugal trash separator during the primary filtration.
According to some embodiments of the invention, the primary sewage is transported by a vacuum pump while being discharged into the homogenizing device.
According to some embodiments of the invention, before discharging the primary sewage into the homogenizing device, the method further comprises the following steps:
discharging the first-stage sewage into a cache device for transition;
and controlling the speed of the first-stage sewage discharged into the homogenizing device from the cache device according to the speed of the sludge discharged into the homogenizing device.
According to some embodiments of the invention, the buffer device is provided with two fourth chambers, and the two fourth chambers are alternately used for the first-stage sewage discharge and the first-stage sewage discharge when the first-stage sewage discharge is transited to the buffer device.
According to some embodiments of the present invention, the steps of controlling a flow of wastewater into and out of the buffer device are as follows:
detecting the liquid level of the chamber by using a liquid level detection device, closing a first valve at a discharge port and opening a second valve at a feed port when detecting that the liquid level of primary sewage in the fourth chamber is lower than a first set value, so that the primary sewage enters the chamber;
and when the liquid level detection device detects that the liquid level of the first-level sewage is higher than a second set value, the second valve is closed, the first valve is opened, so that the first-level sewage is discharged into the homogenizing device through the cache device, and the opening and closing degree of the second valve is controlled to control the outflow speed of the first-level sewage.
According to some embodiments of the invention, before discharging the secondary effluent into the conditioning device, the method further comprises the steps of:
and discharging the secondary sewage into a secondary filtering device, performing secondary filtering on the secondary sewage, separating solid garbage in sludge, filtering out solid garbage which is not filtered out by the primary filtering device in excrement, and discharging the filtered solid garbage into the secondary filtering device for treatment in the dustbin.
According to some embodiments of the invention, the secondary sewage is filtered by an internal diameter flow grid machine during secondary filtering.
According to some embodiments of the invention, the second stage sewage is delivered to the second stage filtering device by a non-clogging sludge pump.
According to some embodiments of the present invention, before discharging the solid garbage filtered by the primary filtering device and/or the secondary filtering device into a garbage bin, the method further comprises the following steps:
cleaning the solid garbage with clear water;
and (4) dehydrating the cleaned solid garbage.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a flow chart of a sludge and fecal sewage pretreatment process in the embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
FIG. 1 is a flow chart of a sludge and fecal sewage pretreatment process according to an embodiment of the present invention, and referring to FIG. 1, the sludge and fecal sewage pretreatment process provided by the present invention comprises the following steps:
the invention provides a pretreatment process for sludge and fecal sewage, which comprises the following steps:
s100, discharging the excrement into a primary filtering device, performing primary filtering on the excrement to obtain primary sewage and solid garbage, and discharging the solid garbage into a garbage can for treatment;
s200, discharging the sludge into a homogenizing device;
s300, discharging the primary sewage into a homogenizing device, diluting the sludge, and stirring the primary sewage and the sludge to obtain secondary sewage;
s400, discharging the secondary sewage into a conditioning device, and adding medicines into the secondary sewage through a medicine adding port of the homogenizing device to enable trace elements in the sewage to meet the post-treatment requirement.
Specifically, it can be understood that, there are solid waste and dirty sewage of excrement in the excrement, generally, need separate solid waste and dirty sewage of excrement and handle, therefore this embodiment, step S100, arrange the excrement and dirty into primary filter equipment and filter, primary filter equipment is provided with first cavity and second cavity, and the excrement that advances is located first cavity, makes the dirty solid-liquid separation of excrement, and the sewage of separation is one-level sewage to automatic discharge primary filter equipment' S second cavity. The excrement can be collected by the excrement suction truck and then uniformly discharged into the primary filter device, and the excrement can be directly discharged into the primary filter device by laying a pipeline at the bottom of the ground. The homogenizing device is used for mixing the sludge and the primary sewage, the homogenizing device is provided with a third chamber, the sludge is discharged into the third chamber of the homogenizing device through the sludge suction vehicle, and the primary sewage is discharged into the sewage discharge chamber to dilute the sludge, so that secondary sewage is obtained. In addition, the amount of the primary sewage discharged into the third chamber needs to be controlled according to the water content in the sludge, so that the water content of the secondary sewage meets the requirement of post-treatment. When the device works, the sludge and the primary sewage are stirred by the stirring mechanism in the homogenizing device, so that the sludge is prevented from depositing at the bottom of the third chamber and being incapable of being treated, and excessive sludge is prevented from depositing at the bottom of the third chamber and easily causing pipeline blockage. The secondary sewage is discharged into the conditioning device, and medicines (such as nitrified salt and the like) are added through a medicine adding port on the conditioning device, so that the trace elements in the secondary sewage meet the post-treatment requirement. It can be understood that the one-level sewage that this embodiment filters out the primary filter device and mud is arranged into the homogenization device and is mixed and obtain second grade sewage, and then with second grade sewage arrange into the conditioning device and add the medicine in order to satisfy the aftertreatment demand, make mud and excrement dirty can unify and handle, reduce equipment occupation space, save the cost.
On the basis of the embodiment, when the first-stage filtration is carried out on the excrement, the centrifugal garbage separator is used for carrying out the first-stage filtration on the excrement. Specifically, excrement is discharged into a first cavity of a filter barrel, centrifugal motion is carried out on the excrement in the first cavity through rotation of the filter barrel, solid-liquid separation speed of the excrement is accelerated, and liquid in the excrement enters a second cavity through filter holes in the filter barrel.
In some embodiments, the primary wastewater is delivered into the homogenizing device by a vacuum pump. Specifically, the vacuum water pump of the vacuum pump is used for rapidly conveying the first-stage sewage in the second chamber of the first-stage filtering device into the third chamber of the homogenizing device, and the first-stage sewage conveying speed is improved. In addition, utilize the vacuum pump to pump the one-level sewage in the second chamber to the third chamber, form the mode of vacuum suction, the dirty filter speed of excrement can be accelerated to the receiving mode of vacuum suction formula, improves the dirty filtration efficiency of excrement, and the clean excrement that contains of solid waste after the filtration is few.
In some embodiments, before discharging the primary wastewater into the homogenizing device, the method further comprises the following steps:
the first-stage sewage is discharged into a cache device for transition;
and controlling the speed of the first-stage sewage discharged into the homogenizing device from the cache device according to the speed of the sludge discharged into the homogenizing device.
In particular, it will be appreciated that, when the vacuum pump is in operation, it is necessary to draw air out of the third chamber of the homogenisation device in order to create a negative pressure in the third chamber. Therefore, when the primary sewage enters the third chamber, the sludge inlet needs to be closed, so that the primary sewage and the sludge cannot be discharged into the third chamber at the same time. In order to accelerate the working efficiency, a buffer device is additionally arranged between the vacuum pump and the homogenizing device for transition, and is provided with a fourth cavity. When the sludge suction vehicle reaches the position of the homogenizing device, the sludge is discharged into the third chamber, and meanwhile, the first-stage sewage in the caching device is discharged into the third chamber, so that the sludge and the first-stage sewage can be simultaneously discharged into the third chamber. And the speed of the first-level sewage entering the homogenizing device from the caching device is controlled by the caching device so as to adapt to the speed of the sludge discharged into the third chamber.
On the basis of the embodiment, when the first-stage sewage is discharged into the buffer device for transition, the buffer device with two fourth chambers is adopted, and the two fourth chambers are alternately used for discharging the first-stage sewage.
Specifically, adopt the buffer memory device who has two fourth cavities, two fourth cavities take turns respectively and are used for the row of one-level sewage to advance and discharge, and one of them fourth cavity is used for advancing the third cavity with one-level sewage, and another fourth cavity is used for accepting the one-level sewage that the vacuum pump pumped come, and whole process can continuous work, and one-level sewage can be continuous and the even device of discharging simultaneously with mud, further improves work efficiency. In addition, two fourth chambers are adopted for alternately discharging the primary sewage, and whether the primary sewage stored in a single fourth chamber can dilute one-vehicle sludge or not does not need to be considered. Therefore, the fourth chamber with smaller volume can be adopted, the whole volume of the buffer device is reduced, and the space occupied by equipment is reduced.
In some embodiments, the steps of controlling the flow of wastewater into and out of the buffer device are as follows: detecting the liquid level of the fourth chamber by using a liquid level detection device, closing a first valve at a discharge port and opening a second valve at a corresponding feed port when detecting that the liquid level of the primary sewage in the fourth chamber is lower than a first set value, so that the primary sewage enters the fourth chamber;
and when the liquid level of the first-stage sewage is higher than a second set value, closing the second valve, opening the first valve, discharging the first-stage sewage into the third chamber from the fourth chamber, and controlling the opening and closing degree of the first valve to control the outflow speed of the first-stage sewage.
Specifically, the liquid level of the fourth chamber is detected by adopting a liquid level detection device, and detection points are arranged at the bottom and the top of the fourth chamber and respectively correspond to a first set value and a second set value of the detection device. When the liquid level detection device detects that the liquid level is lower than a first set value, the first valve is closed through automatic control of the upper computer, and the second valve is opened, so that the first-stage sewage can enter the fourth chamber. When the liquid level is detected to be higher than the second set value, the second valve is automatically controlled to be closed through the upper computer, so that the primary sewage enters the third chamber of the homogenizing device. In addition, the opening and closing degree of the first valve can be controlled through the upper computer so as to control the speed of the primary sewage flowing into the third chamber.
In some embodiments, before discharging the secondary wastewater into the conditioning device, the method further comprises the following steps:
and discharging the secondary sewage into a secondary filtering device, performing secondary filtering on the secondary sewage, separating solid garbage in the sludge, filtering solid garbage which is not filtered by the primary filtering device in the excrement, and discharging the filtered solid garbage into a garbage can for treatment.
On the basis of the embodiment, when the secondary sewage is subjected to secondary filtration, the secondary sewage is filtered by using the inner diameter flow grating machine. Specifically, the filtering holes of the internal diameter flow grating machine are small, so that fine garbage such as fibers and hairs in the secondary sewage can be separated.
On the basis of the embodiment, when the second-stage sewage is discharged into the second-stage filtering device, the second-stage sewage is conveyed by using the non-blocking sludge pump, so that the second-stage sewage can be effectively prevented from being blocked in the conveying process.
On the basis of the above embodiment, before the solid waste filtered by the primary filtering device is discharged into the waste bin, the method further comprises the following steps:
cleaning the solid garbage with clear water;
and (4) dehydrating the cleaned solid garbage.
Or before the solid garbage filtered by the secondary filtering device is discharged into a garbage can, the method further comprises the following steps:
cleaning the solid garbage with clear water;
and (4) dehydrating the cleaned solid garbage.
Or before the solid garbage filtered by the primary filtering device and the secondary filtering device is discharged into the garbage can, the method further comprises the following steps:
cleaning the solid garbage with clear water;
and (4) dehydrating the cleaned solid garbage.
Specifically, the solid garbage after filtration is cleaned by clear water to remove excrement residues or soil adhered with small particles, which is beneficial to the treatment of the solid garbage in the later period. In addition, the odor on the solid garbage can be washed away. The dehydration is required to facilitate the subsequent transportation and incineration of the solid waste.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. The sludge and excrement pretreatment process is characterized by comprising the following steps:
discharging the excrement into a primary filtering device, performing primary filtering on the excrement to obtain primary sewage and solid garbage, and discharging the solid garbage into a garbage can for treatment;
discharging the sludge into a homogenizing device;
discharging the primary sewage into the homogenizing device, diluting the sludge, and stirring the primary sewage and the sludge to obtain secondary sewage;
and discharging the secondary sewage into a conditioning device, and adding a medicament into the secondary sewage to enable trace elements in the sewage to meet the post-treatment requirement.
2. The process of claim 1, wherein the first stage filtration is performed by a centrifugal garbage separator.
3. The pretreatment process of sludge and fecal sewage according to claim 1, wherein the primary sewage is transported by a vacuum pump while being discharged into said homogenizing device.
4. The pretreatment process of sludge and fecal sewage according to claim 1, further comprising the steps of before discharging the primary sewage into said homogenizing device:
discharging the first-stage sewage into a cache device for transition;
and controlling the speed of the first-stage sewage discharged into the homogenizing device from the cache device according to the speed of the sludge discharged into the homogenizing device.
5. The process of pretreating sludge and fecal sewage according to claim 4, wherein said buffer device having two fourth chambers is used in transition of discharging the first stage sewage into said buffer device, and said two fourth chambers are alternately used for the discharge and the intake of the first stage sewage.
6. The process of claim 5, wherein the step of controlling the discharge of wastewater into and out of the buffer device comprises:
detecting the liquid level of the chamber by using a liquid level detection device, closing a first valve at a discharge port and opening a second valve at a feed port when detecting that the liquid level of primary sewage in the fourth chamber is lower than a first set value, so that the primary sewage enters the fourth chamber;
and when the liquid level detection device detects that the liquid level of the first-level sewage is higher than a second set value, the second valve is closed, the first valve is opened, so that the first-level sewage is discharged into the homogenizing device through the cache device, and the opening and closing degree of the second valve is controlled to control the outflow speed of the first-level sewage.
7. The process of pretreating sludge and fecal sewage according to claim 1, further comprising the steps of, before discharging the secondary sewage into said conditioning device:
and discharging the secondary sewage into a secondary filtering device, performing secondary filtering on the secondary sewage, separating solid garbage in sludge, filtering out solid garbage which is not filtered out by the primary filtering device in excrement, and discharging the filtered solid garbage into the secondary filtering device for treatment in the dustbin.
8. The process of claim 7, wherein the secondary sewage is filtered by an internal diameter flow grid machine during the secondary filtration.
9. The process of pretreating sludge and fecal sewage according to claim 7, wherein the secondary sewage is delivered by a non-clogging sludge pump while being discharged into the secondary filtering device.
10. The process of claim 7, wherein the step of discharging the solid waste filtered by the primary and/or secondary filtering device into a waste bin further comprises:
cleaning the solid garbage with clear water;
and (4) dehydrating the cleaned solid garbage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111320813.5A CN114195338A (en) | 2021-11-09 | 2021-11-09 | Sludge and excrement pretreatment process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111320813.5A CN114195338A (en) | 2021-11-09 | 2021-11-09 | Sludge and excrement pretreatment process |
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| CN114195338A true CN114195338A (en) | 2022-03-18 |
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| JP2006078111A (en) * | 2004-09-10 | 2006-03-23 | Nippon Itomic Co Ltd | Large-capacity hot water supply system and its operation method |
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2021
- 2021-11-09 CN CN202111320813.5A patent/CN114195338A/en active Pending
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