CN114605037A - Rural buck cyclic utilization integration processing system - Google Patents
Rural buck cyclic utilization integration processing system Download PDFInfo
- Publication number
- CN114605037A CN114605037A CN202210292810.3A CN202210292810A CN114605037A CN 114605037 A CN114605037 A CN 114605037A CN 202210292810 A CN202210292810 A CN 202210292810A CN 114605037 A CN114605037 A CN 114605037A
- Authority
- CN
- China
- Prior art keywords
- tank
- water
- effect filter
- strengthening pretreatment
- drop
- Prior art date
- 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.)
- Granted
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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
-
- 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
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- 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
- C02F3/30—Aerobic and anaerobic processes
Abstract
The invention discloses a rural grey water recycling integrated treatment system, which comprises a strengthening pretreatment tank, a drop basin, a multi-effect filter tank, a disinfection tank, a water inlet pipe, a water outlet pipe and a gas distribution pipe, wherein the strengthening pretreatment tank is connected with the drop basin; wherein, the strengthening pretreatment tank is cylindrical; the water dropping pool is arranged in a closed ring shape along the wall of the strengthening pretreatment pool; the multi-effect filter tank is arranged below the drop tank along the wall of the strengthening pretreatment tank in a semi-annular shape; the disinfection tank is arranged below the drop tank along the wall of the strengthening pretreatment tank in a semi-annular shape and is arranged in a closed annular shape with the multi-effect filter tank; the water inlet pipe is arranged at the bottom of the strengthening pretreatment tank; the water outlet pipe is arranged at the bottom of the disinfection tank; the air distribution pipe is arranged in the middle of the multi-effect filter tank in a semi-annular shape along the multi-effect filter tank, and two ports of the air distribution pipe are respectively communicated with the atmosphere of the disinfection tank. The filter tank is of an annular structure, so that the filter tank can distribute water uniformly without dead angles; the system has no power consumption, simple maintenance and management, convenient carrying and installation and higher environmental and economic benefits due to the adoption of an integrated structural form.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a rural grey water recycling integrated treatment system.
Background
With the increasing importance of the country on the treatment of rural domestic sewage, China makes great progress in the aspects of research and development of rural domestic sewage treatment technology, standard policy formulation and project implementation, but most of China mainly takes standard discharge as a main part. Experience shows that the pure pursuit of standard emission does not meet the actual situation of rural areas.
In the aspect of treatment mode, the current rural domestic sewage is mainly treated by mixing black water and grey water. The rural domestic grey water is low-concentration domestic sewage generated by rural resident families in daily cleaning, kitchen cleaning, bathing, clothes washing and the like. In the whole treatment process, high-concentration water such as human excrement and urine is diluted by grey water of low-concentration water such as kitchen water, bath washing water and the like, and the grey water with low concentration of the original pollutants is polluted, so that the treatment difficulty is increased, and the cost is increased.
In recent years, the concepts of sewage quality-based treatment and resource utilization are continuously deepened, and in areas meeting conditions, the cyclic utilization of water resources can be better realized by independently collecting and treating the grey water with large production quantity, the cost is reduced, and the practical requirements of treatment and disposal of domestic sewage in rural areas in China can be met.
Existing grey water treatment technologies include physical treatment technologies, chemical treatment technologies, biological treatment technologies, and ecological treatment technologies. Wherein, the physical treatment mainly adopts a sand filter and a membrane filtration technology; the chemical treatment mainly adopts flocculation and precipitation technology; the biological treatment mainly adopts a biomembrane method, such as a contact oxidation method, an aeration biological filter, an MBBR and other technologies; the ecological treatment mainly adopts the modes of artificial wetland, ecological filter, soil infiltration and the like.
However, the existing grey water treatment technology has the following problems:
1. physical treatment technology: the simple sand filter treatment technology is easy to cause filter blockage, and needs regular back washing, so that the operation and maintenance cost is high; although the membrane filtration technology has good treatment effect, the one-time investment and operation and maintenance cost is high, the requirement on the level of operation and maintenance personnel is relatively high, and the membrane filtration technology is difficult to operate for a long time in rural areas where the economy is not reached.
2. Chemical treatment technology: the pollutants are removed mainly by adding the medicament, the operation cost is high, the amount of chemical sludge generated in the operation process is large, the treatment is difficult, and the secondary pollution is easily caused.
3. The biological treatment technology comprises the following steps: the requirement on aeration quantity is higher, a biological film is not easily formed on low-concentration domestic sewage, active organisms are difficult to artificially control, and the flexibility of operation and maintenance is poor.
4. The ecological treatment technology comprises the following steps: the method has the advantages of low construction, operation and maintenance cost, relatively simple maintenance and management, suitability for the characteristics of rural sewage treatment in China, and capability of achieving a better treatment effect by being combined with a biological treatment technology in practical engineering, but the ecological treatment technology has low pollutant treatment load and large occupied area, and is limited to rural areas with short land.
5. At present, most of rural grey water treatment modes in China are discharged after treatment or used for irrigation, and due to the seasonality of irrigation, the problems of water resource waste, secondary pollution to the surrounding environment and the like exist in non-irrigation seasons.
6. At present, the rural domestic sewage treatment technology basically has no disinfection link, and basically does not monitor the escherichia coli condition of effluent, so that potential safety risk exists from the recycling perspective.
7. The existing rural domestic sewage treatment equipment mainly discharges the sewage up to the standard and efficiently removes pollutants, and for most rural areas with recycling requirements, the problem of energy waste is caused and the requirement of low-carbon sewage treatment is not met.
Therefore, how to develop a rural grey water recycling integrated treatment system which is low in operation cost, simple in maintenance and management and accords with the characteristics of rural areas in China is a problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
In view of the above, the invention aims to provide an integrated treatment system for recycling rural grey water, and the treated sewage is mainly used for farmland and green land irrigation and living miscellaneous use.
In order to achieve the purpose, the invention adopts the following technical scheme:
an integrated treatment system for recycling rural grey water comprises a strengthening pretreatment tank, a drop tank, a multi-effect filter tank, a disinfection tank, a water inlet pipe, a water outlet pipe and a gas distribution pipe; wherein the content of the first and second substances,
the strengthening pretreatment pool is cylindrical;
the water dropping pool is arranged in a closed ring shape along the wall of the strengthening pretreatment pool, and the highest position of the water dropping pool is lower than the strengthening pretreatment pool;
the multi-effect filter tank is arranged below the drop tank along the wall of the strengthening pretreatment tank in a semi-annular shape, and the width of the multi-effect filter tank is twice of that of the drop tank;
the disinfection tank is arranged below the drop tank along the wall of the strengthening pretreatment tank in a semi-annular manner, and is arranged in a closed annular manner with the multi-effect filter tank, and the height of the wall of the drop tank above the disinfection tank is higher than that of the strengthening pretreatment tank; the slow-release chlorine tablets are arranged in the disinfection tank;
the water inlet pipe is arranged at the bottom of the strengthening pretreatment tank;
the water outlet pipe is arranged at the bottom of the disinfection tank;
the air distribution pipe is arranged in the middle of the multi-effect filter tank in a semi-annular shape along the multi-effect filter tank, and two ports of the air distribution pipe are respectively communicated with the atmosphere of the disinfection tank.
The invention has the beneficial effects that:
1. the invention adopts a cylindrical tank body through ingenious structural design, adopts a cylindrical double-layer structure, optimally integrates a strengthening pretreatment tank, a drop basin, a multi-effect filter tank and a disinfection tank, and improves the reoxygenation capability of the system by assisting a wind distribution pipe in a natural reoxygenation form in a packing layer of the multi-effect filter tank, thereby forming an integrated treatment system which is convenient to install and small in occupied area.
2. The filter tank is of an annular structure, so that uniform water distribution of the filter tank can be realized, and no dead angle exists; the system has no power consumption, simple maintenance and management, convenient carrying and installation and higher environmental and economic benefits due to the adoption of an integrated structural form.
3. The integrated treatment system can be used for industrial production, greatly shortens the construction period, has the characteristics of low construction and operation cost, convenient installation, simple maintenance and management and small occupied area, and is suitable for rural areas with deficient water resources and scattered living.
4. The invention adopts the processes of strengthening pretreatment, unpowered oxygenation, multi-effect filter and disinfection to treat the grey water in the rural domestic sewage, the effluent meets the requirements of farmland and greenbelt irrigation and miscellaneous living, the system has no power consumption, the recycling of rural domestic sewage resources is realized, and the pollution reduction and carbon reduction of the sewage treatment industry are promoted.
5. The sewage enters from the bottom of the central layer and flows from the upper part of the central layer to the outer layer through water dropping, so that unpowered oxygenation is realized, and the operation cost is low.
6. The drop basin is the annular setting, has two aspects effects: firstly, drop oxygenation is carried out, water uniformly overflows from the periphery of the strengthening pretreatment pool and flows into and drops to a drop pool along the pool wall, and during the dropping process, on one hand, drop water flow is in a water curtain shape, so that the contact area of the water flow and air is increased, and the reoxygenation effect is increased; on the other hand, oxygen is dissolved into the water flow in the falling process of the water flow, and finally, water splashes and carries the oxygen into the water flow at the moment of falling into the water drop pool; and secondly, the uniform water distribution of the multi-effect filter is ensured, under the condition that the single wide water quantity of the outlet water of the strengthening pretreatment tank is smaller, the water flow flows along the tank wall, the uniform water distribution of the multi-effect filter is not facilitated, and the outlet water of the drop tank is ensured to fall into a water distribution channel in the middle of the multi-effect filter by reasonably designing the width of the drop tank. The wall of the part of the water dropping pool on the disinfection pool is made to be ultrahigh, so that the discharged water is ensured not to drop into the disinfection pool.
7. The effluent of the multi-effect filter tank automatically flows into the disinfection tank, and the water level of the disinfection tank is not higher than the height of the filler at the bottom layer of the filler of the multi-effect filter tank, so that the influence on the quality of the effluent due to the anaerobic reaction at the bottom of the multi-effect filter tank is avoided. Escherichia coli is a strict control index of the requirement of the water for miscellaneous use, the slow-release chlorine tablets are arranged in the disinfection tank according to the water outlet requirement, the contact time of at least 15min is ensured, the function is to remove the Escherichia coli in sewage, and the water quality of the outlet water meets the requirements of farmland and greenbelt irrigation and miscellaneous use in life.
Further, above-mentioned rural buck cyclic utilization integration processing system still includes mount, elastic filler, play weir, reinforcement pretreatment pond top cap and reinforcement pretreatment pond mud pipe, and wherein, the mount sets up in the inside in reinforcement pretreatment pond, and on the elastic filler was fixed in the mount, go out the weir set up around reinforcement pretreatment pond and with the drop pond communicates with each other, reinforcement pretreatment pond top cap set up in the top in reinforcement pretreatment pond, and reinforcement pretreatment pond mud pipe sets up in the bottom in reinforcement pretreatment pond.
The reinforced pretreatment tank has the advantages that the reinforced pretreatment tank is provided with the elastic filler, so that the specific surface area is large and microorganisms are easy to attach and grow; the peripheral water outlet structure design can realize high-efficiency drop aeration; sludge in the strengthening pretreatment tank is periodically pumped and transported outward through a strengthening pretreatment tank sludge discharge pipe and a mobile pump.
The strengthening pretreatment unit of the invention is used as a pretreatment unit of a subsequent multi-effect filter, has longer retention time and has the following main functions: firstly, the sedimentation effect is realized, suspended matters are settled and enter the bottom of the filter by reducing the ascending flow velocity of sewage, the SS concentration of the effluent is reduced, and the subsequent multi-effect filter is prevented from being blocked; secondly, the sewage has the impact load resistance effect, and the rural domestic sewage is characterized in that the water quality and the water quantity have large fluctuation, and the impact load resistance of the system is improved through the long-time strengthening pretreatment; thirdly, degrading organic matters, reducing the concentration of the organic matters in the sewage through the treatment of the strengthening pretreatment tank, and reducing the pollutant load of the subsequent multi-effect filter tank; and fourthly, providing conditions for the subsequent drop aeration.
Furthermore, the rural grey water recycling integrated treatment system also comprises a water distribution channel, an adjustable fixing rod and a detachable bolt, wherein the water distribution channel is annularly arranged at the middle position above the multi-effect filter tank through the adjustable fixing rod; furthermore, the water distribution channel also comprises detachable bolts which are detachably arranged and connected through the detachable bolts.
The water outlet of the strengthening pretreatment tank is in the form of an overflow weir, flows into the water drop tank along the wall of the tank, and then falls into the water distribution channel through the water drop tank. The water drop pool and the water distribution channel are of annular structures, water outlet of the water distribution channel is of a triangular weir form, the water distribution channel can be disassembled in a segmented mode, and the water drop pool is connected with the pool wall of the multi-effect filter pool through an adjustable fixing rod, so that the level of the water distribution channel is guaranteed. The water distribution channel adopts the detachable installation purpose to ensure that the multi-effect filter tank is convenient to overhaul. The main functions of the water distribution ditch have three aspects: the water distribution device has the advantages that firstly, water is distributed, the water discharged from the water drop tank falls into the water distribution channel, water is uniformly discharged from two sides of the water distribution channel to the multi-effect filter pool, and the uniform water distribution is ensured; secondly, the filler on the surface of the multi-effect filter tank is prevented from being impacted by water drops, so that the filler surface is uneven and the water distribution is not uniform; thirdly, the water distribution channel keeps a certain water level, and the water drop aeration effect is better.
Further, the multi-effect filter tank is sequentially provided with a protective layer, a high-efficiency treatment layer, a transition layer and a water outlet bearing layer from top to bottom.
The further technical scheme has the beneficial effects that physical and biological reactions occur in the multi-effect filter, the physical reactions mainly include the filtering, intercepting and adsorbing effects of the filler, the biological reactions mainly include a biological film formed on the surface of the filler, pollutants are biologically degraded by aerobic microbial flora and effectively removed, and ammonia nitrogen is converted into nitrate nitrogen through the nitrification of nitrifying bacteria under aerobic conditions and removed. The multi-effect filter tank mainly has the functions of removing organic matters and ammonia nitrogen, and optimizes the growth environment of microorganisms by scientifically proportioning the proportion of natural river sand, zeolite and limestone.
Further, the fillers of the protective layer and the transition layer are all natural river sand; further, the natural river sand has a particle size of 0.5 to 1.6 mm.
The beneficial effect who adopts above-mentioned further technical scheme lies in, and the effect of protective layer mainly is the protection high efficiency processing layer, avoids the filler loss on high efficiency processing layer in the process of routine maintenance, influences the treatment effect. The protective layer filler is single filler natural river sand, is convenient to replace and also plays a role in primary filtration; the transition layer has the main function of being effectively connected with the effluent supporting layer, preventing the filler of the high-efficiency treatment layer from losing and playing a role in further filtering.
Further, the filler of the high-efficiency treatment layer is at least one of zeolite, limestone and natural river sand; further, the particle size of the zeolite, limestone and natural river sand is 0.8-4 mm.
The further technical scheme has the beneficial effects that the filler of the high-efficiency treatment layer is economical and easy to obtain and is mixed according to different grades.
Further, the filler of the effluent supporting layer is cobblestones; furthermore, the particle size of the cobblestones is 2-32 mm.
The beneficial effect of adopting the further technical scheme is that the main function of the water outlet supporting layer is to support the whole multi-effect filter system filler and prevent the filler from flowing away from the system along with water flow.
Further, the integrated rural grey water recycling treatment system also comprises an air cap, wherein the air cap is arranged at the port of the air distribution pipe, and a height difference of 30-80cm is formed between the two ends of the air distribution pipe; furthermore, the air distribution pipe is provided with vent holes in a direction of 45 degrees with the water flow, and the aperture of the vent holes is smaller than the minimum particle size of the filler of the high-efficiency treatment layer.
The further technical scheme has the beneficial effects that the air distribution pipe can provide sufficient oxygen for the multi-effect filter tank and promote the efficient removal of organic matters and ammonia nitrogen. The air distribution pipe has the main functions of creating a better aerobic environment for the multi-effect filter under the condition of low activity of flora in winter, promoting the efficient removal of organic matters and ammonia nitrogen and ensuring the requirement of the quality of reuse water.
According to the technical scheme, compared with the prior art, the rural grey water recycling integrated treatment system provided by the invention solves the problem of resource utilization of grey water in rural domestic sewage according to the concept of quality-based treatment, and simultaneously forms integrated equipment, so that the occupied area is reduced, the energy consumption is avoided, the operation and maintenance are simple, and thought and technical support are provided for rural domestic sewage treatment. The concrete aspects are as follows:
1. the invention optimally integrates the biological and ecological combined process, and forms integrated equipment for treating the rural domestic grey water through ingenious design. The cylindrical double-layer structure is adopted, the function distinction is reasonable, the central strengthening pretreatment tank (the sedimentation zone and the anaerobic zone) and the peripheral multi-effect filter tank (the aerobic zone and the anoxic zone) are arranged, and meanwhile, the water drop tank (the water drop zone) and the disinfection tank (the disinfection zone) are skillfully arranged in the structure, so that the structure is compact, and the occupied area is small.
2. The system of the invention has no power consumption, and the effluent meets the requirements of farmland and green land irrigation and living miscellaneous use. The system oxygenation adopts a drop aeration and filter air distribution pipe natural draft mode, the drop aeration utilizes sewage to fall in a water curtain shape, the contact area of the sewage and air is increased, and meanwhile, the sewage falls into a water distribution channel to splash water for further oxygenation, so that the oxygenation effect is enhanced. The air distribution pipe is arranged in the multi-effect filter tank, the air cap is arranged at the communication position of the air distribution pipe and the atmosphere, the turbine rotation of the fan and the air circulation inside and outside the filter tank are pushed by utilizing the natural wind speed, and under the condition that the microbial activity is reduced in winter, a good aerobic environment is kept in the multi-effect filter tank, so that the multi-effect filter tank has a good organic matter and ammonia nitrogen removing effect, and the normal effluent quality is maintained. The retention time and the surface area of the pretreatment tank are strengthened through reasonable design, the lower ascending flow rate of the sewage is kept, the sedimentation effect of suspended matters is ensured under the condition that no medicament is added, and the problem of blockage of a follow-up multi-effect filter tank is solved.
3. The invention realizes unpowered uniform water distribution by gravity water drop and reasonable arrangement of a water drop pool size structure and a water distribution channel form. The optimized and integrated multiple-effect filter tank is distributed around the strengthening pretreatment tank in an annular shape, the diameter of the annular is smaller than that of the traditional square filter tank, and the multiple-effect filter tank has no dead angle, so that uniform water distribution is easier to realize. In addition, the water distribution channel with adjustable level is designed and is positioned in the middle of the filter, water from the water drop tank falls into the water distribution channel and then evenly overflows from the two sides of the water distribution channel, and the water distribution is further ensured to be even.
4. The invention optimizes the filler gradation and ensures that the effluent meets the requirements of farmland, green land irrigation and living miscellaneous use. Because the rural domestic grey water pollutant concentration is low, the effluent has low requirement on pollutants, and no requirement on nitrogen and phosphorus is generated under the condition of no external discharge, the cheap and reliable traditional filler is selected, the optimal effect is achieved by optimizing the size grading and the proportion of the filler, the cost is saved, and the treatment effects of organic matters, ammonia nitrogen, turbidity, chromaticity, escherichia coli and the like are also ensured.
5. The invention is an integrated device, is flexible in installation and application, can realize stable operation in cold areas by adopting a form of burying or additionally arranging a heat insulation shed, can be combined with a vegetable greenhouse for construction, realizes the combination of rural domestic sewage treatment and planting industry, and realizes the resource utilization of sewage on site.
6. The system has simple operation, maintenance and management, low level requirement on operation and maintenance personnel, no special operation and only needs to regularly suck and discharge the sludge in the strengthening pretreatment tank, thereby further ensuring the long-term operation of the sewage treatment facility.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a cross-sectional view of a rural grey water recycling integrated treatment system provided by the present invention;
FIG. 2 is a plan view of the integrated rural grey water recycling treatment system provided by the present invention;
FIG. 3 is a plan view of a water distribution channel according to the present invention;
FIG. 4 is a floor plan of a pipeline provided by the present invention;
the system comprises a strengthening pretreatment tank, a 2-water drop tank, a 3-multi-effect filter tank, a 4-disinfection tank, a 5-water inlet pipe, a 6-water outlet pipe, a 7-fixing frame, 8-elastic filler, 9-water outlet weir, 10-strengthening pretreatment tank top cover, 11-strengthening pretreatment tank mud pipe, 12-water distribution channel, 13-adjustable fixing rod, 14-detachable bolt, 15-protective layer, 16-high-efficiency treatment layer, 17-transition layer, 18-water outlet supporting layer, 19-air distribution pipe and 20-air cap.
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 drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The embodiment of the invention discloses a rural grey water recycling integrated treatment system, which comprises a strengthening pretreatment tank 1, a drop tank 2, a multi-effect filter tank 3, a disinfection tank 4, a water inlet pipe 5, a water outlet pipe 6 and a gas distribution pipe 19, wherein the drop tank 2 is connected with the strengthening pretreatment tank 1; wherein, the strengthening pretreatment tank 1 is cylindrical; the water dropping tank 2 is arranged in a closed ring shape along the wall of the strengthening pretreatment tank 1, and the highest position of the water dropping tank 2 is lower than the strengthening pretreatment tank 1; the multi-effect filter 3 is arranged below the drop basin 2 in a semi-annular shape along the wall of the strengthening pretreatment pool 1, and the width of the multi-effect filter 3 is twice of that of the drop basin 2; the disinfection tank 4 is arranged below the drop tank 2 in a semi-annular shape along the wall of the strengthening pretreatment tank 1 and is arranged in a closed annular shape with the multi-effect filter tank 3, the height of the wall of the drop tank 2 above the disinfection tank 4 is higher than that of the strengthening pretreatment tank 1, and slow-release chlorine tablets are arranged in the disinfection tank; the water inlet pipe 5 is arranged at the bottom of the strengthening pretreatment tank 1; the water outlet pipe 6 is arranged at the bottom of the disinfection tank 4; the air distribution pipe 19 is arranged in the middle of the multi-effect filter 3 along the multi-effect filter in a semi-annular shape, and two ports of the air distribution pipe are respectively communicated with the atmosphere of the disinfection tank 4.
In one embodiment, the device further comprises a fixing frame 7, an elastic filler 8, an effluent weir 9, an enhanced pretreatment tank top cover 10 and an enhanced pretreatment tank mud pipe 11, wherein the fixing frame 7 is arranged inside the enhanced pretreatment tank 1, the elastic filler 8 is fixed on the fixing frame 7, the effluent weir 9 is arranged around the enhanced pretreatment tank 1 and is communicated with the drop tank 2, the enhanced pretreatment tank top cover 10 is arranged at the top of the enhanced pretreatment tank 1, and the enhanced pretreatment tank mud pipe 11 is arranged at the bottom of the enhanced pretreatment tank 1. The elastic filler 8 has large specific surface area and is easy to adhere and grow microorganisms; the peripheral water outlet structure design can realize high-efficiency drop aeration; the sludge in the strengthening pretreatment tank 1 is periodically pumped and transported out for treatment through a strengthening pretreatment tank sludge discharge pipe 11 and a mobile pump.
The strengthening pretreatment unit of the invention is used as a pretreatment unit of a subsequent multi-effect filter 3, has longer retention time and has the following main functions: firstly, the sedimentation effect is realized, suspended matters are settled and enter the bottom of the filter by reducing the rising flow rate of sewage, the SS concentration of the effluent is reduced, and the subsequent multi-effect filter 3 is prevented from being blocked; secondly, the system has impact load resistance, and rural domestic sewage is characterized in that the water quality and water quantity fluctuation is large, and the impact load resistance of the system is improved through long-time strengthening pretreatment; thirdly, degrading organic matters, reducing the concentration of the organic matters in the sewage through the treatment of the strengthening pretreatment tank 1, and reducing the pollutant load of the subsequent multi-effect filter tank 3; and fourthly, providing conditions for the subsequent drop aeration.
In one embodiment, as shown in fig. 3, the multi-effect filter further comprises a water distribution channel 12, an adjustable fixing rod 13 and a detachable bolt 14, wherein the water distribution channel 12 is annularly arranged in the middle position above the multi-effect filter 3 through the adjustable fixing rod 13, is detachably mounted, and is connected through the detachable bolt 14. The water outlet of the strengthening pretreatment pool 1 is in the form of an overflow weir, flows into the water drop pool 2 along the pool wall, and then falls into the water distribution channel 12 through the water drop pool 2. The water drop tank 2 and the water distribution channel 12 both adopt an annular structure, the water outlet of the water distribution channel 12 adopts a triangular weir form, the sections can be detached, and the water distribution channel 12 is ensured to be horizontal by connecting the adjustable fixing rod 13 with the tank wall of the multi-effect filter tank 3. The water distribution channel 12 is detachably mounted so as to ensure that the multi-effect filter 3 is convenient to overhaul. The main functions of the distribution canal 12 are three: firstly, water is distributed, the water discharged from the water drop tank 2 falls into the water distribution channel 12, and water is uniformly discharged from the two sides of the water distribution channel 12 to the multi-effect filter 3, so that the uniform water distribution is ensured; secondly, the filler on the surface of the multi-effect filter 3 is prevented from being impacted by water drop, so that the filler surface is uneven and the water distribution is not uniform; thirdly, the water distribution channel 12 keeps a certain water level, and the water drop aeration effect is better.
In one embodiment, the multi-effect filter 3 is provided with a protective layer 15, a high-efficiency treatment layer 16, a transition layer 17 and an effluent supporting layer 18 from top to bottom in sequence. Physical and biological reactions occur in the multi-effect filter 3, the physical reactions mainly include filtering, interception and adsorption of the filler, the biological reactions mainly include a biological film formed on the surface of the filler, pollutants are biologically degraded by aerobic microbial flora and are effectively removed, and ammonia nitrogen is converted into nitrate nitrogen under aerobic conditions through nitrification of nitrifying bacteria and is removed. The multi-effect filter 3 mainly has the functions of removing organic matters and ammonia nitrogen, and optimizes the growth environment of microorganisms by scientifically proportioning the proportion of the natural river sand, the zeolite and the limestone.
In one embodiment, the filler of both the protective layer 15 and the transition layer 17 is natural river sand; the particle size of the natural river sand is 0.5 mm. In another embodiment, the natural river sand has a particle size of 1.6 mm. The protective layer 15 mainly protects the high-efficiency treatment layer 16, and the filler loss of the high-efficiency treatment layer 16 is avoided in the routine maintenance process, so that the treatment effect is influenced. The protective layer 15 is filled with single filler natural river sand, is convenient to replace and also plays a role in primary filtration. The transition layer 17 is mainly used for being effectively connected with the water outlet bearing layer 18, so that the filler loss of the high-efficiency treatment layer 16 is prevented, and the function of further filtering is also achieved.
In one embodiment, the filler of the high efficiency treated layer 16 is at least one of zeolite, limestone, and natural river sand; the particle size of zeolite, limestone and natural river sand is 0.8 mm. In another embodiment, the zeolite, limestone and natural river sand have a particle size of 4 mm. The filler of the high-efficiency treatment layer 16 is economical and easily obtained and is mixed according to different grades.
In one embodiment, the packing of the effluent bearing layer 18 is cobblestones; the particle size of the cobblestones is 2 mm. In another embodiment, the cobblestones have a particle size of 32 mm. The main function of the effluent supporting layer 18 is to support the whole multi-effect filter 3 system packing and prevent the packing from losing from the system along with water flow.
In one embodiment, as shown in fig. 4, the air distribution pipe further includes a hood 20, the hood 20 is disposed at the port of the air distribution pipe 19, and a height difference of 30cm is formed at two ends of the air distribution pipe 19; furthermore, the air distribution pipe 19 is provided with vent holes (not shown) in a direction of 45 degrees with the water flow, and the aperture of the vent holes is smaller than the minimum particle size of the filler of the high-efficiency treatment layer 16. In another embodiment, the two ends of the gas distribution tube 19 form a height difference of 80 cm. The air distribution pipe 19 can provide sufficient oxygen for the multi-effect filter 3 and promote the efficient removal of organic matters and ammonia nitrogen. The air distribution pipe 19 is mainly used for creating a better aerobic environment for the multi-effect filter 3 under the condition of low activity of flora in winter, promoting the efficient removal of organic matters and ammonia nitrogen and ensuring the requirement of the quality of reuse water.
Performance testing
The basic structure of the device used is the same as that shown in fig. 1-4. And detecting the COD, BOD, ammonia nitrogen, anionic surfactant and total colibacillus content in the main inlet water quality and the main outlet water quality before and after treatment.
Wherein, the specific subassembly of part that adopts the device is as follows:
1. a raw water tank: the method is used for trial use of rural life grey water in storage.
2. An integrated processing system: phi is 0.6m multiplied by 2.5 m; a disinfection water tank: 10L. Elastic filler is arranged in the strengthening pretreatment tank; the protective layer and the transition layer in the multi-effect filter tank are made of natural river sand with the grain diameter of 0.5-1.6mm, the high-efficiency treatment layer is made of a mixture of the natural river sand, zeolite and limestone according to a certain proportion, the effluent water bearing layer is cobblestones with the grain diameter of 2-32mm, effluent water enters a disinfection water tank, slow-release chlorine tablets are installed in the water tank, and the disinfection time is 15 min. The raw water is lifted into the strengthening pretreatment tank through a peristaltic pump of 500ml/min, the effluent after strengthening pretreatment uniformly falls to the middle part of the multi-effect filter along the water distribution plate through gravity, and the effluent of the multi-effect filter is discharged after being disinfected. The whole system has no extra power consumption except the lift pump.
3. The operation mode is as follows: the water inlet is controlled by a timing converter, water is fed for six times in one day, and the water inlet time is 1h each time.
As a result: the treated water amount is 200L/d, the strengthening pretreatment retention time is 36h, and the hydraulic load of the multi-effect filter is 1.3m3/m2·d。
The main influent water quality and the main effluent water quality are shown in table 1.
TABLE 1 comparison of quality of main influent water and quality of main effluent water
| Item | Quality of main inlet water | The main effluent quality |
| COD(mg/L)≤ | 150 | 30 |
| BOD(mg/L)≤ | 80 | 15 |
| Ammonia nitrogen (mg/L) is less than or equal to | 25 | 10 |
| Anionic surfactant (mg/L) | 0.799 | 0.05 |
| Total Escherichia coli (one/L) | 2.4×104 | 3 |
As can be seen from Table 1, the integrated treatment system of the invention can effectively reduce the contents of COD, BOD, ammonia nitrogen, anionic surfactant and total Escherichia coli in sewage.
The tests show that the invention can make the effluent meet the requirement of the quality of the reuse water under the conditions of low investment, low energy consumption and easy operation and maintenance management, and realize the maximization of environmental benefit under the condition of minimum economic investment, thereby ensuring the long-term operation of rural sewage treatment facilities.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An integrated treatment system for recycling rural grey water is characterized by comprising a strengthening pretreatment tank, a drop basin, a multi-effect filter tank, a disinfection tank, a water inlet pipe, a water outlet pipe and a gas distribution pipe;
the reinforced pretreatment tank is cylindrical;
the water dropping pool is arranged in a closed ring shape along the wall of the strengthening pretreatment pool, and the highest position of the water dropping pool is lower than the strengthening pretreatment pool;
the multi-effect filter is arranged below the drop pool in a semi-annular mode along the wall of the strengthening pretreatment pool, and the width of the multi-effect filter is twice that of the drop pool;
the disinfection tank is arranged below the drop tank in a semi-annular shape along the wall of the strengthening pretreatment tank, and is arranged in a closed annular shape with the multi-effect filter tank, and the height of the wall of the drop tank above the disinfection tank is higher than that of the strengthening pretreatment tank; the slow-release chlorine tablets are arranged in the disinfection tank;
the water inlet pipe is arranged at the bottom of the reinforced pretreatment tank;
the water outlet pipe is arranged at the bottom of the disinfection tank;
the air distribution pipe is arranged in the middle of the multi-effect filter tank along the semi-annular multi-effect filter tank, and two ports of the air distribution pipe are respectively communicated with the atmosphere of the disinfection tank.
2. The integrated rural grey water recycling treatment system according to claim 1, further comprising a fixing frame, an elastic filler, an effluent weir, a top cover of the strengthening pretreatment tank and a mud pipe of the strengthening pretreatment tank, wherein the fixing frame is arranged inside the strengthening pretreatment tank, the elastic filler is fixed on the fixing frame, the effluent weir is arranged around the strengthening pretreatment tank and communicated with the drop tank, the top cover of the strengthening pretreatment tank is arranged at the top of the strengthening pretreatment tank, and the mud pipe of the strengthening pretreatment tank is arranged at the bottom of the strengthening pretreatment tank.
3. The integrated rural grey water recycling treatment system according to claim 2, further comprising a water distribution channel and an adjustable fixing rod, wherein the water distribution channel is annularly arranged at the middle position above the multi-effect filter tank through the adjustable fixing rod.
4. The integrated rural grey water recycling treatment system according to claim 3, further comprising detachable bolts, wherein the distribution channel is detachably mounted and connected through the detachable bolts.
5. The integrated treatment system for recycling rural grey water according to claim 4, wherein the multi-effect filter is sequentially provided with a protective layer, a high-efficiency treatment layer, a transition layer and an effluent supporting layer from top to bottom.
6. The integrated rural grey water recycling treatment system according to claim 5, wherein the fillers of the protective layer and the transition layer are natural river sand; the particle size of the natural river sand is 0.5-1.6 mm.
7. The integrated rural grey water recycling treatment system according to claim 6, wherein the filler of the high-efficiency treatment layer is at least one of zeolite, limestone and natural river sand; the particle sizes of the zeolite, the limestone and the natural river sand are 0.8-4 mm.
8. The integrated rural grey water recycling treatment system according to claim 7, wherein the filler of the effluent supporting layer is cobblestones; the particle size of the cobblestones is 2-32 mm.
9. The integrated rural grey water recycling treatment system according to claim 8, further comprising a hood, wherein the hood is arranged at a port of the gas distribution pipe, and a height difference of 30-80cm is formed between two ends of the gas distribution pipe.
10. The integrated rural grey water recycling treatment system according to claim 9, wherein a vent hole is formed in the direction of 45 degrees between the gas distribution pipe and the water flow, and the aperture of the vent hole is smaller than the minimum particle size of the filler of the high-efficiency treatment layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210292810.3A CN114605037B (en) | 2022-03-22 | 2022-03-22 | Rural grey water cyclic utilization integration processing system |
| ZA2023/00352A ZA202300352B (en) | 2022-03-22 | 2023-01-09 | Integrated treatment system for recycling rural grey water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210292810.3A CN114605037B (en) | 2022-03-22 | 2022-03-22 | Rural grey water cyclic utilization integration processing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114605037A true CN114605037A (en) | 2022-06-10 |
| CN114605037B CN114605037B (en) | 2023-05-09 |
Family
ID=81865744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210292810.3A Active CN114605037B (en) | 2022-03-22 | 2022-03-22 | Rural grey water cyclic utilization integration processing system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114605037B (en) |
| ZA (1) | ZA202300352B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204039221U (en) * | 2014-08-01 | 2014-12-24 | 湖南艾布鲁环保科技有限公司 | A kind of biomembrance process four pond purification system of rural domestic sewage treatment |
| CN105948247A (en) * | 2016-05-25 | 2016-09-21 | 成都理工大学 | Operation method for improving denitrification efficiency of constructed rapid infiltration system |
| CN208071547U (en) * | 2018-03-21 | 2018-11-09 | 湖南艾布鲁环保科技股份有限公司 | A kind of rural domestic sewage treatment small-sized biological contact purification tank |
| CN109592787A (en) * | 2019-01-22 | 2019-04-09 | 湖南中科环保技术有限公司 | A kind of efficient denitrification filters sewage water treatment method ecologically |
| CN109734254A (en) * | 2019-03-11 | 2019-05-10 | 重庆大学 | A kind of small rural Domestic sewage collecting, processing, reusing integral system |
| CN111333182A (en) * | 2020-03-27 | 2020-06-26 | 北京建筑大学 | Reciprocating type biological-ecological retention filter bed combined sewage treatment device and method |
| CN211999356U (en) * | 2020-03-12 | 2020-11-24 | 北京和瑞祥通检测技术有限公司 | Rural domestic sewage integrated treatment device |
| CN213037496U (en) * | 2020-06-16 | 2021-04-23 | 北京七星文旅生态科技有限责任公司 | Partitioned circulating soil infiltration system |
| US20210179465A1 (en) * | 2017-12-13 | 2021-06-17 | Chinese Research Academy Of Environmental Sciences | Method and device for controlling pollutants in basin water resources cycling utilization in agricultural activity areas |
-
2022
- 2022-03-22 CN CN202210292810.3A patent/CN114605037B/en active Active
-
2023
- 2023-01-09 ZA ZA2023/00352A patent/ZA202300352B/en unknown
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204039221U (en) * | 2014-08-01 | 2014-12-24 | 湖南艾布鲁环保科技有限公司 | A kind of biomembrance process four pond purification system of rural domestic sewage treatment |
| CN105948247A (en) * | 2016-05-25 | 2016-09-21 | 成都理工大学 | Operation method for improving denitrification efficiency of constructed rapid infiltration system |
| US20210179465A1 (en) * | 2017-12-13 | 2021-06-17 | Chinese Research Academy Of Environmental Sciences | Method and device for controlling pollutants in basin water resources cycling utilization in agricultural activity areas |
| CN208071547U (en) * | 2018-03-21 | 2018-11-09 | 湖南艾布鲁环保科技股份有限公司 | A kind of rural domestic sewage treatment small-sized biological contact purification tank |
| CN109592787A (en) * | 2019-01-22 | 2019-04-09 | 湖南中科环保技术有限公司 | A kind of efficient denitrification filters sewage water treatment method ecologically |
| CN109734254A (en) * | 2019-03-11 | 2019-05-10 | 重庆大学 | A kind of small rural Domestic sewage collecting, processing, reusing integral system |
| CN211999356U (en) * | 2020-03-12 | 2020-11-24 | 北京和瑞祥通检测技术有限公司 | Rural domestic sewage integrated treatment device |
| CN111333182A (en) * | 2020-03-27 | 2020-06-26 | 北京建筑大学 | Reciprocating type biological-ecological retention filter bed combined sewage treatment device and method |
| CN213037496U (en) * | 2020-06-16 | 2021-04-23 | 北京七星文旅生态科技有限责任公司 | Partitioned circulating soil infiltration system |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA202300352B (en) | 2023-08-30 |
| CN114605037B (en) | 2023-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102775025B (en) | Municipal life wastewater treatment system with high efficiency and low energy consumption | |
| CN101928095B (en) | Distributed domestic sewage treatment method | |
| CN107055754B (en) | Circulating zero-valent iron biofilter for strengthening treatment of rural domestic sewage | |
| CN101786770B (en) | Oligodynamic moving bed sanitary sewage disposal system | |
| CN101468846B (en) | Sectional inlet and drop oxygenation and contact oxidation integrated sewage treating apparatus and method | |
| CN110117134A (en) | A kind of rural domestic sewage treatment process | |
| CN114956459A (en) | Low-energy-consumption and low-emission biological-ecological treatment system and method for dispersed sewage | |
| CN207130103U (en) | A kind of multi-stage ecological filter bed device for sewage disposal | |
| CN1769211A (en) | Integrative bioreactor for treating refuse leachate | |
| CN108585187A (en) | Rural area family sewage-treatment plant and method | |
| CN208933186U (en) | A kind of integrated sewage treating apparatus for domestic sewage in rural areas treatment in situ | |
| CN103896452A (en) | Equipment and method for removing nitrogen out of domestic wastewater | |
| CN111362517A (en) | Modularized vertical linkage bioreactor | |
| CN206014597U (en) | A kind of sewage disposal system | |
| CN114605037B (en) | Rural grey water cyclic utilization integration processing system | |
| CN215627425U (en) | New rural domestic sewage treatment system based on MBR membrane reactor | |
| CN213834719U (en) | Immobilized carrier microorganism stabilization pond | |
| CN213977142U (en) | Combined ecological floating island | |
| CN210764840U (en) | Distributed micro-power sewage treatment device and sewage treatment system comprising same | |
| CN201010577Y (en) | Multilevel back-turning flow artificial oxidation pond | |
| CN113060909A (en) | Artificial wetland integrated device and method for decentralized treatment of rural domestic sewage | |
| CN112759087A (en) | Denitrification artificial wetland integrated purification system and sewage ecological purification method | |
| CN202054710U (en) | Distributed integral domestic sewage treatment device | |
| CN217377657U (en) | Rural sewage treatment system | |
| CN220078793U (en) | Sectional type micro-power integrated sewage treatment equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |