CN221254275U - Multifunctional purifying treatment device for small domestic sewage - Google Patents

Abstract

The utility model relates to a small-scale domestic sewage multifunctional purification treatment device, including a regulator, an SBR reactor, a biofilter and a disinfector, characterized in that a floating skimming mechanism is arranged in the regulator, the water outlet of the regulator is connected to the water inlet of the SBR reactor, the water outlet of the SBR reactor is connected to the water inlet of the biofilter, the water outlet of the biofilter is connected to the water inlet of the disinfector, the floating skimming mechanism comprises a floating frame and an oil pump, the oil pump is mounted on the floating frame, the floating frame is provided with an oil skimming tank and a floating body fixedly connected to the oil skimming tank, the opening of the oil skimming tank faces upward, the inlet of the oil pump is located in the oil skimming tank, and cooperates with the vertical guide of the regulator. The utility model can operate stably for a long time and is easy to operate, and can be used for domestic sewage treatment in urban residential areas or rural living areas or sewage treatment in other suitable occasions.

Description

Small-scale domestic sewage multifunctional purification treatment device

Technical Field

The utility model relates to a small-sized multifunctional domestic sewage treatment device, belonging to the technical field of sewage treatment and environmental protection.

Background technique

For small-scale domestic sewage, SBR reactor is a feasible treatment method. With SBR reactor as the main part and other equipment, a relatively ideal purification effect can be obtained. Chinese patent document CN206985958U discloses a small/micro domestic sewage treatment system, including a regulating tank, a biological reaction tank, a disinfection reaction tank and a biological filtration tank. The regulating tank, the biological reaction tank, the disinfection reaction tank and the biological filtration tank are connected in sequence. The bottom of the biological reaction tank and the disinfection reaction tank are respectively provided with respective water distribution devices and aeration devices. The water inlet pipe of the biological reaction tank constitutes the system water inlet pipe, which is connected to the water distribution device of the biological reaction tank. The water outlet pipe of the biological reaction tank is connected to the water distribution device of the disinfection reaction tank. The water outlet of the disinfection reaction tank and the water inlet of the biological filtration tank are connected through a water pipeline. The biological reaction tank adopts SBR process. This treatment system simplifies the process accessories and is suitable for daily treatment. For the treatment of micro/small domestic sewage with a treatment volume of less than 10 tons, the effluent can stably meet the relevant national sewage discharge standards, but there are still some areas that need to be improved, mainly as follows: First, there is a certain amount of oil/oil pollution in domestic sewage. Although the amount is small, the biodegradability is relatively poor, and it is easy to suspend on the liquid surface in the reactor or adhere to the filler or the inner wall of the reactor. It is not easy to be separated and discharged. After long-term accumulation, it will affect the effective operation or purification effect of the reactor to a certain extent. Second, the disinfection reaction pool is located in the front sequence of the biological filtration pool. The addition of disinfectants will have an adverse effect on the maintenance of microorganisms in the biological filtration pool. Strict operation is required to maintain the effective operation of the system, causing inconvenience to users. These unfavorable factors have hindered the promotion and application in practice to a certain extent.

Utility Model Content

The utility model aims to provide a small-sized multifunctional domestic sewage purification treatment device which is conducive to long-term effective operation and convenient use.

The technical scheme of the utility model is: a small-scale multifunctional domestic sewage purification treatment device, comprising a regulator, an SBR reactor, a biological filter and a disinfector, a floating oil skimming mechanism is arranged in the regulator, a water outlet of the regulator is connected to a water inlet of the SBR reactor, a water outlet of the SBR reactor is connected to a water inlet of the biological filter, and a water outlet of the biological filter is connected to a water inlet of the disinfector.

Preferably, the floating skimming mechanism comprises a floating frame and an oil pumping unit, wherein the oil pumping unit is mounted on the floating frame, the floating frame is provided with an oil skimming tank and a float fixedly connected to the oil skimming tank, the oil skimming tank opens upward, and the inlet of the oil pumping unit is located in the oil skimming tank.

Further, the floating oil skimming mechanism cooperates with the regulator vertical guide.

Furthermore, an oil skimming limit structure for limiting the lowest position of the floating oil skimming mechanism is provided in the regulator.

Further, the regulator is provided with a regulator agitator.

Preferably, the regulator agitator adopts a pneumatic agitation mechanism.

Furthermore, an SBR biological filler is arranged in the middle of the SBR reactor.

Preferably, the SBR biological filler is arranged in such a manner that it is respectively installed on a plurality of filler fixing ropes fixed at the upper end or on a filler fixing frame fixed at the upper end.

Furthermore, one or more aerators are provided at the bottom of the SBR reactor.

Preferably, one or more aerators are provided at the bottom of the biofilter.

Furthermore, a sterilizer agitator is provided in the sterilizer.

Preferably, the sterilizer agitator adopts a hydraulic agitation mechanism.

Furthermore, the water outlet of the sterilizer is connected to the ecological pond.

The beneficial effects of the utility model are as follows: since a floating skimming mechanism is provided in the regulating tank, the oil floating on the liquid surface of the regulating tank can be extracted first, and then the sewage is sent to the bioreactor, thereby significantly reducing the oil content in the water; since the bioreactor adopts tangential jet (high speed) water inlet, the inlet water forms a vortex and turbulence in the bioreactor, the oil remaining in the water is broken up and mixed/collided with impurities such as particles in the water, and is very easy to adhere to these impurities and be surrounded by the impurities (all around are adhered with impurities), and the sludge formed by entering the reaction process during the reaction process can be discharged together with the sludge, thereby preventing or avoiding the long-term deposition of oil on the inner wall and filler of the reactor to a great extent, which is beneficial to the long-term effective operation of the system; since the biological filter is located in the front sequence of the disinfection reactor, it is not affected by the disinfectant, which is beneficial to the establishment and maintenance of microbial activity and concentration, and does not require strict monitoring and operation. At the same time, the biological filter filters/intercepts most of the microorganisms and impurities in the water, and is also beneficial to reducing the loss of disinfectant in the disinfector and reducing the disinfection cost.

The utility model can operate stably for a long time and is easy to operate, and can be used for domestic sewage treatment in urban residential areas or rural living areas or sewage treatment in other suitable occasions.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model.

Detailed ways

Referring to FIG. 1 , this small-scale domestic sewage multifunctional purification treatment device uses a biological reactor (purification treatment) 20 as the main treatment equipment. The device can be operated according to the SBR mode and can be called an SBR reactor. Through aerobic, anoxic and anaerobic biochemical reactions and physical reaction processes such as adsorption and sedimentation, organic pollutants and other pollutants in sewage are eliminated. In the pre-order of the SBR reactor, a regulator (or regulating tank) 10 with water collection, regulation and oil removal is set. A floating (or floating, or floating) skimmer (or skimming mechanism) is set in the regulator. The floating skimmer (or skimmer for short) is used to remove most of the oil pollutants (or oil pollution, or oil) in the sewage, which not only has a corresponding purification effect, but also avoids the negative impact of oil pollution on the subsequent treatment process. The post-order of the SBR reactor is a biological filter 30 and a disinfector 40, which is further purified by a biological filter (or biological filter pool, or biological filter pool) and disinfected by a disinfector. The disinfectant used can be a commonly used chlorine-containing disinfectant or a non-residue disinfectant such as ozone. Each sequence of treatment equipment is connected in sequence. The main biological treatment equipment SBR reactor not only has high treatment efficiency, but also can adapt well to the intermittent discharge method of domestic sewage. The subsequent treatment equipment can adopt similar treatment methods, among which the biological filter can circulate/treat the same influent water multiple times to improve the purification degree. According to actual conditions, an intermediate water storage tank (or intermediate water storage tank, not shown) can also be set behind the SBR reactor to temporarily store the drainage of the SBR reactor so that the subsequent treatment equipment can perform continuous treatment.

The floating skimming mechanism includes a floating frame and an oil pump (or oil pump) 18, the oil pump is installed on the floating frame, the floating frame is provided with an oil skimming groove 17 and a floating body 16 fixedly connected to the oil skimming groove (directly connected or connected through a bracket/installed on the same bracket, etc.), the oil skimming groove is opened upward (or the notch is upward), and the inlet of the oil pump is located in the oil skimming groove. The notch of the oil skimming groove can be rectangular (including square), circular, annular, rectangular annular (or U-shaped), or any other suitable shape.

The notch of the skimmer can be provided with an overflow notch or without an overflow notch. For example, the notch edge of the skimmer (the top edge of the skimmer) is set to be serrated. When there is no overflow notch, since all parts of the notch (notch edge) are on the same plane, when the plane is lower than the liquid level of the regulating tank, the oil (or other liquid, such as oil-water mixture) around the notch (outside) can cross the notch from all parts of the notch and overflow into the skimmer; when there is an overflow notch, when the bottom edge of the overflow notch is lower than the liquid level of the regulating tank, the oil around the notch can cross the notch from the overflow notch and overflow into the skimmer.

By reasonably setting the relative position between the float and the notch, and the relationship between the overall weight of the skimmer and the buoyancy of the float (and the buoyancy of other parts of the skimmer), the notch of the skimmer tank can be slightly lower than the liquid level of the regulator when the skimmer is floating. After the pump is started, the surrounding floating oil will continue to enter the skimmer tank and be pumped out. The pumped oil contains a small amount of water, which can be sent to professional oil treatment equipment/occasion for professional treatment.

The oil pump can be directly set in the skimming tank or installed in other parts of the floating frame. When the inlet of the oil pump (the inlet on the oil pump housing) is not in the skimming tank, a corresponding oil pumping pipe can be connected to the inlet, and the outer port of the oil pumping pipe can be extended into the skimming tank. In this case, the outer port of the oil pumping pipe can be regarded as the inlet of the oil pumping unit.

The floating skimming mechanism cooperates with the vertical guide of the regulator (a cooperation method that allows the floating skimming mechanism to move up and down in the regulator, but does not allow horizontal movement or tilting).

Usually, the floating body on the oil skimmer can be a buoy (for example, a floating ball), and the number of buoys is multiple, usually symmetrically distributed around the floating frame, so as to balance the gravity and buoyancy of the oil skimmer in a horizontal state (including moment balance). The skimmer tank can adopt a symmetrical structure so that when there is oil (or water) in the skimmer tank, the skimmer mechanism remains in a horizontal state without tilting.

The outer side of each float can be made close to the inner wall of the regulator, leaving a small gap between the float and the inner wall of the regulator, so that the oil skimming mechanism can move up and down and cannot tilt (because there is a small gap between the two, it can tilt or shake slightly, so this slight tilt or shake has no substantial impact and can be regarded as no tilt).

When necessary (for example, when the cross-sectional area/volume of the regulator is too large to be suitable for the float to directly cooperate with the clearance of the inner wall of the regulator), multiple sets of vertical guide rails (or slide grooves) and sliding sleeves (or sliders) that slide with each other can be set on the regulator (inside the regulator) and the floating frame to achieve the required vertical guide cooperation.

The regulator is provided with a skimming limit structure 19 for limiting the lowest position of the floating skimming mechanism, for example, a limit structure that protrudes horizontally inward from the inner wall of the regulator and can block the skimming mechanism below. When the pumping body descends to press on the skimming limit structure, the skimming limit structure blocks the skimming mechanism from continuing to descend, thereby limiting the lowest position of the skimming mechanism. In this way, not only the lifting amount of the skimming mechanism is reduced, but also unnecessary interference caused by the skimming mechanism when the liquid level is low is avoided.

Manual observation and operation can be adopted. When the floating oil on the liquid surface of the regulator reaches a certain thickness, the pumping unit is started to pump out the floating oil. The output pipe and power line connected to the outlet of the pumping unit can be hung on the regulator with a certain margin to allow the pumping unit to move up and down within a certain range.

When necessary, corresponding sensors and intelligent control devices can be set according to existing automatic control technology and corresponding signal acquisition technology to achieve automatic control of oil skimming/extraction.

During long-term operation, since a minimum liquid level can usually be set in the regulating tank so that the liquid level in the regulator is not lower than the minimum liquid level, in order to reduce the water content in the pumped oil, the working end point of the oil pump can be properly controlled to allow a certain amount of oil to float.

The regulating tank can be equipped with a regulator agitator to avoid water quality deterioration caused by long-term sedimentation of sludge at the bottom.

The regulator agitator can adopt a pneumatic stirring mechanism. For example, the pneumatic agitator can include a stirring air source (for example, an air pump, a Roots blower) 12, the stirring air source is arranged on the outside of the regulator, and its outlet is connected to one or more tangential nozzles (nozzles with a tangential/close to a tangent line spraying direction, not shown) arranged at the bottom edge of the regulator. When the stirring air source is started, the airflow sprayed from the tangential nozzle at the bottom of the regulator impacts the surrounding water and drives the water to rotate together, forming an ascending vortex, stirring up the sediment at the bottom of the regulator (if any), and at the same time achieving the mixing of air and water, so as to facilitate the floating of oil or other floating components, and further obtain the flotation effect. In this way, not only the obstacles that may be caused by mechanical stirring are avoided, but also air is introduced and mixed while stirring is achieved, which is conducive to increasing and maintaining the dissolved oxygen content in the water, and at the same time, a flotation effect is formed, which is conducive to improving the removal rate of oil-containing impurities by the regulator.

One or more de-spinning plates 15 are provided in the middle and upper part of the regulator. The de-spinning plates are located above the agitator of the regulator (for example, the nozzle of the pneumatic agitator) and below the designed liquid level (the highest liquid level or the lowest liquid level). The de-spinning plates can be perforated plates (or sieve plates, with a number of holes distributed on the plate surface). The ascending swirl below is blocked by the de-spinning plates, and the rotation speed is reduced or eliminated, so as to prevent the swirl from disturbing/crushing the floating oil layer located above the de-spinning plates (on the liquid surface).

An SBR biological filler 25 is provided in the middle of the SBR reactor. The SBR biological filler is arranged in such a manner that it is respectively installed on a plurality of filler fixing ropes fixed at the upper end or on a filler fixing frame fixed at the upper end. A filler bracket can be provided in the SBR reactor to fix the upper end of the filler fixing rope or the filler fixing frame, that is, the upper end of the filler fixing rope or the filler fixing frame is fixedly connected to the filler bracket. This method makes full use of the structural advantages of the biological contact oxidation method and the biofilm method, allowing the biological strains to implant on the biological filler to form a multi-layer biofilm, wherein the inner layer is mainly anaerobic strains, the middle layer is mainly facultative anaerobic strains, and the surface is mainly aerobic strains. With this type of filler, during the aeration process or during the water inlet process, the airflow or water flow can effectively disturb the biological filler, improve the mass transfer effect between air and water and the biological filler, and facilitate the separation of aged sludge.

The bottom of the SBR reactor should be equipped with one or more aerators (SBR reactor aerator) 27 to aerate according to the designed process. The bottom of the biofilter should also be equipped with one or more aerators (biofilter aerator) 37 to maintain the overall aerobic biochemical conditions of the biofilter and maintain the clarity of the effluent.

Each aerator is connected to an aeration gas source (e.g., an air pump or a Roots blower) for supplying air thereto. The aerators in the bioreactor and the biofilter can be provided with different aeration gas sources and different aerator forms according to actual needs, or the same aerator can be used or connected to the same aeration gas source.

The biological filter tank should generally be provided with a biological filter material layer 35, in which biological filter materials are filled, and these biological filter materials can be activated carbon or other fillers suitable for the biological filter tank. When activated carbon is used as the biological filter material, it can form adsorption and filtration functions, further remove pollutants in the sewage, and achieve further purification.

Respective water distribution structures 22, 32 may be provided in the bioreactor and the biofilter to achieve substantially uniform water inflow in the cross section. The respective water distributors may be provided at the top or bottom of the bioreactor and the biofilter according to actual needs.

A sterilizer agitator (or sterilizer stirring system, not shown) should usually be provided in the sterilizer. The sterilizer agitator may adopt a hydraulic stirring mechanism, for example, the hydraulic stirring mechanism may include a hydraulic stirring pump (water pump), which is arranged on the outside of the sterilizer, and its inlet is connected to the upper part of the liquid space of the sterilizer through a pipeline, and its outlet is connected to one or more tangential nozzles (nozzles with a tangential/close to tangent spraying direction, not shown) arranged at the bottom edge of the sterilizer through a pipeline. When the hydraulic stirring pump is started, the water sprayed from the nozzle at the bottom of the sterilizer impacts the water at the bottom of the sterilizer, and the water is mixed to form an ascending vortex, thereby achieving stirring. The vortex and self-circulation of the liquid in the sterilizer achieve full mixing of the disinfectant and water, and avoid the deposition of sludge at the bottom.

A disinfectant tank 48 may be mounted on the top of the sterilizer, and the outlet of the disinfectant tank is located inside the sterilizer or above the top opening of the sterilizer, so that the outflowing disinfectant falls into the sterilizer.

The water outlet of the disinfector can be connected to the ecological pond 60 or other water storage facilities (subsequent water treatment facilities), or it can be discharged directly to meet the standards and enter the wastewater discharge system without setting up post-treatment facilities.

The required connecting pipeline 53 and the control valves and sensors/detectors of pressure, flow, etc. on the pipeline can be set according to the existing technology or other suitable technologies. The liquid level sensors, pressure sensors, component detectors and other sensors/detectors can be set in each reactor/processor according to the existing technology or other suitable technologies. The overflow structure can be set when appropriate according to the existing technology or other suitable technologies.

Unless otherwise specified or when one preferred or optional technical means is a further limitation of another technical means, the preferred and optional technical means disclosed in the present utility model can be arbitrarily combined to form several different specific implementation methods.

Claims (10)

1. The multifunctional purification treatment device for the small domestic sewage comprises a regulator, an SBR reactor, a biological filter and a sterilizer, and is characterized in that a floating oil skimming mechanism is arranged in the regulator, a water outlet of the regulator is connected with a water inlet of the SBR reactor, a water outlet of the SBR reactor is connected with a water inlet of the biological filter, and a water outlet of the biological filter is connected with a water inlet of the sterilizer.

2. The multifunctional small domestic sewage purifying device as claimed in claim 1, wherein the floating type oil skimming mechanism comprises a floating frame and an oil pumping unit, the oil pumping unit is arranged on the floating frame, the floating frame is provided with an oil skimming groove and a floating body fixedly connected with the oil skimming groove, the opening of the oil skimming groove faces upwards, and the inlet of the oil pumping unit is positioned in the oil skimming groove.

3. The small-sized multifunctional purification treatment device for domestic sewage according to claim 2, wherein the floating type oil skimming mechanism is vertically oriented and matched with the regulator.

4. A small-sized domestic sewage multifunctional purification treatment device according to claim 3, wherein the regulator is internally provided with an oil skimming limit structure for limiting the lowest position of the floating oil skimming mechanism.

5. A compact multifunctional sewage purification treatment apparatus according to any one of claims 1 to 3, wherein the regulator is provided with a regulator agitator, and the regulator agitator employs a pneumatic agitation mechanism.

6. A small-sized multifunctional purification treatment device for domestic sewage according to any one of claims 1-3, wherein the middle part in the SBR reactor is provided with SBR bio-packing in a manner of being respectively mounted on a plurality of packing fixing ropes fixed at the upper end or on a packing fixing frame fixed at the upper end.

7. A compact multifunctional purification treatment apparatus for domestic sewage according to any of claims 1-3, characterized in that the bottom of the SBR reactor is provided with one or more aerators.

8. A compact multifunctional sewage purification treatment apparatus according to any one of claims 1-3, wherein the bottom of the biofilter is provided with one or more aerators.

9. A small-sized multifunctional purification treatment device for domestic sewage according to any one of claims 1-3, wherein a sterilizer stirrer is arranged in the sterilizer, and the sterilizer stirrer adopts a hydraulic stirring mechanism.

10. A small-sized domestic sewage multifunctional purification treatment device according to any one of claims 1-3, wherein the water outlet of the sterilizer is connected to an ecological pond.