Combined type clean water treatment equipment

Abstract

The utility model relates to composite clean water treatment equipment which comprises an anaerobic reaction tank, an anoxic reaction tank, an aerobic reaction tank, a sedimentation tank, a primary filter tank, an MBR (Membrane Bioreactor) membrane tank and a clean water tank which are communicated in sequence, sewage in the anaerobic reaction tank enters the anoxic reaction tank from bottom to top after reaction; sewage degraded by microorganisms in the anoxic tank flows into the aerobic reaction tank from bottom to top; sewage reacted in the aerobic reaction tank enters a sedimentation tank from bottom to top; after the sewage in the sedimentation tank is settled, clear water enters the primary filter tank to be filtered, and the sewage flows back to the anaerobic reaction tank to be filtered again; sewage in the primary filter tank is sequentially filtered, adsorbed and purified by a volcanic rock layer, a quartz sand layer and a bamboo charcoal layer from top to bottom and then enters the MBR membrane tank, water in the MBR membrane tank is filtered by an MBR membrane and then enters the clean water tank, and water in the clean water tank is disinfected, sterilized, decolorized and deodorized by ozone and then is used for circularly flushing a toilet. The equipment is efficient in sewage COD (Chemical Oxygen Demand) degradation, nitrogen and phosphorus removal and solid-liquid separation effects.

Description

Technical Field

[0001] This utility model pertains to wastewater treatment devices, specifically a composite high-efficiency clean water treatment equipment that purifies toilet wastewater to meet greywater standards before circulating it for toilet flushing. Background Technology

[0002] Poor public toilet conditions, waste of resources (water), and environmental pollution (odors, emissions) have become a global problem. In response to the characteristics of severely water-scarce and high-altitude regions and the needs of different markets, water-saving ecological toilet products have been developed. The core technology is that the flushing water and urine are treated and reused for flushing, making them particularly suitable for use in arid, water-scarce, and high-altitude urban or rural areas.

[0003] Existing water-saving ecological toilets are equipped with small-capacity water purification devices, few filtration stages, incomplete treatment, and low water production capacity. They can only meet the needs of recycling a small amount of coarsely filtered clean water, and cannot meet the water demand of larger-volume applications. Existing MBR membrane bioreactors do not perform multi-stage filtration, resulting in wastewater with high levels of impurities entering the MBR membrane, which easily clogs the MBR, thereby reducing the service life of the MBR membrane and increasing maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a water purification device capable of multi-stage filtration, which is highly efficient in wastewater COD degradation, nitrogen and phosphorus removal, and solid-liquid separation, and meets the needs of applications with large water consumption.

[0005] To achieve the above objectives, this utility model provides a composite clean water treatment device, which is characterized by including an anaerobic reaction tank, an anoxic reaction tank, an aerobic reaction tank, a sedimentation tank, a primary filter tank, an MBR membrane tank, and a clear water tank connected in sequence.

[0006] Wastewater from the anaerobic reactor flows from bottom to top into the anoxic reactor after reaction; wastewater from the anoxic reactor, after degradation by microorganisms, flows from bottom to top into the aerobic reactor; wastewater from the aerobic reactor flows from bottom to top into the sedimentation tank; wastewater from the sedimentation tank, after sedimentation, enters the primary filter for filtration, and the wastewater is returned to the anaerobic reactor for further filtration.

[0007] Wastewater in the primary filtration tank is filtered, adsorbed, and purified sequentially through volcanic rock layer, quartz sand layer, and bamboo charcoal layer before entering the MBR membrane tank. Water in the MBR membrane tank is filtered through the MBR membrane and then enters the clear water tank.

[0008] It also includes a water storage tank connected to the clear water tank via a pipeline, and the water storage tank is connected to an ozone pipeline to disinfect and sterilize the water from the clear water tank using ozone.

[0009] The water storage pool is communicated with the clean water pool through a one-way valve on a pipeline, preventing pool water from flowing back to the clean water pool when the water level in the water storage pool is too high.

[0010] An overflow valve is installed on the water storage pool to drain water in time when the pool water exceeds a set warning line.

[0011] The present utility model has the advantages that: the pretreatment, anaerobic reaction, anoxic denitrification, aerobic reaction, sedimentation in the sedimentation tank, coarse filtration and membrane filtration technology are integrated, and the water treatment device has the advantages of high COD degradation, nitrogen and phosphorus removal and solid-liquid separation efficiency.

[0012] The present utility model will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a schematic view of a composite clean water treatment device.

[0014] Figure 2 is a schematic view of a water treatment process of a composite clean water treatment device. DETAILED DESCRIPTION

[0015] To further illustrate the technical means and effects adopted by the present utility model to achieve the predetermined purpose, the specific implementation, structural features and effects of the present utility model will be described in detail below with reference to the accompanying drawings and examples.

[0016] The present embodiment provides a composite clean water treatment device. Figure 1 The composite clean water treatment device shown in the present embodiment comprises an anaerobic reaction tank, an anoxic reaction tank, an aerobic reaction tank, a sedimentation tank, a primary filter tank, an MBR membrane tank and a clean water tank which are sequentially communicated; the wastewater in the anaerobic reaction tank flows into the anoxic reaction tank from bottom to top after reaction; the wastewater in the anoxic tank flows into the aerobic reaction tank from bottom to top after degradation by microorganisms; the wastewater in the aerobic reaction tank flows into the sedimentation tank from bottom to top after reaction; the clean water in the sedimentation tank is filtered in the primary filter tank after sedimentation, and the wastewater flows back to the anaerobic reaction tank for recycling filtration; the wastewater in the primary filter tank flows into the MBR membrane tank after three-layer filtration, adsorption and purification by the volcanic rock layer, the quartz sand layer and the bamboo charcoal layer in sequence, the water in the MBR membrane tank is filtered by the MBR membrane, and the water in the clean water tank is disinfected, sterilized, decolorized and deodorized by ozone and then used for recycling flushing.

[0017] The composite clean water treatment equipment eliminates the odor of toilet effluent and the treatment and utilization of effluent. After the sewage of the flushing toilet is treated, the water reaches the standard of reclaimed water and is recycled for flushing the toilet to save water. The excrement is decomposed by microorganisms to form organic fertilizer. The new type of modular membrane bioreactor (MBR) equipment is upgraded by remote intelligent monitoring, which is a new type of modular membrane bioreactor (MBR) equipment combining pretreatment, anaerobic, anoxic denitrification, aerobic biochemical, sedimentation tank sedimentation, coarse filtration and membrane filtration technology. It has high efficiency sewage purifier with high efficiency of sewage COD degradation, denitrification and phosphorus removal, and solid-liquid separation. The effluent can be used for recycling flushing.

[0018] In practical application, the toilet sewage enters the septic tank (adjustment tank), and the sewage in the adjustment tank is lifted by the sewage pump (cutting) to the composite high-efficiency clean water treatment equipment anaerobic reaction tank (anaerobic tank). The sewage in the anaerobic tank reacts in the tank and flows from bottom to top into the anoxic reaction tank. After the degradation of microorganisms in the anoxic reaction tank (anoxic tank), the sewage flows from bottom to top into the aerobic tank and reacts. The sewage in the aerobic reaction tank (aerobic tank) reacts in the tank and flows from bottom to top into the sedimentation tank. After sedimentation, the clear water in the sedimentation tank enters the primary filtration tank for filtration, and the sewage returns to the anaerobic tank for recycling filtration. The sewage in the primary filtration tank is filtered, adsorbed and purified by three layers of volcanic rock, quartz sand and bamboo charcoal, and then enters the MBR membrane tank. The water in the MBR membrane tank is filtered by MBR membrane and enters the clear water tank. After disinfection and sterilization by ozone, the water in the clear water tank reaches the standard of recycling. The variable frequency control system can be used for recycling flushing. Through multi-stage filtration, the blockage of MBR is effectively avoided, and the maintenance cost is greatly reduced.

[0019] Finally, in order to better utilize water resources, the embodiment also provides a water storage tank communicated with the clear water tank through a pipeline. An ozone pipeline is communicated in the water storage tank. The water from the clear water tank is disinfected and sterilized by ozone, and then used for flushing the toilet after color removal and odor removal, realizing recycling.

[0020] In addition, the water storage tank is communicated with the clear water tank through a one-way valve on the pipeline to prevent the pool water from flowing back to the clear water tank when the water level in the water storage tank is too high. At the same time, an overflow valve is installed on the water storage tank to drain water in time when the pool water exceeds the set warning line, preventing too much water storage from causing harm to the water storage tank, and even the overflowing water from causing adverse effects on the surrounding environment.

Claims

1. A composite clean water treatment device, characterized in that: It includes an anaerobic reactor, an anoxic reactor, an aerobic reactor, a sedimentation tank, a primary filter, an MBR membrane tank, and a clear water tank that are connected in sequence. Wastewater from the anaerobic reactor flows from bottom to top into the anoxic reactor after reaction; wastewater from the anoxic reactor, after degradation by microorganisms, flows from bottom to top into the aerobic reactor; wastewater from the aerobic reactor flows from bottom to top into the sedimentation tank. Wastewater in the sedimentation tank is filtered through the sedimented clear water and then flows back to the anaerobic reaction tank for further filtration. Wastewater in the primary filtration tank is filtered, adsorbed, and purified sequentially through volcanic rock layer, quartz sand layer, and bamboo charcoal layer before entering the MBR membrane tank. Water in the MBR membrane tank is filtered through the MBR membrane and then enters the clear water tank.

2. The composite clean water treatment equipment according to claim 1, characterized in that: It also includes a water storage tank connected to the clear water tank via a pipeline, and the water storage tank is connected to an ozone pipeline to disinfect and sterilize the water from the clear water tank using ozone. The water storage tank is connected to the clear water tank via a one-way valve on the pipeline to prevent water from flowing back into the clear water tank when the water level in the water storage tank is too high.

3. The composite clean water treatment equipment according to claim 2, characterized in that: The water storage tank is equipped with an overflow valve, which drains water in a timely manner when the water level exceeds the set warning line.

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