CN202849218U - Widely used and efficient buried sewage treatment equipment - Google Patents

Abstract

The utility model relates to an underground sewage treatment equipment, in particular to an underground sewage treatment equipment with wide application and high efficiency. Its technical scheme is: the equipment is a box structure, and the middle is divided into three layers by a partition; the first cell is a hydrolytic acidification tank filled with filler; the second cell is a biological contact oxidation tank; the third cell is a sedimentation tank; its characteristics It is to add a box body behind the existing sedimentation tank as a filter cloth filter tank, and the filter tank is equipped with fiber filter sheets, water collection pipes, mobile mud suction system, and mud discharge tank. The beneficial effects of the utility model are as follows: (1) the effluent can reach the first-class A standard of GB18918-2002 Pollutant Discharge Standard for Urban Sewage Treatment Plants, and the scope of application is wider; (2) the equipment structure is integrated design, and the project cost is low (3) The total installed power of the equipment is low, which reduces the cost of supporting equipment; (4) The packing and filter components in the pool adopt standardized and modular design, with high installation accuracy, simple and convenient maintenance and replacement, and strong scalability.

Description

Widely used and efficient buried sewage treatment equipment

technical field

The utility model relates to a buried sewage treatment equipment, in particular to a widely used and efficient buried sewage treatment equipment; it is mainly used for the treatment of domestic sewage in hotels, schools, residential quarters, highways, railways, etc., as well as livestock Treatment of domestic wastewater in processing plants, fresh milk processing plants, etc.

Background technique

At present, most of the buried sewage treatment equipment commonly used in the market adopts the hydrolytic acidification-biological contact oxidation-sedimentation process. The equipment is a box structure, and the middle is divided into three compartments by a partition. The first cell is a hydrolytic acidification pool filled with fillers. The function of this pool is to hydrolyze the refractory macromolecular organic matter in sewage into easily degradable small molecular organic matter, which is beneficial to the subsequent biological treatment; the second cell is biological contact oxidation Pool, the pool is filled with filler, and the blower is used to aerate the pool, and the aerated sewage flows through the filler grid to make the surface of the filler covered with biofilm, and the organic matter is degraded and removed by microorganisms during the contact process between sewage and biofilm; the third grid is the sedimentation tank , the effluent of the biological contact oxidation tank contains detached biofilm and a small amount of suspended matter. In the sedimentation tank, the detached biofilm and suspended matter settle at the bottom of the tank and are discharged through mud discharge. Clean water flows out through the overflow weir, and the sewage is purified. . The equipment has mature technology, small investment and wide range of uses, and is very popular among users. In recent years, with the improvement of the country's environmental protection requirements, some places require the treated water to meet the "Urban Sewage Treatment Plant Pollutant Discharge Standard" GB18918-2002 Grade A standard to meet the environmental requirements or the needs of users for reuse, but due to The integrated equipment adopts the traditional two-stage biological treatment method, and the treated water can only meet the GB18918-2002 Class B standard, which cannot meet the requirements of environmental protection. This feature limits the use of the integrated equipment.

Utility model content

In order to overcome the deficiency that the existing buried sewage treatment equipment cannot meet the first-class A standard, the utility model provides a widely used and efficient buried sewage treatment equipment. Reuse requirements, and the cost and operating costs are low, and the management and maintenance are simple and convenient.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

Widely used and efficient buried sewage treatment equipment, the equipment is a box structure, divided into three compartments by a partition in the middle; the first compartment is a hydrolytic acidification tank filled with fillers; the second compartment is a biological contact oxidation tank filled with fillers , the blower is aerated into the tank, and the aerated sewage flows through the filler grid to make the filler surface covered with biofilm, and the organic matter is degraded and removed by microorganisms during the contact process between the sewage and the biofilm; the third grid is a sedimentation tank, a biological contact oxidation tank The effluent contains exfoliated biofilm and a small amount of suspended matter. In the sedimentation tank, the exfoliated biofilm and suspended matter settle at the bottom of the pond and are discharged through mud discharge. The clear water flows out through the overflow weir and the sewage is purified; it is characterized in that A box body is added behind the existing sedimentation tank as a filter cloth filter tank, and fiber filter sheets, water collection pipes, mobile mud suction system and mud discharge tank are arranged in the filter tank.

In the utility model, the fiber filter is an ion fiber filter. The filter can intercept and adsorb a large amount of flocs that have not been removed by the sedimentation tank, improve the solid-liquid separation ability of the equipment, improve the quality of the effluent, and have good stability of the effluent.

In the utility model, the filter cloth is a special filter cloth capable of retaining micron-sized particles, and the material structure of the special filter cloth is added with wear-resistant brush ion charges. It avoids the disadvantage that the conventional filter cloth only has a surface charge coating and is easy to be washed away, so that the filtering effect is better and the cleaning is more thorough.

In the present utility model, the filter cloth is arranged on the filter frame, the water collecting pipe is arranged outside the filter frame, the mobile dredging system is a dredging pump, and a washing crane is also installed in the filter tank.

In the utility model, the filter cloth is arranged on both sides of the filter frame.

The ionic fiber filter cloth filter greatly increases the filtration area through a special structural design, and adopts a double-sided filtration mode, which can save the space required for the filter layer, support layer and water collection system of the conventional filter, expand the filtration area, and greatly reduce the occupied area. The floor area minimizes the volume of the integrated equipment; the ionic fiber filter cloth filter adopts a linear moving washing method, so that the cleaning process and the filtering process can be carried out at the same time. Sweeping, negative pressure suction of dirt adhered to the filter, eliminating the need for conventional high-power pumps and other backwashing equipment.

In general, while retaining the structure of the existing buried sewage treatment equipment, a box is added behind the sedimentation tank of the existing equipment as an ionic fiber filter cloth filter tank. Fiber filter cloth is arranged in the filter tank, and after sedimentation treatment The sewage flows into the filter cloth filter by itself, and the water flows through the filter cloth from the outside to the inside under pressure to filter the filter cloth. The biofilm flocs and suspended solids in the water that have not been removed by the sedimentation tank are intercepted by the filter cloth, and the sewage The purified sewage is collected by the small holes in the filter frame and the outlet pipe at the bottom, and finally overflows into the outlet through the outlet weir to achieve the purpose of improving the quality of the outlet water. As the filtration progresses, the suspended matter gradually accumulates on the surface of the filter cloth, the filtration speed gradually decreases, and the water level in the pool gradually rises. When the water level rises to the predetermined water level, negative pressure suction backwashing starts, and the filter piece is fixed during backwashing. With the movement of the mobile washing machine and the start of the suction pump, the sludge on the filter piece starts to be lined. Sweeping suction, the suctioned muddy water is discharged into the sludge tank by the water pump, and the filter cloth is cleaned after the driving moves a stroke, and the system can be fully automatic.

In summary, the beneficial effects of the utility model are:

(1) The quality of the effluent is stable and excellent. Using this equipment to treat domestic sewage and industrial wastewater similar in nature to domestic sewage does not require additional treatment facilities, so that the effluent can meet the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" GB18918-2002 Class A standard, with a wider scope of application;

(2) The integrated design of the equipment structure is simple and compact, with less auxiliary equipment, and all components are processed and assembled in the workshop. Compared with the traditional civil engineering pool, the construction is not affected by the weather, the construction period is short, and the project cost is low;

(3) The total installed power of the equipment is low, the operating cost is low, the water consumption of backwashing is small, and the water consumption rate of suction and washing is less than 1%. The equipment can filter continuously during backwashing, reduce the filtration time, save backwashing equipment, and reduce the cost of supporting equipment ;

(4) The filler in the biological contact oxidation tank and the filter assembly in the ionic fiber filter cloth filter adopt standardized and modular design, with high installation precision, simple and convenient maintenance and replacement, and strong scalability.

Description of drawings

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the enlarged view of the A-A section of Fig. 1;

Fig. 4 is an enlarged view of the section B-B in Fig. 1 .

Marked in the figure, hydrolytic acidification tank 1, manhole 2, biological contact oxidation tank 3, sedimentation tank 4, filter cloth filter tank 5, integrated equipment 6, filler 7, filter frame 8, filter cloth 9, dredging pump 10, Suction pipe 11, washing machine 12, water collecting pipe 13, outlet weir 14, mud discharge tank 15.

Detailed ways

Please refer to Figures 1 to 4, the integrated equipment 6 is equipped with a hydrolysis acidification tank 1, a manhole 2, a biological contact oxidation tank 3, and a sedimentation tank 4, and an additional box is set on it as an ionic fiber filter cloth Filter 5, ionic fiber filter cloth Filter frame 8, fiber filter cloth 9, water collecting pipe 13, mobile crane 12, dredge pump 10 and mud discharge tank 15 are arranged in the filter tank 5. The sewage is hydrolyzed and acidified in the hydrolytic acidification tank 1 to degrade the macromolecular organic matter into small molecular organic matter, and then the biofilm attached to the filler 7 in the biological contact oxidation tank 3 further degrades the organic matter in the sewage, and the output of the biological contact oxidation tank 3 The water contains detached biofilm and a small amount of suspended matter. In the sedimentation tank 4, the detached biofilm and suspended matter settle at the bottom of the tank and are discharged through mud discharge. The clear water flows out through the overflow weir, and the treated water in the sedimentation tank 4 enters by itself. Filter cloth filter 5, the water flow is filtered from both sides of the filter cloth 9 from outside to inside under the action of pressure, and the filtered water is collected by the small holes in the filter frame 8 and the water collection pipe 13 at the bottom, and finally passes through the outlet The weir 14 overflows into the water outlet, and discharges up to the standard through the water outlet.

As the filtration progresses, the suspended matter gradually accumulates on the surface of the filter cloth 9, the filtration speed gradually decreases, and the water level in the pool gradually rises. When the water level rises to the predetermined water level, negative pressure suction backwashing is started, and the filter cloth 9 is fixed during backwashing. With the movement of the mobile washing truck 12 and the start of the dredger pump 10, the filter cloth 9 on the filter plate 9 is started. The sludge is linearly swept and sucked, and the muddy water is sucked out by the mud suction pump 10 through the mud suction pipe 11 and discharged into the sludge pool. After the driving vehicle 12 moves a stroke, the filter cloth 9 is cleaned, and the system can be fully automatic.

Claims (5)

1. A widely used and efficient buried sewage treatment equipment, the equipment is a box structure, divided into three compartments by a partition in the middle; the first compartment is a hydrolytic acidification tank filled with fillers; the second compartment is a biological contact oxidation tank , the tank is filled with filler, and the blower is used to aerate the tank, and the aerated sewage flows through the filler grid to make the filler surface covered with biofilm, and the organic matter is degraded and removed by microorganisms during the contact process between sewage and biofilm; the third grid is the sedimentation tank, The effluent of the biological contact oxidation tank contains detached biofilm and a small amount of suspended matter. In the sedimentation tank, the detached biofilm and suspended matter settle at the bottom of the tank and are discharged through mud discharge. Clean water flows out through the overflow weir to purify the sewage; It is characterized in that a box body is added behind the existing sedimentation tank as a filter cloth filter tank, and fiber filter cloth, water collection pipes, a mobile mud suction system and a mud discharge tank are arranged in the filter tank. 2. The widely used and efficient buried sewage treatment equipment according to claim 1, characterized in that the fiber filter cloth is an ionic fiber filter cloth. 3. The widely used and efficient underground sewage treatment equipment according to claim 2, characterized in that the filter cloth is a special filter cloth capable of retaining particles with a particle size of micron, and the special filter cloth material structure is added ionic charge for wear-resistant brushes. 4. The widely used and efficient buried sewage treatment equipment according to any one of claims 1 to 3, characterized in that the filter cloth is arranged on the filter frame, and the water collection pipe is arranged outside the filter frame, so that The mobile dredging system is a dredging pump, and a flushing crane is also installed in the filter tank. 5. The widely used and efficient buried sewage treatment equipment according to claim 4, characterized in that the filters are arranged on both sides of the filter frame.

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