CN219507776U - Sewage treatment system - Google Patents

Abstract

The utility model discloses a sewage treatment system, which comprises a grid bin, a sand setting bin, an adjusting bin and a sludge concentration bin which are sequentially arranged, wherein water passing holes are formed in the adjacent side walls of the grid bin, the sand setting bin, the adjusting bin and the sludge concentration bin, supernatant fluid of the sludge concentration bin returns to the adjusting bin, a biochemical bin comprises a pre-denitrification bin, an anaerobic bin, an anoxic bin, an MBBR (moving bed biofilm reactor) bin, a sedimentation bin and a clear water bin which are sequentially connected, a lifting pump is further arranged in the adjusting bin, the lifting pump is used for pumping liquid in the adjusting bin into the pre-denitrification bin, an aeration device and an MBBR device are arranged in the MBBR bin, and a low-power mode operation mode and a high-power mode operation mode are adopted according to sewage quantity. The utility model adopts the container integrated sewage treatment equipment, has small occupied area, can be buried and moved, is convenient for greening and has no breeding of mosquitoes and flies; adopts two modes of high power and low power, thereby reducing the construction cost of the sewage station.

Description

Sewage treatment system

Technical Field

The utility model belongs to the technical field of domestic sewage treatment, and particularly relates to a sewage treatment system.

Background

Compared with urban areas, villages and towns are relatively scattered, and the density of the sewage pipe network in unit area is far smaller than that of the urban areas, so that unified collection and centralized treatment are difficult. Because there is no unified sewage pipeline and there is the problem of random discharge, and general sewage can all be discharged to discharge river, pond, still many domestic sewage can ooze into soil. In some areas, a centralized sewage treatment system is created, but the cost for laying a sewage pipe network in villages and towns is high, the sewage variation in villages and towns is large in the utilization condition, workers go out in a certain month, the workers are reduced, and the sewage amount is reduced. Holidays and crop harvesting time period, the number of people is increased, and the sewage amount is increased. Resulting in a low load operation of the sewage station during usual periods and an increase in the amount of sewage station water during holidays, which makes the amount of sewage severely mismatched with sewage treatment facilities.

Disclosure of Invention

In order to solve the problems, the utility model discloses a sewage treatment system which comprises a grid bin, a sand setting bin, an adjusting bin and a sludge concentration bin which are sequentially arranged, wherein the grid bin is communicated with a sewage pipe network, water passing holes are arranged on the adjacent side walls of the grid bin, the sand setting bin, the adjusting bin and the sludge concentration bin, supernatant of the sludge concentration bin returns to the adjusting bin,

the biochemical treatment device also comprises a biochemical bin, wherein the biochemical bin comprises a pre-denitrification bin, an anaerobic bin, an anoxic bin, an MBBR bin, a sedimentation bin and a clear water bin which are sequentially connected, a lifting pump is further arranged in the regulating bin and used for pumping liquid in the regulating bin into the pre-denitrification bin, the MBBR bin is provided with aeration equipment and MBBR equipment,

a fourth water passing hole and a fifth water passing hole are formed in the side wall of each biochemical bin, the elevation of the fourth water passing hole is lower than that of the fifth water passing hole, a gate valve is arranged on the fourth water passing hole, when the sewage amount is lower than a set limit value, the gate valve is opened, so that the biochemical bin passes through fourth water passing Kong Guoshui, and the aeration equipment and the MBBR equipment are operated in a low-power mode; when the sewage amount is higher than the set limit value, the gate valve is closed, so that the biochemical bin runs in a high-power mode through fifth water passing Kong Guoshui, and the aeration equipment and the MBBR equipment.

Optionally, the low power mode and the high power mode are switched by a set of devices using a tuning device frequency.

Optionally, the low power mode and the high power mode are the low power mode and the high power mode respectively correspond to a set of devices.

Optionally, a gap is formed at the upper end of the side wall of the regulating bin adjacent to the sludge concentration bin, so that liquid in the regulating bin enters the sludge concentration bin through the gap, a third water passing hole is formed in the side wall below the gap, a gate valve is arranged on the third water passing hole, the gate valve on the third water passing hole is opened after precipitation, and supernatant in the sludge concentration bin returns to the regulating bin through the third water passing hole.

Optionally, the clean water bin is also connected with a discharge channel through which clean water is discharged.

Optionally, the side walls of the sand setting bin, the sludge concentration bin and the sedimentation bin have surfaces inclined to the inner side.

Optionally, a first water passing hole is arranged between the grid bin and the sand setting bin, a second water passing hole is arranged between the sand setting bin and the adjusting bin, and the elevations of the first water passing hole and the second water passing hole are the same;

and the elevation of the third water passing hole between the adjusting bin and the sludge concentration bin is higher than that of the second water passing hole.

The utility model adopts the container integrated sewage treatment equipment, has small occupied area, can be buried and moved, is convenient for greening and has no breeding of mosquitoes and flies; in particular, the utility model adopts a high power mode and a low power mode, which correspond to the sewage quantity reduction period and the sewage quantity increase period, and reduces the repeated construction cost of the sewage station.

Drawings

Fig. 1 is a schematic diagram of a sewage treatment system according to an embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The sewage treatment system of this embodiment, including grid bin 10, sand setting bin 20, regulation bin 30, sludge concentration bin 40 and biochemical bin 70 that arrange in proper order, can integrate into the form of container. Wherein, the water inlet of the grid bin 10 is provided with a grid, and the water inlet is communicated with a sewage pipe network and is used for removing larger particle suspended matters and floating impurities in the sewage and preventing the water pump from being blocked. The system can integrate all the bins into a skid-mounted container type, and can be buried or transported to a required position at any time according to the needs.

The side wall of the grid bin 10 adjacent to the sand setting bin 20 is provided with a first water passing hole 101, water reaching the elevation of the first water passing hole 101 enters the sand setting bin 20 through the first water passing hole 101, and sediment such as some gravel is deposited at the bottom of the sand setting bin 20 through sedimentation. Preferably, the side walls of the sand settling bin have inwardly sloped surfaces to facilitate sand settling. The adjacent side walls of the sand setting bin 20 and the adjusting bin 30 are provided with second water passing holes 102, and water in the sand setting bin enters the adjusting bin 30 after reaching the elevation of the second water passing holes 102.

An adjustor can be placed within the adjustment bin 30 to adjust the Ph of the water within the adjustment bin to a suitable Ph, for example to a Ph of 6-8. Preferably, the elevation of the water passing holes of the grid bin, the sand setting bin and the adjusting bin is the same.

The upper end of the side wall of the regulating bin 30 adjacent to the sludge concentration bin 40 is provided with a notch, so that liquid in the regulating bin 30 enters the sludge concentration bin 40 through the notch, a third water passing hole 103 is formed in the side wall below the notch, a gate valve is arranged on the third water passing hole 103, sediment in the liquid is deposited at the bottom in the sludge concentration bin, after a period of deposition, the gate valve on the third water passing hole 103 is opened, and supernatant on the upper part can return to the regulating bin 30 through the third water passing hole 103.

Still be provided with the elevator pump 60 in adjusting the storehouse 30, the elevator pump 60 is used for letting in liquid to biochemical storehouse 70, biochemical storehouse 70 includes the pre-denitration storehouse 701, anaerobic storehouse 702, anoxic storehouse 703, MBBR storehouse 704, deposit storehouse 705 and clear water storehouse 707 that connect gradually, the delivery port and the pre-denitration storehouse 701 intercommunication of elevator pump 60. The pre-denitrification bin 701 is used for receiving the sewage from the regulation bin 30, fully removing nitrate and oxygen under the anoxic condition and strengthening anaerobic phosphorus release of the phosphorus accumulating bacteria. Anaerobic bin 702 is a structure for anaerobic treatment, and sewage is degraded into simple inorganic matters by anaerobic microorganisms under anaerobic conditions. The anoxic bin 703 uses denitrifying bacteria to perform denitrification under low dissolved oxygen concentration, and simultaneously provides partial alkalinity for denitrification, thus providing favorable conditions for the subsequent nitrification in the aerobic tank. The MBBR bin 704 is provided with an aeration device and an MBBR device, the MBBR device is based on the basic principle of a biomembrane method, a certain amount of suspended fillers 71 are arranged in the MBBR device, biomass and biological species in the reactor are improved, so that the treatment efficiency of the reactor is improved, the bottom of the MBBR bin is also provided with the aeration device 72, the aeration device 72 supplies oxygen to the MBBR bin through aeration, and meanwhile, the aeration device also has a mixing and stirring function, so that the mass transfer condition of pollutants in a water treatment system is enhanced, and the treatment effect is improved. The sedimentation bin 705 performs mud-water separation. The clear water after the sedimentation treatment in the sedimentation bin enters a clear water bin 707. The liquid in the sump 707 has reached the discharge standard and can enter the discharge channel 709 for discharge.

Further, the side walls of each bin of the biochemical bin 70 are provided with an upper water passing hole and a lower water passing hole, namely a fourth water passing hole 104 and a fifth water passing hole 105, a gate valve is arranged on the fourth water passing hole 104, when the sewage amount is reduced, if the sewage amount is lower than a set limit value, the biochemical bin 70 adopts the fourth water passing hole 104 with a low elevation to feed water, and the aeration equipment and the MBBR equipment can meet the operation working condition by adopting low-power equipment; when the sewage quantity is increased, if the sewage quantity is higher than the set limit value, the gate valve of the fourth water passing hole 104 is closed, and the biochemical bin 70 adopts the fifth water passing hole 105 with high elevation to feed water. The aeration equipment and the MBBR equipment use high-power equipment to maintain the sludge concentration and the dissolved oxygen in the biochemical bin and ensure that the quality of the effluent reaches the standard. The set limit may be empirically set or determined from a number of experiments. And the low power device and the high power device can be converted by a set of devices by adjusting the frequency of the devices. Or the low power mode and the high power mode may be respectively corresponding to a set of devices.

In addition, there is a room 708 in which a disinfection device and an electric control cabinet are disposed, the disinfection device can add disinfectant into the clean water bin, and the electric control cabinet is used for being connected with the aeration device, the MBBR device, the gate valve and the like to provide power for the disinfection device.

Of course, the present utility model is capable of other various embodiments and its several details are capable of modification in accordance with the present utility model by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (7)

1. A sewage treatment system is characterized by comprising a grid bin, a sand setting bin, an adjusting bin and a sludge concentration bin which are sequentially arranged, wherein the grid bin is communicated with a sewage pipe network, water passing holes are arranged on the adjacent side walls of the grid bin, the sand setting bin, the adjusting bin and the sludge concentration bin, supernatant of the sludge concentration bin returns to the adjusting bin,

the biochemical treatment device also comprises a biochemical bin, wherein the biochemical bin comprises a pre-denitrification bin, an anaerobic bin, an anoxic bin, an MBBR bin, a sedimentation bin and a clear water bin which are sequentially connected, a lifting pump is further arranged in the regulating bin and used for pumping liquid in the regulating bin into the pre-denitrification bin, the MBBR bin is provided with aeration equipment and MBBR equipment,

a fourth water passing hole and a fifth water passing hole are formed in the side wall of each biochemical bin, the elevation of the fourth water passing hole is lower than that of the fifth water passing hole, a gate valve is arranged on the fourth water passing hole, when the sewage amount is lower than a set limit value, the gate valve is opened, so that the biochemical bin passes through fourth water passing Kong Guoshui, and the aeration equipment and the MBBR equipment are operated in a low-power mode; when the sewage amount is higher than the set limit value, the gate valve is closed, so that the biochemical bin runs in a high-power mode through fifth water passing Kong Guoshui, and the aeration equipment and the MBBR equipment.

2. The wastewater treatment system of claim 1, wherein the low power mode and the high power mode are switched by a set of equipment using an adjusted equipment frequency.

3. The wastewater treatment system of claim 1, wherein the low power mode and the high power mode are the low power mode and the high power mode respectively correspond to a set of equipment.

4. The sewage treatment system of claim 1, wherein a gap is formed in the upper end of the side wall of the regulating bin adjacent to the sludge concentration bin, so that the liquid in the regulating bin enters the sludge concentration bin through the gap, a third water passing hole is formed in the side wall below the gap, a gate valve is arranged on the third water passing hole, the gate valve on the third water passing hole is opened after precipitation, and the supernatant in the sludge concentration bin returns to the regulating bin through the third water passing hole.

5. The wastewater treatment system of claim 1, wherein the clean water sump is further connected to a discharge channel through which clean water is discharged.

6. The wastewater treatment system of claim 1, wherein the side walls of the grit chamber, sludge concentration chamber, and sedimentation chamber have inwardly sloped surfaces.

7. The wastewater treatment system of claim 4, wherein a first water hole is formed between the grid bin and the sand settling bin, a second water hole is formed between the sand settling bin and the adjusting bin, and the elevations of the first water hole and the second water hole are the same;

and the elevation of the third water passing hole between the adjusting bin and the sludge concentration bin is higher than that of the second water passing hole.