CN203212438U - Micro-power countryside decentralized-type sewage treatment device - Google Patents

Abstract

The utility model relates to a micro-power countryside decentralized-type sewage treatment device. The device comprises a grilled well, a hydrolysis acidification pool, an adjusting pool, a bacteria filtering pool and an underflow-type constructed wetland. A water inlet port is arranged in front of a grille. An outlet of the grilled well is communicated with an inlet on the upper portion of the hydrolysis acidification pool. A plurality of strings of suspended combination packings are arranged in the hydrolysis acidification pool. A flow guide partition is arranged at the inlet of the hydrolysis acidification pool communicated with the upper portion of the adjusting pool. A sewage lifting pump is arranged at the bottom of the adjusting pool. Filtering packings capable of being hung with biological membranes are filled in the bacteria filtering pool. A rotatable water distributing device with a motor is arranged at the top of the bacteria filtering pool. Air holes are formed at the bottom of the bacteria filtering pool. An outlet of the sewage lifting pump is communicated with an inlet of the rotatable water distributing device. The lower portion of the bacteria filtering pool is communicated with an inlet on the lower portion of the constructed wetland. A water outlet port is arranged on the rear portion of the constructed wetland. Anaerobic treatment, natural-ventilation aerobic treatment and constructed-wetland treatment are combined, so that effluent quality is up to standard, investment is small, energy consumption is low, process is simple, convenience in operation and management is realized, treatment effect is good, and benefit of ecological environment is obvious.

Description

Micro power rural decentralized sewage treatment device

technical field

The utility model belongs to the technical field of sewage biological treatment, relates to a sewage treatment device, in particular to a micro-power rural decentralized sewage treatment device.

Background technique

In recent years, in order to promote the process of urbanization and improve the quality of life of rural residents, rural water supply projects have been gradually implemented. However, rural drainage projects have been neglected. Most of the rural domestic sewage is directly discharged into rivers or rivers without any treatment. Let it infiltrate into the ground after being discharged from the outdoor space, and a small part is allowed to infiltrate into the ground after simple treatment in a septic tank, seriously polluting river water and well water.

In rural areas, there is a serious shortage of sewage maintenance and management technicians and operation management experience, which determines that the construction of sewage stations cannot use complex treatment processes, and the economic conditions are relatively poor. Sewage operating costs must be reduced, so micro-power, or even no power is used. Power sewage treatment process is a better way out. Generally, the non-powered sewage treatment process is anaerobic treatment, such as septic tanks, oxidation ponds, etc. The effluent quality is generally not up to standard, and the problems of mosquitoes and odor are serious, which affects the environment.

Utility model content

The purpose of the utility model is to provide a micro-power rural decentralized sewage treatment device to solve the problems that the effluent quality of the existing rural non-powered sewage treatment cannot reach the standard.

The technical scheme of the utility model is as follows:

The utility model is a micro-power rural decentralized sewage treatment device, which includes a sequentially connected grid well, a hydrolysis acidification tank, a regulating tank, a biological filter and an underflow artificial wetland; a grid is arranged in the grid well, and a sewage water inlet It is located in the middle of the grid well in front of the grid; the outlet of the grid well behind the grid is connected with the entrance of the upper part of the hydrolysis acidification tank; the entrance of the hydrolysis acidification tank is provided with a diversion partition; the hydrolysis acidification tank is equipped with multiple strings of suspension Combined packing; the outlet of the upper part of the hydrolysis acidification tank is connected to the upper inlet of the regulating tank; the bottom of the regulating tank is equipped with a sewage lifting pump; the biofilter is filled with filter packing (cobblestone, gravel, lightweight porous ceramsite packing, etc.) that can hang biofilms ), there is a rotary water distributor with a motor on the top of the biofilter, there are many sprinkler holes on the rotary water distributor, and there are ventilation holes at the bottom of the biofilter; the outlet of the sewage lifting pump passes through the sewage pipe and the top of the biofilter The inlet of the rotary water distributor is connected; the outlet of the lower part of the biofilter is connected to the lower inlet of the submerged artificial wetland by pipes;

The beneficial effects of the utility model:

The utility model is an integrated equipment composed of a grid well, a hydrolytic acidification pool, a regulating pool, a biological filter pool and a subsurface artificial wetland, and has a short construction period, a small occupied area, and convenient installation and maintenance.

The utility model combines anaerobic treatment, natural ventilation aerobic treatment and artificial wetland treatment to explore a micro-dynamic sewage treatment process, and the effluent quality meets the "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002) II Class standard, low energy consumption, effluent water quality meets the water requirements of rural areas, low investment, low energy consumption, simple process, convenient operation and management, good treatment effect, and remarkable ecological and environmental benefits.

Description of drawings

Fig. 1 is a structural schematic diagram of a micro-power rural decentralized sewage treatment device of the present utility model.

In the figure: A-Water inlet B-Water flow direction C-Water outlet

1-Grille Well 2-Grille 3-Diversion Partition 4-Suspension Combined Packing

5- Hydrolytic acidification tank 6- Regulating tank 7- Sewage lifting pump 8- Sewage pipe

9-air vent 10-biological filter 11-motor 12-rotary water distributor

13-Sprinkling hole 14-Filter packing that can hang biofilm

15-Filter material 16-Constructed wetland matrix 17-Subsurface flow constructed wetland 18-Water outlet well

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

As shown in Figure 1, the utility model is a micro-power rural decentralized sewage treatment device, which includes a grid well 1 connected in sequence, a hydrolysis acidification tank 5, a regulating tank 6, a biological filter tank 10 and a submerged artificial wetland 17 ;Grille 2 is set in the grid well 1, and the sewage inlet A is set in the middle of the grid well in front of the grid; There is a diversion partition 3; the hydrolytic acidification tank 5 is provided with multiple strings of suspended composite fillers 4; the outlet of the upper part of the hydrolytic acidification tank is connected with the inlet of the upper part of the adjustment tank; the bottom of the adjustment tank 6 is provided with a sewage lifting pump 7; the biofilter 10 is filled with filter packing 14 (pebbles, gravels, lightweight porous ceramsite fillers, etc.) that can hang biofilms. There is a rotary water distributor 12 that can rotate with a motor 11 on the top of the biofilter. Distributed on the rotary water distributor are Many sprinkling holes 13, the bottom of the biofilter is provided with a vent 9; the outlet of the sewage lift pump 7 communicates with the inlet of the rotary water distributor on the top of the biofilter through a long sewage pipe 8; the outlet of the bottom of the biofilter is connected to the subsurface flow The bottom entrance of the subsurface constructed wetland 17 is filled with filter material 15 (quartz sand, gravel, etc.) in the front area, and the constructed wetland matrix 16 is filled in the middle area. It is soil, and aquatic plants are planted on the soil, and the rear area is the water outlet well 18; the water outlet C is arranged on the upper part of the water outlet well.

The operation process and working principle of this device are as follows:

Raw sewage water enters the grille, and large-scale debris such as fibers, slag, and waste paper in the sewage are intercepted outside the system through the grille, so as to avoid clogging and affecting the treatment of sewage facilities in the later stage, and the grid slag is cleaned regularly . Then it enters the hydrolytic acidification tank, and the sewage stays for 2 to 4 hours. The hydrolytic acidification tank is equipped with suspended composite fillers. The organic matter that is difficult to biodegrade is transformed into organic matter that is easy to biodegrade, and the biodegradability of sewage is improved to facilitate subsequent aerobic treatment. A diversion plate is set at the entrance of the hydrolytic acidification tank to allow the sewage to enter from the bottom of the hydrolytic acidification tank, to prevent short flow of sewage, and to make the suspended composite filler in the hydrolysis acidification tank play a better role.

Then it enters the regulating tank to buffer the water volume, uniform the water quality, avoid the impact of impact load on the subsequent biochemical treatment, and evenly transport the sewage to the biofilter. Spray the sewage evenly on the filter packing through the rotary water distributor on the biological filter. The filter packing is made of pebbles, gravel, porous ceramsite, etc., and the filter packing and the biofilm attached to it are used as the treatment medium to fully exert Biological metabolism, physical filtration, physical and chemical adsorption of membranes and fillers, and multi-stage biological predation in the reactor can realize the removal of pollutants in the same unit reactor. Vents are set under the filter to supply oxygen to the biofilm through natural ventilation.

The sewage treated by the filter enters the subsurface constructed wetland, mainly using the physical, chemical and biological synergies of soil, artificial media, plants and microorganisms to denitrify and dephosphorize the sewage, biodegrade and filter the sewage to make the effluent meet the standard .

The technical scheme of a micro-power rural decentralized sewage treatment device of the utility model is not limited to the scope disclosed in the above-mentioned embodiments. Other alternative implementations made by those skilled in the art according to the implementation of this embodiment and combined with common knowledge also belong to this invention. The scope of technical solutions for utility models.

Claims (3)

1. a microkinetic rural area decentralized type sewage treatment unit is characterized in that, it comprises grille well, hydrolysis acidification pool, equalizing tank, biological filter and the underflow type artificial wet land that order is connected; Grid is set in the grille well, and sewage inlet is located at the grille well middle part in grid the place ahead; The grille well outlet that is located at the grid rear is communicated with the entrance on hydrolysis acidification pool top; The hydrolysis acidification pool ingress is provided with diaphragm; Be provided with many strings in the hydrolysis acidification pool and hang combined stuffing; The outlet on hydrolysis acidification pool top is communicated with the entrance on equalizing tank top; The equalizing tank bottom is provided with sewage pump; Filling can be hung biomembranous filter packing in the biological filter, and a translator rotatable rotary water distributor is arranged at the top, biological filter, is distributed with many water sprayering holes on the turning spurt water device, and the bottom, biological filter is provided with ventilating pit; The sewage pump outlet is communicated with the turning spurt water device entrance at top, biological filter by waste pipe; The biological filter lower part outlet is communicated to underflow type artificial wet land bottom entrance with pipeline; Water outlet is located at the wet well top, rear portion of underflow type artificial wet land.

2. microkinetic according to claim 1 rural area decentralized type sewage treatment unit is characterized in that, described to hang biomembranous filter packing be pebbles, gravel or light porous ceramics filling.

3. microkinetic according to claim 1 and 2 rural area decentralized type sewage treatment unit, it is characterized in that, described underflow type artificial wet land front area filling quartz sand or gravel, central region filling artificial swamp matrix, artificial swamp matrix bottom is pebbles or gravel, top is earth, has planted waterplant on the earth.

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