CN111894080A

CN111894080A - Household rainwater collecting and treating device

Info

Publication number: CN111894080A
Application number: CN202010611781.3A
Authority: CN
Inventors: 夏玉宝; 王�华; 金意倩; 袁伟皓; 曾一川; 李丰铎; 张晓兰
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2020-11-06

Abstract

The invention discloses a household rainwater collecting and treating device, which comprises a water collecting tank for collecting rainwater, wherein the water collecting tank is connected with a rainwater treating device, the rainwater treating device comprises a cabinet body communicated with the water collecting tank, a conveying device for filtering and conveying solid pollutants is arranged in the cabinet body, an aeration device is arranged below the conveying device, the outlet end of the aeration device is communicated with a sludge pool, and the outlet of the sludge pool is connected with a disinfection pool. The device is simple, occupies small space, and produces stable reclaimed water meeting the national standard for users to use through a series of water purification steps after rainwater is collected.

Description

Household rainwater collecting and treating device

Technical Field

The invention relates to a rainwater collecting and treating device, in particular to a household rainwater collecting and treating device.

Background

Along with the increasing increase of contradiction between water resource supply and demand, the value of rainwater resources is more and more recognized, and a plurality of corresponding measures are taken to comprehensively utilize rainwater according to local conditions. The current mode of collecting the rainwater has traditional reinforced concrete and stainless steel cistern, and these two kinds of mode construction process are complicated, and the process is many, and the period is long, is unsuitable for the family to use, and the manpower, materials and financial resources that consume are all great.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a household rainwater collecting and processing device which is simple and occupies small space.

The technical scheme is as follows: the household rainwater collecting and treating device comprises a water collecting tank for collecting rainwater, wherein the water collecting tank is connected with a rainwater treating device, the rainwater treating device comprises a cabinet body communicated with the water collecting tank, a conveying device for filtering and conveying solid pollutants is arranged in the cabinet body, an aeration device is arranged below the conveying device, the outlet end of the aeration device is communicated with a sludge pool, and the outlet of the sludge pool is connected with a disinfection pool.

In order to filter the pollutants on one hand and discharge the pollutants in time on the other hand, the conveying device comprises a grating and a transmission device for controlling the conveying of the grating; in order to collect the conveyed pollutants conveniently, a storage box for containing the solid pollutants is arranged at the tail end of the conveying device; the storage box can be pulled on the cabinet body.

In order to further filter the rainwater transmitted from the conveying device, a water filtering device is arranged between the conveying device and the aeration device.

Preferably, the aeration device comprises aeration pipes which are transversely arranged at intervals and provided with water inlets and air inlets, and the air inlets of the aeration pipes are connected with an air pump and used for introducing air into the aeration pipes; through holes are arranged on the aeration pipe at intervals.

In order to further improve the treatment effect on rainwater, an MBR (membrane bioreactor) membrane assembly for filtering is arranged in the activated sludge tank, and a water outlet of the MBR membrane assembly is communicated with the disinfection tank.

Preferably, a controller for controlling air intake of the aeration device and controlling rainwater to flow into the disinfection tank is arranged outside the cabinet body.

Preferably, a movable cover plate is arranged at the top of the water collecting tank.

Has the advantages that: compared with the prior art, the invention can obtain the following beneficial effects: 1. the device is simple, the occupied space is small, and stable reclaimed water meeting the national standard is produced through a series of water purification steps after rainwater is collected for users to use; 2. the device is obvious in templating, and is convenient for users to use and maintain daily; 3. by adopting the MBR process, the rainwater purification degree and efficiency are obviously improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the rainwater treatment device of the present invention;

fig. 3 is a schematic view of the water collecting tank of the present invention in a state that the cover is opened.

Detailed Description

The invention is described in further detail below with reference to the drawings.

As shown in fig. 1 to 3, the household rainwater collecting and processing device comprises a water collecting tank 15, a movable cover 16 is arranged on the top of the water collecting tank 15, the water collecting tank 15 can be fixed under an eave through fixing screws during installation, and is connected with the rainwater processing device 1 through a water pipe 15, when the rainwater is not rained, the cover 16 is closed, so that the rainwater can be prevented from blocking pipelines due to falling leaves and other substances, and when the rainwater is rained, the cover 16 is opened, so that the rainwater collecting area is increased. Rainwater processing apparatus 1 includes the cabinet body, and the top of the cabinet body is equipped with the water inlet, and it is equipped with the conveyer that is used for filtering and conveying solid pollutant to lie in the water inlet below in the cabinet body, and conveyer includes grid 2 and the transmission 3 of control grid conveying, and grid 2 is flexible grid, and grid 2 and transmission 3 constitute the conveyer belt, and in the filterable time, stay the solid pollutant that mixes in the rainwater on the conveyer belt and shift away. The terminal that lies in conveyer on the cabinet body is equipped with the receiver 10 that is used for collecting solid pollutant, but receiver 10 pull is convenient for in time pour the pollutant. A water filtering device 9 is arranged below the conveying deviceThe fine grating is used for secondarily filtering rainwater, an aeration device is arranged below the fine grating and comprises aeration pipes which are transversely arranged at intervals and provided with water inlets and air inlets, the air inlets of the aeration pipes are connected with an air pump and used for introducing air into the aeration pipes, and the air pump is a full-automatic air pump. The connection between the air pump 5 and the aeration pipe 8 is also provided with a check valve 4A to prevent the water-vapor mixture from flowing back. The water inlet of the aeration pipe is connected with the fine grid through a pipeline, a check valve 4B is arranged on the pipeline, and rainwater filtered by the fine grid enters the aeration pipe through the check valve 4B. The below of aeration equipment is equipped with sludge impoundment 6, sludge impoundment 6 inside is equipped with MBR membrane module 7 and constitutes the filtering area, MBR membrane module 7's delivery port passes through the pipeline and sets up the disinfection pond intercommunication outside the cabinet, is provided with the suction pump on the pipeline for take out the rainwater after MBR membrane module 7 filters to disinfect in the disinfection pond, and ultraviolet ray degassing unit 12 is installed at the top in disinfection pond, can get rid of the virus and the bacterium in aquatic effectively, and the water after the disinfection can be used as the normal water. The experimental data show that compared with the raw water, the COD content of the water after the MBR process is lower than 25mg/L, and the BOD₅Content less than 5mg/L, NH₃N is lower than 8 and SS is lower than 5. An operable controller is arranged outside the cabinet body and is used for controlling the full-automatic air pump and the water pump so as to control the air inlet of the aeration device and control the rainwater to flow into the disinfection tank. The size of the rainwater collector can be freely increased and decreased under the condition that the maximum load of the full-automatic air pump and the water suction pump is not exceeded, and each part can be customized. PVC material can be used for each pipeline and the main body of the aeration pipe, a full-automatic air pump can be used, and the power of the water pump can be set to be 700-1400W. The size of the main body of the rainwater treatment device 1 can be set to 1.5M × 1M; the rainwater collector can be a wall-mounted type, and the size of the main body is 2 Mx 1M; the size of the cover is 1 Mx 1M, and ABS plastic is adopted. MBR membrane module adopts the plate and frame formula, and the user also can customize as required.

The working process is as follows: rainwater flows into the water collecting tank, flows into the conveying belt formed by the grating 2 and the transmission device 3 from the water inlet on the cabinet body through the pipeline 15, solid pollutants mixed in the rainwater are left on the conveying belt while filtering, and when the conveying belt passes through the collecting box 10, the solid pollutants attached to the conveying belt can be left in the collecting box 10. In the rainwater after filtering through flexible grid passed through check valve 4B and gets into the aeration pipe, full-automatic air pump 5 can let in the aeration pipe 8 with the air to make the air come out from the even aperture of distribution on the aeration pipe 8, let air and rivers intensive mixing, air pump 5 also has a check valve 4A with the junction of aeration pipe 8, prevents the steam and water mixture backward flow. The rivers through the aeration pipe are under the effect of gravity, flow to activated sludge tank 6, can follow and get rid of the biochemical organic matter of solubility and colloidal state in the sewage, and can be by activated sludge adsorption's suspended solid and some other matters, the rainwater that flows into sludge tank filters once more through the filtering area that MBR membrane module 7 constitutes, the rainwater passes through suction pump 11 and extracts the water of handling from the filtering area and gets into disinfection pond 13, virus and the bacterium in the aquatic can be got rid of effectively to ultraviolet ray disinfection device 12 in disinfection pond 13, the water after the disinfection can be regarded as the normal water, utilize.

Claims

1. The utility model provides a domestic rainwater is collected and rainwater processing apparatus, is including the header tank that is used for collecting the rainwater, the header tank is connected with rainwater processing apparatus, its characterized in that, rainwater processing apparatus includes the cabinet body with the header tank intercommunication, and the cabinet is internal to be equipped with the conveyer that is used for filtering and conveying solid pollutant, the conveyer below is equipped with aeration equipment, and aeration equipment's exit end intercommunication sludge impoundment, sludge impoundment's exit linkage has disinfection pond.

2. A domestic rainwater collection and treatment apparatus according to claim 1 wherein said conveying means includes a grille and drive means for controlling the conveyance of the grille.

3. A domestic rainwater collection and treatment apparatus according to claim 1 wherein the end of said transfer means is provided with a holding box for solid contaminants.

4. A domestic rainwater collection and processing unit according to claim 3 wherein said storage box is retractable on the cabinet.

5. A domestic rainwater collection and treatment apparatus according to claim 1 wherein water filtering means is provided between the transfer means and the aeration means.

6. A domestic rainwater collection and treatment apparatus according to claim 1 wherein said aeration means includes aeration tubes having water inlets and air inlets laterally spaced apart and connected to an air pump for supplying air into the aeration tubes.

7. The domestic rainwater collection and treatment apparatus of claim 6 wherein said aerator pipe is spaced apart to provide perforations.

8. The domestic rainwater collecting and processing device according to claim 1, wherein said activated sludge tank is provided with an MBR membrane module for filtering, and the water outlet of said MBR membrane module is communicated with the disinfection tank.

9. A domestic rainwater collection and treatment apparatus according to claim 1 wherein a controller is provided externally of the cabinet for controlling the aeration means to admit air and for controlling the flow of rainwater into the disinfection tank.

10. A domestic rainwater collection and treatment unit according to claim 1 wherein said water collection tank is topped with a removable cover.