CN203794751U - Rainwater harvesting cellar water pretreatment and advanced treatment integrated system - Google Patents

Abstract

The utility model relates to a rainwater harvesting cellar water pretreatment and advanced treatment integrated system which comprises a horizontal type hydraulic-cyclone sand removing device, a manual ecological sewage stopping system, a water cellar, a rough filtering pool, a biological slow filtering pool and a clean water tank. A rainwater harvesting water inlet is formed in one side of the horizontal type hydraulic-cyclone sand removing device, the other side of the horizontal type hydraulic-cyclone sand removing device is connected with a water distributing ditch which is communicated with the manual ecological sewage stopping system, the manual ecological sewage stopping system is connected with the water cellar, and a water pump is arranged in the water cellar; the water pump is communicated with the bottom of the rough filtering pool through a water outlet pipe I, a water outlet pipe II is arranged at the top end of the rough filtering pool, the tail end of the water outlet pipe II stretches into the upper end of the biological slow filtering pool, and a water outlet pipe III is arranged at the bottom of the biological slow filtering pool and connected with the clean water tank. The integrated system is simple in technological process, low in operation cost, convenient to operate and manage, stable in water drainage and high in efficiency, and can be used for drinking water treatment of rainwater harvesting cellars at the northwest rural area.

Description

Integrated system for rain cellar water pre-treatment and advanced treatment

technical field

The utility model relates to the applicable technical field of rain-collecting drinking water safety guarantee in northwest villages and towns, in particular to an integrated system for pre-treatment and advanced treatment of rain-collecting cellar water.

Background technique

Surface water and groundwater are extremely scarce in the arid and semi-arid areas of Northwest my country. Rainwater harvesting cellars are basically popularized as the main source of drinking water in this area, and the quality of cellar water is directly related to people's health. Because the rain-collecting surface of the water cellar is easily polluted by the ground environment, the turbidity, organic matter and total bacteria value of the initial rain-collecting cellar water often cannot meet the relevant sanitary standards for drinking water. At present, there is no effective water treatment mode for rainwater cellars, and the safety of drinking water has become an important factor restricting the economic and social development of this area. In view of the rainwater quality, seasonality, spatiotemporal heterogeneity and water quality instability, it is necessary to develop a reasonable and effective water treatment model to solve the problem of drinking water safety in this area.

Utility model content

The technical problem to be solved by the utility model is to provide an integrated system for pre-treatment and advanced treatment of rain-collecting cellar water, which is simple in operation, reliable in operation, reasonable and effective.

In order to solve the above problems, the integrated system for pre-treatment and advanced treatment of rainwater cellar water described in the utility model is characterized in that: the system includes a horizontal hydrocyclone desander, an artificial ecological sewage interception system, a water cellar, a rough filter tank, biological slow filter tank and clean water tank; one side of the horizontal hydrocyclone desander is provided with a rainwater inlet, and the other side is connected with a water distribution channel, which is connected with the artificial ecological sewage interceptor The system is connected; the artificial ecological sewage interception system is connected with the water cellar, and a water pump is provided in the water cellar; the water pump communicates with the bottom of the coarse filter tank through the outlet pipe I, and the top of the coarse filter tank is provided with an outlet Water pipe II; the end of the outlet pipe II extends into the upper end of the biological slow filter; the bottom of the biological slow filter is provided with an outlet pipe III, which is connected to the clean water tank.

The horizontal hydrocyclone desander is evenly distributed with deflectors and screens, and is connected to the distribution channel through the connecting pipe I.

One side of the distribution channel is provided with a water hole, and communicates with the top of the artificial ecological sewage interception system through the water hole.

The artificial ecological sewage interception system consists of turf, cultivation soil, geotextile I, gravel, seepage pipe, geotextile II, and raw soil compaction from the surface to the inside; the end of the seepage pipe is connected to the water cellar through the connecting pipe II. connected at the top.

The outlet pipe I is provided with a valve I.

The bottom of the coarse filter tank is provided with a vent pipe, and a filter material layer I and a supporting layer I are arranged in it from top to bottom; The thickness is 300mm, 10~20mm, the thickness is 300mm, 20~30mm, the thickness is 400mm, 30~50mm, and the thickness is 400mm. It is composed of 300mm pebbles; the vent pipe is provided with a valve IV.

The outlet pipe II is provided with a valve II.

The biological slow filter is provided with filter material layer II and support layer II from top to bottom; the filter material layer II is composed of quartz sand with a particle size of 0.25~0.5mm and a thickness of 1m; the support layer Layer II consists of four layers of pebbles with a particle size of 1-2 mm and a thickness of 50 mm, 2-4 mm and a thickness of 50 mm, 4-8 mm and a thickness of 100 mm, and 8-16 mm and a thickness of 100 mm.

The outlet pipe III is provided with a valve III.

Slow/controlled release disinfectant is added in the clean water tank.

Compared with the prior art, the utility model has the following advantages:

1. Since the utility model is equipped with a horizontal hydrocyclone desander, it can effectively remove large particles of impurities in the rain collection and reduce the pollution load of the subsequent processing unit.

2. Since the utility model is equipped with an artificial ecological sewage interception system specially designed for the characteristics of the uncertainty of rainfall and the change of water volume, the utility model operates stably, has strong impact load resistance, and is resistant to turbidity, SS, Ammonia nitrogen, the total number of bacteria and Escherichia coli all had good removal effects.

3. Since the utility model adopts the coarse filter as the pretreatment system of the slow filter, the water quality of the effluent of the slow filter is guaranteed, and the operation period of the slow filter is prolonged.

4. Since the utility model is equipped with a biological slow filter, it can effectively treat micro-polluted water and remove common pollutants in water such as turbidity, color, odor, organic matter, ammonia nitrogen, heavy metals and bacteria.

5. The utility model has simple technological process, low operating cost and convenient operation and management. It can not only effectively remove pollutants such as turbidity, chromaticity, ammonia nitrogen, organic matter, heavy metals and bacteria in rural rain cellar water, but also has stable water output, With the advantages of high efficiency, easy popularization and application, etc., it can be completely used for drinking water treatment of rain cellar water in rural areas of Northwest China.

Description of drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail.

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

In the figure: 1—horizontal hydrocyclone desander 2—artificial ecological sewage interception system 3—water cellar 4—coarse filter 5—biological slow filter 6—clean water tank 7—rainwater collection inlet 8—deflector 9—screen 10—connecting pipe Ⅰ 11—distribution channel 12—water hole 13—turf 14—culture soil 15—geotextile Ⅰ 17—geotextile Ⅱ 16—gravel 18—original soil compaction 19—seepage pipe 20—connection Pipe Ⅱ 21—water pump 22—outlet pipe Ⅰ 23—valve Ⅰ 24—filter material layer Ⅰ 25—supporting layer Ⅰ 26—vent pipe 27—valve Ⅳ 28—water outlet pipe Ⅱ 29—valve Ⅱ 30—filter material layer Ⅱ 31—supporting layer II 32—outlet pipe III 33—valve III.

Detailed ways

As shown in Figure 1, the rain cellar water pre-treatment and advanced treatment integrated system, the system includes horizontal hydrocyclone desander 1, artificial ecological sewage interception system 2, water cellar 3, coarse filter tank 4, biological slow filter tank 5 and clean water tank 6.

One side of the horizontal hydrocyclone desander 1 is provided with a rainwater inlet 7, and the other side is connected with a distribution channel 11, and the distribution channel 11 communicates with the artificial ecological sewage interception system 2; the artificial ecological sewage interception system is connected to the water The cellar 3 is connected, and the water cellar 3 is provided with a water pump 21; the water pump 21 communicates with the bottom of the coarse filter tank 4 through the outlet pipe I22, and the top of the coarse filter tank 4 is provided with the outlet pipe II28; the end of the outlet pipe II28 extends into the biological slow The upper end of the filter tank 5 and the bottom of the biological slow filter tank 5 are provided with an outlet pipe III32, and the outlet pipe III32 is connected with the clean water tank 6.

in:

The horizontal hydrocyclone desander 1 enters water along the tangential direction, and there are deflectors 8 and screens 9 evenly distributed in it, and is connected with the distribution channel 11 through the connecting pipe I10.

One side of the water distribution channel 11 is provided with a water hole 12, and communicates with the top of the artificial ecological sewage interception system 2 through the water hole 12.

The artificial ecological sewage interception system 2 is turf 13, cultivated soil 14, geotextile Ⅰ 15, gravel 16, seepage pipe 19, geotextile Ⅱ 17, and original soil compaction 18 from the surface to the inside, in which the turf 13 is ice grass with well-developed root system; seepage The end of pipe 19 is connected with the top of water cellar 3 by connecting pipe II20.

The bottom of the coarse filter tank 4 is provided with a vent pipe 26, and a filter material layer I24 and a supporting layer I25 are arranged in it from top to bottom; the filter material layer I24 has a particle diameter of 5-10 mm and a thickness of 300mm, 10~20mm, 300mm thick, 20~30mm, 400mm thick, 30~50mm, 400mm thick four layers of pebbles; the supporting layer I25 is composed of pebbles with a particle size of 50~70mm and a thickness of 300mm Composition; The vent pipe 26 is provided with a valve IV 27.

The bio-slow filter 5 is provided with a filter material layer II30 and a supporting layer II31 from top to bottom; the filter material layer II30 is composed of quartz sand with a particle size of 0.25~0.5 mm and a thickness of 1 m; the supporting layer II31 is from top to bottom The bottom is composed of four layers of pebbles with a particle size of 1~2mm, a thickness of 50mm, 2~4mm, a thickness of 50mm, 4~8mm, a thickness of 100mm, and a particle size of 8~16mm, and a thickness of 100mm.

The outlet pipe I22 is provided with a valve I23. The outlet pipe II28 is provided with a valve II29. The outlet pipe III32 is provided with a valve III33. The end of the outlet pipe I22 is perforated to distribute water to flow upward, and the end of the outlet pipe II28 is perforated to distribute water to flow downward.

Add slow/controlled release disinfectant in the clear water tank 6.

Influent water treatment process of the present utility model is as follows:

The rainwater flows through the horizontal hydrocyclone desander 1 from the rainwater inlet 7, and the large particles of impurities and dense suspended solids in the rainwater are removed, and the outlet water flows to the distribution channel 11 through the connecting pipe I10. The rainwater from the distribution channel 11 enters the artificial ecological sewage interception system 2 through the water hole 12, and the turbidity, total nitrogen, total phosphorus, organic matter, and the total number of bacteria in the rainwater pass through the adsorption of non-rhizosphere soil, rhizosphere soil, and plant rhizosphere. The stems and leaves of wheatgrass intercept, and the microbial nitrification and denitrification adsorbed on the root system are mostly removed, and the seepage rainwater of the artificial ecological sewage interception system 2 flows through the seepage pipe 19 and flows to the water cellar 3 through the connecting pipe II20. The cellar water storage is pumped to the bottom of the coarse filter tank 4 through the water pump 21, the water is distributed upward through the perforation at the end of the outlet pipe I22, the water outlet from the coarse filter tank 4 flows into the upper end of the biological slow filter tank 5, and the water is distributed downward through the perforation at the end of the outlet pipe II28 , the high turbidity in the cellar water is removed by the precipitation of the large particle size filter material in the coarse filter 4, the adsorption and interception of the small particle size filter material in the biological slow filter 5, and the ammonia nitrogen, organic matter, and the total number of bacteria contained in the cellar water Pollutants such as pollutants are removed through the combined action of adsorption, flocculation and biochemical reactions of the biofilm attached to the surface of the filter material in the coarse filter 4 and the biological slow filter 5 . The effluent from the biological slow filter 5 enters the clean water tank 6, and a slow/controlled release disinfectant is added in the tank to further purify the water quality. Clean water tank 6 stores water and meets national drinking water hygiene standards.

Claims (10)

1. the pre-treatment of rain collecting cellar water and advanced treatment integrated form system, is characterized in that: this system comprises that horizontal hydrocyclone desander (1), artificial ecology cut dirty system (2), water cellar (3), coarse filter (4), biological slow filter (5) and filtered water tank (6); One side of described horizontal hydrocyclone desander (1) is provided with collection rain water-in (7), and its opposite side is connected with distributing flue (11), and this distributing flue (11) cuts dirty system (2) with described artificial ecology and communicates; Described artificial ecology is cut dirty system and is connected with described water cellar (3), is provided with water pump (21) in this water cellar (3); Described water pump (21) communicates with described coarse filter (4) bottom by rising pipe I (22), and the top of this coarse filter (4) is provided with rising pipe II (28); The end of described rising pipe II (28) stretches into upper end, described biological slow filter (5); The bottom of described biological slow filter (5) is provided with rising pipe III (32), and this rising pipe III (32) is connected with described filtered water tank (6).

2. rain collecting cellar water as claimed in claim 1 pre-treatment and advanced treatment integrated form system, it is characterized in that: in described horizontal hydrocyclone desander (1), be evenly equipped with flow deflector (8) and screen cloth (9), and be connected with described distributing flue (11) by pipe connecting I (10).

3. rain collecting cellar water as claimed in claim 1 pre-treatment and advanced treatment integrated form system, it is characterized in that: a side of described distributing flue (11) is provided with water hole (12), and communicate by the top that this water hole (12) and described artificial ecology are cut dirty system (2).

4. rain collecting cellar water as claimed in claim 1 pre-treatment and advanced treatment integrated form system, is characterized in that: described artificial ecology is cut dirty system (2) and is from outward appearance to inner essence followed successively by turf (13), compost (14), geotextile I (15), gravel (16), seepage flow pipe (19), geotextile II (17), original soil rammed (18); The end of described seepage flow pipe (19) is connected with the top of described water cellar (3) by pipe connecting II (20).

5. rain collecting cellar water as claimed in claim 1 pre-treatment and advanced treatment integrated form system, is characterized in that: described rising pipe I (22) is provided with valve I (23).

6. rain collecting cellar water as claimed in claim 1 pre-treatment and advanced treatment integrated form system, is characterized in that: the bottom of described coarse filter (4) is provided with blow-down pipe (26), is provided with filter material layer I (24), supporting layer I (25) in it from top to bottom; Described filter material layer I (24) is that 5 ~ 10 mm, thickness are 300mm by particle diameter from top to bottom, and 10 ~ 20 mm, thickness are 300mm, and 20 ~ 30 mm, thickness are 400mm, and four layers of pebbles that 30 ~ 50mm, thickness are 400mm form; Described supporting layer I (25) is that the pebbles that 50 ~ 70mm, thickness are 300mm forms by particle diameter; Described blow-down pipe (26) is provided with valve IV (27).

7. rain collecting cellar water as claimed in claim 1 pre-treatment and advanced treatment integrated form system, is characterized in that: described rising pipe II (28) is provided with valve II (29).

8. rain collecting cellar water as claimed in claim 1 pre-treatment and advanced treatment integrated form system, is characterized in that: in described biological slow filter (5), be provided with filter material layer II (30), supporting layer II (31) from top to bottom; Described filter material layer II (30) is that the quartz sand that 0.25 ~ 0.5mm, thickness are 1m forms by particle diameter; Described supporting layer II (31) is that 1 ~ 2 mm, thickness are 50mm by particle diameter from top to bottom, and 2 ~ 4 mm, thickness are 50mm, and 4 ~ 8 mm, thickness are 100mm, and four layers of pebbles that 8 ~ 16mm, thickness are 100mm form.

9. rain collecting cellar water as claimed in claim 1 pre-treatment and advanced treatment integrated form system, is characterized in that: described rising pipe III (32) is provided with valve III (33).

10. rain collecting cellar water as claimed in claim 1 pre-treatment and advanced treatment integrated form system, is characterized in that: described filtered water tank adds slow/controlled release sterilizing agent in (6).