CN206173180U - Dispose of sewage device of factory's tail water - Google Patents

Abstract

The utility model discloses a dispose of sewage device of factory's tail water. Including filter material, supporting layer, inlet tube, play mill weir, lead the abrasive cone, carry the sand air cock, carry the sandpipe, washed -out sand ware, the export of washed -out sand water, air lift pump and electric control system. Tail water is got into by the inlet tube, and through the even water distribution of water -locator, through filtering material, the suspended solid in the tail water is held back by the filter material and is got rid of, the direct filtration dephosphorization of flocculating a little, and under the denitrification biological agent attached to on the filter material, the nitrate nitrogen is accomplished the denitrogenation reaction and is generated nitrogen gas, and the organic matter is utilized as the nutrients of microorganism, and partial organic matter can be got rid of along with the suspended solid simultaneously, and the water after the processing is discharged by the play mill weir of filtering pond lower extreme. The filter material of holding back the pollutant simultaneously carries out continuous back flush through carrying sandpipe air stripping to washed -out sand ware. The utility model discloses can effectively get rid of tail water pollutant, go out water and reach " surface water environment quality standard " (GB3838 2002 )In IV types of water standard.

Description

A kind of device for processing sewage plant tail water

Technical field

This utility model is related to a kind of device of process sewage plant tail water.

Background technology

With the development and the sharp increase of urban population of social economy, the mankind are continuously increased to the demand of water.The mankind use The not science and the severe contamination of water body of water, makes originally poor Available water resources fall sharply increasingly.Town B-grade sewage process Factory is still below the class water of earth's surface V by the effluent quality that one-level A marks discharge, and water outlet after sewage treatment plant's biochemical treatment is directly discharged to Rivers,lakes and seas, rivers,lakes and seas environmental carrying capacity is limited, and prolonged discharge will cause water body contaminated beyond its environmental carrying capacity, make water Shortage of resources is further exacerbated by, and forms vicious cycle.What State Council held《National urban water supply and water saving and water prevention and cure of pollution work Make》Propose：Advocate the exploitation of the Discussion about Unconventional Water Resources such as urban sewage recycling energetically, and include water resource unified management and Allotment.Municipal sewage, sanitary sewage and industrial wastewater pollution are a kind of potential water resources, if treated sewage is returned For the field such as industry, municipal administration, agricultural, sewage recycling is greatly developed, for the strategy of sustainable development is carried out, properly located The same population of economic development, resource, the relation of environment are managed, tool is of great significance.

At present, with municipal sewage plant's two stage treatment tail water as water source carry out advanced treatment and reclamation when, typically using thing Change+sterilization process is processed, and filtering ponds are to process key link, this kind of handling process small investment, operates easy to maintenance, operation Expense is low, and in terms of municipal sewage plant's biochemical tail water process certain effect is achieved.But the filtering ponds in running Step backwash need to be carried out, and nowadays dirty Organic substance in water and nitrogen and phosphorus content are higher, emission request is relative to be improved, traditional Filtering ponds cannot meet actual demand.

The content of the invention

The purpose of this utility model provides a kind of device for processing sewage plant tail water.

This utility model is individual being achieved in that：Process sewage plant tail water device include filtrate, supporting layer, water inlet pipe, Effluent weir, lead abrasive cone, put forward sand valve, sand extraction tube, sand-washing device, washed-out sand water out, air lift and electric control system；Filter tank Bottom is supporting layer, and supporting layer is made up of cobble, and supporting layer top is filtrate, and filtrate is by the quartz sand structure that particle diameter is 2 ~ 3mm Into, and can be used as denitrification bio-film colonization medium；Water inlet pipe is located at filter tank top, and sand extraction tube stands on filter tank middle part, under sand extraction tube Hold to carry sand valve, lead abrasive cone positioned at sand valve top is carried, carry sand valve and connect air lift, another termination electricity of air lift Gas control system, sand extraction tube upper end outside is sand-washing device, and washed-out sand water out is located at filter tank upper end side, and effluent weir is located under filter tank End.

Using said apparatus process sewage plant tail water the step of be:

（1）After sewage plant tail water is mixed in mixing pit, entered by water inlet pipe, Jing water-locator uniform water distributions, Jing is filtered Material, the float in tail water is removed by filtrate retention, microflocculation-filtration dephosphorization, biological in the denitrification being attached on filtrate Under effect, nitrate nitrogen completes denitrification reaction and generates nitrogen, and Organic substance is utilized as the nutrient substance of microorganism, while part has Machine thing can be discharged with suspended substance removal, the water after process by the effluent weir of filter tank lower end.

（2）Lead abrasive cone and the filtrate for having retained pollutant be oriented to into bottom, air is compressed to and carries sand valve by air lift, Filtrate is cleaned by sand extraction tube air stripping to sand-washing device, and cleaned filtrate is returned directly to filter tank and is used by sand-washing device, washes Sand waste water is flowed out by washed-out sand water out, after the completion of part filtrate air stripping is cleaned to sand-washing device again, thus circulate, complete filter The continuous backwash of material.Electric control system is used to control startup, operation and the report of denitrification deep-bed filter and air lift It is alert.

This utility model can realize the continuous way backwash in filter tank, and filtrate is combined with microbial, effectively remove tail Float, Organic substance and nitrogen phosphorus substance in water, makes Sewage Plant biochemical tail water reach reuse standard.

Description of the drawings

Fig. 1 is device overall structure cross-sectional schematic of the present utility model.

Labelling in figure：1- filtrates, 2- supporting layers, 3- water inlet pipes, 4- effluent weirs, 5- leads abrasive cone, and 6- carries sand valve, and 7- carries sand Pipe, 8- sand-washing devices, 9- washed-out sand water outs, 10- air lifts, 11- electric control systems.

Specific embodiment

Embodiment：

Such as Fig. 1, process the device of sewage plant tail water, including filtrate 1, supporting layer 2, water inlet pipe 3, effluent weir 4, lead abrasive cone 5, Put forward sand valve 6, sand extraction tube 7, sand-washing device 8, washed-out sand water out 9, air lift 10 and electric control system 11；Filter tank bottom is Supporting layer 2, supporting layer 2 is made up of cobble, and the top of supporting layer 2 is filtrate 1, and filtrate 1 is by the quartz sand structure that particle diameter is 2 ~ 3mm Into, and can be used as denitrification bio-film colonization medium；Water inlet pipe 3 is located at filter tank top, and sand extraction tube 7 stands on filter tank middle part, sand extraction tube 7 Abrasive cone 5 is led positioned at the top of sand valve 6 is carried in lower end to carry sand valve 6, carries sand valve 6 and connects air lift 10, air lift 10 Another termination electric control system 11, the upper end of sand extraction tube 7 outside is sand-washing device 8, and washed-out sand water out 9 is located at filter tank upper end side, Effluent weir 4 is located at filter tank lower end.

Using said apparatus process sewage plant tail water the step of be:

（1）After sewage plant tail water adds carbon source and coagulant to mix in mixing pit, entered by water inlet pipe 3, Jing water distributions Device uniform water distribution, through filtrate 1, the float in tail water retains removal by filtrate 1, and microflocculation-filtration dephosphorization is progressively carried To design discharge, denitrifying microorganism apposition growth on filtrate 1 forms biomembrane to high flow of inlet water, and it is anti-that nitrate nitrogen completes denitrogenation Nitrogen should be generated, Organic substance is utilized as the nutrient substance of denitrifying microorganism, while partial organic substances can go with float Remove, the water after process is discharged by the effluent weir of filter tank lower end.

（2）After operation a period of time, when monitoring that effluent quality declines, backwash is carried out to filtrate;Leading abrasive cone 5 will retain The filtrate 1 of pollutant is oriented to bottom, and air is compressed to and carries sand valve 6 by air lift 10, and filtrate 1 is by the air stripping of sand extraction tube 7 Cleaned to sand-washing device 8, cleaned filtrate 1 is returned directly to filter tank and is used by sand-washing device 8, and washed-out sand waste water is by washed-out sand water Outlet 9 is flowed out, after the completion of the air stripping of part filtrate 1 is cleaned to sand-washing device 8 again, thus circulate, complete the continuous anti-of filtrate 1 Rinse;Electric control system 11 controls startup, operation and the warning of denitrification deep-bed filter and air lift 10.

Float, Organic substance, total nitrogen, total phosphorus in sewage plant tail water is further removed and reaches reuse index, and water outlet reaches 《Water environment quality standard》（GB3838-2002）In IV class water quality standard.

Claims (1)

1. a kind of device for processing sewage plant tail water, is characterized in that being that continuous way backwash denitrification deep-bed filter device includes Filtrate（1）, supporting layer（2）, water inlet pipe（3）, effluent weir（4）, lead abrasive cone（5）, carry sand valve（6）, sand extraction tube（7）, sand-washing device （8）, washed-out sand water out（9）, air lift（10）And electric control system（11）；Filter tank bottom is supporting layer（2）, supporting layer （2）It is made up of cobble, supporting layer（2）Top is filtrate（1）, filtrate（1）It is made up of quartz sand of the particle diameter for 2 ~ 3mm, and energy As denitrification bio-film colonization medium；Water inlet pipe（3）It is located at filter tank top, sand extraction tube（7）Stand on filter tank middle part, sand extraction tube（7） Lower end is to carry sand valve（6）, lead abrasive cone（5）Positioned at carrying sand valve（6）Top, carries sand valve（6）Connect air lift（10）, it is empty Gas elevator pump（10）Another termination electric control system（11）, sand extraction tube（7）Upper end outside is sand-washing device（8）, washed-out sand water out （9）Positioned at filter tank upper end side, effluent weir（4）Positioned at filter tank lower end.