CN201121151Y

CN201121151Y - Ventilation reinforced drowned flow artificial wet land

Info

Publication number: CN201121151Y
Application number: CNU2007200876497U
Authority: CN
Inventors: 李谷; 吴恢毕
Original assignee: Yangtze River Fisheries Research Institute CAFS
Current assignee: Yangtze River Fisheries Research Institute CAFS
Priority date: 2007-10-23
Filing date: 2007-10-23
Publication date: 2008-09-24
Anticipated expiration: 2017-10-23

Abstract

The utility model relates to a subsurface flow constructed wetland, in particular to a ventilating strengthening subsurface flow constructed wetland, which is composed of a water inlet device, a water outlet device, an infiltration preventing layer and a wetland main body. More than one evacuating piped and hole perforating PVC pipe are arranged on the infiltration preventing layer at the bottom part of the wetland main body, more than one standing pipes are installed on the hole perforating PVC pipe, and a micro-hole aerating pipe is inserted into the hole perforating PVC pipe. Because the method that the aerating pipe is arranged at the bottom part of the wetland main body is adopted by the wetland, under the condition that the oxygen is increased by the batch aerating, the problem the entirety of the constructed wetland is lack of the oxygen can be effectively solved, to ensure that the biological nitrification and biological denitrification taken as the mainly nitrogen removing mechanism can be smoothly performed. And the accumulating water in the wetland can be arbitrarily evacuated by the evacuating pipe, the hole perforating PVC pipe can suck in the air through the negative pressure, not only the pressure can be increased to the wetland main body, but also the blocking can be reduced through the alternation of the dry and the wet, and the service life of the wetland can be increased. The subsurface flow constructed wetland is suitable for processing the domestic sewage and the subsurface flow constructed wetland of the wastewater of the aquiculture.

Description

A kind of drowned flow artificial wet land that ventilates and strengthen

Technical field:

The utility model relates to a kind of drowned flow artificial wet land, particularly a kind of drowned flow artificial wet land that ventilates and strengthen.

Background technology:

Artificial swamp has been applied in the processing of sanitary sewage, aquiculture waste water in recent years, and has played certain effect.Artificial swamp divides two types of surface current artificial swamp and drowned flow artificial wet lands.Drowned flow artificial wet land is generally by wetland main body, impervious barrier, water feed apparatus and discharging device quaternary.The wetland main body is made of the gravel bed of plantation plant, and sewage is purified by physics, chemistry and biological action in flow process.

Drowned flow artificial wet land is in the treating processes to sewage, the existence and the necessary aerobic environment that need oxidation, nitrifying bacteria community, and oxidation in the artificial swamp, the needed oxygen of nitration reaction, except that from the dissolved oxygen in the sewage, mainly being transmitted by the reoxygenation on surface and plantation plant roots provides.Therefore, in operational process, the oxidation of most of wetlands, nitration reaction do not have competent oxygen to support.The practice and studies show that, the minor amounts of oxygen of being permeated with wetland surface reoxygenation and plant root, oxygen for wetland institute's actual needs in operation is inappreciable, traditional artificial swamp is because some differences on people's understanding, there is suitable limitation in actual applications, the purification of water quality ability not only falls flat, even the situation of source of pollution occurs becoming.

Summary of the invention:

The purpose of this utility model is that providing a kind of can effectively increase dissolved oxygen content in the artificial swamp matrix, effectively solves the whole anoxybiotic problem of artificial swamp, thereby improves the drowned flow artificial wet land of the ventilation reinforcement of artificial swamp oxidation and nitrated ability.

The utility model is to realize above-mentioned purpose by the following technical solutions:

A kind of artificial current wetland that ventilates and strengthen, it is made of water feed apparatus, discharging device, impervious barrier and wetland main body, it is characterized in that: be mounted with evacuated tube and perforation pvc pipe more than one on the impervious barrier of described wetland bottom part body, vertical tube more than one is installed on the perforation pvc pipe, and the perforation pvc pipe is built-in with micropore aeration pipe.

Described vertical tube termination is equipped with elbow.

Described perforation pvc pipe is well word shape and connects connection.

Described evacuated tube one end extends to wetland main body outside, and its termination is equipped with movable drain plug.

With periosteum, micropore aeration pipe is connected with air pump by the conduit that passes from vertical tube on the micropore of described micropore aeration pipe.

Described micropore aeration pipe is made of the flexible pipe of bore 3-5mm.

The utility model beneficial effect compared with prior art is:

Owing to adopt the mode that aeration tube is set in the wetland bottom part body, under the situation of intermittent aeration oxygen replenishing, efficiently solve the whole anoxybiotic problem of artificial swamp, feasible biological nitration, denitrification as the main mechanism of denitrogenating can carry out smoothly.And evacuated tube can be accomplished ponding in any emptying wetland, and the perforation pvc pipe sucks air by negative pressure, not only can the main body oxygenation of dewing ground, and reduce by alternation of wetting and drying and to stop up, increase the work-ing life of wetland.

Description of drawings:

The drowned flow artificial wet land one-piece construction synoptic diagram of Fig. 1 for ventilating and strengthening;

The aeration tube structural representation of the drowned flow artificial wet land that Fig. 2 strengthens for ventilating;

Among the figure: 1, water feed apparatus, 2, the wetland main body, 3 discharging devices, 4, the perforation pvc pipe, 5, elbow, 6, plug, 7, micropore aeration pipe; 8, conduit, 9, vertical tube, 10, impervious barrier, 11, evacuated tube.

Embodiment:

The drowned flow artificial wet land that this ventilation is strengthened is made of water feed apparatus 1 and discharging device 3 and wetland main body 2, is equipped with on the impervious barrier 10 of wetland main body 2 bottoms to be well word shape and to arrange, and connects the perforation pvc pipe 4 that connects, and perforation pvc pipe 4 is built-in with micropore aeration pipe 7.With periosteum, micropore aeration pipe 7 is connected with air pump by conduit 8 on the micropore of micropore aeration pipe 7.On the perforation pvc pipe 4 vertical tube 9 is installed and communicates with the external world, an end of evacuated tube 11 extends to wetland main body 2 outsides, and its termination is equipped with plug 6 (referring to accompanying drawing 1).

During work, gas enters micropore aeration pipe 7 by the air pump output through conduit 8, and the periosteum 10 on the micropore aeration pipe 7 opens under the gas effect with certain air pressure, carries out uniform aeration.When stopping air feed, because of the effect of hydraulic pressure, periosteum is shut micropore, has prevented the obstruction of micropore aeration pipe 7 effectively.

The utility model adopts water inlet continuously, the mode of operation of intermittent aeration oxygen replenishing, sewage enters wetland main body 2 through water feed apparatus 1, filtration, absorption and precipitation by matrix, absorption of plant and the oxidation of microorganism, nitrated, denitrification are removed pollutent, and wherein microorganism plays a major role.Because underflow type artificial wet land sewage flows underground, the sewage oxygen that institute's kind of plant discharges in entering oxygen that wetland main body 2 composed and wetland, oxygen for drowned flow artificial wet land institute's actual needs in operation is inappreciable, and the ventilation intensifying device of in artificial current wetland, laying, can make wetland main body 2 oxygen level present alternately property variation, help to have the microorganism synergy of difference in functionality pollutant removal.

The utility model has not only solved wetland main body 2 long term hypoxia problems, help microbiological oxidation and nitration reaction, and, make more horn of plenty of the different physiology floras of wetland main body 2 microorganisms by the interlaced microenvironment of intermittent aeration reinforcing wetland body interior aerobic-anaerobic-anoxic; And the plug 6 by carrying blank pipe 11 terminations that begin to rehearse is the ponding in the emptying wetland at any time just.Perforated pipe pvc pipe 4 sucks air by negative pressure, not only can the main body oxygenation of dewing ground, and by do, wet alternate reduces and stops up, and gives a recuperation of wetland decubation to prolong the work-ing life of wetland.

Claims

1, a kind of artificial current wetland that ventilates and strengthen, it is made of water feed apparatus (1), discharging device (3), impervious barrier (10) and wetland main body (2), it is characterized in that: be mounted with evacuated tube (11) and perforation pvc pipe (4) more than one on the impervious barrier (10) of described wetland main body (2) bottom, vertical tube (9) more than one is installed on the perforation pvc pipe (4), and perforation pvc pipe (4) is built-in with micropore aeration pipe (7).

2, a kind of artificial current wetland that ventilates and strengthen according to claim 1, it is characterized in that: described vertical tube (9) termination is equipped with elbow (5).

3, a kind of artificial current wetland that ventilates and strengthen according to claim 1, it is characterized in that: described perforation pvc pipe (4) is well word shape and connects connection.

4, a kind of artificial current wetland that ventilates and strengthen according to claim 1, it is characterized in that: described evacuated tube (11) one ends extend to wetland main body (2) outside, and its termination is equipped with movable drain plug (6).

5, a kind of artificial current wetland that ventilates and strengthen according to claim 1, it is characterized in that: with periosteum, micropore aeration pipe (7) is connected with air pump by the conduit (8) that passes from vertical tube (9) on the micropore of described micropore aeration pipe (7).

6, a kind of according to claim 1 or 5 artificial current wetland that ventilates and strengthen, it is characterized in that: described micropore aeration pipe (7) is made of the flexible pipe of bore 3-5mm.