CN202542947U

CN202542947U - Device integrating organic waste water anaerobic digestion and methane enrichment and compression

Info

Publication number: CN202542947U
Application number: CN2012201824842U
Authority: CN
Inventors: 聂艳秋; 李玉秀
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-26
Filing date: 2012-04-26
Publication date: 2012-11-21
Anticipated expiration: 2022-04-26

Abstract

The utility model provides a device integrating organic waste water anaerobic digestion and methane enrichment and compression. The device is characterized by comprising a pressure-proof anaerobic digestion tank; the upper end port of the pressure-proof anaerobic digestion tank is sealed by a cover plate and a sealing ring; a waste water inlet pipe, a gas inlet pipe, a biogas outlet pipe and a gas pressure gauge inlet pipe are respectively inserted into the tank; high and low water level electrodes arranged at the side of the tank body are connected with a water inlet automatic adjusting valve in the waste water inlet pipe through a water level adjusting controller; and a water outlet and a mud discharge port are respectively arranged at the lateral side and bottom side of the tank body. When the device is used, the tamed anaerobic active sludge and organic waste water required to be processed in an anaerobic digestion way are firstly placed in the digestion tank, the waste water and sludge in the tank is aerated for 0.1-10 hours by non-oxygen gas, then the operation of anaerobic digestion is started, the biogas purifying and compressing processes are finished by biogas-accumulated automatically produced pressure which is produced by the anaerobic digestion, thus, the biogas with high thermal value can be produced in a single anaerobic digestion tank at one step; the investment is less, the operation cost is low, the management is simple, and the device can be widely used in middle-size and small-size biogas projects.

Description

The integrated apparatus of a kind of organic waste water anaerobic digestion and methane-rich, compression

Technical field

The utility model relates to a kind of treatment facility of organic waste water, the integrated apparatus of particularly a kind of organic waste water anaerobic digestion and methane-rich, compression.

Background technology

At present, mainly be that employing is the biogas engineering of core technology with the anaerobic digestion for processing like organic waste waters such as plant's waste water, sewage plant excess sludge and food processing wastewater, malting effluent, wastewater from sugar plant.In the biogas of wherein producing based on the middle-size and small-size biogas engineering of normal pressure anaerobic digestion, methane content generally has only about 60%, and calorific value is low; Therefore gained biogas need purify before use mostly, with enrich methane, reduces foreign matter content; In addition, for ease of the storage and the transportation of biogas, also need compress purified marsh gas; And build marsh gas purifying facility, big, the complex management of installation biogas gas booster compressor investment, generally only in the large-sized biogas engineering, adopt.And in the large-sized biogas engineering, generally be again to adopt biogas production and marsh gas purifying two step method to carry out, used device is many, and running cost is high.

Summary of the invention

The purpose of the utility model is in order to overcome above-mentioned weak point, and a kind of less investment is provided, and running cost is low, and management is simple, and a step is produced organic waste water anaerobic digestion and the methane-rich of high heating value biogas, the integrated apparatus of compression.

The purpose of the utility model is achieved in that the integrated apparatus of a kind of organic waste water anaerobic digestion and methane-rich, compression; It is characterized in that it comprises the withstand voltage anaerobic digestor of port by cover plate, sealing-ring sealing; Pass cover plate and in jar, insert wastewater inlet pipe, inlet pipe, biogas escape pipe, gas-pressure meter inlet pipe respectively; Be connected in series water intaking valve, water inlet automatic regulating valve in the wastewater inlet pipe outside jar successively; Being installed in the lateral high and low level electrode of tank body is connected with the water inlet automatic regulating valve through the water level management device; Be connected in series intake valve in jar outer inlet pipe, be connected in series air outlet valve successively in jar outer biogas escape pipe, the SV of giving vent to anger, tank body side, bottom surface are installed water outlet, the mud discharging mouth that has valve respectively.

The utility model is owing to adopt above design; During use; In digester, pack into earlier to have trained and tame and docile good cotton-shaped or granular anaerobic activated sludge, and introducings need the organic waste water of Anaerobic Digestion, the volume ratio of jar interior anaerobic activated sludge and organic waste water is 1:1～100; Turn on the air outlet valve in the biogas escape pipe, the intake valve in the inlet pipe respectively; Adopt one or more mixed gass in the non-oxygen gas such as nitrogen, argon gas, methane by inlet pipe to waste water in the digester and mud inflation 0.1～10 hour, drive out dissolved oxygen and the air in the jar inner top space in jar interior waste water and the mud, can begin the operation of anaerobic digestion.Organic waste water is in anaerobic digestion process, and along with progressively gathering of the biogas that digests generation, the digester internal pressure is with corresponding rising; And along with the rising of pressure, the biogas that is discharged into gas phase from liquid phase reduces, and dissolving the biogas that stays liquid phase increases; Because the solvability of various compositions differs greatly in the biogas, methane indissoluble, gases such as carbonic acid gas are prone to dissolve; Therefore in the withstand voltage digester of good seal performance, along with the rising of pressure, the methane content in the biogas can increase substantially; Utilize anaerobic digestion to produce autogenous pressure completion marsh gas purifying and compression process that biogas gathers, a step is produced high heating value biogas, less investment in single anaerobic digestor; Running cost is low, and management is simple, and suit is used in middle-size and small-size biogas engineering.

Description of drawings

Fig. 1 is the utility model example structure synoptic diagram.

Embodiment

Combine the accompanying drawing illustrated embodiment that the utility model is made detailed description at present.

As shown in the figure, the integrated apparatus of a kind of organic waste water anaerobic digestion and methane-rich, compression comprises the withstand voltage anaerobic digestor 3 of port by cover plate 1, sealing-ring 2 sealings; Wherein digester 3 is processed by anticorrosion alloy; 2～30 millimeters of wall thickness, aspect ratio are 1～20:1, and port has joint flange 4; Be equipped with sealing-ring 2, cover plate 1 above the joint flange 4 successively, pass joint flange 4, sealing-ring 2, cover plate 1 by screw rod 5 the jar port is sealed.Pass cover plate 1 and in jar, insert wastewater inlet pipe 6, inlet pipe 7, biogas escape pipe 8, gas-pressure meter 9 inlet pipe respectively; Wherein wastewater inlet pipe 6 lower ends apart from jar at the bottom of 0.1～1 meter hydraucone 10 is arranged; Inlet pipe 7 lower ends apart from jar at the bottom of 0.05～0.5 meter, be connected with the even gas distribution device 11 that radially-arranged arm is formed, biogas escape pipe 8, gas-pressure meter 9 inlet pipe lower port are positioned at jar more than the top water-level water surface.Wastewater inlet pipe 6 outside jar is connected in series water intaking valve 12, water inlet automatic regulating valve 13 successively; Being installed in the lateral high and

low level electrode

14,15 of tank body is connected with water inlet automatic regulating valve 13 through water level management device 16; Serial connection intake valve 17 in the inlet pipe 7 outside jar; Be connected in series air outlet valve 18 successively in jar outer biogas escape pipe 8, the SV 19 of giving vent to anger, tank body side, bottom surface are installed water outlet 22, the mud discharging mouth 23 that has

valve

20,21 respectively.

Claims

1. the integrated apparatus of organic waste water anaerobic digestion and methane-rich, compression; It is characterized in that it comprises the withstand voltage anaerobic digestor (3) of port by cover plate (1), sealing-ring (2) sealing; Pass cover plate (1) and in jar, insert wastewater inlet pipe (6), inlet pipe (7), biogas escape pipe (8), gas-pressure meter (9) inlet pipe respectively; Be connected in series water intaking valve (12), water inlet automatic regulating valve (13) in the wastewater inlet pipe (6) outside jar successively; Being installed in the lateral high water level electrode of tank body (14), low water level electrode (15) is connected with water inlet automatic regulating valve (13) through water level management device (16); Serial connection intake valve (17) in the inlet pipe (7) outside jar; Be connected in series air outlet valve (18), the SV of giving vent to anger (19) successively in the biogas escape pipe (8) outside jar, tank body side, bottom surface are installed water outlet (22), the mud discharging mouth (23) that has valve (20), valve (21) respectively.