CN205368085U - Sludge anaerobic digestion degritting agitating unit - Google Patents

Abstract

The utility model provides a sludge anaerobic digestion degritting agitating unit, its characterized in that has a anaerobic reactor jar body, anaerobic reactor jar body bottom is for invering round platform shape concrete body, along the generating line direction of invering round platform shape concrete body, be equipped with a sand discharge pipe, outside at the anaerobic reactor jar body, sand discharge pipe connects a sediment outflow pump, a discharging pipe is connected to the sediment outflow pump, connect the tee bend on the discharging pipe, back flow and sand pipe are connected respectively in the tee bend, an outlet pipe is connected to the back flow, 1 meter below the anaerobic reactor jar body fluid face is located to the outlet pipe, it is parallel with anaerobic reactor jar body fluid face. The utility model discloses simple structure has set up sand removing device, has guaranteed the steady operation of sludge anaerobic digestion system, has still had backward flow stirring function concurrently simultaneously, has improved the operating efficiency of sludge anaerobic digestion system, has saved investment and working costs. But the wide application of this degritting agitating unit has spreading value in the sludge anaerobic digestion field of handling.

Description

A kind of anaerobic sludge digestion desanding agitating device

Technical field

This utility model relates to sludge anaerobic process field, particularly relates to a kind of anaerobic sludge digestion desanding agitating device.

Background technology

Mud is that municipal sewage plant processes a kind of solid pollutant of generation during sewage, is made up of Organic substance, inorganic salts, microorganism and parasitic ovum etc..Overwhelming majority municipal sewage plant all adopts Wastewater Treated by Activated Sludge Process sewage, due to the needs that Microbial Communities in Activated Sludge updates, is inevitably generated unnecessary mud, is referred to as excess sludge in sewage disposal process.

Owing to mud containing various pollutant, if not carrying out harmless treatment, disposal, directly render in environment, will to environment.A large amount of along with various places sewage treatment plant build and run, and mud generation amount is greatly increased, and the process of mud and disposal have caused the concern of more and more people.

According to investigation, the main disposal options of mud has: sanitary landfills, Land_use change, anaerobic digestion, mud are directly burned, firing building material and deep dehydration.Anaerobic digestion is as a kind of Treatment of Sludge mode, refer to that mud is under anaerobic, by amphimicrobe and anaerobic bacteria, the biodegradable Organic substance in mud is resolved into carbon dioxide, methane and water etc., make mud obtain stable process, be one of the conventional means of sludge reduction, stabilisation.

In China's municipal sludge, on the low side to correspond to inorganic constituents higher for organic composition, reflects that sewage treatment plant inflow sand content is higher from the side.Trace it to its cause and mainly have: rain dirt separate system imperfection, impaired, the anthropic factor of sewage conduct etc..The way solving anaerobic digestion reaction vessel sand setting has two aspects: increasing stirring power and the prolongation mixing time that is, it is to avoid sand settles and so as to discharge outside pond with mud, but can cause the raising of operating cost and the quickening of equipment attrition；Two is periodic cleaning digester, it is possible to cause that anaerobic digestion reaction vessel cannot run and be likely to need to empty anaerobic digestion reaction vessel continuously.

Summary of the invention

The purpose of this utility model is to provide that a kind of desanding efficiency is high, anaerobic sludge digestion desanding agitating device with agitating function.

A kind of anaerobic sludge digestion desanding agitating device, it is characterized in that there is an anaerobic reactor tank body, anaerobic reactor tank base is inverted round table shape concrete bodies, the bus of inverted round table shape concrete bodies and horizontal plane angle are 20 °, generatrix direction along inverted round table shape concrete bodies, it is provided with a sediment outflow pipe, outside at anaerobic reactor tank body, sediment outflow pipe connects a sand-draining pump, sand-draining pump connects a discharge nozzle, connecting tee on discharge nozzle, threeway connects back to flow tube respectively and goes out sandpipe, return duct connects an outlet pipe, 1 meter of of below anaerobic reactor tank body liquid level is located at by outlet pipe, parallel with anaerobic reactor tank body liquid level, outlet pipe is connected the straight line that the center of circle in same level direction is formed with the intersection point of anaerobic reactor tank body, it it is 60 ° with the angle of outlet pipe horizontal direction.

This utility model simple in construction, is provided with desanding device, it is ensured that the stable operation of sludge anaerobic digestion system, simultaneously also with return stirring function, improves the operational efficiency of sludge anaerobic digestion system, saves investment and operating cost.This desanding agitating device can be widely applied to anaerobic sludge digestion process field, has promotional value.

Accompanying drawing explanation

Fig. 1 this utility model structural representation；

Fig. 2 outlet pipe horizontal direction angle schematic diagram；

In figure: 1 anaerobic reactor tank body, 2 inverted round table shape concrete bodies, 3 sediment outflow pipes, 4 sand-draining pumps, 5 discharge nozzles, 6 threeways, 7 return ducts, 8 go out sandpipe, 9 outlet pipes, 10 anaerobic reactor tank body liquid levels.

Detailed description of the invention

Fig. 1 is this utility model structural representation, it is characterized in that this utility model has an anaerobic reactor tank body 1, it it is inverted round table shape concrete bodies 2 bottom anaerobic reactor tank body 1, the bus of inverted round table shape concrete bodies 2 and horizontal plane angle are 20 °, generatrix direction along inverted round table shape concrete bodies 2, it is provided with a sediment outflow pipe 3, outside at anaerobic reactor tank body 1, sediment outflow pipe 3 connects a sand-draining pump 4, sand-draining pump 4 connects a discharge nozzle 5, connecting tee 6 on discharge nozzle 5, threeway 6 connects back to flow tube 7 respectively and goes out sandpipe 8, return duct 7 connects an outlet pipe 9, less than 10 1 meters of of anaerobic reactor tank body liquid level are located at by outlet pipe 9, parallel with anaerobic reactor tank body liquid level 10.

Fig. 2 is outlet pipe horizontal direction angle schematic diagram, and outlet pipe 9 is connected the straight line that the center of circle in same level direction is formed with the intersection point of anaerobic reactor tank body 1, is 60 ° with the angle of outlet pipe 9 horizontal direction.

Claims (1)

1. null1. an anaerobic sludge digestion desanding agitating device，It is characterized in that: have an anaerobic reactor tank body (1)，Anaerobic reactor tank body (1) bottom is inverted round table shape concrete bodies (2)，The bus of inverted round table shape concrete bodies (2) and horizontal plane angle are 20 °，Generatrix direction along inverted round table shape concrete bodies (2)，It is provided with a sediment outflow pipe (3)，Outside in anaerobic reactor tank body (1)，Sediment outflow pipe (3) connects a sand-draining pump (4)，Sand-draining pump (4) connects a discharge nozzle (5)，The upper connecting tee (6) of discharge nozzle (5)，Threeway (6) connects back to flow tube (7) respectively and goes out sandpipe (8)，Return duct (7) connects an outlet pipe (9)，Anaerobic reactor tank body liquid level (10) 1 meter of is below located at by outlet pipe (9)，Parallel with anaerobic reactor tank body liquid level (10)，Outlet pipe (9) is connected the straight line that the center of circle in same level direction is formed with the intersection point of anaerobic reactor tank body (1)，It it is 60 ° with the angle of outlet pipe (9) horizontal direction.