A kind of anaerobism waste disposal plant
Technical field
The utility model relates to sewage treatment area, refers in particular to a kind of waste disposal plant.
Background technology
Anaerobic treatment process is mainly applicable to the treatment of Organic Wastewater of middle and high concentration.It utilizes anaerobic bacterium that the organic substance decomposing in waste water is accounted for to 25% for methane (accounting for 75%), CO2() and a small amount of mud.Because whole treating processes does not need oxygen supply, therefore energy consumption is very low, also can reduce a lot of operational maintenance problems (oxygen system needs very complicated maintenance conventionally) simultaneously, therefore in treatment of Organic Wastewater, has obtained widely and has used.Anaerobic technique has the following advantages: 1, surplus sludge volume is few; 2, low nutritional needs; 3, produce available methane gas; 4, running cost is lower.But the system for anaerobic treatment of conventional design has a distinct disadvantage, after being subject to heavy-duty service, anaerobic effluent usually all enters Aerobic Pond with a large amount of active anaerobic sludges, and to Aerobic Pond, processing has increased burden, has affected the effect of aerobic treatment.
Summary of the invention
The technical problems to be solved in the utility model, is to provide a kind of waste disposal plant, solve existing waste disposal plant in the time of anaerobic effluent usually all with a large amount of active anaerobic sludges.
The utility model is achieved in that
A kind of waste disposal plant, comprise anaerobic reaction-pot, also comprise internal recycle tank, described internal recycle tank is outside and be communicated with by rising pipe with anaerobic reaction-pot at described anaerobic reaction-pot, water collector is installed on internal recycle tank top, internal recycle tank has outputted aerobic water mouth on the wall above water collector, internal recycle pot bottom is provided with impeller pump, described anaerobic reaction-pot has anaerobism feed-water end, anaerobism feed-water end is connected with line mixer, line mixer respectively with impeller pump, former water upstream end connects, internal recycle tank top is provided with drain tap, internal recycle pot bottom has emptying valve.
The utility model has the advantage of: internal recycle tank of the present utility model can by not completely the sewage of anaerobic treatment and sludge circulation to secondary treatment again in anaerobic system, avoid aerobic treatment system loading to increase, Sewage treatment systems can normally be moved.
Brief description of the drawings
The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.
Fig. 1 is structural representation of the present utility model.
Embodiment
Refer to shown in Fig. 1, a kind of waste disposal plant, comprise anaerobic reaction-pot 1, also comprise internal recycle tank 2, internal recycle tank 2 is outside and be communicated with by rising pipe 3 with anaerobic reaction-pot 1 at anaerobic reaction-pot 1, water collector 4 is installed on internal recycle tank 2 tops, internal recycle tank 2 has outputted aerobic water mouth 5 on the wall above water collector 4, internal recycle tank 2 bottoms are provided with impeller pump 6, anaerobic reaction-pot 1 has anaerobism feed-water end 7, anaerobism feed-water end 7 is connected with line mixer 8, line mixer 8 respectively with impeller pump 6, former water upstream end 9 connects, internal recycle tank 2 tops are provided with drain tap 10, internal recycle tank 2 bottoms have emptying valve 11.
When concrete enforcement, preferably at anaerobic reaction-pot 1 top, anaerobism drain tap 12 is installed, is convenient to anaerobic reaction-pot 1 pressure equilibrium.In use, the anaerobism muddy water in anaerobic reaction-pot 1 flows to internal recycle tank 2 by rising pipe 3 to the utility model, and anaerobism muddy water supernatant liquor after internal recycle tank 2 precipitations is collected by outputted aerobic water mouth 5 and flow to aerobic treatment system by water collector 4.Mud after precipitation is mixed in anaerobic reaction-pot 1 through line mixer 8 and the former water of former water upstream end 9 by impeller pump 6, mud both can second stage employ, can not increase load to aerobic system again, impeller pump 6 can strengthen anaerobism water inlet flow velocity, anaerobic system bottom mud is rushed and makes mud and sewage contact reacts time lengthen to anaerobic reaction-pot 1 middle part, better bring into play anaerobic treatment effect.The drain tap 10 of internal recycle tank 2 can not timing be opened Valved discharge internal recycle tank 2 interior air can prevent that gas from blocking up phenomenon, makes impeller pump 6 can not produce idle running and damages impeller pump 6.Regularly open emptying valve 11 and unnecessary anaerobic sludge can be drained into anaerobic reaction-pot 1 and internal recycle tank 2 outsides, keep the normal ratio of anaerobic reaction-pot 1 and internal recycle tank 2 anaerobic sludges.Avoid anaerobic sludge to enter into aerobic treatment system, avoid aerobic treatment system loading to increase, Sewage treatment systems can normally be moved.
The above embodiment, it is preferred embodiments of the present utility model, be not to limit the utility model practical range, the equivalence of doing according to structure, feature and principle described in the utility model claim therefore all changes or modifies, and all should comprise in the utility model patent claim.