A kind of lower water drainage
Technical field
The utility model relates to technical field of sewage, is specifically related to a kind of lower water drainage.
Background technology
Sanitary sewage is mixed laggard row relax by general domestic sewage processing system unification, the problem brought like this is the effect that the grease in kitchen waste water can affect follow-up oxidative biological treatment step, and the ight soil that can produce biogas in toilet sewage is not also fully utilized.
Utility model content
The purpose of this utility model is to solve the problem, and provides a kind of classification pre-treatment kitchen waste water and toilet sewage, improves the drainage of processing efficiency and salvage value.
The technical scheme that the utility model solves the problem is as follows:
A kind of lower water drainage, comprise pre-filtration system, be connected to pre-filtration system after equalizing tank, be connected to equalizing tank after contact-oxidation pool, be connected to contact-oxidation pool after settling tank and sludge treating system after being connected to settling tank and sterilization pool, the supernatant liquor of settling tank enters into sterilization pool, and the mud of precipitation enters into sludge treating system; Water filtering system for kitchen use and use in toilet water filtering system is also comprised before pre-filtration system.
The grease processing and can remove in advance in kitchen waste water of classifying is carried out to kitchen waste water and toilet sewage, prevents it from hindering follow-up sewage treatment step, it can be utilized to produce biogas to the pre-treatment of toilet sewage.
Sterilization pool can pump into and adopt sterilizing agent to eliminate remaining bacterium.
Preferred as technique scheme, described water filtering system for kitchen use comprises a sediment oil strain pond.
Preferred as technique scheme, the marsh gas fermentation pool that described use in toilet water filtering system comprises septic tank and is connected with septic tank.
Preferred as technique scheme, described sludge treating system comprises sludge digestion tank and sludge dewatering system after being connected to, and the supernatant liquor of sludge digestion tank is back in equalizing tank.Mud is after digestion, and part organonitrogen has wherein changed into ammonia nitrogen, improves the fertilizer efficiency of mud, then can be used for fertilising after dehydration.
Preferred as technique scheme, the fine fack after described pre-filtration system comprises coarse rack and is arranged on coarse rack.
Preferred as technique scheme, the width between the grid of described coarse rack is 30-50mm.
Preferred as technique scheme, the width between the grid of described fine fack is 5-20mm.
In sum, the utility model has following beneficial effect:
1. under one described in the utility model, water drainage classification process kitchen oily(waste)water and toilet, containing fecal sewage, improve processing efficiency;
2. a kind of lower water drainage described in the utility model also makes full use of resource and generates the dewatered sludge that can supply the biogas of burning and can supply fertilising.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram of lower water drainage;
Fig. 2 is a kind of schematic flow sheet of lower water drainage;
In figure, 1-pre-filtration system, 11-coarse rack, 12-fine fack, 2-equalizing tank, 3-contact-oxidation pool, 4-settling tank, 5-sludge treating system, 51-sludge digestion tank, 52-sludge dewatering system, 6-sterilization pool, 7-water filtering system for kitchen use, 8-use in toilet water filtering system, 81-septic tank, 82-marsh gas fermentation pool.
Embodiment
Be clearly and completely described to the technical scheme in the utility model embodiment below, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Embodiment in the utility model, those of ordinary skill in the art are not doing other embodiments all obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model is described in detail with embodiment below in conjunction with accompanying drawing.
Embodiment 1: a kind of lower water drainage, comprise pre-filtration system 1, be connected to equalizing tank 2 after pre-filtration system 1, be connected to equalizing tank after contact-oxidation pool 3, be connected to the settling tank 4 after contact-oxidation pool 3 and the sludge treating system 5 be connected to after settling tank 4 and sterilization pool 6, the supernatant liquor of settling tank 4 enters into sterilization pool 6, and the mud of precipitation enters into sludge treating system 5; Water filtering system 7 for kitchen use and use in toilet water filtering system 8 is also comprised before pre-filtration system 1.
The fine fack 12 that described pre-filtration system 1 comprises coarse rack 11 and is arranged on after coarse rack 11, the width between the grid of described coarse rack 11 is 30mm, and the width between the grid of described fine fack 12 is 5mm.
Sludge dewatering system 52 after described sludge treating system 5 comprises sludge digestion tank 51 and is connected to, the supernatant liquor of sludge digestion tank 51 is back in equalizing tank 2.
Described water filtering system for kitchen use 7 comprises a sediment oil strain pond; The marsh gas fermentation pool 82 that described use in toilet water filtering system 8 comprises septic tank 81 and is connected with septic tank 81.
Embodiment 2: a kind of lower water drainage, comprise pre-filtration system 1, be connected to equalizing tank 2 after pre-filtration system 1, be connected to equalizing tank after contact-oxidation pool 3, be connected to the settling tank 4 after contact-oxidation pool 3 and the sludge treating system 5 be connected to after settling tank 4 and sterilization pool 6, the supernatant liquor of settling tank 4 enters into sterilization pool 6, and the mud of precipitation enters into sludge treating system 5; Water filtering system 7 for kitchen use and use in toilet water filtering system 8 is also comprised before pre-filtration system 1.
The fine fack 12 that described pre-filtration system 1 comprises coarse rack 11 and is arranged on after coarse rack 11, the width between the grid of described coarse rack 11 is 50mm, and the width between the grid of described fine fack 12 is 20mm.
Sludge dewatering system 52 after described sludge treating system 5 comprises sludge digestion tank 51 and is connected to, the supernatant liquor of sludge digestion tank 51 is back in equalizing tank 2.
Described water filtering system for kitchen use 7 comprises a sediment oil strain pond; The marsh gas fermentation pool 82 that described use in toilet water filtering system 8 comprises septic tank 81 and is connected with septic tank 81.