A kind of purification tank for the treatment of dispersion type domestic wastewater
The utility model relates to one way of life sewage disposal device, especially a kind of purification tank for the treatment of dispersion type domestic wastewater.
At present, in most samll cities and towns of China and vast Rural areas, because sewage network fraction of coverage is low, be difficult to accomplish unified collection and treatment, add that sewage treatment facility lacks, sanitary sewage is substantially without process just arbitrarily discharge.These dispersion type domestic wastewaters are unprocessed directly to be entered in the water bodys such as neighbouring pond, river, lake, is the major cause causing samll cities and towns, Rural areas water pollution, also have impact on the healthy of urban residents.The sanitary sewage of Rural areas has that the water yield is little, discharge dispersion, daily variation factor is large, organic concentration is higher, containing features such as a certain amount of nitrogen and phosphorus elements; Simultaneously, because the economic base of Rural areas is weak, professional and technical personnel lacks, sewage disposal technology level is not high, sewage treatment facility operational administrative is limited in one's ability, and complex structure is huge, invest that huge city domestic sewage is unifiedly collected, the method that focuses on and treatment facility do not meet domestic sewage in rural areas dispersion on the one hand and produce and water quality characteristics, and being also difficult to higher operational management skill level on the other hand can match with it, therefore, be difficult to apply in Rural areas.
Purification tank sewage disposal technology is used to process the dispersion type domestic wastewater outside municipal sewage system system, the sixties in 20th century as far back as Japan, and Japan just puts into effect relevant laws and regulations and the standard such as manufacture, installation and maintenance management of comparatively perfect purification tank.Through development for many years, the Japanese purification tank industrial structure is very complete, has set up a lot of organizational structure relevant to purification tank industry and association.Buried purification tank waste disposal plant has the features such as simple installation, decontamination effect improving is good, management mode is flexible, have also been obtained apply widely in the process of Japanese dispersion type domestic wastewater.In other American-European countries, also develop multiple scattering sewage treatment facility, to meet the demand of scattering sewage treatment.
Purification tank sewage disposal technology solves the ideal technology of decentralized sewage pollution problem at present, since introduction China, certain positive research and development is have also been obtained in China, and carried out some improvement, application also have accumulated some experiences, but the engineering playing exemplary role is actually rare.The purification tank sewage disposal device of current China exploitation, many technical parameter designs still lack science and reasonableness, and do not accomplish to suit measures to local conditions, gear to actual circumstances, randomness is larger.Moving-bed type purification tank as a kind of in patent of invention, publication number CN103073108A, comprise anaerobic zone, aerobic zone, settling region, mud district, using proportion close to the floating stuffing of water as microbe carrier, there is the advantage of activated sludge process and biological contact oxidation process; Patent three-decker sewage purifier, publication number CN203428983U, by arranging layer of plants, adsorption layer and metalling from top to bottom in cell body, play the different advantage of each layer to process pollutent various in the sanitary sewage of the daily discharge in rural area, structure is simple, and use procedure is not consumed energy without the need to power wheel drive; Patent is unpowered purification tank, publication number CN103086564A, utilize potential pressure, sewage self-flowing enters in system, by dividing plate, groove body is divided into the first anaerobism groove second anaerobism groove, fill netted skeleton circular cylindrical body filter material in anaerobism groove, provide anaerobion growth and breeding thus decomposing pollutant matter; A kind of domestic sewage of villages and small towns treatment unit of patent, publication number CN202754877U, purification tank main body is divided into oxygen-starved area, aerobic zone, second pond and sterilization pool, oxygen-starved area and inside, aerobic zone are provided with micro-pore aeration, and fill filler, adopt the technique of anoxic, aerobic treatment and rear sterilization, guarantee every microbiological indicator qualified discharge; A kind of sewage purifier of patent, publication number CN203128328U, floating thing filtering net, granulometric impurity filtering net, heavy metal processing layer by being provided with Large stone in cell body, automatically can remove rubbish and foreign material in sewage, purifying waste water simultaneously; Patent purifying domestic sewage groove treatment system, publication number CN203284290U, anaerobism collecting region, anaerobic nitrification district, contact aeration district, clear water settling region and sterilizating area is provided with in purification tank, wherein water purification lift pump is by solar powered, solves the in line and water resources recycle problem of sewage.
In sum, in order to solve, town & country regional waste-water pipe network fraction of coverage is low, sewage treatment facility lacks, sanitary sewage is in line causes the waste water control difficult problems such as water pollution, discharge for Rural areas dispersion type domestic wastewater features such as disperseing, the water yield is little, water quality daily variation factor is large simultaneously, and the current rural economy comparatively practical problems such as backwardness, operational management skill personnel shortage, develop that a kind of rational in infrastructure, reduced investment, processing costs are low, the dispersion type domestic wastewater treatment and purification groove equipment of convenient management, significant.
Summary of the invention
For solving the deficiencies in the prior art, the utility model provides that a kind of Highgrade integration, structure are simple, running cost is low, maintenance management is easy, have the purification tank for the treatment of dispersion type domestic wastewater of good Nitrogen/Phosphorus Removal simultaneously, is intended to solve the technical problem that Rural areas lacks the sewage disposal device simple, cost is low.
The utility model is achieved in that
A kind of purification tank for the treatment of dispersion type domestic wastewater, it is characterized in that: comprise cell body, water-in, water outlet, inspection port and supporting sealing cover, its interior separation is anaerobic room, anoxic room, aerobic room, settling chamber and sterilized room by dividing plate by described cell body; Described anaerobic room, anoxic room, aerobic room, settling chamber and sterilized room arrange overflow port be communicated with successively by arranging while dividing plate declines gradually overflow port, described anaerobic room is divided into aerobic area and the anaerobic zone of bottom connection by traverse baffle, described water-in is positioned at the top of aerobic area, described water outlet is positioned at the top of sterilized room, and the vertex of water outlet is under water-in lower-most point sea line.
Further preferably, the bottom of described anaerobic zone arranges flase floor I, the anaerobic zone water surface is provided with one piece of buoyancy aid; Described flase floor arranges filler.Buoyancy aid can intercept sewage in anaerobic zone and directly contact with upper air, provides good anaerobic environment, issues raw anaerobic biochemical reaction and purifies sewage being attached to the microbial process on filler.
Further preferably, the bottom of described anoxic room arranges the flase floor II with divider upright, and flase floor II arranges filler; The bottom of anoxic room, near arranging tank between the overflow port and flase floor of anaerobic room side or being that water pipe formed aquaporin I, is communicated with the overflow port of anaerobic room by anoxic indoor.Cross tank or cross water pipe and make from the sewage of anaerobic room inflow and mix from the sewage of aerobic room's backflow and form the downward flow direction, prevent from forming short stream simultaneously.
Further preferably, near arranging tank between the overflow port of side, anoxic room and the bottom of aerobic room or being that water pipe formed aquaporin II in described aerobic room, the overflow port of the bottom of aerobic room with anoxic room is communicated with; The outer middle and upper part of groove of described aerobic room is provided with water pump and sewage backflow pipe, the water outlet of described sewage backflow pipe is communicated with the top crossing aquaporin I of anoxic room, the bottom of described aerobic room arranges diffuser, described diffuser connects airway and is connected with the gas blower outside cell body, and described aerobic room is also placed with fills the floating stuffing that proportion is slightly less than water.To there is aerobic biochemical reaction under microbial process on floating stuffing sewage is purified further being attached to.
Further preferably, arranged tank or be that water pipe formed aquaporin III in described settling chamber near the overflow port of aerobic room side, be communicated with the overflow port of aerobic room by the hypomere of settling chamber, water outlet front end, settling chamber is provided with effluent weir; Described settling chamber arranges sludge pipe and sludge lifting pump, the upper end of described sludge pipe arranges Y-tube, sludge pipe is communicated with the top of aerobic area with mud return line by returned sluge switch valve, sludge pipe is by spoil disposal switch valve and mud vent pipe and cell body ft connection, and the entrance end of sludge pipe is located at the bottom of settling chamber.Mud in settling chamber, under lift pump effect, detaches settling chamber by sludge pipe, is back to the aerobic area of anaerobic room through mud return line, mixes mutually with the raw waste water flowed into from water-in; During outer blowdown mud, by switch valve, the mud in settling chamber is under lift pump effect, and mud is external through mud shore pipe drain tank, is finally removed the phosphoric in sewage by spoil disposal.
Further preferably, be provided with breviseptum in described sterilized room and form mixing section, be provided with dosing conduit in described mixing section, the lower end of described dosing conduit is located at the epimere of mixing section, and the upper end of dosing conduit is connected with chemicals dosing plant by valve.
Principle of work of the present utility model is:
Purification tank cell body is separated into anaerobic room, anoxic room, aerobic room, settling chamber and sterilized room, and each compartment arranged aquaporin and is communicated with, and made the sewage flowing into another compartment from a compartment form the downward flow direction, prevented from forming short stream.Purification tank adopts AAO technique, namely adopts anaerobism-anoxic-aerobic process process sanitary sewage.When disposing of sewage, sewage enters purification tank from water-in, and a series of biochemical reaction occurs through anaerobic room, anoxic room, aerobic room and settling chamber successively, sewage is purified process, then from water outlet qualified discharge after sterilized room is disinfected.When purification tank runs, first sewage and returned sluge enter the aerobic area of anaerobic room, the oxygen that minimizing sewage and returned sluge are brought into is to the impact of anaerobic zone microorganisms, and the microorganism in returned sluge starts in aerobic area progressively to release phosphorus, and carrying out ammonification for anaerobic zone microorganisms provides condition.Simultaneously, sewage is supreme down flows to purification tank aerobic area, upwards enters anaerobic zone again, when sewage or returned sluge enter above-mentioned anaerobic room after arriving bottom, issue raw anaerobic reaction being attached to the microbial process on filler, the partial organic substances degraded in sewage.Sewage after anaerobic reaction flowed into aquaporin through overflow port, mix with the sewage being back to anoxic room from aerobic room, combined sewage enters anoxic room, and amphimicrobian reaction occurs being attached under the microbial process on filler, the pollutent in sewage is removed further.Sewage flows into aerobic room through overflow port subsequently, by gas blower, aerobic room is carried out continuously or intermittent aeration, there is aerobic reaction being attached under the microbial process on floating stuffing, sewage purifies further, a sewage part through aerobic room's process is back to anoxic room, and a part flows into settling chamber through overflow port.In settling chamber, mud is natural subsidence under gravity, and the mud of precipitation, under lift pump effect, detaches settling chamber by sludge pipe, is back to the aerobic area of anaerobic room through mud return line, mixes mutually with the raw waste water flowed into from water-in; During outer blowdown mud, by switch valve, the mud in settling chamber is under lift pump effect, and mud is external through mud shore pipe drain tank, is finally removed the phosphoric in sewage by spoil disposal.OettIed sewage flows into sterilized room through overflow port, as required can to water body disinfection, final qualified discharge.
Compared with prior art, tool has the following advantages the utility model:
1, Highgrade integration, front equipment end, without the need to arranging septic tank in addition, adopts the microbial film+A optimized
2/ O sewage treatment process, fill high-performance bio filler, sewage treating efficiency is high, and excess sludge production is few.
2, the purification tank that the utility model provides adopts microbial film+A
2/ O technique, namely adopts anaerobic-anoxic-aerobic process process sanitary sewage, the efficient nutritive element such as nitrogen, phosphorus removed in sanitary sewage.
3, sewage passes in and out system by flow by gravity, saves operation power charge.
4, sewage and returned sluge before entering anaerobic room first by territory, an aerobic area, raising system is to the surge capability containing oxygen sewage and mud, thus the impact reduced anaerobic zone microorganisms, anaerobion can enter the reaction period fast, reduce system start-up time, improve organic matter degradation ability.
5, a water (flow) direction guiding area is set before the water inlet of each reaction chamber, makes, into water and the sewage in the reaction chamber entered, direct convection current does not occur, avoid short flow phenomenon to occur.
6, purification tank simple structure, invests little, and operation maintenance management is simple, maintenance is convenient, can complete maintenance without the need to access arrangement inside.
Accompanying drawing explanation
Fig. 1 is the elevational schematic of the utility model embodiment 1.
Fig. 2 is the schematic top plan view of diffuser.
Identify in figure: 1-cell body, 2-anaerobic room, 3-anoxic room, 4-aerobic room, 5-settling chamber, 6-water-in, 7-water outlet, 8-inspection port, 9-sealing cover, 10-traverse baffle, 11-buoyancy aid, 12a-flase floor I, 12b-flase floor II, 13a-filler I, 13b-filler II, 14-aerobic area, 15-anaerobic zone, 16-crosses aquaporin I, 17-aquaporin II, 18-floating stuffing, 19-airway, 20-diffuser, 21-gas blower, 22-sewage backflow pipe, 23-sewage backflow pump, 24-crosses aquaporin III, 25-sludge pipe, 26-mud return line, 27-mud vent pipe, 28-returned sluge switch valve, 29-spoil disposal switch valve, 30-sludge lifting pump, 31-effluent weir, 32-sterilized room, 33-mixing section, 34-chemicals dosing plant.
Below, by reference to the accompanying drawings the utility model is further described.
As shown in Figure 1, a kind of purification tank for the treatment of dispersion type domestic wastewater, comprise cell body 1, water-in 6, water outlet 7, inspection port 8 and supporting sealing cover 9, its interior separation is anaerobic room 2, anoxic room 3, aerobic room 4, settling chamber 5 and sterilized room 32 by dividing plate by cell body 1; Anaerobic room 2, anoxic room 3, aerobic room 4, settling chamber 5 and sterilized room 32 are communicated with successively by arranging overflow port while dividing plate declines gradually, anaerobic room 2 is divided into aerobic area 14 and the anaerobic zone 15 of bottom connection by traverse baffle 10, water-in 6 is positioned at the top of aerobic area 14, water outlet 7 is positioned at the top of sterilized room 32, and the vertex of water outlet 7 is under water-in 6 lower-most point sea line.
The bottom of anaerobic zone 15 arranges flase floor I 12a, anaerobic zone 15 water surface is provided with one piece of buoyancy aid 11; Flase floor 12a is arranged sinking type filler I 13a.
The bottom of anoxic room 3 arranges flase floor II 12b with divider upright, and flase floor II 12b arranges filler 13b; Near arranging tank between the overflow port of anaerobic room 2 side and flase floor 12b or being that water pipe formed aquaporin I 16 in anoxic room 3, the overflow port of the bottom of anoxic room 3 with anaerobic room 2 is communicated with.
Near arranging tank between the overflow port of side, anoxic room 3 and the bottom of aerobic room 4 or being that water pipe formed aquaporin II 17 in aerobic room 4, the overflow port of the bottom of aerobic room 4 with anoxic room 3 is communicated with; The outer middle and upper part of groove of aerobic room 4 is provided with water pump 23 and sewage backflow pipe 22, the water outlet of sewage backflow pipe 22 is communicated with the top crossing aquaporin I 16, the bottom of aerobic room 4 arranges diffuser 20, diffuser 20 connects airway 19 and is connected with the gas blower 21 outside cell body, and described aerobic room 4 is also placed with floating stuffing 18.
The interior overflow port near aerobic room 4 side in settling chamber 5 arranged tank or was that water pipe formed aquaporin III 24, and be communicated with by the overflow port of the hypomere of settling chamber 5 with aerobic room 4, water outlet front end, settling chamber 5 is provided with effluent weir 31; Settling chamber 5 arranges sludge pipe 25, the upper end Y-tube of sludge pipe 25, sludge pipe 25 is communicated with the top of mud return line 26 with aerobic area 14 by returned sluge switch valve 28, sludge pipe 25 is by spoil disposal switch valve 29 and mud vent pipe 27 and cell body 1 ft connection, and the entrance end of sludge pipe 25 is located at the bottom of settling chamber 5.
Be provided with breviseptum in sterilized room 32 and form mixing section 33, be provided with dosing conduit in mixing section 33, the lower end of dosing conduit is located at the epimere of mixing section 28, and the upper end of dosing conduit is connected with chemicals dosing plant 34 by valve.
PH, COD of sanitary sewage water outlet after purification tank process
3the leading indicator such as-N, SS, DO is stable reaches one-level B standard in " urban wastewater treatment firm pollutant emission standard " (GB18918-2002).