CN105198160A - Method for treating domestic sewage by aid of complex bacteria - Google Patents

Method for treating domestic sewage by aid of complex bacteria Download PDF

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Publication number
CN105198160A
CN105198160A CN201510624333.6A CN201510624333A CN105198160A CN 105198160 A CN105198160 A CN 105198160A CN 201510624333 A CN201510624333 A CN 201510624333A CN 105198160 A CN105198160 A CN 105198160A
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sewage
composite fungus
oxygen
fungus agent
time
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龚云霄
权攀
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Chong Qing Hao Garden Environmental Protection Technology Co Ltd
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Chong Qing Hao Garden Environmental Protection Technology Co Ltd
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Priority to CN201510624333.6A priority Critical patent/CN105198160A/en
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Abstract

The invention discloses a method for treating domestic sewage by the aid of complex bacteria. The method includes mixing and homogenizing the domestic sewage in regulating basins after the domestic sewage flows through coarse grids and fine grids; pumping the sewage in the regulating basins into integral membrane bioreactors by the aid of lifting pumps; respectively adding the hypoxia complex bacteria and the aerobic complex bacteria into the integral membrane bioreactors at specific moments; enabling the integral membrane bioreactors to stably run for a month; respectively supplementing small quantities of the hypoxia complex bacteria and the aerobic complex bacteria into the integral membrane bioreactors. The method has the advantages that the COD (chemical oxygen demand) removal rate of the treated sewage is 85%-95%, the BOD5 (biochemical oxygen demand 5) removal rate of the treated sewage is 90%-95%, the ammonia and nitrogen removal rates of the treated sewage are 90%, the TN (total nitrogen) removal rate of the treated sewage is 60%, the SS (suspended solid) removal rate of the treated sewage is 99%, the TP (total phosphorus) removal rate of the treated sewage is 75%-85%, and the quality of drained water can stably reach primary A standards of Pollutant Discharge Standards for Municipal Sewage Treatment Plants (GB 18918-2002).

Description

A kind of method utilizing composite fungus agent process sanitary sewage
Technical field
The invention belongs to sanitary sewage disposal field, be specifically related to a kind of method utilizing composite fungus agent and integral type film biological reactor process sanitary sewage.
Background technology
Sanitary sewage, be often referred to by certain that pollute, from the discharge water of life.The ill pathogen contaminant of principal pollutant of sewage, oxygen consumption pollutent, plant nutrient, toxic pollutant etc.The unprocessed sanitary sewage just directly discharged, can cause body eutrophication, so cause water hypoxia, smelly, algae grows in a large number, fish kills etc., the havoc eubiosis of water body.
Integral type film biological reactor successfully combines biochemical reaction and the equipment of film isolation technology, integrated, removableization.It is the Novel state Waste Water Treatment of membrane separation technique and biologic treating technique combination.Be a kind of new type water treatment technology combined with biological processing unit by film separation unit, replace second pond with membrane module in bio-reactor, keep high reactivity sludge concentration to reduce sewage treatment facility occupation of land, and by keeping low sludge loading to reduce sludge quantity.
In traditional biochemical process, under high temperature or low-temperature condition, the treatment effect of natural active sludge to pollutent is limited, microbe species and quantity is unstable, biochemical system starts that cycle pollutent index that is longer, sanitary sewage is on the low side, oxygen in water skewness, shock resistance are strong etc. in natural system, the stability of these water outlets affected all to a certain extent and property up to standard, and, carry mark improvement project in there is bottleneck.Composite fungus agent is mainly used in promoting contaminant removal efficiency in environment protection, by adding probiotics and nutrition agent, to make in sewage probiotics form dominant microflora, the sewage disposal stably reaching standard and put forward one of good method of target of can yet be regarded as.
Summary of the invention
(1) technical problem that will solve
For solving the problem, the present invention proposes a kind of method utilizing composite fungus agent process sanitary sewage.The method removal effect is stable, efficient, with low cost, mainly solves following problem:
1, because ambient temperature is too high or too low and nitrogen phosphorus ligands deleterious that is that cause;
2, in natural system, microbe species and quantity are unstable, the microorganism of denitrogenation dephosphorizing can not form dominant microflora, cause effluent quality unstable;
3, Sewage treatment systems starts excessive cycle;
4, lacking nutritive element in sewage causes microorganism growth to be not in good state.
(2) technical scheme
The method utilizing composite fungus agent process sanitary sewage of the present invention, combine with integral type film biological reactor, improve the efficiency of domestic sewage denitrifying-dephosphorizing, effluent quality can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A simultaneously and mark, and comprises successively by step:
A, sanitary sewage are after coarse rack and fine fack, and entering equalizing tank, to carry out mixing homogeneous;
B, by the sewage in equalizing tank by lift pump, pump in integral type film biological reactor;
C, submerged membrane reactor are divided into four districts, oxygen-starved area, aerobic zone, film district and battery limits, corresponding composite fungus agent is added respectively in two reaction zones in integral type film biological reactor, with rotary blower, aeration aerating is carried out to mud mixture simultaneously, make in reactor, to form the dominant flora of probiotics.Oxygen-starved area adopts agitator to be mixed by muddy water, and aerobic zone and film district gas-water ratio are 12:1, and the residence time is 3 ~ 5h, and sludge concentration is 8000 ~ 12000mg/L;
D, water outlet adopt self-priming product water pump, water are crossed film sucking-off, after flowing through clean water basin, enter sterilization pool, after disinfection by chlorine dioxide, can discharge, or reuse, and available chlorine injected volume is 30mg/L.
Further, the method utilizing composite fungus agent process sanitary sewage according to claim 1, it is characterized in that: the water quality of sanitary sewage is as follows: COD is 200mg/L ~ 600mg/L, BOD5 be 120mg/L ~ 480mg/L, SS be 150mg/L ~ 300mg/L, TN is 40mg/L ~ 60mg/L, and ammonia-nitrogen content is 20mg/L ~ 50mg/L, TP is 3.5mg/L ~ 7mg/L, pH value is 6 ~ 9.
Further, described composite fungus agent is divided into two kinds, and one is oxygen-starved, and one is aerobic.Oxygen-starved composite fungus agent, based on denitrifying bacterium, accompanies by biological enzyme and nutrition agent.Aerobic composite fungus agent comprises Nitrosomonas, bacterium nitrobacter, Saccharomycodes, micrococcus sp, genus bacillus, polyP bacteria, biological enzyme and nutrition agent.The time that adds of oxygen-starved composite fungus agent is divided into twice, first time for integral type membrane bioreactor fill water for the first time time, dosage is 0.1 ~ 0.5kg/m 3sewage, another time is after running one month continuously, and second time dosage is primary 10%.The time that adds of aerobic composite fungus agent is also divided into twice, and first time, dosage was 0.1 ~ 0.5kg/m for after oxygen-starved composite fungus agent adds 2 days 3sewage, another time is after running one month continuously, and second time dosage is primary 10%.
Further, described submerged membrane reactor is divided into four districts, oxygen-starved area, aerobic zone, film district and battery limits, and reactor carries internal reflux system, by film district sludge reflux to oxygen-starved area.
Further, described composite fungus agent is divided into two kinds, and one is oxygen-starved, and one is aerobic.Oxygen-starved composite fungus agent, based on denitrifying bacterium, accompanies by biological enzyme and nutrition agent.Aerobic composite fungus agent comprises Nitrosomonas, bacterium nitrobacter, Saccharomycodes, micrococcus sp, genus bacillus, polyP bacteria, biological enzyme and nutrition agent.The time that adds of oxygen-starved composite fungus agent is divided into twice, first time for integral type membrane bioreactor fill water for the first time time, dosage is 0.1 ~ 0.5kg/m 3sewage, another time is after running one month continuously, and second time dosage is primary 10%.The time that adds of aerobic composite fungus agent is also divided into twice, and first time, dosage was 0.1 ~ 0.5kg/m for after oxygen-starved composite fungus agent adds 2 days 3sewage, another time is after running one month continuously, and second time dosage is primary 10%.
Further, the mud produced in described reaction process is that oxygen-starved area and aerobic zone are minimum at most with film district.Mud is back to oxygen-starved area by film district, supplements the situation of leading portion mud undersupply.Due to the enclosed feature of membrane bioreactor, organic sludge output is few, and mud every three months is arranged outward once in equalizing tank.
Further, in described sanitary sewage, COD clearance is 85% ~ 95%, BOD5 clearance is 90% ~ 95%, and ammonia nitrogen removal frank is 90%, TN clearance be 60%, SS clearance be 99%, TP clearance is 75% ~ 85%; Effluent quality can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A and marks by Simultaneous Stabilization.
(3) beneficial effect
Compared with prior art, it has following beneficial effect in the present invention:
1, extraneous too high or too low envrionment temperature reduces the impact for the treatment of effect;
2, the microorganism allowing to efficiency denitrification and dephosphorization forms dominant microflora, stable effluent quality;
3, shorten Sewage treatment systems and start the cycle;
4, the growth conditions that microorganism keeps normally good can be made;
5, effluent quality can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A and marks by Simultaneous Stabilization.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and the specific embodiments the present invention is described in further detail.
A kind of method utilizing composite fungus agent process sanitary sewage as shown in Figure 1, comprises the following steps:
Step one, sanitary sewage are after coarse rack and fine fack, and entering equalizing tank, to carry out mixing homogeneous.The water quality of sanitary sewage is as follows: COD is 200mg/L ~ 600mg/L, BOD5 be 120mg/L ~ 480mg/L, SS be 150mg/L ~ 300mg/L, TN is 40mg/L ~ 60mg/L, and ammonia nitrogen is 20mg/L ~ 50mg/L, TP is 3.5mg/L ~ 7mg/L, pH value is 6 ~ 9.
Step 2, by the sewage in equalizing tank by lift pump, pump in integral type film biological reactor.Submerged membrane reactor is divided into four districts, oxygen-starved area, aerobic zone, film district and battery limits, and reactor carries internal reflux system, by film district sludge reflux to oxygen-starved area.
Step 3, in integral type film biological reactor, fill water after shut down, in oxygen-starved area, add oxygen-starved composite fungus agent, dosage is 0.1 ~ 0.5kg/m 3sewage, shut down after 2 days, and start Sewage treatment systems, add aerobic composite fungus agent in aerobic zone, dosage is 0.1 ~ 0.5kg/m 3sewage, whole treatment system brings into operation subsequently, and the oxygen-starved area residence time is 1 ~ 2h, and aerobic zone adopts rotary blower to carry out aeration aerating to mud mixture, and gas-water ratio is 12:1, and the residence time is 3 ~ 5h.Continuous and steady operation, after one month, supplements two kinds of microbial inoculums respectively, and magnitude of recruitment is 10% ~ 20% of dosage for the first time.After this be continuously-running.
Step 4, water outlet adopt self-priming product water pump, water are crossed film sucking-off, after flowing through clean water basin, enter disinfection by chlorine dioxide pond, after disinfection by chlorine dioxide, can discharge, or reuse.The treatment process of this kind of sanitary sewage, the mud produced in reaction process is that oxygen-starved area and aerobic zone are minimum at most with film district.Mud is back to oxygen-starved area by film district, supplements the situation of leading portion mud undersupply.Due to the enclosed feature of membrane bioreactor, organic sludge output is few, and mud every three months is arranged outward once in equalizing tank.
In following examples, before step one, sanitary sewage carries out pre-treatment in oil trap and septic tank.
In following examples, in step 4, in integral type film biological reactor, MLSS concentration is 8000 ~ 12000mg/L, SRT is 30 days.
In following examples, for checking composite fungus agent is to the beneficial effect for the treatment of effect, maintaining the oxygen-starved area residence time is 1.2h, and the membrane bioreactor residence time is 4.2h, and the sterilization residence time is that 30min, pH maintain between 6 ~ 9, and temperature maintains about 25 DEG C.
Embodiment 1
Small-sized sanitary sewage disposal point, treatment scale is 1000m3/d, and in former water, COD is 210.5mg/L, SS is 213.5mg/L, ammonia nitrogen be 25.8mg/L, TN be 45.9mg/L, TP be 4.6mg/L, pH is 7.2.Oxygen-starved composite fungus agent dosage is 110kg first, aerobic composite fungus agent dosage is 110kg, second time two kinds of composite fungus agent dosages are 11kg, Continuous Observation is after 30 days, average effluent quality is COD be 28.7mg/L, SS is 2.1mg/L, ammonia nitrogen be 1.5mg/L, TN be 14.8mg/L, TP be 0.5mg/L, pH is 7.5, reaches " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A and marks.
Embodiment 2
Small-sized sanitary sewage disposal point, treatment scale is 500m 3/ d, in former water, COD is 367.1mg/L, SS is 254.9mg/L, ammonia nitrogen be 42.6mg/L, TN be 53.7mg/L, TP be 4.3mg/L, pH is 6.9.Oxygen-starved composite fungus agent dosage is 81.6kg first, aerobic composite fungus agent dosage is 81.6kg, second time two kinds of composite fungus agent dosages are 8.2kg, Continuous Observation is after 30 days, average effluent quality is COD be 36.7mg/L, SS is 2.5mg/L, ammonia nitrogen be 4.2mg/L, TN be 14.5mg/L, TP be 0.3mg/L, pH is 6.9, reaches " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A and marks.
Embodiment 3
Small-sized sanitary sewage disposal point, treatment scale is 200m 3/ d, in former water, COD is 450.1mg/L, SS is 280.6mg/L, ammonia nitrogen be 45.7mg/L, TN be 51.8mg/L, TP be 4.5mg/L, pH is 7.1.Oxygen-starved composite fungus agent dosage is 23.5kg first, aerobic composite fungus agent dosage is 23.5kg, second time two kinds of composite fungus agent dosages are 2.4kg, Continuous Observation is after 30 days, average effluent quality is COD be 40.8mg/L, SS is 2.3mg/L, ammonia nitrogen be 4.1mg/L, TN be 14.8mg/L, TP be 0.3mg/L, pH is 7.0, reaches " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A and marks.
The beneficial effect utilizing the method for composite fungus agent process sanitary sewage of the present invention:
1, extraneous too high or too low envrionment temperature reduces the impact for the treatment of effect;
2, the microorganism allowing to efficiency denitrification and dephosphorization forms dominant microflora, stable effluent quality;
3, shorten Sewage treatment systems and start the cycle;
4, the growth conditions that microorganism keeps normally good can be made;
5, effluent quality can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A and marks by Simultaneous Stabilization.
Embodiment recited above is only be described the preferred embodiment of the present invention, not limits the spirit and scope of the present invention.Under the prerequisite not departing from design concept of the present invention; the various modification that this area ordinary person makes technical scheme of the present invention and improvement; all should drop into protection scope of the present invention, the technology contents of request protection of the present invention, all records in detail in the claims.

Claims (6)

1. one kind utilizes the method for composite fungus agent process sanitary sewage, it is characterized in that: combine with integral type film biological reactor, improve the efficiency of domestic sewage denitrifying-dephosphorizing, effluent quality can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A simultaneously and mark, and comprises successively by step:
A, sanitary sewage are after coarse rack and fine fack, and entering equalizing tank, to carry out mixing homogeneous;
B, by the sewage in equalizing tank by lift pump, pump in integral type film biological reactor;
C, submerged membrane reactor are divided into four districts, oxygen-starved area, aerobic zone, film district and battery limits, corresponding composite fungus agent is added respectively in two reaction zones in integral type film biological reactor, with rotary blower, aeration aerating is carried out to mud mixture simultaneously, make in reactor, to form the dominant flora of probiotics; Oxygen-starved area adopts agitator to be mixed by muddy water, and aerobic zone and film district gas-water ratio are 12:1, and the residence time is 3 ~ 5h, and sludge concentration is 8000 ~ 12000mg/L;
D, water outlet adopt self-priming product water pump, water are crossed film sucking-off, after flowing through clean water basin, enter sterilization pool, after disinfection by chlorine dioxide, can discharge, or reuse, and available chlorine injected volume is 30mg/L.
2. the method utilizing composite fungus agent process sanitary sewage according to claim 1, it is characterized in that: the water quality of sanitary sewage is as follows: COD is 200mg/L ~ 600mg/L, BOD5 be 120mg/L ~ 480mg/L, SS be 150mg/L ~ 300mg/L, TN is 40mg/L ~ 60mg/L, and ammonia-nitrogen content is 20mg/L ~ 50mg/L, TP is 3.5mg/L ~ 7mg/L, pH value is 6 ~ 9.
3. the method utilizing composite fungus agent process sanitary sewage according to claim 1, it is characterized in that: described submerged membrane reactor is divided into four districts, oxygen-starved area, aerobic zone, film district and battery limits, submerged membrane reactor carries internal reflux system, by film district sludge reflux to oxygen-starved area.
4. the method utilizing composite fungus agent process sanitary sewage according to claim 1, is characterized in that: described composite fungus agent is divided into two kinds, and one is oxygen-starved, and one is aerobic; Oxygen-starved composite fungus agent, based on denitrifying bacterium, accompanies by biological enzyme and nutrition agent; Aerobic composite fungus agent comprises Nitrosomonas, bacterium nitrobacter, Saccharomycodes, micrococcus sp, genus bacillus, polyP bacteria, biological enzyme and nutrition agent; The time that adds of oxygen-starved composite fungus agent is divided into twice, first time for integral type membrane bioreactor fill water for the first time time, dosage is 0.1 ~ 0.5kg/m 3sewage, another time is after running one month continuously, and second time dosage is primary 10%; The time that adds of aerobic composite fungus agent is also divided into twice, and first time, dosage was 0.1 ~ 0.5kg/m for after oxygen-starved composite fungus agent adds 2 days 3sewage, another time is after running one month continuously, and second time dosage is primary 10%.
5. the method utilizing composite fungus agent process sanitary sewage according to claim 1, is characterized in that: the mud produced in described reaction process, is that oxygen-starved area and aerobic zone are minimum at most with film district; Mud is back to oxygen-starved area by film district, supplements the situation of leading portion mud undersupply; Due to the enclosed feature of membrane bioreactor, organic sludge output is few, and mud every three months is arranged outward once in equalizing tank.
6. the method utilizing composite fungus agent process sanitary sewage according to claim 1, it is characterized in that: in described sanitary sewage, COD clearance is 85% ~ 95%, BOD5 clearance is 90% ~ 95%, ammonia nitrogen removal frank is 90%, TN clearance is 60%, SS clearance is 99%, TP clearance is 75% ~ 85%; Effluent quality can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level A and marks by Simultaneous Stabilization.
CN201510624333.6A 2015-09-25 2015-09-25 Method for treating domestic sewage by aid of complex bacteria Pending CN105198160A (en)

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CN106589004A (en) * 2016-10-12 2017-04-26 环境保护部华南环境科学研究所 Treating method for pig manure
CN107721080A (en) * 2017-11-17 2018-02-23 广州恩业电子科技有限公司 MBR and A based on modified form2The small towns decentralized type sewage process integrated system of/O technologies
CN108328735A (en) * 2018-03-21 2018-07-27 碧沃丰工程有限公司 A kind of method of ammonia nitrogen in removal Wastewater from Pig Farm
CN109896713A (en) * 2019-04-09 2019-06-18 黑龙江省福林环保科技有限公司 A method of sewage is handled using ABS microbial bacterial agent
CN109942086A (en) * 2019-04-08 2019-06-28 重庆淏园环保科技有限公司 MBR integration apparatus and its MBR sewage water treatment method with flexible diaphragm
CN110468081A (en) * 2019-09-17 2019-11-19 湖南艾布鲁环保科技股份有限公司 Composite bacteria agent and its preparation method and application

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CN110468081A (en) * 2019-09-17 2019-11-19 湖南艾布鲁环保科技股份有限公司 Composite bacteria agent and its preparation method and application

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Application publication date: 20151230