CN105254156B - A device and method for reducing the amount of excess activated sludge - Google Patents
A device and method for reducing the amount of excess activated sludge Download PDFInfo
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- CN105254156B CN105254156B CN201510690219.3A CN201510690219A CN105254156B CN 105254156 B CN105254156 B CN 105254156B CN 201510690219 A CN201510690219 A CN 201510690219A CN 105254156 B CN105254156 B CN 105254156B
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- 239000010802 sludge Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000008569 process Effects 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 238000005273 aeration Methods 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical group [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 2
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 14
- 239000011574 phosphorus Substances 0.000 abstract description 14
- 230000009467 reduction Effects 0.000 abstract description 13
- 229910019142 PO4 Inorganic materials 0.000 abstract description 12
- 239000010452 phosphate Substances 0.000 abstract description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 abstract description 9
- 239000001301 oxygen Substances 0.000 abstract description 9
- 239000005416 organic matter Substances 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 4
- 238000006731 degradation reaction Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 2
- 239000007787 solid Substances 0.000 description 15
- 239000007788 liquid Substances 0.000 description 6
- 239000010865 sewage Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/20—Sludge processing
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- Treatment Of Sludge (AREA)
- Activated Sludge Processes (AREA)
Abstract
本发明属于污泥处理技术领域，具体涉及一种剩余活性污泥的减量化处理装置及方法。本发明采用特定的处理装置以及处理方法，对剩余活性污泥采用多周期压力循环变化的方式进行处理，大大增加了氧的转移利用效率，提高了有机物的降解速度，从而具有更高的反应速率和去除效率；将处理完的污泥在生物反应器内部压力为P时排出，实现了浮渣与水的快速高效分离，并且在处理过程中辅以除磷步骤，使得不溶性磷酸盐与浮渣一同上浮排出，进而达到除磷目的。
The invention belongs to the technical field of sludge treatment, and in particular relates to a reduction treatment device and method for surplus activated sludge. The present invention adopts a specific treatment device and a treatment method to treat excess activated sludge in a manner of multi-cycle pressure cycle change, which greatly increases the efficiency of oxygen transfer and utilization, improves the degradation rate of organic matter, and thus has a higher reaction rate and removal efficiency; the treated sludge is discharged when the internal pressure of the bioreactor is P, which realizes the rapid and efficient separation of scum and water, and the phosphorus removal step is supplemented in the treatment process, so that insoluble phosphate and scum Float and discharge together to achieve the purpose of phosphorus removal.
Description
技术领域 technical field
本发明属于污泥处理技术领域，具体涉及一种剩余活性污泥的减量化处理装置及方法。 The invention belongs to the technical field of sludge treatment, and in particular relates to a reduction treatment device and method for surplus activated sludge.
背景技术 Background technique
剩余污泥是污水生物处理过程中产生的固体沉淀物，是污水处理后的附属品，这些剩余活性污泥的主要成分为细菌细胞物质，有机物浓度高且主要为固形物，如不进行妥善处理，这些污泥非常容易对地下水、土壤等造成二次污染，成为环境安全和公众健康的威胁。好氧生物处理技术是污泥减量化处理的有效方法之一。目前，生物污泥的好氧生物减量处理方法主要为常压好氧消化工艺，由于待处理剩余污泥的固体浓度高、有机物浓度高，需要消耗较多的溶解氧，而常压下曝气设备对氧的转移效率低，混合液中溶解氧浓度低，因此，常压污泥好氧消化工艺存在着对生物污泥的降解速率慢，需要较长的反应时间(20d左右)及较大的供气量等问题。 Excess sludge is the solid sediment produced in the process of sewage biological treatment, which is an accessory after sewage treatment. The main component of these excess activated sludge is bacterial cell matter, with a high concentration of organic matter and mainly solid matter. If it is not properly treated , These sludges are very easy to cause secondary pollution to groundwater, soil, etc., and become a threat to environmental safety and public health. Aerobic biological treatment technology is one of the effective methods for sludge reduction treatment. At present, the aerobic biological reduction treatment method of biological sludge is mainly an aerobic digestion process at atmospheric pressure. Due to the high solid concentration and high concentration of organic matter in the remaining sludge to be treated, it needs to consume more dissolved oxygen. The oxygen transfer efficiency of the gas equipment is low, and the dissolved oxygen concentration in the mixed liquid is low. Therefore, the atmospheric sludge aerobic digestion process has a slow degradation rate to the biological sludge, which requires a long reaction time (about 20d) and relatively low Large gas supply and other issues.
发明内容 Contents of the invention
针对现有技术的不足之处，本发明提出了一种剩余活性污泥的减量化处理装置及方法，采用本发明，可以有效实现剩余活性污泥的减量化处理。 Aiming at the deficiencies of the prior art, the present invention proposes a device and method for reducing the amount of excess activated sludge. By adopting the present invention, the amount reduction of excess activated sludge can be effectively realized.
本发明所述的剩余活性污泥的减量化处理装置包括高压生物反应器和浮上分离器，高压生物反应器底部通过出样管与浮上分离器底部连通；浮上分离器一侧下方设有澄清水排放管；高压生物反应器顶部设有排气主管，排气主管上设有排气支管；高压生物反应器由上至下依次设有进样管、加药管和曝气供气管。 The reduction treatment device for excess activated sludge of the present invention comprises a high-pressure bioreactor and a floating separator, the bottom of the high-pressure bioreactor communicates with the bottom of the floating separator through a sample outlet; Water discharge pipe; the top of the high-pressure bioreactor is equipped with an exhaust main pipe, and the exhaust main pipe is provided with an exhaust branch pipe; the high-pressure bioreactor is sequentially provided with a sampling pipe, a dosing pipe and an aeration supply pipe from top to bottom.
所述的排气主管上设有至少两个排气支管；所述的每个排气支管上均设有电磁阀和手动阀门。 The exhaust main pipe is provided with at least two exhaust branch pipes; each exhaust branch pipe is provided with a solenoid valve and a manual valve.
所述的高压生物反应器顶部设有压力表和可调压安全阀。 The top of the high-pressure bioreactor is provided with a pressure gauge and an adjustable pressure safety valve.
应用本发明所述的装置进行剩余活性污泥的减量化处理的方法，其具体步骤为： Apply the device of the present invention to carry out the method for the reduction treatment of surplus activated sludge, its concrete steps are:
(1)将待处理的剩余活性污泥放入高压生物反应器，开启曝气供气管； (1) Put the remaining activated sludge to be treated into the high-pressure bioreactor, and open the aeration air supply pipe;
(2)调整排气支管，在300-500s的时间内将高压生物反应器内的压力均匀的由0上升至P，然后在300-500s的时间内将高压生物反应器内的压力由P均匀下降为0，完成一个循环处理； (2) Adjust the exhaust branch pipe to uniformly increase the pressure in the high-pressure bioreactor from 0 to P within 300-500s, and then uniformly increase the pressure in the high-pressure bioreactor from P within 300-500s Decrease to 0, complete a loop processing;
(3)按照步骤(2)所述的循环处理过程循环处理4-6天后，通过加药管向高压生物反应器内加入除磷剂，混合反应20-30min，然后将生物反应器内部压力升至P时，将处理完的污泥通过出样管排入浮上分离器分离。 (3) After 4-6 days of cyclic treatment according to the cyclic treatment process described in step (2), add phosphorus removal agent into the high-pressure bioreactor through the dosing pipe, mix and react for 20-30min, and then increase the internal pressure of the bioreactor At P, the treated sludge is discharged into the floating separator through the sample outlet pipe for separation.
具体工作时，将待处理的剩余活性污泥放入高压生物反应器，开启曝气供气管，为了保证所述的剩余活性污泥能够较好的曝气，保证反应器内氧的利用率，本发明所述的曝气供气管的供气量为1.5-3.0L空气/h.L池容，而且在该供气量条件下，在相应的时间内，可以保证高压生物反应器内的压力达到处理剩余活性污泥所需的压力条件。 During the specific work, put the remaining activated sludge to be treated into the high-pressure bioreactor, open the aeration air supply pipe, in order to ensure that the remaining activated sludge can be well aerated and ensure the utilization rate of oxygen in the reactor, The air supply volume of the aeration air supply pipe of the present invention is 1.5-3.0L air/h.L pool volume, and under the condition of this air supply volume, within a corresponding time, the pressure in the high pressure bioreactor can be guaranteed to reach Pressure conditions required for residual activated sludge.
本发明在具体处理过程中首先调整排气支管，在300-500s的时间内将高压生物反应器内的压力均匀的由0上升至P，然后在300-500s的时间内将高压生物反应器内的压力由P均匀下降为0，完成一个循环处理；之所以采用这种处理方式，是因为在运行过程中剩余活性污泥中的细菌等微生物处于压力不断变化的环境中，可以强化其细胞膜的通透性，提高物质的传质效率。当反应器内的压力由0上升至P时，可以增强剩余活性污泥中的溶解氧浓度；由于本发明所述的曝气过程是在较之常规曝气要高出数倍乃至数十倍的水压下充氧，剩余活性污泥中会溶有过饱和空气以及生物氧化反应过程生成的废气(如CO2等)，因此当反应器内的压力由P下降至0时，可以脱除剩余活性污泥中所溶入的废气，以利于剩余活性污泥中重新注入新鲜空(氧)气。采用本发明所述的循环处理过程，大大增加了氧的利用率，有机物降解速度快，具有更高的反应速率和去除效率，效果显著。为了达到较好的处理效果，本发明所述的最高压力P为5-15atm，最高压力过小，循环变压效果不明显，最终处理效果不好；最高压力过大，设备负荷过大。 In the specific process, the present invention firstly adjusts the exhaust branch pipe to uniformly increase the pressure in the high-pressure bioreactor from 0 to P within 300-500s, and then raise the pressure in the high-pressure bioreactor to P within 300-500s. The pressure of P is uniformly decreased from P to 0, and a cycle of treatment is completed; the reason why this treatment method is adopted is that the bacteria and other microorganisms in the remaining activated sludge are in an environment where the pressure is constantly changing during the operation process, which can strengthen the cell membrane. Permeability, improve the mass transfer efficiency of substances. When the pressure in the reactor rises from 0 to P, the dissolved oxygen concentration in the remaining activated sludge can be enhanced; because the aeration process of the present invention is several times or even dozens of times higher than the conventional aeration Oxygenation under the water pressure, supersaturated air and waste gas (such as CO2 , etc.) The exhaust gas dissolved in the remaining activated sludge is conducive to the reinjection of fresh air (oxygen) into the remaining activated sludge. The utilization rate of oxygen is greatly increased by adopting the circulation treatment process of the invention, the degradation speed of organic matters is fast, and the reaction rate and removal efficiency are higher, and the effect is remarkable. In order to achieve a better treatment effect, the maximum pressure P of the present invention is 5-15 atm, if the maximum pressure is too small, the effect of cyclic pressure transformation is not obvious, and the final treatment effect is not good; if the maximum pressure is too high, the equipment load is too large.
为了对高压生物反应器内的压力实现方便有效控制，本发明所述的排气主管上设有至少两个排气支管，优选10个；所述的每个排气支管上均设有电磁阀和手动阀门，由PLC按时间设定依次控制电磁阀的开启与关闭。电磁阀仅通过开或闭控制排气管是排气还是关闭，不能调节排气量，需要通过调节手动阀门开启度大小控制每根排气支管出气量，调整好开启度后处于敞开状态。电磁阀和手动阀门两者联合应用，能够方便有效的控制反应器内压力，适应多种运行条件。 In order to realize convenient and effective control of the pressure in the high-pressure bioreactor, the exhaust main pipe of the present invention is provided with at least two exhaust branch pipes, preferably 10; each of the exhaust branch pipes is provided with a solenoid valve And manual valves, the PLC controls the opening and closing of the solenoid valves in sequence according to the time setting. The solenoid valve only controls whether the exhaust pipe is exhausted or closed by opening or closing, and cannot adjust the exhaust volume. It is necessary to control the air output of each exhaust branch pipe by adjusting the opening degree of the manual valve. After adjusting the opening degree, it is in an open state. The joint application of solenoid valve and manual valve can conveniently and effectively control the pressure in the reactor and adapt to various operating conditions.
本发明中的剩余活性污泥经过生物降解后，会释放出大量磷酸根，浓度可达50～100mgP/L。因此，本发明在处理结束前用高压加药泵向反应器中加入铁盐或铝盐除磷剂，混合反应20-30min，除磷剂在反应器中与磷酸根混合反应生成不溶性的磷酸盐，在浮上分离器中与污泥一起上浮，从而达到从澄清液中去除磷的目的。所述的除磷剂为硫酸铝或氯化铁；除磷剂与磷酸盐的摩尔比为Fe3+/Al3+:P＝1.1。 After the residual activated sludge in the present invention is biodegraded, a large amount of phosphate radicals will be released, and the concentration can reach 50-100 mgP/L. Therefore, the present invention uses a high-pressure dosing pump to add iron salt or aluminum salt dephosphorization agent to the reactor before the treatment is completed, and mixes and reacts for 20-30 minutes. The dephosphorization agent mixes with phosphate in the reactor to generate insoluble phosphate , Floating together with the sludge in the floating separator, so as to achieve the purpose of removing phosphorus from the clarified liquid. The phosphorus removal agent is aluminum sulfate or ferric chloride; the molar ratio of the phosphorus removal agent to phosphate is Fe 3+ /Al 3+ : P=1.1.
之所以将处理完的剩余活性污泥在生物反应器内部压力为P时，通过出样管排入浮上分离器进行分离是因为此时压力很大，大量空气溶解在剩余活性污泥中，当其经出样管流入上浮分离器时，由于出样管出口处压力大大降低，溶解在剩余活性污泥中的空气析出形成大量微小气泡，这些微小气泡粘附在剩余活性污泥固体颗粒上，剩余活性污泥在微小气泡的浮力作用下迅速上浮到液面形成浮渣而被分离去除，被澄清的水则流入污水厂的污水处理流程中进行处理。 The reason why the treated residual activated sludge is discharged into the floating separator through the sample outlet pipe for separation when the internal pressure of the bioreactor is P is because the pressure is very high at this time, and a large amount of air dissolves in the residual activated sludge. When it flows into the floating separator through the sample outlet pipe, because the pressure at the outlet of the sample outlet pipe is greatly reduced, the air dissolved in the remaining activated sludge is precipitated to form a large number of tiny bubbles, and these tiny bubbles adhere to the solid particles of the remaining activated sludge. Under the buoyancy of micro-bubbles, the remaining activated sludge quickly floats to the liquid surface to form scum, which is separated and removed, and the clarified water flows into the sewage treatment process of the sewage plant for treatment.
本发明所述的待处理的剩余活性污泥是指污水处理厂产生的剩余活性污泥，悬浮固体浓度为8000～30000mg/L，主要为细菌细胞物质，有机物浓度高且主要为固形物。 The residual activated sludge to be treated in the present invention refers to the residual activated sludge produced by a sewage treatment plant, with a suspended solid concentration of 8000-30000 mg/L, mainly bacterial cell matter, high organic matter concentration and mainly solid matter.
综上所述，本发明采用特定的处理装置以及处理方法，对剩余活性污泥采用多周期压力循环变化的方式进行处理，大大增加了氧的转移利用效率，提高了有机物的降解速度，从而具有更高的反应速率和去除效率；将处理完的污泥在生物反应器内部压力为P时排出，实现了浮渣与水的快速高效分离，并且在处理过程中辅以除磷步骤，使得不溶性磷酸盐与浮渣一同上浮排出，进而达到除磷目的。 In summary, the present invention adopts a specific treatment device and treatment method to treat excess activated sludge in a manner of multi-cycle pressure cycle change, which greatly increases the efficiency of oxygen transfer and utilization, improves the degradation rate of organic matter, and thus has Higher reaction rate and removal efficiency; the treated sludge is discharged when the internal pressure of the bioreactor is P, which realizes the rapid and efficient separation of scum and water, and a phosphorus removal step is assisted in the treatment process, making the insoluble Phosphate and scum are floated up and discharged together, so as to achieve the purpose of phosphorus removal.
附图说明 Description of drawings
图1为本发明结构示意图； Fig. 1 is a structural representation of the present invention;
图中：1、高压生物反应器，2、浮上分离器，3、出样管，4、澄清水排放管，5、排气主管，6、排气支管，7、进样管，8、加药管，9、曝气供气管，10、电磁阀，11、手动阀门，12、压力表，13、可调压安全阀。 In the figure: 1. High-pressure bioreactor, 2. Floating separator, 3. Sample outlet pipe, 4. Clarified water discharge pipe, 5. Exhaust main pipe, 6. Exhaust branch pipe, 7. Sample inlet pipe, 8. Drug pipe, 9, aeration air supply pipe, 10, solenoid valve, 11, manual valve, 12, pressure gauge, 13, adjustable pressure safety valve.
具体实施方式 detailed description
实施例1 Example 1
一种剩余活性污泥的减量化处理装置，该装置包括高压生物反应器1和浮上分离器2，高压生物反应器1底部通过出样管3与浮上分离器2底部连通；浮上分离器2一侧下方设有澄清水排放管4；高压生物反应器1顶部设有排气主管5，排气主管5上设有排气支管6；高压生物反应器1由上至下依次设有进样管7、加药管8和曝气供气管9。 A reduction treatment device for excess activated sludge, the device includes a high-pressure bioreactor 1 and a floating separator 2, the bottom of the high-pressure bioreactor 1 communicates with the bottom of the floating separator 2 through a sample outlet pipe 3; the floating separator 2 A clarified water discharge pipe 4 is provided under one side; an exhaust main pipe 5 is provided on the top of the high-pressure bioreactor 1, and an exhaust branch pipe 6 is provided on the exhaust main pipe 5; the high-pressure bioreactor 1 is sequentially provided with sampling Pipe 7, dosing pipe 8 and aeration air supply pipe 9.
所述的排气主管5上设有10个排气支管6；所述的每个排气支管6上均设有电磁阀10和手动阀门11。 The exhaust main pipe 5 is provided with 10 exhaust branch pipes 6; each exhaust branch pipe 6 is provided with a solenoid valve 10 and a manual valve 11.
所述的高压生物反应器1顶部设有压力表12和可调压安全阀13。 The top of the high-pressure bioreactor 1 is provided with a pressure gauge 12 and an adjustable pressure safety valve 13 .
应用上述的装置进行剩余活性污泥的减量化处理的方法，其具体步骤为： Applying the above-mentioned device to carry out the method for the reduction treatment of excess activated sludge, its concrete steps are:
(1)将待处理的剩余活性污泥放入高压生物反应器1，开启曝气供气管9； (1) Put the remaining activated sludge to be treated into the high-pressure bioreactor 1, and open the aeration air supply pipe 9;
(2)调整排气支管6，在500s的时间内将高压生物反应器1内的压力均匀的由0上升至P，然后在500s的时间内将高压生物反应器1内的压力由P均匀下降为0，完成一个循环处理； (2) Adjust the exhaust branch pipe 6 to uniformly increase the pressure in the high-pressure bioreactor 1 from 0 to P within 500 s, and then uniformly decrease the pressure in the high-pressure bioreactor 1 from P within 500 s If it is 0, a loop processing is completed;
(3)按照步骤2所述的循环处理过程循环处理6天后，通过加药管8向高压生物反应器1内加入除磷剂，混合反应20min，然后将生物反应器1内部压力升至P时，将处理完的污泥通过出样管3排入浮上分离器2分离。 (3) After 6 days of circulation treatment according to the circulation treatment process described in step 2, add the dephosphorization agent into the high-pressure bioreactor 1 through the dosing pipe 8, mix and react for 20 minutes, and then raise the internal pressure of the bioreactor 1 to P , discharge the treated sludge into the floating separator 2 through the sample outlet pipe 3 for separation.
所述的曝气供气管1的供气量3.0L空气/h.L池容。 The air supply volume of the aeration air supply pipe 1 is 3.0L air/h.L pool capacity.
所述的压力P为15atm。 Said pressure P is 15 atm.
所述的除磷剂为硫酸铝；除磷剂与磷酸盐的摩尔比为Al3+:P＝1.1。 The phosphorus removal agent is aluminum sulfate; the molar ratio of the phosphorus removal agent to phosphate is Al 3+ :P=1.1.
所述的待处理的剩余活性污泥中悬浮固体浓度为29000mg/L，含水率为97.1％，其中挥发性固体的含量为19.2g/L，处理完成后挥发性固体的含量为11.4g/L，浮上分离器内上浮浮渣的含水率约为95.6％，澄清液含磷酸盐4.0mg/L。 The concentration of suspended solids in the remaining activated sludge to be treated is 29000mg/L, the water content is 97.1%, the content of volatile solids is 19.2g/L, and the content of volatile solids after the treatment is 11.4g/L , The water content of the upper floating scum in the floating separator is about 95.6%, and the clarified liquid contains 4.0mg/L of phosphate.
实施例2 Example 2
一种剩余活性污泥的减量化处理装置，该装置包括高压生物反应器1和浮上分离器2，高压生物反应器1底部通过出样管3与浮上分离器2底部连通；浮上分离器2一侧下方设有澄清水排放管4；高压生物反应器1顶部设有排气主管5，排气主管5上设有排气支管6；高压生物反应器1由上至下依次设有进样管7、加药管8和曝气供气管9。 A reduction treatment device for excess activated sludge, the device includes a high-pressure bioreactor 1 and a floating separator 2, the bottom of the high-pressure bioreactor 1 communicates with the bottom of the floating separator 2 through a sample outlet pipe 3; the floating separator 2 A clarified water discharge pipe 4 is provided under one side; an exhaust main pipe 5 is provided on the top of the high-pressure bioreactor 1, and an exhaust branch pipe 6 is provided on the exhaust main pipe 5; the high-pressure bioreactor 1 is sequentially provided with sampling Pipe 7, dosing pipe 8 and aeration air supply pipe 9.
所述的排气主管5上设有10个排气支管6；所述的每个排气支管6上均设有电磁阀10和手动阀门11。 The exhaust main pipe 5 is provided with 10 exhaust branch pipes 6; each exhaust branch pipe 6 is provided with a solenoid valve 10 and a manual valve 11.
所述的高压生物反应器1顶部设有压力表12和可调压安全阀13。 The top of the high-pressure bioreactor 1 is provided with a pressure gauge 12 and an adjustable pressure safety valve 13 .
应用上述的装置进行剩余活性污泥的减量化处理的方法，其具体步骤为： Applying the above-mentioned device to carry out the method for the reduction treatment of excess activated sludge, its concrete steps are:
(1)将待处理的剩余活性污泥放入高压生物反应器1，开启曝气供气管9； (1) Put the remaining activated sludge to be treated into the high-pressure bioreactor 1, and open the aeration air supply pipe 9;
(2)调整排气支管6，在400s的时间内将高压生物反应器1内的压力均匀的由0上升至P，然后在400s的时间内将高压生物反应器1内的压力由P均匀下降为0，完成一个循环处理； (2) Adjust the exhaust branch pipe 6 to uniformly increase the pressure in the high-pressure bioreactor 1 from 0 to P within 400 s, and then uniformly decrease the pressure in the high-pressure bioreactor 1 from P within 400 s If it is 0, a loop processing is completed;
(3)按照步骤2所述的循环处理过程循环处理5天后，通过加药管8向高压生物反应器1内加入除磷剂，混合反应20min，然后将生物反应器1内部压力升至P时，将处理完的污泥通过出样管3排入浮上分离器2分离。 (3) After 5 days of circulation treatment according to the circulation treatment process described in step 2, add the dephosphorization agent into the high-pressure bioreactor 1 through the dosing pipe 8, mix and react for 20 minutes, and then raise the internal pressure of the bioreactor 1 to P , discharge the treated sludge into the floating separator 2 through the sample outlet pipe 3 for separation.
所述的曝气供气管1的供气量2.2L空气/h.L池容。 The air supply volume of the aeration air supply pipe 1 is 2.2L air/h.L pool capacity.
所述的压力P为12atm。 Said pressure P is 12 atm.
所述的除磷剂为氯化铁；除磷剂与磷酸盐的摩尔比为Fe3+:P＝1.1。 The phosphorus removal agent is ferric chloride; the molar ratio of the phosphorus removal agent to phosphate is Fe 3+ :P=1.1.
所述的待处理的剩余活性污泥中悬浮固体浓度为18000mg/L，含水率为98.2％，其中挥发性固体的含量为12.4g/L，处理完成后挥发性固体的含量为8.8g/L，浮上分离器内上浮浮渣的含水率约为95.0％，澄清液含磷酸盐4.8mg/L。 The concentration of suspended solids in the remaining activated sludge to be treated is 18000mg/L, the water content is 98.2%, the content of volatile solids is 12.4g/L, and the content of volatile solids after the treatment is 8.8g/L , The water content of the upper floating scum in the floating separator is about 95.0%, and the clarified liquid contains phosphate 4.8mg/L.
实施例3 Example 3
一种剩余活性污泥的减量化处理装置，该装置包括高压生物反应器1和浮上分离器2，高压生物反应器1底部通过出样管3与浮上分离器2底部连通；浮上分离器2一侧下方设有澄清水排放管4；高压生物反应器1顶部设有排气主管5，排气主管5上设有排气支管6；高压生物反应器1由上至下依次设有进样管7、加药管8和曝气供气管9。 A reduction treatment device for excess activated sludge, the device includes a high-pressure bioreactor 1 and a floating separator 2, the bottom of the high-pressure bioreactor 1 communicates with the bottom of the floating separator 2 through a sample outlet pipe 3; the floating separator 2 A clarified water discharge pipe 4 is provided under one side; an exhaust main pipe 5 is provided on the top of the high-pressure bioreactor 1, and an exhaust branch pipe 6 is provided on the exhaust main pipe 5; the high-pressure bioreactor 1 is sequentially provided with sampling Pipe 7, dosing pipe 8 and aeration air supply pipe 9.
所述的排气主管5上设有10个排气支管6；所述的每个排气支管6上均设有电磁阀10和手动阀门11。 The exhaust main pipe 5 is provided with 10 exhaust branch pipes 6; each exhaust branch pipe 6 is provided with a solenoid valve 10 and a manual valve 11.
所述的高压生物反应器1顶部设有压力表12和可调压安全阀13。 The top of the high-pressure bioreactor 1 is provided with a pressure gauge 12 and an adjustable pressure safety valve 13 .
应用上述的装置进行剩余活性污泥的减量化处理的方法，其具体步骤为： Applying the above-mentioned device to carry out the method for the reduction treatment of excess activated sludge, its concrete steps are:
(1)将待处理的剩余活性污泥放入高压生物反应器1，开启曝气供气管9； (1) Put the remaining activated sludge to be treated into the high-pressure bioreactor 1, and open the aeration air supply pipe 9;
(2)调整排气支管6，在300s的时间内将高压生物反应器1内的压力均匀的由0上升至P，然后在300s的时间内将高压生物反应器1内的压力由P均匀下降为0，完成一个循环处理； (2) Adjust the exhaust branch pipe 6 to uniformly increase the pressure in the high-pressure bioreactor 1 from 0 to P within 300 s, and then uniformly decrease the pressure in the high-pressure bioreactor 1 from P within 300 s If it is 0, a loop processing is completed;
(3)按照步骤2所述的循环处理过程循环处理4天后，通过加药管8向高压生物反应器1内加入除磷剂，混合反应30min，然后将生物反应器1内部压力升至P时，将处理完的污泥通过出样管3排入浮上分离器2分离。 (3) After circulating for 4 days according to the circulating treatment process described in step 2, add the dephosphorization agent into the high-pressure bioreactor 1 through the dosing pipe 8, mix and react for 30 minutes, and then raise the internal pressure of the bioreactor 1 to P , discharge the treated sludge into the floating separator 2 through the sample outlet pipe 3 for separation.
所述的曝气供气管1的供气量1.5L空气/h.L池容。 The air supply volume of the aeration air supply pipe 1 is 1.5L air/h.L pool capacity.
所述的压力P为5atm。 Said pressure P is 5 atm.
所述的除磷剂为氯化铁；除磷剂与磷酸盐的摩尔比为Fe3+:P＝1.1。 The phosphorus removal agent is ferric chloride; the molar ratio of the phosphorus removal agent to phosphate is Fe 3+ :P=1.1.
所述的待处理的剩余活性污泥中悬浮固体浓度为8500mg/L，含水率为99.1％，其中挥发性固体的含量为6.3g/L，处理完成后挥发性固体的含量为3.6g/L，浮上分离器内上浮浮渣的含水率约为96％，澄清液含磷酸盐3.8mg/L。 The concentration of suspended solids in the remaining activated sludge to be treated is 8500mg/L, the water content is 99.1%, the content of volatile solids is 6.3g/L, and the content of volatile solids after the treatment is 3.6g/L , The water content of the upper floating scum in the floating separator is about 96%, and the clarified liquid contains 3.8mg/L of phosphate.
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