CN115608317A - 一种蜂窝状pdms整体式复合填料及其制备方法 - Google Patents
一种蜂窝状pdms整体式复合填料及其制备方法 Download PDFInfo
- Publication number
- CN115608317A CN115608317A CN202211270574.1A CN202211270574A CN115608317A CN 115608317 A CN115608317 A CN 115608317A CN 202211270574 A CN202211270574 A CN 202211270574A CN 115608317 A CN115608317 A CN 115608317A
- Authority
- CN
- China
- Prior art keywords
- pdms
- carrier
- honeycomb
- filler
- coating liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000004205 dimethyl polysiloxane Substances 0.000 title claims abstract description 59
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 title claims abstract description 59
- 239000000945 filler Substances 0.000 title claims abstract description 50
- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 235000013870 dimethyl polysiloxane Nutrition 0.000 title claims abstract 20
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 title claims abstract 20
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 title claims abstract 20
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- 238000000576 coating method Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000012855 volatile organic compound Substances 0.000 claims abstract description 12
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 8
- 230000001413 cellular effect Effects 0.000 claims abstract description 6
- 230000000593 degrading effect Effects 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 21
- 239000011148 porous material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000004848 polyfunctional curative Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000000969 carrier Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000009998 heat setting Methods 0.000 claims 1
- 239000004743 Polypropylene Substances 0.000 abstract description 23
- 229920001155 polypropylene Polymers 0.000 abstract description 20
- -1 polypropylene Polymers 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 2
- 239000002912 waste gas Substances 0.000 abstract description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 10
- 241000894006 Bacteria Species 0.000 description 6
- 230000032770 biofilm formation Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010016807 Fluid retention Diseases 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 241000192142 Proteobacteria Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
- B01D53/85—Biological processes with gas-solid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32296—Honeycombs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/324—Composition or microstructure of the elements
- B01J2219/32483—Plastics
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
一种蜂窝状PDMS整体式复合填料及其制备方法，属于废气处理领域，本发明包括PDMS主剂和硬化剂、蜂窝状PP填料载体、涂覆工艺。将PDMS主剂与硬化剂按照一定比例混合后，采用特制装置将其涂覆于蜂窝状PP载体上，涂覆后PP载体在烘箱内加热成型，待静置恢复室温，即得蜂窝状PDMS整体式复合聚丙烯填料。经PDMS涂覆的蜂窝状PP填料，具有较好的生物亲和力，并有一定的疏水性，适合作为生物滴滤塔的整体式填料，用于降解疏水性挥发性有机化合物。实现了生物滴滤塔内填料无序向有序的优化，同时对于降低生物滴滤塔一次性投资和运行维护成本有重要意义。
Description
技术领域
本发明涉及一种蜂窝状PDMS整体式复合填料及其制备方法，属于废气处理领域。
背景技术
生物滴滤塔工艺由于具有成本低、对环境友好等优点，在中低浓度VOCs末端治理技术中受到广泛关注。常用的生物滴滤塔填料主要包括陶粒、鲍尔环、拉西环、硅藻土、聚氨酯海绵、珍珠岩等。这些填料在实际使用过程中可能会由于吸收液体而出现局部形变或因长期受力而出现碎裂等现象，增加了生物滴滤塔的运行维护费用。同时这些填料在运行一段时间后容易出现孔道堵塞等问题，成为生物滴滤塔工程应用中亟待解决的问题之一。
针对上述问题，本发明通过制备整体式复合填料来降低生物滴滤塔填料的持水性并提高其生物亲和力，从而改善填料发生变形的状况，同时缩短其在生物滴滤塔启动初期的挂膜周期，对解决传统填料中的堵塞问题具有重要作用。
PP蜂窝状载体具有密度小，质量轻的优点，同时具有一定的机械强度，具有规则孔道结构，能够明显改善传统填料的易堵塞问题。同时，PDMS，又称聚二甲基硅氧烷，无毒无味，其因具有生理惰性、良好的化学稳定性，生物亲和性，多用于防潮绝缘，阻尼，减震，消泡，润滑，抛光等方面。本发明制备的PDMS蜂窝状PP整体式填料利用PDMS的生物亲和性和粗糙度促进微生物在整体式填料表面的截留和生长，对缩短生物滴滤塔的挂膜周期具有重要的意义。
发明内容
针对上述问题，本发明提供了一种可用于生物滴滤塔处理疏水性VOCs的新型蜂窝状整体式复合填料，其具有规则的孔道结构，挂膜迅速，对减轻传统散堆填料易堵塞问题有一定的改善作用。
本发明是通过以下技术方案实现的：
一种蜂窝状PDMS整体式复合填料及其制备方法，包括以下步骤：
a.将PDMS主剂与硬化剂按照比例混合，充分搅拌均匀，备用，得到PDMS涂覆液；
b.将蜂窝状PP载体切割成所需形状，放入盛有PDMS涂覆液的容器中，翻转载体，使PDMS涂覆液覆盖所有载体表面；
c.将浸渍PDMS涂覆液后的PP载体取出蜂窝孔中心轴竖直地放在托盘中静置，在重力作用下去除载体表面多余的PDMS涂覆液；
d.静置后PP载体放入密封的抽真空装置内，对抽真空装置进行抽真空进而相当于对PP载体表面进行抽真空操作，去除涂覆液及PP载体之间的气泡；
e.将抽真空后的PP载体放入烘箱内加热使其固化，成型后取出，待静置至室温，即得蜂窝状PDMS整体式复合填料。
优选地，步骤a中，PDMS主剂与硬化剂的体积比为10：1.
优选地，步骤b中，蜂窝状载体材质为PP材料，该材料经过测试，在60℃以上的温度下易产生变形，因而PDMS复合材料加热定型温度建议低于60℃。
优选地，步骤c中，静置时应间隔5min翻转载体，防止PDMS涂覆液在底部粘连。
优选地，步骤d中，抽真空真空度为-0.09MPa，抽真空次数为4次。
优选地，步骤e中，烘箱温度为40-50℃。
优选地，步骤e中所得的蜂窝状PDMS整体式填料内孔横截面为内接圆为8mm的正六边形，高度为9cm，PDMS涂层厚度约为0.1mm。
将所得的蜂窝状PDMS整体式填料可直接用于生物滴滤装置，进一步可用于甲苯的去除。
本发明将PDMS主剂与硬化剂按照一定比例混合后，采用特制装置将其涂覆于蜂窝状PP载体上，涂覆后PP载体在烘箱内加热成型，待静置恢复室温，即得蜂窝状PDMS整体式复合聚丙烯(polypropylene,PP)填料。经PDMS涂覆的蜂窝状PP填料，具有较好的生物亲和力，并有一定的疏水性，适合作为生物滴滤塔的整体式填料，用于降解疏水性挥发性有机化合物(volatile organic compounds,VOCs)。实现了生物滴滤塔内填料无序向有序的优化，同时对于降低生物滴滤塔一次性投资和运行维护成本有重要意义。
与现有技术相比，本发明具有以下优点：
1.本发明涂覆制作过程简单，可快速大规模量产；
2.本发明制作的新型复合填料形状可根据反应器结构灵活变化，可用于不同结构的反应器。
3.本发明制作的新型复合填料具有规则的孔道形状和生物亲和性，实现了生物滴滤塔填料从无序向有序的发展，较适合于疏水性VOCs的生物降解过程；
4.本发明制作的新型复合填料能够明显改善多孔填料易堵塞的问题，同时使用后不易变形，压损较低，可有效降低成本和改善生物滴滤塔在长期运行过程中出现的堵塞问题。
附图说明
图1为发明制得的蜂窝状PDMS整体式复合填料；(a)俯视图(b)正视图
图2为蜂窝状PDMS整体式复合填料挂膜启动与运行性能。
具体实施方式
为使本领域技术人员充分理解本发明的技术方案和有益效果，以下结合附图及具体实施例进一步说明，此处案例仅用于解释本发明，并不用于限定本发明。
实施例1：
以实验室制备的蜂窝状PDMS填料为载体，挂膜启动一台生物滴滤塔，处理疏水性VOCs——甲苯为例，其中PDMS主剂与硬化剂为道康宁DC184PDMS聚二甲基硅氧烷硅橡胶SYLGARD。
实施方法如下：
a.将PDMS主剂与硬化剂按照10:1的比例混合，充分搅拌均匀以备用。
b.将蜂窝状载体切割成所需形状(此实例中为圆柱形)，蜂窝结构横截面为内接圆直径8mm的正六边形，壁厚为1mm,所切割圆柱直径为6.4cm,高度为9cm,放入盛有PDMS涂覆液的容器，上下翻转载体，使PDMS涂覆液覆盖所有载体表面；
c.将浸渍PDMS涂覆液后的PP蜂窝状载体放在托盘中静置，在重力作用下去除载体表面多余的PDMS涂覆液；
d.静置后载体放入特制抽真空装置内，对载体表面进行抽真空操作，去除涂覆液及载体之间的气泡；
e.将抽真空后的PP载体放入烘箱内加热使其固化，成型后取出，待静置至室温，即得蜂窝状PDMS整体式复合填料，如图1所示。
主剂与硬化剂的体积比为10:1。
将所得的蜂窝状PDMS整体式填料可直接用于生物滴滤装置。
将上述填料装填入生物滴滤塔内(所述的蜂窝状PDMS填料竖直放置，共4块，上层2块，下层2块)，以疏水性VOCs甲苯为目标污染物，气体停留时间为50s，挂膜启动一台立式生物滴滤塔，监测挂膜启动性能及压损变化。
图2为装填有蜂窝状PDMS填料的生物滴滤塔挂膜启动性能图。由图可知，挂膜启动期间生物滴滤塔压损几乎为0。该生物滴滤塔在第6天入口甲苯浓度为800mg/m3时，去除效率即达到60％以上。在第11天之后，去除效率基本维持在80％以上，表明系统在11天后挂膜成功。挂膜期间采用细菌(以变形菌门为主)和真菌(以子囊菌门为主)混合菌液挂膜，所用混合菌液浓度为200mg/L，共用菌液体积为150ml，比同体积其他填料节约一半左右，表明本发明制作的PDMS整体式复合填料具有较好的生物亲和力。同时，该塔运行期间压损较低，可一定程度上降低运行成本。同时，运行效率表明该PDMS填料结合优势降解菌对疏水性VOCs——甲苯具有较好的降解效率。
本发明并不局限于上述具体实施方式，在所述技术领域普通技术人员所具备的知识范围内，还可以在不脱离本发明原理和宗旨的前提下做出各种修改。这些都不是具有创造性的修改，只要在本发明的权利要求范围内都受到专利法的保护。
Claims (10)
1.一种蜂窝状PDMS整体式复合填料的制备方法，其特征在于，包括以下步骤：
a.将PDMS主剂与硬化剂按照比例混合，充分搅拌均匀，备用，得到PDMS涂覆液；
b.将蜂窝状PP载体切割成所需形状，放入盛有PDMS涂覆液的容器中，翻转载体，使PDMS涂覆液覆盖所有载体表面；
c.将浸渍PDMS涂覆液后的PP载体取出蜂窝孔中心轴竖直地放在托盘中静置，在重力作用下去除载体表面多余的PDMS涂覆液；
d.静置后PP载体放入密封的抽真空装置内，对抽真空装置进行抽真空进而相当于对PP载体表面进行抽真空操作，去除涂覆液及PP载体之间的气泡；
e.将抽真空后的PP载体放入烘箱内加热使其固化，成型后取出，待静置至室温，即得蜂窝状PDMS整体式复合填料。
2.按照权利要求1所述的方法，其特征在于，步骤a中，PDMS主剂与硬化剂的体积比为10：1。
3.按照权利要求1所述的方法，其特征在于，步骤b中，蜂窝状载体材质为PP材料，在60℃以上的温度下易产生变形，因而PDMS复合材料加热定型温度建议低于60℃。
4.按照权利要求1所述的方法，其特征在于，步骤c中，静置时应间隔5min翻转载体，防止PDMS涂覆液在底部粘连。
5.按照权利要求1所述的方法，其特征在于，步骤d中，抽真空真空度为-0.09MPa，抽真空次数为4次。
6.按照权利要求1所述的方法，其特征在于，步骤e中，烘箱温度为40-50℃。
7.按照权利要求1所述的方法，其特征在于，步骤e中所得的蜂窝状PDMS整体式填料内孔横截面为内接圆为8mm的正六边形，高度为9cm，PDMS涂层厚度约为0.1mm。
8.按照权利要求1-7任一项所述的方法制备得到的蜂窝状PDMS整体式复合填料。
9.按照权利要求1-7任一项所述的方法制备得到的蜂窝状PDMS整体式复合填料的应用，直接用于生物滴滤装置。
10.按照权利要求9的应用，用于降解疏水性挥发性有机化合物。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211270574.1A CN115608317A (zh) | 2022-10-17 | 2022-10-17 | 一种蜂窝状pdms整体式复合填料及其制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211270574.1A CN115608317A (zh) | 2022-10-17 | 2022-10-17 | 一种蜂窝状pdms整体式复合填料及其制备方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115608317A true CN115608317A (zh) | 2023-01-17 |
Family
ID=84862411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211270574.1A Withdrawn CN115608317A (zh) | 2022-10-17 | 2022-10-17 | 一种蜂窝状pdms整体式复合填料及其制备方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115608317A (zh) |
-
2022
- 2022-10-17 CN CN202211270574.1A patent/CN115608317A/zh not_active Withdrawn
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2004261745B2 (en) | Cell cultivation and breeding method | |
| CA1096976A (en) | Process and apparatus for waste water treatment | |
| US5981272A (en) | Composite medium for attaching and growing microorganisms | |
| CN115608317A (zh) | 一种蜂窝状pdms整体式复合填料及其制备方法 | |
| US3929630A (en) | Process for biochemical reactions | |
| SE452854B (sv) | Fluidumpermeabel fibermatris samt sett for dess framstellning | |
| CN110917865B (zh) | 一种pdms板状填料及其制备方法 | |
| CN110694462A (zh) | 一种pdms与泡沫陶瓷复合填料及其制备方法 | |
| CN105854840B (zh) | 一种生物滴滤池用滤料改性方法 | |
| CN108479376B (zh) | 以聚氨酯泡沫材料为载体固定硫杆菌的方法 | |
| KR101279579B1 (ko) | 하폐수악취제거용 다공성 소결골재 제조방법 및 그 다공성 소결골재 | |
| US4690760A (en) | Novel cartridge with stress relieving member | |
| EP2412680A1 (en) | improved biological reactor of the fixed biomass type | |
| CN114247417A (zh) | 一种防压实丝瓜络复合填料及其制备方法和应用 | |
| KR101928628B1 (ko) | 다공성 유동상 여재 및 이의 제조방법 | |
| TW201412978A (zh) | 生物反應膜及其製造方法與用途 | |
| CN113428974B (zh) | 一种膜生物反应器和一种减缓膜生物反应器膜污染的方法 | |
| KR20010028619A (ko) | 오/폐수 처리 및 악취제거용 중공볼 형태의 유동상 미생물 담체 제조방법 | |
| CN215491250U (zh) | 一种氢氧化镁制备用余热回收装置 | |
| JP2009532062A5 (zh) | ||
| CN216038828U (zh) | 一种减缓膜污染的mbr污水处理装置 | |
| CN114314827B (zh) | 植物纤维介子经济型高效反硝化生物床反应器及其方法 | |
| KR20180118985A (ko) | 세라믹 담체의 탈취기술 성능개선 방법 | |
| CN114425246B (zh) | 离子液体支撑复合膜及其制备方法与应用 | |
| JPS6221769A (ja) | 多孔質磁器構造体の製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20230117 |
|
| WW01 | Invention patent application withdrawn after publication |