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    • 3. 发明申请
    • POLYMERIC MATERIAL FOR WATER TREATMENT, CATION-EXCHANGE RESIN, AND ANION-EXCHANGE RESIN
    • 水处理聚合物,交联树脂和阴离子交换树脂
    • WO1998022217A1
    • 1998-05-28
    • PCT/JP1997004189
    • 1997-11-18
    • KURITA WATER INDUSTRIES LTD.WAKITA, Masa-akiYAMAGUCHI, MasatoADACHI, TsuneyasuUENO, Toshihiro
    • KURITA WATER INDUSTRIES LTD.
    • B01J39/18
    • B01J41/14B01J39/20
    • A polymeric material which has such a high resistance to oxidative decomposition that it is less apt to suffer the performance decrease caused by oxidative deterioration and to cause water pollution by oxidative decomposition products during its use, and which is usable for water treatment as a coagulant, dehydrant, dispersant, film, etc.; a cation-exchange resin which has an excellent resistance to oxidative decomposition and is reduced in the elution of resin components during use; and an anion-exchange resin which has an excellent resistance to oxidative decomposition and is reduced in the elution of resin components during use. The polymeric material is characterized by having groups which have an antioxidant function and have been covalently bonded. The cation-exchange resin is characterized in that the groups having an antioxidant function have been covalently bonded through sulfonamide bonds represented by the general formula (1): -SO2NR -. The anion-exchange resin is characterized in that the groups having an antioxidant function have been covalently bonded through iminoalkylene bonds represented by the general formula (2): -(CH2)nNR -. In the formulae, R and R each represents hydrogen or methyl and n is an integer of 1 to 4.
    • 对氧化分解具有如此高的抗氧化分解性的聚合材料,其不易遭受由氧化劣化引起的性能下降,并且在使用时由于氧化分解产物而引起水分污染,并且可用于作为凝结剂的水处理, 脱水剂,分散剂,薄膜等; 阳离子交换树脂,其具有优异的抗氧化分解能力,并且在使用过程中树脂组分的洗脱减少; 以及阴离子交换树脂,其具有优异的抗氧化分解性,并且在使用过程中树脂组分的洗脱减少。 聚合物材料的特征在于具有抗氧化功能并共价键合的基团。 阳离子交换树脂的特征在于具有抗氧化功能的基团通过由通式(1)表示的磺酰胺键共价连接:-SO 2 NR 1 - 。 阴离子交换树脂的特征在于具有抗氧化功能的基团通过由通式(2)表示的亚氨基亚烷基键共价连接: - (CH 2)n NR 2 - 。 式中,R 1和R 2各自表示氢或甲基,n表示1〜4的整数。
    • 7. 发明申请
    • METHOD AND APPARATUS FOR BIOLOGICAL TREATMENT OF WASTE ORGANIC LIQUID
    • 废物有机液生物处理方法与装置
    • WO1998003437A1
    • 1998-01-29
    • PCT/JP1996002025
    • 1996-07-19
    • KURITA WATER INDUSTRIES LTD.YASUI, Hidenari
    • KURITA WATER INDUSTRIES LTD.
    • C02F09/00
    • C02F3/1221C02F1/78C02F3/006C02F2209/42Y02W10/15
    • A method of reducing the volume of surplus sludge by aerobically treating waste organic liquid in an aeration tank in the presence of biological sludge containing aerobic microbes, subjecting the resultant liquid mixture to solid-liquid separation, discharging the separated liquid as the treated liquid, ozonizing part of the liquid mixture or the separated sludge in the aeration tank, and feeding the mixture or the sludge thus treated into the aeration tank, in which method a mixture of an ozone-containing liquid and a liquid containing either the treated sludge or the ozonized sludge is flowed down through a downcomer and introduced into an ozonizer in a state in which an ozone-containing gas is dispersed as fine bubbles in the sludge-containing liquid to effect ozonization. This method serves to prevent the clogging of the apparatus caused by the adhesion of the sludge and permits the ozonization at a high ozone absorption rate.
    • 一种通过在含有需氧微生物的生物污泥的存在下对曝气池中的废有机液体进行有氧处理来减少剩余污泥的体积的方法,使得到的液体混合物进行固液分离,排出作为处理液体的分离液体,臭氧化 液体混合物的一部分或曝气池中分离的污泥,并将经过处理的混合物或污泥进料到曝气池中,以这种方式将含臭氧液体和含有处理过的污泥或臭氧化的液体的液体 污泥通过降液管流下并引入臭氧发生器中,其中含臭氧气体作为细小气泡分散在含污泥的液体中以实现臭氧化。 该方法用于防止污泥粘附引起的装置堵塞,并且可以以高臭氧吸收速率进行臭氧化。
    • 8. 发明申请
    • SLUDGE DEHYDRATING AGENT
    • 污泥脱水剂
    • WO1994001370A1
    • 1994-01-20
    • PCT/JP1993000904
    • 1993-06-30
    • KURITA WATER INDUSTRIES LTD.SANYO CHEMICAL INDUSTRIES LTD.SATO, ShigeruOHSHIMIZU, HisaoKAWAGUCHI, Shinobu
    • KURITA WATER INDUSTRIES LTD.SANYO CHEMICAL INDUSTRIES LTD.
    • C02F11/14
    • C02F11/14B01D21/01B01D21/245C02F11/12
    • A sludge dehydrating agent which is excellent in storage stability and prevented from becoming water-insoluble during storage and hence can be distributed in the market securely by solving the problem of the conventional dehydrating agents comprising amphoteric polymers that they undergo deterioration and become water-insoluble when stored for long, thus becoming substantially unusable. This dehydrating agent comprises a copolymer composed of cationic vinyl monomer units, vinylic carboxylic acid monomer units and nonionic vinyl monomer units and a salt of a group IIA metal of the periodic table. Preferable examples of the vinylic carboxylic acid monomer include acrylic, methacrylic and crotonic acids, while those of the nonionic vinyl monomer include acrylamide and methacrylamide. The metal salts usable herein include those of mineral acids and organic carboxylic acids, and preferable mineral acid salts include calcium chloride, magnesium chloride and magnesium sulfate. Preferably, the amount of the cationic vinyl monomer ranges from 10 to 60 mole %, while that of the vinylic carboxylic acid monomer from 10 to 45 mole %. Preferably, the molar ratio of the cationic vinyl monomer to the vinylic carboxylic acid monomer ranges from 0.3 to 3.0, while that of the metal salt to the carboxylic acid monomer from 0.2 to 2.0. The dehydrating agent may further contain an inorganic coagulant.
    • 一种污泥脱水剂,其储存稳定性优异,并且在贮存期间防止变得不溶于水,因此可以通过解决常规脱水剂的问题来解决常规脱水剂的问题,所述两性聚合物经历劣化并变成水不溶性的问题 存储很长时间,因此变得基本上不可用。 该脱水剂包括由阳离子乙烯基单体单元,乙烯基羧酸单体单元和非离子乙烯基单体单元以及周期表的IIA族金属的盐组成的共聚物。 乙烯基羧酸单体的优选实例包括丙烯酸,甲基丙烯酸和巴豆酸,而非离子乙烯基单体的优选实例包括丙烯酰胺和甲基丙烯酰胺。 可用的金属盐包括无机酸和有机羧酸的金属盐,优选的无机酸盐包括氯化钙,氯化镁和硫酸镁。 优选地,阳离子乙烯基单体的量为10至60摩尔%,而乙烯基羧酸单体的量为10至45摩尔%。 优选地,阳离子乙烯基单体与乙烯基羧酸单体的摩尔比为0.3-3.0,而金属盐对羧酸单体的摩尔比为0.2-2.0。 脱水剂还可以含有无机凝结剂。