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公开(公告)号:KR1020010076663A
公开(公告)日:2001-08-16
申请号:KR1020000003942
申请日:2000-01-27
Applicant: 한국과학기술연구원
IPC: C02F1/52
Abstract: PURPOSE: A treatment method of wastewater discharged during melamine preparing process is provided to facilitate design and engineering of wastewater treatment system and improve economical efficiency by using inexpensive additives and generating few byproducts. CONSTITUTION: Ammonia is removed from wastewater by aeration under an alkaline condition. Organic pollutants in the wastewater are coagulated by using aluminum sulfate cohesive agent under an acidic condition. Then, the organic pollutants are settled. For the aluminum sulfate cohesive agent, aluminum sulfate, alum or mixture thereof can be used. The treated wastewater may be neutralized using caustic lime.
Abstract translation: 目的:提供三聚氰胺制备过程中排放废水的处理方法,方便废水处理系统的设计和工程,通过使用廉价的添加剂和少量副产物提高经济效益。 规定:在碱性条件下通过曝气将氨从废水中除去。 废水中的有机污染物在酸性条件下通过使用硫酸铝粘合剂凝结。 然后,有机污染物定居。 对于硫酸铝粘结剂,可以使用硫酸铝,明矾或其混合物。 经处理的废水可用苛性石灰中和。
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公开(公告)号:KR1019960003805B1
公开(公告)日:1996-03-22
申请号:KR1019930024911
申请日:1993-11-22
Applicant: 한국과학기술연구원
IPC: C05G3/00
Abstract: The long-lasting pesticide fertilizer is prepared by coating more than one layers of the fertilizer granule, which consists of a single layer or multiple layers of fertilizer and pesticide, with basic coating agent by 1-40wt% with respect to the uttermost inner layer. The basic coating agent is obtained by dissolving 0.5-50wt% rosin in a solvent. Additionally the coating agent involves less than 70wt% rosin derivative , less than 20wt% polymeric substance or both of them.
Abstract translation: 长效农药肥料是由单层或多层肥料和农药组成的多层肥料颗粒,相对于最内层含有1-40%重量的基础涂层剂制成的。 通过将0.5〜50重量%的松香溶解在溶剂中得到基础涂料。 另外,涂层剂涉及小于70重量%的松香衍生物,小于20重量%的聚合物质或它们两者。
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公开(公告)号:KR1019930012646A
公开(公告)日:1993-07-21
申请号:KR1019910022161
申请日:1991-12-04
Applicant: 한국과학기술연구원
IPC: C05D9/00
Abstract: 로진올 주성분으로 하고 이에 첨가제로 비수용성 금속화합물과 고분자 물질을 혼합 또는 반응시켜 만든 피목물질을 유기용매에 용해시켜 비료입자에 분사하는 지효성 입상비료의 제조방법으로, 간단한 단일피복공정으로 물에 녹지아니하고 매끄럽고 균열이 되지 않는 피막을 제공하며, 비료성분이 용출된후 쉽게 부서지며 토양중ㅇ에서 쉽게 분해되는 특성을 지닌다.
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