摘要
将８０ 目信阳上天梯斜发沸石岩经水润湿后，与水解后能形成多核、多羟基、带高正电的铝盐、铁盐按一定比例混合，同时加入适量的反应助剂充分搅拌；然后将混合物的ｐＨ 值调至４ ～５ 并陈化数小时；最后将混合物在２００ ～２５０ ℃的温度下烧结制成“沸石净化剂”。用该净化剂处理ｐＨ≈９ 、ＣＯＤｃｒ ＜ ３ ５００ ｍｇ／Ｌ的草浆型造纸终端废水，若重量比为１∶９００ ，则可使ＣＯＤｃｒ 降低到４５０ ～９６０ ｍｇ／Ｌ，达到国家造纸行业２ ～３ 级排放标准。试验证明，沸石净化剂有一定的应用前景。
The papermaking waste water ofstraw_pulp typeisthe mostseriouscontaminate to envi ronmentandindustrial water pollute difficultto handle. Using purificant made by zeolitefrom Shangtiantiof Xinyang,theauthorstreated papermaking waste waterand got good result.The experience obtained provides a new idea for purifying papermaking waste water.The prepara tion of purificantis carried outin accordance with thefollowing process:dip the 80 mesh zeo lite_powderinto water;after bringing about hydrolysis,the aluminate andferrite with polynu clear,polyhydroxy and high electropositivity can beformed and are mixedin a certain propor tion .Atthesametime,add moderateamountsofassistantpreparation ofreaction and fully stir them . Then this mixed substanceis putinto a tank with temperature 200 ～250 ℃,and reacts chemically for a certain time to form sintered blocks. Finally ,grind theloose sintered blocks untilthey become 80 mesh size,forming zeolite purificant. This purificant is nonpoisonous, scentless,stablechemically ,andits preparation techniqueissimple,withoutletting taildregs. Atthe proportion of 1∶900 this purificantis used to treattheterminal waste water ofthe Maping Papermaking Works, Hubei,according to thefollowing technological process:cut off theterminal waste water→add purificant→stir→form cotton_like coagulate→precipitate→drain offthe upper clear water→further precipitate→filter with pressure→retrievefiltered dregs.In the smalltestthe processcan reduce CODcr of waste waterfrom 3500 mg/Lto about450 mg/ L;in thelargetestit can also reduce CODcrto 890 ～960 mg/L. Therefore,the technological process hasreached the 2nd or 3rd Grade of the State Industrial Letting Criteria (GB3544_ 92) .The same effect has been realizedin using the purificanttotreattheterminal waste water ofthe following papermaking words: Hannan in Wuhan ,Jingzhou and Yunxian in Hubei, Xinyangin Henan ,and Mupingin Shandong.These testsshow thatthe zeolite purificant has good prospects in treating waste wat
出处
《岩石矿物学杂志》
CAS
CSCD
北大核心
1999年第4期335-339,共5页
Acta Petrologica et Mineralogica
基金
国家自然科学基金!重点项目( 编号:49832005)
原地质矿产部非金属应用项目!(编号94 - 07)
关键词
沸石净化剂
造纸废水
废水
处理
应用试验
zeolite purificant
preparation
treat
papermaking waste water
