CN108523104A - 一种糯米粉加工污水沉淀物处理回收方法 - Google Patents
一种糯米粉加工污水沉淀物处理回收方法 Download PDFInfo
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- A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
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Abstract
本发明公开了一种糯米粉加工污水沉淀物处理回收方法,涉及糯米粉加工中污水处理技术领域,糯米粉加工污水沉淀物处理回收方法经过静置沉淀、加酸除尘、弱碱树脂柱酸碱中和、沉淀物晾晒粉粹、山泉水浸泡去色素、粗淀粉冷冻、冻干粉烘干;本发明糯米粉加工污水沉淀物处理回收方法,通过工艺去除污水中的杂质,对沉淀物进行加工处理,对水源进行净化,本发明方法具有方法简单,成本低廉等优点,资源利用率高,得到的淀粉可用于医药、食品、饲料等领域,提高了企业的附加值,同时也解决了污染问题,保护了环境。
Description
技术领域:
本发明涉及糯米粉加工中污水处理技术领域,具体涉及一种糯米粉加工污水沉淀物处理回收方法。
背景技术:
糯米浸泡一夜,水磨打成浆水,用个布袋装着吊一个晚上,待水滴干了,把湿的糯米粉团掰碎晾干后就是成品的糯米粉,当然,在超市也能买到现成的。它可以制作汤团(即元宵)之类食品和家庭小吃,以独特的风味闻名。
澄粉其实就是面粉去掉了面筋提取出来。所谓澄粉(澄面)又称小麦澄面,是用面粉加工洗去面筋,然后将洗过面筋的水粉再经过沉淀,滤干水分,再把沉淀的粉晒干后研细的粉料。
在糯米粉制备和加工过程中,使用大量水进行加工,且产生大量加工污水沉淀物,糯米粉或糯米淀粉在生产过程中首先都需要进行浸泡,以住工艺中浸泡水都是直接排放到环保站进行处理,近年来,有些公司为了利用浸泡水中的营养物质,改进了浸泡方法,采用一次加水清洗、浸泡后,把水放干,即进入下道工序,省去了反复换水浸泡的过滤。这样,显然是提高了水解糖液中的生物素和其他营养物的含量,丰富了培养基的营养成份,把它用于谷氨酸发酵,使培养基中的生物素用量比原来下降40%,玉米浆由原来的5%减少到3%,磷酸盐的用量也可适当降低,减少了辅助材料的消耗,同时还有利于谷氨酸产酸率的稳定。但是此工艺仍旧会产生部份浸泡水需要送至环保站进行处理。
发明内容:
本发明开发一种糯米粉加工污水沉淀物处理回收方法,通过工艺去除污水中的杂质,对沉淀物进行加工处理,对水源进行净化。
本发明所要解决的技术问题采用以下技术方案来实现:
一种糯米粉加工污水沉淀物处理回收方法,处理方法如下:
(1)收集糯米粉加工污水,集中回收进入存储池,存储池下方设置有加热系统,存储池温度控制在30-45℃,将回收污水存储在池中静置2-4h,后将上清液通过连接管道导入下一级存储池中,并收集此存储池中沉淀物;
(2)将步骤1收集沉淀物加入稀酸后调节pH为5-6,加热至70-80℃后搅拌40-60min,静置分层后去除上层上清液,并收集调酸搅拌静置后的沉淀物;
(3)将步骤2处理后的沉淀物加水稀释至含酸量为0.03-0.045wt%,再预热至30-60℃,通过D201大孔弱碱性阴离子弱碱树脂柱进行酸碱中和,流速为3.5-4.7mL/min,进行除酸处理;
(4)将步骤3得到的除酸处理物预热至30-40℃后,加入清水搅拌30-60min后静置,过滤,得滤清液和沉淀物;
(5)将收集后的沉淀物放置太阳下晾晒,至水分含量在15%以内待用;
(6)将晒干后的沉淀物放入粉碎机粉碎,然后过200目筛,得粉料待用;
(7)将粉料放入山泉水中浸泡12-24小时,去除色素,撇去上清液,得粗淀粉待用;
(8)将粗淀粉放在冷冻设备中,在-10℃的温度下冷冻4~5小时,得到冻干粉待用;
(9)将冻干粉放入烘干机中,在120℃温度下旋转烘烤30-90秒,取出烘烤后的淀粉自然冷却,杀菌即可完成处理。
所述烘干机旋转速度为200-500rpm/min。
优选地,步骤2中,所述稀酸为浓度2-3wt%的硝酸溶液。
优选地,步骤3中,进行离子交换处理前,还包括对D201大孔弱碱性阴离子弱碱树脂柱进行活化处理,具体包括:将D201大孔弱碱性阴离子弱碱树脂柱先采用1-2倍树脂体积的HCl溶液,HCl溶液的浓度为1-2wt%,以3-5m/h的线速度通过树脂柱,再用软水以8-10m/h的线速度通过树脂柱;接着采用2-3倍树脂体积的CH3COONa溶液,CH3COONa溶液为3-5wt%,以1-2m/h的线速度通过树脂柱,再用软水以10-12m/h的线速度通过树脂柱。
本发明的有益效果是:本发明糯米粉加工污水沉淀物处理回收方法,通过工艺去除污水中的杂质,对沉淀物进行加工处理,对水源进行净化,本发明方法具有方法简单,成本低廉等优点,资源利用率高,得到的淀粉可用于医药、食品、饲料等领域,提高了企业的附加值,同时也解决了污染问题,保护了环境。
具体实施方式:
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施例,进一步阐述本发明。
实施例1:
一种糯米粉加工污水沉淀物处理回收方法,处理方法如下:
(1)收集糯米粉加工污水,集中回收进入存储池,存储池下方设置有加热系统,存储池温度控制在45℃,将回收污水存储在池中静置4h,后将上清液通过连接管道导入下一级存储池中,并收集此存储池中沉淀物;
(2)将步骤1收集沉淀物加入稀酸后调节pH为6,加热至80℃后搅拌40min,静置分层后去除上层上清液,并收集调酸搅拌静置后的沉淀物;
(3)将步骤2处理后的沉淀物加水稀释至含酸量为0.03wt%,再预热至30℃,通过D201大孔弱碱性阴离子弱碱树脂柱进行酸碱中和,流速为3.5mL/min,进行除酸处理;
(4)将步骤3得到的除酸处理物预热至40℃后,加入清水搅拌30min后静置,过滤,得滤清液和沉淀物;
(5)将收集后的沉淀物放置太阳下晾晒,至水分含量在15%以内待用;
(6)将晒干后的沉淀物放入粉碎机粉碎,然后过200目筛,得粉料待用;
(7)将粉料放入山泉水中浸泡12小时,去除色素,撇去上清液,得粗淀粉待用;
(8)将粗淀粉放在冷冻设备中,在-10℃的温度下冷冻4小时,得到冻干粉待用;
(9)将冻干粉放入烘干机中,在120℃温度下旋转烘烤60秒,取出烘烤后的淀粉自然冷却,杀菌即可完成处理。
所述烘干机旋转速度为300rpm/min。
优选地,步骤2中,所述稀酸为浓度2wt%的硝酸溶液。
优选地,步骤3中,进行离子交换处理前,还包括对D201大孔弱碱性阴离子弱碱树脂柱进行活化处理,具体包括:将D201大孔弱碱性阴离子弱碱树脂柱先采用2倍树脂体积的HCl溶液,HCl溶液的浓度为1wt%,以5m/h的线速度通过树脂柱,再用软水以10m/h的线速度通过树脂柱;接着采用2倍树脂体积的CH3COONa溶液,CH3COONa溶液为4wt%,以2m/h的线速度通过树脂柱,再用软水以10m/h的线速度通过树脂柱。
实施例2:
一种糯米粉加工污水沉淀物处理回收方法,处理方法如下:
(1)收集糯米粉加工污水,集中回收进入存储池,存储池下方设置有加热系统,存储池温度控制在30℃,将回收污水存储在池中静置2h,后将上清液通过连接管道导入下一级存储池中,并收集此存储池中沉淀物;
(2)将步骤1收集沉淀物加入稀酸后调节pH为6,加热至70℃后搅拌40min,静置分层后去除上层上清液,并收集调酸搅拌静置后的沉淀物;
(3)将步骤2处理后的沉淀物加水稀释至含酸量为0.03wt%,再预热至30℃,通过D201大孔弱碱性阴离子弱碱树脂柱进行酸碱中和,流速为3.5mL/min,进行除酸处理;
(4)将步骤3得到的除酸处理物预热至30℃后,加入清水搅拌30min后静置,过滤,得滤清液和沉淀物;
(5)将收集后的沉淀物放置太阳下晾晒,至水分含量在15%以内待用;
(6)将晒干后的沉淀物放入粉碎机粉碎,然后过200目筛,得粉料待用;
(7)将粉料放入山泉水中浸泡16小时,去除色素,撇去上清液,得粗淀粉待用;
(8)将粗淀粉放在冷冻设备中,在-10℃的温度下冷冻5小时,得到冻干粉待用;
(9)将冻干粉放入烘干机中,在120℃温度下旋转烘烤90秒,取出烘烤后的淀粉自然冷却,杀菌即可完成处理。
所述烘干机旋转速度为500rpm/min。
优选地,步骤2中,所述稀酸为浓度2wt%的硝酸溶液。
优选地,步骤3中,进行离子交换处理前,还包括对D201大孔弱碱性阴离子弱碱树脂柱进行活化处理,具体包括:将D201大孔弱碱性阴离子弱碱树脂柱先采用2倍树脂体积的HCl溶液,HCl溶液的浓度为2wt%,以5m/h的线速度通过树脂柱,再用软水以10m/h的线速度通过树脂柱;接着采用3倍树脂体积的CH3COONa溶液,CH3COONa溶液为5wt%,以2m/h的线速度通过树脂柱,再用软水以12m/h的线速度通过树脂柱。
对本发明提供的实施例中分别进行试验考察,由实施例1和实施例2糯米粉加工污水沉淀物处理回收方法,处理后的糯米粉进行考察,结果如表1所示;
表1考察结果
通过实施例1和实施例2糯米粉加工污水沉淀物处理回收方法,由检测结果显示:糯米淀粉各项检测指标合格,通过工艺去除污水中的杂质,对沉淀物进行加工处理,对水源进行净化,回收的水可以循环使用,本发明方法具有方法简单,成本低廉等优点,资源利用率高,得到的淀粉可用于医药、食品、饲料等领域,提高了企业的附加值,同时也解决了污染问题,保护了环境。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (4)
1.一种糯米粉加工污水沉淀物处理回收方法,其特征在于:糯米粉加工污水沉淀物处理回收方法,处理方法如下:
(1)收集糯米粉加工污水,集中回收进入存储池,存储池下方设置有加热系统,存储池温度控制在30-45℃,将回收污水存储在池中静置2-4h,后将上清液通过连接管道导入下一级存储池中,并收集此存储池中沉淀物;
(2)将步骤1收集沉淀物加入稀酸后调节pH为5-6,加热至70-80℃后搅拌40-60min,静置分层后去除上层上清液,并收集调酸搅拌静置后的沉淀物;
(3)将步骤2处理后的沉淀物加水稀释至含酸量为0.03-0.045wt%,再预热至30-60℃,通过D201大孔弱碱性阴离子弱碱树脂柱进行酸碱中和,流速为3.5-4.7mL/min,进行除酸处理;
(4)将步骤3得到的除酸处理物预热至30-40℃后,加入清水搅拌30-60min后静置,过滤,得滤清液和沉淀物;
(5)将收集后的沉淀物放置太阳下晾晒,至水分含量在15%以内待用;
(6)将晒干后的沉淀物放入粉碎机粉碎,然后过200目筛,得粉料待用;
(7)将粉料放入山泉水中浸泡12-24小时,去除色素,撇去上清液,得粗淀粉待用;
(8)将粗淀粉放在冷冻设备中,在-10℃的温度下冷冻4~5小时,得到冻干粉待用;
(9)将冻干粉放入烘干机中,在120℃温度下旋转烘烤30-90秒,取出烘烤后的淀粉自然冷却,杀菌即可完成处理。
2.根据权利要求1所述的糯米粉加工污水沉淀物处理回收方法,其特征在于:烘干机旋转速度为200-500rpm/min。
3.根据权利要求1所述的糯米粉加工污水沉淀物处理回收方法,其特征在于:步骤2中,所述稀酸为浓度2-3wt%的硝酸溶液。
4.根据权利要求1所述的糯米粉加工污水沉淀物处理回收方法,其特征在于:步骤3中,进行离子交换处理前,还包括对D201大孔弱碱性阴离子弱碱树脂柱进行活化处理,具体包括:将D201大孔弱碱性阴离子弱碱树脂柱先采用1-2倍树脂体积的HCl溶液,HCl溶液的浓度为1-2wt%,以3-5m/h的线速度通过树脂柱,再用软水以8-10m/h的线速度通过树脂柱;接着采用2-3倍树脂体积的CH3COONa溶液,CH3COONa溶液为3-5wt%,以1-2m/h的线速度通过树脂柱,再用软水以10-12m/h的线速度通过树脂柱。
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