CN1063413C - 污泥或藻渣复混肥及其制备方法 - Google Patents

污泥或藻渣复混肥及其制备方法 Download PDF

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CN1063413C
CN1063413C CN96122252A CN96122252A CN1063413C CN 1063413 C CN1063413 C CN 1063413C CN 96122252 A CN96122252 A CN 96122252A CN 96122252 A CN96122252 A CN 96122252A CN 1063413 C CN1063413 C CN 1063413C
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fertilizer
mud
algae
residue
compound fertilizer
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CN1155529A (zh
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曾波
林克惠
杨昌洪
刘准
李�杰
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Li Jie
Lin Kehui
Liu Zumao
Xue Lingke
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YUNNAN ENVIRONMENT PROTECTION SCIENCE AND TECHNOLOGY INST
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    • 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
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses

Abstract

本发明是一种污泥或藻渣复混肥及其制备方法，其特征在于该复混肥以重量百分比计由25-40%含水率5-10%的污泥或藻渣、以有效氮计2-6%的氮肥、以五氧化二磷计2-6%的磷肥，以氧化钾计6-12%的钾肥和辅料组成。本发明能充分利用废弃物，具节约了资源又解决了废弃物处理问题，既改善了环境，并解决了含水份较高的湿污泥和藻渣的脱水难题。复混肥可使作物增产，且能改良已板结的土壤，保待土壤的松散性和持水性。

Description

污泥或藻渣复混肥及其制备方法
本发明涉及农用肥料技术领域，具体地说是污泥或藻渣复混肥及其制备方法。
由于污泥和藻渣中含有大量有机质成份和一定量的N、P2O5、K2O、Cu、B、Zn等有效物质，是一种很好的农用肥料。目前国内外利用城市污泥生产肥料，均采用湿污泥直接施用。由于湿污泥含水量较高，施用不方便，一直阻碍污泥的综合利用，同时造成环境的二次污染。
本发明的目的是提供一种利用污泥或藻渣的肥料价值，将污泥、藻渣制成使用方便、卫生肥效好的污泥或藻渣复混肥及其制备方法。
本发明是这样实现的：利用城市污水处理废弃物-污泥或自来水厂处理废弃物-藻渣制取有机复混肥。并采取污泥、藻渣干躁-活化-混合-造粒的方法制取。
本发明的复混肥的配制是以有机物为基础加入一定量的无机成份，具体为：该复混肥以重量百分比计由25-40％含水率5-10％的污泥或藻渣、以有效氮计2-6％的氮肥、以五氯化二磷(P2O5)计2-6％的磷肥，以氧化钾(K2O)计6-12％的钾肥和辅料组成；所用的含氮的氮肥为硝铵、尿素或碳酸氢铵，所用的含磷的磷肥为普钙、重过磷酸钙、磷酸二铵、磷酸一铵或氯化铵，所用的含钾的钾肥为硫酸钾或氯化钾，辅料为蛭石、膨润土或磷矿粉。
上述污泥或藻渣复混肥的制备方法是：将含水率为70-80％的污泥或藻渣脱水至含水率5-10％，加入含水10％的甲醇或乙醇作为活化剂，通过醇类活化剂与污泥或藻渣中有机质的结合，达到其活化的目的，然后再按比例加入氮、磷、钾肥混合，经挤压造粒得产品。
其中的脱水方法是在热烟气加热条件下，经过旋转内蒸干燥机干燥得脱水污泥或藻渣，其干燥时间为5-30分钟，干燥烟气的温度保持在130-250℃。
以下结合附图和实施例对本发明作进一步的详述。
图1为本实用新型的工艺流程图
实施例1：
用污水厂排出的含水率为70-80％的湿污泥100公斤，经170℃热烟气干燥得到含水率为5％的干污泥26.5公斤，加入醇类活化剂甲醇0.05公斤，之后与含氮(N)量34％的硝铵14.7公斤，含五氧化二磷(P2O5)46％的重过磷酸钙11公斤，含氧化钾(K2O)50％的硫酸钾20公斤，辅料(蛭石)29公斤混合均匀，机械挤压造粒得产品(N∶P2O5∶K2O∶有机质=5∶5∶10∶12)100公斤。
实施例2：
用自来水厂处理废弃湿藻渣(含水率80％)125公斤，经170℃热烟气干燥得含水率10％的干藻渣27.7公斤，加入醇类活化剂乙醇0.05公斤，再与含氮(N)量46％的尿素13公斤、含五氧化二磷(P2O5)18％的普钙33.3公斤、含氧化钾(K2O)60％的氯化钾20公斤、辅料(膨润土)8公斤混合均匀，机械挤压造粒得(N∶P2O5∶K2O∶有机质=6∶6∶12∶12)有机复混肥产品100公斤。
本发明的复混肥及其制备方法具有以下极积效果：
1、充分利用废弃物，具节约了资源又解决了废弃物处理问题，既改善了环境，又做到废物的综合利用，为农作物提供生长必须的有机质。
2、本发明的配方能保持污泥或藻渣中的有机质成份的稳定，又具有农作物所需的其化营养成份(如氮、磷、钾)。
3、制备工艺中的干躁时间短使污泥或藻渣中的有机成份不会被损坏，以保持肥料的价值，又达到脱水的目的，解决了含水份较高的湿污泥和藻渣的脱水难题。
4、按各种农作物需要，变化氮、磷、钾含量配制的有机复混肥，针对性强，可使作物增产，且能改良已板结的土壤，保待土壤的松散性和持水性。

Claims (3)

1、一种污泥或藻渣复混肥，其特征在于该复混肥以重量百分比计由25-40％含水率5-10％的污泥或藻渣、以有效氮计2-6％的氮肥、以五氧化二磷计2-6％的磷肥、以氧化钾计6-12％的钾肥和辅料组成；所用的含氮的氮肥为硝铵、尿素或碳酸氢铵，所用的含磷的磷肥为普钙、重过磷酸钙、磷酸二铵、磷酸一铵或氯化铵，所用的含钾的钾肥为硫酸钾或氯化钾，辅料为蛭石、膨润土或磷矿粉。
2、根据权利要求1所述的污泥或藻渣复混肥的制备方法，其特征在于将含水率为70-80％的污泥或藻渣脱水至含水率5-10％，加入含水10％的甲醇或乙醇作为活化剂，再按比例加入氮、磷、钾肥混合，经挤压造粒得产品。
3、根据权利要求2所述的污泥或藻渣复混肥的制备方法，其特征在于所述的脱水方法是在热烟气加热条件下，经过旋转内蒸干燥机干燥得脱水污泥或藻渣，其干燥时间为5-30分钟，干燥烟气的温度保持在130-250℃。
CN96122252A 1996-11-13 1996-11-13 污泥或藻渣复混肥及其制备方法 Expired - Fee Related CN1063413C (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9386774B2 (en) 2014-12-16 2016-07-12 Heliae Development, Llc Application of mixotrophic chlorella for the improved yield and quality of solanaceae plants
US10701941B2 (en) 2017-11-10 2020-07-07 Heliae Development, Llc Biomass compositions

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102372506B (zh) * 2010-08-20 2014-05-28 中国科学院海洋研究所 一种卡拉胶藻渣有机肥料及其制备方法
DE102012006283A1 (de) * 2012-03-29 2013-10-02 Pt Arquus Nusantara Feste Bestandteile und feste beladene Bestandteile des Seetangs
CN103666005A (zh) * 2013-12-20 2014-03-26 北京矿冶研究总院 镍包膨润土或硅藻土复合粉末及其制备方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1097724A (zh) * 1994-06-08 1995-01-25 姚广忠 利用城市污泥、粪便生产高效颗粒有机肥料的方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1097724A (zh) * 1994-06-08 1995-01-25 姚广忠 利用城市污泥、粪便生产高效颗粒有机肥料的方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9386774B2 (en) 2014-12-16 2016-07-12 Heliae Development, Llc Application of mixotrophic chlorella for the improved yield and quality of solanaceae plants
US10701941B2 (en) 2017-11-10 2020-07-07 Heliae Development, Llc Biomass compositions
US11102985B2 (en) 2017-11-10 2021-08-31 Heliae Development, Llc Biomass compositions and methods for making the same

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