Modifier for wet magnesium desulphurization slag, wet magnesium desulphurization slag and preparation method of wet magnesium desulphurization slag

• Main Authors: TANG SHUANHU, ZHANG FABAO, GUO SHAOPING, PANG YUWAN, SUN MINGKUN
• Format: Patent
• Language: Chinese; English
• Published: 17.05.2017
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; DISPOSAL OF SOLID WASTE; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINED SOIL SOIL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a modifier for wet magnesium desulphurization slag, the wet magnesium desulphurization slag and a preparation method of the wet magnesium desulphurization slag. The modifier comprises raw materials in parts by mass as follows: 9-35 parts of sawdust, 6-12 parts of biochar, 10-18 parts of attapulgite, 8-25 parts of bentonite, 6-20 parts of fly ash and 18-35 parts of decoloring clay. Through specific matching of the raw materials including the sawdust, the biochar, the attapulgite, the bentonite, the fly ash and the decoloring clay, the wet magnesium desulphurization slag prepared from the modifier is not prone to hardening, is higher in solubility and is higher in ammonia nitrogen and total phosphorus removal efficiency when used for treating high ammonia-nitrogen wastewater. 本发明公开了湿式镁法脱硫渣的改性剂、湿式镁法脱硫渣及其制备方法。该改性剂的原料按照质量份包含9～35份木糠、6～12份生物炭、10～18份凹凸棒土、8～25份膨润土、6～20份粉煤灰和18～35份脱色土。本发明的改性剂，其原料包含木糠、生物炭、凹凸棒土、膨润土、粉煤灰、脱色土，这些原料经过特定配比，使得采用该改性剂所制备的湿式镁法脱硫渣不易板结、溶解度较高，应用在高氨氮废水的处理时其氨氮、总磷的去除效率较高。