Technical Equipment for Arsenic Removal and Purification of Groundwater
admin
2022-09-17
地下水除砷净化技术设备
Technical Equipment for Arsenic Removal and Purification of Groundwater
技术编号
NMG-005
提供单位
鄂尔多斯市安信泰环保科技有限公司
技术大类
污染控制技术
联系人
翟学东
技术类型
水污染物控制技术
电话
18048275166
邮箱
anxintai@163.com
适用范围
节能环保行业,适用于水源水砷超标地区。
推荐单位
内蒙古自治区科学技术厅
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Technical principle and process routeWater purification equipment is mainly using high arsenic agent and functional arsenic removal filter material with removal of arsenic and arsenic removal agent can efficiently react with the arsenic in the water to form pellet flocs, through the follow-up after functional arsenic removal filter, arsenic is removed, to ensure that the concentration of arsenic in water meet the requirements in GB5749-2006 "Standards for drinking water quality".
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技术提供方鄂尔多斯市安信泰环保科技有限公司和哈尔滨工业大学
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技术主要指标信息规格:过滤罐体直径3-5m,高4.7m;占地面积:400㎡;重量:30-50吨
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商业应用情况工程名称:鄂尔多斯市泰发祥水务有限公司乌兰镇饮用水达标提标工程,工程地点:鄂尔多斯市鄂托克旗乌兰镇,工程规模:项目总规模2000吨/日,一套。该套设备将乌兰镇饮用水中的砷从47微克/升降至2.7微克/升(国家标准为10微克/升),为区域4万余人口提供安全饮水服务。该技术设备配备了反洗水回收装置,相比传统供水工艺,极大减少了废水排放,提高社会、环境、经济效益。
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希望在技术转移过程中得到的帮助/支持
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商业应用单位联系人/电话/邮箱
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设备投资以水处理规模为2000吨/日的除砷项目水厂为例,投入的主要设备为除砷过滤器(三个层级)、加药设备及废水回收系统,设备总投资额约200万元-300万元。除砷设备运行占地约400平米,关键部件使用寿命20年以上。对于地下水砷浓度在50微克/升以下的原水,此套除砷技术可永久适用。
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年运行维护费用水处理规模为2000吨/日/套的除砷设备,单套设备运行过程中,增加制水直接成本主要包括药剂费(除砷剂)约0.10元/吨水,设备过滤介质维护费0.25元/吨水,活化材料及除砷材料维护更换费用为0.15元/吨水等。即每日达标处理耗费材料约为2000t*(0.1+0.25+0.15)=1000元。 设备有废水回收系统,主体设备(反洗水)废水率不足1%。若日处理水量2000t,反洗水约50t左右,50t反洗水可回收70%,最终废水15t,综合水价约为4.5元/吨。即每日达标处理耗用水量费用约为67.5元。 设备运行每天总用电量约8KW*H,工业用电每千瓦0.7元, 每天耗用电费约5.6元。 设备运行需要配备2名值守人员,定期检查工况状态及维护保养,负责修理及综合管理。技术人员按4500元/月/人。每日人工费用为300元。 设备折旧费核算,参照财政部的有关固定资产折旧的规定,通常设备折旧年限均少于20年,按机械设备折旧15年计算,一套设备投资约300万元。按平均年限法折旧,日折损额约548元。 综上,设备运行维护费用主要包括:材料耗用、水、电、人工及设备折旧费用,每日运行费用约1921元。
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投资回收期以鄂尔多斯某镇生活用水水质提升项目为例,投资建设一套除砷设备,其中前期设备投资约300万、人工及运行维护费用投入约1921元/日。 收益依据设备处理水量收取,水费按1.4-1.8元/吨收取,水处理量按2000吨/日/套计算,每年可获得收入约(1.8元*2000t*365天)102.2万元-(1.6元*2000t*365天)131.4万元。 按照以上价格收费,5-10年可收回投资成本。
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附加效益1.提高水的重复利用,降低废水量:一般水厂中除砷设备废水率约为3-5%,本项目设备可高效利用水资源,反洗水回收设备可回收60-80%的反洗水,主体设备(反洗水)废水率不足1%。以日处理水量2000t,同类技术产品的废水量约为60-100t,我司提供的除砷技术设备废水量约为20t,同样的处理量,每日可节约水量40-80t。 2.节约人工费用:我司研制的除砷设备实现了高度智能化,运行全过程可实现自动启停以及自动反冲洗程序,减少了运行人员投入。并且此设备可通过网络客户端进行实时监控数据。在未来的城市智慧水务建设中此设备也可与其兼容。未启用智能化控制前,系统运行至少需要6人不间断跟踪维护,现在我们只需2人轻松值守,节约大量人员费用支出,并减少人工误差及反应不及时的问题。技术人员按4500元/人/月,每月可节省人员费用18000元。 3.增加企业供水量,提高企业的经济效益:对于水厂而言,节水及提高水的利用率就是增加企业供水量,按每日节约水量40-80t计算,综合居民水价4.5元/吨,即每日可增加180-360元。
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Techniques and synthetic benefitAt present, membrane filtration and activated alumina adsorption are most widely studied technologies for arsenic removal from drinking water. Membrane to remove arsenic, just using the physics principle to filter and intercept , trapped arsenic is stored in wastewater and discharged into municipal pipe, creates environmental pollution. Moreover, the construction cost of a ton of water is about 6000 RMB, and the cost of processing is 10 RMB, wastewater generation rate of 30-50%. Membrane in good situation, the system runs stably, but the economic benefit is poor, not suitable for low-economic areas. In addition, the lifetime and chemical backwashing period are greatly affected by the arsenic removal agent. The construction cost of activated alumina process to remove arsenic per ton of water is about 2000 RMB, and the cost of processing is 0.8-1.0 RMB. In the process of operation, there will be consolidation, short flow, easy saturation, need for regeneration, high operation cost, effluent instability and tail water toxicity. So these two kinds of arsenic removal process have some shortcomings. Compared with the traditional arsenic removal process, our process has advantages:(1) technical advantages, we use a unique modified filter material, different arsenic removal agents and filter materials can be used to treat drinking water with different arsenic levels and to ensure the safety of drinking water. (2) Saving advantages: Generally, the wastewater rate of arsenic removal equipment in treatment plant is about 3-5%. The equipment of this project can make use water more efficiently, during operation, the main equipment produces 3-5% wastewater, but equipped with a recycling system, the waste water can be recovered 60-80% again, and the final wastewater rate is less than 1%. (3) Cost advantage: the cost of our equipment and materials is slightly lower than that of similar products in the industry. The construction cost of a ton of water is about 1500 RMB, and the operating cost is 0.6-0.8 RMB. The operation is stable, the arsenic concentration of tail water is acceptable in the municipal sewage treatment plant, and the comprehensive technical benefits are good.
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障碍对技术转移影响等级0
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提交日期2020/12/29
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Technology maturity analysisAt present, traditional membrane filtration and activated alumina are the main treatment processes, the treatment effect of arsenic is unstable, and the long-term allowable exchange capacity of arsenic decreases and the filter material is common problems. In addition, the treatment of chemical backwash solution is more difficult. The technology involved in this project can effectively adsorb arsenic in water during the application process, and the modified filter material increases the adsorption capacity and prolongs the lifetime. In addition, the technology is also equipped with a backwash system, reducing wastewater rate. Not only profits, but also improve environment. The equipment is highly intelligent, automatic start-stop, automatic backwash, reduce personnel costs. In general, the technology equipment maturity is high, has completed the pilot test, pilot test, engineering demonstration, equipment has completed the standardized design, the control system has realized automatic operation, the system has integrated a number of national science and technology major special achievements, the operation and maintenance effect is stable, high maturity.
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Technical adaptability analysisThis technology is suitable for the areas where arsenic exceeds the standard of water, and water supply plants which have no alternative water source, especially some small dispersed water supply facilities. There are no specific conditions for the use of this technique. The technical equipment involves arsenic removal agent, filter material commissioned by large manufacturers, upstream and downstream industry chain is complete, our company has formed a long-term stable cooperative relationship with suppliers, can ensure that the arsenic removal water treatment system according to the plan to complete the design, construction, operation. Therefore, the limitation of water purification equipment involved in this project is relatively small. Other regions, scale, environment, resources and energy factors unrestricted conditions.
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Technical stability analysisIn fact, the technology has been operating steadily for a year, arsenic in drinking water can be removed from 47 micrograms/lift to 2.7 micrograms per liter (national standard of 10 micrograms per liter), and the system can be adjusted dosage according to water flow, has stronger ability to resist shock, ensure stable operation in the condition of water quality and quantity fluctuation. The equipment control system is highly intelligent, safe and reliable during operation, low failure rate and strong anti-interference.
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Technical safety analysisThe technology in the practical application process, through arsenic removal agent can effectively oxidize the trivalent arsenic in the water to low-toxic pentavalent arsenic, through the subsequent process to remove the arsenic, wastewater by tested can be directly discharged into the municipal pipe. No secondary pollution, flammable and explosive highly toxic substances leakage, environmental and safety accidents risk. The company has mastered core production processes, the equipment is purchased and installed by ourself, the production of raw materials and procurement of agents has formed a long-term and stable cooperative relationship with suppliers. There is no system risk of upstream resource limitation, imperfect supporting facilities and low market acceptance.
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技术转移推广障碍0
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知识产权转让该除砷技术由哈尔滨工业大学与鄂尔多斯市安信泰环保科技有限公司联合研发。涉及到的专利技术如:一种水微量砷的去除(ZL201410186368.1)、一种铁钛锰三元复合除砷吸附剂的制备方法(201711188169.4)、一种颗粒状的饮用水除砷吸附材料的制备201811055081.X等。国内目前中科院生态中心开展了相关领域的技术研发和产业化示范。