The research on practical application of the resource recovery type processing technology of waste water from electro-less deposition process for the information related parts

（1）目的：利用无电沉积过程，为电子和与信息有关的部件的制造广泛利用，例如计算机中的硬盘和集成电子电路，包括磷化合物中的磷化合物、有机物质和氨，以及非常高浓度的有机物质和氨，而不是重金属。在进行重金属回收的最后治疗后，水被倾倒进海洋。由于海洋争端自1995年以来一直被遗忘，因此，居住者在蒸发后被安置在地面上。However，资源恢复类型的处理技术尚未被确定，该研究的目的是建立处理技术以恢复镍和磷、废水的有机物质和氨，以及处理工厂必要性的设计和操作指南，该技术商业化的设计和操作。（2）结果Nickel（II）是一个完全通过电化学过程完全恢复的二氧化物涂层钛板，即一个阳极和d钛板，即一个阴极。在废物水中，超磷酸盐和磷酸盐被完全氧化到正磷酸盐。过程中消耗的电力为580千瓦小时/m^<3->浪费水，100%的磷酸盐和90%的氨被MAP（NH_4MgPO_4· 6H_2O）过程恢复。“有效的利用作为一种肥料剂对MAP的克里斯汀的预防是可能的。”Mg（OH）_2为1米^3水溶液添加了160公斤，并恢复了650公斤的MAP。活性泥浆过程中的微生物的BOD和氨相应减少到99.8%和99%。基本设计和操作指南是为实际加工工厂制造的。（3）前景在未来研究中，演示实验是必要的，要通过金属板工厂与私营企业合作，使该技术商业化。

(1)PurposeThe wastewater, from electro-less deposition process, which is widely utilized for the manufacturing of electronics and information related parts such as hard disks and integrated electronic circuits in computers, includes phosphorus compounds, organic substances and ammonia at the very high concentration, besides the heavy metals. After the final treatment for heavy metal recovery, the wastewater had been dumped into ocean. As the sea-disposal had been forbidden since 1995, the residues have been disposed in ground after evaporation to dryness. However, the processing technology of the resource recovery type has not been established.The purpose of this study is the establishment of the processing technology to recover nickel and phosphorus, organic substance and ammonia for the wastewater, and the guideline of design and operation of the processing plant necessary for the commercialization of this technology.(2)ResultsNickel (II) was perfectly recovered by electrolysis process with lead dioxide coat titanium plate as an anode an d titanium plate as a cathode.Hypo-phosphoric acid and phosphorous acid in waste water were perfectly oxidized to ortho-phosphoric acid. The consumed electric power for the process was 580kWh/m^<3-> waste water.100% phosphorus and 90% ammonia were recovered by the MAP(NH_4MgPO_4・ 6H_2O) process. The effective utilization as a fertilizer is possible for the crystalline precipitation of MAP. Optimum addition of Mg(OH)_2 was 160kg for 1m^3 wastewater, and 650kg of MAP was recovered.BOD and ammonia respectively reduced down to 99.8% and 99% by microorganisms in the activated sludge process.The guideline of basic design and operation was made for the actual processing plant.(3)ProspectIn the future research, the demonstration experiment is necessary to be carried out in electrolysis metal-plating factory by cooperating with the private enterprises to commercialize this technology.