公开(公告)号：US5863442A

公开(公告)日：1999-01-26

申请号：US857203

申请日：1997-05-15

申请人： Roger Noero

发明人： Roger Noero

IPC分类号： G03C5/00 ,  C01B17/05 ,  C01B17/50 ,  C01C1/02 ,  C02F1/58 ,  C02F1/62 ,  C02F1/64 ,  C02F1/72 ,  C02F9/00 ,  C02F1/20

CPC分类号： C02F1/20 ,  C01B17/05 ,  C01B17/508 ,  C01C1/026 ,  C02F1/66 ,  C02F9/00 ,  C02F2101/101 ,  C02F2101/20 ,  C02F2103/40 ,  C02F2209/06 ,  C02F2301/063

摘要： A process for the processing of spent photographic baths of black and white processes, namely developing baths with a preponderant content of alkali sulphite, particularly sodium sulphite, and fixing baths with a preponderant content of thiosulphates, particularly ammonium thiosulphate and/or sodium thiosulphate is proposed and is characterized in that following the deposition of the silver contained in the baths, the spent fixing baths are brought to a pH of approximately 0.5 with concentrated HCl and the elementary sulphur resulting from the decomposition of the thiosulphates is separated, whilst the remaining sulphurous acid intermediate solution is mixed with the spent developing baths and adjusted to a pH of approximately 2 and the resulting, SO.sub.2 -supersaturated solution is heated and pure SO.sub.2 is drawn off in a vacuum. Finally, the residual solution is adjusted to a pH of approximately 10 with Ca(OH).sub.2 and the liberated ammonia is drawn off.

摘要翻译： 提出了一种处理黑色和白色工艺用过的照相浴的方法，即开发具有碱金属亚硫酸盐，特别是亚硫酸钠的主要含量的洗浴，以及含硫代硫酸盐，特别是硫代硫酸钠和/或硫代硫酸钠的重要含量的固定浴。 并且其特征在于，在沉积包含在浴中的银之后，用浓HCl将废定影液的pH调至约为0.5，并且由硫代硫酸盐分解产生的元素硫被分离，而其余的亚硫酸 将中间溶液与废显影浴混合并调节至约2的pH，并且将所得的SO 2过饱和溶液加热并在真空中抽出纯的SO 2。 最后，用Ca（OH）2将残余溶液调节至约10左右，释放出的氨被排出。

公开(公告)号：US5783374A

公开(公告)日：1998-07-21

申请号：US857676

申请日：1997-05-16

申请人： Roger Noero

发明人： Roger Noero

IPC分类号： G03C5/00 ,  C01B17/05 ,  C01B17/50 ,  C01C1/02 ,  C02F1/20 ,  C02F1/58 ,  C02F1/62 ,  C02F1/64 ,  C02F1/72 ,  C02F9/00 ,  G03C7/44

CPC分类号： C01B17/508 ,  C01B17/05 ,  C01C1/026 ,  C02F1/64 ,  C02F1/66 ,  C02F9/00 ,  C02F2101/101 ,  C02F2101/20 ,  C02F2101/203 ,  C02F2101/303 ,  C02F2103/40

摘要： A process for the processing of spent photographic baths from color processes, namely bleaching or fixing baths with a preponderant content of amonium-Fe-EDTA (ethylene diamine tetraacetic acid) as the sequestering agent, fixing baths with a preponderant content of thiosulphates, particularly ammonium thiosulphate and optionally sodium thiosulphate, and developing baths with a preponderant content of sulfate, particularly sodium sulfite is proposed, which is characterized in that, following the deposition of the silver contained in the baths, the multipart starting solution is adjusted to a pH of approximately 13.5 to 14 using NaOH and the Fe(OH).sub.3 obtained after Fe complex decomposition is separated, the remaining, first intermediate solution is adjusted to a pH of 10 by adding acid and the resulting ammonia is separated, the remaining, second intermediate solution is brought to a pH of approximately 0.5 with concentrated HCl, the thiosulphates being decomposed into elementary sulphur and sulphurous acid and the sulphur is separated, the remaining, third intermediate solution is raised to a pH of approximately 1.5 with inorganic liquor and the crystallizing out EDTA is drawn off, the residual solution mixed with developing baths is raised to pH-3 and the sulfate contained therein is transformed into SO.sub.2, which is separated.

摘要翻译： 用于处理来自彩色工艺的废照相浴的方法，即漂白或固定浴，其中主要含量为钚-Fe-EDTA（乙二胺四乙酸）作为螯合剂，固定具有优势含量的硫代硫酸盐，特别是铵 提出了硫代硫酸盐和任选的硫代硫酸钠，并且提出了具有优势含量的硫酸盐，特别是亚硫酸钠的显影浴，其特征在于，在浴中包含的银沉积之后，将多部分起始溶液调节至大约的pH 使用NaOH进行13.5〜14℃，分离Fe络合物分解后得到的Fe（OH）3，通过加入酸将剩余的第一中间溶液调节至pH为10，分离得到的氨，剩余的第二中间溶液为 用浓HCl使pH达到约0.5，硫代硫酸盐分解成元素硫 和亚硫酸，硫分离，剩余的第三中间溶液用无机液体升至约1.5的pH，并将EDTA结晶除去，将与显影浴混合的残余溶液升至pH-3， 其中所含的硫酸盐转化为SO2，分离。