Q请教各位地主大侠，电热水器中出现黑色颗粒是怎么回事？

水是自备井水。冷水没问题，热水龙头初开，当水还是凉的时，水是清澈的，一旦水开始变热，细微的黑色颗粒就混杂其中。30秒到1分钟左右后水又变的清澈。
检查热水器，打开热水器下方的冲水阀，开始时流出的也是含黑色颗粒的水。
请各位大侠不吝指教。先谢了。

所有跟帖： 

• 回复：电热水器中出现黑色颗粒是怎么回事？ -梁山sl- ♂ (290 bytes) () 10/08/2012 postreply 08:12:33

• 回复：回复：电热水器中出现黑色颗粒是怎么回事？ -2009999- ♀ (328 bytes) () 10/08/2012 postreply 08:46:39

• 那你的热水器可能里面生锈了, 要换一个. -梁山sl- ♂ (80 bytes) () 10/08/2012 postreply 09:05:13

• 回复：那你的热水器可能里面生锈了, 要换一个. -2009999- ♀ (33 bytes) () 10/08/2012 postreply 09:09:15

• 您的位置可能是hard water, 试试每两月一次彻底换热水缸里的水，方法如下: -梁山sl- ♂ (202 bytes) () 10/08/2012 postreply 11:02:11

• 回复：您的位置可能是hard water, 试试每两月一次彻底换热水缸里的水，方法如下: -2009999- ♀ (88 bytes) () 10/08/2012 postreply 15:13:20

• 这么明显，有可能还是个罪魁祸首呢，换了吧。 -梁山sl- ♂ (0 bytes) () 10/08/2012 postreply 20:11:51

• 回复：这么明显，有可能还是个罪魁祸首呢，换了吧。 -2009999- ♀ (194 bytes) () 10/09/2012 postreply 09:11:09

• your heating element is corroded (there are two of them) -borisg- ♀ (102 bytes) () 10/08/2012 postreply 09:17:21

• 回复：your heating element is corroded (there are two of them) -2009999- ♀ (44 bytes) () 10/08/2012 postreply 09:24:55

• 回复：回复：your heating element is corroded (there are two of them) -2009999- ♀ (155 bytes) () 10/08/2012 postreply 14:40:58

• 回复：回复：回复：your heating element is corroded (there are two of them -2009999- ♀ (98 bytes) () 10/08/2012 postreply 15:18:45

• yes, the top one became black because the water level was too lo -borisg- ♀ (0 bytes) () 10/08/2012 postreply 17:18:07

• yes, the top one became black because the water level was too lo -borisg- ♀ (69 bytes) () 10/08/2012 postreply 17:18:25

• 回复：yes, the top one became black because the water level was too -2009999- ♀ (44 bytes) () 10/08/2012 postreply 19:55:48