The pre-treatment system experienced plugging by ammoniasalt 7 months after the unit came on stream and corrosion leakage 12 month after the start-up of the unit.
装置开工运转7个月后预处理系统首次出现铵盐堵塞现象，12个月后设备开始出现腐蚀泄漏情况。
2
We have used the iron salt dearsenic method in the alkaline ammonia immersion technology successfully.
将铁盐除砷方法运用于碱性氨浸工艺中获得成功，对操作条件进行了总结，对除砷机理作了解。
3
The operation results show that the basic oxidation is effect to decrease the contents of ammonia nitrogen, phosphide and salt. This is very favorable to the following biological treatment.