Give an example of how to handle chemical waste?
Answer: (1) Acidic waste liquid. The waste liquid is slowly poured into an excess of an aqueous solution containing sodium carbonate or calcium hydroxide, or neutralized with a spent caustic solution, neutralized, and rinsed with a large amount of water. (2) Waste liquid of sodium hydroxide and ammonia. After neutralizing with a 6 mol/L aqueous hydrochloric acid solution, it was rinsed with a large amount of water. (3) Cyanide waste liquid (NaCN, KCN). Add 25mL of 5% NaOH or 10% per 100mL of waste liquid The Na2CO3 solution and 25 mL of FeSO4 solution were thoroughly stirred and heated slightly to convert them into a non-toxic iron hydride solution, which was then poured off. (4) Fluoride waste liquid. Two times the equivalent of CaCl2 or Ca0 is added to cause the CaF2 precipitate to be poured out. ⑸ arsenic compounds, mercury compounds high waste. Pass H2S to make As2S3 and ç‘HgS precipitate, then pour off. JXHS series Junction Box advanced technology during production, stresses the details during design, implements design standard during processing, and has high consistence of product quality. It has various features such as strong damp proof, anti-corrosion and anti-electromagnetic capacities and high adjustment accuracy, and is suitable for various adverse environments. Its main advantages include: Electrical Junction Box,Normal Junction Box,8-Wire Normal Junction Box,Normal Analogue Junction Box SHANDONG JINZHONG SCIENCE & TECHNOLOGY GROUP COMPANY LIMITED , https://www.chinagoldbell.com
The product uses own mold to make technologic design, the housing uses aluminum and silicon alloy and upper protrusion and lower sinking structure is used so as to ensure good sealing performance; protective grade reaches IP 68.
Main parts are imported, wiring bar is welded with precise anti-surge electronic components, which can prevent Load Cell damage caused by lightning and power grid surge voltage.
Whole device uses stainless steel grounding bolts to ensure reliable grounding during operation.
Assembly of junction box uses not-loose screws so as to avoid loss during load cell wring.
Wiring board uses combined screws for assembly, which are convenient for removal.
In order to ensure protective effect, force and diameter of tightening parts have introduction.