Technological advantages of Jiashang environmental protection
Why choose on-site sodium hypochlorite preparation technology
------ Safe,economical and practical
1,security:
Safety is the concept we have always adhered to, mainly in the following aspects
Safe raw materials: refined salt, electricity and water
Safe process: there is no potential risk of chlorine leakage, and the system adopts 11 safety guarantees
Safe products:
Sodium hypochlorite with a concentration lower than 1% is a safe concentration
Sodium hypochlorite with a concentration lower than 1% will not decay during storage
By products are lower than commercial sodium hypochlorite
2,Economy
A,Economic analysis
| On site electrolysis |
Raw material price |
Consumption |
Running cost |
| salt |
1 RMB/kg |
3.5 Kg |
3.50 RMB |
| Power |
0.7/KWh |
4 KWh |
2.80元 |
| Total |
Cost |
Per kilogram Cl2 |
6.3 RMB |
Purchase cost of liquid chlorine: 5 RMB/ kg Cl2
Purchase cost of commodity sodium hypochlorite: 9.8 RMB / kg Cl2
Operation cost of chlorine dioxide (chemical method): 8.9 RMB / kg Cl2
(high purity method) operation cost: 14 RMB/ kg Cl2
B,Chlorine dosage
Because chlorine is difficult to dissolve in water, while sodium hypochlorite is in ionic state, it can be 100% dissolved in water at low concentration. According to previous project experience and laboratory data, under the condition of obtaining the same residual chlorine value, the chlorine dosage of sodium hypochlorite solution relative to chlorine is 1:1.3. Therefore, when the original disinfection process of the water plant uses 2ppm for chlorine disinfection, the sodium hypochlorite solution only needs: 2 ÷ 1.3=1.54ppm
Therefore, using sodium hypochlorite solution to add chlorine can save more than 20% of the amount of chlorine. According to the tracking experience and laboratory data of the water plant disinfection project, sodium hypochlorite has better continuous disinfection ability than chlorine, which is very beneficial to the water plant with long water supply pipeline network.
Compared with chlorine, sodium hypochlorite will not react like chlorine reacts with water to produce hydrochloric acid, which will corrode water transmission metal pipelines, especially water plants with long water supply pipelines. It is required that the residual chlorine value of drinking water should be more than 0.5ppm or even 0.8ppm.
Take the reconstruction of a water plant as an example (compared with commercial sodium hypochlorite liquid)
800000 tons / day, average chlorination amount 3ppm, daily effective chlorine demand 2400 kg
The daily demand of 10% commodity sodium hypochlorite is 24 tons.
Investment in commercial sodium hypochlorite system: 1 million RMB.
The operating cost of commercial sodium hypochlorite: 8.58 million RMB (the market price is 980 RMB / ton).
On site sodium hypochlorite generation system investment: 5.5 million RMB.
System operation cost of sodium hypochlorite on site: 5.55 million RMB (the market price is 6.30 RMB / Kg).
Annual operating cost savings: 3.08 million RMB
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Large efficient on site sodium hypochlorite generator Images
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