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Your IP: 103.131.71.83
Server Time: 2018-11-20 22:04:14

WAY TO WASTE WATER TREATMENT

Mixing chemicals are converted into% concentrations for ease of calculation. Here is how to calculate the% mass%.

I / MEASUREMENT OF WASTEWATER TREATMENT MATERIALS

Mixing chemicals are converted into% concentrations for ease of calculation

Here is how to calculate% mass%

Cách tính nồng độ % khối lượng

How to calculate the volume percentage

Inside:

C%: Percentage (%)

Mdd: volume of solution (mdd = mct + mdm) (kg unit)

Mdm: solvent volume (kg)

Mct: mass of solute (kg)

Chemical content

Blending chemicals with water so that the solvent here is H2O with a specific weight of 1 kg / lit.

At this point, the chemical content to be mixed is determined according to the following formula:

Formula for chemical content calculation
Formula for chemical content calculation

II / HANDLING WASTE WATER TREATMENT
The chemical estimate required for the operation of the co-operative here is being referenced. The content of chemical doses depends on the quality of the wastewater and should be reviewed and adjusted to achieve the best results.

1. Coustic Soda Flakes NaOH 99%

Alkaline - Scalpels used here are pure type used in industry. In this work the caustic soda application is used to neutralize the pH of the wastewater mainly in the floating pool.

- Sodium caustic sump: Composite tanks are resistant to corrosion.
Suitable caustic soda concentration is 50 ppm.
- Sodium dose required: 50 ppm x 700m3 = 35 kg / day night.

Caution: Use only when pH is changed

 
2. Sulfuric acid (H2SO4) 98%:

In this treatment the use of sulfuric acid is used to neutralize the pH of the dyestuff from the value 9-11 to about 7-8, mainly in the intermediate tank.

- Acid storage tanks: Specialized composite tanks are resistant to corrosion.
- Concentration of acid is suitable to neutralize wastewater about 30 ppm.
- The acid dose to use about 21 kg / day and night.
- The concentration of acid to be mixed for simple phase is usually 10%.

Caution: Use only when pH is changed

3. Chlorine 10%

Chlorine solution is used as an organic solvent for the disinfection of wastewater.

- Chlorine concentration suitable for disinfection wastewater about 10 ppm.
- Chlorine dose needed about 7kg / day and night.
Chlorine should be used directly in the form of 10%.

In addition, you can use the product Chlorine Nippon 70% of Japan with the mixing ratio as the formula above to use.

 
4. Nutrition

Nutrients are used to culture microorganisms in anaerobic & aerobic treatment tanks. Nutrients are only used in the initial start-up phase for microbial culture and are fed into the aerobic and aerobic manual treatment tank.

- Phosphoric acid (H3PO4): 85% phosphoric acid is used primarily to provide phosphorus to microorganisms in biological treatment tanks. Phosphoric acid requirement: 20 kg / day and night.

- Ure 10%: Urea is used primarily to supply nitrogen to microorganisms in biological treatment tanks. Urea dose required: 80 kg / day and night.

5. Polyaluminium chloride PAC

The alum used in this case is PAC (Poly Aluminum Chloride), yellowish powder, high solubility (MSDS).

- Alkaline concentration suitable for agglutination reaction is about 250 ppm.
- The dose of alum needed: 250 mg / l x 700 m3 = 175 kg / day and night.
- Concentration of alum should be about 10%.

 
6. Polymer Anion A1110

The anionic polymer used here is: A1120 opaque white crystals, low solubility

- Polymer concentration suitable for coagulation reaction is about 3 ppm.
- The amount of polymer required: 3 mg / l x 700 m3 = 2.1 kg / day and night.

 
7. Polymer Cation

The cationic polymer used here is C1492 white opaque crystals

- Polymer concentration suitable for coagulation reaction is about 3 ppm.

CHEMICAL CONSUMPTION IN 1 DAY:

STT Chemical Unit Weight (kg)
01 Xút vảy (NaOH) kg/ngày 35
02 Axit Sulphuric (H2SO4) kg/ngày 21
03 Ure kg/ngày 80
04 Axit Phosphoric (H3PO4) kg/ngày 20
05 Chlorine kg/ngày 7
06 Phèn PAC kg/ngày 175
07 Polymer Anion kg/ngày 2,1
08 Polymer Cation kg/ngày 0,3

Note: The content of chemical doses also depends on the quality of the waste water.

Last modified on Friday, 04 August 2017 20:19