Surface treatment wastewater equipment scheme

NegotiableUpdate on 04/27

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Nature of the Manufacturer: Producers

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Overview

Surface treatment wastewater equipment solution: Treating phosphorus and fluoride containing wastewater is a common industrial environmental problem, especially in industries such as electronics, photovoltaics, electroplating, phosphorus chemical industry, and metal surface treatment. This type of wastewater has complex components and is difficult to treat, requiring specialized equipment and technical combinations to meet discharge standards (for example, the domestic "Comprehensive Wastewater Discharge Standard" Level A requires fluoride ≤ 10mg/L and total phosphorus ≤ 0.5mg/L).

Product Details

Surface treatment wastewater equipment schemeCore process and equipment composition

1. Quality pre-processing unit

-Nickel containing wastewater treatment:

-Equipment: Homogenization tank (corrosion-resistant steel mixing)+Fiberglass lined concrete pool（pHcontroller+NaOHDosing system, flocculation tank（PAMDosing), nickel precipitation tank.

-Function: Through chemical precipitation（pH 9~10）Generate nickel hydroxide sludge to ensure nickel meets the standard (≤)0.05 mg/L）.

-oily/Acid alkali wastewater treatment:

-Equipment: oil separation tank (density separation), regulating tank (water quality balance).

-Function: Remove floating oil and suspended solids, and reduce subsequent loads.

-Phosphorus containing wastewater treatment:

-Equipment: Dedicated coagulation tank (adding calcium salt or aluminum salt)+Design a sedimentation tank based on the characteristics of chemical polishing wastewater.

2. Deep processing and reuse unit

-Membrane separation system:

-Ultrafiltration（UF）：PPMaterial: Hollow fiber membrane（0.1 MmPrecision), removing colloids and emulsified oil.

-Reverse osmosis（RO）: Two levelsROSystem (such as8040Type membrane module), desalination rate>95%, achieve70%Reclaimed water (conductivity ≤)30 MS/cm）.

-Biochemical treatment:

-Biological Contact Oxidation Tank: Push Flow Design+Elastic three-dimensional filler, resistant to impact loads,CODHigh removal rate and low sludge production（90Tianpai Mud1Next time).

3. End of pipe guarantee and sludge treatment

-air flotation+Sand filtration: Remove residual suspended solids to ensure compliance with emission standards.

-Sludge dewatering: Plate and frame filter press (moisture content of sludge cake)<60%）Or centrifuge, nickel containing sludge classified as hazardous waste（HW32）Disposal.

Surface treatment wastewater equipment schemeEquipment characteristics and selection points

1. Integrated design

-Underground structure: saves surface space, can be covered with greenery, has good insulation, and is suitable for low-temperature environments.

-Fully automatic control:PLCReal time monitoring of the systempHAdd medication, membrane pressure difference, and reduce manual intervention for fault alarms.

3. Cost and Maintenance

-Investment: Membrane system accounts for a high proportion (approximately)40%）However, reusing profits can shorten the return period.

-Operation and maintenance:UF/RORegular chemical cleaning is required, and the filling material should be cleaned regularly5Annual replacement, medication（NaOHThePACThePAM）Proportion of operating costs60%

Summary: Equipment selection suggestions

-high-nickel/High phosphorus wastewater: "Chemical precipitation+Membrane concentration "combination (such as Kangzheng)DF-ROProcess) to ensure compliance with heavy metal standards.

-highCOD/Oil wastewater: biological contact oxidation+Prioritize air flotation to reduce organic load.

-Emission demand:MVREvaporation realizes the resource utilization of salt crystallization.