Task
The facility treats wastewater generated from the disposal of hazardous waste. This wastewater is contaminated with high concentrations of heavy metals (copper, zinc, nickel, lead, chromium, arsenic) as well as hydrocarbons and AOX.
The goal was to build our ALMA CHEM MCW treatment plant (precipitation and flocculation) as a batch system in order to reliably meet the required limits.
Photo: Batch reactors, each with a capacity of 20 m³, and the steel structure for our CP plant
Design data
Preparation quantity:
Wastewater volume: 60 m³/day
3 reactors, each with a capacity of 20 m³
3 stacking containers, each with a capacity of 22 m³
1 sludge thickener, 20 m³
1 lime silo ( 14 m³ ) with automatic discharge auger and metering system
Dosing stations for coagulants, neutralizing agents, flocculants, and special additives
Control panel with a 19-inch touch panel and ALMA Control software
CEB Backwash Station for Filter Cleaning
ALMA FIL Double Multi-Layer Filter, Ø 1.2 m
Photo: ALMA FIL police filter with CEB backwash
Solution & implementation
Our CP plant is based on the process of precipitation, neutralization, and flocculation, supplemented by a special sulfide treatment to ensure the removal of heavy metals.
The ALMA CHEM MCW (CP system) enables reliable treatment of heavily contaminated wastewater, particularly wastewater containing heavy metals such as copper, zinc, nickel, lead, chromium, and arsenic, as well as hydrocarbons and AOX.
The three reactors at the CP plant are equipped with variable-frequency-driven agitators, radar probes for continuous level measurement, and metering valves. A centrally located control platform provides optimal access to all plant components for operation and maintenance.
An integrated sludge thickener (20 m³) efficiently reduces the sludge volume. Two ALMA FIL multi-layer filters (Ø 1.2 m) operating in parallel are used for post-treatment. These are controlled by pneumatic valves and automatically regenerated by a CEB backwash station.
The CP system is controlled via an in-house developed, fail-safe control panel featuring a 19-inch touch panel and ALMA Control software, which enables fully automated and monitored process control.
Photo: Reactors with an operating platform and exhaust ventilation (ALMA CHEM MCW CP system)
Process additives used
The ALMA AQUA wastewater product series is used, which has been specifically developed for the respective applications and industries. These products can also be custom-formulated as needed to ensure maximum efficiency and operational reliability of the system.
ALMA Additive OS – a specialized sulfide precipitant for heavy metals
ALMA FHM A10 – polymeric flocculant for particle agglomeration
ALMA LIME – Lime-based neutralizer
ALMA FLOC FE40 – Iron-based primary flocculant
Photo: Our lime silo for dosing our lime-based neutralizing agent ALMA LIME
Similar projects
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