Solid-Liquid Separation, Membrane Recycling and Dust Abatement
Environmental and separation engineering for screw press dewatering, membrane filter presses, RO flux recovery, Langelier scaling, scrubbers and baghouses.
Adheres to solid-liquid conservation and progressive axial screw compression. Accurately determines dry solids load DS, dewatered wet cake yield, separated filtrate volume, pure PAM active polymer consumption, chemical dosing pump flow, and screw press sizing.
Size multi-disc screw press sludge dewatering throughput and PAM flocculant dosingApplies Darcy cake filtration and solid-liquid mass balance. Accurately determines batch cake volume, chamber count, active filtration area, membrane high-pressure squeeze cycle phase breakdown, and daily throughput capacity.
Calculate membrane plate filter press filtration area, chamber count and cycle timeCalculates horizontal vacuum belt filter dry solids throughput, wet cake discharge, specific area filtration loading, liquid ring vacuum pump airflow (CFM / m³/min), and motor power in accordance with solid-liquid filtration mass balance standards.
Size horizontal vacuum belt filter area and liquid ring vacuum pump CFMCalculates cooling tower blowdown dual-membrane ultrafiltration (UF) and reverse osmosis (RO) permeate recovery, brine volume reduction, desalinated product TDS, and annual economic water-saving benefits in accordance with industrial water reuse standards.
Calculate cooling tower blowdown UF and RO recovery and water savingsCalculate industrial reverse osmosis system water recovery percentage, membrane flux in LMH/GFD, temperature correction factor TCF, concentrate brine flow, and salt rejection based on ASTM D4516 and DuPont FilmTec / Hydranautics engineering standards.
Calculate RO membrane water flux, recovery and rejectionCalculate calcium carbonate saturation pHs, Langelier Saturation Index (LSI), and Ryznar Stability Index (RSI) to diagnose cooling water scaling and corrosion tendencies based on ASTM D3739 and NACE standards.
Calculate cooling water Langelier saturation index LSI and RSICompliant with API Spec 421 and European Standard EN 858 oily wastewater standards, enter design wastewater flow (m³/h), operating temperature (°C), oil specific gravity SG, target oil droplet cutoff size (μm), inlet oil concentration (ppm), and separator configuration (CPI corrugated plate interceptor, DAF dissolved air flotation, or API 421 gravity basin). Utilizing Stokes' Law buoyancy dynamics and hydraulic continuity, compute terminal droplet rise velocity (m/h & mm/s), required plan surface area (m²), basin dimensions (m), hydraulic retention time HRT (min), and expected effluent oil concentration (ppm).
Design oil-water coalescing separator and Stokes velocityFollowing the Sherwood-Eckert correlation and Norton packed column standards, calculate flooding gas velocity, operating superficial velocity, column diameter, packed bed depth Z, and circulation pump head.
Size packed gas scrubber tower diameter, packing height and pressure dropCalculate industrial pulse-jet fabric baghouse operating air-to-cloth ratio (filtration velocity), clean fabric pressure drop, maximum allowable cake differential pressure, recommended pulse jet cleaning cycle (s), and draft fan power based on EPA / ACGIH Darcy porous media flow and dust cake loading kinetics.
Calculate baghouse differential pressure drop and pulse cycleCompliant with ACGIH Industrial Ventilation Manual, EPA Clean Air Act guidelines, and ISO 16890 dust filtration standards. Enter design exhaust volumetric flow (m³/h), dust application category (mineral cement/wood grain/chemical battery/metal weld/boiler flue), filter bag diameter (mm), and bag length (m) to calculate recommended engineering Air-to-Cloth ratio (filtration velocity), net cloth area (m²), and total filter bag count. Generates tubesheet layout matrix (rows × bags per row), sizing pulse solenoid valves, compressed air pulse consumption (Nm³/min), recommended air receiver volume (L), online vs offline compartment margin, and operating differential pressure estimates.
Calculate baghouse filter area and air-to-cloth ratioFollow VDI 3677 and ACGIH standards to calculate pulse-jet baghouse supersonic jet volume, venturi secondary air induction ratio (3 to 5:1), peak bag mouth static pressure, and bag bottom cleaning acceleration (g).
Calculate pulse jet venturi injector air induction and compressed air usageSize Stairmand high-efficiency cyclone dust collectors, cut diameter d50, collection efficiency, G-force, and Euler pressure drop per Donaldson and Nederman engineering rules. Inputs flow rate, inlet velocity, gas temperature, dust density, and target particle size.
Calculate cyclone separator dimensions and pressure dropLow-solids (0.5-3%) biological municipal sludges favor continuous multi-disc screw presses with low power and automated PAM flocculation; mineral tailings or chemical cakes requiring under 20-35% moisture dictate membrane filter presses.
Coarse or high-temperature dust streams utilize a cyclone pre-cleaner; fine particulates require a pulse-jet baghouse sized by the Filter Area Calculator to set air-to-cloth ratios and verified via the Venturi Injector tool.
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Already have an account? Open your workspace →Standard chamber presses rely solely on feed pump pressure which drops asymptotically as cakes blind. Diaphragm inflation injects 1.4-2.5 MPa high-pressure fluid behind membranes to mechanically wring out capillary water, reducing cycle times by 40%.
Excessive permeate flux accelerates concentration polarization and colloidal fouling on membrane surfaces. Over-pushing recovery concentrates sparingly soluble salts beyond solubility limits, inducing irreversible mineral scaling.
High filtration velocity forces fine particles deep into fabric pores causing irreversible blind caking. Differential pressure climbs excessively, exhaust fan power spikes, pulse valve cleaning cycles collapse, and bag abrasion accelerates.
