MARKLAND MODEL 602 SLUDGE BLANKET LEVEL METER
TECHNICAL ADVANTAGES

Desludging by sludge blanket level control rather than suboptimal timers, maximizes sludge density and minimizes the daily volume of sludge pumped. Markland's laser-like infrared beam automatically adjusts its intensity to compensate for thick or thin sludges and is unique in that it can measure the sludge level in Dissolved Air Flotation (DAF) tanks and inclined pate clarifiers (Lamellars). A microprocessor with advanced digital self-diagnostics greatly simplifies debugging. A graphics profile program gives a visual picture of settling at the sludge/liquid interface that is useful for coagulant dosage control or process adjustment. The patented Markland system is used in sewage treatment, drinking water purification and many industrial processes and wastewaters.

APPLICATIONS:
  • Primary Clarifier
  • Secondary Clarifier
  • Industrial Clarifiers
  • Wastewater Treatment Plants
  • Drinking Water Filtration Plants
  • Clarifiers
  • Dissolved Air Floatation (DAF) Thickener
  • Decanting Tanks
  • Inclined Plate Separator
  • Batch Processes
  • Decant Control
  • Anywhere a sludge or interface level needs to be measured
Click here to return to the Automatic Sludge Blanket detail page.


MARKLAND MODEL 10 PORTABLE SLUDGE LEVEL DETECTOR
TECHNICAL ADVANTAGES

The SLUDGE GUNŽ, with its rugged and compact construction, is easy to handle and use. Long coretaker type sludge level detectors are unwieldy and not as safe to use on narrow catwalks or from a boat in a lagoon. The loudspeaker on the butt of the SLUDGE GUNŽ gives a variable pitch note depending upon sludge density, which allows the operator to locate the true settled sludge blanket as well as the overlying unsettled layer. The solid-state electronics are powered by standard easily replaced AA size batteries. There are no light bulbs to break or replace.

APPLICATIONS:
  • Primary Clarifier
  • Secondary Clarifier
  • Industrial Clarifiers
  • Farm Lagoons
  • Pig, Swine and Hog Lagoons
  • Settling Lagoons
  • Settling Ponds
  • Septic Tanks
  • Tailing Pond
  • Polishing Lagoons
  • Wastewater Lagoon
  • Wastewater Treatment Plants
  • Drinking Water Filtration Plants
  • Clarifiers
  • Dissolved Air Floatation (DAF) Thickener
  • Anywhere a sludge or interface level needs to be measured
Click here to return to the Manual Level Detection detail page.


MARKLAND MODEL 502 SUSPENDED SOLIDS METER
TECHNICAL ADVANTAGES

Ultrasonic attenuation can measure the density and concentration of sludges and slurries that are too thick for optical Turbidimeters. Sonic Vibrations help keep sensors from fouling and color is not important. Ultrasonic transducers contain no hazardous nuclear material and there is no inherent source decay to cause drift. Simplified microprocessor assisted pushbutton calibration locks calibration parameters into permanent non-volatile memory. Automatic dynamic damping adjusts for non-homogeneous material such as sewage sludge. Advanced digital self-diagnostics greatly simplify debugging. Ultrasonic Suspended Solids Meters bridge the gap where optical systems won't work and where the cost of nuclear systems is not warranted.

PARTIAL LIST OF USES AND TESTED MATERIALS:
  • Iron Ore Slime
  • Metal Hydroxide Sludge
  • Iron Ore
  • White Water
  • Polystipple
  • Flyash
  • Return Activated Sludge
  • Sugar Cane Slurry
  • Talc
  • Aqueous Ammonia
  • Garnet Powder
  • Backwash Filter Sludge
  • Power Plant Sludge
  • Paper Mill Effluent
  • Clay & Silica
  • Sodium Hydroxide Sludge
  • Serium Oxide
  • Ponce Powder
  • Aluminum Oxide
  • Drinking Water Plant Lime Sludge
  • Magnesium Hydroxide
  • Kaolin Clay
  • Resins
  • Calcium Hydroxide
  • Lime Slurry
  • Rubber Latex
  • Metal Finishing Sludge
  • Ceria
  • Fumed Silica
  • Powdered Coal
  • Primary Sludge
Click here to return to the Suspended Solids Meter detail page.


MARKLAND DUCKBILL WASTEWATER SAMPLING SYSTEM
TECHNICAL ADVANTAGES

Using no mechanical moving parts, Markland's Duckbill style pneumatic sampling systems extract wastewater samples with high ejection velocity. Sixty foot sample lifts are possible and pneumatic systems are inherently Explosion Proof. The solid-state control system can be programmed to sample on a time or flow proportional basis or can be in a standby mode awaiting a signal from a Flow Switch or other remote control device. The rubber Duckbill check valve closes around large particles so that even Raw Sewage can be sampled with minimal maintenance. The patented Duckbill style waste-water and water samplers have 35 years of reliable field service around the world.

APPLICATIONS:
  • Wastewater Treatment Plants
  • Drinking Water Plants
  • Industrial Wastewater Treatment Plants
  • Refineries
  • Chemical Plants
  • Electroplaters
  • Circuit Board Manufacturers
  • Anywhere a water sample needs to be taken for analysis
Click here to return to the Automatic Wastewater sampling detail page.